Squashed 'externals/fmt/' changes from 9e554999c..9bdd1596c

9bdd1596c Update version
d151562bd Fix punctuation in changelog
346500e70 Fix gcc version check
a434a8f77 Update changelog
9eb47d951 Fix markup
51c58a56b Bump version
3fc33f627 Update changelog
2e32db5b9 Update changelog
c1ce6e01f Update changelog
1c3c80dc1 Update changelog
d1d653d89 Implement the L specifier
73c843748 Follow naming conventions
e588b02b1 Fix posix-mock-test
1a62711d0 Reduce binary size
5b0288158 Merge branch 'master' of github.com:fmtlib/fmt
a133187a8 Update changelog
80ce222ca Fix wide print overload (#1609)
770a94ede Use FMT_THROW macro where applicable
2864e8432 Update readme and add compatibility option
21a295c27 Undo comment change
96c68afe6 Fix -Wsign-conversion warnings
664dd88e3 Enable FMT_STRING() use with types other than string literals
69779b4ed Fix handling of small precision in general format
01a172c96 Add .vs to .gitignore
08ca40ea9 Detect /utf-8 in MSVC
dd97f4920 Improve exception safety in dynamic_format_arg_store
295116948 Move FMT_USE_FLOAT and friends to fmt/format.h
d3e668418 Allow disabling floating point support (#1590)
52d0e1bbe Don't use properties when setting FMT_LIB_NAME
5d32ccfc3 Add back missing OUTPUT_NAME in target properties. (#1598)
3cf619de5 Simplify dynamic_format_arg_store
2559983e7 Color formatting fixed for wide strings (fixes issue #1594) (#1596)
026f99178 Simplify dynamic store
9f70fc3e7 Minor tweaks for dynamic_format_arg_store
6012dc9ab Dynamic arguments storage. Implementation of enhancement from issue #1170. (#1584)
85050aa2e Ability to join elements of std::initializer_list was added
ff486a72a Allow leading zeros in precision (#1579)
678341275 Deprecate fmt::char8_t
6f01b6ebb Fix a typo in CMake config: STRINGS -> STRING
61c5a5160 Fix handling of empty tuples (#1588)
02bfd8a9a Add FMT_HAS_CPP14_ATTRIBUTE / FMT_HAS_CPP17_ATTRIBUTE to test for language-specific attributes.
3c24052cf Workaround 'cannot call member function without object' error on gcc 4.9
f72a905eb Fix handling of volatile enums
941d5e147 Workaround broken fallthrough attribute in the PGI compiler (#1583)
ee2b828b9 Tweak a comment
5bb885665 Workaround for broken [[deprecated]] in PGI compiler (#1581)
1c0c59d4a Fix empty debug postfix
b1adaa988 Remove gcc 4.4 workaround
48e8d0ebe set_doc -> set_verbose
ce0097915 Cleanup CMake config
db4a6cfbf is_static_compiled_format -> is_compiled_format
29a1ea795 Fix clang -Wdisabled-macro-expansion warning from FMT_STRING_IMPL.
8a06ca84c Fix ambiguous overloads of format & format_to
153f753bd Deprecate undocumented _u suffix
eafd07986 Improve width computation
0c6919ec7 Make FMT_DEBUG_POSTFIX a cache variable (#1566)
197a5c372 Apply clang-format
68742e1d8 Fix clang -Wsign-conversion warning in grisu_count_digits. (#1573)
1e8493196 Make compile-time checks in format_to handle references
58e6c84f5 Fix simple -Wsign-conversion cases. (#1571)
75a4525e5 Move FMT_CLANG_VERSION definition to core.h (#1568)
6ccb2e241 Add FMT_NORETURN to assert_fail prototype. (#1569)
bed134a4a Tentative fix for default template param in friend error
b2d3a86ec Make FMT_ASSERT work in constexpr on clang 4.0.1
13d82e32b Don't use internal GTest API
2161a73f2 Fix FMT_FORMAT_AS const specifier position (#1554)
e00997b00 improved use of find (#1560)
0415cf235 add const begin and end overload to buffer (#1553)
3bafd0749 Fix to_string docs
f733882b5 Remove misleading FMT_USE_WINDOWS_H
dc22360c3 Workaround broken UDL templates in GCC < 6.4
1f1b50707 Make formatter override implicit conversion to a C string
24924128e Fix a link error in gcc8 (#1548)
c54cd7180 only modify CMAKE_RUNTIME_OUTPUT_DIRECTORY if it is not already set
43e9b29e5 Only use compiler features if available
b55ea5870 string_view::char_type -> value_type (#1539)
4098970db Update README.rst
314e15001 Fix symbol visibility on Linux when compiling with -fvisibility=hidden (#1535)
f499b393d Apply coding conventions
6c30f4144 Configure fmt.pc library name correctly.
1acb73f97 Fix formatting std::chrono::duration types to wide strings (#1533)
09a13244c Disallow passing non-string-literals to FMT_STRING
419db8baa Fix length computation of constexpr C strings
9fc4161f5 fix interal compiler error when building with mingw
25d6916b3 Fix so can work without locale defined
0b2eb6501 Add locale example
fd1cabe46 Workaround a bogus MSVC warning
a844d7ab8 Add namespaces
47d396809 Add more examples
7800173eb Update fill docs
b4218aa0f Test invalid fill
8a3a8177d Bump version
e5f2f8ce7 Add variable-width fill support (#1109)
75765bfad Avoid unnecessary unsigned overflows (#1515)
9bd9738da Remove static and simplify names
bd5f903f2 Add a locale example
06e437fd9 Move docs to the proper place
1bd4f54fa update format
11cc2903e re-fix url link
b124e3e8e fix url link
ffd5f3469 Correct display format
0f0e5ddf5 Add vcpkg installation instructions
1f110702a Remove redundant braces
4ccbe4b5f Avoid namespace clash for fmt
40638a75b Use C++11 compatible std::is_same operations
c8dd9cc99 Use type_identity to block unnecessary template argument deduction (thanks Tim Song)
4bbe57ceb Work-around for nvcc
55b613005 Use C++11-compatible operations
ae3ea156e Fix for older versions of intel compiler
77165fdf8 Use FMT_NOEXCEPT instead of noexcept directly
65ac626c5 Improve join docs
cd0b3f969 check if _SECURE_SCL is defined not equal to 0
cef1e4354 Optimize grisu_gen_digits
0201c8db2 Restructure float_format
9e3f3e8cf Fix handling of output iterators in format_to_n (#1506)
aa07c5765 Move vprint_mojibake to the internal namespace
a73d89e9c Catch invalid uses of fmt::arg
cb8e7caf7 Convert 'char8_t' character sequences to 'char' sequences
b3fd0005d Suppress a bogus -Wdouble-promotion warning
7b478f9de Simplify example
c85efef31 More showpoint fixes and tests (#1498)
455a7c078 Clarify lifetime of basic_format_args
674c326d7 Update syntax.rst
061a9897f Update syntax.rst
d2d1c9c56 warning C4267: 'argument': conversion from 'size_t' to 'DWORD', possible loss of data
b6e19e595 Update apidoc
f219dcd59 Add fmt::bytes
dea7fde8b Deprecate u8string_view
5390e29d4 Enable mojibake
9f6434dcd Improve UTF-8 handling on Windows
dac9a7f99 Improve UTF-8 handling on Windows
3ca9533f3 Flatten forward
7eec036d9 Improve UTF-8 support
e6b37b4af Handle block boundaries in utf8_to_utf16
8cf4c5206 Apply clang-format
74532c23a Make type a scoped enum
b308159be Make round_direction a scoped enum
162995fed Add os.h to docs
8b41362a0 Add trailing decimal point if # is specified (#1476)
1b1c70108 trailing_zeros -> showpoint
d7e72a09e Simplify FMT_STRING_IMPL
2201890d7 Apply clang-format and update inclusion guards
6100ed4bb Eliminate NVCC NVidia compiler emits unreachable code warnings
1afe201ae Handle block boundaries in utf8_to_utf16
cd2b99032 Chore(readme): use https (#1481)
9acf89fef Mitigate MSVC issue with min/max macros (#1480)
9ea42fb26 Rename posix-test to os-test
da2569827 posix.cc -> os.cc
35959a31d Move OS-specific APIs to a separate header
ec2463c90 Implement utf8_to_utf16 using utf8_decode
0012917f6 Add a UTF-8 decoder
9e450911f Give an error on precision overflow
068d20bc3 Avoid shadowing warnings in FMT_STRING
a99fbe67b Apply a typo fix retroactively
adbed11ed Fix a typo
8ab1c5c6e Squelch MSVC warning exporting subclasses of runtime_error (fix for PR #1433) (#1470)
a770009fc Improve error reporting
598e6042d warning C4468: 'fallthrough': attribute must be followed by a case label or a default label
e09814dc9 Merge branch 'master' of github.com:fmtlib/fmt
b272fb360 Extend FMT_FALLTHROUGH compatibily to gcc and clang pre-C++17 (#1469)
f94b7364b Update version
7abec071b Update changelog
b7eb8c892 Prepare for the next release
ae7c50185 Reintroduce sprintf_format for ABI compatibility
9f2e7edae Fix handling of types convertible to std::string_view
fd52de0c6 Add FMT_CUDA_TEST CMake option to enable cuda-test
f675cb887 Remove redundant cast
73a16b827 Fix handling of int128_t in format-impl-test (#1461)
72879db40 Clean-up sign-conversion warnings in public headers
d3aa0c3a2 Clean-up sign-conversion warnings in test code
31de9a1b8 Revert "Clean-up sign-conversion warnings in test code"
227bfe62d Clean-up sign-conversion warnings in test code
95dfdc6cc Update README.rst
5916ff63c Update README.rst
1ab80aa92 Fix handling of types with custom formatters that are convertible to std::string_view
4f4d87661 Remove '%' from the docs
f443bd3ba Ditch decimal_formatter (#1363)
1219b65f2 Relax fallthrough attribute detection
071794ec6 Update version
d22e4ad85 Remove trailing comma
983806b0c Update changelog
02af5beb8 Bump version and update changelog
123e7f7fc Revert #1433 because of build failures (#1450)
168460f02 Remove TYPES
a64f60c84 Remove unneeded FMT_API.
1a599117d Export assert_fail with FMT_API. This fixes dll build.
b160123e3 Update ChangeLog.rst
598158856 Fix compilation with MinGW
8bbe76af3 Add a missing decimal point in exponent notation with trailing zeros
4ca6821e8 Update version
7111a1eb9 Bump version
ae00bbdc9 Update changelog
e71e07d9f Update changlog
0184df702 Update docs
1cbae6e9b Put vprint declarations in one place
159f89e2b Fixing installation directory of '*.dll' files on Windows
4b120b68a Clean up includes
186b225d9 Update changlog
4cbf4888e Update changelog
e31f2b3d0 Update changelog
62da1db62 Avoid wchar_t instantiations
3bc28fcc6 Squelch MSVC warning exporting subclasses of runtime_error
3c05fa46c Update changelog
ba6e330fd digits -> num_bits
6037b3cae Fix dangling else problem in FMT_ASSERT
fafb03fa6 Fix handling of fallback_uintptr
2f9acd183 Remove dependency on <cassert>
aaf829bfb Fix fallback pointer formatting on big endian, take 2
b994a0ab1 Fix handling of missing fraction in snprintf_float
bb205d940 Fix fallback pointer formatting on big endian
ef7369ce9 Update docs
40e4c227d Update changelog
ea54b21e7 Remove invalid noexcept annotation
9cbf4b087 Fix -Wconversion warnings
1200a34e1 Update changelog
9c7e2a6c6 Add missing newline
34e921f6f Update docs
c3be0f593 Refactor floating-point formatting
c68703c9f float_spec -> float_specs
9a21728b0 Remove gen_digits_params
3de36e934 Enable -Wswitch-enum in CI
4afb39bc2 Update README.rst
7ffa62db1 Fix precision handling in snprintf_float
0d07db123 Fix handling of streamable and convertible to string types
d19ed6716 Fix hexfloat buffer reallocation
99b6e928d Fix handling of types with deleted rvalue conversion to string (#1421)
57cd3f72e Update comment
111fc127f Remove fp::operator-
6003ec3f2 Simplify Grisu implementation
8877a6772 Instantiate snprintf_float
75fff1db6 Minor cleanup
28d7191c2 Don't print trailing zero with fixed, precision=0, and showpoint (#1417)
43271ba8e Handle null terminator at the end of the buffer
63a9f3fcd fix bad oss fuzz link in the oss-fuzz badge
4cf59ce73 Integrate Grisu and sprintf digit generators
7395472dd Refactor floating-point formatting
9108b25da Merge branch 'float'
4d366c68b Merge branch 'master' of github.com:fmtlib/fmt
ded1e7679 Refactor floating point formatting
c7edd8e57 Cleanup FP formatting
75108a56f Don't print % for nan and inf
3e1f70fe0 Merge write_fp into write
125fc5e52 Update comment
6793ffc1d Update README.rst
f4fcc5fd2 Update README.rst
4de41aa65 Move basic_writer::write_fp to where it belongs
404a880bd Make parse_arg_id more readable
092d2dc7b Merge safe-duration-cast.h into chrono.h
093e55421 Remove redundant qualification
d0696b0aa warning C4456: declaration of 'num_digits' hides previous local declaration
66d7746bb Use grisu for exponent notation
e9bff7881 Don't parse % unless FMT_DEPRECATED_PERCENT is set
57b6f2966 Deprecate the fmt macro
d79493e5e Remove Grisu2
78842ce0d test: add default constructor for a const value
5420bcce2 Make % an opt-in to improve compatibility with std::format
56a2e2075 Refactor float spec parsing
ed117baa4 Replace bool with float_format and add exponential
f26446290 Move float_spec_handler to internal namespace and update asserts
7e1cb3237 Fix indentation
f67783d7e Clarify that numeric alignment is deprecated
1c6d85f7b Apply coding conventions to examples
4a1da44f9 Apply coding conventions to examples
080b6899d Tweak the docs
c01ec54fd Document and clean basic_format_parse_context
b0c2ab93f Bump version
9b7fe2a4a Don't use POSIX API on UWP
c58b7d9c2 Use overridden locale in ostream
ceff9b0b2 Tweak the docs
3dc8639f8 [docs] Added conda
dcde089b4 Improve POSIX API detection
2145a7bdc Move has_formatter into the public fmt namespace. (#1407)
52ae134f8 Remove broken CI config
0d6dd0cc6 Correct basic_string_view from string ctor
1f918159e [clang-tidy] Replace deprecated C headers
6868f888b [clang-tidy] Add missing override
87cd545a1 [clang-tidy] Replace {} with = default
12f9437e2 [clang-tidy] Use auto
bb0c8bfea [clang-tidy] Add noexcept where move is used
e6e829890 [clang-tidy] Add parentheses to macro arguments
0f0848e4f [clang-tidy] Use braced init list
a1fb5c733 [clang-tidy] Changes suffixes to uppercase
8a411c2bc [clang-tidy] Turn deleted function to public
0047dc10a Mark apidoc as rst
263cdef8a Merge branch 'master' of github.com:fmtlib/fmt
d4ca54253 Update docs
5bb7b28e1 Document members
1409dfe76 Try fix CI
f1559e1d5 Use grouping() from locale for specifier 'n'
ffd05e65e basic_parse_context -> basic_format_parse_context per standard and document
0889856d6 Fix UTF-8 truncation
d6eede9e0 Remove redundant ctor
213e09644 Workaround X11 madness (#1388)
6bfc9af8c Add double support to compile
3487f1b9c Always inline grisu_gen_digits and disable grisu2 by default
791294d17 Apply get_cached_power optimization by jk-jeon
8e700619b Simplify format_handler
58c6f8c7f Make unsigned-integer-overflow sanitizer happy (#1377)
40414b344 Don't emit trailing zeros in exponential notation (#1376)
b7a157401 Simplify grisu_writer
7aa58c30b Simplify NVCC checks
8e9bffa98 clang-format
ce4d87acd Remove obsolete comment and clang-format
21acc2af4 Fix more Visual Studio 2019 pedantic warnings (#1371)
00669427d Patch compiler error when building using nvcc
d39ebf3ff Optimize counting
6498bc6d3 Simplify grisu_writer
a967dcbe2 Improve handling of signs
8498bc97d Initialize all the things
e2ea94067 Handle assymetric boundaries
2bc5585ff Fix computing lower boundaries for smallest normalized double
bb728a572 packed_arg_bitsize -> packed_arg_bits and remove packed_arg_mask
36d1390e6 Implement round half to even
599e0aef4 Support single precision floats in grisu formatting
91f7619cc Fix Visual Studio 2019 pedantic warning C4334: '<<': result of 32-bit shift implicitly converted to 64 bits (was 64-bit shift intended?)
c4dc6bef2 Apply clang-format
646966e97 Reduce bigint capacity
a5abe5d95 Handle negative exponent and nonnegative power
1cbc5fa6c Handle negative exponent and rename value/pow10 to numerator/denominator
f7a5748fd Partially implement (FPP)^2
0e94b931a Fix a linkage error introduced by #1360 (#1362)
5e58eb97b Implement add_compare
3a15ea3ea Rename write_double to write_fp
b87ac4d84 Distinguish float from double
a927dda9b Use words for packed constants
dd11d4584 Encode types using 5 bits
b55551f90 Implement more comparison operators
96f91428c  Add defaulted copy and move operations to format_error and system_error  (#1347)
b732f28c0 Deduplicate color vformat and vprint
a82c1dc6d use memory_buffer to make color print behave atomic #1348 (#1351)
2730e9018 Fix compile error in printf with gcc9 (#1354)
e4d6d9d7c Implement divmod
a1079e9fd Fix undefined in format-test (#1349)
b66bb6b71 Fix undefined in core-test and printf-test (#1345)
b60114533 Implement more bigint operations
c41cea8b1 Initial implementation of square
0c7650373 Fix handling of types convertible to std::string_view
057101370 Repoint one more Python 2 link to Python 3
d2c9276fc let README point to python 3 instead of 2
0fc7bd157 Fix ambiguity for types with dodgy conversions
b4f1988c4 Provide overload for `fmt::join` that handles `std::tuple`s
4b8f8fac9 Update README.rst
3b2fc033d Making CUDA test work with CMAKE_MSVC_RUNTIME_LIBRARY
ac59d9f3a workaround VS2019 Update 3 compiler bug. (#1328)
8f27ce4d8 add test for multiple compilation types
89b0c71fa fix name clash in header-only mode
f6a783ad2 fix `get`
ccc8f5db0 Disable integral operator<< (#1316)
20fdb88a1 Remove redundant and nonportable test (#1313)
f29901097 Don't use const char* overload of operator<< (#1309)
758446c80 Fix a warning (#1319) and simplify code
f7aedc5fc Fix shared build on Solaris
840a817ed add oss fuzz badge
79c923ba2 fmt.pc.in: Fix for cross compilation
5dc577c06 Update ChangeLog.rst
c6d1a94a9 Fix fallback_format (#1306)
0656045d0 Fix format overload that takes text_style (#1305)
c85ae23c7 Add max_value
b3bf66576 Implement multiplication and part of assignment from pow of 10
0887887e2 Implement left shift
ac71d853b Refactor normalize and clean up
6649b8e0c value -> bigit
56b5c192a Add a bigint stub and reenable grisu
b2f0b6e44 Tweak comment
3d9f3c163 Integrate new format string compilation
19547d514 Update index.rst
972ffd315 Update README.rst
2ed412fa3 Update README.rst
df4dcf2ec Fixed vs 2015 warning about unused variable when grisu is off
f7a4b4ab9 Make numeric alignment optional
611cf0b3c Format octal 0 as 0
58a8f2f53 Add ccache to the list of projects
1882b9687 Reduce the numer of ifdefs with an empty (u)int128_t fallback
6de0454b4 Add support for built-in __int128 when available
16e3c48bb Move definition of FMT_USE_INT128 to core.h
8ce5f680f Rename internal::is_integral and internal::is_arithmetic
2fd8f9ec8 Initial implementation of optimal compile-time formatter generation
fe642d764 Clarify use of the core API in header-only mode (#1296)
a128b5b2c Simplify format string compilation
466128de0 Remove unused code and refactor
22e98a5b6 Make compile work with user-defined types
f18a3f36a Remove string_view_metadata
7cad33563 Refactor format string compilation
e1ab6bc00 Simplify format string compilation
24a88545d Add -Werror to tests
422e7b9d7 Fix compile-time checks for user-defined types (#1292)
d1dd9d532 Document floating-point n specifier (#1291)
9a56a608e Fix warnings (#1288)
c76957565 FixedEnum -> StrongEnum and make it a regression test
200ee6f10 Fix minor clang-tidy warnings
bcd9b9331 Map not int enum to correct underlying_type (#1286)
345ba07f1 Add a CUDA test
9e2490be4 Rename precision parameter
3f75e2b69 Make buffer_range public and update custom formatting docs (#1281)
744302add Workaround broken [[deprecated]] in Intel compiler (#1273)
f5556225a Eliminate shadow variable warning
ad3c7855e Fix typos.
7512a55aa Update version
9bd2f1f9a Temporarily disable Grisu
b9815cf04 Simplify part_counter
fe00cddde Move part counter to the namespace scope
1a7d172dc which_value -> kind
006c2546f Get rid of basic_prepared_format
4ce006fb6 Simplify format string compilation
e2e557e27 Remove preparator
a5f470eb1 Test and fix compiled format_to_n and formatted_size
4070c1d80 PrepareTest -> CompileTest
f8b59251c Remove unused preparator
643aa4c8c Simplify format string compilation
ffe29a92f Get rid of internal::compile
e94d72366 Fix compiled format string version of format_to_n
a9337395a Remove unused variable
562a9f499 Remove parts_container_concept_check
b257c56e5 Fix size types
1488df339 Bump version
b918e3ff8 Fix docopt usage
23b04ca6d Update usage instructions
5d5918a74 Update usage instructions
413d97b33 Fix formatting in changelog
790fd90f4 Update changelog
c0890be77 Update changelog
5a4b24613 Update the default floating-point format docs (#1270)
45dc3486f Update license
5a353fa8c Draft license
c84d227da Update changelog
b2d4ca154 Workaround an issue with std::filesystem::path being an infinitely deep range (#1268)
2aae6b120 Fix doc for importing header only target with CMake
9f09b8eed Fix a warning
2bb8120d9 Fix a warning
c1e97392b Fix warnings
4e99e09bb Fix warnings
1607a0187 Suppress a warning
e8219952c Restrict fmt::compile to literal strings
544b53733 Update changelog
83c13a1fe Update changelog
2546dafec Update changelog
02c04b173 Update changelog
5360ab0b5 Fix iteration over named arguments (#1168)
b615eca96 Update changelog
22a42c0b0 Cleanup compile implementation
c63624ed4 Update changelog
211d31240 Don't terminate on I/O errors in report_error
ef55e74e0 Update changelog
612669d34 Update changelog
ba63ac8c1 Make format_to a non-member
3fe49163b Revert "Make format_to a non-member"
a5bd3ddb2 Make format_to a non-member
3df0ea34e Remove unnecessary overloads
436acf348 Make formatted_size & format_to_n non-members
823128049 Make format a non-member
1dfa2591b Make operator _a constexpr
6f2dd30e3 Simplify udl_formatter return type
431d0f85c Use basic_string_view in non-template UDL
ad71f5a70 Use forwarding references in UDL template
d0f2f3b81 Update usage.rst
eac2796ce Fix locale detection
ee3625746 Internalize format_part
bbf0bada3 Simplify compile
3730b4f03 Cleanup compile implementation
25ff2efc0 Update changelog
9393fe26f prepare -> compile
b48ffc14a Update changelog
3268531bc Workaround a broken C locale on Windows
8bd59ec93 Use fputws for outputting wide strings
1235f0a24 Fix typo in usage.rst
4fb73d114 Update README.rst
f9ceefb0f Fix a warning and is_negative usage
6bcc3fd21 Fix warnings
6a497e1d0 Fix warnings
e9b9b0aef clang-format
ec24342b2 Fix more warnings
230b24944 Fix sign conversion warnings
cadd92d69 Fix #1232.
41076d1de Use `FMT_THROW` in fmt/color.h.
d561cb47a Opt-in macro to enforce use of compile-time format strings
699fe8e71 Remove const qualification in compile-time checks
da2d33f1f Update changelog
af4734fd1 Fix warnings
a3a74672a Update signatures
c11e68305 Update signatures
dd8cc8b0b Disallow passing views as lvalues
f6f0415b8 typedef -> using
c92dc3746 typedef -> using
e3f20d3e1 Remove gcc 4.4 workaround and use proper alias templates (#940)
b43881232 Clean up is_output_iterator
bc15e3700 typedef -> using
cf5ebf205 Cleanup
9c20e72de Cleanup
79209598f core_format_specs -> sprintf_specs
5488d0b53 spec -> specs
e4f84ee1c Refactor format_specs for #1109 and #940
8e0dcd20b Remove old deprecated functions
1d3e3d8c0 Make the 'n' format specifier work with grisu disabled
bc628f8d4 Fix EXPECT_DEBUG_DEATH_IF_SUPPORTED (#1214)
edd13fcc1 Fix small number rounding with fixed precision in grisu
6a031347e Remove unnecessary qualification
bc14c6ee2 Use the decimal point from locale
476f25cd8 Remove ancient gcc workaround
c9d5a08ed Add the 'n' float format specifier
f487ddbdf thousands_sep -> add_thousands_sep
d8fd1699b Make data names follow naming conventions
c286ffc88 int_traits -> uint32_or_64_t
1289782f0 Get rid of add_thousands_sep
2249f5571 Simplify thousands separator handling and cleanup
e76446958 Cleanup and remove deprecated visit
de37de912 Remove deprecated color API
df1a3a141 Remove null_terminating_iterator
78dec87a4 typedef -> using
ded0a3bb3 Internalize undocumented basic_writer
83174f2a1 Refactor ranges
c2e84ee9c Fix FormatTest.StrError on Solaris
2711cb167 Apply clang format and other minor formatting tweaks
ab0ba8a9d Don't emit decimal point if there are no trailing digits (#1210)
bd3fd3bfd clang-format
260c11590 Fix formatting of 0.0 with  (#1210)
9d97201ed add oss-fuzz support
037b84f21 Fix warnings
e37ee419c Export exceptions destructors
e3488fcae Fix Warning
d5d586561 Move strtod_l check to CMake since it's very system-specific
29ef7d31e Fix a warning
af83192d7 Fix warnings
6952732b6 Remove misplaced checks
b97e5d8c2 Remove deprecated fmt/time.h
572b077db Fix warnings
72e519a4b Add formatter<std::string_view>
635e01fe7 Update <format> to the current wording
0e72c9804 Make undocumented output_range internal
f13906f40 back_insert_range<internal::buffer> -> buffer_range
22ddd4b98 Simplify feature checks
bb827341e Add FMT_FUNC where necessary
64c54703d Cleanup
1c3197b8d Fix warnings
fd2292f13 Cleanup checked iterators
4912cff65 Fix handling of mapped types in compile checks (#1200)
463984383 Cleanup
e29708ee5 uintptr -> fallback_uintptr to avoid confusion with uintptr_t
f03a6c532 Cleanup
6c3d584e6 Simplify warning suppression
12f468388 Make iterator_t an alias template
874d6727e Remove workarounds for pre-C++11 compilers
a9940192f Fix warnings
34b541835 Fix warnings
cbbee1b38 Fix handling of hexfloat
92a44db11 Fix warnings
d05d42751 Remove old msvc workaround from arg_formatter_base and fix warning
d32fe0f3f Fix hadling of nullptr
e5422db4b Fix handling of uintptr_t
9d7b64a25 More cleanup
5e293bd97 Remove unnecessary qualification
4a502d980 Add remove_reference_t
d384cdd39 Make is_contiguous_back_insert_iterator internal
32544b610 More cleanup
39f522a13 get_types -> encode_types
d7d2bebf9 Remove redundant typename
9427f15be Fixed issue with formatting to an array of chars
87fbc6f75 get_type -> mapped_type_constant
a48daa60e Remove remove_volatile
afdbbac75 Cleanup
e33fe14f5 Simplify visit
e895da2ec Clean up value
e1a67b528 Remove TODO
a291f07e1 Clean up argument mapping
5d9100fa2 Move char8_t to fmt/core.h
4faadff0a Add preliminary user-defined type support
5d4873359 Clean up value construction
0f0b42861 Cleanup
209db68b2 Get rid of FMT_CONSTEXPR11
cb4c59495 Deprecate convert_to_int
40779749a is_formattable -> has_formatter
b3cf8613b Make formatter specializations override implicit conversions
3fdba0492 Reduce the number of nontrivial formatter instantiations
f5f3ffac5 Merge string make_value overloads
a38b99a18 Fix a regression in named argument handling introduced by prepare
aa31028b2 char_t_impl -> char_t
0787d6974 Simplify SFINAE
bae00aa8d Simplify is_string
388bb389e integral_constant -> bool_constant
7e39c7e6f Put stringy stuff together
3eff8f94d Update docs
469a4bbd3 Use enable_if_t
d2ee5f240 Merge tests
c264e641e Add conditional_t for pre-C++14
4aa0dc578 Fix docs
064ce6b6c Specialize is_char for character types
7893d8539 Clarify why we cannot have nice things
5bafcb437 Add comments about things broken in MSVC
153024255 Fix signature in the docs
eddb84cfc Fix formatting of exotic characters
7e42c65bb Document a more useful to_string_view overload
1e6e87cb7 Update docs
0c6a6e025 Get rid of the FILE* hack and reword apidocs
1653244c6 Fix compilation issue on VS2019 (#1186) (#1191)
d54e64b3c Make buffer_context an alias template
ec6651087 Remove old is_constructible workarounds and replace typedefs with using
4d4b8c238 FMT_CHAR -> char_t
56d2b9110 Install git
89d6c959b Fix cmake link
76ef39fc5 Update vagrant config
af2c73772 Implement parsing of string_views
9df0e2d1f Implement string parsing
5b7bbf885 Revert "FMT_CHAR -> char_t"
4c650057a FMT_CHAR -> char_t
2833c76f2 Move char_t to template param to reduce symbol size
67feef558 Make enable_if_t more std-like and move to fmt namespace
78daa50ff Fix handling of chrono durations with minimal signed rep
87e4ea290 Fix a warning
c56b17029 Add msvc2019 to CI
c929684e3 inlines count_code_points(basic_string_view<char8_t)
f57227a14 FMT_ENABLE_IF -> enable_if_t
634f707f2 Simplify char_t and remove msvc2013 from CI
406e632bd result_of -> invoke_result_t
49f78a427 Demacrify
637bf3c6d Workaround a bug in clang-format
8302c2f33 fmt::internal::declval -> std::declval
d07cc2026 FMT_EXPLICIT -> explicit, FMT_NULL -> nullptr
4a7966c77 Drop gcc 4.4 from CI
9b3c24b99 One weird trick to simplify docs; doxygen hates it
30bce6c14 Fix a few chrono formatting corner cases (#1178)
e5512c5d5 Use static_assert instead of SFINAE in arg(...)
afc571aed Document join and relax its compiler requirements
ad360a62b add gcc 8 c++17 release build
3cf12d7b1 add gcc 8 c++17 build
bb254d146 Disable std-format-test by default
291ba837f Remove wrong compile-time checks from printf (#1173)
01c631af9 Implement unsigned and long long parsing
4fcd4a4bd Reuse parse_format_string in scan
2346779d6 More documentation fixes
afc1a74a6 Minor documentation fixes
ad0eade47 Remove MSVC nonsense
28c187bcd Capitalize titles
91bb3aaf0 fmtlib.net -> fmt.dev
5e7bdf1b9 Clean up vagrant config
570453f27 Add a vagrant config for testing gcc 4.4
ef6282fc4 Fix gcc 4.4 build
e3e470bb6 Remove deprecated format_decimal
67179dbc2 Remove deprecated format_decimal
a5ffa735d Fix gcc 4.4 build
5ee080463 Experiment with scan API
25b72fc4c Move <format> to tests not to confuse users
d179ec5f8 Simplify Grisu
2a9e8b52d Fix advance_to() and begin() using iterator (#1159)
2c77562b1 Fix ambiguous formatter specialization in fmt/ranges.h (#1123)
98b377529 Add support for exotic string_view iterators (#1156)
b488df6cf Fix Grisu3 stopping conditions
f4dfd6e30 Suppress all clang-target-msvc test warning in CMake and other misc fixes (#1151)
a6e8ed15c Disable UDL templates on GCC 9 by default (#1148)
de5da5091 Fix formatting of extreme durations (#1154)
ea2976e6d Move internal::uintptr_t test to format-impl-test (#1152)
77d6036cd Fix unexpected trailing decimal point (#1153)
ccc318e80 Update README.rst
4c8efd694 Update README.rst
d22d11b5f Update README.rst
e9bab6d02 Improve handling of large durations
f52c09f92 Fix format_to_n docs in 5.1.0
118d8bccc Fix compilation error under MSVC 19.21 (#1140)
6828d549e Add FMT_ENABLE_IF_T
3fd134be0  Move test_count_digits to format-impl-test and disable gtest warnings (#1147)
ca7c1f89d Fixed a compile error under MSVC.
ca978b3d2 Fix handling of nan durations
c1d430e61 Improve handling of negative durations
38a85502e Use the same rep type for seconds to prevent overflow
241414028 Eliminate shadowed variable warnings from gcc-7.2
29c10fbf6 Fix DLL visibility of explicit instantiation "declaration" of internal::basic_data<void> in header format.h and the explicit instantiation "definition" in format.cc (#1134)
4a4d72f91 Fix handling of invalid string in chrono formatting
b3cc9c056 Merge remote-tracking branch 'upstream/master' into invalidcolons
2e3352fd0 provoke assertion
4c721e3a2 Fix chrono formatting with invalid argument id (#1132)
8d8ea21c6 Partially implement Grisu3
40a797564 Remove trailing zeros
cb46397df Fix typo
134904c88 Re-enabled constexpr tests
bd516e342 Convert negative precision to zero in printf (#1127)
5efb24dd2 Add specialization test
946498cfb Fix handling of zero precision
6b2086391 fmt::ptr: support unique_ptr and shared_ptr.
d306585a3 Don't inject internal names into std (#1120)
544b92793 Don't detect C compiler
dc94010fa Remove char_traits (#1117)
397e8dd9d clang-format
2b415b7af Restructure printf_arg_formatter to make it customizable
5d755d0a4 Fix handling of volatile char (#1115)
bade46aae Optimize grisu using uint128_t
41fbaeb3b Add <format> test
8bc0adb9b Get rid of obsolete cmake stuff
1763d0e7a Add MongoDB to "Projects using this library"
f569c1ba2 doc fix: time -> chrono
ccd70f59e Workaround bogus unreachable warnings in MSVC
a4969ebe0 Link to fmt(...) docs from index
a6ad29aa3 Update <format>
52eb3fe27 Update <format>
09e2ac5e4 Update <format>
df4ea0c76 Update <format>
718f60acc Fix shadowing warning (#1105) and clang format
aeb5ad3ce Enable [[noreturn]] some.
280839548 basic_buffer -> buffer
6e37c2003 Use compile features cxx_auto_type cxx_variadic_templates instead of cxx_std_11
3de3d76a3 Add compile features for cmake 3.8+
07d5a86a7 Fix warnings
ab1474ef6 Workaround segfault in doxygen and apply clang-format
918ab77ba Try fixing doc build
735b1fadc Only update key on Linux
3c531b735 Fix expired key error when installing with apt
f10a7e2e4 Test exotic pointer formatting
bd8177177 Add support for platforms without uintptr_t
0302927f5 Optimize pointer formatting
bb6842ba3 Simplify to_string
b23c8633f Detect presence of uintptr_t
b588d7f35 Fix a couple of deprecated things.
018d8b57f Remove broken snprintf
1987db663 clang-format
a6d1ad741 handle fwrite results #1098
e979c782d Extend basic_writer with write() method for doubles with optional format_specs argument
9e1531c1e install pkg-config file into libdir
0a66e4cbb Update README.rst
91acfe685 Fix UBSAN warning
b7e6bf967 clang format
da0ea4161 Make compile-time checks work with fallback formatter (#1088)
7ad3015f5 Added missing typename to FMT_STRING. (#1089)
f0b572da0 Update wording test
6d416cf67 Forward declare is_string<FILE*> specializations
b742f622a Create PR template to help agree to the licensing terms (#1083)
02a6f16b5 Update LICENSE.rst
294fd7df9 Remove isinf workaround
17c6900f8 Update docs
0faa968cc Make floating-point formatting locale-independent
bc784d362 Remove isnan workaround
53379dfd0 Don't set CMAKE_BUILD_TYPE if fmt is a subproject (#1081)
76d326a2a Enable grisu for general format
c21c6b8c4 Move enable_if to template params
ec645ca26 Update readme and doxygen config
ae0b0dab9 Remove obsolete TODO
5466a5b41 Document inherited members
9b392a683 Update readme
0fa65cf32 Add example
fdd0149e7 Update readme
e19a95b27 Update readme
ef3927497 Update readme
a7f68dcc0 Update readme
1428b3429 Update readme
97619e27a More fixed precision tests
dd6cc0e6a Merge time-test into chrono-test
a939c7595 Merge fmt/time.h into fmt/chrono.h
17e4b5392 Make chrono formatting work without exceptions (#1062)
a82b3680d More tests and fixed precision fixes
287342dab cmake: default FMT_PKGCONFIG_DIR to a relative path
e28429ee7 Prevent overflow with zero precision
49bbf3c87 Simplify shadowing warning fix
5e5506f83 Update readme
e06523361 Visual Studio 2017: warning C4456: declaration of 'result' hides previous local declaration
ebec00138 Reword licensing part
8daa3c683 Clarify contribution licensing
0d418a8d5 Update and rename CONTRIBUTING.rst to CONTRIBUTING.md
4c66dad8c Refactor digit generation
b1f7cca89 stop -> handler and swap args
f90d33ca1 error_ulp -> error
78c755dc4 Update readme
f23017015 Update readme
ced8aa8c9 Update readme
77d54251f Update benchmark results
1632f72cb Test get_round_direction
8129b9bc4 Test that the library can be compiled witout locales
835087dd0 Add color-test
4523053e6 Fix typos.
8407f4cb2 Round close to zero fixed precision
49d244c06 Don't emit more than precision digits (#1072)
3466d9c84 Don't override fixed formatting depending on exponent (#1072)
93d22dec3 Implement rounding up and clean up FP formatting
d560ddac2 Temporarily disable Grisu for fixed formatting
2d981bb13 Add documentation for '%' format type. (#1071)
d8434baa0 Declare the size of RESET_COLOR.
8f7780a4f Correct comment
2e526a664 Fix handling of output iterator in ranges
79b79f329 Add support for '%' type to output floating point values as a percentage.
287eaab3b Increment output iterator in basic_writer::write for character types (#1056)
a97757736 Use grisu for fixed precision
327d4b6e9 Fixes for some pedantic warnings (#1054)
8af651be3 Implement fixed precision
187bd1b8b Clarify lifetimes of named_arg parameters (#1051)
4e5694fd0 Update arg signature
82c24edcf Workaround a bogus Qt Creator warning
ed138d794 test: assert-test: fix typo in else-branch of EXPECT_DEBUG_DEATH_IF_SUPPORTED
0476a51cb Add Sublime syntax (#1037)
c5aad69f2 Restore deprecated begin()
5b0006476 Make stopping condition configurable in grisu
a44238f2e Improve grisu
83808076e Minor cleanup
9660ea1bf Simplify format string checks
4a9d67636 Gradle 4.10 >> Gradle 5.2
f041f128f Minor cleanup
e4572e5de Update std implementation
442fa1bd4 Decouple format and parse contexts
744e66bb0 Deprecate format_context::parse_context()
d231d68a8 Fix handling of custom context
01f34d0b0 Fix library deprecation warning
9a0a24f90 Test is_streamable with overloaded comma operators
430e6ac9b Protect against overloaded comma operators in decltype
467520e7a Remove unused macro
5a314a528 Eliminate extra copy on floating-point formatting
9989e7f4e Update benchmark results
31510cb43 Fix warnings from Visual Studio
61c9b563c Replace 'std::result_of' by 'std::invoke_result' where possible (#1025)
864b9a220 Correct the comment
153833683 Remove unnecessary checks
22de5a755 Fix warnings from Travis
355eb6d29 Enable grisu for shortest roundtrip (default) formatting
b8d34e0db Fix rounding
e61cac687 Minor grisu improvements
7fbbfed8c Fix warnings caused by usage of deprecated functionality
c3268f4e5 Remove use cases of deprecated functionality
34951f199 Replace comments regarding deprecation with attributes
3f52336e6 Simplify formatter selection
7ca8fc3b1 Fix a bogus warning
5289dd600 Test formatting of special numbers
bf6529f2c Update docs
070061224 Implement 'chrono' formatting specifiers '%Q' and '%q'
06c005b7b Clarify that compile-time checks don't support named arguments
4f6fda558 Add a grisu test stub
9f70b034e Implement precision for floating-point durations.
7cdb1e5e4 Workaround broken is_default_constructible in MSVC
5f1ceebc7 Make formatter<T> override ostream<< for templates (#952)
1b11b000c Update readme
83f052930 Add code from p0645
fdd8e333c Fix compilation with locales disabled (#1011)
dad1eec84 Workaround unimplemented T... on gcc 4.6.x (#1008)
b0cde860a Implement 'snprintf(OutputIt it, size_t n, const S &format, const Args & ... args)' (#917)
e05dfb088 Fix compile errors due to name-hiding and an unused function argument.
dde095fab Revert "Reorder defines"
4a059914a Reorder defines
58b6f8db4 Format the code using clang-format
9a777b9e1 Implemented fmt::prepare()
da55e96f5 Install ninja to fix android build
dc8f8ce4c Fix handling of dynamic width in chrono formatter
f5cc77cea Get rid of 'null_terminating_iterator' in printf.h (#980)
39623a740 Replaced usage of gtest's internal scoped_ptr with unique_ptr.
ae1de3a8d Add support for using text_style in format and vformat directly (#993) * Closes #993
1b8a216dd Improve docs
b3ad759a0 Bump version and correct changelog

git-subtree-dir: externals/fmt
git-subtree-split: 9bdd1596cef1b57b9556f8bef32dc4a32322ef3e
This commit is contained in:
MerryMage 2020-04-23 21:03:34 +01:00
parent 0066ad2d38
commit c9dec5da8c
92 changed files with 18603 additions and 9815 deletions

8
.clang-format Normal file
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@ -0,0 +1,8 @@
# Run manually to reformat a file:
# clang-format -i --style=file <file>
Language: Cpp
BasedOnStyle: Google
IndentPPDirectives: AfterHash
IndentCaseLabels: false
AlwaysBreakTemplateDeclarations: false
DerivePointerAlignment: false

6
.github/pull_request_template.md vendored Normal file
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@ -0,0 +1,6 @@
<!-- Please read the contribution guidelines before submitting a pull request. -->
<!-- By submitting this pull request, you agree that your contributions are licensed under the {fmt} license,
and agree to future changes to the licensing. -->
<!-- If you're a first-time contributor, please acknowledge it by leaving the statement below. -->
I agree that my contributions are licensed under the {fmt} license, and agree to future changes to the licensing.

1
.gitignore vendored
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@ -1,4 +1,5 @@
.vscode/
.vs/
*.iml
.idea/

View file

@ -7,7 +7,6 @@ os: linux
git:
depth: 1
env:
global:
- secure: |-
@ -39,6 +38,26 @@ matrix:
- ubuntu-toolchain-r-test
packages:
- g++-6
# g++ 8 on Linux with C++17
- env: COMPILER=g++-8 BUILD=Debug STANDARD=17
compiler: gcc
addons:
apt:
update: true
sources:
- ubuntu-toolchain-r-test
packages:
- g++-8
- env: COMPILER=g++-8 BUILD=Release STANDARD=17
compiler: gcc
addons:
apt:
update: true
sources:
- ubuntu-toolchain-r-test
packages:
- g++-8
# Apple clang on OS X with C++14
- env: BUILD=Debug STANDARD=14
compiler: clang
@ -46,8 +65,8 @@ matrix:
- env: BUILD=Release STANDARD=14
compiler: clang
os: osx
# clang 6.0 on Linux with C++14
- env: COMPILER=clang++-6.0 BUILD=Debug STANDARD=14
# clang 6.0 on Linux with C++14 (builds the fuzzers as well)
- env: COMPILER=clang++-6.0 BUILD=Debug STANDARD=14 ENABLE_FUZZING=1
compiler: clang
addons:
apt:
@ -73,52 +92,6 @@ matrix:
# g++ 4.8 on Linux with C++11
- env: COMPILER=g++-4.8 BUILD=Debug STANDARD=11
compiler: gcc
# g++ 4.4 on Linux with C++11
- env: COMPILER=g++-4.4 BUILD=Debug STANDARD=11
compiler: gcc
addons:
apt:
update: true
packages:
- g++-4.4
sources:
- ubuntu-toolchain-r-test
# Android
- language: android
addons:
apt:
update: true
sources:
- ubuntu-toolchain-r-test
packages:
- wget
- unzip
- tree
android:
components:
- tools
- platform-tools
- android-21
env:
- ANDROID=true
before_install:
# Download/Install Gradle
- wget https://services.gradle.org/distributions/gradle-4.10.2-bin.zip
- mkdir -p gradle
- unzip -q -d ./gradle gradle-4.10.2-bin.zip
- export GRADLE=gradle/gradle-4.10.2/bin/gradle
- bash $GRADLE --version
install:
# Accept SDK Licenses + Install NDK
- yes | sdkmanager --update > /dev/null 2>&1
- sdkmanager ndk-bundle > /dev/null 2>&1
before_script:
- pushd ./support
script:
- bash ../$GRADLE clean assemble
after_success:
- popd;
- tree ./libs
before_script:
- if [[ "${TRAVIS_OS_NAME}" == "linux" ]]; then export CXX=${COMPILER}; fi

View file

@ -24,24 +24,38 @@ function(join result_var)
set(${result_var} "${result}" PARENT_SCOPE)
endfunction()
# Sets a cache variable with a docstring joined from multiple arguments:
# set(<variable> <value>... CACHE <type> <docstring>...)
# This allows splitting a long docstring for readability.
function(set_verbose)
cmake_parse_arguments(SET_VERBOSE "" "" "CACHE" ${ARGN})
list(GET SET_VERBOSE_CACHE 0 type)
list(REMOVE_AT SET_VERBOSE_CACHE 0)
join(doc ${SET_VERBOSE_CACHE})
set(${SET_VERBOSE_UNPARSED_ARGUMENTS} CACHE ${type} ${doc})
endfunction()
# Set the default CMAKE_BUILD_TYPE to Release.
# This should be done before the project command since the latter can set
# CMAKE_BUILD_TYPE itself (it does so for nmake).
if (NOT CMAKE_BUILD_TYPE)
join(doc "Choose the type of build, options are: None(CMAKE_CXX_FLAGS or "
if (MASTER_PROJECT AND NOT CMAKE_BUILD_TYPE)
set_verbose(CMAKE_BUILD_TYPE Release CACHE STRING
"Choose the type of build, options are: None(CMAKE_CXX_FLAGS or "
"CMAKE_C_FLAGS used) Debug Release RelWithDebInfo MinSizeRel.")
set(CMAKE_BUILD_TYPE Release CACHE STRING ${doc})
endif ()
option(FMT_PEDANTIC "Enable extra warnings and expensive tests." OFF)
option(FMT_WERROR "Halt the compilation with an error on compiler warnings." OFF)
option(FMT_WERROR "Halt the compilation with an error on compiler warnings."
OFF)
# Options that control generation of various targets.
option(FMT_DOC "Generate the doc target." ${MASTER_PROJECT})
option(FMT_INSTALL "Generate the install target." ${MASTER_PROJECT})
option(FMT_TEST "Generate the test target." ${MASTER_PROJECT})
option(FMT_FUZZ "Generate the fuzz target." OFF)
option(FMT_CUDA_TEST "Generate the cuda-test target." OFF)
project(FMT)
project(FMT CXX)
# Get version from core.h
file(READ include/fmt/core.h core_h)
@ -58,7 +72,9 @@ message(STATUS "Version: ${FMT_VERSION}")
message(STATUS "Build type: ${CMAKE_BUILD_TYPE}")
set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin)
if (NOT CMAKE_RUNTIME_OUTPUT_DIRECTORY)
set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin)
endif ()
set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH}
"${CMAKE_CURRENT_SOURCE_DIR}/support/cmake")
@ -66,6 +82,14 @@ set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH}
include(cxx14)
include(CheckCXXCompilerFlag)
list(FIND CMAKE_CXX_COMPILE_FEATURES "cxx_variadic_templates" index)
if (${index} GREATER -1)
# Use cxx_variadic_templates instead of more appropriate cxx_std_11 for
# compatibility with older CMake versions.
set(FMT_REQUIRED_FEATURES cxx_variadic_templates)
endif ()
message(STATUS "Required features: ${FMT_REQUIRED_FEATURES}")
if (CMAKE_CXX_COMPILER_ID MATCHES "GNU")
set(PEDANTIC_COMPILE_FLAGS -pedantic-errors -Wall -Wextra -pedantic
-Wold-style-cast -Wundef
@ -74,7 +98,7 @@ if (CMAKE_CXX_COMPILER_ID MATCHES "GNU")
-Wcast-align -Wnon-virtual-dtor
-Wctor-dtor-privacy -Wdisabled-optimization
-Winvalid-pch -Woverloaded-virtual
-Wconversion
-Wconversion -Wswitch-enum
-Wno-ctor-dtor-privacy -Wno-format-nonliteral -Wno-shadow)
if (NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 4.6)
set(PEDANTIC_COMPILE_FLAGS ${PEDANTIC_COMPILE_FLAGS} -Wnoexcept
@ -93,7 +117,8 @@ if (CMAKE_CXX_COMPILER_ID MATCHES "GNU")
endif ()
if (CMAKE_CXX_COMPILER_ID MATCHES "Clang")
set(PEDANTIC_COMPILE_FLAGS -Wall -Wextra -pedantic -Wconversion -Wno-sign-conversion)
set(PEDANTIC_COMPILE_FLAGS -Wall -Wextra -pedantic -Wconversion
-Wno-sign-conversion -Wdeprecated -Wweak-vtables)
check_cxx_compiler_flag(-Wzero-as-null-pointer-constant HAS_NULLPTR_WARNING)
if (HAS_NULLPTR_WARNING)
set(PEDANTIC_COMPILE_FLAGS ${PEDANTIC_COMPILE_FLAGS}
@ -117,17 +142,24 @@ if (MASTER_PROJECT AND CMAKE_GENERATOR MATCHES "Visual Studio")
set(MSBUILD_SETUP "call \"${WINSDK_SETENV}\"")
endif ()
# Set FrameworkPathOverride to get rid of MSB3644 warnings.
set(netfxpath "C:\\Program Files\\Reference Assemblies\\Microsoft\\Framework\\.NETFramework\\v4.0")
join(netfxpath
"C:\\Program Files\\Reference Assemblies\\Microsoft\\Framework\\"
".NETFramework\\v4.0")
file(WRITE run-msbuild.bat "
${MSBUILD_SETUP}
${CMAKE_MAKE_PROGRAM} -p:FrameworkPathOverride=\"${netfxpath}\" %*")
endif ()
set(strtod_l_headers stdlib.h)
if (APPLE)
set(strtod_l_headers ${strtod_l_headers} xlocale.h)
endif ()
include(CheckSymbolExists)
if (WIN32)
check_symbol_exists(open io.h HAVE_OPEN)
check_symbol_exists(_strtod_l "${strtod_l_headers}" HAVE_STRTOD_L)
else ()
check_symbol_exists(open fcntl.h HAVE_OPEN)
check_symbol_exists(strtod_l "${strtod_l_headers}" HAVE_STRTOD_L)
endif ()
function(add_headers VAR)
@ -139,17 +171,17 @@ function(add_headers VAR)
endfunction()
# Define the fmt library, its includes and the needed defines.
add_headers(FMT_HEADERS chrono.h color.h core.h format.h format-inl.h locale.h
ostream.h printf.h time.h ranges.h)
set(FMT_SOURCES src/format.cc)
if (HAVE_OPEN)
add_headers(FMT_HEADERS posix.h)
set(FMT_SOURCES ${FMT_SOURCES} src/posix.cc)
endif ()
add_headers(FMT_HEADERS chrono.h color.h compile.h core.h format.h format-inl.h
locale.h os.h ostream.h posix.h printf.h ranges.h)
set(FMT_SOURCES src/format.cc src/os.cc)
add_library(fmt ${FMT_SOURCES} ${FMT_HEADERS} README.rst ChangeLog.rst)
add_library(fmt::fmt ALIAS fmt)
if (HAVE_STRTOD_L)
target_compile_definitions(fmt PUBLIC FMT_LOCALE)
endif ()
if (FMT_WERROR)
target_compile_options(fmt PRIVATE ${WERROR_FLAG})
endif ()
@ -157,27 +189,42 @@ if (FMT_PEDANTIC)
target_compile_options(fmt PRIVATE ${PEDANTIC_COMPILE_FLAGS})
endif ()
target_compile_features(fmt INTERFACE ${FMT_REQUIRED_FEATURES})
target_include_directories(fmt PUBLIC
$<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/include>
$<INSTALL_INTERFACE:include>)
set(FMT_DEBUG_POSTFIX d CACHE STRING "Debug library postfix.")
set_target_properties(fmt PROPERTIES
VERSION ${FMT_VERSION} SOVERSION ${CPACK_PACKAGE_VERSION_MAJOR}
DEBUG_POSTFIX d)
DEBUG_POSTFIX "${FMT_DEBUG_POSTFIX}")
# Set FMT_LIB_NAME for pkg-config fmt.pc. We cannot use the OUTPUT_NAME target
# property because it's not set by default.
set(FMT_LIB_NAME fmt)
if (CMAKE_BUILD_TYPE STREQUAL "Debug")
set(FMT_LIB_NAME ${FMT_LIB_NAME}${FMT_DEBUG_POSTFIX})
endif ()
if (BUILD_SHARED_LIBS)
if (UNIX AND NOT APPLE)
if (UNIX AND NOT APPLE AND NOT ${CMAKE_SYSTEM_NAME} MATCHES "SunOS")
# Fix rpmlint warning:
# unused-direct-shlib-dependency /usr/lib/libformat.so.1.1.0 /lib/libm.so.6.
target_link_libraries(fmt -Wl,--as-needed)
endif ()
target_compile_definitions(fmt PRIVATE FMT_EXPORT INTERFACE FMT_SHARED)
endif ()
if (FMT_SAFE_DURATION_CAST)
target_compile_definitions(fmt PUBLIC FMT_SAFE_DURATION_CAST)
endif()
add_library(fmt-header-only INTERFACE)
add_library(fmt::fmt-header-only ALIAS fmt-header-only)
target_compile_definitions(fmt-header-only INTERFACE FMT_HEADER_ONLY=1)
target_compile_features(fmt-header-only INTERFACE ${FMT_REQUIRED_FEATURES})
target_include_directories(fmt-header-only INTERFACE
$<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/include>
@ -187,8 +234,9 @@ target_include_directories(fmt-header-only INTERFACE
if (FMT_INSTALL)
include(GNUInstallDirs)
include(CMakePackageConfigHelpers)
set(FMT_CMAKE_DIR ${CMAKE_INSTALL_LIBDIR}/cmake/fmt CACHE STRING
"Installation directory for cmake files, relative to ${CMAKE_INSTALL_PREFIX}.")
set_verbose(FMT_CMAKE_DIR ${CMAKE_INSTALL_LIBDIR}/cmake/fmt CACHE STRING
"Installation directory for cmake files, relative to "
"${CMAKE_INSTALL_PREFIX}.")
set(version_config ${PROJECT_BINARY_DIR}/fmt-config-version.cmake)
set(project_config ${PROJECT_BINARY_DIR}/fmt-config.cmake)
set(pkgconfig ${PROJECT_BINARY_DIR}/fmt.pc)
@ -199,14 +247,17 @@ if (FMT_INSTALL)
set(INSTALL_TARGETS ${INSTALL_TARGETS} fmt-header-only)
endif ()
set(FMT_LIB_DIR ${CMAKE_INSTALL_LIBDIR} CACHE STRING
"Installation directory for libraries, relative to ${CMAKE_INSTALL_PREFIX}.")
set_verbose(FMT_LIB_DIR ${CMAKE_INSTALL_LIBDIR} CACHE STRING
"Installation directory for libraries, relative to "
"${CMAKE_INSTALL_PREFIX}.")
set(FMT_INC_DIR ${CMAKE_INSTALL_INCLUDEDIR}/fmt CACHE STRING
"Installation directory for include files, relative to ${CMAKE_INSTALL_PREFIX}.")
set_verbose(FMT_INC_DIR ${CMAKE_INSTALL_INCLUDEDIR}/fmt CACHE STRING
"Installation directory for include files, relative to "
"${CMAKE_INSTALL_PREFIX}.")
set(FMT_PKGCONFIG_DIR "${CMAKE_INSTALL_PREFIX}/share/pkgconfig" CACHE PATH
"Installation directory for pkgconfig (.pc) files, relative to ${CMAKE_INSTALL_PREFIX}.")
set_verbose(FMT_PKGCONFIG_DIR ${CMAKE_INSTALL_LIBDIR}/pkgconfig CACHE PATH
"Installation directory for pkgconfig (.pc) files, relative to "
"${CMAKE_INSTALL_PREFIX}.")
# Generate the version, config and target files into the build directory.
write_basic_package_version_file(
@ -235,9 +286,12 @@ if (FMT_INSTALL)
# Install the library and headers.
install(TARGETS ${INSTALL_TARGETS} EXPORT ${targets_export_name}
DESTINATION ${FMT_LIB_DIR})
LIBRARY DESTINATION ${FMT_LIB_DIR}
ARCHIVE DESTINATION ${FMT_LIB_DIR}
RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR})
install(FILES $<TARGET_PDB_FILE:${INSTALL_TARGETS}> DESTINATION ${FMT_LIB_DIR} OPTIONAL)
install(FILES $<TARGET_PDB_FILE:${INSTALL_TARGETS}>
DESTINATION ${FMT_LIB_DIR} OPTIONAL)
install(FILES ${FMT_HEADERS} DESTINATION ${FMT_INC_DIR})
install(FILES "${pkgconfig}" DESTINATION "${FMT_PKGCONFIG_DIR}")
endif ()
@ -251,11 +305,16 @@ if (FMT_TEST)
add_subdirectory(test)
endif ()
# Control fuzzing independent of the unit tests.
if (FMT_FUZZ)
add_subdirectory(test/fuzzing)
endif ()
set(gitignore ${PROJECT_SOURCE_DIR}/.gitignore)
if (MASTER_PROJECT AND EXISTS ${gitignore})
# Get the list of ignored files from .gitignore.
file (STRINGS ${gitignore} lines)
LIST(REMOVE_ITEM lines /doc/html)
list(REMOVE_ITEM lines /doc/html)
foreach (line ${lines})
string(REPLACE "." "[.]" line "${line}")
string(REPLACE "*" ".*" line "${line}")

17
CONTRIBUTING.md Normal file
View file

@ -0,0 +1,17 @@
Contributing to {fmt}
=====================
By submitting a pull request or a patch, you represent that you have the right
to license your contribution to the {fmt} project owners and the community,
agree that your contributions are licensed under the {fmt} license, and agree
to future changes to the licensing.
All C++ code must adhere to [Google C++ Style Guide](
https://google.github.io/styleguide/cppguide.html) with the following
exceptions:
* Exceptions are permitted
* snake_case should be used instead of UpperCamelCase for function and type
names
Thanks for contributing!

View file

@ -1,12 +0,0 @@
Contributing to fmt
===================
All C++ code must adhere to `Google C++ Style Guide
<https://google.github.io/styleguide/cppguide.html>`_ with the following
exceptions:
* Exceptions are permitted
* snake_case should be used instead of UpperCamelCase for function and type
names
Thanks for contributing!

File diff suppressed because it is too large Load diff

View file

@ -1,23 +1,27 @@
Copyright (c) 2012 - 2016, Victor Zverovich
Copyright (c) 2012 - present, Victor Zverovich
All rights reserved.
Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
"Software"), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.
1. Redistributions of source code must retain the above copyright notice, this
list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the documentation
and/or other materials provided with the distribution.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
--- Optional exception to the license ---
As an exception, if, as a result of your compiling your source code, portions
of this Software are embedded into a machine-executable object form of such
source code, you may redistribute such embedded portions in such object form
without including the above copyright and permission notices.

View file

@ -7,89 +7,89 @@
.. image:: https://ci.appveyor.com/api/projects/status/ehjkiefde6gucy1v
:target: https://ci.appveyor.com/project/vitaut/fmt
.. image:: https://badges.gitter.im/Join%20Chat.svg
:alt: Join the chat at https://gitter.im/fmtlib/fmt
:target: https://gitter.im/fmtlib/fmt
.. image:: https://oss-fuzz-build-logs.storage.googleapis.com/badges/libfmt.svg
:alt: fmt is continuously fuzzed att oss-fuzz
:target: https://bugs.chromium.org/p/oss-fuzz/issues/list?colspec=ID%20Type%20Component%20Status%20Proj%20Reported%20Owner%20Summary&q=proj%3Dlibfmt&can=1
.. image:: https://img.shields.io/badge/stackoverflow-fmt-blue.svg
:alt: Ask questions at StackOverflow with the tag fmt
:target: https://stackoverflow.com/questions/tagged/fmt
**{fmt}** is an open-source formatting library for C++.
It can be used as a safe and fast alternative to (s)printf and IOStreams.
It can be used as a safe and fast alternative to (s)printf and iostreams.
`Documentation <http://fmtlib.net/latest/>`__
`Documentation <https://fmt.dev/latest/>`__
This is a development branch that implements the C++ standards proposal `P0645
Text Formatting <http://fmtlib.net/Text%20Formatting.html>`__.
Released versions are available from the `Releases page
<https://github.com/fmtlib/fmt/releases>`__.
Q&A: ask questions on `StackOverflow with the tag fmt <https://stackoverflow.com/questions/tagged/fmt>`_.
Features
--------
* Replacement-based `format API <http://fmtlib.net/dev/api.html>`_ with
* Replacement-based `format API <https://fmt.dev/dev/api.html>`_ with
positional arguments for localization.
* `Format string syntax <http://fmtlib.net/dev/syntax.html>`_ similar to the one
of `str.format <https://docs.python.org/2/library/stdtypes.html#str.format>`_
* `Format string syntax <https://fmt.dev/dev/syntax.html>`_ similar to the one
of `str.format <https://docs.python.org/3/library/stdtypes.html#str.format>`_
in Python.
* Safe `printf implementation
<http://fmtlib.net/latest/api.html#printf-formatting>`_ including
<https://fmt.dev/latest/api.html#printf-formatting>`_ including
the POSIX extension for positional arguments.
* Implementation of `C++20 std::format <https://en.cppreference.com/w/cpp/utility/format>`__.
* Support for user-defined types.
* High speed: performance of the format API is close to that of glibc's `printf
<http://en.cppreference.com/w/cpp/io/c/fprintf>`_ and better than the
performance of IOStreams. See `Speed tests`_ and
`Fast integer to string conversion in C++
* High performance: faster than common standard library implementations of
`printf <https://en.cppreference.com/w/cpp/io/c/fprintf>`_ and
iostreams. See `Speed tests`_ and `Fast integer to string conversion in C++
<http://zverovich.net/2013/09/07/integer-to-string-conversion-in-cplusplus.html>`_.
* Small code size both in terms of source code (the minimum configuration
consists of just three header files, ``core.h``, ``format.h`` and
``format-inl.h``) and compiled code. See `Compile time and code bloat`_.
* Reliability: the library has an extensive set of `unit tests
<https://github.com/fmtlib/fmt/tree/master/test>`_.
<https://github.com/fmtlib/fmt/tree/master/test>`_ and is continuously fuzzed.
* Safety: the library is fully type safe, errors in format strings can be
reported at compile time, automatic memory management prevents buffer overflow
errors.
* Ease of use: small self-contained code base, no external dependencies,
permissive BSD `license
permissive MIT `license
<https://github.com/fmtlib/fmt/blob/master/LICENSE.rst>`_
* `Portability <http://fmtlib.net/latest/index.html#portability>`_ with
* `Portability <https://fmt.dev/latest/index.html#portability>`_ with
consistent output across platforms and support for older compilers.
* Clean warning-free codebase even on high warning levels
(``-Wall -Wextra -pedantic``).
* Support for wide strings.
* Optional header-only configuration enabled with the ``FMT_HEADER_ONLY`` macro.
See the `documentation <http://fmtlib.net/latest/>`_ for more details.
See the `documentation <https://fmt.dev/latest/>`_ for more details.
Examples
--------
This prints ``Hello, world!`` to stdout:
Print ``Hello, world!`` to ``stdout``:
.. code:: c++
fmt::print("Hello, {}!", "world"); // uses Python-like format string syntax
fmt::printf("Hello, %s!", "world"); // uses printf format string syntax
fmt::print("Hello, {}!", "world"); // Python-like format string syntax
fmt::printf("Hello, %s!", "world"); // printf format string syntax
Arguments can be accessed by position and arguments' indices can be repeated:
Format a string and use positional arguments:
.. code:: c++
std::string s = fmt::format("{0}{1}{0}", "abra", "cad");
// s == "abracadabra"
std::string s = fmt::format("I'd rather be {1} than {0}.", "right", "happy");
// s == "I'd rather be happy than right."
Format strings can be checked at compile time:
Check a format string at compile time:
.. code:: c++
// test.cc
#define FMT_STRING_ALIAS 1
#include <fmt/format.h>
std::string s = format(fmt("{2}"), 42);
std::string s = format(FMT_STRING("{2}"), 42);
.. code::
$ c++ -Iinclude -std=c++14 test.cc
...
test.cc:4:17: note: in instantiation of function template specialization 'fmt::v5::format<S, int>' requested here
std::string s = format(fmt("{2}"), 42);
std::string s = format(FMT_STRING("{2}"), 42);
^
include/fmt/core.h:778:19: note: non-constexpr function 'on_error' cannot be used in a constant expression
ErrorHandler::on_error(message);
@ -98,7 +98,7 @@ Format strings can be checked at compile time:
context_.on_error("argument index out of range");
^
{fmt} can be used as a safe portable replacement for ``itoa``
Use {fmt} as a safe portable replacement for ``itoa``
(`godbolt <https://godbolt.org/g/NXmpU4>`_):
.. code:: c++
@ -106,10 +106,10 @@ Format strings can be checked at compile time:
fmt::memory_buffer buf;
format_to(buf, "{}", 42); // replaces itoa(42, buffer, 10)
format_to(buf, "{:x}", 42); // replaces itoa(42, buffer, 16)
// access the string using to_string(buf) or buf.data()
// access the string with to_string(buf) or buf.data()
Formatting of user-defined types is supported via a simple
`extension API <http://fmtlib.net/latest/api.html#formatting-user-defined-types>`_:
Format objects of user-defined types via a simple `extension API
<https://fmt.dev/latest/api.html#formatting-user-defined-types>`_:
.. code:: c++
@ -121,11 +121,10 @@ Formatting of user-defined types is supported via a simple
template <>
struct fmt::formatter<date> {
template <typename ParseContext>
constexpr auto parse(ParseContext &ctx) { return ctx.begin(); }
constexpr auto parse(format_parse_context& ctx) { return ctx.begin(); }
template <typename FormatContext>
auto format(const date &d, FormatContext &ctx) {
auto format(const date& d, FormatContext& ctx) {
return format_to(ctx.out(), "{}-{}-{}", d.year, d.month, d.day);
}
};
@ -133,243 +132,60 @@ Formatting of user-defined types is supported via a simple
std::string s = fmt::format("The date is {}", date{2012, 12, 9});
// s == "The date is 2012-12-9"
You can create your own functions similar to `format
<http://fmtlib.net/latest/api.html#format>`_ and
`print <http://fmtlib.net/latest/api.html#print>`_
Create your own functions similar to `format
<https://fmt.dev/latest/api.html#format>`_ and
`print <https://fmt.dev/latest/api.html#print>`_
which take arbitrary arguments (`godbolt <https://godbolt.org/g/MHjHVf>`_):
.. code:: c++
// Prints formatted error message.
void vreport_error(const char *format, fmt::format_args args) {
void vreport_error(const char* format, fmt::format_args args) {
fmt::print("Error: ");
fmt::vprint(format, args);
}
template <typename... Args>
void report_error(const char *format, const Args & ... args) {
void report_error(const char* format, const Args & ... args) {
vreport_error(format, fmt::make_format_args(args...));
}
report_error("file not found: {}", path);
Note that ``vreport_error`` is not parameterized on argument types which can
improve compile times and reduce code size compared to fully parameterized
improve compile times and reduce code size compared to a fully parameterized
version.
Projects using this library
---------------------------
* `0 A.D. <http://play0ad.com/>`_: A free, open-source, cross-platform real-time
strategy game
* `AMPL/MP <https://github.com/ampl/mp>`_:
An open-source library for mathematical programming
* `AvioBook <https://www.aviobook.aero/en>`_: A comprehensive aircraft
operations suite
* `Celestia <https://celestia.space/>`_: Real-time 3D visualization of space
* `Ceph <https://ceph.com/>`_: A scalable distributed storage system
* `CUAUV <http://cuauv.org/>`_: Cornell University's autonomous underwater
vehicle
* `HarpyWar/pvpgn <https://github.com/pvpgn/pvpgn-server>`_:
Player vs Player Gaming Network with tweaks
* `KBEngine <http://kbengine.org/>`_: An open-source MMOG server engine
* `Keypirinha <http://keypirinha.com/>`_: A semantic launcher for Windows
* `Kodi <https://kodi.tv/>`_ (formerly xbmc): Home theater software
* `Lifeline <https://github.com/peter-clark/lifeline>`_: A 2D game
* `Drake <http://drake.mit.edu/>`_: A planning, control, and analysis toolbox
for nonlinear dynamical systems (MIT)
* `Envoy <https://lyft.github.io/envoy/>`_: C++ L7 proxy and communication bus
(Lyft)
* `FiveM <https://fivem.net/>`_: a modification framework for GTA V
* `MongoDB Smasher <https://github.com/duckie/mongo_smasher>`_: A small tool to
generate randomized datasets
* `OpenSpace <http://openspaceproject.com/>`_: An open-source astrovisualization
framework
* `PenUltima Online (POL) <http://www.polserver.com/>`_:
An MMO server, compatible with most Ultima Online clients
* `quasardb <https://www.quasardb.net/>`_: A distributed, high-performance,
associative database
* `readpe <https://bitbucket.org/sys_dev/readpe>`_: Read Portable Executable
* `redis-cerberus <https://github.com/HunanTV/redis-cerberus>`_: A Redis cluster
proxy
* `rpclib <http://rpclib.net/>`_: A modern C++ msgpack-RPC server and client
library
* `Saddy <https://github.com/mamontov-cpp/saddy-graphics-engine-2d>`_:
Small crossplatform 2D graphic engine
* `Salesforce Analytics Cloud <http://www.salesforce.com/analytics-cloud/overview/>`_:
Business intelligence software
* `Scylla <http://www.scylladb.com/>`_: A Cassandra-compatible NoSQL data store
that can handle 1 million transactions per second on a single server
* `Seastar <http://www.seastar-project.org/>`_: An advanced, open-source C++
framework for high-performance server applications on modern hardware
* `spdlog <https://github.com/gabime/spdlog>`_: Super fast C++ logging library
* `Stellar <https://www.stellar.org/>`_: Financial platform
* `Touch Surgery <https://www.touchsurgery.com/>`_: Surgery simulator
* `TrinityCore <https://github.com/TrinityCore/TrinityCore>`_: Open-source
MMORPG framework
`More... <https://github.com/search?q=cppformat&type=Code>`_
If you are aware of other projects using this library, please let me know
by `email <mailto:victor.zverovich@gmail.com>`_ or by submitting an
`issue <https://github.com/fmtlib/fmt/issues>`_.
Motivation
----------
So why yet another formatting library?
There are plenty of methods for doing this task, from standard ones like
the printf family of function and IOStreams to Boost Format library and
FastFormat. The reason for creating a new library is that every existing
solution that I found either had serious issues or didn't provide
all the features I needed.
Printf
~~~~~~
The good thing about printf is that it is pretty fast and readily available
being a part of the C standard library. The main drawback is that it
doesn't support user-defined types. Printf also has safety issues although
they are mostly solved with `__attribute__ ((format (printf, ...))
<http://gcc.gnu.org/onlinedocs/gcc/Function-Attributes.html>`_ in GCC.
There is a POSIX extension that adds positional arguments required for
`i18n <https://en.wikipedia.org/wiki/Internationalization_and_localization>`_
to printf but it is not a part of C99 and may not be available on some
platforms.
IOStreams
~~~~~~~~~
The main issue with IOStreams is best illustrated with an example:
.. code:: c++
std::cout << std::setprecision(2) << std::fixed << 1.23456 << "\n";
which is a lot of typing compared to printf:
.. code:: c++
printf("%.2f\n", 1.23456);
Matthew Wilson, the author of FastFormat, referred to this situation with
IOStreams as "chevron hell". IOStreams doesn't support positional arguments
by design.
The good part is that IOStreams supports user-defined types and is safe
although error reporting is awkward.
Boost Format library
~~~~~~~~~~~~~~~~~~~~
This is a very powerful library which supports both printf-like format
strings and positional arguments. Its main drawback is performance.
According to various benchmarks it is much slower than other methods
considered here. Boost Format also has excessive build times and severe
code bloat issues (see `Benchmarks`_).
FastFormat
~~~~~~~~~~
This is an interesting library which is fast, safe and has positional
arguments. However it has significant limitations, citing its author:
Three features that have no hope of being accommodated within the
current design are:
* Leading zeros (or any other non-space padding)
* Octal/hexadecimal encoding
* Runtime width/alignment specification
It is also quite big and has a heavy dependency, STLSoft, which might be
too restrictive for using it in some projects.
Loki SafeFormat
~~~~~~~~~~~~~~~
SafeFormat is a formatting library which uses printf-like format strings
and is type safe. It doesn't support user-defined types or positional
arguments. It makes unconventional use of ``operator()`` for passing
format arguments.
Tinyformat
~~~~~~~~~~
This library supports printf-like format strings and is very small and
fast. Unfortunately it doesn't support positional arguments and wrapping
it in C++98 is somewhat difficult. Also its performance and code compactness
are limited by IOStreams.
Boost Spirit.Karma
~~~~~~~~~~~~~~~~~~
This is not really a formatting library but I decided to include it here
for completeness. As IOStreams it suffers from the problem of mixing
verbatim text with arguments. The library is pretty fast, but slower
on integer formatting than ``fmt::Writer`` on Karma's own benchmark,
see `Fast integer to string conversion in C++
<http://zverovich.net/2013/09/07/integer-to-string-conversion-in-cplusplus.html>`_.
Benchmarks
----------
Speed tests
~~~~~~~~~~~
The following speed tests results were generated by building
``tinyformat_test.cpp`` on Ubuntu GNU/Linux 14.04.1 with
``g++-4.8.2 -O3 -DSPEED_TEST -DHAVE_FORMAT``, and taking the best of three
runs. In the test, the format string ``"%0.10f:%04d:%+g:%s:%p:%c:%%\n"`` or
equivalent is filled 2000000 times with output sent to ``/dev/null``; for
further details see the `source
<https://github.com/fmtlib/format-benchmark/blob/master/tinyformat_test.cpp>`_.
================= ============= ===========
Library Method Run Time, s
================= ============= ===========
libc printf 1.35
libc++ std::ostream 3.42
fmt 534bff7 fmt::print 1.56
tinyformat 2.0.1 tfm::printf 3.73
Boost Format 1.54 boost::format 8.44
Folly Format folly::format 2.54
libc printf 1.04
libc++ std::ostream 3.05
{fmt} 6.1.1 fmt::print 0.75
Boost Format 1.67 boost::format 7.24
Folly Format folly::format 2.23
================= ============= ===========
As you can see ``boost::format`` is much slower than the alternative methods; this
is confirmed by `other tests <http://accu.org/index.php/journals/1539>`_.
Tinyformat is quite good coming close to IOStreams. Unfortunately tinyformat
cannot be faster than the IOStreams because it uses them internally.
Performance of fmt is close to that of printf, being `faster than printf on integer
formatting <http://zverovich.net/2013/09/07/integer-to-string-conversion-in-cplusplus.html>`_,
but slower on floating-point formatting which dominates this benchmark.
{fmt} is the fastest of the benchmarked methods, ~35% faster than ``printf``.
The above results were generated by building ``tinyformat_test.cpp`` on macOS
10.14.6 with ``clang++ -O3 -DSPEED_TEST -DHAVE_FORMAT``, and taking the best of
three runs. In the test, the format string ``"%0.10f:%04d:%+g:%s:%p:%c:%%\n"``
or equivalent is filled 2,000,000 times with output sent to ``/dev/null``; for
further details refer to the `source
<https://github.com/fmtlib/format-benchmark/blob/master/tinyformat_test.cpp>`_.
{fmt} is 10x faster than ``std::ostringstream`` and ``sprintf`` on floating-point
formatting (`dtoa-benchmark <https://github.com/fmtlib/dtoa-benchmark>`_)
and as fast as `double-conversion <https://github.com/google/double-conversion>`_:
.. image:: https://user-images.githubusercontent.com/576385/69767160-cdaca400-112f-11ea-9fc5-347c9f83caad.png
:target: https://fmt.dev/unknown_mac64_clang10.0.html
Compile time and code bloat
~~~~~~~~~~~~~~~~~~~~~~~~~~~
@ -390,15 +206,14 @@ Method Compile Time, s Executable size, KiB Stripped size, KiB
============= =============== ==================== ==================
printf 2.6 29 26
printf+string 16.4 29 26
IOStreams 31.1 59 55
fmt 19.0 37 34
tinyformat 44.0 103 97
iostreams 31.1 59 55
{fmt} 19.0 37 34
Boost Format 91.9 226 203
Folly Format 115.7 101 88
============= =============== ==================== ==================
As you can see, fmt has 60% less overhead in terms of resulting binary code
size compared to IOStreams and comes pretty close to ``printf``. Boost Format
As you can see, {fmt} has 60% less overhead in terms of resulting binary code
size compared to iostreams and comes pretty close to ``printf``. Boost Format
and Folly Format have the largest overheads.
``printf+string`` is the same as ``printf`` but with extra ``<string>``
@ -411,17 +226,15 @@ Method Compile Time, s Executable size, KiB Stripped size, KiB
============= =============== ==================== ==================
printf 2.2 33 30
printf+string 16.0 33 30
IOStreams 28.3 56 52
fmt 18.2 59 50
tinyformat 32.6 88 82
iostreams 28.3 56 52
{fmt} 18.2 59 50
Boost Format 54.1 365 303
Folly Format 79.9 445 430
============= =============== ==================== ==================
``libc``, ``lib(std)c++`` and ``libfmt`` are all linked as shared
libraries to compare formatting function overhead only. Boost Format
and tinyformat are header-only libraries so they don't provide any
linkage options.
``libc``, ``lib(std)c++`` and ``libfmt`` are all linked as shared libraries to
compare formatting function overhead only. Boost Format is a
header-only library so it doesn't provide any linkage options.
Running the tests
~~~~~~~~~~~~~~~~~
@ -429,7 +242,7 @@ Running the tests
Please refer to `Building the library`__ for the instructions on how to build
the library and run the unit tests.
__ http://fmtlib.net/latest/usage.html#building-the-library
__ https://fmt.dev/latest/usage.html#building-the-library
Benchmarks reside in a separate repository,
`format-benchmarks <https://github.com/fmtlib/format-benchmark>`_,
@ -448,6 +261,175 @@ or the bloat test::
$ make bloat-test
Projects using this library
---------------------------
* `0 A.D. <https://play0ad.com/>`_: A free, open-source, cross-platform real-time
strategy game
* `AMPL/MP <https://github.com/ampl/mp>`_:
An open-source library for mathematical programming
* `AvioBook <https://www.aviobook.aero/en>`_: A comprehensive aircraft
operations suite
* `Celestia <https://celestia.space/>`_: Real-time 3D visualization of space
* `Ceph <https://ceph.com/>`_: A scalable distributed storage system
* `ccache <https://ccache.dev/>`_: A compiler cache
* `CUAUV <http://cuauv.org/>`_: Cornell University's autonomous underwater
vehicle
* `HarpyWar/pvpgn <https://github.com/pvpgn/pvpgn-server>`_:
Player vs Player Gaming Network with tweaks
* `KBEngine <https://kbengine.org/>`_: An open-source MMOG server engine
* `Keypirinha <https://keypirinha.com/>`_: A semantic launcher for Windows
* `Kodi <https://kodi.tv/>`_ (formerly xbmc): Home theater software
* `Lifeline <https://github.com/peter-clark/lifeline>`_: A 2D game
* `Drake <https://drake.mit.edu/>`_: A planning, control, and analysis toolbox
for nonlinear dynamical systems (MIT)
* `Envoy <https://lyft.github.io/envoy/>`_: C++ L7 proxy and communication bus
(Lyft)
* `FiveM <https://fivem.net/>`_: a modification framework for GTA V
* `MongoDB <https://mongodb.com/>`_: Distributed document database
* `MongoDB Smasher <https://github.com/duckie/mongo_smasher>`_: A small tool to
generate randomized datasets
* `OpenSpace <https://openspaceproject.com/>`_: An open-source astrovisualization
framework
* `PenUltima Online (POL) <https://www.polserver.com/>`_:
An MMO server, compatible with most Ultima Online clients
* `quasardb <https://www.quasardb.net/>`_: A distributed, high-performance,
associative database
* `readpe <https://bitbucket.org/sys_dev/readpe>`_: Read Portable Executable
* `redis-cerberus <https://github.com/HunanTV/redis-cerberus>`_: A Redis cluster
proxy
* `rpclib <http://rpclib.net/>`_: A modern C++ msgpack-RPC server and client
library
* `Saddy <https://github.com/mamontov-cpp/saddy-graphics-engine-2d>`_:
Small crossplatform 2D graphic engine
* `Salesforce Analytics Cloud <https://www.salesforce.com/analytics-cloud/overview/>`_:
Business intelligence software
* `Scylla <https://www.scylladb.com/>`_: A Cassandra-compatible NoSQL data store
that can handle 1 million transactions per second on a single server
* `Seastar <http://www.seastar-project.org/>`_: An advanced, open-source C++
framework for high-performance server applications on modern hardware
* `spdlog <https://github.com/gabime/spdlog>`_: Super fast C++ logging library
* `Stellar <https://www.stellar.org/>`_: Financial platform
* `Touch Surgery <https://www.touchsurgery.com/>`_: Surgery simulator
* `TrinityCore <https://github.com/TrinityCore/TrinityCore>`_: Open-source
MMORPG framework
`More... <https://github.com/search?q=fmtlib&type=Code>`_
If you are aware of other projects using this library, please let me know
by `email <mailto:victor.zverovich@gmail.com>`_ or by submitting an
`issue <https://github.com/fmtlib/fmt/issues>`_.
Motivation
----------
So why yet another formatting library?
There are plenty of methods for doing this task, from standard ones like
the printf family of function and iostreams to Boost Format and FastFormat
libraries. The reason for creating a new library is that every existing
solution that I found either had serious issues or didn't provide
all the features I needed.
printf
~~~~~~
The good thing about ``printf`` is that it is pretty fast and readily available
being a part of the C standard library. The main drawback is that it
doesn't support user-defined types. ``printf`` also has safety issues although
they are somewhat mitigated with `__attribute__ ((format (printf, ...))
<https://gcc.gnu.org/onlinedocs/gcc/Function-Attributes.html>`_ in GCC.
There is a POSIX extension that adds positional arguments required for
`i18n <https://en.wikipedia.org/wiki/Internationalization_and_localization>`_
to ``printf`` but it is not a part of C99 and may not be available on some
platforms.
iostreams
~~~~~~~~~
The main issue with iostreams is best illustrated with an example:
.. code:: c++
std::cout << std::setprecision(2) << std::fixed << 1.23456 << "\n";
which is a lot of typing compared to printf:
.. code:: c++
printf("%.2f\n", 1.23456);
Matthew Wilson, the author of FastFormat, called this "chevron hell". iostreams
don't support positional arguments by design.
The good part is that iostreams support user-defined types and are safe although
error handling is awkward.
Boost Format
~~~~~~~~~~~~
This is a very powerful library which supports both ``printf``-like format
strings and positional arguments. Its main drawback is performance. According to
various benchmarks it is much slower than other methods considered here. Boost
Format also has excessive build times and severe code bloat issues (see
`Benchmarks`_).
FastFormat
~~~~~~~~~~
This is an interesting library which is fast, safe and has positional
arguments. However it has significant limitations, citing its author:
Three features that have no hope of being accommodated within the
current design are:
* Leading zeros (or any other non-space padding)
* Octal/hexadecimal encoding
* Runtime width/alignment specification
It is also quite big and has a heavy dependency, STLSoft, which might be
too restrictive for using it in some projects.
Boost Spirit.Karma
~~~~~~~~~~~~~~~~~~
This is not really a formatting library but I decided to include it here for
completeness. As iostreams, it suffers from the problem of mixing verbatim text
with arguments. The library is pretty fast, but slower on integer formatting
than ``fmt::format_int`` on Karma's own benchmark,
see `Fast integer to string conversion in C++
<http://zverovich.net/2013/09/07/integer-to-string-conversion-in-cplusplus.html>`_.
FAQ
---
@ -474,11 +456,11 @@ A: use ``std::tuple``:
License
-------
fmt is distributed under the BSD `license
{fmt} is distributed under the MIT `license
<https://github.com/fmtlib/fmt/blob/master/LICENSE.rst>`_.
The `Format String Syntax
<http://fmtlib.net/latest/syntax.html>`_
<https://fmt.dev/latest/syntax.html>`_
section in the documentation is based on the one from Python `string module
documentation <https://docs.python.org/3/library/string.html#module-string>`_
adapted for the current library. For this reason the documentation is
@ -490,7 +472,7 @@ It only applies if you distribute the documentation of fmt.
Acknowledgments
---------------
The fmt library is maintained by Victor Zverovich (`vitaut
The {fmt} library is maintained by Victor Zverovich (`vitaut
<https://github.com/vitaut>`_) and Jonathan Müller (`foonathan
<https://github.com/foonathan>`_) with contributions from many other people.
See `Contributors <https://github.com/fmtlib/fmt/graphs/contributors>`_ and
@ -504,10 +486,10 @@ written by Chris Foster. Boost Format library is acknowledged transitively
since it had some influence on tinyformat.
Some ideas used in the implementation are borrowed from `Loki
<http://loki-lib.sourceforge.net/>`_ SafeFormat and `Diagnostic API
<http://clang.llvm.org/doxygen/classclang_1_1Diagnostic.html>`_ in
`Clang <http://clang.llvm.org/>`_.
<https://clang.llvm.org/doxygen/classclang_1_1Diagnostic.html>`_ in
`Clang <https://clang.llvm.org/>`_.
Format string syntax and the documentation are based on Python's `str.format
<http://docs.python.org/2/library/stdtypes.html#str.format>`_.
<https://docs.python.org/3/library/stdtypes.html#str.format>`_.
Thanks `Doug Turnbull <https://github.com/softwaredoug>`_ for his valuable
comments and contribution to the design of the type-safe API and
`Gregory Czajkowski <https://github.com/gcflymoto>`_ for implementing binary

View file

@ -6,7 +6,7 @@ endif ()
add_custom_target(doc
COMMAND ${CMAKE_CURRENT_SOURCE_DIR}/build.py ${FMT_VERSION}
SOURCES api.rst syntax.rst build.py conf.py _templates/layout.html)
SOURCES api.rst syntax.rst usage.rst build.py conf.py _templates/layout.html)
install(DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/html/
DESTINATION share/doc/fmt OPTIONAL)

View file

@ -58,7 +58,7 @@
<span class="caret"></span></a>
<ul class="dropdown-menu" role="menu">
{% for v in versions.split(',') %}
<li><a href="http://fmtlib.net/{{v}}">{{v}}</a></li>
<li><a href="https://fmt.dev/{{v}}">{{v}}</a></li>
{% endfor %}
</ul>
</li>
@ -84,7 +84,7 @@
<div class="jumbotron">
<div class="tb-container">
<h1>{fmt}</h1>
<p class="lead">Small, safe and fast formatting library</p>
<p class="lead">A modern formatting library</p>
<div class="btn-group" role="group">
{% set name = 'fmt' if version.split('.')[0]|int >= 3 else 'cppformat' %}
<a class="btn btn-success"

View file

@ -10,12 +10,14 @@ The {fmt} library API consists of the following parts:
facilities and a lightweight subset of formatting functions
* :ref:`fmt/format.h <format-api>`: the full format API providing compile-time
format string checks, output iterator and user-defined type support
* :ref:`fmt/time.h <time-api>`: date and time formatting
* :ref:`fmt/ranges.h <ranges-api>`: additional formatting support for ranges
and tuples
* :ref:`fmt/chrono.h <chrono-api>`: date and time formatting
* :ref:`fmt/ostream.h <ostream-api>`: ``std::ostream`` support
* :ref:`fmt/printf.h <printf-api>`: ``printf`` formatting
All functions and types provided by the library reside in namespace ``fmt`` and
macros have prefix ``FMT_`` or ``fmt``.
macros have prefix ``FMT_``.
.. _core-api:
@ -23,7 +25,8 @@ Core API
========
``fmt/core.h`` defines the core API which provides argument handling facilities
and a lightweight subset of formatting functions.
and a lightweight subset of formatting functions. In the header-only mode
include ``fmt/format.h`` instead of ``fmt/core.h``.
The following functions use :ref:`format string syntax <syntax>`
similar to that of Python's `str.format
@ -39,24 +42,25 @@ participate in an overload resolution if the latter is not a string.
.. _format:
.. doxygenfunction:: format(const S&, const Args&...)
.. doxygenfunction:: vformat(const S&, basic_format_args<typename buffer_context<Char>::type>)
.. doxygenfunction:: format(const S&, Args&&...)
.. doxygenfunction:: vformat(const S&, basic_format_args<buffer_context<Char>>)
.. _print:
.. doxygenfunction:: print(const S&, const Args&...)
.. doxygenfunction:: print(const S&, Args&&...)
.. doxygenfunction:: vprint(string_view, format_args)
.. doxygenfunction:: print(std::FILE *, const S&, const Args&...)
.. doxygenfunction:: print(std::FILE *, const S&, Args&&...)
.. doxygenfunction:: vprint(std::FILE *, string_view, format_args)
.. doxygenfunction:: vprint(std::FILE *, wstring_view, wformat_args)
Named arguments
Named Arguments
---------------
.. doxygenfunction:: fmt::arg(string_view, const T&)
.. doxygenfunction:: fmt::arg(const S&, const T&)
Argument lists
Named arguments are not supported in compile-time checks at the moment.
Argument Lists
--------------
.. doxygenfunction:: fmt::make_format_args(const Args&...)
@ -81,6 +85,19 @@ Compatibility
.. doxygentypedef:: fmt::string_view
.. doxygentypedef:: fmt::wstring_view
Locale
------
All formatting is locale-independent by default. Use the ``'n'`` format
specifier to insert the appropriate number separator characters from the
locale::
#include <fmt/core.h>
#include <locale>
std::locale::global(std::locale("en_US.UTF-8"));
auto s = fmt::format("{:n}", 1000000); // s == "1,000,000"
.. _format-api:
Format API
@ -89,12 +106,16 @@ Format API
``fmt/format.h`` defines the full format API providing compile-time format
string checks, output iterator and user-defined type support.
Compile-time format string checks
Compile-time Format String Checks
---------------------------------
.. doxygendefine:: fmt
Compile-time checks are supported for built-in and string types as well as
user-defined types with ``constexpr`` ``parse`` functions in their ``formatter``
specializations.
Formatting user-defined types
.. doxygendefine:: FMT_STRING
Formatting User-defined Types
-----------------------------
To make a user-defined type formattable, specialize the ``formatter<T>`` struct
@ -104,32 +125,56 @@ template and implement ``parse`` and ``format`` methods::
struct point { double x, y; };
namespace fmt {
template <>
struct formatter<point> {
template <typename ParseContext>
constexpr auto parse(ParseContext &ctx) { return ctx.begin(); }
struct fmt::formatter<point> {
// Presentation format: 'f' - fixed, 'e' - exponential.
char presentation = 'f';
// Parses format specifications of the form ['f' | 'e'].
constexpr auto parse(format_parse_context& ctx) {
// [ctx.begin(), ctx.end()) is a character range that contains a part of
// the format string starting from the format specifications to be parsed,
// e.g. in
//
// fmt::format("{:f} - point of interest", point{1, 2});
//
// the range will contain "f} - point of interest". The formatter should
// parse specifiers until '}' or the end of the range. In this example
// the formatter should parse the 'f' specifier and return an iterator
// pointing to '}'.
// Parse the presentation format and store it in the formatter:
auto it = ctx.begin(), end = ctx.end();
if (it != end && (*it == 'f' || *it == 'e')) presentation = *it++;
// Check if reached the end of the range:
if (it != end && *it != '}')
throw format_error("invalid format");
// Return an iterator past the end of the parsed range:
return it;
}
// Formats the point p using the parsed format specification (presentation)
// stored in this formatter.
template <typename FormatContext>
auto format(const point &p, FormatContext &ctx) {
return format_to(ctx.begin(), "({:.1f}, {:.1f})", p.x, p.y);
auto format(const point& p, FormatContext& ctx) {
// ctx.out() is an output iterator to write to.
return format_to(
ctx.out(),
presentation == 'f' ? "({:.1f}, {:.1f})" : "({:.1e}, {:.1e})",
p.x, p.y);
}
};
}
Then you can pass objects of type ``point`` to any formatting function::
point p = {1, 2};
std::string s = fmt::format("{}", p);
std::string s = fmt::format("{:f}", p);
// s == "(1.0, 2.0)"
In the example above the ``formatter<point>::parse`` function ignores the
contents of the format string referred to by ``ctx.begin()`` so the object will
always be formatted in the same way. See ``formatter<tm>::parse`` in
:file:`fmt/time.h` for an advanced example of how to parse the format string and
customize the formatted output.
You can also reuse existing formatters, for example::
You can also reuse existing formatters via inheritance or composition, for
example::
enum class color {red, green, blue};
@ -137,7 +182,7 @@ You can also reuse existing formatters, for example::
struct fmt::formatter<color>: formatter<string_view> {
// parse is inherited from formatter<string_view>.
template <typename FormatContext>
auto format(color c, FormatContext &ctx) {
auto format(color c, FormatContext& ctx) {
string_view name = "unknown";
switch (c) {
case color::red: name = "red"; break;
@ -177,15 +222,14 @@ You can also write a formatter for a hierarchy of classes::
fmt::print("{}", a); // prints "B"
}
This section shows how to define a custom format function for a user-defined
type. The next section describes how to get ``fmt`` to use a conventional stream
output ``operator<<`` when one is defined for a user-defined type.
.. doxygenclass:: fmt::basic_format_parse_context
:members:
Output iterator support
Output Iterator Support
-----------------------
.. doxygenfunction:: fmt::format_to(OutputIt, const S&, const Args&...)
.. doxygenfunction:: fmt::format_to_n(OutputIt, std::size_t, string_view, const Args&...)
.. doxygenfunction:: fmt::format_to(OutputIt, const S&, Args&&...)
.. doxygenfunction:: fmt::format_to_n(OutputIt, std::size_t, string_view, Args&&...)
.. doxygenstruct:: fmt::format_to_n_result
:members:
@ -201,6 +245,8 @@ The following user-defined literals are defined in ``fmt/format.h``.
Utilities
---------
.. doxygenstruct:: fmt::is_char
.. doxygentypedef:: fmt::char_t
.. doxygenfunction:: fmt::formatted_size(string_view, const Args&...)
@ -209,13 +255,17 @@ Utilities
.. doxygenfunction:: fmt::to_wstring(const T&)
.. doxygenfunction:: fmt::to_string_view(basic_string_view<Char>)
.. doxygenfunction:: fmt::to_string_view(const Char *)
.. doxygenfunction:: fmt::join(const Range&, string_view)
.. doxygenfunction:: fmt::join(It, It, string_view)
.. doxygenclass:: fmt::basic_memory_buffer
:protected-members:
:members:
System errors
System Errors
-------------
fmt does not use ``errno`` to communicate errors to the user, but it may call
@ -232,7 +282,7 @@ the value of ``errno`` being preserved by library functions.
.. _formatstrings:
Custom allocators
Custom Allocators
-----------------
The {fmt} library supports custom dynamic memory allocators.
@ -258,7 +308,7 @@ allocator::
template <typename ...Args>
inline custom_string format(custom_allocator alloc,
fmt::string_view format_str,
const Args & ... args) {
const Args& ... args) {
return vformat(alloc, format_str, fmt::make_format_args(args...));
}
@ -267,27 +317,27 @@ arguments, the container that stores pointers to them will be allocated using
the default allocator. Also floating-point formatting falls back on ``sprintf``
which may do allocations.
Custom formatting of built-in types
Custom Formatting of Built-in Types
-----------------------------------
It is possible to change the way arguments are formatted by providing a
custom argument formatter class::
using arg_formatter =
fmt::arg_formatter<fmt::back_insert_range<fmt::internal::buffer>>;
using arg_formatter = fmt::arg_formatter<fmt::buffer_range<char>>;
// A custom argument formatter that formats negative integers as unsigned
// with the ``x`` format specifier.
class custom_arg_formatter : public arg_formatter {
public:
custom_arg_formatter(fmt::format_context &ctx,
fmt::format_specs *spec = nullptr)
: arg_formatter(ctx, spec) {}
custom_arg_formatter(fmt::format_context& ctx,
fmt::format_parse_context* parse_ctx = nullptr,
fmt::format_specs* spec = nullptr)
: arg_formatter(ctx, parse_ctx, spec) {}
using arg_formatter::operator();
auto operator()(int value) {
if (spec().type() == 'x')
if (specs() && specs()->type == 'x')
return (*this)(static_cast<unsigned>(value)); // convert to unsigned and format
return arg_formatter::operator()(value);
}
@ -302,7 +352,7 @@ custom argument formatter class::
template <typename ...Args>
inline std::string custom_format(
fmt::string_view format_str, const Args &... args) {
fmt::string_view format_str, const Args&... args) {
return custom_vformat(format_str, fmt::make_format_args(args...));
}
@ -311,16 +361,41 @@ custom argument formatter class::
.. doxygenclass:: fmt::arg_formatter
:members:
.. _time-api:
.. _ranges-api:
Date and time formatting
Ranges and Tuple Formatting
===========================
The library also supports convenient formatting of ranges and tuples::
#include <fmt/ranges.h>
std::tuple<char, int, float> t{'a', 1, 2.0f};
// Prints "('a', 1, 2.0)"
fmt::print("{}", t);
NOTE: currently, the overload of ``fmt::join`` for iterables exists in the main
``format.h`` header, but expect this to change in the future.
Using ``fmt::join``, you can separate tuple elements with a custom separator::
#include <fmt/ranges.h>
std::tuple<int, char> t = {1, 'a'};
// Prints "1, a"
fmt::print("{}", fmt::join(t, ", "));
.. _chrono-api:
Date and Time Formatting
========================
The library supports `strftime
<http://en.cppreference.com/w/cpp/chrono/c/strftime>`_-like date and time
formatting::
#include <fmt/time.h>
#include <fmt/chrono.h>
std::time_t t = std::time(nullptr);
// Prints "The date is 2016-04-29." (with the current date)
@ -331,7 +406,7 @@ The format string syntax is described in the documentation of
.. _ostream-api:
``std::ostream`` support
``std::ostream`` Support
========================
``fmt/ostream.h`` provides ``std::ostream`` support including formatting of
@ -344,7 +419,7 @@ user-defined types that have overloaded ``operator<<``::
public:
date(int year, int month, int day): year_(year), month_(month), day_(day) {}
friend std::ostream &operator<<(std::ostream &os, const date &d) {
friend std::ostream& operator<<(std::ostream& os, const date& d) {
return os << d.year_ << '-' << d.month_ << '-' << d.day_;
}
};
@ -352,11 +427,11 @@ user-defined types that have overloaded ``operator<<``::
std::string s = fmt::format("The date is {}", date(2012, 12, 9));
// s == "The date is 2012-12-9"
.. doxygenfunction:: print(std::basic_ostream<fmt::char_t<S>>&, const S&, const Args&...)
.. doxygenfunction:: print(std::basic_ostream<Char>&, const S&, Args&&...)
.. _printf-api:
``printf`` formatting
``printf`` Formatting
=====================
The header ``fmt/printf.h`` provides ``printf``-like formatting functionality.
@ -370,6 +445,6 @@ argument type doesn't match its format specification.
.. doxygenfunction:: fprintf(std::FILE *, const S&, const Args&...)
.. doxygenfunction:: fprintf(std::basic_ostream<fmt::char_t<S>>&, const S&, const Args&...)
.. doxygenfunction:: fprintf(std::basic_ostream<Char>&, const S&, const Args&...)
.. doxygenfunction:: sprintf(const S&, const Args&...)

View file

@ -6,7 +6,7 @@ import errno, os, shutil, sys, tempfile
from subprocess import check_call, check_output, CalledProcessError, Popen, PIPE
from distutils.version import LooseVersion
versions = ['1.0.0', '1.1.0', '2.0.0', '3.0.2', '4.0.0', '4.1.0', '5.0.0', '5.1.0', '5.2.0', '5.2.1', '5.3.0']
versions = ['1.0.0', '1.1.0', '2.0.0', '3.0.2', '4.0.0', '4.1.0', '5.0.0', '5.1.0', '5.2.0', '5.2.1', '5.3.0', '6.0.0', '6.1.0', '6.1.1', '6.1.2', '6.2.0']
def pip_install(package, commit=None, **kwargs):
"Install package using pip."
@ -74,7 +74,7 @@ def build_docs(version='dev', **kwargs):
GENERATE_MAN = NO
GENERATE_RTF = NO
CASE_SENSE_NAMES = NO
INPUT = {0}/core.h {0}/format.h {0}/ostream.h \
INPUT = {0}/core.h {0}/format.h {0}/os.h {0}/ostream.h \
{0}/printf.h {0}/time.h
QUIET = YES
JAVADOC_AUTOBRIEF = YES
@ -94,7 +94,7 @@ def build_docs(version='dev', **kwargs):
"FMT_BEGIN_NAMESPACE=namespace fmt {{" \
"FMT_END_NAMESPACE=}}" \
"FMT_STRING_ALIAS=1" \
"FMT_ENABLE_IF_T(B, T)=T"
"FMT_ENABLE_IF(B)="
EXCLUDE_SYMBOLS = fmt::internal::* StringValue write_str
'''.format(include_dir, doxyxml_dir).encode('UTF-8'))
if p.returncode != 0:

View file

@ -1,17 +1,18 @@
Overview
========
**fmt** (formerly cppformat) is an open-source formatting library.
It can be used as a fast and safe alternative to printf and IOStreams.
**{fmt}** is an open-source formatting library providing a fast and safe
alternative to C stdio and C++ iostreams.
.. raw:: html
<div class="panel panel-default">
<div class="panel-heading">What users say:</div>
<div class="panel-body">
Thanks for creating this library. Its been a hole in C++ for a long
time. Ive used both boost::format and loki::SPrintf, and neither felt
like the right answer. This does.
Thanks for creating this library. Its been a hole in C++ for
a long time. Ive used both <code>boost::format</code> and
<code>loki::SPrintf</code>, and neither felt like the right answer.
This does.
</div>
</div>
@ -20,12 +21,13 @@ It can be used as a fast and safe alternative to printf and IOStreams.
Format API
----------
The replacement-based Format API provides a safe alternative to ``printf``,
``sprintf`` and friends with comparable or `better performance
<http://zverovich.net/2013/09/07/integer-to-string-conversion-in-cplusplus.html>`_.
The format API is similar in spirit to the C ``printf`` family of function but
is safer, simpler and serveral times `faster
<http://zverovich.net/2013/09/07/integer-to-string-conversion-in-cplusplus.html>`_
than common standard library implementations.
The `format string syntax <syntax.html>`_ is similar to the one used by
`str.format <http://docs.python.org/3/library/stdtypes.html#str.format>`_
in Python:
`str.format <http://docs.python.org/3/library/stdtypes.html#str.format>`_ in
Python:
.. code:: c++
@ -60,7 +62,7 @@ The Format API also supports positional arguments useful for localization:
fmt::print("I'd rather be {1} than {0}.", "right", "happy");
Named arguments can be created with ``fmt::arg``. This makes it easier to track
what goes where when multiple values are being inserted:
what goes where when multiple arguments are being formatted:
.. code:: c++
@ -72,21 +74,10 @@ an alternative, slightly terser syntax for named arguments:
.. code:: c++
using namespace fmt::literals;
fmt::print("Hello, {name}! The answer is {number}. Goodbye, {name}.",
"name"_a="World", "number"_a=42);
The ``_format`` suffix may be used to format string literals similar to Python:
.. code:: c++
std::string message = "{0}{1}{0}"_format("abra", "cad");
Other than the placement of the format string on the left of the operator,
``_format`` is functionally identical to ``fmt::format``. In order to use the
literal operators, they must be made visible with the directive
``using namespace fmt::literals;``. Note that this brings in only ``_a`` and
``_format`` but nothing else from the ``fmt`` namespace.
.. _safety:
Safety
@ -106,10 +97,10 @@ string", because the argument ``"forty-two"`` is a string while the format code
.. code:: c++
format(fmt("The answer is {:d}"), "forty-two");
format(FMT_STRING("The answer is {:d}"), "forty-two");
reports a compile-time error for the same reason on compilers that support
relaxed ``constexpr``.
relaxed ``constexpr``. See `here <api.html#c.fmt>`_ for details.
The following code
@ -129,7 +120,7 @@ its numeric value being written to the stream (i.e. 1070 instead of letter 'ю'
which is represented by ``L'\x42e'`` if we use Unicode) which is rarely what is
needed.
Compact binary code
Compact Binary Code
-------------------
The library is designed to produce compact per-call compiled code. For example
@ -174,15 +165,16 @@ The library is highly portable and relies only on a small set of C++11 features:
* decltype
* trailing return types
* deleted functions
* alias templates
These are available since GCC 4.4, Clang 2.9 and MSVC 18.0 (2013). For older
compilers use fmt `version 4.x
These are available since GCC 4.8, Clang 3.0 and MSVC 19.0 (2015). For older
compilers use {fmt} `version 4.x
<https://github.com/fmtlib/fmt/releases/tag/4.1.0>`_ which continues to be
maintained and only requires C++98.
The output of all formatting functions is consistent across platforms. In
particular, formatting a floating-point infinity always gives ``inf`` while the
output of ``printf`` is platform-dependent in this case. For example,
output of ``printf`` is platform-dependent. For example,
.. code::
@ -195,9 +187,9 @@ always prints ``inf``.
Ease of Use
-----------
fmt has a small self-contained code base with the core library consisting of
{fmt} has a small self-contained code base with the core library consisting of
just three header files and no external dependencies.
A permissive BSD `license <https://github.com/fmtlib/fmt#license>`_ allows
A permissive MIT `license <https://github.com/fmtlib/fmt#license>`_ allows
using the library both in open-source and commercial projects.
.. raw:: html

View file

@ -76,19 +76,19 @@ The general form of a *standard format specifier* is:
.. productionlist:: sf
format_spec: [[`fill`]`align`][`sign`]["#"]["0"][`width`]["." `precision`][`type`]
fill: <a character other than '{', '}' or '\0'>
align: "<" | ">" | "=" | "^"
fill: <a character other than '{' or '}'>
align: "<" | ">" | "^"
sign: "+" | "-" | " "
width: `integer` | "{" `arg_id` "}"
precision: `integer` | "{" `arg_id` "}"
type: `int_type` | "a" | "A" | "c" | "e" | "E" | "f" | "F" | "g" | "G" | "p" | "s"
int_type: "b" | "B" | "d" | "n" | "o" | "x" | "X"
type: `int_type` | "a" | "A" | "c" | "e" | "E" | "f" | "F" | "g" | "G" | "L" | "p" | "s"
int_type: "b" | "B" | "d" | "o" | "x" | "X"
The *fill* character can be any character other than '{', '}' or '\\0'. The
presence of a fill character is signaled by the character following it, which
must be one of the alignment options. If the second character of *format_spec*
is not a valid alignment option, then it is assumed that both the fill character
and the alignment option are absent.
The *fill* character can be any Unicode code point other than ``'{'`` or
``'}'``. The presence of a fill character is signaled by the character following
it, which must be one of the alignment options. If the second character of
*format_spec* is not a valid alignment option, then it is assumed that both the
fill character and the alignment option are absent.
The meaning of the various alignment options is as follows:
@ -101,11 +101,6 @@ The meaning of the various alignment options is as follows:
| ``'>'`` | Forces the field to be right-aligned within the |
| | available space (this is the default for numbers). |
+---------+----------------------------------------------------------+
| ``'='`` | Forces the padding to be placed after the sign (if any) |
| | but before the digits. This is used for printing fields |
| | in the form '+000000120'. This alignment option is only |
| | valid for numeric types. |
+---------+----------------------------------------------------------+
| ``'^'`` | Forces the field to be centered within the available |
| | space. |
+---------+----------------------------------------------------------+
@ -148,15 +143,17 @@ conversions, trailing zeros are not removed from the result.
.. ifconfig:: False
The ``','`` option signals the use of a comma for a thousands separator.
For a locale aware separator, use the ``'n'`` integer presentation type
For a locale aware separator, use the ``'L'`` integer presentation type
instead.
*width* is a decimal integer defining the minimum field width. If not
specified, then the field width will be determined by the content.
Preceding the *width* field by a zero (``'0'``) character enables
sign-aware zero-padding for numeric types. This is equivalent to a *fill*
character of ``'0'`` with an *alignment* type of ``'='``.
Preceding the *width* field by a zero (``'0'``) character enables sign-aware
zero-padding for numeric types. It forces the padding to be placed after the
sign or base (if any) but before the digits. This is used for printing fields in
the form '+000000120'. This option is only valid for numeric types and it has no
effect on formatting of infinity and NaN.
The *precision* is a decimal number indicating how many digits should be
displayed after the decimal point for a floating-point value formatted with
@ -217,9 +214,9 @@ The available integer presentation types are:
| | ``'#'`` option with this type adds the prefix ``"0X"`` |
| | to the output value. |
+---------+----------------------------------------------------------+
| ``'n'`` | Number. This is the same as ``'d'``, except that it uses |
| | the current locale setting to insert the appropriate |
| | number separator characters. |
| ``'L'`` | Locale-specific format. This is the same as ``'d'``, |
| | except that it uses the current locale setting to insert |
| | the appropriate number separator characters. |
+---------+----------------------------------------------------------+
| none | The same as ``'d'``. |
+---------+----------------------------------------------------------+
@ -244,7 +241,7 @@ The available presentation types for floating-point values are:
| | notation using the letter 'e' to indicate the exponent. |
+---------+----------------------------------------------------------+
| ``'E'`` | Exponent notation. Same as ``'e'`` except it uses an |
| | upper-case 'E' as the separator character. |
| | upper-case ``'E'`` as the separator character. |
+---------+----------------------------------------------------------+
| ``'f'`` | Fixed point. Displays the number as a fixed-point |
| | number. |
@ -264,10 +261,15 @@ The available presentation types for floating-point values are:
| | ``'E'`` if the number gets too large. The |
| | representations of infinity and NaN are uppercased, too. |
+---------+----------------------------------------------------------+
| none | The same as ``'g'``. |
| ``'L'`` | Locale-specific format. This is the same as ``'g'``, |
| | except that it uses the current locale setting to insert |
| | the appropriate number separator characters. |
+---------+----------------------------------------------------------+
| none | Similar to ``'g'``, except that fixed-point notation, |
| | when used, has at least one digit past the decimal |
| | point. The default precision is as high as needed to |
| | represent the particular value. |
+---------+----------------------------------------------------------+
Floating-point formatting is locale-dependent.
.. ifconfig:: False
@ -303,7 +305,7 @@ The available presentation types for pointers are:
.. _formatexamples:
Format examples
Format Examples
===============
This section contains examples of the format syntax and comparison with
@ -318,72 +320,94 @@ following examples.
Accessing arguments by position::
format("{0}, {1}, {2}", 'a', 'b', 'c');
fmt::format("{0}, {1}, {2}", 'a', 'b', 'c');
// Result: "a, b, c"
format("{}, {}, {}", 'a', 'b', 'c');
fmt::format("{}, {}, {}", 'a', 'b', 'c');
// Result: "a, b, c"
format("{2}, {1}, {0}", 'a', 'b', 'c');
fmt::format("{2}, {1}, {0}", 'a', 'b', 'c');
// Result: "c, b, a"
format("{0}{1}{0}", "abra", "cad"); // arguments' indices can be repeated
fmt::format("{0}{1}{0}", "abra", "cad"); // arguments' indices can be repeated
// Result: "abracadabra"
Aligning the text and specifying a width::
format("{:<30}", "left aligned");
fmt::format("{:<30}", "left aligned");
// Result: "left aligned "
format("{:>30}", "right aligned");
fmt::format("{:>30}", "right aligned");
// Result: " right aligned"
format("{:^30}", "centered");
fmt::format("{:^30}", "centered");
// Result: " centered "
format("{:*^30}", "centered"); // use '*' as a fill char
fmt::format("{:*^30}", "centered"); // use '*' as a fill char
// Result: "***********centered***********"
Dynamic width::
format("{:<{}}", "left aligned", 30);
fmt::format("{:<{}}", "left aligned", 30);
// Result: "left aligned "
Dynamic precision::
format("{:.{}f}", 3.14, 1);
fmt::format("{:.{}f}", 3.14, 1);
// Result: "3.1"
Replacing ``%+f``, ``%-f``, and ``% f`` and specifying a sign::
format("{:+f}; {:+f}", 3.14, -3.14); // show it always
fmt::format("{:+f}; {:+f}", 3.14, -3.14); // show it always
// Result: "+3.140000; -3.140000"
format("{: f}; {: f}", 3.14, -3.14); // show a space for positive numbers
fmt::format("{: f}; {: f}", 3.14, -3.14); // show a space for positive numbers
// Result: " 3.140000; -3.140000"
format("{:-f}; {:-f}", 3.14, -3.14); // show only the minus -- same as '{:f}; {:f}'
fmt::format("{:-f}; {:-f}", 3.14, -3.14); // show only the minus -- same as '{:f}; {:f}'
// Result: "3.140000; -3.140000"
Replacing ``%x`` and ``%o`` and converting the value to different bases::
format("int: {0:d}; hex: {0:x}; oct: {0:o}; bin: {0:b}", 42);
fmt::format("int: {0:d}; hex: {0:x}; oct: {0:o}; bin: {0:b}", 42);
// Result: "int: 42; hex: 2a; oct: 52; bin: 101010"
// with 0x or 0 or 0b as prefix:
format("int: {0:d}; hex: {0:#x}; oct: {0:#o}; bin: {0:#b}", 42);
fmt::format("int: {0:d}; hex: {0:#x}; oct: {0:#o}; bin: {0:#b}", 42);
// Result: "int: 42; hex: 0x2a; oct: 052; bin: 0b101010"
Padded hex byte with prefix and always prints both hex characters::
format("{:#04x}", 0);
fmt::format("{:#04x}", 0);
// Result: "0x00"
Box drawing using Unicode fill::
fmt::print(
"┌{0:─^{2}}┐\n"
"│{1: ^{2}}│\n"
"└{0:─^{2}}┘\n", "", "Hello, world!", 20);
prints::
┌────────────────────┐
│ Hello, world! │
└────────────────────┘
Using type-specific formatting::
#include <fmt/chrono.h>
auto t = tm();
t.tm_year = 2010 - 1900;
t.tm_mon = 6;
t.tm_mday = 4;
t.tm_hour = 12;
t.tm_min = 15;
t.tm_sec = 58;
fmt::print("{:%Y-%m-%d %H:%M:%S}", t);
// Prints: 2010-08-04 12:15:58
Using the comma as a thousands separator::
#include <fmt/locale.h>
auto s = fmt::format(std::locale("en_US.UTF-8"), "{:L}", 1234567890);
// s == "1,234,567,890"
.. ifconfig:: False
Using the comma as a thousands separator::
format("{:,}", 1234567890);
'1,234,567,890'
Using type-specific formatting::
>>> import datetime
>>> d = datetime.datetime(2010, 7, 4, 12, 15, 58)
Format("{:%Y-%m-%d %H:%M:%S}") << d)
'2010-07-04 12:15:58'
Nesting arguments and more complex examples::
>>> for align, text in zip('<^>', ['left', 'center', 'right']):
@ -412,4 +436,3 @@ Padded hex byte with prefix and always prints both hex characters::
9 9 11 1001
10 A 12 1010
11 B 13 1011

View file

@ -2,21 +2,15 @@
Usage
*****
To use the fmt library, add :file:`format.h` and :file:`format.cc` from
a `release archive <https://github.com/fmtlib/fmt/releases/latest>`_
or the `Git repository <https://github.com/fmtlib/fmt>`_ to your project.
To use the {fmt} library, add :file:`fmt/core.h`, :file:`fmt/format.h`,
:file:`fmt/format-inl.h`, :file:`src/format.cc` and optionally other headers
from a `release archive <https://github.com/fmtlib/fmt/releases/latest>`_ or
the `Git repository <https://github.com/fmtlib/fmt>`_ to your project.
Alternatively, you can :ref:`build the library with CMake <building>`.
If you are using Visual C++ with precompiled headers, you might need to add
the line ::
#include "stdafx.h"
before other includes in :file:`format.cc`.
.. _building:
Building the library
Building the Library
====================
The included `CMake build script`__ can be used to build the fmt
@ -31,7 +25,7 @@ workflow starts with::
mkdir build # Create a directory to hold the build output.
cd build
cmake <path/to/fmt> # Generate native build scripts.
cmake .. # Generate native build scripts.
where :file:`{<path/to/fmt>}` is a path to the ``fmt`` repository.
@ -58,8 +52,14 @@ To build a `shared library`__ set the ``BUILD_SHARED_LIBS`` CMake variable to
__ http://en.wikipedia.org/wiki/Library_%28computing%29#Shared_libraries
Header-only usage with CMake
============================
Installing the Library
======================
After building the library you can install it on a Unix-like system by running
:command:`sudo make install`.
Usage with CMake
================
You can add the ``fmt`` library directory into your project and include it in
your ``CMakeLists.txt`` file::
@ -79,11 +79,11 @@ You can detect and use an installed version of {fmt} as follows::
find_package(fmt)
target_link_libraries(<your-target> fmt::fmt)
Setting up your target to use a header-only version of ``fmt`` is equaly easy::
Setting up your target to use a header-only version of ``fmt`` is equally easy::
target_link_libraries(<your-target> PRIVATE fmt-header-only)
target_link_libraries(<your-target> PRIVATE fmt::fmt-header-only)
Building the documentation
Building the Documentation
==========================
To build the documentation you need the following software installed on your
@ -104,6 +104,32 @@ the previous section. Then compile the ``doc`` target/project, for example::
This will generate the HTML documentation in ``doc/html``.
Conda
=====
fmt can be installed on Linux, macOS and Windows with
`Conda <https://docs.conda.io/en/latest/>`__, using its
`conda-forge <https://conda-forge.org>`__
`package <https://github.com/conda-forge/fmt-feedstock>`__, as follows::
conda install -c conda-forge fmt
Vcpkg
=====
You can download and install fmt using the `vcpkg
<https://github.com/Microsoft/vcpkg>`__ dependency manager::
git clone https://github.com/Microsoft/vcpkg.git
cd vcpkg
./bootstrap-vcpkg.sh
./vcpkg integrate install
./vcpkg install fmt
The fmt port in vcpkg is kept up to date by Microsoft team members and community
contributors. If the version is out of date, please `create an issue or pull
request <https://github.com/Microsoft/vcpkg>`__ on the vcpkg repository.
Android NDK
===========

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@ -12,41 +12,6 @@
FMT_BEGIN_NAMESPACE
#ifdef FMT_DEPRECATED_COLORS
// color and (v)print_colored are deprecated.
enum color { black, red, green, yellow, blue, magenta, cyan, white };
FMT_API void vprint_colored(color c, string_view format, format_args args);
FMT_API void vprint_colored(color c, wstring_view format, wformat_args args);
template <typename... Args>
inline void print_colored(color c, string_view format_str,
const Args & ... args) {
vprint_colored(c, format_str, make_format_args(args...));
}
template <typename... Args>
inline void print_colored(color c, wstring_view format_str,
const Args & ... args) {
vprint_colored(c, format_str, make_format_args<wformat_context>(args...));
}
inline void vprint_colored(color c, string_view format, format_args args) {
char escape[] = "\x1b[30m";
escape[3] = static_cast<char>('0' + c);
std::fputs(escape, stdout);
vprint(format, args);
std::fputs(internal::data::RESET_COLOR, stdout);
}
inline void vprint_colored(color c, wstring_view format, wformat_args args) {
wchar_t escape[] = L"\x1b[30m";
escape[3] = static_cast<wchar_t>('0' + c);
std::fputws(escape, stdout);
vprint(format, args);
std::fputws(internal::data::WRESET_COLOR, stdout);
}
#else
enum class color : uint32_t {
alice_blue = 0xF0F8FF, // rgb(240,248,255)
antique_white = 0xFAEBD7, // rgb(250,235,215)
@ -208,26 +173,25 @@ enum class terminal_color : uint8_t {
bright_magenta,
bright_cyan,
bright_white
}; // enum class terminal_color
};
enum class emphasis : uint8_t {
bold = 1,
italic = 1 << 1,
underline = 1 << 2,
strikethrough = 1 << 3
}; // enum class emphasis
};
// rgb is a struct for red, green and blue colors.
// We use rgb as name because some editors will show it as color direct in the
// editor.
// Using the name "rgb" makes some editors show the color in a tooltip.
struct rgb {
FMT_CONSTEXPR_DECL rgb() : r(0), g(0), b(0) {}
FMT_CONSTEXPR_DECL rgb(uint8_t r_, uint8_t g_, uint8_t b_)
: r(r_), g(g_), b(b_) {}
FMT_CONSTEXPR_DECL rgb(uint32_t hex)
: r((hex >> 16) & 0xFF), g((hex >> 8) & 0xFF), b((hex) & 0xFF) {}
FMT_CONSTEXPR_DECL rgb(color hex)
: r((uint32_t(hex) >> 16) & 0xFF), g((uint32_t(hex) >> 8) & 0xFF),
FMT_CONSTEXPR rgb() : r(0), g(0), b(0) {}
FMT_CONSTEXPR rgb(uint8_t r_, uint8_t g_, uint8_t b_) : r(r_), g(g_), b(b_) {}
FMT_CONSTEXPR rgb(uint32_t hex)
: r((hex >> 16) & 0xFF), g((hex >> 8) & 0xFF), b(hex & 0xFF) {}
FMT_CONSTEXPR rgb(color hex)
: r((uint32_t(hex) >> 16) & 0xFF),
g((uint32_t(hex) >> 8) & 0xFF),
b(uint32_t(hex) & 0xFF) {}
uint8_t r;
uint8_t g;
@ -238,19 +202,17 @@ namespace internal {
// color is a struct of either a rgb color or a terminal color.
struct color_type {
FMT_CONSTEXPR color_type() FMT_NOEXCEPT
: is_rgb(), value{} {}
FMT_CONSTEXPR color_type(color rgb_color) FMT_NOEXCEPT
: is_rgb(true), value{} {
FMT_CONSTEXPR color_type() FMT_NOEXCEPT : is_rgb(), value{} {}
FMT_CONSTEXPR color_type(color rgb_color) FMT_NOEXCEPT : is_rgb(true),
value{} {
value.rgb_color = static_cast<uint32_t>(rgb_color);
}
FMT_CONSTEXPR color_type(rgb rgb_color) FMT_NOEXCEPT
: is_rgb(true), value{} {
value.rgb_color = (static_cast<uint32_t>(rgb_color.r) << 16)
| (static_cast<uint32_t>(rgb_color.g) << 8) | rgb_color.b;
FMT_CONSTEXPR color_type(rgb rgb_color) FMT_NOEXCEPT : is_rgb(true), value{} {
value.rgb_color = (static_cast<uint32_t>(rgb_color.r) << 16) |
(static_cast<uint32_t>(rgb_color.g) << 8) | rgb_color.b;
}
FMT_CONSTEXPR color_type(terminal_color term_color) FMT_NOEXCEPT
: is_rgb(), value{} {
FMT_CONSTEXPR color_type(terminal_color term_color) FMT_NOEXCEPT : is_rgb(),
value{} {
value.term_color = static_cast<uint8_t>(term_color);
}
bool is_rgb;
@ -265,15 +227,17 @@ struct color_type {
class text_style {
public:
FMT_CONSTEXPR text_style(emphasis em = emphasis()) FMT_NOEXCEPT
: set_foreground_color(), set_background_color(), ems(em) {}
: set_foreground_color(),
set_background_color(),
ems(em) {}
FMT_CONSTEXPR text_style &operator|=(const text_style &rhs) {
FMT_CONSTEXPR text_style& operator|=(const text_style& rhs) {
if (!set_foreground_color) {
set_foreground_color = rhs.set_foreground_color;
foreground_color = rhs.foreground_color;
} else if (rhs.set_foreground_color) {
if (!foreground_color.is_rgb || !rhs.foreground_color.is_rgb)
throw format_error("can't OR a terminal color");
FMT_THROW(format_error("can't OR a terminal color"));
foreground_color.value.rgb_color |= rhs.foreground_color.value.rgb_color;
}
@ -282,7 +246,7 @@ class text_style {
background_color = rhs.background_color;
} else if (rhs.set_background_color) {
if (!background_color.is_rgb || !rhs.background_color.is_rgb)
throw format_error("can't OR a terminal color");
FMT_THROW(format_error("can't OR a terminal color"));
background_color.value.rgb_color |= rhs.background_color.value.rgb_color;
}
@ -291,18 +255,18 @@ class text_style {
return *this;
}
friend FMT_CONSTEXPR
text_style operator|(text_style lhs, const text_style &rhs) {
friend FMT_CONSTEXPR text_style operator|(text_style lhs,
const text_style& rhs) {
return lhs |= rhs;
}
FMT_CONSTEXPR text_style &operator&=(const text_style &rhs) {
FMT_CONSTEXPR text_style& operator&=(const text_style& rhs) {
if (!set_foreground_color) {
set_foreground_color = rhs.set_foreground_color;
foreground_color = rhs.foreground_color;
} else if (rhs.set_foreground_color) {
if (!foreground_color.is_rgb || !rhs.foreground_color.is_rgb)
throw format_error("can't AND a terminal color");
FMT_THROW(format_error("can't AND a terminal color"));
foreground_color.value.rgb_color &= rhs.foreground_color.value.rgb_color;
}
@ -311,7 +275,7 @@ class text_style {
background_color = rhs.background_color;
} else if (rhs.set_background_color) {
if (!background_color.is_rgb || !rhs.background_color.is_rgb)
throw format_error("can't AND a terminal color");
FMT_THROW(format_error("can't AND a terminal color"));
background_color.value.rgb_color &= rhs.background_color.value.rgb_color;
}
@ -320,8 +284,8 @@ class text_style {
return *this;
}
friend FMT_CONSTEXPR
text_style operator&(text_style lhs, const text_style &rhs) {
friend FMT_CONSTEXPR text_style operator&(text_style lhs,
const text_style& rhs) {
return lhs &= rhs;
}
@ -335,19 +299,19 @@ class text_style {
return static_cast<uint8_t>(ems) != 0;
}
FMT_CONSTEXPR internal::color_type get_foreground() const FMT_NOEXCEPT {
assert(has_foreground() && "no foreground specified for this style");
FMT_ASSERT(has_foreground(), "no foreground specified for this style");
return foreground_color;
}
FMT_CONSTEXPR internal::color_type get_background() const FMT_NOEXCEPT {
assert(has_background() && "no background specified for this style");
FMT_ASSERT(has_background(), "no background specified for this style");
return background_color;
}
FMT_CONSTEXPR emphasis get_emphasis() const FMT_NOEXCEPT {
assert(has_emphasis() && "no emphasis specified for this style");
FMT_ASSERT(has_emphasis(), "no emphasis specified for this style");
return ems;
}
private:
private:
FMT_CONSTEXPR text_style(bool is_foreground,
internal::color_type text_color) FMT_NOEXCEPT
: set_foreground_color(),
@ -388,19 +352,17 @@ FMT_CONSTEXPR text_style operator|(emphasis lhs, emphasis rhs) FMT_NOEXCEPT {
namespace internal {
template <typename Char>
struct ansi_color_escape {
template <typename Char> struct ansi_color_escape {
FMT_CONSTEXPR ansi_color_escape(internal::color_type text_color,
const char * esc) FMT_NOEXCEPT {
const char* esc) FMT_NOEXCEPT {
// If we have a terminal color, we need to output another escape code
// sequence.
if (!text_color.is_rgb) {
bool is_background = esc == internal::data::BACKGROUND_COLOR;
bool is_background = esc == internal::data::background_color;
uint32_t value = text_color.value.term_color;
// Background ASCII codes are the same as the foreground ones but with
// 10 more.
if (is_background)
value += 10u;
if (is_background) value += 10u;
std::size_t index = 0;
buffer[index++] = static_cast<Char>('\x1b');
@ -430,19 +392,15 @@ struct ansi_color_escape {
FMT_CONSTEXPR ansi_color_escape(emphasis em) FMT_NOEXCEPT {
uint8_t em_codes[4] = {};
uint8_t em_bits = static_cast<uint8_t>(em);
if (em_bits & static_cast<uint8_t>(emphasis::bold))
em_codes[0] = 1;
if (em_bits & static_cast<uint8_t>(emphasis::italic))
em_codes[1] = 3;
if (em_bits & static_cast<uint8_t>(emphasis::underline))
em_codes[2] = 4;
if (em_bits & static_cast<uint8_t>(emphasis::bold)) em_codes[0] = 1;
if (em_bits & static_cast<uint8_t>(emphasis::italic)) em_codes[1] = 3;
if (em_bits & static_cast<uint8_t>(emphasis::underline)) em_codes[2] = 4;
if (em_bits & static_cast<uint8_t>(emphasis::strikethrough))
em_codes[3] = 9;
std::size_t index = 0;
for (int i = 0; i < 4; ++i) {
if (!em_codes[i])
continue;
if (!em_codes[i]) continue;
buffer[index++] = static_cast<Char>('\x1b');
buffer[index++] = static_cast<Char>('[');
buffer[index++] = static_cast<Char>('0' + em_codes[i]);
@ -450,12 +408,17 @@ struct ansi_color_escape {
}
buffer[index++] = static_cast<Char>(0);
}
FMT_CONSTEXPR operator const Char *() const FMT_NOEXCEPT { return buffer; }
FMT_CONSTEXPR operator const Char*() const FMT_NOEXCEPT { return buffer; }
private:
FMT_CONSTEXPR const Char* begin() const FMT_NOEXCEPT { return buffer; }
FMT_CONSTEXPR const Char* end() const FMT_NOEXCEPT {
return buffer + std::char_traits<Char>::length(buffer);
}
private:
Char buffer[7u + 3u * 4u + 1u];
static FMT_CONSTEXPR void to_esc(uint8_t c, Char *out,
static FMT_CONSTEXPR void to_esc(uint8_t c, Char* out,
char delimiter) FMT_NOEXCEPT {
out[0] = static_cast<Char>('0' + c / 100);
out[1] = static_cast<Char>('0' + c / 10 % 10);
@ -465,77 +428,81 @@ private:
};
template <typename Char>
FMT_CONSTEXPR ansi_color_escape<Char>
make_foreground_color(internal::color_type foreground) FMT_NOEXCEPT {
return ansi_color_escape<Char>(foreground, internal::data::FOREGROUND_COLOR);
FMT_CONSTEXPR ansi_color_escape<Char> make_foreground_color(
internal::color_type foreground) FMT_NOEXCEPT {
return ansi_color_escape<Char>(foreground, internal::data::foreground_color);
}
template <typename Char>
FMT_CONSTEXPR ansi_color_escape<Char>
make_background_color(internal::color_type background) FMT_NOEXCEPT {
return ansi_color_escape<Char>(background, internal::data::BACKGROUND_COLOR);
FMT_CONSTEXPR ansi_color_escape<Char> make_background_color(
internal::color_type background) FMT_NOEXCEPT {
return ansi_color_escape<Char>(background, internal::data::background_color);
}
template <typename Char>
FMT_CONSTEXPR ansi_color_escape<Char>
make_emphasis(emphasis em) FMT_NOEXCEPT {
FMT_CONSTEXPR ansi_color_escape<Char> make_emphasis(emphasis em) FMT_NOEXCEPT {
return ansi_color_escape<Char>(em);
}
template <typename Char>
inline void fputs(const Char *chars, FILE *stream) FMT_NOEXCEPT {
inline void fputs(const Char* chars, FILE* stream) FMT_NOEXCEPT {
std::fputs(chars, stream);
}
template <>
inline void fputs<wchar_t>(const wchar_t *chars, FILE *stream) FMT_NOEXCEPT {
inline void fputs<wchar_t>(const wchar_t* chars, FILE* stream) FMT_NOEXCEPT {
std::fputws(chars, stream);
}
template <typename Char> inline void reset_color(FILE* stream) FMT_NOEXCEPT {
fputs(internal::data::reset_color, stream);
}
template <> inline void reset_color<wchar_t>(FILE* stream) FMT_NOEXCEPT {
fputs(internal::data::wreset_color, stream);
}
template <typename Char>
inline void reset_color(FILE *stream) FMT_NOEXCEPT {
fputs(internal::data::RESET_COLOR, stream);
inline void reset_color(basic_memory_buffer<Char>& buffer) FMT_NOEXCEPT {
const char* begin = data::reset_color;
const char* end = begin + sizeof(data::reset_color) - 1;
buffer.append(begin, end);
}
template <>
inline void reset_color<wchar_t>(FILE *stream) FMT_NOEXCEPT {
fputs(internal::data::WRESET_COLOR, stream);
}
// The following specialiazation disables using std::FILE as a character type,
// which is needed because or else
// fmt::print(stderr, fmt::emphasis::bold, "");
// would take stderr (a std::FILE *) as the format string.
template <>
struct is_string<std::FILE *> : std::false_type {};
template <>
struct is_string<const std::FILE *> : std::false_type {};
} // namespace internal
template <
typename S, typename Char = typename internal::char_t<S>::type>
void vprint(std::FILE *f, const text_style &ts, const S &format,
basic_format_args<typename buffer_context<Char>::type> args) {
template <typename Char>
void vformat_to(basic_memory_buffer<Char>& buf, const text_style& ts,
basic_string_view<Char> format_str,
basic_format_args<buffer_context<Char>> args) {
bool has_style = false;
if (ts.has_emphasis()) {
has_style = true;
internal::fputs<Char>(
internal::make_emphasis<Char>(ts.get_emphasis()), f);
auto emphasis = internal::make_emphasis<Char>(ts.get_emphasis());
buf.append(emphasis.begin(), emphasis.end());
}
if (ts.has_foreground()) {
has_style = true;
internal::fputs<Char>(
internal::make_foreground_color<Char>(ts.get_foreground()), f);
auto foreground =
internal::make_foreground_color<Char>(ts.get_foreground());
buf.append(foreground.begin(), foreground.end());
}
if (ts.has_background()) {
has_style = true;
internal::fputs<Char>(
internal::make_background_color<Char>(ts.get_background()), f);
}
vprint(f, format, args);
if (has_style) {
internal::reset_color<Char>(f);
auto background =
internal::make_background_color<Char>(ts.get_background());
buf.append(background.begin(), background.end());
}
internal::vformat_to(buf, format_str, args);
if (has_style) internal::reset_color<Char>(buf);
}
} // namespace internal
template <typename S, typename Char = char_t<S>>
void vprint(std::FILE* f, const text_style& ts, const S& format,
basic_format_args<buffer_context<Char>> args) {
basic_memory_buffer<Char> buf;
internal::vformat_to(buf, ts, to_string_view(format), args);
buf.push_back(Char(0));
internal::fputs(buf.data(), f);
}
/**
@ -545,15 +512,14 @@ void vprint(std::FILE *f, const text_style &ts, const S &format,
fmt::print(fmt::emphasis::bold | fg(fmt::color::red),
"Elapsed time: {0:.2f} seconds", 1.23);
*/
template <typename String, typename... Args>
typename std::enable_if<internal::is_string<String>::value>::type print(
std::FILE *f, const text_style &ts, const String &format_str,
const Args &... args) {
template <typename S, typename... Args,
FMT_ENABLE_IF(internal::is_string<S>::value)>
void print(std::FILE* f, const text_style& ts, const S& format_str,
const Args&... args) {
internal::check_format_string<Args...>(format_str);
typedef typename internal::char_t<String>::type char_t;
typedef typename buffer_context<char_t>::type context_t;
format_arg_store<context_t, Args...> as{args...};
vprint(f, ts, format_str, basic_format_args<context_t>(as));
using context = buffer_context<char_t<S>>;
format_arg_store<context, Args...> as{args...};
vprint(f, ts, format_str, basic_format_args<context>(as));
}
/**
@ -563,14 +529,39 @@ typename std::enable_if<internal::is_string<String>::value>::type print(
fmt::print(fmt::emphasis::bold | fg(fmt::color::red),
"Elapsed time: {0:.2f} seconds", 1.23);
*/
template <typename String, typename... Args>
typename std::enable_if<internal::is_string<String>::value>::type print(
const text_style &ts, const String &format_str,
const Args &... args) {
template <typename S, typename... Args,
FMT_ENABLE_IF(internal::is_string<S>::value)>
void print(const text_style& ts, const S& format_str, const Args&... args) {
return print(stdout, ts, format_str, args...);
}
#endif
template <typename S, typename Char = char_t<S>>
inline std::basic_string<Char> vformat(
const text_style& ts, const S& format_str,
basic_format_args<buffer_context<type_identity_t<Char>>> args) {
basic_memory_buffer<Char> buf;
internal::vformat_to(buf, ts, to_string_view(format_str), args);
return fmt::to_string(buf);
}
/**
\rst
Formats arguments and returns the result as a string using ANSI
escape sequences to specify text formatting.
**Example**::
#include <fmt/color.h>
std::string message = fmt::format(fmt::emphasis::bold | fg(fmt::color::red),
"The answer is {}", 42);
\endrst
*/
template <typename S, typename... Args, typename Char = char_t<S>>
inline std::basic_string<Char> format(const text_style& ts, const S& format_str,
const Args&... args) {
return vformat(ts, to_string_view(format_str),
internal::make_args_checked<Args...>(format_str, args...));
}
FMT_END_NAMESPACE

595
include/fmt/compile.h Normal file
View file

@ -0,0 +1,595 @@
// Formatting library for C++ - experimental format string compilation
//
// Copyright (c) 2012 - present, Victor Zverovich and fmt contributors
// All rights reserved.
//
// For the license information refer to format.h.
#ifndef FMT_COMPILE_H_
#define FMT_COMPILE_H_
#include <vector>
#include "format.h"
FMT_BEGIN_NAMESPACE
namespace internal {
// Part of a compiled format string. It can be either literal text or a
// replacement field.
template <typename Char> struct format_part {
enum class kind { arg_index, arg_name, text, replacement };
struct replacement {
arg_ref<Char> arg_id;
dynamic_format_specs<Char> specs;
};
kind part_kind;
union value {
int arg_index;
basic_string_view<Char> str;
replacement repl;
FMT_CONSTEXPR value(int index = 0) : arg_index(index) {}
FMT_CONSTEXPR value(basic_string_view<Char> s) : str(s) {}
FMT_CONSTEXPR value(replacement r) : repl(r) {}
} val;
// Position past the end of the argument id.
const Char* arg_id_end = nullptr;
FMT_CONSTEXPR format_part(kind k = kind::arg_index, value v = {})
: part_kind(k), val(v) {}
static FMT_CONSTEXPR format_part make_arg_index(int index) {
return format_part(kind::arg_index, index);
}
static FMT_CONSTEXPR format_part make_arg_name(basic_string_view<Char> name) {
return format_part(kind::arg_name, name);
}
static FMT_CONSTEXPR format_part make_text(basic_string_view<Char> text) {
return format_part(kind::text, text);
}
static FMT_CONSTEXPR format_part make_replacement(replacement repl) {
return format_part(kind::replacement, repl);
}
};
template <typename Char> struct part_counter {
unsigned num_parts = 0;
FMT_CONSTEXPR void on_text(const Char* begin, const Char* end) {
if (begin != end) ++num_parts;
}
FMT_CONSTEXPR void on_arg_id() { ++num_parts; }
FMT_CONSTEXPR void on_arg_id(int) { ++num_parts; }
FMT_CONSTEXPR void on_arg_id(basic_string_view<Char>) { ++num_parts; }
FMT_CONSTEXPR void on_replacement_field(const Char*) {}
FMT_CONSTEXPR const Char* on_format_specs(const Char* begin,
const Char* end) {
// Find the matching brace.
unsigned brace_counter = 0;
for (; begin != end; ++begin) {
if (*begin == '{') {
++brace_counter;
} else if (*begin == '}') {
if (brace_counter == 0u) break;
--brace_counter;
}
}
return begin;
}
FMT_CONSTEXPR void on_error(const char*) {}
};
// Counts the number of parts in a format string.
template <typename Char>
FMT_CONSTEXPR unsigned count_parts(basic_string_view<Char> format_str) {
part_counter<Char> counter;
parse_format_string<true>(format_str, counter);
return counter.num_parts;
}
template <typename Char, typename PartHandler>
class format_string_compiler : public error_handler {
private:
using part = format_part<Char>;
PartHandler handler_;
part part_;
basic_string_view<Char> format_str_;
basic_format_parse_context<Char> parse_context_;
public:
FMT_CONSTEXPR format_string_compiler(basic_string_view<Char> format_str,
PartHandler handler)
: handler_(handler),
format_str_(format_str),
parse_context_(format_str) {}
FMT_CONSTEXPR void on_text(const Char* begin, const Char* end) {
if (begin != end)
handler_(part::make_text({begin, to_unsigned(end - begin)}));
}
FMT_CONSTEXPR void on_arg_id() {
part_ = part::make_arg_index(parse_context_.next_arg_id());
}
FMT_CONSTEXPR void on_arg_id(int id) {
parse_context_.check_arg_id(id);
part_ = part::make_arg_index(id);
}
FMT_CONSTEXPR void on_arg_id(basic_string_view<Char> id) {
part_ = part::make_arg_name(id);
}
FMT_CONSTEXPR void on_replacement_field(const Char* ptr) {
part_.arg_id_end = ptr;
handler_(part_);
}
FMT_CONSTEXPR const Char* on_format_specs(const Char* begin,
const Char* end) {
auto repl = typename part::replacement();
dynamic_specs_handler<basic_format_parse_context<Char>> handler(
repl.specs, parse_context_);
auto it = parse_format_specs(begin, end, handler);
if (*it != '}') on_error("missing '}' in format string");
repl.arg_id = part_.part_kind == part::kind::arg_index
? arg_ref<Char>(part_.val.arg_index)
: arg_ref<Char>(part_.val.str);
auto part = part::make_replacement(repl);
part.arg_id_end = begin;
handler_(part);
return it;
}
};
// Compiles a format string and invokes handler(part) for each parsed part.
template <bool IS_CONSTEXPR, typename Char, typename PartHandler>
FMT_CONSTEXPR void compile_format_string(basic_string_view<Char> format_str,
PartHandler handler) {
parse_format_string<IS_CONSTEXPR>(
format_str,
format_string_compiler<Char, PartHandler>(format_str, handler));
}
template <typename Range, typename Context, typename Id>
void format_arg(
basic_format_parse_context<typename Range::value_type>& parse_ctx,
Context& ctx, Id arg_id) {
ctx.advance_to(
visit_format_arg(arg_formatter<Range>(ctx, &parse_ctx), ctx.arg(arg_id)));
}
// vformat_to is defined in a subnamespace to prevent ADL.
namespace cf {
template <typename Context, typename Range, typename CompiledFormat>
auto vformat_to(Range out, CompiledFormat& cf, basic_format_args<Context> args)
-> typename Context::iterator {
using char_type = typename Context::char_type;
basic_format_parse_context<char_type> parse_ctx(
to_string_view(cf.format_str_));
Context ctx(out.begin(), args);
const auto& parts = cf.parts();
for (auto part_it = std::begin(parts); part_it != std::end(parts);
++part_it) {
const auto& part = *part_it;
const auto& value = part.val;
using format_part_t = format_part<char_type>;
switch (part.part_kind) {
case format_part_t::kind::text: {
const auto text = value.str;
auto output = ctx.out();
auto&& it = reserve(output, text.size());
it = std::copy_n(text.begin(), text.size(), it);
ctx.advance_to(output);
break;
}
case format_part_t::kind::arg_index:
advance_to(parse_ctx, part.arg_id_end);
internal::format_arg<Range>(parse_ctx, ctx, value.arg_index);
break;
case format_part_t::kind::arg_name:
advance_to(parse_ctx, part.arg_id_end);
internal::format_arg<Range>(parse_ctx, ctx, value.str);
break;
case format_part_t::kind::replacement: {
const auto& arg_id_value = value.repl.arg_id.val;
const auto arg = value.repl.arg_id.kind == arg_id_kind::index
? ctx.arg(arg_id_value.index)
: ctx.arg(arg_id_value.name);
auto specs = value.repl.specs;
handle_dynamic_spec<width_checker>(specs.width, specs.width_ref, ctx);
handle_dynamic_spec<precision_checker>(specs.precision,
specs.precision_ref, ctx);
error_handler h;
numeric_specs_checker<error_handler> checker(h, arg.type());
if (specs.align == align::numeric) checker.require_numeric_argument();
if (specs.sign != sign::none) checker.check_sign();
if (specs.alt) checker.require_numeric_argument();
if (specs.precision >= 0) checker.check_precision();
advance_to(parse_ctx, part.arg_id_end);
ctx.advance_to(
visit_format_arg(arg_formatter<Range>(ctx, nullptr, &specs), arg));
break;
}
}
}
return ctx.out();
}
} // namespace cf
struct basic_compiled_format {};
template <typename S, typename = void>
struct compiled_format_base : basic_compiled_format {
using char_type = char_t<S>;
using parts_container = std::vector<internal::format_part<char_type>>;
parts_container compiled_parts;
explicit compiled_format_base(basic_string_view<char_type> format_str) {
compile_format_string<false>(format_str,
[this](const format_part<char_type>& part) {
compiled_parts.push_back(part);
});
}
const parts_container& parts() const { return compiled_parts; }
};
template <typename Char, unsigned N> struct format_part_array {
format_part<Char> data[N] = {};
FMT_CONSTEXPR format_part_array() = default;
};
template <typename Char, unsigned N>
FMT_CONSTEXPR format_part_array<Char, N> compile_to_parts(
basic_string_view<Char> format_str) {
format_part_array<Char, N> parts;
unsigned counter = 0;
// This is not a lambda for compatibility with older compilers.
struct {
format_part<Char>* parts;
unsigned* counter;
FMT_CONSTEXPR void operator()(const format_part<Char>& part) {
parts[(*counter)++] = part;
}
} collector{parts.data, &counter};
compile_format_string<true>(format_str, collector);
if (counter < N) {
parts.data[counter] =
format_part<Char>::make_text(basic_string_view<Char>());
}
return parts;
}
template <typename T> constexpr const T& constexpr_max(const T& a, const T& b) {
return (a < b) ? b : a;
}
template <typename S>
struct compiled_format_base<S, enable_if_t<is_compile_string<S>::value>>
: basic_compiled_format {
using char_type = char_t<S>;
FMT_CONSTEXPR explicit compiled_format_base(basic_string_view<char_type>) {}
// Workaround for old compilers. Format string compilation will not be
// performed there anyway.
#if FMT_USE_CONSTEXPR
static FMT_CONSTEXPR_DECL const unsigned num_format_parts =
constexpr_max(count_parts(to_string_view(S())), 1u);
#else
static const unsigned num_format_parts = 1;
#endif
using parts_container = format_part<char_type>[num_format_parts];
const parts_container& parts() const {
static FMT_CONSTEXPR_DECL const auto compiled_parts =
compile_to_parts<char_type, num_format_parts>(
internal::to_string_view(S()));
return compiled_parts.data;
}
};
template <typename S, typename... Args>
class compiled_format : private compiled_format_base<S> {
public:
using typename compiled_format_base<S>::char_type;
private:
basic_string_view<char_type> format_str_;
template <typename Context, typename Range, typename CompiledFormat>
friend auto cf::vformat_to(Range out, CompiledFormat& cf,
basic_format_args<Context> args) ->
typename Context::iterator;
public:
compiled_format() = delete;
explicit constexpr compiled_format(basic_string_view<char_type> format_str)
: compiled_format_base<S>(format_str), format_str_(format_str) {}
};
#ifdef __cpp_if_constexpr
template <typename... Args> struct type_list {};
// Returns a reference to the argument at index N from [first, rest...].
template <int N, typename T, typename... Args>
constexpr const auto& get(const T& first, const Args&... rest) {
static_assert(N < 1 + sizeof...(Args), "index is out of bounds");
if constexpr (N == 0)
return first;
else
return get<N - 1>(rest...);
}
template <int N, typename> struct get_type_impl;
template <int N, typename... Args> struct get_type_impl<N, type_list<Args...>> {
using type = remove_cvref_t<decltype(get<N>(std::declval<Args>()...))>;
};
template <int N, typename T>
using get_type = typename get_type_impl<N, T>::type;
template <typename T> struct is_compiled_format : std::false_type {};
template <typename Char> struct text {
basic_string_view<Char> data;
using char_type = Char;
template <typename OutputIt, typename... Args>
OutputIt format(OutputIt out, const Args&...) const {
// TODO: reserve
return copy_str<Char>(data.begin(), data.end(), out);
}
};
template <typename Char>
struct is_compiled_format<text<Char>> : std::true_type {};
template <typename Char>
constexpr text<Char> make_text(basic_string_view<Char> s, size_t pos,
size_t size) {
return {{&s[pos], size}};
}
template <typename Char, typename OutputIt, typename T,
std::enable_if_t<std::is_integral_v<T>, int> = 0>
OutputIt format_default(OutputIt out, T value) {
// TODO: reserve
format_int fi(value);
return std::copy(fi.data(), fi.data() + fi.size(), out);
}
template <typename Char, typename OutputIt>
OutputIt format_default(OutputIt out, double value) {
writer w(out);
w.write(value);
return w.out();
}
template <typename Char, typename OutputIt>
OutputIt format_default(OutputIt out, Char value) {
*out++ = value;
return out;
}
template <typename Char, typename OutputIt>
OutputIt format_default(OutputIt out, const Char* value) {
auto length = std::char_traits<Char>::length(value);
return copy_str<Char>(value, value + length, out);
}
// A replacement field that refers to argument N.
template <typename Char, typename T, int N> struct field {
using char_type = Char;
template <typename OutputIt, typename... Args>
OutputIt format(OutputIt out, const Args&... args) const {
// This ensures that the argument type is convertile to `const T&`.
const T& arg = get<N>(args...);
return format_default<Char>(out, arg);
}
};
template <typename Char, typename T, int N>
struct is_compiled_format<field<Char, T, N>> : std::true_type {};
template <typename L, typename R> struct concat {
L lhs;
R rhs;
using char_type = typename L::char_type;
template <typename OutputIt, typename... Args>
OutputIt format(OutputIt out, const Args&... args) const {
out = lhs.format(out, args...);
return rhs.format(out, args...);
}
};
template <typename L, typename R>
struct is_compiled_format<concat<L, R>> : std::true_type {};
template <typename L, typename R>
constexpr concat<L, R> make_concat(L lhs, R rhs) {
return {lhs, rhs};
}
struct unknown_format {};
template <typename Char>
constexpr size_t parse_text(basic_string_view<Char> str, size_t pos) {
for (size_t size = str.size(); pos != size; ++pos) {
if (str[pos] == '{' || str[pos] == '}') break;
}
return pos;
}
template <typename Args, size_t POS, int ID, typename S>
constexpr auto compile_format_string(S format_str);
template <typename Args, size_t POS, int ID, typename T, typename S>
constexpr auto parse_tail(T head, S format_str) {
if constexpr (POS != to_string_view(format_str).size()) {
constexpr auto tail = compile_format_string<Args, POS, ID>(format_str);
if constexpr (std::is_same<remove_cvref_t<decltype(tail)>,
unknown_format>())
return tail;
else
return make_concat(head, tail);
} else {
return head;
}
}
// Compiles a non-empty format string and returns the compiled representation
// or unknown_format() on unrecognized input.
template <typename Args, size_t POS, int ID, typename S>
constexpr auto compile_format_string(S format_str) {
using char_type = typename S::char_type;
constexpr basic_string_view<char_type> str = format_str;
if constexpr (str[POS] == '{') {
if (POS + 1 == str.size())
throw format_error("unmatched '{' in format string");
if constexpr (str[POS + 1] == '{') {
return parse_tail<Args, POS + 2, ID>(make_text(str, POS, 1), format_str);
} else if constexpr (str[POS + 1] == '}') {
using type = get_type<ID, Args>;
if constexpr (std::is_same<type, int>::value) {
return parse_tail<Args, POS + 2, ID + 1>(field<char_type, type, ID>(),
format_str);
} else {
return unknown_format();
}
} else {
return unknown_format();
}
} else if constexpr (str[POS] == '}') {
if (POS + 1 == str.size())
throw format_error("unmatched '}' in format string");
return parse_tail<Args, POS + 2, ID>(make_text(str, POS, 1), format_str);
} else {
constexpr auto end = parse_text(str, POS + 1);
return parse_tail<Args, end, ID>(make_text(str, POS, end - POS),
format_str);
}
}
#endif // __cpp_if_constexpr
} // namespace internal
#if FMT_USE_CONSTEXPR
# ifdef __cpp_if_constexpr
template <typename... Args, typename S,
FMT_ENABLE_IF(is_compile_string<S>::value)>
constexpr auto compile(S format_str) {
constexpr basic_string_view<typename S::char_type> str = format_str;
if constexpr (str.size() == 0) {
return internal::make_text(str, 0, 0);
} else {
constexpr auto result =
internal::compile_format_string<internal::type_list<Args...>, 0, 0>(
format_str);
if constexpr (std::is_same<remove_cvref_t<decltype(result)>,
internal::unknown_format>()) {
return internal::compiled_format<S, Args...>(to_string_view(format_str));
} else {
return result;
}
}
}
template <typename CompiledFormat, typename... Args,
typename Char = typename CompiledFormat::char_type,
FMT_ENABLE_IF(internal::is_compiled_format<CompiledFormat>::value)>
std::basic_string<Char> format(const CompiledFormat& cf, const Args&... args) {
basic_memory_buffer<Char> buffer;
cf.format(std::back_inserter(buffer), args...);
return to_string(buffer);
}
template <typename OutputIt, typename CompiledFormat, typename... Args,
FMT_ENABLE_IF(internal::is_compiled_format<CompiledFormat>::value)>
OutputIt format_to(OutputIt out, const CompiledFormat& cf,
const Args&... args) {
return cf.format(out, args...);
}
# else
template <typename... Args, typename S,
FMT_ENABLE_IF(is_compile_string<S>::value)>
constexpr auto compile(S format_str) -> internal::compiled_format<S, Args...> {
return internal::compiled_format<S, Args...>(to_string_view(format_str));
}
# endif // __cpp_if_constexpr
#endif // FMT_USE_CONSTEXPR
// Compiles the format string which must be a string literal.
template <typename... Args, typename Char, size_t N>
auto compile(const Char (&format_str)[N])
-> internal::compiled_format<const Char*, Args...> {
return internal::compiled_format<const Char*, Args...>(
basic_string_view<Char>(format_str, N - 1));
}
template <typename CompiledFormat, typename... Args,
typename Char = typename CompiledFormat::char_type,
FMT_ENABLE_IF(std::is_base_of<internal::basic_compiled_format,
CompiledFormat>::value)>
std::basic_string<Char> format(const CompiledFormat& cf, const Args&... args) {
basic_memory_buffer<Char> buffer;
using range = buffer_range<Char>;
using context = buffer_context<Char>;
internal::cf::vformat_to<context>(range(buffer), cf,
make_format_args<context>(args...));
return to_string(buffer);
}
template <typename OutputIt, typename CompiledFormat, typename... Args,
FMT_ENABLE_IF(std::is_base_of<internal::basic_compiled_format,
CompiledFormat>::value)>
OutputIt format_to(OutputIt out, const CompiledFormat& cf,
const Args&... args) {
using char_type = typename CompiledFormat::char_type;
using range = internal::output_range<OutputIt, char_type>;
using context = format_context_t<OutputIt, char_type>;
return internal::cf::vformat_to<context>(range(out), cf,
make_format_args<context>(args...));
}
template <typename OutputIt, typename CompiledFormat, typename... Args,
FMT_ENABLE_IF(internal::is_output_iterator<OutputIt>::value)>
format_to_n_result<OutputIt> format_to_n(OutputIt out, size_t n,
const CompiledFormat& cf,
const Args&... args) {
auto it =
format_to(internal::truncating_iterator<OutputIt>(out, n), cf, args...);
return {it.base(), it.count()};
}
template <typename CompiledFormat, typename... Args>
std::size_t formatted_size(const CompiledFormat& cf, const Args&... args) {
return format_to(internal::counting_iterator(), cf, args...).count();
}
FMT_END_NAMESPACE
#endif // FMT_COMPILE_H_

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@ -8,65 +8,66 @@
#ifndef FMT_LOCALE_H_
#define FMT_LOCALE_H_
#include "format.h"
#include <locale>
#include "format.h"
FMT_BEGIN_NAMESPACE
namespace internal {
template <typename Char>
typename buffer_context<Char>::type::iterator vformat_to(
const std::locale &loc, basic_buffer<Char> &buf,
typename buffer_context<Char>::iterator vformat_to(
const std::locale& loc, buffer<Char>& buf,
basic_string_view<Char> format_str,
basic_format_args<typename buffer_context<Char>::type> args) {
typedef back_insert_range<basic_buffer<Char> > range;
return vformat_to<arg_formatter<range>>(
buf, to_string_view(format_str), args, internal::locale_ref(loc));
basic_format_args<buffer_context<type_identity_t<Char>>> args) {
using range = buffer_range<Char>;
return vformat_to<arg_formatter<range>>(buf, to_string_view(format_str), args,
internal::locale_ref(loc));
}
template <typename Char>
std::basic_string<Char> vformat(
const std::locale &loc, basic_string_view<Char> format_str,
basic_format_args<typename buffer_context<Char>::type> args) {
const std::locale& loc, basic_string_view<Char> format_str,
basic_format_args<buffer_context<type_identity_t<Char>>> args) {
basic_memory_buffer<Char> buffer;
internal::vformat_to(loc, buffer, format_str, args);
return fmt::to_string(buffer);
}
}
} // namespace internal
template <typename S, typename Char = FMT_CHAR(S)>
template <typename S, typename Char = char_t<S>>
inline std::basic_string<Char> vformat(
const std::locale &loc, const S &format_str,
basic_format_args<typename buffer_context<Char>::type> args) {
const std::locale& loc, const S& format_str,
basic_format_args<buffer_context<type_identity_t<Char>>> args) {
return internal::vformat(loc, to_string_view(format_str), args);
}
template <typename S, typename... Args>
inline std::basic_string<FMT_CHAR(S)> format(
const std::locale &loc, const S &format_str, const Args &... args) {
template <typename S, typename... Args, typename Char = char_t<S>>
inline std::basic_string<Char> format(const std::locale& loc,
const S& format_str, Args&&... args) {
return internal::vformat(
loc, to_string_view(format_str),
*internal::checked_args<S, Args...>(format_str, args...));
internal::make_args_checked<Args...>(format_str, args...));
}
template <typename String, typename OutputIt, typename... Args>
inline typename std::enable_if<internal::is_output_iterator<OutputIt>::value,
OutputIt>::type
vformat_to(OutputIt out, const std::locale &loc, const String &format_str,
typename format_args_t<OutputIt, FMT_CHAR(String)>::type args) {
typedef output_range<OutputIt, FMT_CHAR(String)> range;
template <typename S, typename OutputIt, typename... Args,
typename Char = enable_if_t<
internal::is_output_iterator<OutputIt>::value, char_t<S>>>
inline OutputIt vformat_to(
OutputIt out, const std::locale& loc, const S& format_str,
format_args_t<type_identity_t<OutputIt>, Char> args) {
using range = internal::output_range<OutputIt, Char>;
return vformat_to<arg_formatter<range>>(
range(out), to_string_view(format_str), args, internal::locale_ref(loc));
}
template <typename OutputIt, typename S, typename... Args>
inline typename std::enable_if<
internal::is_string<S>::value &&
internal::is_output_iterator<OutputIt>::value, OutputIt>::type
format_to(OutputIt out, const std::locale &loc, const S &format_str,
const Args &... args) {
template <typename OutputIt, typename S, typename... Args,
FMT_ENABLE_IF(internal::is_output_iterator<OutputIt>::value&&
internal::is_string<S>::value)>
inline OutputIt format_to(OutputIt out, const std::locale& loc,
const S& format_str, Args&&... args) {
internal::check_format_string<Args...>(format_str);
typedef typename format_context_t<OutputIt, FMT_CHAR(S)>::type context;
using context = format_context_t<OutputIt, char_t<S>>;
format_arg_store<context, Args...> as{args...};
return vformat_to(out, loc, to_string_view(format_str),
basic_format_args<context>(as));

392
include/fmt/os.h Normal file
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@ -0,0 +1,392 @@
// Formatting library for C++ - optional OS-specific functionality
//
// Copyright (c) 2012 - present, Victor Zverovich
// All rights reserved.
//
// For the license information refer to format.h.
#ifndef FMT_OS_H_
#define FMT_OS_H_
#if defined(__MINGW32__) || defined(__CYGWIN__)
// Workaround MinGW bug https://sourceforge.net/p/mingw/bugs/2024/.
# undef __STRICT_ANSI__
#endif
#include <cerrno>
#include <clocale> // for locale_t
#include <cstddef>
#include <cstdio>
#include <cstdlib> // for strtod_l
#if defined __APPLE__ || defined(__FreeBSD__)
# include <xlocale.h> // for LC_NUMERIC_MASK on OS X
#endif
#include "format.h"
// UWP doesn't provide _pipe.
#if FMT_HAS_INCLUDE("winapifamily.h")
# include <winapifamily.h>
#endif
#if FMT_HAS_INCLUDE("fcntl.h") && \
(!defined(WINAPI_FAMILY) || (WINAPI_FAMILY == WINAPI_FAMILY_DESKTOP_APP))
# include <fcntl.h> // for O_RDONLY
# define FMT_USE_FCNTL 1
#else
# define FMT_USE_FCNTL 0
#endif
#ifndef FMT_POSIX
# if defined(_WIN32) && !defined(__MINGW32__)
// Fix warnings about deprecated symbols.
# define FMT_POSIX(call) _##call
# else
# define FMT_POSIX(call) call
# endif
#endif
// Calls to system functions are wrapped in FMT_SYSTEM for testability.
#ifdef FMT_SYSTEM
# define FMT_POSIX_CALL(call) FMT_SYSTEM(call)
#else
# define FMT_SYSTEM(call) call
# ifdef _WIN32
// Fix warnings about deprecated symbols.
# define FMT_POSIX_CALL(call) ::_##call
# else
# define FMT_POSIX_CALL(call) ::call
# endif
#endif
// Retries the expression while it evaluates to error_result and errno
// equals to EINTR.
#ifndef _WIN32
# define FMT_RETRY_VAL(result, expression, error_result) \
do { \
(result) = (expression); \
} while ((result) == (error_result) && errno == EINTR)
#else
# define FMT_RETRY_VAL(result, expression, error_result) result = (expression)
#endif
#define FMT_RETRY(result, expression) FMT_RETRY_VAL(result, expression, -1)
FMT_BEGIN_NAMESPACE
/**
\rst
A reference to a null-terminated string. It can be constructed from a C
string or ``std::string``.
You can use one of the following type aliases for common character types:
+---------------+-----------------------------+
| Type | Definition |
+===============+=============================+
| cstring_view | basic_cstring_view<char> |
+---------------+-----------------------------+
| wcstring_view | basic_cstring_view<wchar_t> |
+---------------+-----------------------------+
This class is most useful as a parameter type to allow passing
different types of strings to a function, for example::
template <typename... Args>
std::string format(cstring_view format_str, const Args & ... args);
format("{}", 42);
format(std::string("{}"), 42);
\endrst
*/
template <typename Char> class basic_cstring_view {
private:
const Char* data_;
public:
/** Constructs a string reference object from a C string. */
basic_cstring_view(const Char* s) : data_(s) {}
/**
\rst
Constructs a string reference from an ``std::string`` object.
\endrst
*/
basic_cstring_view(const std::basic_string<Char>& s) : data_(s.c_str()) {}
/** Returns the pointer to a C string. */
const Char* c_str() const { return data_; }
};
using cstring_view = basic_cstring_view<char>;
using wcstring_view = basic_cstring_view<wchar_t>;
// An error code.
class error_code {
private:
int value_;
public:
explicit error_code(int value = 0) FMT_NOEXCEPT : value_(value) {}
int get() const FMT_NOEXCEPT { return value_; }
};
#ifdef _WIN32
namespace internal {
// A converter from UTF-16 to UTF-8.
// It is only provided for Windows since other systems support UTF-8 natively.
class utf16_to_utf8 {
private:
memory_buffer buffer_;
public:
utf16_to_utf8() {}
FMT_API explicit utf16_to_utf8(wstring_view s);
operator string_view() const { return string_view(&buffer_[0], size()); }
size_t size() const { return buffer_.size() - 1; }
const char* c_str() const { return &buffer_[0]; }
std::string str() const { return std::string(&buffer_[0], size()); }
// Performs conversion returning a system error code instead of
// throwing exception on conversion error. This method may still throw
// in case of memory allocation error.
FMT_API int convert(wstring_view s);
};
FMT_API void format_windows_error(buffer<char>& out, int error_code,
string_view message) FMT_NOEXCEPT;
} // namespace internal
/** A Windows error. */
class windows_error : public system_error {
private:
FMT_API void init(int error_code, string_view format_str, format_args args);
public:
/**
\rst
Constructs a :class:`fmt::windows_error` object with the description
of the form
.. parsed-literal::
*<message>*: *<system-message>*
where *<message>* is the formatted message and *<system-message>* is the
system message corresponding to the error code.
*error_code* is a Windows error code as given by ``GetLastError``.
If *error_code* is not a valid error code such as -1, the system message
will look like "error -1".
**Example**::
// This throws a windows_error with the description
// cannot open file 'madeup': The system cannot find the file specified.
// or similar (system message may vary).
const char *filename = "madeup";
LPOFSTRUCT of = LPOFSTRUCT();
HFILE file = OpenFile(filename, &of, OF_READ);
if (file == HFILE_ERROR) {
throw fmt::windows_error(GetLastError(),
"cannot open file '{}'", filename);
}
\endrst
*/
template <typename... Args>
windows_error(int error_code, string_view message, const Args&... args) {
init(error_code, message, make_format_args(args...));
}
};
// Reports a Windows error without throwing an exception.
// Can be used to report errors from destructors.
FMT_API void report_windows_error(int error_code,
string_view message) FMT_NOEXCEPT;
#endif // _WIN32
// A buffered file.
class buffered_file {
private:
FILE* file_;
friend class file;
explicit buffered_file(FILE* f) : file_(f) {}
public:
buffered_file(const buffered_file&) = delete;
void operator=(const buffered_file&) = delete;
// Constructs a buffered_file object which doesn't represent any file.
buffered_file() FMT_NOEXCEPT : file_(nullptr) {}
// Destroys the object closing the file it represents if any.
FMT_API ~buffered_file() FMT_NOEXCEPT;
public:
buffered_file(buffered_file&& other) FMT_NOEXCEPT : file_(other.file_) {
other.file_ = nullptr;
}
buffered_file& operator=(buffered_file&& other) {
close();
file_ = other.file_;
other.file_ = nullptr;
return *this;
}
// Opens a file.
FMT_API buffered_file(cstring_view filename, cstring_view mode);
// Closes the file.
FMT_API void close();
// Returns the pointer to a FILE object representing this file.
FILE* get() const FMT_NOEXCEPT { return file_; }
// We place parentheses around fileno to workaround a bug in some versions
// of MinGW that define fileno as a macro.
FMT_API int(fileno)() const;
void vprint(string_view format_str, format_args args) {
fmt::vprint(file_, format_str, args);
}
template <typename... Args>
inline void print(string_view format_str, const Args&... args) {
vprint(format_str, make_format_args(args...));
}
};
#if FMT_USE_FCNTL
// A file. Closed file is represented by a file object with descriptor -1.
// Methods that are not declared with FMT_NOEXCEPT may throw
// fmt::system_error in case of failure. Note that some errors such as
// closing the file multiple times will cause a crash on Windows rather
// than an exception. You can get standard behavior by overriding the
// invalid parameter handler with _set_invalid_parameter_handler.
class file {
private:
int fd_; // File descriptor.
// Constructs a file object with a given descriptor.
explicit file(int fd) : fd_(fd) {}
public:
// Possible values for the oflag argument to the constructor.
enum {
RDONLY = FMT_POSIX(O_RDONLY), // Open for reading only.
WRONLY = FMT_POSIX(O_WRONLY), // Open for writing only.
RDWR = FMT_POSIX(O_RDWR) // Open for reading and writing.
};
// Constructs a file object which doesn't represent any file.
file() FMT_NOEXCEPT : fd_(-1) {}
// Opens a file and constructs a file object representing this file.
FMT_API file(cstring_view path, int oflag);
public:
file(const file&) = delete;
void operator=(const file&) = delete;
file(file&& other) FMT_NOEXCEPT : fd_(other.fd_) { other.fd_ = -1; }
file& operator=(file&& other) FMT_NOEXCEPT {
close();
fd_ = other.fd_;
other.fd_ = -1;
return *this;
}
// Destroys the object closing the file it represents if any.
FMT_API ~file() FMT_NOEXCEPT;
// Returns the file descriptor.
int descriptor() const FMT_NOEXCEPT { return fd_; }
// Closes the file.
FMT_API void close();
// Returns the file size. The size has signed type for consistency with
// stat::st_size.
FMT_API long long size() const;
// Attempts to read count bytes from the file into the specified buffer.
FMT_API std::size_t read(void* buffer, std::size_t count);
// Attempts to write count bytes from the specified buffer to the file.
FMT_API std::size_t write(const void* buffer, std::size_t count);
// Duplicates a file descriptor with the dup function and returns
// the duplicate as a file object.
FMT_API static file dup(int fd);
// Makes fd be the copy of this file descriptor, closing fd first if
// necessary.
FMT_API void dup2(int fd);
// Makes fd be the copy of this file descriptor, closing fd first if
// necessary.
FMT_API void dup2(int fd, error_code& ec) FMT_NOEXCEPT;
// Creates a pipe setting up read_end and write_end file objects for reading
// and writing respectively.
FMT_API static void pipe(file& read_end, file& write_end);
// Creates a buffered_file object associated with this file and detaches
// this file object from the file.
FMT_API buffered_file fdopen(const char* mode);
};
// Returns the memory page size.
long getpagesize();
#endif // FMT_USE_FCNTL
#ifdef FMT_LOCALE
// A "C" numeric locale.
class locale {
private:
# ifdef _WIN32
using locale_t = _locale_t;
static void freelocale(locale_t loc) { _free_locale(loc); }
static double strtod_l(const char* nptr, char** endptr, _locale_t loc) {
return _strtod_l(nptr, endptr, loc);
}
# endif
locale_t locale_;
public:
using type = locale_t;
locale(const locale&) = delete;
void operator=(const locale&) = delete;
locale() {
# ifndef _WIN32
locale_ = FMT_SYSTEM(newlocale(LC_NUMERIC_MASK, "C", nullptr));
# else
locale_ = _create_locale(LC_NUMERIC, "C");
# endif
if (!locale_) FMT_THROW(system_error(errno, "cannot create locale"));
}
~locale() { freelocale(locale_); }
type get() const { return locale_; }
// Converts string to floating-point number and advances str past the end
// of the parsed input.
double strtod(const char*& str) const {
char* end = nullptr;
double result = strtod_l(str, &end, locale_);
str = end;
return result;
}
};
using Locale FMT_DEPRECATED_ALIAS = locale;
#endif // FMT_LOCALE
FMT_END_NAMESPACE
#endif // FMT_OS_H_

View file

@ -8,22 +8,21 @@
#ifndef FMT_OSTREAM_H_
#define FMT_OSTREAM_H_
#include "format.h"
#include <ostream>
#include "format.h"
FMT_BEGIN_NAMESPACE
namespace internal {
template <class Char>
class formatbuf : public std::basic_streambuf<Char> {
template <class Char> class formatbuf : public std::basic_streambuf<Char> {
private:
typedef typename std::basic_streambuf<Char>::int_type int_type;
typedef typename std::basic_streambuf<Char>::traits_type traits_type;
using int_type = typename std::basic_streambuf<Char>::int_type;
using traits_type = typename std::basic_streambuf<Char>::traits_type;
basic_buffer<Char> &buffer_;
buffer<Char>& buffer_;
public:
formatbuf(basic_buffer<Char> &buffer) : buffer_(buffer) {}
formatbuf(buffer<Char>& buf) : buffer_(buf) {}
protected:
// The put-area is actually always empty. This makes the implementation
@ -39,33 +38,36 @@ class formatbuf : public std::basic_streambuf<Char> {
return ch;
}
std::streamsize xsputn(const Char *s, std::streamsize count) FMT_OVERRIDE {
std::streamsize xsputn(const Char* s, std::streamsize count) FMT_OVERRIDE {
buffer_.append(s, s + count);
return count;
}
};
template <typename Char>
struct test_stream : std::basic_ostream<Char> {
template <typename Char> struct test_stream : std::basic_ostream<Char> {
private:
struct null;
// Hide all operator<< from std::basic_ostream<Char>.
void operator<<(null);
void_t<> operator<<(null<>);
void_t<> operator<<(const Char*);
template <typename T, FMT_ENABLE_IF(std::is_convertible<T, int>::value &&
!std::is_enum<T>::value)>
void_t<> operator<<(T);
};
// Checks if T has a user-defined operator<< (e.g. not a member of std::ostream).
template <typename T, typename Char>
class is_streamable {
// Checks if T has a user-defined operator<< (e.g. not a member of
// std::ostream).
template <typename T, typename Char> class is_streamable {
private:
template <typename U>
static decltype(
internal::declval<test_stream<Char>&>()
<< internal::declval<U>(), std::true_type()) test(int);
static bool_constant<!std::is_same<decltype(std::declval<test_stream<Char>&>()
<< std::declval<U>()),
void_t<>>::value>
test(int);
template <typename>
static std::false_type test(...);
template <typename> static std::false_type test(...);
typedef decltype(test<T>(0)) result;
using result = decltype(test<T>(0));
public:
static const bool value = result::value;
@ -73,65 +75,54 @@ class is_streamable {
// Write the content of buf to os.
template <typename Char>
void write(std::basic_ostream<Char> &os, basic_buffer<Char> &buf) {
const Char *data = buf.data();
typedef std::make_unsigned<std::streamsize>::type UnsignedStreamSize;
UnsignedStreamSize size = buf.size();
UnsignedStreamSize max_size =
internal::to_unsigned((std::numeric_limits<std::streamsize>::max)());
void write(std::basic_ostream<Char>& os, buffer<Char>& buf) {
const Char* buf_data = buf.data();
using unsigned_streamsize = std::make_unsigned<std::streamsize>::type;
unsigned_streamsize size = buf.size();
unsigned_streamsize max_size = to_unsigned(max_value<std::streamsize>());
do {
UnsignedStreamSize n = size <= max_size ? size : max_size;
os.write(data, static_cast<std::streamsize>(n));
data += n;
unsigned_streamsize n = size <= max_size ? size : max_size;
os.write(buf_data, static_cast<std::streamsize>(n));
buf_data += n;
size -= n;
} while (size != 0);
}
template <typename Char, typename T>
void format_value(basic_buffer<Char> &buffer, const T &value) {
internal::formatbuf<Char> format_buf(buffer);
void format_value(buffer<Char>& buf, const T& value,
locale_ref loc = locale_ref()) {
formatbuf<Char> format_buf(buf);
std::basic_ostream<Char> output(&format_buf);
#if !defined(FMT_STATIC_THOUSANDS_SEPARATOR)
if (loc) output.imbue(loc.get<std::locale>());
#endif
output.exceptions(std::ios_base::failbit | std::ios_base::badbit);
output << value;
buffer.resize(buffer.size());
buf.resize(buf.size());
}
} // namespace internal
// Disable conversion to int if T has an overloaded operator<< which is a free
// function (not a member of std::ostream).
template <typename T, typename Char>
struct convert_to_int<T, Char, void> {
static const bool value =
convert_to_int<T, Char, int>::value &&
!internal::is_streamable<T, Char>::value;
};
// Formats an object of type T that has an overloaded ostream operator<<.
template <typename T, typename Char>
struct formatter<T, Char,
typename std::enable_if<
internal::is_streamable<T, Char>::value &&
!internal::format_type<
typename buffer_context<Char>::type, T>::value>::type>
struct fallback_formatter<T, Char, enable_if_t<is_streamable<T, Char>::value>>
: formatter<basic_string_view<Char>, Char> {
template <typename Context>
auto format(const T &value, Context &ctx) -> decltype(ctx.out()) {
auto format(const T& value, Context& ctx) -> decltype(ctx.out()) {
basic_memory_buffer<Char> buffer;
internal::format_value(buffer, value);
format_value(buffer, value, ctx.locale());
basic_string_view<Char> str(buffer.data(), buffer.size());
return formatter<basic_string_view<Char>, Char>::format(str, ctx);
}
};
} // namespace internal
template <typename Char>
inline void vprint(std::basic_ostream<Char> &os,
basic_string_view<Char> format_str,
basic_format_args<typename buffer_context<Char>::type> args) {
void vprint(std::basic_ostream<Char>& os, basic_string_view<Char> format_str,
basic_format_args<buffer_context<type_identity_t<Char>>> args) {
basic_memory_buffer<Char> buffer;
internal::vformat_to(buffer, format_str, args);
internal::write(os, buffer);
}
/**
\rst
Prints formatted data to the stream *os*.
@ -141,12 +132,11 @@ inline void vprint(std::basic_ostream<Char> &os,
fmt::print(cerr, "Don't {}!", "panic");
\endrst
*/
template <typename S, typename... Args>
inline typename std::enable_if<internal::is_string<S>::value>::type
print(std::basic_ostream<FMT_CHAR(S)> &os, const S &format_str,
const Args & ... args) {
internal::checked_args<S, Args...> ca(format_str, args...);
vprint(os, to_string_view(format_str), *ca);
template <typename S, typename... Args,
typename Char = enable_if_t<internal::is_string<S>::value, char_t<S>>>
void print(std::basic_ostream<Char>& os, const S& format_str, Args&&... args) {
vprint(os, to_string_view(format_str),
internal::make_args_checked<Args...>(format_str, args...));
}
FMT_END_NAMESPACE

View file

@ -1,324 +1,2 @@
// A C++ interface to POSIX functions.
//
// Copyright (c) 2012 - 2016, Victor Zverovich
// All rights reserved.
//
// For the license information refer to format.h.
#ifndef FMT_POSIX_H_
#define FMT_POSIX_H_
#if defined(__MINGW32__) || defined(__CYGWIN__)
// Workaround MinGW bug https://sourceforge.net/p/mingw/bugs/2024/.
# undef __STRICT_ANSI__
#endif
#include <errno.h>
#include <fcntl.h> // for O_RDONLY
#include <locale.h> // for locale_t
#include <stdio.h>
#include <stdlib.h> // for strtod_l
#include <cstddef>
#if defined __APPLE__ || defined(__FreeBSD__)
# include <xlocale.h> // for LC_NUMERIC_MASK on OS X
#endif
#include "format.h"
#ifndef FMT_POSIX
# if defined(_WIN32) && !defined(__MINGW32__)
// Fix warnings about deprecated symbols.
# define FMT_POSIX(call) _##call
# else
# define FMT_POSIX(call) call
# endif
#endif
// Calls to system functions are wrapped in FMT_SYSTEM for testability.
#ifdef FMT_SYSTEM
# define FMT_POSIX_CALL(call) FMT_SYSTEM(call)
#else
# define FMT_SYSTEM(call) call
# ifdef _WIN32
// Fix warnings about deprecated symbols.
# define FMT_POSIX_CALL(call) ::_##call
# else
# define FMT_POSIX_CALL(call) ::call
# endif
#endif
// Retries the expression while it evaluates to error_result and errno
// equals to EINTR.
#ifndef _WIN32
# define FMT_RETRY_VAL(result, expression, error_result) \
do { \
result = (expression); \
} while (result == error_result && errno == EINTR)
#else
# define FMT_RETRY_VAL(result, expression, error_result) result = (expression)
#endif
#define FMT_RETRY(result, expression) FMT_RETRY_VAL(result, expression, -1)
FMT_BEGIN_NAMESPACE
/**
\rst
A reference to a null-terminated string. It can be constructed from a C
string or ``std::string``.
You can use one of the following typedefs for common character types:
+---------------+-----------------------------+
| Type | Definition |
+===============+=============================+
| cstring_view | basic_cstring_view<char> |
+---------------+-----------------------------+
| wcstring_view | basic_cstring_view<wchar_t> |
+---------------+-----------------------------+
This class is most useful as a parameter type to allow passing
different types of strings to a function, for example::
template <typename... Args>
std::string format(cstring_view format_str, const Args & ... args);
format("{}", 42);
format(std::string("{}"), 42);
\endrst
*/
template <typename Char>
class basic_cstring_view {
private:
const Char *data_;
public:
/** Constructs a string reference object from a C string. */
basic_cstring_view(const Char *s) : data_(s) {}
/**
\rst
Constructs a string reference from an ``std::string`` object.
\endrst
*/
basic_cstring_view(const std::basic_string<Char> &s) : data_(s.c_str()) {}
/** Returns the pointer to a C string. */
const Char *c_str() const { return data_; }
};
typedef basic_cstring_view<char> cstring_view;
typedef basic_cstring_view<wchar_t> wcstring_view;
// An error code.
class error_code {
private:
int value_;
public:
explicit error_code(int value = 0) FMT_NOEXCEPT : value_(value) {}
int get() const FMT_NOEXCEPT { return value_; }
};
// A buffered file.
class buffered_file {
private:
FILE *file_;
friend class file;
explicit buffered_file(FILE *f) : file_(f) {}
public:
// Constructs a buffered_file object which doesn't represent any file.
buffered_file() FMT_NOEXCEPT : file_(FMT_NULL) {}
// Destroys the object closing the file it represents if any.
FMT_API ~buffered_file() FMT_NOEXCEPT;
private:
buffered_file(const buffered_file &) = delete;
void operator=(const buffered_file &) = delete;
public:
buffered_file(buffered_file &&other) FMT_NOEXCEPT : file_(other.file_) {
other.file_ = FMT_NULL;
}
buffered_file& operator=(buffered_file &&other) {
close();
file_ = other.file_;
other.file_ = FMT_NULL;
return *this;
}
// Opens a file.
FMT_API buffered_file(cstring_view filename, cstring_view mode);
// Closes the file.
FMT_API void close();
// Returns the pointer to a FILE object representing this file.
FILE *get() const FMT_NOEXCEPT { return file_; }
// We place parentheses around fileno to workaround a bug in some versions
// of MinGW that define fileno as a macro.
FMT_API int (fileno)() const;
void vprint(string_view format_str, format_args args) {
fmt::vprint(file_, format_str, args);
}
template <typename... Args>
inline void print(string_view format_str, const Args & ... args) {
vprint(format_str, make_format_args(args...));
}
};
// A file. Closed file is represented by a file object with descriptor -1.
// Methods that are not declared with FMT_NOEXCEPT may throw
// fmt::system_error in case of failure. Note that some errors such as
// closing the file multiple times will cause a crash on Windows rather
// than an exception. You can get standard behavior by overriding the
// invalid parameter handler with _set_invalid_parameter_handler.
class file {
private:
int fd_; // File descriptor.
// Constructs a file object with a given descriptor.
explicit file(int fd) : fd_(fd) {}
public:
// Possible values for the oflag argument to the constructor.
enum {
RDONLY = FMT_POSIX(O_RDONLY), // Open for reading only.
WRONLY = FMT_POSIX(O_WRONLY), // Open for writing only.
RDWR = FMT_POSIX(O_RDWR) // Open for reading and writing.
};
// Constructs a file object which doesn't represent any file.
file() FMT_NOEXCEPT : fd_(-1) {}
// Opens a file and constructs a file object representing this file.
FMT_API file(cstring_view path, int oflag);
private:
file(const file &) = delete;
void operator=(const file &) = delete;
public:
file(file &&other) FMT_NOEXCEPT : fd_(other.fd_) {
other.fd_ = -1;
}
file& operator=(file &&other) {
close();
fd_ = other.fd_;
other.fd_ = -1;
return *this;
}
// Destroys the object closing the file it represents if any.
FMT_API ~file() FMT_NOEXCEPT;
// Returns the file descriptor.
int descriptor() const FMT_NOEXCEPT { return fd_; }
// Closes the file.
FMT_API void close();
// Returns the file size. The size has signed type for consistency with
// stat::st_size.
FMT_API long long size() const;
// Attempts to read count bytes from the file into the specified buffer.
FMT_API std::size_t read(void *buffer, std::size_t count);
// Attempts to write count bytes from the specified buffer to the file.
FMT_API std::size_t write(const void *buffer, std::size_t count);
// Duplicates a file descriptor with the dup function and returns
// the duplicate as a file object.
FMT_API static file dup(int fd);
// Makes fd be the copy of this file descriptor, closing fd first if
// necessary.
FMT_API void dup2(int fd);
// Makes fd be the copy of this file descriptor, closing fd first if
// necessary.
FMT_API void dup2(int fd, error_code &ec) FMT_NOEXCEPT;
// Creates a pipe setting up read_end and write_end file objects for reading
// and writing respectively.
FMT_API static void pipe(file &read_end, file &write_end);
// Creates a buffered_file object associated with this file and detaches
// this file object from the file.
FMT_API buffered_file fdopen(const char *mode);
};
// Returns the memory page size.
long getpagesize();
#if (defined(LC_NUMERIC_MASK) || defined(_MSC_VER)) && \
!defined(__ANDROID__) && !defined(__CYGWIN__) && !defined(__OpenBSD__) && \
!defined(__NEWLIB_H__)
# define FMT_LOCALE
#endif
#ifdef FMT_LOCALE
// A "C" numeric locale.
class Locale {
private:
# ifdef _MSC_VER
typedef _locale_t locale_t;
enum { LC_NUMERIC_MASK = LC_NUMERIC };
static locale_t newlocale(int category_mask, const char *locale, locale_t) {
return _create_locale(category_mask, locale);
}
static void freelocale(locale_t locale) {
_free_locale(locale);
}
static double strtod_l(const char *nptr, char **endptr, _locale_t locale) {
return _strtod_l(nptr, endptr, locale);
}
# endif
locale_t locale_;
Locale(const Locale &) = delete;
void operator=(const Locale &) = delete;
public:
typedef locale_t Type;
Locale() : locale_(newlocale(LC_NUMERIC_MASK, "C", FMT_NULL)) {
if (!locale_)
FMT_THROW(system_error(errno, "cannot create locale"));
}
~Locale() { freelocale(locale_); }
Type get() const { return locale_; }
// Converts string to floating-point number and advances str past the end
// of the parsed input.
double strtod(const char *&str) const {
char *end = FMT_NULL;
double result = strtod_l(str, &end, locale_);
str = end;
return result;
}
};
#endif // FMT_LOCALE
FMT_END_NAMESPACE
#endif // FMT_POSIX_H_
#include "os.h"
#warning "fmt/posix.h is deprecated; use fmt/os.h instead"

File diff suppressed because it is too large Load diff

View file

@ -1,4 +1,4 @@
// Formatting library for C++ - the core API
// Formatting library for C++ - experimental range support
//
// Copyright (c) 2012 - present, Victor Zverovich
// All rights reserved.
@ -12,9 +12,11 @@
#ifndef FMT_RANGES_H_
#define FMT_RANGES_H_
#include "format.h"
#include <initializer_list>
#include <type_traits>
#include "format.h"
// output only up to N items from the range.
#ifndef FMT_RANGE_OUTPUT_LENGTH_LIMIT
# define FMT_RANGE_OUTPUT_LENGTH_LIMIT 256
@ -22,10 +24,9 @@
FMT_BEGIN_NAMESPACE
template <typename Char>
struct formatting_base {
template <typename Char> struct formatting_base {
template <typename ParseContext>
FMT_CONSTEXPR auto parse(ParseContext &ctx) -> decltype(ctx.begin()) {
FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) {
return ctx.begin();
}
};
@ -33,7 +34,8 @@ struct formatting_base {
template <typename Char, typename Enable = void>
struct formatting_range : formatting_base<Char> {
static FMT_CONSTEXPR_DECL const std::size_t range_length_limit =
FMT_RANGE_OUTPUT_LENGTH_LIMIT; // output only up to N items from the range.
FMT_RANGE_OUTPUT_LENGTH_LIMIT; // output only up to N items from the
// range.
Char prefix;
Char delimiter;
Char postfix;
@ -55,87 +57,75 @@ struct formatting_tuple : formatting_base<Char> {
namespace internal {
template <typename RangeT, typename OutputIterator>
void copy(const RangeT &range, OutputIterator out) {
OutputIterator copy(const RangeT& range, OutputIterator out) {
for (auto it = range.begin(), end = range.end(); it != end; ++it)
*out++ = *it;
return out;
}
template <typename OutputIterator>
void copy(const char *str, OutputIterator out) {
const char *p_curr = str;
while (*p_curr) {
*out++ = *p_curr++;
}
OutputIterator copy(const char* str, OutputIterator out) {
while (*str) *out++ = *str++;
return out;
}
template <typename OutputIterator>
void copy(char ch, OutputIterator out) {
OutputIterator copy(char ch, OutputIterator out) {
*out++ = ch;
return out;
}
/// Return true value if T has std::string interface, like std::string_view.
template <typename T>
class is_like_std_string {
template <typename T> class is_like_std_string {
template <typename U>
static auto check(U *p) ->
decltype(p->find('a'), p->length(), p->data(), int());
template <typename>
static void check(...);
static auto check(U* p)
-> decltype((void)p->find('a'), p->length(), (void)p->data(), int());
template <typename> static void check(...);
public:
static FMT_CONSTEXPR_DECL const bool value =
!std::is_void<decltype(check<T>(FMT_NULL))>::value;
is_string<T>::value || !std::is_void<decltype(check<T>(nullptr))>::value;
};
template <typename Char>
struct is_like_std_string<fmt::basic_string_view<Char>> : std::true_type {};
template <typename... Ts>
struct conditional_helper {};
template <typename... Ts> struct conditional_helper {};
template <typename T, typename _ = void>
struct is_range_ : std::false_type {};
template <typename T, typename _ = void> struct is_range_ : std::false_type {};
#if !FMT_MSC_VER || FMT_MSC_VER > 1800
template <typename T>
struct is_range_<T, typename std::conditional<
false,
conditional_helper<decltype(internal::declval<T>().begin()),
decltype(internal::declval<T>().end())>,
void>::type> : std::true_type {};
struct is_range_<
T, conditional_t<false,
conditional_helper<decltype(std::declval<T>().begin()),
decltype(std::declval<T>().end())>,
void>> : std::true_type {};
#endif
/// tuple_size and tuple_element check.
template <typename T>
class is_tuple_like_ {
template <typename T> class is_tuple_like_ {
template <typename U>
static auto check(U *p) ->
decltype(std::tuple_size<U>::value,
internal::declval<typename std::tuple_element<0, U>::type>(), int());
template <typename>
static void check(...);
static auto check(U* p) -> decltype(std::tuple_size<U>::value, int());
template <typename> static void check(...);
public:
static FMT_CONSTEXPR_DECL const bool value =
!std::is_void<decltype(check<T>(FMT_NULL))>::value;
!std::is_void<decltype(check<T>(nullptr))>::value;
};
// Check for integer_sequence
#if defined(__cpp_lib_integer_sequence) || FMT_MSC_VER >= 1900
template <typename T, T... N>
using integer_sequence = std::integer_sequence<T, N...>;
template <std::size_t... N>
using index_sequence = std::index_sequence<N...>;
template <std::size_t... N> using index_sequence = std::index_sequence<N...>;
template <std::size_t N>
using make_index_sequence = std::make_index_sequence<N>;
#else
template <typename T, T... N>
struct integer_sequence {
typedef T value_type;
template <typename T, T... N> struct integer_sequence {
using value_type = T;
static FMT_CONSTEXPR std::size_t size() {
return sizeof...(N);
}
static FMT_CONSTEXPR std::size_t size() { return sizeof...(N); }
};
template <std::size_t... N>
@ -151,7 +141,7 @@ using make_index_sequence = make_integer_sequence<std::size_t, N>;
#endif
template <class Tuple, class F, size_t... Is>
void for_each(index_sequence<Is...>, Tuple &&tup, F &&f) FMT_NOEXCEPT {
void for_each(index_sequence<Is...>, Tuple&& tup, F&& f) FMT_NOEXCEPT {
using std::get;
// using free function get<I>(T) now.
const int _[] = {0, ((void)f(get<Is>(tup)), 0)...};
@ -159,26 +149,25 @@ void for_each(index_sequence<Is...>, Tuple &&tup, F &&f) FMT_NOEXCEPT {
}
template <class T>
FMT_CONSTEXPR make_index_sequence<std::tuple_size<T>::value>
get_indexes(T const &) { return {}; }
FMT_CONSTEXPR make_index_sequence<std::tuple_size<T>::value> get_indexes(
T const&) {
return {};
}
template <class Tuple, class F>
void for_each(Tuple &&tup, F &&f) {
template <class Tuple, class F> void for_each(Tuple&& tup, F&& f) {
const auto indexes = get_indexes(tup);
for_each(indexes, std::forward<Tuple>(tup), std::forward<F>(f));
}
template<typename Arg>
FMT_CONSTEXPR const char* format_str_quoted(bool add_space, const Arg&,
typename std::enable_if<
!is_like_std_string<typename std::decay<Arg>::type>::value>::type* = nullptr) {
template <typename Arg, FMT_ENABLE_IF(!is_like_std_string<
typename std::decay<Arg>::type>::value)>
FMT_CONSTEXPR const char* format_str_quoted(bool add_space, const Arg&) {
return add_space ? " {}" : "{}";
}
template<typename Arg>
FMT_CONSTEXPR const char* format_str_quoted(bool add_space, const Arg&,
typename std::enable_if<
is_like_std_string<typename std::decay<Arg>::type>::value>::type* = nullptr) {
template <typename Arg, FMT_ENABLE_IF(is_like_std_string<
typename std::decay<Arg>::type>::value)>
FMT_CONSTEXPR const char* format_str_quoted(bool add_space, const Arg&) {
return add_space ? " \"{}\"" : "\"{}\"";
}
@ -198,28 +187,24 @@ FMT_CONSTEXPR const wchar_t* format_str_quoted(bool add_space, const wchar_t) {
} // namespace internal
template <typename T>
struct is_tuple_like {
template <typename T> struct is_tuple_like {
static FMT_CONSTEXPR_DECL const bool value =
internal::is_tuple_like_<T>::value && !internal::is_range_<T>::value;
};
template <typename TupleT, typename Char>
struct formatter<TupleT, Char,
typename std::enable_if<fmt::is_tuple_like<TupleT>::value>::type> {
private:
struct formatter<TupleT, Char, enable_if_t<fmt::is_tuple_like<TupleT>::value>> {
private:
// C++11 generic lambda for format()
template <typename FormatContext>
struct format_each {
template <typename T>
void operator()(const T& v) {
template <typename FormatContext> struct format_each {
template <typename T> void operator()(const T& v) {
if (i > 0) {
if (formatting.add_prepostfix_space) {
*out++ = ' ';
}
internal::copy(formatting.delimiter, out);
out = internal::copy(formatting.delimiter, out);
}
format_to(out,
out = format_to(out,
internal::format_str_quoted(
(formatting.add_delimiter_spaces && i > 0), v),
v);
@ -228,19 +213,20 @@ private:
formatting_tuple<Char>& formatting;
std::size_t& i;
typename std::add_lvalue_reference<decltype(std::declval<FormatContext>().out())>::type out;
typename std::add_lvalue_reference<decltype(
std::declval<FormatContext>().out())>::type out;
};
public:
public:
formatting_tuple<Char> formatting;
template <typename ParseContext>
FMT_CONSTEXPR auto parse(ParseContext &ctx) -> decltype(ctx.begin()) {
FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) {
return formatting.parse(ctx);
}
template <typename FormatContext = format_context>
auto format(const TupleT &values, FormatContext &ctx) -> decltype(ctx.out()) {
auto format(const TupleT& values, FormatContext& ctx) -> decltype(ctx.out()) {
auto out = ctx.out();
std::size_t i = 0;
internal::copy(formatting.prefix, out);
@ -255,54 +241,147 @@ public:
}
};
template <typename T>
struct is_range {
template <typename T, typename Char> struct is_range {
static FMT_CONSTEXPR_DECL const bool value =
internal::is_range_<T>::value && !internal::is_like_std_string<T>::value;
internal::is_range_<T>::value &&
!internal::is_like_std_string<T>::value &&
!std::is_convertible<T, std::basic_string<Char>>::value &&
!std::is_constructible<internal::std_string_view<Char>, T>::value;
};
template <typename RangeT, typename Char>
struct formatter<RangeT, Char,
typename std::enable_if<fmt::is_range<RangeT>::value>::type> {
enable_if_t<fmt::is_range<RangeT, Char>::value>> {
formatting_range<Char> formatting;
template <typename ParseContext>
FMT_CONSTEXPR auto parse(ParseContext &ctx) -> decltype(ctx.begin()) {
FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) {
return formatting.parse(ctx);
}
template <typename FormatContext>
typename FormatContext::iterator format(
const RangeT &values, FormatContext &ctx) {
auto out = ctx.out();
internal::copy(formatting.prefix, out);
typename FormatContext::iterator format(const RangeT& values,
FormatContext& ctx) {
auto out = internal::copy(formatting.prefix, ctx.out());
std::size_t i = 0;
for (auto it = values.begin(), end = values.end(); it != end; ++it) {
if (i > 0) {
if (formatting.add_prepostfix_space) {
*out++ = ' ';
if (formatting.add_prepostfix_space) *out++ = ' ';
out = internal::copy(formatting.delimiter, out);
}
internal::copy(formatting.delimiter, out);
}
format_to(out,
out = format_to(out,
internal::format_str_quoted(
(formatting.add_delimiter_spaces && i > 0), *it),
*it);
if (++i > formatting.range_length_limit) {
format_to(out, " ... <other elements>");
out = format_to(out, " ... <other elements>");
break;
}
}
if (formatting.add_prepostfix_space) {
*out++ = ' ';
}
internal::copy(formatting.postfix, out);
return ctx.out();
if (formatting.add_prepostfix_space) *out++ = ' ';
return internal::copy(formatting.postfix, out);
}
};
template <typename Char, typename... T> struct tuple_arg_join : internal::view {
const std::tuple<T...>& tuple;
basic_string_view<Char> sep;
tuple_arg_join(const std::tuple<T...>& t, basic_string_view<Char> s)
: tuple{t}, sep{s} {}
};
template <typename Char, typename... T>
struct formatter<tuple_arg_join<Char, T...>, Char> {
template <typename ParseContext>
FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) {
return ctx.begin();
}
template <typename FormatContext>
typename FormatContext::iterator format(
const tuple_arg_join<Char, T...>& value, FormatContext& ctx) {
return format(value, ctx, internal::make_index_sequence<sizeof...(T)>{});
}
private:
template <typename FormatContext, size_t... N>
typename FormatContext::iterator format(
const tuple_arg_join<Char, T...>& value, FormatContext& ctx,
internal::index_sequence<N...>) {
return format_args(value, ctx, std::get<N>(value.tuple)...);
}
template <typename FormatContext>
typename FormatContext::iterator format_args(
const tuple_arg_join<Char, T...>&, FormatContext& ctx) {
// NOTE: for compilers that support C++17, this empty function instantiation
// can be replaced with a constexpr branch in the variadic overload.
return ctx.out();
}
template <typename FormatContext, typename Arg, typename... Args>
typename FormatContext::iterator format_args(
const tuple_arg_join<Char, T...>& value, FormatContext& ctx,
const Arg& arg, const Args&... args) {
using base = formatter<typename std::decay<Arg>::type, Char>;
auto out = ctx.out();
out = base{}.format(arg, ctx);
if (sizeof...(Args) > 0) {
out = std::copy(value.sep.begin(), value.sep.end(), out);
ctx.advance_to(out);
return format_args(value, ctx, args...);
}
return out;
}
};
/**
\rst
Returns an object that formats `tuple` with elements separated by `sep`.
**Example**::
std::tuple<int, char> t = {1, 'a'};
fmt::print("{}", fmt::join(t, ", "));
// Output: "1, a"
\endrst
*/
template <typename... T>
FMT_CONSTEXPR tuple_arg_join<char, T...> join(const std::tuple<T...>& tuple,
string_view sep) {
return {tuple, sep};
}
template <typename... T>
FMT_CONSTEXPR tuple_arg_join<wchar_t, T...> join(const std::tuple<T...>& tuple,
wstring_view sep) {
return {tuple, sep};
}
/**
\rst
Returns an object that formats `initializer_list` with elements separated by
`sep`.
**Example**::
fmt::print("{}", fmt::join({1, 2, 3}, ", "));
// Output: "1, 2, 3"
\endrst
*/
template <typename T>
arg_join<internal::iterator_t<const std::initializer_list<T>>, char> join(
std::initializer_list<T> list, string_view sep) {
return join(std::begin(list), std::end(list), sep);
}
template <typename T>
arg_join<internal::iterator_t<const std::initializer_list<T>>, wchar_t> join(
std::initializer_list<T> list, wstring_view sep) {
return join(std::begin(list), std::end(list), sep);
}
FMT_END_NAMESPACE
#endif // FMT_RANGES_H_

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@ -1,160 +0,0 @@
// Formatting library for C++ - time formatting
//
// Copyright (c) 2012 - present, Victor Zverovich
// All rights reserved.
//
// For the license information refer to format.h.
#ifndef FMT_TIME_H_
#define FMT_TIME_H_
#include "format.h"
#include <ctime>
#include <locale>
FMT_BEGIN_NAMESPACE
// Prevents expansion of a preceding token as a function-style macro.
// Usage: f FMT_NOMACRO()
#define FMT_NOMACRO
namespace internal{
inline null<> localtime_r FMT_NOMACRO(...) { return null<>(); }
inline null<> localtime_s(...) { return null<>(); }
inline null<> gmtime_r(...) { return null<>(); }
inline null<> gmtime_s(...) { return null<>(); }
} // namespace internal
// Thread-safe replacement for std::localtime
inline std::tm localtime(std::time_t time) {
struct dispatcher {
std::time_t time_;
std::tm tm_;
dispatcher(std::time_t t): time_(t) {}
bool run() {
using namespace fmt::internal;
return handle(localtime_r(&time_, &tm_));
}
bool handle(std::tm *tm) { return tm != FMT_NULL; }
bool handle(internal::null<>) {
using namespace fmt::internal;
return fallback(localtime_s(&tm_, &time_));
}
bool fallback(int res) { return res == 0; }
#if !FMT_MSC_VER
bool fallback(internal::null<>) {
using namespace fmt::internal;
std::tm *tm = std::localtime(&time_);
if (tm) tm_ = *tm;
return tm != FMT_NULL;
}
#endif
};
dispatcher lt(time);
// Too big time values may be unsupported.
if (!lt.run())
FMT_THROW(format_error("time_t value out of range"));
return lt.tm_;
}
// Thread-safe replacement for std::gmtime
inline std::tm gmtime(std::time_t time) {
struct dispatcher {
std::time_t time_;
std::tm tm_;
dispatcher(std::time_t t): time_(t) {}
bool run() {
using namespace fmt::internal;
return handle(gmtime_r(&time_, &tm_));
}
bool handle(std::tm *tm) { return tm != FMT_NULL; }
bool handle(internal::null<>) {
using namespace fmt::internal;
return fallback(gmtime_s(&tm_, &time_));
}
bool fallback(int res) { return res == 0; }
#if !FMT_MSC_VER
bool fallback(internal::null<>) {
std::tm *tm = std::gmtime(&time_);
if (tm) tm_ = *tm;
return tm != FMT_NULL;
}
#endif
};
dispatcher gt(time);
// Too big time values may be unsupported.
if (!gt.run())
FMT_THROW(format_error("time_t value out of range"));
return gt.tm_;
}
namespace internal {
inline std::size_t strftime(char *str, std::size_t count, const char *format,
const std::tm *time) {
return std::strftime(str, count, format, time);
}
inline std::size_t strftime(wchar_t *str, std::size_t count,
const wchar_t *format, const std::tm *time) {
return std::wcsftime(str, count, format, time);
}
}
template <typename Char>
struct formatter<std::tm, Char> {
template <typename ParseContext>
auto parse(ParseContext &ctx) -> decltype(ctx.begin()) {
auto it = ctx.begin();
if (it != ctx.end() && *it == ':')
++it;
auto end = it;
while (end != ctx.end() && *end != '}')
++end;
tm_format.reserve(internal::to_unsigned(end - it + 1));
tm_format.append(it, end);
tm_format.push_back('\0');
return end;
}
template <typename FormatContext>
auto format(const std::tm &tm, FormatContext &ctx) -> decltype(ctx.out()) {
basic_memory_buffer<Char> buf;
std::size_t start = buf.size();
for (;;) {
std::size_t size = buf.capacity() - start;
std::size_t count =
internal::strftime(&buf[start], size, &tm_format[0], &tm);
if (count != 0) {
buf.resize(start + count);
break;
}
if (size >= tm_format.size() * 256) {
// If the buffer is 256 times larger than the format string, assume
// that `strftime` gives an empty result. There doesn't seem to be a
// better way to distinguish the two cases:
// https://github.com/fmtlib/fmt/issues/367
break;
}
const std::size_t MIN_GROWTH = 10;
buf.reserve(buf.capacity() + (size > MIN_GROWTH ? size : MIN_GROWTH));
}
return std::copy(buf.begin(), buf.end(), ctx.out());
}
basic_memory_buffer<Char> tm_format;
};
FMT_END_NAMESPACE
#endif // FMT_TIME_H_

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@ -8,51 +8,168 @@
#include "fmt/format-inl.h"
FMT_BEGIN_NAMESPACE
template struct internal::basic_data<void>;
template FMT_API internal::locale_ref::locale_ref(const std::locale &loc);
namespace internal {
template <typename T>
int format_float(char* buf, std::size_t size, const char* format, int precision,
T value) {
#ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION
if (precision > 100000)
throw std::runtime_error(
"fuzz mode - avoid large allocation inside snprintf");
#endif
// Suppress the warning about nonliteral format string.
int (*snprintf_ptr)(char*, size_t, const char*, ...) = FMT_SNPRINTF;
return precision < 0 ? snprintf_ptr(buf, size, format, value)
: snprintf_ptr(buf, size, format, precision, value);
}
struct sprintf_specs {
int precision;
char type;
bool alt : 1;
template <typename Char>
constexpr sprintf_specs(basic_format_specs<Char> specs)
: precision(specs.precision), type(specs.type), alt(specs.alt) {}
constexpr bool has_precision() const { return precision >= 0; }
};
// This is deprecated and is kept only to preserve ABI compatibility.
template <typename Double>
char* sprintf_format(Double value, internal::buffer<char>& buf,
sprintf_specs specs) {
// Buffer capacity must be non-zero, otherwise MSVC's vsnprintf_s will fail.
FMT_ASSERT(buf.capacity() != 0, "empty buffer");
// Build format string.
enum { max_format_size = 10 }; // longest format: %#-*.*Lg
char format[max_format_size];
char* format_ptr = format;
*format_ptr++ = '%';
if (specs.alt || !specs.type) *format_ptr++ = '#';
if (specs.precision >= 0) {
*format_ptr++ = '.';
*format_ptr++ = '*';
}
if (std::is_same<Double, long double>::value) *format_ptr++ = 'L';
char type = specs.type;
if (type == '%')
type = 'f';
else if (type == 0 || type == 'n')
type = 'g';
#if FMT_MSC_VER
if (type == 'F') {
// MSVC's printf doesn't support 'F'.
type = 'f';
}
#endif
*format_ptr++ = type;
*format_ptr = '\0';
// Format using snprintf.
char* start = nullptr;
char* decimal_point_pos = nullptr;
for (;;) {
std::size_t buffer_size = buf.capacity();
start = &buf[0];
int result =
format_float(start, buffer_size, format, specs.precision, value);
if (result >= 0) {
unsigned n = internal::to_unsigned(result);
if (n < buf.capacity()) {
// Find the decimal point.
auto p = buf.data(), end = p + n;
if (*p == '+' || *p == '-') ++p;
if (specs.type != 'a' && specs.type != 'A') {
while (p < end && *p >= '0' && *p <= '9') ++p;
if (p < end && *p != 'e' && *p != 'E') {
decimal_point_pos = p;
if (!specs.type) {
// Keep only one trailing zero after the decimal point.
++p;
if (*p == '0') ++p;
while (p != end && *p >= '1' && *p <= '9') ++p;
char* where = p;
while (p != end && *p == '0') ++p;
if (p == end || *p < '0' || *p > '9') {
if (p != end) std::memmove(where, p, to_unsigned(end - p));
n -= static_cast<unsigned>(p - where);
}
}
}
}
buf.resize(n);
break; // The buffer is large enough - continue with formatting.
}
buf.reserve(n + 1);
} else {
// If result is negative we ask to increase the capacity by at least 1,
// but as std::vector, the buffer grows exponentially.
buf.reserve(buf.capacity() + 1);
}
}
return decimal_point_pos;
}
} // namespace internal
template FMT_API char* internal::sprintf_format(double, internal::buffer<char>&,
sprintf_specs);
template FMT_API char* internal::sprintf_format(long double,
internal::buffer<char>&,
sprintf_specs);
template struct FMT_INSTANTIATION_DEF_API internal::basic_data<void>;
// Workaround a bug in MSVC2013 that prevents instantiation of format_float.
int (*instantiate_format_float)(double, int, internal::float_specs,
internal::buffer<char>&) =
internal::format_float;
#ifndef FMT_STATIC_THOUSANDS_SEPARATOR
template FMT_API internal::locale_ref::locale_ref(const std::locale& loc);
template FMT_API std::locale internal::locale_ref::get<std::locale>() const;
#endif
// Explicit instantiations for char.
template FMT_API std::string internal::grouping_impl<char>(locale_ref);
template FMT_API char internal::thousands_sep_impl(locale_ref);
template FMT_API char internal::decimal_point_impl(locale_ref);
template FMT_API void internal::basic_buffer<char>::append(const char *, const char *);
template FMT_API void internal::buffer<char>::append(const char*, const char*);
template FMT_API void internal::arg_map<format_context>::init(
const basic_format_args<format_context> &args);
template FMT_API int internal::char_traits<char>::format_float(
char *, std::size_t, const char *, int, double);
template FMT_API int internal::char_traits<char>::format_float(
char *, std::size_t, const char *, int, long double);
const basic_format_args<format_context>& args);
template FMT_API std::string internal::vformat<char>(
string_view, basic_format_args<format_context>);
template FMT_API format_context::iterator internal::vformat_to(
internal::buffer &, string_view, basic_format_args<format_context>);
internal::buffer<char>&, string_view, basic_format_args<format_context>);
template FMT_API void internal::sprintf_format(
double, internal::buffer &, core_format_specs);
template FMT_API void internal::sprintf_format(
long double, internal::buffer &, core_format_specs);
template FMT_API int internal::snprintf_float(double, int,
internal::float_specs,
internal::buffer<char>&);
template FMT_API int internal::snprintf_float(long double, int,
internal::float_specs,
internal::buffer<char>&);
template FMT_API int internal::format_float(double, int, internal::float_specs,
internal::buffer<char>&);
template FMT_API int internal::format_float(long double, int,
internal::float_specs,
internal::buffer<char>&);
// Explicit instantiations for wchar_t.
template FMT_API std::string internal::grouping_impl<wchar_t>(locale_ref);
template FMT_API wchar_t internal::thousands_sep_impl(locale_ref);
template FMT_API wchar_t internal::decimal_point_impl(locale_ref);
template FMT_API void internal::basic_buffer<wchar_t>::append(
const wchar_t *, const wchar_t *);
template FMT_API void internal::arg_map<wformat_context>::init(
const basic_format_args<wformat_context> &);
template FMT_API int internal::char_traits<wchar_t>::format_float(
wchar_t *, std::size_t, const wchar_t *, int, double);
template FMT_API int internal::char_traits<wchar_t>::format_float(
wchar_t *, std::size_t, const wchar_t *, int, long double);
template FMT_API void internal::buffer<wchar_t>::append(const wchar_t*,
const wchar_t*);
template FMT_API std::wstring internal::vformat<wchar_t>(
wstring_view, basic_format_args<wformat_context>);

316
src/os.cc Normal file
View file

@ -0,0 +1,316 @@
// Formatting library for C++ - optional OS-specific functionality
//
// Copyright (c) 2012 - 2016, Victor Zverovich
// All rights reserved.
//
// For the license information refer to format.h.
// Disable bogus MSVC warnings.
#if !defined(_CRT_SECURE_NO_WARNINGS) && defined(_MSC_VER)
# define _CRT_SECURE_NO_WARNINGS
#endif
#include "fmt/os.h"
#include <climits>
#if FMT_USE_FCNTL
# include <sys/stat.h>
# include <sys/types.h>
# ifndef _WIN32
# include <unistd.h>
# else
# ifndef WIN32_LEAN_AND_MEAN
# define WIN32_LEAN_AND_MEAN
# endif
# include <io.h>
# include <windows.h>
# define O_CREAT _O_CREAT
# define O_TRUNC _O_TRUNC
# ifndef S_IRUSR
# define S_IRUSR _S_IREAD
# endif
# ifndef S_IWUSR
# define S_IWUSR _S_IWRITE
# endif
# ifdef __MINGW32__
# define _SH_DENYNO 0x40
# endif
# endif // _WIN32
#endif // FMT_USE_FCNTL
#ifdef _WIN32
# include <windows.h>
#endif
#ifdef fileno
# undef fileno
#endif
namespace {
#ifdef _WIN32
// Return type of read and write functions.
using RWResult = int;
// On Windows the count argument to read and write is unsigned, so convert
// it from size_t preventing integer overflow.
inline unsigned convert_rwcount(std::size_t count) {
return count <= UINT_MAX ? static_cast<unsigned>(count) : UINT_MAX;
}
#else
// Return type of read and write functions.
using RWResult = ssize_t;
inline std::size_t convert_rwcount(std::size_t count) { return count; }
#endif
} // namespace
FMT_BEGIN_NAMESPACE
#ifdef _WIN32
internal::utf16_to_utf8::utf16_to_utf8(wstring_view s) {
if (int error_code = convert(s)) {
FMT_THROW(windows_error(error_code,
"cannot convert string from UTF-16 to UTF-8"));
}
}
int internal::utf16_to_utf8::convert(wstring_view s) {
if (s.size() > INT_MAX) return ERROR_INVALID_PARAMETER;
int s_size = static_cast<int>(s.size());
if (s_size == 0) {
// WideCharToMultiByte does not support zero length, handle separately.
buffer_.resize(1);
buffer_[0] = 0;
return 0;
}
int length = WideCharToMultiByte(CP_UTF8, 0, s.data(), s_size, nullptr, 0,
nullptr, nullptr);
if (length == 0) return GetLastError();
buffer_.resize(length + 1);
length = WideCharToMultiByte(CP_UTF8, 0, s.data(), s_size, &buffer_[0],
length, nullptr, nullptr);
if (length == 0) return GetLastError();
buffer_[length] = 0;
return 0;
}
void windows_error::init(int err_code, string_view format_str,
format_args args) {
error_code_ = err_code;
memory_buffer buffer;
internal::format_windows_error(buffer, err_code, vformat(format_str, args));
std::runtime_error& base = *this;
base = std::runtime_error(to_string(buffer));
}
void internal::format_windows_error(internal::buffer<char>& out, int error_code,
string_view message) FMT_NOEXCEPT {
FMT_TRY {
wmemory_buffer buf;
buf.resize(inline_buffer_size);
for (;;) {
wchar_t* system_message = &buf[0];
int result = FormatMessageW(
FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS, nullptr,
error_code, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), system_message,
static_cast<uint32_t>(buf.size()), nullptr);
if (result != 0) {
utf16_to_utf8 utf8_message;
if (utf8_message.convert(system_message) == ERROR_SUCCESS) {
internal::writer w(out);
w.write(message);
w.write(": ");
w.write(utf8_message);
return;
}
break;
}
if (GetLastError() != ERROR_INSUFFICIENT_BUFFER)
break; // Can't get error message, report error code instead.
buf.resize(buf.size() * 2);
}
}
FMT_CATCH(...) {}
format_error_code(out, error_code, message);
}
void report_windows_error(int error_code,
fmt::string_view message) FMT_NOEXCEPT {
report_error(internal::format_windows_error, error_code, message);
}
#endif // _WIN32
buffered_file::~buffered_file() FMT_NOEXCEPT {
if (file_ && FMT_SYSTEM(fclose(file_)) != 0)
report_system_error(errno, "cannot close file");
}
buffered_file::buffered_file(cstring_view filename, cstring_view mode) {
FMT_RETRY_VAL(file_, FMT_SYSTEM(fopen(filename.c_str(), mode.c_str())),
nullptr);
if (!file_)
FMT_THROW(system_error(errno, "cannot open file {}", filename.c_str()));
}
void buffered_file::close() {
if (!file_) return;
int result = FMT_SYSTEM(fclose(file_));
file_ = nullptr;
if (result != 0) FMT_THROW(system_error(errno, "cannot close file"));
}
// A macro used to prevent expansion of fileno on broken versions of MinGW.
#define FMT_ARGS
int buffered_file::fileno() const {
int fd = FMT_POSIX_CALL(fileno FMT_ARGS(file_));
if (fd == -1) FMT_THROW(system_error(errno, "cannot get file descriptor"));
return fd;
}
#if FMT_USE_FCNTL
file::file(cstring_view path, int oflag) {
int mode = S_IRUSR | S_IWUSR;
# if defined(_WIN32) && !defined(__MINGW32__)
fd_ = -1;
FMT_POSIX_CALL(sopen_s(&fd_, path.c_str(), oflag, _SH_DENYNO, mode));
# else
FMT_RETRY(fd_, FMT_POSIX_CALL(open(path.c_str(), oflag, mode)));
# endif
if (fd_ == -1)
FMT_THROW(system_error(errno, "cannot open file {}", path.c_str()));
}
file::~file() FMT_NOEXCEPT {
// Don't retry close in case of EINTR!
// See http://linux.derkeiler.com/Mailing-Lists/Kernel/2005-09/3000.html
if (fd_ != -1 && FMT_POSIX_CALL(close(fd_)) != 0)
report_system_error(errno, "cannot close file");
}
void file::close() {
if (fd_ == -1) return;
// Don't retry close in case of EINTR!
// See http://linux.derkeiler.com/Mailing-Lists/Kernel/2005-09/3000.html
int result = FMT_POSIX_CALL(close(fd_));
fd_ = -1;
if (result != 0) FMT_THROW(system_error(errno, "cannot close file"));
}
long long file::size() const {
# ifdef _WIN32
// Use GetFileSize instead of GetFileSizeEx for the case when _WIN32_WINNT
// is less than 0x0500 as is the case with some default MinGW builds.
// Both functions support large file sizes.
DWORD size_upper = 0;
HANDLE handle = reinterpret_cast<HANDLE>(_get_osfhandle(fd_));
DWORD size_lower = FMT_SYSTEM(GetFileSize(handle, &size_upper));
if (size_lower == INVALID_FILE_SIZE) {
DWORD error = GetLastError();
if (error != NO_ERROR)
FMT_THROW(windows_error(GetLastError(), "cannot get file size"));
}
unsigned long long long_size = size_upper;
return (long_size << sizeof(DWORD) * CHAR_BIT) | size_lower;
# else
using Stat = struct stat;
Stat file_stat = Stat();
if (FMT_POSIX_CALL(fstat(fd_, &file_stat)) == -1)
FMT_THROW(system_error(errno, "cannot get file attributes"));
static_assert(sizeof(long long) >= sizeof(file_stat.st_size),
"return type of file::size is not large enough");
return file_stat.st_size;
# endif
}
std::size_t file::read(void* buffer, std::size_t count) {
RWResult result = 0;
FMT_RETRY(result, FMT_POSIX_CALL(read(fd_, buffer, convert_rwcount(count))));
if (result < 0) FMT_THROW(system_error(errno, "cannot read from file"));
return internal::to_unsigned(result);
}
std::size_t file::write(const void* buffer, std::size_t count) {
RWResult result = 0;
FMT_RETRY(result, FMT_POSIX_CALL(write(fd_, buffer, convert_rwcount(count))));
if (result < 0) FMT_THROW(system_error(errno, "cannot write to file"));
return internal::to_unsigned(result);
}
file file::dup(int fd) {
// Don't retry as dup doesn't return EINTR.
// http://pubs.opengroup.org/onlinepubs/009695399/functions/dup.html
int new_fd = FMT_POSIX_CALL(dup(fd));
if (new_fd == -1)
FMT_THROW(system_error(errno, "cannot duplicate file descriptor {}", fd));
return file(new_fd);
}
void file::dup2(int fd) {
int result = 0;
FMT_RETRY(result, FMT_POSIX_CALL(dup2(fd_, fd)));
if (result == -1) {
FMT_THROW(system_error(errno, "cannot duplicate file descriptor {} to {}",
fd_, fd));
}
}
void file::dup2(int fd, error_code& ec) FMT_NOEXCEPT {
int result = 0;
FMT_RETRY(result, FMT_POSIX_CALL(dup2(fd_, fd)));
if (result == -1) ec = error_code(errno);
}
void file::pipe(file& read_end, file& write_end) {
// Close the descriptors first to make sure that assignments don't throw
// and there are no leaks.
read_end.close();
write_end.close();
int fds[2] = {};
# ifdef _WIN32
// Make the default pipe capacity same as on Linux 2.6.11+.
enum { DEFAULT_CAPACITY = 65536 };
int result = FMT_POSIX_CALL(pipe(fds, DEFAULT_CAPACITY, _O_BINARY));
# else
// Don't retry as the pipe function doesn't return EINTR.
// http://pubs.opengroup.org/onlinepubs/009696799/functions/pipe.html
int result = FMT_POSIX_CALL(pipe(fds));
# endif
if (result != 0) FMT_THROW(system_error(errno, "cannot create pipe"));
// The following assignments don't throw because read_fd and write_fd
// are closed.
read_end = file(fds[0]);
write_end = file(fds[1]);
}
buffered_file file::fdopen(const char* mode) {
// Don't retry as fdopen doesn't return EINTR.
FILE* f = FMT_POSIX_CALL(fdopen(fd_, mode));
if (!f)
FMT_THROW(
system_error(errno, "cannot associate stream with file descriptor"));
buffered_file bf(f);
fd_ = -1;
return bf;
}
long getpagesize() {
# ifdef _WIN32
SYSTEM_INFO si;
GetSystemInfo(&si);
return si.dwPageSize;
# else
long size = FMT_POSIX_CALL(sysconf(_SC_PAGESIZE));
if (size < 0) FMT_THROW(system_error(errno, "cannot get memory page size"));
return size;
# endif
}
#endif // FMT_USE_FCNTL
FMT_END_NAMESPACE

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@ -1,244 +0,0 @@
// A C++ interface to POSIX functions.
//
// Copyright (c) 2012 - 2016, Victor Zverovich
// All rights reserved.
//
// For the license information refer to format.h.
// Disable bogus MSVC warnings.
#if !defined(_CRT_SECURE_NO_WARNINGS) && defined(_MSC_VER)
# define _CRT_SECURE_NO_WARNINGS
#endif
#include "fmt/posix.h"
#include <limits.h>
#include <sys/types.h>
#include <sys/stat.h>
#ifndef _WIN32
# include <unistd.h>
#else
# ifndef WIN32_LEAN_AND_MEAN
# define WIN32_LEAN_AND_MEAN
# endif
# include <windows.h>
# include <io.h>
# define O_CREAT _O_CREAT
# define O_TRUNC _O_TRUNC
# ifndef S_IRUSR
# define S_IRUSR _S_IREAD
# endif
# ifndef S_IWUSR
# define S_IWUSR _S_IWRITE
# endif
# ifdef __MINGW32__
# define _SH_DENYNO 0x40
# endif
#endif // _WIN32
#ifdef fileno
# undef fileno
#endif
namespace {
#ifdef _WIN32
// Return type of read and write functions.
typedef int RWResult;
// On Windows the count argument to read and write is unsigned, so convert
// it from size_t preventing integer overflow.
inline unsigned convert_rwcount(std::size_t count) {
return count <= UINT_MAX ? static_cast<unsigned>(count) : UINT_MAX;
}
#else
// Return type of read and write functions.
typedef ssize_t RWResult;
inline std::size_t convert_rwcount(std::size_t count) { return count; }
#endif
}
FMT_BEGIN_NAMESPACE
buffered_file::~buffered_file() FMT_NOEXCEPT {
if (file_ && FMT_SYSTEM(fclose(file_)) != 0)
report_system_error(errno, "cannot close file");
}
buffered_file::buffered_file(cstring_view filename, cstring_view mode) {
FMT_RETRY_VAL(file_,
FMT_SYSTEM(fopen(filename.c_str(), mode.c_str())), FMT_NULL);
if (!file_)
FMT_THROW(system_error(errno, "cannot open file {}", filename.c_str()));
}
void buffered_file::close() {
if (!file_)
return;
int result = FMT_SYSTEM(fclose(file_));
file_ = FMT_NULL;
if (result != 0)
FMT_THROW(system_error(errno, "cannot close file"));
}
// A macro used to prevent expansion of fileno on broken versions of MinGW.
#define FMT_ARGS
int buffered_file::fileno() const {
int fd = FMT_POSIX_CALL(fileno FMT_ARGS(file_));
if (fd == -1)
FMT_THROW(system_error(errno, "cannot get file descriptor"));
return fd;
}
file::file(cstring_view path, int oflag) {
int mode = S_IRUSR | S_IWUSR;
#if defined(_WIN32) && !defined(__MINGW32__)
fd_ = -1;
FMT_POSIX_CALL(sopen_s(&fd_, path.c_str(), oflag, _SH_DENYNO, mode));
#else
FMT_RETRY(fd_, FMT_POSIX_CALL(open(path.c_str(), oflag, mode)));
#endif
if (fd_ == -1)
FMT_THROW(system_error(errno, "cannot open file {}", path.c_str()));
}
file::~file() FMT_NOEXCEPT {
// Don't retry close in case of EINTR!
// See http://linux.derkeiler.com/Mailing-Lists/Kernel/2005-09/3000.html
if (fd_ != -1 && FMT_POSIX_CALL(close(fd_)) != 0)
report_system_error(errno, "cannot close file");
}
void file::close() {
if (fd_ == -1)
return;
// Don't retry close in case of EINTR!
// See http://linux.derkeiler.com/Mailing-Lists/Kernel/2005-09/3000.html
int result = FMT_POSIX_CALL(close(fd_));
fd_ = -1;
if (result != 0)
FMT_THROW(system_error(errno, "cannot close file"));
}
long long file::size() const {
#ifdef _WIN32
// Use GetFileSize instead of GetFileSizeEx for the case when _WIN32_WINNT
// is less than 0x0500 as is the case with some default MinGW builds.
// Both functions support large file sizes.
DWORD size_upper = 0;
HANDLE handle = reinterpret_cast<HANDLE>(_get_osfhandle(fd_));
DWORD size_lower = FMT_SYSTEM(GetFileSize(handle, &size_upper));
if (size_lower == INVALID_FILE_SIZE) {
DWORD error = GetLastError();
if (error != NO_ERROR)
FMT_THROW(windows_error(GetLastError(), "cannot get file size"));
}
unsigned long long long_size = size_upper;
return (long_size << sizeof(DWORD) * CHAR_BIT) | size_lower;
#else
typedef struct stat Stat;
Stat file_stat = Stat();
if (FMT_POSIX_CALL(fstat(fd_, &file_stat)) == -1)
FMT_THROW(system_error(errno, "cannot get file attributes"));
static_assert(sizeof(long long) >= sizeof(file_stat.st_size),
"return type of file::size is not large enough");
return file_stat.st_size;
#endif
}
std::size_t file::read(void *buffer, std::size_t count) {
RWResult result = 0;
FMT_RETRY(result, FMT_POSIX_CALL(read(fd_, buffer, convert_rwcount(count))));
if (result < 0)
FMT_THROW(system_error(errno, "cannot read from file"));
return internal::to_unsigned(result);
}
std::size_t file::write(const void *buffer, std::size_t count) {
RWResult result = 0;
FMT_RETRY(result, FMT_POSIX_CALL(write(fd_, buffer, convert_rwcount(count))));
if (result < 0)
FMT_THROW(system_error(errno, "cannot write to file"));
return internal::to_unsigned(result);
}
file file::dup(int fd) {
// Don't retry as dup doesn't return EINTR.
// http://pubs.opengroup.org/onlinepubs/009695399/functions/dup.html
int new_fd = FMT_POSIX_CALL(dup(fd));
if (new_fd == -1)
FMT_THROW(system_error(errno, "cannot duplicate file descriptor {}", fd));
return file(new_fd);
}
void file::dup2(int fd) {
int result = 0;
FMT_RETRY(result, FMT_POSIX_CALL(dup2(fd_, fd)));
if (result == -1) {
FMT_THROW(system_error(errno,
"cannot duplicate file descriptor {} to {}", fd_, fd));
}
}
void file::dup2(int fd, error_code &ec) FMT_NOEXCEPT {
int result = 0;
FMT_RETRY(result, FMT_POSIX_CALL(dup2(fd_, fd)));
if (result == -1)
ec = error_code(errno);
}
void file::pipe(file &read_end, file &write_end) {
// Close the descriptors first to make sure that assignments don't throw
// and there are no leaks.
read_end.close();
write_end.close();
int fds[2] = {};
#ifdef _WIN32
// Make the default pipe capacity same as on Linux 2.6.11+.
enum { DEFAULT_CAPACITY = 65536 };
int result = FMT_POSIX_CALL(pipe(fds, DEFAULT_CAPACITY, _O_BINARY));
#else
// Don't retry as the pipe function doesn't return EINTR.
// http://pubs.opengroup.org/onlinepubs/009696799/functions/pipe.html
int result = FMT_POSIX_CALL(pipe(fds));
#endif
if (result != 0)
FMT_THROW(system_error(errno, "cannot create pipe"));
// The following assignments don't throw because read_fd and write_fd
// are closed.
read_end = file(fds[0]);
write_end = file(fds[1]);
}
buffered_file file::fdopen(const char *mode) {
// Don't retry as fdopen doesn't return EINTR.
FILE *f = FMT_POSIX_CALL(fdopen(fd_, mode));
if (!f)
FMT_THROW(system_error(errno,
"cannot associate stream with file descriptor"));
buffered_file bf(f);
fd_ = -1;
return bf;
}
long getpagesize() {
#ifdef _WIN32
SYSTEM_INFO si;
GetSystemInfo(&si);
return si.dwPageSize;
#else
long size = FMT_POSIX_CALL(sysconf(_SC_PAGESIZE));
if (size < 0)
FMT_THROW(system_error(errno, "cannot get memory page size"));
return size;
#endif
}
FMT_END_NAMESPACE

2061
support/C++.sublime-syntax Normal file

File diff suppressed because it is too large Load diff

19
support/Vagrantfile vendored Normal file
View file

@ -0,0 +1,19 @@
# -*- mode: ruby -*-
# vi: set ft=ruby :
# A vagrant config for testing against gcc-4.8.
Vagrant.configure("2") do |config|
config.vm.box = "ubuntu/xenial64"
config.vm.provider "virtualbox" do |vb|
vb.memory = "4096"
end
config.vm.provision "shell", inline: <<-SHELL
apt-get update
apt-get install -y g++ make wget git
wget -q https://github.com/Kitware/CMake/releases/download/v3.14.4/cmake-3.14.4-Linux-x86_64.tar.gz
tar xzf cmake-3.14.4-Linux-x86_64.tar.gz
ln -s `pwd`/cmake-3.14.4-Linux-x86_64/bin/cmake /usr/local/bin
SHELL
end

View file

@ -23,9 +23,12 @@ else:
# Add MSBuild 14.0 to PATH as described in
# http://help.appveyor.com/discussions/problems/2229-v140-not-found-on-vs2105rc.
os.environ['PATH'] = r'C:\Program Files (x86)\MSBuild\15.0\Bin;' + path
if image == 'Visual Studio 2013':
generator = 'Visual Studio 12 2013'
elif image == 'Visual Studio 2015':
if image == 'Visual Studio 2019':
generator = 'Visual Studio 16 2019'
if platform == 'x64':
cmake_command.extend(['-A', 'x64'])
else:
if image == 'Visual Studio 2015':
generator = 'Visual Studio 14 2015'
elif image == 'Visual Studio 2017':
generator = 'Visual Studio 15 2017'

View file

@ -4,20 +4,27 @@ configuration:
clone_depth: 1
image:
- Visual Studio 2015
- Visual Studio 2019
- Visual Studio 2017
platform:
- Win32
- x64
image:
- Visual Studio 2013
- Visual Studio 2015
- Visual Studio 2017
environment:
CTEST_OUTPUT_ON_FAILURE: 1
MSVC_DEFAULT_OPTIONS: ON
BUILD: msvc
matrix:
exclude:
- image: Visual Studio 2015
platform: Win32
- image: Visual Studio 2019
platform: Win32
before_build:
- mkdir build
- cd build

View file

@ -9,10 +9,12 @@ buildscript {
//
// https://developer.android.com/studio/releases/gradle-plugin
//
// Notice that 3.1.3 here is the version of [Android Gradle Plugin]
// Accroding to URL above you will need Gradle 4.4 or higher
// Notice that 3.3.0 here is the version of [Android Gradle Plugin]
// Accroding to URL above you will need Gradle 5.0 or higher
//
classpath 'com.android.tools.build:gradle:3.1.3'
// If you are using Android Studio, and it is using Gradle's lower
// version, Use the plugin version 3.1.3 ~ 3.2.0 for Gradle 4.4 ~ 4.10
classpath 'com.android.tools.build:gradle:3.3.0'
}
}
repositories {
@ -43,8 +45,8 @@ android {
defaultConfig {
minSdkVersion 21 // Android 5.0+
targetSdkVersion 25 // Follow Compile SDK
versionCode 20 // Follow release count
versionName "5.2.1" // Follow Official version
versionCode 21 // Follow release count
versionName "5.3.0" // Follow Official version
testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
externalNativeBuild {

View file

@ -48,43 +48,6 @@ endif ()
set(CMAKE_REQUIRED_FLAGS ${CXX_STANDARD_FLAG})
# Check if variadic templates are working and not affected by GCC bug 39653:
# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=39653
check_cxx_source_compiles("
template <class T, class ...Types>
struct S { typedef typename S<Types...>::type type; };
int main() {}" SUPPORTS_VARIADIC_TEMPLATES)
if (NOT SUPPORTS_VARIADIC_TEMPLATES)
set (SUPPORTS_VARIADIC_TEMPLATES OFF)
endif ()
# Check if initializer lists are supported.
check_cxx_source_compiles("
#include <initializer_list>
int main() {}" SUPPORTS_INITIALIZER_LIST)
if (NOT SUPPORTS_INITIALIZER_LIST)
set (SUPPORTS_INITIALIZER_LIST OFF)
endif ()
# Check if enum bases are available
check_cxx_source_compiles("
enum C : char {A};
int main() {}"
SUPPORTS_ENUM_BASE)
if (NOT SUPPORTS_ENUM_BASE)
set (SUPPORTS_ENUM_BASE OFF)
endif ()
# Check if type traits are available
check_cxx_source_compiles("
#include <type_traits>
class C { void operator=(const C&); };
int main() { static_assert(!std::is_copy_assignable<C>::value, \"\"); }"
SUPPORTS_TYPE_TRAITS)
if (NOT SUPPORTS_TYPE_TRAITS)
set (SUPPORTS_TYPE_TRAITS OFF)
endif ()
# Check if user-defined literals are available
check_cxx_source_compiles("
void operator\"\" _udl(long double);
@ -94,4 +57,14 @@ if (NOT SUPPORTS_USER_DEFINED_LITERALS)
set (SUPPORTS_USER_DEFINED_LITERALS OFF)
endif ()
# Check if <variant> is available
set(CMAKE_REQUIRED_FLAGS -std=c++1z)
check_cxx_source_compiles("
#include <variant>
int main() {}"
FMT_HAS_VARIANT)
if (NOT FMT_HAS_VARIANT)
set (FMT_HAS_VARIANT OFF)
endif ()
set(CMAKE_REQUIRED_FLAGS )

View file

@ -1,11 +1,11 @@
prefix=@CMAKE_INSTALL_PREFIX@
exec_prefix=@CMAKE_INSTALL_PREFIX@
libdir=@CMAKE_INSTALL_FULL_LIBDIR@
includedir=@CMAKE_INSTALL_FULL_INCLUDEDIR@
libdir=${exec_prefix}/@CMAKE_INSTALL_LIBDIR@
includedir=${prefix}/@CMAKE_INSTALL_INCLUDEDIR@
Name: fmt
Description: A modern formatting library
Version: @FMT_VERSION@
Libs: -L${libdir} -lfmt
Libs: -L${libdir} -l@FMT_LIB_NAME@
Cflags: -I${includedir}

View file

@ -1,11 +0,0 @@
@echo on
rem This scripts configures build environment and runs CMake.
rem Use it instead of running CMake directly when building with
rem the Microsoft SDK toolchain rather than Visual Studio.
rem It is used in the same way as cmake, for example:
rem
rem run-cmake -G "Visual Studio 10 Win64" .
for /F "delims=" %%i IN ('cmake "-DPRINT_PATH=1" -P %~dp0/FindSetEnv.cmake') DO set setenv=%%i
if NOT "%setenv%" == "" call "%setenv%"
cmake %*

View file

@ -5,6 +5,9 @@
Usage:
manage.py release [<branch>]
manage.py site
For the release command $FMT_TOKEN should contain a GitHub personal access token
obtained from https://github.com/settings/tokens.
"""
from __future__ import print_function
@ -134,7 +137,7 @@ def update_site(env):
if not os.path.exists(contents):
os.rename(os.path.join(target_doc_dir, 'index.rst'), contents)
# Fix issues in reference.rst/api.rst.
for filename in ['reference.rst', 'api.rst']:
for filename in ['reference.rst', 'api.rst', 'index.rst']:
pattern = re.compile('doxygenfunction.. (bin|oct|hexu|hex)$', re.M)
with rewrite(os.path.join(target_doc_dir, filename)) as b:
b.data = b.data.replace('std::ostream &', 'std::ostream&')
@ -142,6 +145,8 @@ def update_site(env):
b.data = b.data.replace('std::FILE*', 'std::FILE *')
b.data = b.data.replace('unsigned int', 'unsigned')
b.data = b.data.replace('operator""_', 'operator"" _')
b.data = b.data.replace(', size_t', ', std::size_t')
b.data = b.data.replace('aa long', 'a long')
# Fix a broken link in index.rst.
index = os.path.join(target_doc_dir, 'index.rst')
with rewrite(index) as b:

View file

@ -1,2 +1,2 @@
If you are not redirected automatically, follow the
`link to the fmt documentation <http://fmtlib.net/latest/>`_.
`link to the fmt documentation <https://fmt.dev/latest/>`_.

View file

@ -2,15 +2,15 @@
{% block extrahead %}
<meta charset="UTF-8">
<meta http-equiv="refresh" content="1;url=http://fmtlib.net/latest/">
<meta http-equiv="refresh" content="1;url=https://fmt.dev/latest/">
<script type="text/javascript">
window.location.href = "http://fmtlib.net/latest/"
window.location.href = "https://fmt.dev/latest/"
</script>
<title>Page Redirection</title>
{% endblock %}
{% block document %}
If you are not redirected automatically, follow the <a href='http://fmtlib.net/latest/'>link to the fmt documentation</a>.
If you are not redirected automatically, follow the <a href='https://fmt.dev/latest/'>link to the fmt documentation</a>.
{% endblock %}
{% block footer %}

View file

@ -83,19 +83,25 @@ install_dir = os.path.join(fmt_dir, "_install")
build_dir = os.path.join(fmt_dir, "_build")
test_build_dir = os.path.join(fmt_dir, "_build_test")
# Configure library.
# Configure the library.
makedirs_if_not_exist(build_dir)
cmake_flags = [
'-DCMAKE_INSTALL_PREFIX=' + install_dir, '-DCMAKE_BUILD_TYPE=' + build,
'-DCMAKE_CXX_STANDARD=' + standard
]
# Make sure the fuzzers still compile.
main_cmake_flags = list(cmake_flags)
if 'ENABLE_FUZZING' in os.environ:
main_cmake_flags += ['-DFMT_FUZZ=ON', '-DFMT_FUZZ_LINKMAIN=On']
check_call(['cmake', '-DFMT_DOC=OFF', '-DFMT_PEDANTIC=ON', '-DFMT_WERROR=ON', fmt_dir] +
cmake_flags, cwd=build_dir)
main_cmake_flags, cwd=build_dir)
# Build library.
check_call(['make', '-j4'], cwd=build_dir)
# Build the library.
check_call(['cmake', '--build','.'], cwd=build_dir)
# Test library.
# Test the library.
env = os.environ.copy()
env['CTEST_OUTPUT_ON_FAILURE'] = '1'
if call(['make', 'test'], env=env, cwd=build_dir):
@ -103,7 +109,7 @@ if call(['make', 'test'], env=env, cwd=build_dir):
print(f.read())
sys.exit(-1)
# Install library.
# Install the library.
check_call(['make', 'install'], cwd=build_dir)
# Test installation.

View file

@ -17,13 +17,18 @@ else ()
target_compile_definitions(gmock PUBLIC GTEST_HAS_PTHREAD=0)
endif ()
if (NOT SUPPORTS_VARIADIC_TEMPLATES OR NOT SUPPORTS_INITIALIZER_LIST)
target_compile_definitions(gmock PUBLIC GTEST_LANG_CXX11=0)
endif ()
target_compile_definitions(gmock PUBLIC GTEST_LANG_CXX11=0)
# Workaround a bug in implementation of variadic templates in MSVC11.
if (MSVC)
# Workaround a bug in implementation of variadic templates in MSVC11.
target_compile_definitions(gmock PUBLIC _VARIADIC_MAX=10)
# Disable MSVC warnings of _CRT_INSECURE_DEPRECATE functions.
target_compile_definitions(gmock PRIVATE _CRT_SECURE_NO_WARNINGS)
if (CMAKE_CXX_COMPILER_ID MATCHES "Clang")
# Disable MSVC warnings of POSIX functions.
target_compile_options(gmock PUBLIC -Wno-deprecated-declarations)
endif ()
endif ()
# GTest doesn't detect <tuple> with clang.
@ -33,15 +38,13 @@ endif ()
# Silence MSVC tr1 deprecation warning in gmock.
target_compile_definitions(gmock
PUBLIC _SILENCE_TR1_NAMESPACE_DEPRECATION_WARNING=0)
PUBLIC _SILENCE_TR1_NAMESPACE_DEPRECATION_WARNING=1)
#------------------------------------------------------------------------------
# Build the actual library tests
set(TEST_MAIN_SRC test-main.cc gtest-extra.cc gtest-extra.h util.cc)
add_library(test-main STATIC ${TEST_MAIN_SRC})
target_compile_definitions(test-main PUBLIC
FMT_USE_FILE_DESCRIPTORS=$<BOOL:${HAVE_OPEN}>)
target_include_directories(test-main SYSTEM PUBLIC gtest gmock)
target_link_libraries(test-main gmock fmt)
@ -74,44 +77,53 @@ function(add_fmt_test name)
target_link_libraries(${name} test-main)
# Define if certain C++ features can be used.
target_compile_definitions(${name} PRIVATE
FMT_USE_TYPE_TRAITS=$<BOOL:${SUPPORTS_TYPE_TRAITS}>
FMT_USE_ENUM_BASE=$<BOOL:${SUPPORTS_ENUM_BASE}>)
if (FMT_PEDANTIC)
target_compile_options(${name} PRIVATE ${PEDANTIC_COMPILE_FLAGS})
endif ()
if (FMT_WERROR)
target_compile_options(${name} PRIVATE ${WERROR_FLAG})
endif ()
target_include_directories(${name} SYSTEM PUBLIC gtest gmock)
add_test(NAME ${name} COMMAND ${name})
endfunction()
add_fmt_test(assert-test)
add_fmt_test(chrono-test)
add_fmt_test(color-test)
add_fmt_test(core-test)
add_fmt_test(grisu-test)
target_compile_definitions(grisu-test PRIVATE FMT_USE_GRISU=1)
add_fmt_test(gtest-extra-test)
add_fmt_test(format-test mock-allocator.h)
if (MSVC)
target_compile_options(format-test PRIVATE /bigobj)
endif ()
if (NOT (MSVC AND BUILD_SHARED_LIBS))
add_fmt_test(format-impl-test)
endif ()
add_fmt_test(locale-test)
add_fmt_test(ostream-test)
add_fmt_test(compile-test)
add_fmt_test(printf-test)
add_fmt_test(time-test)
add_fmt_test(custom-formatter-test)
add_fmt_test(ranges-test)
add_fmt_test(scan-test)
if (HAVE_OPEN)
if (NOT MSVC_BUILD_STATIC)
add_fmt_executable(posix-mock-test
posix-mock-test.cc ../src/format.cc ${TEST_MAIN_SRC})
target_include_directories(
posix-mock-test PRIVATE ${PROJECT_SOURCE_DIR}/include)
target_compile_definitions(posix-mock-test PRIVATE FMT_USE_FILE_DESCRIPTORS=1)
target_link_libraries(posix-mock-test gmock)
target_include_directories(posix-mock-test SYSTEM PUBLIC gtest gmock)
if (FMT_PEDANTIC)
target_compile_options(posix-mock-test PRIVATE ${PEDANTIC_COMPILE_FLAGS})
endif ()
if (HAVE_STRTOD_L)
target_compile_definitions(posix-mock-test PRIVATE FMT_LOCALE)
endif ()
add_test(NAME posix-mock-test COMMAND posix-mock-test)
add_fmt_test(posix-test)
add_fmt_test(os-test)
endif ()
add_fmt_executable(header-only-test
@ -126,12 +138,21 @@ else ()
target_compile_definitions(header-only-test PRIVATE FMT_HEADER_ONLY=1)
endif ()
# Test that the library can be compiled with exceptions disabled.
# -fno-exception is broken in icc: https://github.com/fmtlib/fmt/issues/822.
if (NOT CMAKE_CXX_COMPILER_ID STREQUAL "Intel")
message(STATUS "FMT_PEDANTIC: ${FMT_PEDANTIC}")
if (FMT_PEDANTIC)
# MSVC fails to compile GMock when C++17 is enabled.
if (FMT_HAS_VARIANT AND NOT MSVC)
add_fmt_test(std-format-test)
set_property(TARGET std-format-test PROPERTY CXX_STANDARD 17)
endif ()
# Test that the library can be compiled with exceptions disabled.
# -fno-exception is broken in icc: https://github.com/fmtlib/fmt/issues/822.
if (NOT CMAKE_CXX_COMPILER_ID STREQUAL "Intel")
check_cxx_compiler_flag(-fno-exceptions HAVE_FNO_EXCEPTIONS_FLAG)
endif ()
if (HAVE_FNO_EXCEPTIONS_FLAG)
endif ()
if (HAVE_FNO_EXCEPTIONS_FLAG)
add_library(noexception-test ../src/format.cc)
target_include_directories(
noexception-test PRIVATE ${PROJECT_SOURCE_DIR}/include)
@ -139,28 +160,19 @@ if (HAVE_FNO_EXCEPTIONS_FLAG)
if (FMT_PEDANTIC)
target_compile_options(noexception-test PRIVATE ${PEDANTIC_COMPILE_FLAGS})
endif ()
target_include_directories(noexception-test SYSTEM PUBLIC gtest gmock)
endif ()
endif ()
message(STATUS "FMT_PEDANTIC: ${FMT_PEDANTIC}")
if (FMT_PEDANTIC)
# Test that the library compiles without windows.h.
if (CMAKE_SYSTEM_NAME STREQUAL "Windows")
add_library(no-windows-h-test ../src/format.cc)
# Test that the library compiles without locale.
add_library(nolocale-test ../src/format.cc)
target_include_directories(
no-windows-h-test PRIVATE ${PROJECT_SOURCE_DIR}/include)
target_compile_definitions(no-windows-h-test PRIVATE FMT_USE_WINDOWS_H=0)
if (FMT_PEDANTIC)
target_compile_options(no-windows-h-test PRIVATE ${PEDANTIC_COMPILE_FLAGS})
endif ()
target_include_directories(no-windows-h-test SYSTEM PUBLIC gtest gmock)
endif ()
nolocale-test PRIVATE ${PROJECT_SOURCE_DIR}/include)
target_compile_definitions(
nolocale-test PRIVATE FMT_STATIC_THOUSANDS_SEPARATOR=1)
add_test(compile-test ${CMAKE_CTEST_COMMAND}
add_test(compile-error-test ${CMAKE_CTEST_COMMAND}
--build-and-test
"${CMAKE_CURRENT_SOURCE_DIR}/compile-test"
"${CMAKE_CURRENT_BINARY_DIR}/compile-test"
"${CMAKE_CURRENT_SOURCE_DIR}/compile-error-test"
"${CMAKE_CURRENT_BINARY_DIR}/compile-error-test"
--build-generator ${CMAKE_GENERATOR}
--build-makeprogram ${CMAKE_MAKE_PROGRAM}
--build-options
@ -202,3 +214,23 @@ if (FMT_PEDANTIC AND NOT WIN32)
"-DPEDANTIC_COMPILE_FLAGS=${PEDANTIC_COMPILE_FLAGS}"
"-DCMAKE_BUILD_TYPE=${CMAKE_BUILD_TYPE}")
endif ()
# Activate optional CUDA tests if CUDA is found. For version selection see
# https://docs.nvidia.com/cuda/cuda-c-programming-guide/index.html#cpp14-language-features
if (FMT_CUDA_TEST)
if (${CMAKE_VERSION} VERSION_LESS 3.15)
find_package(CUDA 9.0)
else ()
include(CheckLanguage)
check_language(CUDA)
if (CMAKE_CUDA_COMPILER)
enable_language(CUDA OPTIONAL)
set(CUDA_FOUND TRUE)
endif ()
endif ()
if (CUDA_FOUND)
add_subdirectory(cuda-test)
add_test(NAME cuda-test COMMAND fmt-in-cuda-test)
endif ()
endif ()

View file

@ -8,15 +8,21 @@
#include "fmt/core.h"
#include "gtest.h"
#if GTEST_HAS_DEATH_TEST
# define EXPECT_DEBUG_DEATH_IF_SUPPORTED(statement, regex) \
EXPECT_DEBUG_DEATH(statement, regex)
#else
# define EXPECT_DEBUG_DEATH_IF_SUPPORTED(statement, regex) \
GTEST_UNSUPPORTED_DEATH_TEST_(statement, regex, )
#endif
TEST(AssertTest, Fail) {
EXPECT_DEBUG_DEATH_IF_SUPPORTED(
FMT_ASSERT(false, "don't panic!"), "don't panic!");
#if GTEST_HAS_DEATH_TEST
EXPECT_DEBUG_DEATH(FMT_ASSERT(false, "don't panic!"), "don't panic!");
#else
fmt::print("warning: death tests are not supported\n");
#endif
}
bool test_condition = false;
TEST(AssertTest, DanglingElse) {
bool executed_else = false;
if (test_condition)
FMT_ASSERT(true, "");
else
executed_else = true;
EXPECT_TRUE(executed_else);
}

View file

@ -5,6 +5,10 @@
//
// For the license information refer to format.h.
#ifdef WIN32
# define _CRT_SECURE_NO_WARNINGS
#endif
#include "fmt/chrono.h"
#include "gtest-extra.h"
@ -34,21 +38,71 @@ std::tm make_second(int s) {
return time;
}
std::string format_tm(const std::tm &time, const char *spec,
const std::locale &loc) {
auto &facet = std::use_facet<std::time_put<char>>(loc);
std::string format_tm(const std::tm& time, const char* spec,
const std::locale& loc) {
auto& facet = std::use_facet<std::time_put<char>>(loc);
std::ostringstream os;
os.imbue(loc);
facet.put(os, os, ' ', &time, spec, spec + std::strlen(spec));
return os.str();
}
#define EXPECT_TIME(spec, time, duration) { \
TEST(TimeTest, Format) {
std::tm tm = std::tm();
tm.tm_year = 116;
tm.tm_mon = 3;
tm.tm_mday = 25;
EXPECT_EQ("The date is 2016-04-25.",
fmt::format("The date is {:%Y-%m-%d}.", tm));
}
TEST(TimeTest, GrowBuffer) {
std::string s = "{:";
for (int i = 0; i < 30; ++i) s += "%c";
s += "}\n";
std::time_t t = std::time(nullptr);
fmt::format(s, *std::localtime(&t));
}
TEST(TimeTest, FormatToEmptyContainer) {
std::string s;
auto time = std::tm();
time.tm_sec = 42;
fmt::format_to(std::back_inserter(s), "{:%S}", time);
EXPECT_EQ(s, "42");
}
TEST(TimeTest, EmptyResult) { EXPECT_EQ("", fmt::format("{}", std::tm())); }
static bool EqualTime(const std::tm& lhs, const std::tm& rhs) {
return lhs.tm_sec == rhs.tm_sec && lhs.tm_min == rhs.tm_min &&
lhs.tm_hour == rhs.tm_hour && lhs.tm_mday == rhs.tm_mday &&
lhs.tm_mon == rhs.tm_mon && lhs.tm_year == rhs.tm_year &&
lhs.tm_wday == rhs.tm_wday && lhs.tm_yday == rhs.tm_yday &&
lhs.tm_isdst == rhs.tm_isdst;
}
TEST(TimeTest, LocalTime) {
std::time_t t = std::time(nullptr);
std::tm tm = *std::localtime(&t);
EXPECT_TRUE(EqualTime(tm, fmt::localtime(t)));
}
TEST(TimeTest, GMTime) {
std::time_t t = std::time(nullptr);
std::tm tm = *std::gmtime(&t);
EXPECT_TRUE(EqualTime(tm, fmt::gmtime(t)));
}
#define EXPECT_TIME(spec, time, duration) \
{ \
std::locale loc("ja_JP.utf8"); \
EXPECT_EQ(format_tm(time, spec, loc), \
fmt::format(loc, "{:" spec "}", duration)); \
}
#ifndef FMT_STATIC_THOUSANDS_SEPARATOR
TEST(ChronoTest, FormatDefault) {
EXPECT_EQ("42s", fmt::format("{}", std::chrono::seconds(42)));
EXPECT_EQ("42as",
@ -83,12 +137,54 @@ TEST(ChronoTest, FormatDefault) {
fmt::format("{}", std::chrono::duration<int, std::exa>(42)));
EXPECT_EQ("42m", fmt::format("{}", std::chrono::minutes(42)));
EXPECT_EQ("42h", fmt::format("{}", std::chrono::hours(42)));
EXPECT_EQ("42[15]s",
fmt::format("{}",
std::chrono::duration<int, std::ratio<15, 1>>(42)));
EXPECT_EQ("42[15/4]s",
fmt::format("{}",
std::chrono::duration<int, std::ratio<15, 4>>(42)));
EXPECT_EQ(
"42[15]s",
fmt::format("{}", std::chrono::duration<int, std::ratio<15, 1>>(42)));
EXPECT_EQ(
"42[15/4]s",
fmt::format("{}", std::chrono::duration<int, std::ratio<15, 4>>(42)));
}
TEST(ChronoTest, FormatWide) {
EXPECT_EQ(L"42s", fmt::format(L"{}", std::chrono::seconds(42)));
EXPECT_EQ(L"42as",
fmt::format(L"{}", std::chrono::duration<int, std::atto>(42)));
EXPECT_EQ(L"42fs",
fmt::format(L"{}", std::chrono::duration<int, std::femto>(42)));
EXPECT_EQ(L"42ps",
fmt::format(L"{}", std::chrono::duration<int, std::pico>(42)));
EXPECT_EQ(L"42ns", fmt::format(L"{}", std::chrono::nanoseconds(42)));
EXPECT_EQ(L"42\u00B5s", fmt::format(L"{}", std::chrono::microseconds(42)));
EXPECT_EQ(L"42ms", fmt::format(L"{}", std::chrono::milliseconds(42)));
EXPECT_EQ(L"42cs",
fmt::format(L"{}", std::chrono::duration<int, std::centi>(42)));
EXPECT_EQ(L"42ds",
fmt::format(L"{}", std::chrono::duration<int, std::deci>(42)));
EXPECT_EQ(L"42s", fmt::format(L"{}", std::chrono::seconds(42)));
EXPECT_EQ(L"42das",
fmt::format(L"{}", std::chrono::duration<int, std::deca>(42)));
EXPECT_EQ(L"42hs",
fmt::format(L"{}", std::chrono::duration<int, std::hecto>(42)));
EXPECT_EQ(L"42ks",
fmt::format(L"{}", std::chrono::duration<int, std::kilo>(42)));
EXPECT_EQ(L"42Ms",
fmt::format(L"{}", std::chrono::duration<int, std::mega>(42)));
EXPECT_EQ(L"42Gs",
fmt::format(L"{}", std::chrono::duration<int, std::giga>(42)));
EXPECT_EQ(L"42Ts",
fmt::format(L"{}", std::chrono::duration<int, std::tera>(42)));
EXPECT_EQ(L"42Ps",
fmt::format(L"{}", std::chrono::duration<int, std::peta>(42)));
EXPECT_EQ(L"42Es",
fmt::format(L"{}", std::chrono::duration<int, std::exa>(42)));
EXPECT_EQ(L"42m", fmt::format(L"{}", std::chrono::minutes(42)));
EXPECT_EQ(L"42h", fmt::format(L"{}", std::chrono::hours(42)));
EXPECT_EQ(
L"42[15]s",
fmt::format(L"{}", std::chrono::duration<int, std::ratio<15, 1>>(42)));
EXPECT_EQ(
L"42[15/4]s",
fmt::format(L"{}", std::chrono::duration<int, std::ratio<15, 4>>(42)));
}
TEST(ChronoTest, Align) {
@ -103,7 +199,8 @@ TEST(ChronoTest, Align) {
fmt::format("{:>12%H:%M:%S}", std::chrono::seconds(12345)));
EXPECT_EQ("~~03:25:45~~",
fmt::format("{:~^12%H:%M:%S}", std::chrono::seconds(12345)));
EXPECT_EQ("03:25:45 ",
fmt::format("{:{}%H:%M:%S}", std::chrono::seconds(12345), 12));
}
TEST(ChronoTest, FormatSpecs) {
@ -131,6 +228,8 @@ TEST(ChronoTest, FormatSpecs) {
fmt::format("{:%H:%M:%S}", std::chrono::seconds(12345)));
EXPECT_EQ("03:25", fmt::format("{:%R}", std::chrono::seconds(12345)));
EXPECT_EQ("03:25:45", fmt::format("{:%T}", std::chrono::seconds(12345)));
EXPECT_EQ("12345", fmt::format("{:%Q}", std::chrono::seconds(12345)));
EXPECT_EQ("s", fmt::format("{:%q}", std::chrono::seconds(12345)));
}
TEST(ChronoTest, InvalidSpecs) {
@ -151,8 +250,6 @@ TEST(ChronoTest, InvalidSpecs) {
EXPECT_THROW_MSG(fmt::format("{:%B}", sec), fmt::format_error, "no date");
EXPECT_THROW_MSG(fmt::format("{:%z}", sec), fmt::format_error, "no date");
EXPECT_THROW_MSG(fmt::format("{:%Z}", sec), fmt::format_error, "no date");
EXPECT_THROW_MSG(fmt::format("{:%q}", sec), fmt::format_error,
"invalid format");
EXPECT_THROW_MSG(fmt::format("{:%Eq}", sec), fmt::format_error,
"invalid format");
EXPECT_THROW_MSG(fmt::format("{:%Oq}", sec), fmt::format_error,
@ -160,13 +257,14 @@ TEST(ChronoTest, InvalidSpecs) {
}
TEST(ChronoTest, Locale) {
const char *loc_name = "ja_JP.utf8";
const char* loc_name = "ja_JP.utf8";
bool has_locale = false;
std::locale loc;
try {
loc = std::locale(loc_name);
has_locale = true;
} catch (const std::runtime_error &) {}
} catch (const std::runtime_error&) {
}
if (!has_locale) {
fmt::print("{} locale is missing.\n", loc_name);
return;
@ -183,3 +281,106 @@ TEST(ChronoTest, Locale) {
EXPECT_TIME("%r", time, sec);
EXPECT_TIME("%p", time, sec);
}
typedef std::chrono::duration<double, std::milli> dms;
TEST(ChronoTest, FormatDefaultFP) {
typedef std::chrono::duration<float> fs;
EXPECT_EQ("1.234s", fmt::format("{}", fs(1.234)));
typedef std::chrono::duration<float, std::milli> fms;
EXPECT_EQ("1.234ms", fmt::format("{}", fms(1.234)));
typedef std::chrono::duration<double> ds;
EXPECT_EQ("1.234s", fmt::format("{}", ds(1.234)));
EXPECT_EQ("1.234ms", fmt::format("{}", dms(1.234)));
}
TEST(ChronoTest, FormatPrecision) {
EXPECT_THROW_MSG(fmt::format("{:.2}", std::chrono::seconds(42)),
fmt::format_error,
"precision not allowed for this argument type");
EXPECT_EQ("1.2ms", fmt::format("{:.1}", dms(1.234)));
EXPECT_EQ("1.23ms", fmt::format("{:.{}}", dms(1.234), 2));
}
TEST(ChronoTest, FormatFullSpecs) {
EXPECT_EQ("1.2ms ", fmt::format("{:6.1}", dms(1.234)));
EXPECT_EQ(" 1.23ms", fmt::format("{:>8.{}}", dms(1.234), 2));
EXPECT_EQ(" 1.2ms ", fmt::format("{:^{}.{}}", dms(1.234), 7, 1));
EXPECT_EQ(" 1.23ms ", fmt::format("{0:^{2}.{1}}", dms(1.234), 2, 8));
EXPECT_EQ("=1.234ms=", fmt::format("{:=^{}.{}}", dms(1.234), 9, 3));
EXPECT_EQ("*1.2340ms*", fmt::format("{:*^10.4}", dms(1.234)));
}
TEST(ChronoTest, FormatSimpleQq) {
typedef std::chrono::duration<float> fs;
EXPECT_EQ("1.234 s", fmt::format("{:%Q %q}", fs(1.234)));
typedef std::chrono::duration<float, std::milli> fms;
EXPECT_EQ("1.234 ms", fmt::format("{:%Q %q}", fms(1.234)));
typedef std::chrono::duration<double> ds;
EXPECT_EQ("1.234 s", fmt::format("{:%Q %q}", ds(1.234)));
EXPECT_EQ("1.234 ms", fmt::format("{:%Q %q}", dms(1.234)));
}
TEST(ChronoTest, FormatPrecisionQq) {
EXPECT_THROW_MSG(fmt::format("{:.2%Q %q}", std::chrono::seconds(42)),
fmt::format_error,
"precision not allowed for this argument type");
EXPECT_EQ("1.2 ms", fmt::format("{:.1%Q %q}", dms(1.234)));
EXPECT_EQ("1.23 ms", fmt::format("{:.{}%Q %q}", dms(1.234), 2));
}
TEST(ChronoTest, FormatFullSpecsQq) {
EXPECT_EQ("1.2 ms ", fmt::format("{:7.1%Q %q}", dms(1.234)));
EXPECT_EQ(" 1.23 ms", fmt::format("{:>8.{}%Q %q}", dms(1.234), 2));
EXPECT_EQ(" 1.2 ms ", fmt::format("{:^{}.{}%Q %q}", dms(1.234), 8, 1));
EXPECT_EQ(" 1.23 ms ", fmt::format("{0:^{2}.{1}%Q %q}", dms(1.234), 2, 9));
EXPECT_EQ("=1.234 ms=", fmt::format("{:=^{}.{}%Q %q}", dms(1.234), 10, 3));
EXPECT_EQ("*1.2340 ms*", fmt::format("{:*^11.4%Q %q}", dms(1.234)));
}
TEST(ChronoTest, InvalidWidthId) {
EXPECT_THROW(fmt::format("{:{o}", std::chrono::seconds(0)),
fmt::format_error);
}
TEST(ChronoTest, InvalidColons) {
EXPECT_THROW(fmt::format("{0}=:{0::", std::chrono::seconds(0)),
fmt::format_error);
}
TEST(ChronoTest, NegativeDurations) {
EXPECT_EQ("-12345", fmt::format("{:%Q}", std::chrono::seconds(-12345)));
EXPECT_EQ("-03:25:45",
fmt::format("{:%H:%M:%S}", std::chrono::seconds(-12345)));
EXPECT_EQ("-00:01",
fmt::format("{:%M:%S}", std::chrono::duration<double>(-1)));
EXPECT_EQ("s", fmt::format("{:%q}", std::chrono::seconds(-12345)));
EXPECT_EQ("-00.127",
fmt::format("{:%S}",
std::chrono::duration<signed char, std::milli>{-127}));
auto min = std::numeric_limits<int>::min();
EXPECT_EQ(fmt::format("{}", min),
fmt::format("{:%Q}", std::chrono::duration<int>(min)));
}
TEST(ChronoTest, SpecialDurations) {
EXPECT_EQ(
"40.",
fmt::format("{:%S}", std::chrono::duration<double>(1e20)).substr(0, 3));
auto nan = std::numeric_limits<double>::quiet_NaN();
EXPECT_EQ(
"nan nan nan nan nan:nan nan",
fmt::format("{:%I %H %M %S %R %r}", std::chrono::duration<double>(nan)));
fmt::format("{:%S}",
std::chrono::duration<float, std::atto>(1.79400457e+31f));
EXPECT_EQ(fmt::format("{}", std::chrono::duration<float, std::exa>(1)),
"1Es");
EXPECT_EQ(fmt::format("{}", std::chrono::duration<float, std::atto>(1)),
"1as");
EXPECT_EQ(fmt::format("{:%R}", std::chrono::duration<char, std::mega>{2}),
"03:33");
EXPECT_EQ(fmt::format("{:%T}", std::chrono::duration<char, std::mega>{2}),
"03:33:20");
}
#endif // FMT_STATIC_THOUSANDS_SEPARATOR

85
test/color-test.cc Normal file
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@ -0,0 +1,85 @@
// Formatting library for C++ - color tests
//
// Copyright (c) 2012 - present, Victor Zverovich
// All rights reserved.
//
// For the license information refer to format.h.
#include "fmt/color.h"
#include "gtest-extra.h"
TEST(ColorsTest, ColorsPrint) {
EXPECT_WRITE(stdout, fmt::print(fg(fmt::rgb(255, 20, 30)), "rgb(255,20,30)"),
"\x1b[38;2;255;020;030mrgb(255,20,30)\x1b[0m");
EXPECT_WRITE(stdout, fmt::print(fg(fmt::color::blue), "blue"),
"\x1b[38;2;000;000;255mblue\x1b[0m");
EXPECT_WRITE(
stdout,
fmt::print(fg(fmt::color::blue) | bg(fmt::color::red), "two color"),
"\x1b[38;2;000;000;255m\x1b[48;2;255;000;000mtwo color\x1b[0m");
EXPECT_WRITE(stdout, fmt::print(fmt::emphasis::bold, "bold"),
"\x1b[1mbold\x1b[0m");
EXPECT_WRITE(stdout, fmt::print(fmt::emphasis::italic, "italic"),
"\x1b[3mitalic\x1b[0m");
EXPECT_WRITE(stdout, fmt::print(fmt::emphasis::underline, "underline"),
"\x1b[4munderline\x1b[0m");
EXPECT_WRITE(stdout,
fmt::print(fmt::emphasis::strikethrough, "strikethrough"),
"\x1b[9mstrikethrough\x1b[0m");
EXPECT_WRITE(
stdout,
fmt::print(fg(fmt::color::blue) | fmt::emphasis::bold, "blue/bold"),
"\x1b[1m\x1b[38;2;000;000;255mblue/bold\x1b[0m");
EXPECT_WRITE(stderr, fmt::print(stderr, fmt::emphasis::bold, "bold error"),
"\x1b[1mbold error\x1b[0m");
EXPECT_WRITE(stderr, fmt::print(stderr, fg(fmt::color::blue), "blue log"),
"\x1b[38;2;000;000;255mblue log\x1b[0m");
EXPECT_WRITE(stdout, fmt::print(fmt::text_style(), "hi"), "hi");
EXPECT_WRITE(stdout, fmt::print(fg(fmt::terminal_color::red), "tred"),
"\x1b[31mtred\x1b[0m");
EXPECT_WRITE(stdout, fmt::print(bg(fmt::terminal_color::cyan), "tcyan"),
"\x1b[46mtcyan\x1b[0m");
EXPECT_WRITE(stdout,
fmt::print(fg(fmt::terminal_color::bright_green), "tbgreen"),
"\x1b[92mtbgreen\x1b[0m");
EXPECT_WRITE(stdout,
fmt::print(bg(fmt::terminal_color::bright_magenta), "tbmagenta"),
"\x1b[105mtbmagenta\x1b[0m");
}
TEST(ColorsTest, Format) {
EXPECT_EQ(fmt::format(fg(fmt::rgb(255, 20, 30)), "rgb(255,20,30)"),
"\x1b[38;2;255;020;030mrgb(255,20,30)\x1b[0m");
EXPECT_EQ(fmt::format(fg(fmt::rgb(255, 20, 30)), L"rgb(255,20,30) wide"),
L"\x1b[38;2;255;020;030mrgb(255,20,30) wide\x1b[0m");
EXPECT_EQ(fmt::format(fg(fmt::color::blue), "blue"),
"\x1b[38;2;000;000;255mblue\x1b[0m");
EXPECT_EQ(
fmt::format(fg(fmt::color::blue) | bg(fmt::color::red), "two color"),
"\x1b[38;2;000;000;255m\x1b[48;2;255;000;000mtwo color\x1b[0m");
EXPECT_EQ(fmt::format(fmt::emphasis::bold, "bold"), "\x1b[1mbold\x1b[0m");
EXPECT_EQ(fmt::format(fmt::emphasis::italic, "italic"),
"\x1b[3mitalic\x1b[0m");
EXPECT_EQ(fmt::format(fmt::emphasis::underline, "underline"),
"\x1b[4munderline\x1b[0m");
EXPECT_EQ(fmt::format(fmt::emphasis::strikethrough, "strikethrough"),
"\x1b[9mstrikethrough\x1b[0m");
EXPECT_EQ(
fmt::format(fg(fmt::color::blue) | fmt::emphasis::bold, "blue/bold"),
"\x1b[1m\x1b[38;2;000;000;255mblue/bold\x1b[0m");
EXPECT_EQ(fmt::format(fmt::emphasis::bold, "bold error"),
"\x1b[1mbold error\x1b[0m");
EXPECT_EQ(fmt::format(fg(fmt::color::blue), "blue log"),
"\x1b[38;2;000;000;255mblue log\x1b[0m");
EXPECT_EQ(fmt::format(fmt::text_style(), "hi"), "hi");
EXPECT_EQ(fmt::format(fg(fmt::terminal_color::red), "tred"),
"\x1b[31mtred\x1b[0m");
EXPECT_EQ(fmt::format(bg(fmt::terminal_color::cyan), "tcyan"),
"\x1b[46mtcyan\x1b[0m");
EXPECT_EQ(fmt::format(fg(fmt::terminal_color::bright_green), "tbgreen"),
"\x1b[92mtbgreen\x1b[0m");
EXPECT_EQ(fmt::format(bg(fmt::terminal_color::bright_magenta), "tbmagenta"),
"\x1b[105mtbmagenta\x1b[0m");
EXPECT_EQ(fmt::format(fg(fmt::terminal_color::red), "{}", "foo"),
"\x1b[31mfoo\x1b[0m");
}

143
test/compile-test.cc Normal file
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@ -0,0 +1,143 @@
// Formatting library for C++ - formatting library tests
//
// Copyright (c) 2012 - present, Victor Zverovich
// All rights reserved.
//
// For the license information refer to format.h.
#include <stdint.h>
#include <cctype>
#include <cfloat>
#include <climits>
#include <cmath>
#include <cstring>
#include <deque>
#include <list>
#include <memory>
#include <string>
// Check if fmt/compile.h compiles with windows.h included before it.
#ifdef _WIN32
# include <windows.h>
#endif
#include "fmt/compile.h"
#include "gmock.h"
#include "gtest-extra.h"
#include "mock-allocator.h"
#include "util.h"
#undef ERROR
#undef min
#undef max
using testing::Return;
using testing::StrictMock;
// compiletime_prepared_parts_type_provider is useful only with relaxed
// constexpr.
#if FMT_USE_CONSTEXPR
template <unsigned EXPECTED_PARTS_COUNT, typename Format>
void check_prepared_parts_type(Format format) {
typedef fmt::internal::compiled_format_base<decltype(format)> provider;
typedef fmt::internal::format_part<char>
expected_parts_type[EXPECTED_PARTS_COUNT];
static_assert(std::is_same<typename provider::parts_container,
expected_parts_type>::value,
"CompileTimePreparedPartsTypeProvider test failed");
}
TEST(CompileTest, CompileTimePreparedPartsTypeProvider) {
check_prepared_parts_type<1u>(FMT_STRING("text"));
check_prepared_parts_type<1u>(FMT_STRING("{}"));
check_prepared_parts_type<2u>(FMT_STRING("text{}"));
check_prepared_parts_type<2u>(FMT_STRING("{}text"));
check_prepared_parts_type<3u>(FMT_STRING("text{}text"));
check_prepared_parts_type<3u>(FMT_STRING("{:{}.{}} {:{}}"));
check_prepared_parts_type<3u>(FMT_STRING("{{{}}}")); // '{', 'argument', '}'
check_prepared_parts_type<2u>(FMT_STRING("text{{")); // 'text', '{'
check_prepared_parts_type<3u>(FMT_STRING("text{{ ")); // 'text', '{', ' '
check_prepared_parts_type<2u>(FMT_STRING("}}text")); // '}', text
check_prepared_parts_type<2u>(FMT_STRING("text}}text")); // 'text}', 'text'
check_prepared_parts_type<4u>(
FMT_STRING("text{{}}text")); // 'text', '{', '}', 'text'
}
#endif
TEST(CompileTest, PassStringLiteralFormat) {
const auto prepared = fmt::compile<int>("test {}");
EXPECT_EQ("test 42", fmt::format(prepared, 42));
const auto wprepared = fmt::compile<int>(L"test {}");
EXPECT_EQ(L"test 42", fmt::format(wprepared, 42));
}
#if FMT_USE_CONSTEXPR
TEST(CompileTest, PassCompileString) {
const auto prepared = fmt::compile<int>(FMT_STRING("test {}"));
EXPECT_EQ("test 42", fmt::format(prepared, 42));
const auto wprepared = fmt::compile<int>(FMT_STRING(L"test {}"));
EXPECT_EQ(L"test 42", fmt::format(wprepared, 42));
}
#endif
TEST(CompileTest, FormatToArrayOfChars) {
char buffer[32] = {0};
const auto prepared = fmt::compile<int>("4{}");
fmt::format_to(fmt::internal::make_checked(buffer, 32), prepared, 2);
EXPECT_EQ(std::string("42"), buffer);
wchar_t wbuffer[32] = {0};
const auto wprepared = fmt::compile<int>(L"4{}");
fmt::format_to(fmt::internal::make_checked(wbuffer, 32), wprepared, 2);
EXPECT_EQ(std::wstring(L"42"), wbuffer);
}
TEST(CompileTest, FormatToIterator) {
std::string s(2, ' ');
const auto prepared = fmt::compile<int>("4{}");
fmt::format_to(s.begin(), prepared, 2);
EXPECT_EQ("42", s);
std::wstring ws(2, L' ');
const auto wprepared = fmt::compile<int>(L"4{}");
fmt::format_to(ws.begin(), wprepared, 2);
EXPECT_EQ(L"42", ws);
}
TEST(CompileTest, FormatToN) {
char buf[5];
auto f = fmt::compile<int>("{:10}");
auto result = fmt::format_to_n(buf, 5, f, 42);
EXPECT_EQ(result.size, 10);
EXPECT_EQ(result.out, buf + 5);
EXPECT_EQ(fmt::string_view(buf, 5), " ");
}
TEST(CompileTest, FormattedSize) {
auto f = fmt::compile<int>("{:10}");
EXPECT_EQ(fmt::formatted_size(f, 42), 10);
}
TEST(CompileTest, MultipleTypes) {
auto f = fmt::compile<int, int>("{} {}");
EXPECT_EQ(fmt::format(f, 42, 42), "42 42");
}
struct formattable {};
FMT_BEGIN_NAMESPACE
template <> struct formatter<formattable> : formatter<const char*> {
auto format(formattable, format_context& ctx) -> decltype(ctx.out()) {
return formatter<const char*>::format("foo", ctx);
}
};
FMT_END_NAMESPACE
TEST(CompileTest, FormatUserDefinedType) {
auto f = fmt::compile<formattable>("{}");
EXPECT_EQ(fmt::format(f, formattable()), "foo");
}
TEST(CompileTest, EmptyFormatString) {
auto f = fmt::compile<>("");
EXPECT_EQ(fmt::format(f), "");
}

View file

@ -11,13 +11,12 @@
#include <functional>
#include <iterator>
#include <limits>
#include <memory>
#include <string>
#include <type_traits>
#include <memory>
#include "test-assert.h"
#include "gmock.h"
#include "test-assert.h"
// Check if fmt/core.h compiles with windows.h included before it.
#ifdef _WIN32
@ -30,9 +29,9 @@
#undef max
using fmt::basic_format_arg;
using fmt::internal::basic_buffer;
using fmt::internal::value;
using fmt::string_view;
using fmt::internal::buffer;
using fmt::internal::value;
using testing::_;
using testing::StrictMock;
@ -42,24 +41,23 @@ namespace {
struct test_struct {};
template <typename Context, typename T>
basic_format_arg<Context> make_arg(const T &value) {
basic_format_arg<Context> make_arg(const T& value) {
return fmt::internal::make_arg<Context>(value);
}
} // namespace
FMT_BEGIN_NAMESPACE
template <typename Char>
struct formatter<test_struct, Char> {
template <typename Char> struct formatter<test_struct, Char> {
template <typename ParseContext>
auto parse(ParseContext &ctx) -> decltype(ctx.begin()) {
auto parse(ParseContext& ctx) -> decltype(ctx.begin()) {
return ctx.begin();
}
typedef std::back_insert_iterator<basic_buffer<Char>> iterator;
typedef std::back_insert_iterator<buffer<Char>> iterator;
auto format(test_struct, basic_format_context<iterator, char> &ctx)
auto format(test_struct, basic_format_context<iterator, char>& ctx)
-> decltype(ctx.out()) {
const Char *test = "test";
const Char* test = "test";
return std::copy_n(test, std::strlen(test), ctx.out());
}
};
@ -67,31 +65,29 @@ FMT_END_NAMESPACE
#if !FMT_GCC_VERSION || FMT_GCC_VERSION >= 470
TEST(BufferTest, Noncopyable) {
EXPECT_FALSE(std::is_copy_constructible<basic_buffer<char> >::value);
#if !FMT_MSC_VER
EXPECT_FALSE(std::is_copy_constructible<buffer<char>>::value);
# if !FMT_MSC_VER
// std::is_copy_assignable is broken in MSVC2013.
EXPECT_FALSE(std::is_copy_assignable<basic_buffer<char> >::value);
#endif
EXPECT_FALSE(std::is_copy_assignable<buffer<char>>::value);
# endif
}
TEST(BufferTest, Nonmoveable) {
EXPECT_FALSE(std::is_move_constructible<basic_buffer<char> >::value);
#if !FMT_MSC_VER
EXPECT_FALSE(std::is_move_constructible<buffer<char>>::value);
# if !FMT_MSC_VER
// std::is_move_assignable is broken in MSVC2013.
EXPECT_FALSE(std::is_move_assignable<basic_buffer<char> >::value);
#endif
EXPECT_FALSE(std::is_move_assignable<buffer<char>>::value);
# endif
}
#endif
// A test buffer with a dummy grow method.
template <typename T>
struct test_buffer : basic_buffer<T> {
void grow(std::size_t capacity) { this->set(FMT_NULL, capacity); }
template <typename T> struct test_buffer : buffer<T> {
void grow(std::size_t capacity) { this->set(nullptr, capacity); }
};
template <typename T>
struct mock_buffer : basic_buffer<T> {
MOCK_METHOD1(do_grow, void (std::size_t capacity));
template <typename T> struct mock_buffer : buffer<T> {
MOCK_METHOD1(do_grow, void(std::size_t capacity));
void grow(std::size_t capacity) {
this->set(this->data(), capacity);
@ -99,14 +95,14 @@ struct mock_buffer : basic_buffer<T> {
}
mock_buffer() {}
mock_buffer(T *data) { this->set(data, 0); }
mock_buffer(T *data, std::size_t capacity) { this->set(data, capacity); }
mock_buffer(T* data) { this->set(data, 0); }
mock_buffer(T* data, std::size_t capacity) { this->set(data, capacity); }
};
TEST(BufferTest, Ctor) {
{
mock_buffer<int> buffer;
EXPECT_EQ(FMT_NULL, &buffer[0]);
EXPECT_EQ(nullptr, buffer.data());
EXPECT_EQ(static_cast<size_t>(0), buffer.size());
EXPECT_EQ(static_cast<size_t>(0), buffer.capacity());
}
@ -130,13 +126,18 @@ TEST(BufferTest, Ctor) {
struct dying_buffer : test_buffer<int> {
MOCK_METHOD0(die, void());
~dying_buffer() { die(); }
private:
virtual void avoid_weak_vtable();
};
void dying_buffer::avoid_weak_vtable() {}
TEST(BufferTest, VirtualDtor) {
typedef StrictMock<dying_buffer> stict_mock_buffer;
stict_mock_buffer *mock_buffer = new stict_mock_buffer();
stict_mock_buffer* mock_buffer = new stict_mock_buffer();
EXPECT_CALL(*mock_buffer, die());
basic_buffer<int> *buffer = mock_buffer;
buffer<int>* buffer = mock_buffer;
delete buffer;
}
@ -147,7 +148,7 @@ TEST(BufferTest, Access) {
EXPECT_EQ(11, buffer[0]);
buffer[3] = 42;
EXPECT_EQ(42, *(&buffer[0] + 3));
const basic_buffer<char> &const_buffer = buffer;
const fmt::internal::buffer<char>& const_buffer = buffer;
EXPECT_EQ(42, const_buffer[3]);
}
@ -182,7 +183,7 @@ TEST(BufferTest, Clear) {
TEST(BufferTest, Append) {
char data[15];
mock_buffer<char> buffer(data, 10);
const char *test = "test";
const char* test = "test";
buffer.append(test, test + 5);
EXPECT_STREQ(test, &buffer[0]);
EXPECT_EQ(5u, buffer.size());
@ -197,7 +198,7 @@ TEST(BufferTest, Append) {
TEST(BufferTest, AppendAllocatesEnoughStorage) {
char data[19];
mock_buffer<char> buffer(data, 10);
const char *test = "abcdefgh";
const char* test = "abcdefgh";
buffer.resize(10);
EXPECT_CALL(buffer, do_grow(19));
buffer.append(test, test + 9);
@ -211,35 +212,31 @@ TEST(ArgTest, FormatArgs) {
struct custom_context {
typedef char char_type;
template <typename T>
struct formatter_type {
struct type {
template <typename T> struct formatter_type {
template <typename ParseContext>
auto parse(ParseContext &ctx) -> decltype(ctx.begin()) {
auto parse(ParseContext& ctx) -> decltype(ctx.begin()) {
return ctx.begin();
}
const char *format(const T &, custom_context& ctx) {
const char* format(const T&, custom_context& ctx) {
ctx.called = true;
return FMT_NULL;
return nullptr;
}
};
};
bool called;
fmt::format_parse_context ctx;
fmt::format_parse_context parse_context() {
return fmt::format_parse_context("");
}
void advance_to(const char *) {}
fmt::format_parse_context& parse_context() { return ctx; }
void advance_to(const char*) {}
};
TEST(ArgTest, MakeValueWithCustomContext) {
test_struct t;
fmt::internal::value<custom_context> arg =
fmt::internal::make_value<custom_context>(t);
custom_context ctx = {false};
arg.custom.format(&t, ctx);
fmt::internal::value<custom_context> arg(
fmt::internal::arg_mapper<custom_context>().map(t));
custom_context ctx = {false, fmt::format_parse_context("")};
arg.custom.format(&t, ctx.parse_context(), ctx);
EXPECT_TRUE(ctx.called);
}
@ -249,40 +246,35 @@ template <typename Char>
bool operator==(custom_value<Char> lhs, custom_value<Char> rhs) {
return lhs.value == rhs.value;
}
}
} // namespace internal
FMT_END_NAMESPACE
// Use a unique result type to make sure that there are no undesirable
// conversions.
struct test_result {};
template <typename T>
struct mock_visitor {
template <typename U>
struct result { typedef test_result type; };
template <typename T> struct mock_visitor {
template <typename U> struct result { typedef test_result type; };
mock_visitor() {
ON_CALL(*this, visit(_)).WillByDefault(testing::Return(test_result()));
}
MOCK_METHOD1_T(visit, test_result (T value));
MOCK_METHOD0_T(unexpected, void ());
MOCK_METHOD1_T(visit, test_result(T value));
MOCK_METHOD0_T(unexpected, void());
test_result operator()(T value) { return visit(value); }
template <typename U>
test_result operator()(U) {
template <typename U> test_result operator()(U) {
unexpected();
return test_result();
}
};
template <typename T>
struct visit_type { typedef T Type; };
template <typename T> struct visit_type { typedef T Type; };
#define VISIT_TYPE(Type_, visit_type_) \
template <> \
struct visit_type<Type_> { typedef visit_type_ Type; }
template <> struct visit_type<Type_> { typedef visit_type_ Type; }
VISIT_TYPE(signed char, int);
VISIT_TYPE(unsigned char, unsigned);
@ -297,30 +289,30 @@ VISIT_TYPE(long, long long);
VISIT_TYPE(unsigned long, unsigned long long);
#endif
VISIT_TYPE(float, double);
#define CHECK_ARG_(Char, expected, value) { \
#define CHECK_ARG_(Char, expected, value) \
{ \
testing::StrictMock<mock_visitor<decltype(expected)>> visitor; \
EXPECT_CALL(visitor, visit(expected)); \
typedef std::back_insert_iterator<basic_buffer<Char>> iterator; \
fmt::visit(visitor, \
make_arg<fmt::basic_format_context<iterator, Char>>(value)); \
}
typedef std::back_insert_iterator<buffer<Char>> iterator; \
fmt::visit_format_arg( \
visitor, make_arg<fmt::basic_format_context<iterator, Char>>(value)); \
}
#define CHECK_ARG(value, typename_) { \
#define CHECK_ARG(value, typename_) \
{ \
typedef decltype(value) value_type; \
typename_ visit_type<value_type>::Type expected = value; \
CHECK_ARG_(char, expected, value) \
CHECK_ARG_(wchar_t, expected, value) \
}
}
template <typename T>
class NumericArgTest : public testing::Test {};
template <typename T> class NumericArgTest : public testing::Test {};
typedef ::testing::Types<
bool, signed char, unsigned char, signed, unsigned short,
int, unsigned, long, unsigned long, long long, unsigned long long,
float, double, long double> Types;
typedef ::testing::Types<bool, signed char, unsigned char, signed,
unsigned short, int, unsigned, long, unsigned long,
long long, unsigned long long, float, double,
long double>
Types;
TYPED_TEST_CASE(NumericArgTest, Types);
template <typename T>
@ -330,7 +322,7 @@ typename std::enable_if<std::is_integral<T>::value, T>::type test_value() {
template <typename T>
typename std::enable_if<std::is_floating_point<T>::value, T>::type
test_value() {
test_value() {
return static_cast<T>(4.2);
}
@ -348,8 +340,8 @@ TEST(ArgTest, CharArg) {
TEST(ArgTest, StringArg) {
char str_data[] = "test";
char *str = str_data;
const char *cstr = str;
char* str = str_data;
const char* cstr = str;
CHECK_ARG_(char, cstr, str);
string_view sref(str);
@ -358,8 +350,8 @@ TEST(ArgTest, StringArg) {
TEST(ArgTest, WStringArg) {
wchar_t str_data[] = L"test";
wchar_t *str = str_data;
const wchar_t *cstr = str;
wchar_t* str = str_data;
const wchar_t* cstr = str;
fmt::wstring_view sref(str);
CHECK_ARG_(wchar_t, cstr, str);
@ -369,8 +361,8 @@ TEST(ArgTest, WStringArg) {
}
TEST(ArgTest, PointerArg) {
void *p = FMT_NULL;
const void *cp = FMT_NULL;
void* p = nullptr;
const void* cp = nullptr;
CHECK_ARG_(char, cp, p);
CHECK_ARG_(wchar_t, cp, p);
CHECK_ARG(cp, );
@ -379,14 +371,15 @@ TEST(ArgTest, PointerArg) {
struct check_custom {
test_result operator()(
fmt::basic_format_arg<fmt::format_context>::handle h) const {
struct test_buffer : fmt::internal::basic_buffer<char> {
struct test_buffer : fmt::internal::buffer<char> {
char data[10];
test_buffer() : fmt::internal::basic_buffer<char>(data, 0, 10) {}
test_buffer() : fmt::internal::buffer<char>(data, 0, 10) {}
void grow(std::size_t) {}
} buffer;
fmt::internal::basic_buffer<char> &base = buffer;
fmt::format_context ctx(std::back_inserter(base), "", fmt::format_args());
h.format(ctx);
fmt::internal::buffer<char>& base = buffer;
fmt::format_parse_context parse_ctx("");
fmt::format_context ctx(std::back_inserter(base), fmt::format_args());
h.format(parse_ctx, ctx);
EXPECT_EQ("test", std::string(buffer.data, buffer.size()));
return test_result();
}
@ -398,27 +391,132 @@ TEST(ArgTest, CustomArg) {
visitor;
testing::StrictMock<visitor> v;
EXPECT_CALL(v, visit(_)).WillOnce(testing::Invoke(check_custom()));
fmt::visit(v, make_arg<fmt::format_context>(test));
fmt::visit_format_arg(v, make_arg<fmt::format_context>(test));
}
TEST(ArgTest, VisitInvalidArg) {
testing::StrictMock< mock_visitor<fmt::monostate> > visitor;
testing::StrictMock<mock_visitor<fmt::monostate>> visitor;
EXPECT_CALL(visitor, visit(_));
fmt::basic_format_arg<fmt::format_context> arg;
visit(visitor, arg);
fmt::visit_format_arg(visitor, arg);
}
TEST(FormatDynArgsTest, Basic) {
fmt::dynamic_format_arg_store<fmt::format_context> store;
store.push_back(42);
store.push_back("abc1");
store.push_back(1.5f);
std::string result = fmt::vformat("{} and {} and {}", store);
EXPECT_EQ("42 and abc1 and 1.5", result);
}
TEST(FormatDynArgsTest, StringsAndRefs) {
// Unfortunately the tests are compiled with old ABI so strings use COW.
fmt::dynamic_format_arg_store<fmt::format_context> store;
char str[] = "1234567890";
store.push_back(str);
store.push_back(std::cref(str));
store.push_back(fmt::string_view{str});
str[0] = 'X';
std::string result = fmt::vformat("{} and {} and {}", store);
EXPECT_EQ("1234567890 and X234567890 and X234567890", result);
}
struct custom_type {
int i = 0;
};
FMT_BEGIN_NAMESPACE
template <> struct formatter<custom_type> {
auto parse(format_parse_context& ctx) const -> decltype(ctx.begin()) {
return ctx.begin();
}
template <typename FormatContext>
auto format(const custom_type& p, FormatContext& ctx) -> decltype(ctx.out()) {
return format_to(ctx.out(), "cust={}", p.i);
}
};
FMT_END_NAMESPACE
TEST(FormatDynArgsTest, CustomFormat) {
fmt::dynamic_format_arg_store<fmt::format_context> store;
custom_type c{};
store.push_back(c);
++c.i;
store.push_back(c);
++c.i;
store.push_back(std::cref(c));
++c.i;
std::string result = fmt::vformat("{} and {} and {}", store);
EXPECT_EQ("cust=0 and cust=1 and cust=3", result);
}
TEST(FormatDynArgsTest, NamedArgByRef) {
fmt::dynamic_format_arg_store<fmt::format_context> store;
// Note: fmt::arg() constructs an object which holds a reference
// to its value. It's not an aggregate, so it doesn't extend the
// reference lifetime. As a result, it's a very bad idea passing temporary
// as a named argument value. Only GCC with optimization level >0
// complains about this.
//
// A real life usecase is when you have both name and value alive
// guarantee their lifetime and thus don't want them to be copied into
// storages.
int a1_val{42};
auto a1 = fmt::arg("a1_", a1_val);
store.push_back(std::cref(a1));
std::string result = fmt::vformat("{a1_}", // and {} and {}",
store);
EXPECT_EQ("42", result);
}
struct copy_throwable {
copy_throwable() {}
copy_throwable(const copy_throwable&) { throw "deal with it"; }
};
FMT_BEGIN_NAMESPACE
template <> struct formatter<copy_throwable> {
auto parse(format_parse_context& ctx) const -> decltype(ctx.begin()) {
return ctx.begin();
}
auto format(copy_throwable, format_context& ctx) -> decltype(ctx.out()) {
return ctx.out();
}
};
FMT_END_NAMESPACE
TEST(FormatDynArgsTest, ThrowOnCopy) {
fmt::dynamic_format_arg_store<fmt::format_context> store;
store.push_back(std::string("foo"));
try {
store.push_back(copy_throwable());
} catch (...) {
}
EXPECT_EQ(fmt::vformat("{}", store), "foo");
}
TEST(StringViewTest, ValueType) {
static_assert(std::is_same<string_view::value_type, char>::value, "");
}
TEST(StringViewTest, Length) {
// Test that StringRef::size() returns string length, not buffer size.
// Test that string_view::size() returns string length, not buffer size.
char str[100] = "some string";
EXPECT_EQ(std::strlen(str), string_view(str).size());
EXPECT_LT(std::strlen(str), sizeof(str));
}
// Check string_view's comparison operator.
template <template <typename> class Op>
void check_op() {
const char *inputs[] = {"foo", "fop", "fo"};
template <template <typename> class Op> void check_op() {
const char* inputs[] = {"foo", "fop", "fo"};
std::size_t num_inputs = sizeof(inputs) / sizeof(*inputs);
for (std::size_t i = 0; i < num_inputs; ++i) {
for (std::size_t j = 0; j < num_inputs; ++j) {
@ -442,63 +540,105 @@ TEST(StringViewTest, Compare) {
check_op<std::greater_equal>();
}
enum basic_enum {};
struct enabled_formatter {};
struct disabled_formatter {};
struct disabled_formatter_convertible {
operator int() const { return 42; }
};
TEST(CoreTest, ConvertToInt) {
EXPECT_FALSE((fmt::convert_to_int<char, char>::value));
EXPECT_FALSE((fmt::convert_to_int<const char *, char>::value));
EXPECT_TRUE((fmt::convert_to_int<basic_enum, char>::value));
FMT_BEGIN_NAMESPACE
template <> struct formatter<enabled_formatter> {
auto parse(format_parse_context& ctx) -> decltype(ctx.begin()) {
return ctx.begin();
}
auto format(enabled_formatter, format_context& ctx) -> decltype(ctx.out()) {
return ctx.out();
}
};
FMT_END_NAMESPACE
TEST(CoreTest, HasFormatter) {
using fmt::has_formatter;
using context = fmt::format_context;
static_assert(has_formatter<enabled_formatter, context>::value, "");
static_assert(!has_formatter<disabled_formatter, context>::value, "");
static_assert(!has_formatter<disabled_formatter_convertible, context>::value,
"");
}
enum enum_with_underlying_type : char {};
struct convertible_to_int {
operator int() const { return 42; }
};
TEST(CoreTest, IsEnumConvertibleToInt) {
EXPECT_TRUE((fmt::convert_to_int<enum_with_underlying_type, char>::value));
struct convertible_to_c_string {
operator const char*() const { return "foo"; }
};
FMT_BEGIN_NAMESPACE
template <> struct formatter<convertible_to_int> {
auto parse(format_parse_context& ctx) -> decltype(ctx.begin()) {
return ctx.begin();
}
auto format(convertible_to_int, format_context& ctx) -> decltype(ctx.out()) {
return std::copy_n("foo", 3, ctx.out());
}
};
template <> struct formatter<convertible_to_c_string> {
auto parse(format_parse_context& ctx) -> decltype(ctx.begin()) {
return ctx.begin();
}
auto format(convertible_to_c_string, format_context& ctx)
-> decltype(ctx.out()) {
return std::copy_n("bar", 3, ctx.out());
}
};
FMT_END_NAMESPACE
TEST(CoreTest, FormatterOverridesImplicitConversion) {
EXPECT_EQ(fmt::format("{}", convertible_to_int()), "foo");
EXPECT_EQ(fmt::format("{}", convertible_to_c_string()), "bar");
}
namespace my_ns {
template <typename Char>
class my_string {
template <typename Char> class my_string {
public:
my_string(const Char *s) : s_(s) {}
const Char * data() const FMT_NOEXCEPT { return s_.data(); }
my_string(const Char* s) : s_(s) {}
const Char* data() const FMT_NOEXCEPT { return s_.data(); }
std::size_t length() const FMT_NOEXCEPT { return s_.size(); }
operator const Char*() const { return s_.c_str(); }
private:
std::basic_string<Char> s_;
};
template <typename Char>
inline fmt::basic_string_view<Char>
to_string_view(const my_string<Char> &s) FMT_NOEXCEPT {
return { s.data(), s.length() };
inline fmt::basic_string_view<Char> to_string_view(const my_string<Char>& s)
FMT_NOEXCEPT {
return {s.data(), s.length()};
}
struct non_string {};
}
} // namespace my_ns
namespace FakeQt {
class QString {
public:
QString(const wchar_t *s) : s_(std::make_shared<std::wstring>(s)) {}
const wchar_t *utf16() const FMT_NOEXCEPT { return s_->data(); }
QString(const wchar_t* s) : s_(std::make_shared<std::wstring>(s)) {}
const wchar_t* utf16() const FMT_NOEXCEPT { return s_->data(); }
int size() const FMT_NOEXCEPT { return static_cast<int>(s_->size()); }
#ifdef FMT_STRING_VIEW
operator FMT_STRING_VIEW<wchar_t>() const FMT_NOEXCEPT { return *s_; }
#endif
private:
std::shared_ptr<std::wstring> s_;
};
inline fmt::basic_string_view<wchar_t> to_string_view(
const QString &s) FMT_NOEXCEPT {
return {s.utf16(),
static_cast<std::size_t>(s.size())};
}
inline fmt::basic_string_view<wchar_t> to_string_view(const QString& s)
FMT_NOEXCEPT {
return {s.utf16(), static_cast<std::size_t>(s.size())};
}
} // namespace FakeQt
template <typename T>
class IsStringTest : public testing::Test {};
template <typename T> class IsStringTest : public testing::Test {};
typedef ::testing::Types<char, wchar_t, char16_t, char32_t> StringCharTypes;
TYPED_TEST_CASE(IsStringTest, StringCharTypes);
@ -506,24 +646,24 @@ TYPED_TEST_CASE(IsStringTest, StringCharTypes);
namespace {
template <typename Char>
struct derived_from_string_view : fmt::basic_string_view<Char> {};
}
} // namespace
TYPED_TEST(IsStringTest, IsString) {
EXPECT_TRUE((fmt::internal::is_string<TypeParam *>::value));
EXPECT_TRUE((fmt::internal::is_string<const TypeParam *>::value));
EXPECT_TRUE((fmt::internal::is_string<TypeParam[2]>::value));
EXPECT_TRUE((fmt::internal::is_string<const TypeParam[2]>::value));
EXPECT_TRUE((fmt::internal::is_string<std::basic_string<TypeParam>>::value));
EXPECT_TRUE(fmt::internal::is_string<TypeParam*>::value);
EXPECT_TRUE(fmt::internal::is_string<const TypeParam*>::value);
EXPECT_TRUE(fmt::internal::is_string<TypeParam[2]>::value);
EXPECT_TRUE(fmt::internal::is_string<const TypeParam[2]>::value);
EXPECT_TRUE(fmt::internal::is_string<std::basic_string<TypeParam>>::value);
EXPECT_TRUE(
(fmt::internal::is_string<fmt::basic_string_view<TypeParam>>::value));
fmt::internal::is_string<fmt::basic_string_view<TypeParam>>::value);
EXPECT_TRUE(
(fmt::internal::is_string<derived_from_string_view<TypeParam>>::value));
#ifdef FMT_STRING_VIEW
EXPECT_TRUE((fmt::internal::is_string<FMT_STRING_VIEW<TypeParam>>::value));
#endif
EXPECT_TRUE((fmt::internal::is_string<my_ns::my_string<TypeParam>>::value));
EXPECT_FALSE((fmt::internal::is_string<my_ns::non_string>::value));
EXPECT_TRUE((fmt::internal::is_string<FakeQt::QString>::value));
fmt::internal::is_string<derived_from_string_view<TypeParam>>::value);
using string_view = fmt::internal::std_string_view<TypeParam>;
EXPECT_TRUE(std::is_empty<string_view>::value !=
fmt::internal::is_string<string_view>::value);
EXPECT_TRUE(fmt::internal::is_string<my_ns::my_string<TypeParam>>::value);
EXPECT_FALSE(fmt::internal::is_string<my_ns::non_string>::value);
EXPECT_TRUE(fmt::internal::is_string<FakeQt::QString>::value);
}
TEST(CoreTest, Format) {
@ -551,15 +691,18 @@ TEST(CoreTest, ToStringViewForeignStrings) {
EXPECT_EQ(to_string_view(my_string<wchar_t>(L"42")), L"42");
EXPECT_EQ(to_string_view(QString(L"42")), L"42");
fmt::internal::type type =
fmt::internal::get_type<fmt::format_context, my_string<char>>::value;
EXPECT_EQ(type, fmt::internal::string_type);
fmt::internal::mapped_type_constant<my_string<char>,
fmt::format_context>::value;
EXPECT_EQ(type, fmt::internal::type::string_type);
type = fmt::internal::mapped_type_constant<my_string<wchar_t>,
fmt::wformat_context>::value;
EXPECT_EQ(type, fmt::internal::type::string_type);
type =
fmt::internal::get_type<fmt::wformat_context, my_string<wchar_t>>::value;
EXPECT_EQ(type, fmt::internal::string_type);
type = fmt::internal::get_type<fmt::wformat_context, QString>::value;
EXPECT_EQ(type, fmt::internal::string_type);
fmt::internal::mapped_type_constant<QString, fmt::wformat_context>::value;
EXPECT_EQ(type, fmt::internal::type::string_type);
// Does not compile: only wide format contexts are compatible with QString!
// type = fmt::internal::get_type<fmt::format_context, QString>::value;
// type = fmt::internal::mapped_type_constant<QString,
// fmt::format_context>::value;
}
TEST(CoreTest, FormatForeignStrings) {
@ -572,6 +715,10 @@ TEST(CoreTest, FormatForeignStrings) {
EXPECT_EQ(fmt::format(my_string<wchar_t>(L"{}"), QString(L"42")), L"42");
}
struct implicitly_convertible_to_string {
operator std::string() const { return "foo"; }
};
struct implicitly_convertible_to_string_view {
operator fmt::string_view() const { return "foo"; }
};
@ -581,7 +728,7 @@ TEST(FormatterTest, FormatImplicitlyConvertibleToStringView) {
}
// std::is_constructible is broken in MSVC until version 2015.
#if FMT_USE_EXPLICIT && (!FMT_MSC_VER || FMT_MSC_VER >= 1900)
#if !FMT_MSC_VER || FMT_MSC_VER >= 1900
struct explicitly_convertible_to_string_view {
explicit operator fmt::string_view() const { return "foo"; }
};
@ -590,6 +737,17 @@ TEST(FormatterTest, FormatExplicitlyConvertibleToStringView) {
EXPECT_EQ("foo", fmt::format("{}", explicitly_convertible_to_string_view()));
}
# ifdef FMT_USE_STRING_VIEW
struct explicitly_convertible_to_std_string_view {
explicit operator std::string_view() const { return "foo"; }
};
TEST(FormatterTest, FormatExplicitlyConvertibleToStdStringView) {
EXPECT_EQ("foo",
fmt::format("{}", explicitly_convertible_to_std_string_view()));
}
# endif
struct explicitly_convertible_to_wstring_view {
explicit operator fmt::wstring_view() const { return L"foo"; }
};
@ -598,16 +756,15 @@ TEST(FormatterTest, FormatExplicitlyConvertibleToWStringView) {
EXPECT_EQ(L"foo",
fmt::format(L"{}", explicitly_convertible_to_wstring_view()));
}
#endif
struct explicitly_convertible_to_string_like {
template <
typename String,
typename = typename std::enable_if<
std::is_constructible<String, const char*, std::size_t>::value>::type>
FMT_EXPLICIT operator String() const { return String("foo", 3u); }
struct disabled_rvalue_conversion {
operator const char*() const& { return "foo"; }
operator const char*() & { return "foo"; }
operator const char*() const&& = delete;
operator const char*() && = delete;
};
TEST(FormatterTest, FormatExplicitlyConvertibleToStringLike) {
EXPECT_EQ("foo", fmt::format("{}", explicitly_convertible_to_string_like()));
TEST(FormatterTest, DisabledRValueConversion) {
EXPECT_EQ("foo", fmt::format("{}", disabled_rvalue_conversion()));
}
#endif

View file

@ -0,0 +1,73 @@
# We can find some usecases which follow the guide of CMake which uses
# `enable_language(CUDA)` instead of `find_package(CUDA)` and let the CMake
# built-in functions use NVCC.
# See: https://cmake.org/cmake/help/latest/module/FindCUDA.html#replacement
#
# However, this requires CMake version 3.10 or higher and we can't be sure most
# of the CUDA projects are using those.
#
# This test relies on `find_package(CUDA)` in the parent CMake config.
# These can be updated when NVCC becomes ready for C++ 17 features
# https://docs.nvidia.com/cuda/cuda-c-programming-guide/index.html#cpp14-language-features
set(CMAKE_CUDA_STANDARD 14)
set(CMAKE_CUDA_STANDARD_REQUIRED 14)
# In this test, we assume that the user is going to compile CUDA source code
# with some libraries (fmt in this case).
#
# In addition to that, this test invokes both the C++ host compiler and NVCC
# by providing another (non-CUDA) C++ source code.
if (${CMAKE_VERSION} VERSION_LESS 3.15)
# https://docs.nvidia.com/cuda/cuda-compiler-driver-nvcc/index.html
list(APPEND CUDA_NVCC_FLAGS "-std=c++14")
if (MSVC)
# This is the solution of pytorch:
# https://github.com/pytorch/pytorch/pull/7118
list(APPEND CUDA_NVCC_FLAGS "-Xcompiler" "/std:c++14")
list(APPEND CUDA_NVCC_FLAGS "-Xcompiler" "/Zc:__cplusplus")
# for the reason of this -Xcompiler options, see below.
endif ()
cuda_add_executable(fmt-in-cuda-test cuda-cpp14.cu cpp14.cc)
target_compile_features(fmt-in-cuda-test PRIVATE cxx_std_14)
if (MSVC)
# This part is for (non-CUDA) C++ code. MSVC can define incorrect
# `__cplusplus` macro. Fix for the issue is to use additional compiler flag.
#
# See Also:
# https://devblogs.microsoft.com/cppblog/msvc-now-correctly-reports-__cplusplus/
# https://github.com/Microsoft/vscode-cpptools/issues/2595
target_compile_options(fmt-in-cuda-test PRIVATE /Zc:__cplusplus /permissive-)
endif ()
else()
# now using a "new" way of handling CUDA
add_executable(fmt-in-cuda-test cuda-cpp14.cu cpp14.cc)
set_target_properties(fmt-in-cuda-test PROPERTIES CUDA_SEPARABLE_COMPILATION ON)
target_compile_features(fmt-in-cuda-test PRIVATE cxx_std_14)
if (MSVC)
# with MSVC, 'cxx_std_14' will only propagate to the host code (MSVC), but will
# not set __cplusplus correctly anyway, while nvcc will ignore it.
# If specified for nvcc on the command line as '-std=c++14' nvcc will emit this
# message instead:
# nvcc warning : The -std=c++14 flag is not supported with the configured host
# compiler. Flag will be ignored.
set_property(SOURCE cuda-cpp14.cu APPEND PROPERTY
COMPILE_OPTIONS -Xcompiler /std:c++14 -Xcompiler /Zc:__cplusplus)
set_property(SOURCE cpp14.cc APPEND PROPERTY
COMPILE_OPTIONS /std:c++14 /Zc:__cplusplus)
endif()
endif()
get_target_property(IN_USE_CUDA_STANDARD fmt-in-cuda-test CUDA_STANDARD)
message(STATUS "cuda_standard: ${IN_USE_CUDA_STANDARD}")
get_target_property(IN_USE_CUDA_STANDARD_REQUIRED
fmt-in-cuda-test CUDA_STANDARD_REQUIRED)
message(STATUS "cuda_standard_required: ${IN_USE_CUDA_STANDARD_REQUIRED}")
# We don't use PUBLIC or other keyword for reasons explained in the
# CUDA_LINK_LIBRARIES_KEYWORD section in
# https://cmake.org/cmake/help/latest/module/FindCUDA.html
target_link_libraries(fmt-in-cuda-test fmt::fmt)

11
test/cuda-test/cpp14.cc Normal file
View file

@ -0,0 +1,11 @@
#include <fmt/core.h>
// The purpose of this part is to ensure NVCC's host compiler also supports
// the standard version. See 'cuda-cpp14.cu'.
//
// https://en.cppreference.com/w/cpp/preprocessor/replace#Predefined_macros
static_assert(__cplusplus >= 201402L, "expect C++ 2014 for host compiler");
auto make_message_cpp() -> std::string {
return fmt::format("host compiler \t: __cplusplus == {}", __cplusplus);
}

View file

@ -0,0 +1,28 @@
// Direct NVCC command line example:
//
// nvcc ./cuda-cpp14.cu -x cu -I"../include" -l"fmtd" -L"../build/Debug" \
// -std=c++14 -Xcompiler /std:c++14 -Xcompiler /Zc:__cplusplus
// Ensure that we are using the latest C++ standard for NVCC
// The version is C++14
//
// https://docs.nvidia.com/cuda/cuda-c-programming-guide/index.html#c-cplusplus-language-support
// https://en.cppreference.com/w/cpp/preprocessor/replace#Predefined_macros
static_assert(__cplusplus >= 201402L, "expect C++ 2014 for nvcc");
#include <fmt/core.h>
#include <cuda.h>
#include <iostream>
extern auto make_message_cpp() -> std::string;
extern auto make_message_cuda() -> std::string;
int main() {
std::cout << make_message_cuda() << std::endl;
std::cout << make_message_cpp() << std::endl;
}
auto make_message_cuda() -> std::string {
return fmt::format("nvcc compiler \t: __cplusplus == {}", __cplusplus);
}

View file

@ -5,6 +5,10 @@
//
// For the license information refer to format.h.
#ifndef _CRT_SECURE_NO_WARNINGS
#define _CRT_SECURE_NO_WARNINGS
#endif
#include "fmt/format.h"
#include "gtest-extra.h"
@ -13,22 +17,22 @@
// A custom argument formatter that doesn't print `-` for floating-point values
// rounded to 0.
class custom_arg_formatter :
public fmt::arg_formatter<fmt::back_insert_range<fmt::internal::buffer>> {
class custom_arg_formatter
: public fmt::arg_formatter<fmt::buffer_range<char>> {
public:
typedef fmt::back_insert_range<fmt::internal::buffer> range;
using range = fmt::buffer_range<char>;
typedef fmt::arg_formatter<range> base;
custom_arg_formatter(
fmt::format_context &ctx, fmt::format_specs *s = FMT_NULL)
: base(ctx, s) {}
custom_arg_formatter(fmt::format_context& ctx,
fmt::format_parse_context* parse_ctx,
fmt::format_specs* s = nullptr)
: base(ctx, parse_ctx, s) {}
using base::operator();
iterator operator()(double value) {
// Comparing a float to 0.0 is safe.
if (round(value * pow(10, spec()->precision)) == 0.0)
value = 0;
if (round(value * pow(10, specs()->precision)) == 0.0) value = 0;
return base::operator()(value);
}
};
@ -41,7 +45,7 @@ std::string custom_vformat(fmt::string_view format_str, fmt::format_args args) {
}
template <typename... Args>
std::string custom_format(const char *format_str, const Args & ... args) {
std::string custom_format(const char* format_str, const Args&... args) {
auto va = fmt::make_format_args(args...);
return custom_vformat(format_str, va);
}

861
test/format Normal file
View file

@ -0,0 +1,861 @@
// Formatting library for C++ - the standard API implementation
//
// Copyright (c) 2012 - present, Victor Zverovich
// All rights reserved.
//
// For the license information refer to format.h.
#ifndef FMT_FORMAT_
#define FMT_FORMAT_
#include <cassert>
#include <variant>
#include "fmt/format.h"
// This implementation verifies the correctness of the standard API proposed in
// P0645 Text Formatting and is optimized for copy-pasting from the paper, not
// for efficiency or readability. An efficient implementation should not use
// std::variant and should store packed argument type tags separately from
// values in basic_format_args for small number of arguments.
namespace std {
template<class T>
constexpr bool Integral = is_integral_v<T>;
template <class O>
using iter_difference_t = ptrdiff_t;
}
// https://fmt.dev/Text%20Formatting.html#format.syn
namespace std {
// [format.error], class format_error
class format_error;
// [format.formatter], formatter
template<class charT> class basic_format_parse_context;
using format_parse_context = basic_format_parse_context<char>;
using wformat_parse_context = basic_format_parse_context<wchar_t>;
template<class Out, class charT> class basic_format_context;
using format_context = basic_format_context<
/* unspecified */ std::back_insert_iterator<fmt::internal::buffer<char>>, char>;
using wformat_context = basic_format_context<
/* unspecified */ std::back_insert_iterator<fmt::internal::buffer<wchar_t>>, wchar_t>;
template<class T, class charT = char> struct formatter {
formatter() = delete;
};
// [format.arguments], arguments
template<class Context> class basic_format_arg;
template<class Visitor, class Context>
/* see below */ auto visit_format_arg(Visitor&& vis, basic_format_arg<Context> arg);
template<class Context, class... Args> struct format_arg_store; // exposition only
template<class Context> class basic_format_args;
using format_args = basic_format_args<format_context>;
using wformat_args = basic_format_args<wformat_context>;
template<class Out, class charT>
using format_args_t = basic_format_args<basic_format_context<Out, charT>>;
template<class Context = format_context, class... Args>
format_arg_store<Context, Args...>
make_format_args(const Args&... args);
template<class... Args>
format_arg_store<wformat_context, Args...>
make_wformat_args(const Args&... args);
// [format.functions], formatting functions
template<class... Args>
string format(string_view fmt, const Args&... args);
template<class... Args>
wstring format(wstring_view fmt, const Args&... args);
string vformat(string_view fmt, format_args args);
wstring vformat(wstring_view fmt, wformat_args args);
template<class Out, class... Args>
Out format_to(Out out, string_view fmt, const Args&... args);
template<class Out, class... Args>
Out format_to(Out out, wstring_view fmt, const Args&... args);
template<class Out>
Out vformat_to(Out out, string_view fmt, format_args_t<fmt::type_identity_t<Out>, char> args);
template<class Out>
Out vformat_to(Out out, wstring_view fmt, format_args_t<fmt::type_identity_t<Out>, wchar_t> args);
template<class Out>
struct format_to_n_result {
Out out;
iter_difference_t<Out> size;
};
template<class Out, class... Args>
format_to_n_result<Out> format_to_n(Out out, iter_difference_t<Out> n,
string_view fmt, const Args&... args);
template<class Out, class... Args>
format_to_n_result<Out> format_to_n(Out out, iter_difference_t<Out> n,
wstring_view fmt, const Args&... args);
template<class... Args>
size_t formatted_size(string_view fmt, const Args&... args);
template<class... Args>
size_t formatted_size(wstring_view fmt, const Args&... args);
}
// https://fmt.dev/Text%20Formatting.html#format.error
namespace std {
class format_error : public runtime_error {
public:
explicit format_error(const string& what_arg) : runtime_error(what_arg) {}
explicit format_error(const char* what_arg) : runtime_error(what_arg) {}
};
}
namespace std {
namespace detail {
struct error_handler {
// This function is intentionally not constexpr to give a compile-time error.
void on_error(const char* message) {
throw std::format_error(message);
}
};
}
}
// https://fmt.dev/Text%20Formatting.html#format.parse_context
namespace std {
template<class charT>
class basic_format_parse_context {
public:
using char_type = charT;
using const_iterator = typename basic_string_view<charT>::const_iterator;
using iterator = const_iterator;
private:
iterator begin_; // exposition only
iterator end_; // exposition only
enum indexing { unknown, manual, automatic }; // exposition only
indexing indexing_; // exposition only
size_t next_arg_id_; // exposition only
size_t num_args_; // exposition only
public:
explicit constexpr basic_format_parse_context(basic_string_view<charT> fmt,
size_t num_args = 0) noexcept;
basic_format_parse_context(const basic_format_parse_context&) = delete;
basic_format_parse_context& operator=(const basic_format_parse_context&) = delete;
constexpr const_iterator begin() const noexcept;
constexpr const_iterator end() const noexcept;
constexpr void advance_to(const_iterator it);
constexpr size_t next_arg_id();
constexpr void check_arg_id(size_t id);
// Implementation detail:
constexpr void check_arg_id(fmt::string_view) {}
detail::error_handler error_handler() const { return {}; }
void on_error(const char* msg) { error_handler().on_error(msg); }
};
}
namespace std {
template<class charT>
/* explicit */ constexpr basic_format_parse_context<charT>::
basic_format_parse_context(basic_string_view<charT> fmt,
size_t num_args) noexcept
: begin_(fmt.begin()), end_(fmt.end()), indexing_(unknown), next_arg_id_(0), num_args_(num_args) {}
template<class charT>
constexpr typename basic_format_parse_context<charT>::const_iterator basic_format_parse_context<charT>::begin() const noexcept { return begin_; }
template<class charT>
constexpr typename basic_format_parse_context<charT>::const_iterator basic_format_parse_context<charT>::end() const noexcept { return end_; }
template<class charT>
constexpr void basic_format_parse_context<charT>::advance_to(typename basic_format_parse_context<charT>::iterator it) { begin_ = it; }
template<class charT>
constexpr size_t basic_format_parse_context<charT>::next_arg_id() {
if (indexing_ == manual)
throw format_error("manual to automatic indexing");
if (indexing_ == unknown)
indexing_ = automatic;
return next_arg_id_++;
}
template<class charT>
constexpr void basic_format_parse_context<charT>::check_arg_id(size_t id) {
// clang doesn't support __builtin_is_constant_evaluated yet
//if (!(!__builtin_is_constant_evaluated() || id < num_args_))
// throw format_error(invalid index is out of range");
if (indexing_ == automatic)
throw format_error("automatic to manual indexing");
if (indexing_ == unknown)
indexing_ = manual;
}
}
// https://fmt.dev/Text%20Formatting.html#format.context
namespace std {
template<class Out, class charT>
class basic_format_context {
basic_format_args<basic_format_context> args_; // exposition only
Out out_; // exposition only
public:
using iterator = Out;
using char_type = charT;
template<class T> using formatter_type = formatter<T, charT>;
basic_format_arg<basic_format_context> arg(size_t id) const;
iterator out();
void advance_to(iterator it);
// Implementation details:
using format_arg = basic_format_arg<basic_format_context>;
basic_format_context(Out out, basic_format_args<basic_format_context> args, fmt::internal::locale_ref)
: args_(args), out_(out) {}
detail::error_handler error_handler() const { return {}; }
basic_format_arg<basic_format_context> arg(fmt::basic_string_view<charT>) const {
return {}; // unused: named arguments are not supported yet
}
void on_error(const char* msg) { error_handler().on_error(msg); }
};
}
namespace std {
template<class O, class charT>
basic_format_arg<basic_format_context<O, charT>> basic_format_context<O, charT>::arg(size_t id) const { return args_.get(id); }
template<class O, class charT>
typename basic_format_context<O, charT>::iterator basic_format_context<O, charT>::out() { return out_; }
template<class O, class charT>
void basic_format_context<O, charT>::advance_to(typename basic_format_context<O, charT>::iterator it) { out_ = it; }
}
namespace std {
namespace detail {
template <typename T>
constexpr bool is_standard_integer_v =
std::is_same_v<T, signed char> ||
std::is_same_v<T, short int> ||
std::is_same_v<T, int> ||
std::is_same_v<T, long int> ||
std::is_same_v<T, long long int>;
template <typename T>
constexpr bool is_standard_unsigned_integer_v =
std::is_same_v<T, unsigned char> ||
std::is_same_v<T, unsigned short int> ||
std::is_same_v<T, unsigned int> ||
std::is_same_v<T, unsigned long int> ||
std::is_same_v<T, unsigned long long int>;
template <typename T, typename Char> struct formatter;
}
}
// https://fmt.dev/Text%20Formatting.html#format.arg
namespace std {
template<class Context>
class basic_format_arg {
public:
class handle;
private:
using char_type = typename Context::char_type; // exposition only
variant<monostate, bool, char_type,
int, unsigned int, long long int, unsigned long long int,
double, long double,
const char_type*, basic_string_view<char_type>,
const void*, handle> value; // exposition only
template<typename T,
typename = enable_if_t<
std::is_same_v<T, bool> ||
std::is_same_v<T, char_type> ||
(std::is_same_v<T, char> && std::is_same_v<char_type, wchar_t>) ||
detail::is_standard_integer_v<T> ||
detail::is_standard_unsigned_integer_v<T> ||
sizeof(typename Context::template formatter_type<T>().format(declval<const T&>(), declval<Context&>())) != 0
>> explicit basic_format_arg(const T& v) noexcept; // exposition only
explicit basic_format_arg(float n) noexcept; // exposition only
explicit basic_format_arg(double n) noexcept; // exposition only
explicit basic_format_arg(long double n) noexcept; // exposition only
explicit basic_format_arg(const char_type* s); // exposition only
template<class traits>
explicit basic_format_arg(
basic_string_view<char_type, traits> s) noexcept; // exposition only
template<class traits, class Allocator>
explicit basic_format_arg(
const basic_string<char_type, traits, Allocator>& s) noexcept; // exposition only
explicit basic_format_arg(nullptr_t) noexcept; // exposition only
template<class T, typename = enable_if_t<is_void_v<T>>>
explicit basic_format_arg(const T* p) noexcept; // exposition only
// Fails due to a bug in clang
//template<class Visitor, class Ctx>
// friend auto visit_format_arg(Visitor&& vis,
// basic_format_arg<Ctx> arg); // exposition only
friend auto get_value(basic_format_arg arg) {
return arg.value;
}
template <typename T, typename Char> friend struct detail::formatter;
template<class Ctx, class... Args>
friend format_arg_store<Ctx, Args...>
make_format_args(const Args&... args); // exposition only
public:
basic_format_arg() noexcept;
explicit operator bool() const noexcept;
};
}
namespace std {
template<class Context>
basic_format_arg<Context>::basic_format_arg() noexcept {}
template<class Context>
template<class T, typename> /* explicit */ basic_format_arg<Context>::basic_format_arg(const T& v) noexcept {
if constexpr (std::is_same_v<T, bool> || std::is_same_v<T, char_type>)
value = v;
else if constexpr (std::is_same_v<T, char> && std::is_same_v<char_type, wchar_t>)
value = static_cast<wchar_t>(v);
else if constexpr (detail::is_standard_integer_v<T> && sizeof(T) <= sizeof(int))
value = static_cast<int>(v);
else if constexpr (detail::is_standard_unsigned_integer_v<T> && sizeof(T) <= sizeof(unsigned))
value = static_cast<unsigned>(v);
else if constexpr (detail::is_standard_integer_v<T>)
value = static_cast<long long int>(v);
else if constexpr (detail::is_standard_unsigned_integer_v<T>)
value = static_cast<unsigned long long int>(v);
else if constexpr (sizeof(typename Context::template formatter_type<T>().format(declval<const T&>(), declval<Context&>())) != 0)
value = handle(v);
}
template<class Context>
/* explicit */ basic_format_arg<Context>::basic_format_arg(float n) noexcept
: value(static_cast<double>(n)) {}
template<class Context>
/* explicit */ basic_format_arg<Context>::basic_format_arg(double n) noexcept
: value(n) {}
template<class Context>
/* explicit */ basic_format_arg<Context>::basic_format_arg(long double n) noexcept
: value(n) {}
template<class Context>
/* explicit */ basic_format_arg<Context>::basic_format_arg(const typename basic_format_arg<Context>::char_type* s)
: value(s) {
assert(s != nullptr);
}
template<class Context>
template<class traits>
/* explicit */ basic_format_arg<Context>::basic_format_arg(basic_string_view<char_type, traits> s) noexcept
: value(s) {}
template<class Context>
template<class traits, class Allocator>
/* explicit */ basic_format_arg<Context>::basic_format_arg(
const basic_string<char_type, traits, Allocator>& s) noexcept
: value(basic_string_view<char_type>(s.data(), s.size())) {}
template<class Context>
/* explicit */ basic_format_arg<Context>::basic_format_arg(nullptr_t) noexcept
: value(static_cast<const void*>(nullptr)) {}
template<class Context>
template<class T, typename> /* explicit */ basic_format_arg<Context>::basic_format_arg(const T* p) noexcept
: value(p) {}
template<class Context>
/* explicit */ basic_format_arg<Context>::operator bool() const noexcept {
return !holds_alternative<monostate>(value);
}
}
namespace std {
template<class Context>
class basic_format_arg<Context>::handle {
const void* ptr_; // exposition only
void (*format_)(basic_format_parse_context<char_type>&,
Context&, const void*); // exposition only
template<class T> explicit handle(const T& val) noexcept; // exposition only
friend class basic_format_arg<Context>; // exposition only
public:
void format(basic_format_parse_context<char_type>&, Context& ctx) const;
};
}
namespace std {
template<class Context>
template<class T> /* explicit */ basic_format_arg<Context>::handle::handle(const T& val) noexcept
: ptr_(&val), format_([](basic_format_parse_context<char_type>& parse_ctx, Context& format_ctx, const void* ptr) {
typename Context::template formatter_type<T> f;
parse_ctx.advance_to(f.parse(parse_ctx));
format_ctx.advance_to(f.format(*static_cast<const T*>(ptr), format_ctx));
}) {}
template<class Context>
void basic_format_arg<Context>::handle::format(basic_format_parse_context<char_type>& parse_ctx, Context& format_ctx) const {
format_(parse_ctx, format_ctx, ptr_);
}
// https://fmt.dev/Text%20Formatting.html#format.visit
template<class Visitor, class Context>
auto visit_format_arg(Visitor&& vis, basic_format_arg<Context> arg) {
return visit(vis, get_value(arg));
}
}
// https://fmt.dev/Text%20Formatting.html#format.store
namespace std {
template<class Context, class... Args>
struct format_arg_store { // exposition only
array<basic_format_arg<Context>, sizeof...(Args)> args;
};
}
// https://fmt.dev/Text%20Formatting.html#format.basic_args
namespace std {
template<class Context>
class basic_format_args {
size_t size_; // exposition only
const basic_format_arg<Context>* data_; // exposition only
public:
basic_format_args() noexcept;
template<class... Args>
basic_format_args(const format_arg_store<Context, Args...>& store) noexcept;
basic_format_arg<Context> get(size_t i) const noexcept;
};
}
namespace std {
template<class Context>
basic_format_args<Context>::basic_format_args() noexcept : size_(0) {}
template<class Context>
template<class... Args>
basic_format_args<Context>::basic_format_args(const format_arg_store<Context, Args...>& store) noexcept
: size_(sizeof...(Args)), data_(store.args.data()) {}
template<class Context>
basic_format_arg<Context> basic_format_args<Context>::get(size_t i) const noexcept {
return i < size_ ? data_[i] : basic_format_arg<Context>();
}
}
namespace std {
// https://fmt.dev/Text%20Formatting.html#format.make_args
template<class Context /*= format_context*/, class... Args>
format_arg_store<Context, Args...> make_format_args(const Args&... args) {
return {basic_format_arg<Context>(args)...};
}
// https://fmt.dev/Text%20Formatting.html#format.make_wargs
template<class... Args>
format_arg_store<wformat_context, Args...> make_wformat_args(const Args&... args) {
return make_format_args<wformat_context>(args...);
}
}
namespace std {
namespace detail {
template <typename Range>
class arg_formatter
: public fmt::internal::arg_formatter_base<Range, error_handler> {
private:
using char_type = typename Range::value_type;
using base = fmt::internal::arg_formatter_base<Range, error_handler>;
using format_context = std::basic_format_context<typename base::iterator, char_type>;
using parse_context = basic_format_parse_context<char_type>;
parse_context* parse_ctx_;
format_context& ctx_;
public:
typedef Range range;
typedef typename base::iterator iterator;
typedef typename base::format_specs format_specs;
/**
\rst
Constructs an argument formatter object.
*ctx* is a reference to the formatting context,
*spec* contains format specifier information for standard argument types.
\endrst
*/
arg_formatter(format_context& ctx, parse_context* parse_ctx = nullptr, fmt::format_specs* spec = nullptr)
: base(Range(ctx.out()), spec, {}), parse_ctx_(parse_ctx), ctx_(ctx) {}
using base::operator();
/** Formats an argument of a user-defined type. */
iterator operator()(typename std::basic_format_arg<format_context>::handle handle) {
handle.format(*parse_ctx_, ctx_);
return this->out();
}
iterator operator()(monostate) {
throw format_error("");
}
};
template <typename Context>
inline fmt::internal::type get_type(basic_format_arg<Context> arg) {
return visit_format_arg([&] (auto val) {
using char_type = typename Context::char_type;
using T = decltype(val);
if (std::is_same_v<T, monostate>)
return fmt::internal::type::none_type;
if (std::is_same_v<T, bool>)
return fmt::internal::type::bool_type;
if (std::is_same_v<T, char_type>)
return fmt::internal::type::char_type;
if (std::is_same_v<T, int>)
return fmt::internal::type::int_type;
if (std::is_same_v<T, unsigned int>)
return fmt::internal::type::uint_type;
if (std::is_same_v<T, long long int>)
return fmt::internal::type::long_long_type;
if (std::is_same_v<T, unsigned long long int>)
return fmt::internal::type::ulong_long_type;
if (std::is_same_v<T, double>)
return fmt::internal::type::double_type;
if (std::is_same_v<T, long double>)
return fmt::internal::type::long_double_type;
if (std::is_same_v<T, const char_type*>)
return fmt::internal::type::cstring_type;
if (std::is_same_v<T, basic_string_view<char_type>>)
return fmt::internal::type::string_type;
if (std::is_same_v<T, const void*>)
return fmt::internal::type::pointer_type;
assert(get_value(arg).index() == 12);
return fmt::internal::type::custom_type;
}, arg);
}
template <typename Context>
class custom_formatter {
private:
using parse_context = basic_format_parse_context<typename Context::char_type>;
parse_context& parse_ctx_;
Context& format_ctx_;
public:
custom_formatter(parse_context& parse_ctx, Context& ctx) : parse_ctx_(parse_ctx), format_ctx_(ctx) {}
bool operator()(typename basic_format_arg<Context>::handle h) const {
h.format(parse_ctx_, format_ctx_);
return true;
}
template <typename T> bool operator()(T) const { return false; }
};
template <typename ArgFormatter, typename Char, typename Context>
struct format_handler : detail::error_handler {
typedef typename ArgFormatter::range range;
format_handler(range r, basic_string_view<Char> str,
basic_format_args<Context> format_args,
fmt::internal::locale_ref loc)
: parse_ctx(str), context(r.begin(), format_args, loc) {}
void on_text(const Char* begin, const Char* end) {
auto size = fmt::internal::to_unsigned(end - begin);
auto out = context.out();
auto&& it = fmt::internal::reserve(out, size);
it = std::copy_n(begin, size, it);
context.advance_to(out);
}
void on_arg_id() {
arg = context.arg(parse_ctx.next_arg_id());
}
void on_arg_id(unsigned id) {
parse_ctx.check_arg_id(id);
arg = context.arg(id);
}
void on_arg_id(fmt::basic_string_view<Char>) {}
void on_replacement_field(const Char* p) {
parse_ctx.advance_to(parse_ctx.begin() + (p - &*parse_ctx.begin()));
custom_formatter<Context> f(parse_ctx, context);
if (!visit_format_arg(f, arg))
context.advance_to(visit_format_arg(ArgFormatter(context, &parse_ctx), arg));
}
const Char* on_format_specs(const Char* begin, const Char* end) {
parse_ctx.advance_to(parse_ctx.begin() + (begin - &*parse_ctx.begin()));
custom_formatter<Context> f(parse_ctx, context);
if (visit_format_arg(f, arg)) return &*parse_ctx.begin();
fmt::basic_format_specs<Char> specs;
using fmt::internal::specs_handler;
using parse_context = basic_format_parse_context<Char>;
fmt::internal::specs_checker<specs_handler<parse_context, Context>> handler(
specs_handler<parse_context, Context>(specs, parse_ctx, context), get_type(arg));
begin = parse_format_specs(begin, end, handler);
if (begin == end || *begin != '}') on_error("missing '}' in format string");
parse_ctx.advance_to(parse_ctx.begin() + (begin - &*parse_ctx.begin()));
context.advance_to(visit_format_arg(ArgFormatter(context, &parse_ctx, &specs), arg));
return begin;
}
basic_format_parse_context<Char> parse_ctx;
Context context;
basic_format_arg<Context> arg;
};
template <typename T, typename Char>
struct formatter {
// Parses format specifiers stopping either at the end of the range or at the
// terminating '}'.
template <typename ParseContext>
FMT_CONSTEXPR typename ParseContext::iterator parse(ParseContext& ctx) {
namespace internal = fmt::internal;
typedef internal::dynamic_specs_handler<ParseContext> handler_type;
auto type = internal::mapped_type_constant<T, fmt::buffer_context<Char>>::value;
internal::specs_checker<handler_type> handler(handler_type(specs_, ctx),
type);
auto it = parse_format_specs(ctx.begin(), ctx.end(), handler);
auto type_spec = specs_.type;
auto eh = ctx.error_handler();
switch (type) {
case internal::type::none_type:
case internal::type::named_arg_type:
FMT_ASSERT(false, "invalid argument type");
break;
case internal::type::int_type:
case internal::type::uint_type:
case internal::type::long_long_type:
case internal::type::ulong_long_type:
case internal::type::bool_type:
handle_int_type_spec(type_spec,
internal::int_type_checker<decltype(eh)>(eh));
break;
case internal::type::char_type:
handle_char_specs(
&specs_, internal::char_specs_checker<decltype(eh)>(type_spec, eh));
break;
case internal::type::double_type:
case internal::type::long_double_type:
internal::parse_float_type_spec(specs_, eh);
break;
case internal::type::cstring_type:
internal::handle_cstring_type_spec(
type_spec, internal::cstring_type_checker<decltype(eh)>(eh));
break;
case internal::type::string_type:
internal::check_string_type_spec(type_spec, eh);
break;
case internal::type::pointer_type:
internal::check_pointer_type_spec(type_spec, eh);
break;
case internal::type::custom_type:
// Custom format specifiers should be checked in parse functions of
// formatter specializations.
break;
}
return it;
}
template <typename FormatContext>
auto format(const T& val, FormatContext& ctx) -> decltype(ctx.out()) {
fmt::internal::handle_dynamic_spec<fmt::internal::width_checker>(
specs_.width, specs_.width_ref, ctx);
fmt::internal::handle_dynamic_spec<fmt::internal::precision_checker>(
specs_.precision, specs_.precision_ref, ctx);
using range_type = fmt::internal::output_range<typename FormatContext::iterator,
typename FormatContext::char_type>;
return visit_format_arg(arg_formatter<range_type>(ctx, nullptr, &specs_),
basic_format_arg<FormatContext>(val));
}
private:
fmt::internal::dynamic_format_specs<Char> specs_;
};
} // namespace detail
// https://fmt.dev/Text%20Formatting.html#format.functions
template<class... Args>
string format(string_view fmt, const Args&... args) {
return vformat(fmt, make_format_args(args...));
}
template<class... Args>
wstring format(wstring_view fmt, const Args&... args) {
return vformat(fmt, make_wformat_args(args...));
}
string vformat(string_view fmt, format_args args) {
fmt::memory_buffer mbuf;
fmt::internal::buffer<char>& buf = mbuf;
using range = fmt::buffer_range<char>;
detail::format_handler<detail::arg_formatter<range>, char, format_context>
h(range(std::back_inserter(buf)), fmt, args, {});
fmt::internal::parse_format_string<false>(fmt::to_string_view(fmt), h);
return to_string(mbuf);
}
wstring vformat(wstring_view fmt, wformat_args args);
template<class Out, class... Args>
Out format_to(Out out, string_view fmt, const Args&... args) {
using context = basic_format_context<Out, decltype(fmt)::value_type>;
return vformat_to(out, fmt, make_format_args<context>(args...));
}
template<class Out, class... Args>
Out format_to(Out out, wstring_view fmt, const Args&... args) {
using context = basic_format_context<Out, decltype(fmt)::value_type>;
return vformat_to(out, fmt, make_format_args<context>(args...));
}
template<class Out>
Out vformat_to(Out out, string_view fmt, format_args_t<fmt::type_identity_t<Out>, char> args) {
using range = fmt::internal::output_range<Out, char>;
detail::format_handler<detail::arg_formatter<range>, char, basic_format_context<Out, char>>
h(range(out), fmt, args, {});
fmt::internal::parse_format_string<false>(fmt::to_string_view(fmt), h);
return h.context.out();
}
template<class Out>
Out vformat_to(Out out, wstring_view fmt, format_args_t<fmt::type_identity_t<Out>, wchar_t> args);
template<class Out, class... Args>
format_to_n_result<Out> format_to_n(Out out, iter_difference_t<Out> n,
string_view fmt, const Args&... args);
template<class Out, class... Args>
format_to_n_result<Out> format_to_n(Out out, iter_difference_t<Out> n,
wstring_view fmt, const Args&... args);
template<class... Args>
size_t formatted_size(string_view fmt, const Args&... args);
template<class... Args>
size_t formatted_size(wstring_view fmt, const Args&... args);
#define charT char
template<> struct formatter<charT, charT> : detail::formatter<charT, charT> {};
template<> struct formatter<char, wchar_t>;
template<> struct formatter<charT*, charT> : detail::formatter<const charT*, charT> {};
template<> struct formatter<const charT*, charT> : detail::formatter<const charT*, charT> {};
template<size_t N> struct formatter<const charT[N], charT>
: detail::formatter<std::basic_string_view<charT>, charT> {};
template<class traits, class Allocator>
struct formatter<basic_string<charT, traits, Allocator>, charT>
: detail::formatter<std::basic_string_view<charT>, charT> {};
template<class traits>
struct formatter<basic_string_view<charT, traits>, charT>
: detail::formatter<std::basic_string_view<charT>, charT> {};
template <> struct formatter<nullptr_t, charT> : detail::formatter<const void*, charT> {};
template <> struct formatter<void*, charT> : detail::formatter<const void*, charT> {};
template <> struct formatter<const void*, charT> : detail::formatter<const void*, charT> {};
template <> struct formatter<bool, charT> : detail::formatter<bool, charT> {};
template <> struct formatter<signed char, charT> : detail::formatter<int, charT> {};
template <> struct formatter<short, charT> : detail::formatter<int, charT> {};
template <> struct formatter<int, charT> : detail::formatter<int, charT> {};
template <> struct formatter<long, charT>
: detail::formatter<std::conditional_t<sizeof(long) == sizeof(int), int, long long>, charT> {};
template <> struct formatter<long long, charT> : detail::formatter<long long, charT> {};
template <> struct formatter<unsigned char, charT> : detail::formatter<unsigned int, charT> {};
template <> struct formatter<unsigned short, charT> : detail::formatter<unsigned int, charT> {};
template <> struct formatter<unsigned int, charT> : detail::formatter<unsigned int, charT> {};
template <> struct formatter<unsigned long, charT>
: detail::formatter<std::conditional_t<sizeof(long) == sizeof(int), unsigned, unsigned long long>, charT> {};
template <> struct formatter<unsigned long long, charT> : detail::formatter<unsigned long long, charT> {};
template <> struct formatter<float, charT> : detail::formatter<double, charT> {};
template <> struct formatter<double, charT> : detail::formatter<double, charT> {};
template <> struct formatter<long double, charT> : detail::formatter<long double, charT> {};
#undef charT
#define charT wchar_t
template<> struct formatter<charT, charT> : detail::formatter<charT, charT> {};
template<> struct formatter<char, wchar_t> : detail::formatter<charT, charT> {};
template<> struct formatter<charT*, charT> : detail::formatter<const charT*, charT> {};
template<> struct formatter<const charT*, charT> : detail::formatter<const charT*, charT> {};
template<size_t N> struct formatter<const charT[N], charT>
: detail::formatter<std::basic_string_view<charT>, charT> {};
template<class traits, class Allocator>
struct formatter<std::basic_string<charT, traits, Allocator>, charT>
: detail::formatter<std::basic_string_view<charT>, charT> {};
template<class traits>
struct formatter<std::basic_string_view<charT, traits>, charT>
: detail::formatter<std::basic_string_view<charT>, charT> {};
template <> struct formatter<nullptr_t, charT> : detail::formatter<const void*, charT> {};
template <> struct formatter<void*, charT> : detail::formatter<const void*, charT> {};
template <> struct formatter<const void*, charT> : detail::formatter<const void*, charT> {};
template <> struct formatter<bool, charT> : detail::formatter<bool, charT> {};
template <> struct formatter<signed char, charT> : detail::formatter<int, charT> {};
template <> struct formatter<short, charT> : detail::formatter<int, charT> {};
template <> struct formatter<int, charT> : detail::formatter<int, charT> {};
template <> struct formatter<long, charT>
: detail::formatter<std::conditional_t<sizeof(long) == sizeof(int), int, long long>, charT> {};
template <> struct formatter<long long, charT> : detail::formatter<long long, charT> {};
template <> struct formatter<unsigned char, charT> : detail::formatter<unsigned int, charT> {};
template <> struct formatter<unsigned short, charT> : detail::formatter<unsigned int, charT> {};
template <> struct formatter<unsigned int, charT> : detail::formatter<unsigned int, charT> {};
template <> struct formatter<unsigned long, charT>
: detail::formatter<std::conditional_t<sizeof(long) == sizeof(int), unsigned, unsigned long long>, charT> {};
template <> struct formatter<unsigned long long, charT> : detail::formatter<unsigned long long, charT> {};
template <> struct formatter<float, charT> : detail::formatter<double, charT> {};
template <> struct formatter<double, charT> : detail::formatter<double, charT> {};
template <> struct formatter<long double, charT> : detail::formatter<long double, charT> {};
#undef charT
template<> struct formatter<const wchar_t, char> {
formatter() = delete;
};
}
#endif // FMT_FORMAT_

View file

@ -0,0 +1,6 @@
// Copyright (c) 2020 Vladimir Solontsov
// SPDX-License-Identifier: MIT Licence
#include <fmt/core.h>
#include "gtest-extra.h"

View file

@ -10,75 +10,243 @@
#include "test-assert.h"
// Include format.cc instead of format.h to test implementation.
#include "../src/format.cc"
#include "fmt/color.h"
#include "fmt/printf.h"
#include <algorithm>
#include <cstring>
#include "../src/format.cc"
#include "fmt/printf.h"
#include "gmock.h"
#include "gtest-extra.h"
#include "util.h"
#undef min
#undef max
#if FMT_HAS_CPP_ATTRIBUTE(noreturn)
# define FMT_NORETURN [[noreturn]]
#else
# define FMT_NORETURN
#endif
using fmt::internal::bigint;
using fmt::internal::fp;
using fmt::internal::max_value;
template <bool is_iec559>
void test_construct_from_double() {
static_assert(!std::is_copy_constructible<bigint>::value, "");
static_assert(!std::is_copy_assignable<bigint>::value, "");
TEST(BigIntTest, Construct) {
EXPECT_EQ("", fmt::format("{}", bigint()));
EXPECT_EQ("42", fmt::format("{}", bigint(0x42)));
EXPECT_EQ("123456789abcedf0", fmt::format("{}", bigint(0x123456789abcedf0)));
}
TEST(BigIntTest, Compare) {
bigint n1(42);
bigint n2(42);
EXPECT_EQ(compare(n1, n2), 0);
n2 <<= 32;
EXPECT_LT(compare(n1, n2), 0);
bigint n3(43);
EXPECT_LT(compare(n1, n3), 0);
EXPECT_GT(compare(n3, n1), 0);
bigint n4(42 * 0x100000001);
EXPECT_LT(compare(n2, n4), 0);
EXPECT_GT(compare(n4, n2), 0);
}
TEST(BigIntTest, AddCompare) {
EXPECT_LT(
add_compare(bigint(0xffffffff), bigint(0xffffffff), bigint(1) <<= 64), 0);
EXPECT_LT(add_compare(bigint(1) <<= 32, bigint(1), bigint(1) <<= 96), 0);
EXPECT_GT(add_compare(bigint(1) <<= 32, bigint(0), bigint(0xffffffff)), 0);
EXPECT_GT(add_compare(bigint(0), bigint(1) <<= 32, bigint(0xffffffff)), 0);
EXPECT_GT(add_compare(bigint(42), bigint(1), bigint(42)), 0);
EXPECT_GT(add_compare(bigint(0xffffffff), bigint(1), bigint(0xffffffff)), 0);
EXPECT_LT(add_compare(bigint(10), bigint(10), bigint(22)), 0);
EXPECT_LT(add_compare(bigint(0x100000010), bigint(0x100000010),
bigint(0x300000010)),
0);
EXPECT_GT(add_compare(bigint(0x1ffffffff), bigint(0x100000002),
bigint(0x300000000)),
0);
EXPECT_EQ(add_compare(bigint(0x1ffffffff), bigint(0x100000002),
bigint(0x300000001)),
0);
EXPECT_LT(add_compare(bigint(0x1ffffffff), bigint(0x100000002),
bigint(0x300000002)),
0);
EXPECT_LT(add_compare(bigint(0x1ffffffff), bigint(0x100000002),
bigint(0x300000003)),
0);
}
TEST(BigIntTest, ShiftLeft) {
bigint n(0x42);
n <<= 0;
EXPECT_EQ("42", fmt::format("{}", n));
n <<= 1;
EXPECT_EQ("84", fmt::format("{}", n));
n <<= 25;
EXPECT_EQ("108000000", fmt::format("{}", n));
}
TEST(BigIntTest, Multiply) {
bigint n(0x42);
EXPECT_THROW(n *= 0, assertion_failure);
n *= 1;
EXPECT_EQ("42", fmt::format("{}", n));
n *= 2;
EXPECT_EQ("84", fmt::format("{}", n));
n *= 0x12345678;
EXPECT_EQ("962fc95e0", fmt::format("{}", n));
bigint bigmax(max_value<uint32_t>());
bigmax *= max_value<uint32_t>();
EXPECT_EQ("fffffffe00000001", fmt::format("{}", bigmax));
bigmax.assign(max_value<uint64_t>());
bigmax *= max_value<uint64_t>();
EXPECT_EQ("fffffffffffffffe0000000000000001", fmt::format("{}", bigmax));
}
TEST(BigIntTest, Accumulator) {
fmt::internal::accumulator acc;
EXPECT_EQ(acc.lower, 0);
EXPECT_EQ(acc.upper, 0);
acc.upper = 12;
acc.lower = 34;
EXPECT_EQ(static_cast<uint32_t>(acc), 34);
acc += 56;
EXPECT_EQ(acc.lower, 90);
acc += fmt::internal::max_value<uint64_t>();
EXPECT_EQ(acc.upper, 13);
EXPECT_EQ(acc.lower, 89);
acc >>= 32;
EXPECT_EQ(acc.upper, 0);
EXPECT_EQ(acc.lower, 13 * 0x100000000);
}
TEST(BigIntTest, Square) {
bigint n0(0);
n0.square();
EXPECT_EQ("0", fmt::format("{}", n0));
bigint n1(0x100);
n1.square();
EXPECT_EQ("10000", fmt::format("{}", n1));
bigint n2(0xfffffffff);
n2.square();
EXPECT_EQ("ffffffffe000000001", fmt::format("{}", n2));
bigint n3(max_value<uint64_t>());
n3.square();
EXPECT_EQ("fffffffffffffffe0000000000000001", fmt::format("{}", n3));
bigint n4;
n4.assign_pow10(10);
EXPECT_EQ("2540be400", fmt::format("{}", n4));
}
TEST(BigIntTest, DivModAssignZeroDivisor) {
bigint zero(0);
EXPECT_THROW(bigint(0).divmod_assign(zero), assertion_failure);
EXPECT_THROW(bigint(42).divmod_assign(zero), assertion_failure);
}
TEST(BigIntTest, DivModAssignSelf) {
bigint n(100);
EXPECT_THROW(n.divmod_assign(n), assertion_failure);
}
TEST(BigIntTest, DivModAssignUnaligned) {
// (42 << 340) / pow(10, 100):
bigint n1(42);
n1 <<= 340;
bigint n2;
n2.assign_pow10(100);
int result = n1.divmod_assign(n2);
EXPECT_EQ(result, 9406);
EXPECT_EQ("10f8353019583bfc29ffc8f564e1b9f9d819dbb4cf783e4507eca1539220p96",
fmt::format("{}", n1));
}
TEST(BigIntTest, DivModAssign) {
// 100 / 10:
bigint n1(100);
int result = n1.divmod_assign(bigint(10));
EXPECT_EQ(result, 10);
EXPECT_EQ("0", fmt::format("{}", n1));
// pow(10, 100) / (42 << 320):
n1.assign_pow10(100);
result = n1.divmod_assign(bigint(42) <<= 320);
EXPECT_EQ(result, 111);
EXPECT_EQ("13ad2594c37ceb0b2784c4ce0bf38ace408e211a7caab24308a82e8f10p96",
fmt::format("{}", n1));
// 42 / 100:
bigint n2(42);
n1.assign_pow10(2);
result = n2.divmod_assign(n1);
EXPECT_EQ(result, 0);
EXPECT_EQ("2a", fmt::format("{}", n2));
}
template <bool is_iec559> void run_double_tests() {
fmt::print("warning: double is not IEC559, skipping FP tests\n");
}
template <>
void test_construct_from_double<true>() {
auto v = fp(1.23);
EXPECT_EQ(v.f, 0x13ae147ae147aeu);
EXPECT_EQ(v.e, -52);
template <> void run_double_tests<true>() {
// Construct from double.
EXPECT_EQ(fp(1.23), fp(0x13ae147ae147aeu, -52));
// Compute boundaries:
fp value;
// Normalized & not power of 2 - equidistant boundaries:
auto b = value.assign_with_boundaries(1.23);
EXPECT_EQ(value, fp(0x0013ae147ae147ae, -52));
EXPECT_EQ(b.lower, 0x9d70a3d70a3d6c00);
EXPECT_EQ(b.upper, 0x9d70a3d70a3d7400);
// Normalized power of 2 - lower boundary is closer:
b = value.assign_with_boundaries(1.9807040628566084e+28); // 2**94
EXPECT_EQ(value, fp(0x0010000000000000, 42));
EXPECT_EQ(b.lower, 0x7ffffffffffffe00);
EXPECT_EQ(b.upper, 0x8000000000000400);
// Smallest normalized double - equidistant boundaries:
b = value.assign_with_boundaries(2.2250738585072014e-308);
EXPECT_EQ(value, fp(0x0010000000000000, -1074));
EXPECT_EQ(b.lower, 0x7ffffffffffffc00);
EXPECT_EQ(b.upper, 0x8000000000000400);
// Subnormal - equidistant boundaries:
b = value.assign_with_boundaries(4.9406564584124654e-324);
EXPECT_EQ(value, fp(0x0000000000000001, -1074));
EXPECT_EQ(b.lower, 0x4000000000000000);
EXPECT_EQ(b.upper, 0xc000000000000000);
}
TEST(FPTest, ConstructFromDouble) {
test_construct_from_double<std::numeric_limits<double>::is_iec559>();
TEST(FPTest, DoubleTests) {
run_double_tests<std::numeric_limits<double>::is_iec559>();
}
TEST(FPTest, Normalize) {
auto v = fp(0xbeef, 42);
v.normalize();
EXPECT_EQ(0xbeef000000000000, v.f);
EXPECT_EQ(-6, v.e);
const auto v = fp(0xbeef, 42);
auto normalized = normalize(v);
EXPECT_EQ(0xbeef000000000000, normalized.f);
EXPECT_EQ(-6, normalized.e);
}
TEST(FPTest, ComputeBoundariesSubnormal) {
auto v = fp(0xbeef, 42);
fp lower, upper;
v.compute_boundaries(lower, upper);
EXPECT_EQ(0xbeee800000000000, lower.f);
EXPECT_EQ(-6, lower.e);
EXPECT_EQ(0xbeef800000000000, upper.f);
EXPECT_EQ(-6, upper.e);
}
TEST(FPTest, ComputeBoundaries) {
auto v = fp(0x10000000000000, 42);
fp lower, upper;
v.compute_boundaries(lower, upper);
EXPECT_EQ(0x7ffffffffffffe00, lower.f);
EXPECT_EQ(31, lower.e);
EXPECT_EQ(0x8000000000000400, upper.f);
EXPECT_EQ(31, upper.e);
}
TEST(FPTest, Subtract) {
auto v = fp(123, 1) - fp(102, 1);
EXPECT_EQ(v.f, 21u);
EXPECT_EQ(v.e, 1);
TEST(FPTest, ComputeFloatBoundaries) {
struct {
double x, lower, upper;
} tests[] = {
// regular
{1.5f, 1.4999999403953552, 1.5000000596046448},
// boundary
{1.0f, 0.9999999701976776, 1.0000000596046448},
// min normal
{1.1754944e-38f, 1.1754942807573643e-38, 1.1754944208872107e-38},
// max subnormal
{1.1754942e-38f, 1.1754941406275179e-38, 1.1754942807573643e-38},
// min subnormal
{1e-45f, 7.006492321624085e-46, 2.1019476964872256e-45},
};
for (auto test : tests) {
fp vlower = normalize(fp(test.lower));
fp vupper = normalize(fp(test.upper));
vlower.f >>= vupper.e - vlower.e;
vlower.e = vupper.e;
fp value;
auto b = value.assign_float_with_boundaries(test.x);
EXPECT_EQ(vlower.f, b.lower);
EXPECT_EQ(vupper.f, b.upper);
}
}
TEST(FPTest, Multiply) {
@ -98,33 +266,87 @@ TEST(FPTest, GetCachedPower) {
EXPECT_LE(exp, fp.e);
int dec_exp_step = 8;
EXPECT_LE(fp.e, exp + dec_exp_step * log2(10));
EXPECT_DOUBLE_EQ(pow(10, dec_exp), ldexp(fp.f, fp.e));
EXPECT_DOUBLE_EQ(pow(10, dec_exp), ldexp(static_cast<double>(fp.f), fp.e));
}
}
TEST(FPTest, Grisu2FormatCompilesWithNonIEEEDouble) {
TEST(FPTest, GetRoundDirection) {
using fmt::internal::get_round_direction;
using fmt::internal::round_direction;
EXPECT_EQ(round_direction::down, get_round_direction(100, 50, 0));
EXPECT_EQ(round_direction::up, get_round_direction(100, 51, 0));
EXPECT_EQ(round_direction::down, get_round_direction(100, 40, 10));
EXPECT_EQ(round_direction::up, get_round_direction(100, 60, 10));
for (size_t i = 41; i < 60; ++i)
EXPECT_EQ(round_direction::unknown, get_round_direction(100, i, 10));
uint64_t max = max_value<uint64_t>();
EXPECT_THROW(get_round_direction(100, 100, 0), assertion_failure);
EXPECT_THROW(get_round_direction(100, 0, 100), assertion_failure);
EXPECT_THROW(get_round_direction(100, 0, 50), assertion_failure);
// Check that remainder + error doesn't overflow.
EXPECT_EQ(round_direction::up, get_round_direction(max, max - 1, 2));
// Check that 2 * (remainder + error) doesn't overflow.
EXPECT_EQ(round_direction::unknown,
get_round_direction(max, max / 2 + 1, max / 2));
// Check that remainder - error doesn't overflow.
EXPECT_EQ(round_direction::unknown, get_round_direction(100, 40, 41));
// Check that 2 * (remainder - error) doesn't overflow.
EXPECT_EQ(round_direction::up, get_round_direction(max, max - 1, 1));
}
TEST(FPTest, FixedHandler) {
struct handler : fmt::internal::fixed_handler {
char buffer[10];
handler(int prec = 0) : fmt::internal::fixed_handler() {
buf = buffer;
precision = prec;
}
};
int exp = 0;
handler().on_digit('0', 100, 99, 0, exp, false);
EXPECT_THROW(handler().on_digit('0', 100, 100, 0, exp, false),
assertion_failure);
namespace digits = fmt::internal::digits;
EXPECT_EQ(handler(1).on_digit('0', 100, 10, 10, exp, false), digits::done);
// Check that divisor - error doesn't overflow.
EXPECT_EQ(handler(1).on_digit('0', 100, 10, 101, exp, false), digits::error);
// Check that 2 * error doesn't overflow.
uint64_t max = max_value<uint64_t>();
EXPECT_EQ(handler(1).on_digit('0', max, 10, max - 1, exp, false),
digits::error);
}
TEST(FPTest, GrisuFormatCompilesWithNonIEEEDouble) {
fmt::memory_buffer buf;
grisu2_format(4.2f, buf, fmt::core_format_specs());
format_float(0.42, -1, fmt::internal::float_specs(), buf);
}
template <typename T>
struct ValueExtractor: fmt::internal::function<T> {
T operator()(T value) {
return value;
}
template <typename T> struct value_extractor {
T operator()(T value) { return value; }
template <typename U>
FMT_NORETURN T operator()(U) {
template <typename U> FMT_NORETURN T operator()(U) {
throw std::runtime_error(fmt::format("invalid type {}", typeid(U).name()));
}
#if FMT_USE_INT128
// Apple Clang does not define typeid for __int128_t and __uint128_t.
FMT_NORETURN T operator()(fmt::internal::int128_t) {
throw std::runtime_error("invalid type __int128_t");
}
FMT_NORETURN T operator()(fmt::internal::uint128_t) {
throw std::runtime_error("invalid type __uint128_t");
}
#endif
};
TEST(FormatTest, ArgConverter) {
long long value = std::numeric_limits<long long>::max();
long long value = max_value<long long>();
auto arg = fmt::internal::make_arg<fmt::format_context>(value);
visit(fmt::internal::arg_converter<long long, fmt::format_context>(arg, 'd'),
fmt::visit_format_arg(
fmt::internal::arg_converter<long long, fmt::format_context>(arg, 'd'),
arg);
EXPECT_EQ(value, visit(ValueExtractor<long long>(), arg));
EXPECT_EQ(value, fmt::visit_format_arg(value_extractor<long long>(), arg));
}
TEST(FormatTest, FormatNegativeNaN) {
@ -136,11 +358,11 @@ TEST(FormatTest, FormatNegativeNaN) {
}
TEST(FormatTest, StrError) {
char *message = FMT_NULL;
char* message = nullptr;
char buffer[BUFFER_SIZE];
EXPECT_ASSERT(fmt::safe_strerror(EDOM, message = FMT_NULL, 0),
EXPECT_ASSERT(fmt::internal::safe_strerror(EDOM, message = nullptr, 0),
"invalid buffer");
EXPECT_ASSERT(fmt::safe_strerror(EDOM, message = buffer, 0),
EXPECT_ASSERT(fmt::internal::safe_strerror(EDOM, message = buffer, 0),
"invalid buffer");
buffer[0] = 'x';
#if defined(_GNU_SOURCE) && !defined(__COVERITY__)
@ -151,17 +373,19 @@ TEST(FormatTest, StrError) {
int error_code = EDOM;
#endif
int result = fmt::safe_strerror(error_code, message = buffer, BUFFER_SIZE);
int result =
fmt::internal::safe_strerror(error_code, message = buffer, BUFFER_SIZE);
EXPECT_EQ(result, 0);
std::size_t message_size = std::strlen(message);
EXPECT_GE(BUFFER_SIZE - 1u, message_size);
EXPECT_EQ(get_system_error(error_code), message);
// safe_strerror never uses buffer on MinGW.
#ifndef __MINGW32__
result = fmt::safe_strerror(error_code, message = buffer, message_size);
#if !defined(__MINGW32__) && !defined(__sun)
result =
fmt::internal::safe_strerror(error_code, message = buffer, message_size);
EXPECT_EQ(ERANGE, result);
result = fmt::safe_strerror(error_code, message = buffer, 1);
result = fmt::internal::safe_strerror(error_code, message = buffer, 1);
EXPECT_EQ(buffer, message); // Message should point to buffer.
EXPECT_EQ(ERANGE, result);
EXPECT_STREQ("", message);
@ -173,14 +397,14 @@ TEST(FormatTest, FormatErrorCode) {
{
fmt::memory_buffer buffer;
format_to(buffer, "garbage");
fmt::format_error_code(buffer, 42, "test");
fmt::internal::format_error_code(buffer, 42, "test");
EXPECT_EQ("test: " + msg, to_string(buffer));
}
{
fmt::memory_buffer buffer;
std::string prefix(
fmt::inline_buffer_size - msg.size() - sep.size() + 1, 'x');
fmt::format_error_code(buffer, 42, prefix);
std::string prefix(fmt::inline_buffer_size - msg.size() - sep.size() + 1,
'x');
fmt::internal::format_error_code(buffer, 42, prefix);
EXPECT_EQ(msg, to_string(buffer));
}
int codes[] = {42, -1};
@ -188,59 +412,49 @@ TEST(FormatTest, FormatErrorCode) {
// Test maximum buffer size.
msg = fmt::format("error {}", codes[i]);
fmt::memory_buffer buffer;
std::string prefix(
fmt::inline_buffer_size - msg.size() - sep.size(), 'x');
fmt::format_error_code(buffer, codes[i], prefix);
std::string prefix(fmt::inline_buffer_size - msg.size() - sep.size(), 'x');
fmt::internal::format_error_code(buffer, codes[i], prefix);
EXPECT_EQ(prefix + sep + msg, to_string(buffer));
std::size_t size = fmt::inline_buffer_size;
EXPECT_EQ(size, buffer.size());
buffer.resize(0);
// Test with a message that doesn't fit into the buffer.
prefix += 'x';
fmt::format_error_code(buffer, codes[i], prefix);
fmt::internal::format_error_code(buffer, codes[i], prefix);
EXPECT_EQ(msg, to_string(buffer));
}
}
TEST(FormatTest, CountCodePoints) {
EXPECT_EQ(4, fmt::internal::count_code_points(fmt::u8string_view("ёжик")));
#ifndef __cpp_char8_t
using fmt::char8_t;
#endif
EXPECT_EQ(
4, fmt::internal::count_code_points(
fmt::basic_string_view<fmt::internal::char8_type>(
reinterpret_cast<const fmt::internal::char8_type*>("ёжик"))));
}
TEST(ColorsTest, Colors) {
EXPECT_WRITE(stdout, fmt::print(fg(fmt::rgb(255, 20, 30)), "rgb(255,20,30)"),
"\x1b[38;2;255;020;030mrgb(255,20,30)\x1b[0m");
EXPECT_WRITE(stdout, fmt::print(fg(fmt::color::blue), "blue"),
"\x1b[38;2;000;000;255mblue\x1b[0m");
EXPECT_WRITE(
stdout,
fmt::print(fg(fmt::color::blue) | bg(fmt::color::red), "two color"),
"\x1b[38;2;000;000;255m\x1b[48;2;255;000;000mtwo color\x1b[0m");
EXPECT_WRITE(stdout, fmt::print(fmt::emphasis::bold, "bold"),
"\x1b[1mbold\x1b[0m");
EXPECT_WRITE(stdout, fmt::print(fmt::emphasis::italic, "italic"),
"\x1b[3mitalic\x1b[0m");
EXPECT_WRITE(stdout, fmt::print(fmt::emphasis::underline, "underline"),
"\x1b[4munderline\x1b[0m");
EXPECT_WRITE(stdout,
fmt::print(fmt::emphasis::strikethrough, "strikethrough"),
"\x1b[9mstrikethrough\x1b[0m");
EXPECT_WRITE(
stdout,
fmt::print(fg(fmt::color::blue) | fmt::emphasis::bold, "blue/bold"),
"\x1b[1m\x1b[38;2;000;000;255mblue/bold\x1b[0m");
EXPECT_WRITE(stderr, fmt::print(stderr, fmt::emphasis::bold, "bold error"),
"\x1b[1mbold error\x1b[0m");
EXPECT_WRITE(stderr, fmt::print(stderr, fg(fmt::color::blue), "blue log"),
"\x1b[38;2;000;000;255mblue log\x1b[0m");
EXPECT_WRITE(stdout, fmt::print(fmt::text_style(), "hi"), "hi");
EXPECT_WRITE(stdout, fmt::print(fg(fmt::terminal_color::red), "tred"),
"\x1b[31mtred\x1b[0m");
EXPECT_WRITE(stdout, fmt::print(bg(fmt::terminal_color::cyan), "tcyan"),
"\x1b[46mtcyan\x1b[0m");
EXPECT_WRITE(stdout,
fmt::print(fg(fmt::terminal_color::bright_green), "tbgreen"),
"\x1b[92mtbgreen\x1b[0m");
EXPECT_WRITE(stdout,
fmt::print(bg(fmt::terminal_color::bright_magenta), "tbmagenta"),
"\x1b[105mtbmagenta\x1b[0m");
// Tests fmt::internal::count_digits for integer type Int.
template <typename Int> void test_count_digits() {
for (Int i = 0; i < 10; ++i) EXPECT_EQ(1u, fmt::internal::count_digits(i));
for (Int i = 1, n = 1, end = max_value<Int>() / 10; n <= end; ++i) {
n *= 10;
EXPECT_EQ(i, fmt::internal::count_digits(n - 1));
EXPECT_EQ(i + 1, fmt::internal::count_digits(n));
}
}
TEST(UtilTest, CountDigits) {
test_count_digits<uint32_t>();
test_count_digits<uint64_t>();
}
TEST(UtilTest, WriteUIntPtr) {
fmt::memory_buffer buf;
fmt::internal::writer writer(buf);
writer.write_pointer(
fmt::internal::fallback_uintptr(reinterpret_cast<void*>(0xface)),
nullptr);
EXPECT_EQ("0xface", to_string(buf));
}

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3
test/fuzzing/.gitignore vendored Normal file
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@ -0,0 +1,3 @@
# ignore artifacts from the build.sh script
build-*/

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@ -0,0 +1,38 @@
# Copyright (c) 2019, Paul Dreik
# License: see LICENSE.rst in the fmt root directory
# settings this links in a main. useful for reproducing,
# kcov, gdb, afl, valgrind.
# (note that libFuzzer can also reproduce, just pass it the files)
option(FMT_FUZZ_LINKMAIN "enables the reproduce mode, instead of libFuzzer" On)
# For oss-fuzz - insert $LIB_FUZZING_ENGINE into the link flags, but only for
# the fuzz targets, otherwise the cmake configuration step fails.
set(FMT_FUZZ_LDFLAGS "" CACHE STRING "LDFLAGS for the fuzz targets")
# Find all fuzzers.
set(SOURCES
chrono_duration.cpp
named_arg.cpp
one_arg.cpp
sprintf.cpp
two_args.cpp
)
macro(implement_fuzzer sourcefile)
get_filename_component(basename ${sourcefile} NAME_WE)
set(name fuzzer_${basename})
add_executable(${name} ${sourcefile} fuzzer_common.h)
if (FMT_FUZZ_LINKMAIN)
target_sources(${name} PRIVATE main.cpp)
endif ()
target_link_libraries(${name} PRIVATE fmt)
if (FMT_FUZZ_LDFLAGS)
target_link_libraries(${name} PRIVATE ${FMT_FUZZ_LDFLAGS})
endif ()
target_compile_features(${name} PRIVATE cxx_generic_lambdas)
endmacro ()
foreach (X IN ITEMS ${SOURCES})
implement_fuzzer(${X})
endforeach ()

43
test/fuzzing/README.md Normal file
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@ -0,0 +1,43 @@
# FMT Fuzzer
Fuzzing has revealed [several bugs](https://github.com/fmtlib/fmt/issues?&q=is%3Aissue+fuzz)
in fmt. It is a part of the continous fuzzing at
[oss-fuzz](https://github.com/google/oss-fuzz).
The source code is modified to make the fuzzing possible without locking up on
resource exhaustion:
```cpp
#ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION
if(spec.precision>100000) {
throw std::runtime_error("fuzz mode - avoiding large precision");
}
#endif
```
This macro is the defacto standard for making fuzzing practically possible, see
[the libFuzzer documentation](https://llvm.org/docs/LibFuzzer.html#fuzzer-friendly-build-mode).
## Running the fuzzers locally
There is a [helper script](build.sh) to build the fuzzers, which has only been
tested on Debian and Ubuntu linux so far. There should be no problems fuzzing on
Windows (using clang>=8) or on Mac, but the script will probably not work out of
the box.
Something along
```sh
mkdir build
cd build
export CXX=clang++
export CXXFLAGS="-fsanitize=fuzzer-no-link -DFUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION= -g"
cmake .. -DFMT_SAFE_DURATION_CAST=On -DFMT_FUZZ=On -DFMT_FUZZ_LINKMAIN=Off -DFMT_FUZZ_LDFLAGS="-fsanitize=fuzzer"
cmake --build .
```
should work to build the fuzzers for all platforms which clang supports.
Execute a fuzzer with for instance
```sh
cd build
export UBSAN_OPTIONS=halt_on_error=1
mkdir out_chrono
bin/fuzzer_chrono_duration out_chrono
```

110
test/fuzzing/build.sh Executable file
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@ -0,0 +1,110 @@
#!/bin/sh
#
# Creates fuzzer builds of various kinds
# - reproduce mode (no fuzzing, just enables replaying data through the fuzzers)
# - oss-fuzz emulated mode (makes sure a simulated invocation by oss-fuzz works)
# - libFuzzer build (you will need clang)
# - afl build (you will need afl)
#
#
# Copyright (c) 2019 Paul Dreik
#
# License: see LICENSE.rst in the fmt root directory
set -e
me=$(basename $0)
root=$(readlink -f "$(dirname "$0")/../..")
echo $me: root=$root
here=$(pwd)
CXXFLAGSALL="-DFUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION= -g"
CMAKEFLAGSALL="$root -GNinja -DCMAKE_BUILD_TYPE=Debug -DFMT_DOC=Off -DFMT_TEST=Off -DFMT_FUZZ=On -DCMAKE_CXX_STANDARD=17"
#builds the fuzzers as one would do if using afl or just making
#binaries for reproducing.
builddir=$here/build-fuzzers-reproduce
mkdir -p $builddir
cd $builddir
CXX="ccache g++" CXXFLAGS="$CXXFLAGSALL" cmake \
$CMAKEFLAGSALL
cmake --build $builddir
#for performance analysis of the fuzzers
builddir=$here/build-fuzzers-perfanalysis
mkdir -p $builddir
cd $builddir
CXX="ccache g++" CXXFLAGS="$CXXFLAGSALL -g" cmake \
$CMAKEFLAGSALL \
-DFMT_FUZZ_LINKMAIN=On \
-DCMAKE_BUILD_TYPE=Release
cmake --build $builddir
#builds the fuzzers as oss-fuzz does
builddir=$here/build-fuzzers-ossfuzz
mkdir -p $builddir
cd $builddir
CXX="clang++" \
CXXFLAGS="$CXXFLAGSALL -fsanitize=fuzzer-no-link" cmake \
cmake $CMAKEFLAGSALL \
-DFMT_FUZZ_LINKMAIN=Off \
-DFMT_FUZZ_LDFLAGS="-fsanitize=fuzzer"
cmake --build $builddir
#builds fuzzers for local fuzzing with libfuzzer with asan+usan
builddir=$here/build-fuzzers-libfuzzer
mkdir -p $builddir
cd $builddir
CXX="clang++" \
CXXFLAGS="$CXXFLAGSALL -fsanitize=fuzzer-no-link,address,undefined" cmake \
cmake $CMAKEFLAGSALL \
-DFMT_FUZZ_LINKMAIN=Off \
-DFMT_FUZZ_LDFLAGS="-fsanitize=fuzzer"
cmake --build $builddir
#builds fuzzers for local fuzzing with libfuzzer with asan only
builddir=$here/build-fuzzers-libfuzzer-addr
mkdir -p $builddir
cd $builddir
CXX="clang++" \
CXXFLAGS="$CXXFLAGSALL -fsanitize=fuzzer-no-link,undefined" cmake \
cmake $CMAKEFLAGSALL \
-DFMT_FUZZ_LINKMAIN=Off \
-DFMT_FUZZ_LDFLAGS="-fsanitize=fuzzer"
cmake --build $builddir
#builds a fast fuzzer for making coverage fast
builddir=$here/build-fuzzers-fast
mkdir -p $builddir
cd $builddir
CXX="clang++" \
CXXFLAGS="$CXXFLAGSALL -fsanitize=fuzzer-no-link -O3" cmake \
cmake $CMAKEFLAGSALL \
-DFMT_FUZZ_LINKMAIN=Off \
-DFMT_FUZZ_LDFLAGS="-fsanitize=fuzzer" \
-DCMAKE_BUILD_TYPE=Release
cmake --build $builddir
#builds fuzzers for local fuzzing with afl
builddir=$here/build-fuzzers-afl
mkdir -p $builddir
cd $builddir
CXX="afl-g++" \
CXXFLAGS="$CXXFLAGSALL -fsanitize=address,undefined" \
cmake $CMAKEFLAGSALL \
-DFMT_FUZZ_LINKMAIN=On
cmake --build $builddir
echo $me: all good

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@ -0,0 +1,152 @@
// Copyright (c) 2019, Paul Dreik
// License: see LICENSE.rst in the fmt root directory
#include <fmt/chrono.h>
#include <cstdint>
#include <limits>
#include <stdexcept>
#include <type_traits>
#include <vector>
#include "fuzzer_common.h"
template <typename Item, typename Ratio>
void invoke_inner(fmt::string_view formatstring, const Item item) {
const std::chrono::duration<Item, Ratio> value(item);
try {
#if FMT_FUZZ_FORMAT_TO_STRING
std::string message = fmt::format(formatstring, value);
#else
fmt::memory_buffer buf;
fmt::format_to(buf, formatstring, value);
#endif
} catch (std::exception& /*e*/) {
}
}
// Item is the underlying type for duration (int, long etc)
template <typename Item>
void invoke_outer(const uint8_t* Data, std::size_t Size, const int scaling) {
// always use a fixed location of the data
using fmt_fuzzer::Nfixed;
constexpr auto N = sizeof(Item);
static_assert(N <= Nfixed, "fixed size is too small");
if (Size <= Nfixed + 1) {
return;
}
const Item item = fmt_fuzzer::assignFromBuf<Item>(Data);
// fast forward
Data += Nfixed;
Size -= Nfixed;
// Data is already allocated separately in libFuzzer so reading past
// the end will most likely be detected anyway
const auto formatstring = fmt::string_view(fmt_fuzzer::as_chars(Data), Size);
// doit_impl<Item,std::yocto>(buf.data(),item);
// doit_impl<Item,std::zepto>(buf.data(),item);
switch (scaling) {
case 1:
invoke_inner<Item, std::atto>(formatstring, item);
break;
case 2:
invoke_inner<Item, std::femto>(formatstring, item);
break;
case 3:
invoke_inner<Item, std::pico>(formatstring, item);
break;
case 4:
invoke_inner<Item, std::nano>(formatstring, item);
break;
case 5:
invoke_inner<Item, std::micro>(formatstring, item);
break;
case 6:
invoke_inner<Item, std::milli>(formatstring, item);
break;
case 7:
invoke_inner<Item, std::centi>(formatstring, item);
break;
case 8:
invoke_inner<Item, std::deci>(formatstring, item);
break;
case 9:
invoke_inner<Item, std::deca>(formatstring, item);
break;
case 10:
invoke_inner<Item, std::kilo>(formatstring, item);
break;
case 11:
invoke_inner<Item, std::mega>(formatstring, item);
break;
case 12:
invoke_inner<Item, std::giga>(formatstring, item);
break;
case 13:
invoke_inner<Item, std::tera>(formatstring, item);
break;
case 14:
invoke_inner<Item, std::peta>(formatstring, item);
break;
case 15:
invoke_inner<Item, std::exa>(formatstring, item);
}
// doit_impl<Item,std::zeta>(buf.data(),item);
// doit_impl<Item,std::yotta>(buf.data(),item);
}
extern "C" int LLVMFuzzerTestOneInput(const uint8_t* Data, std::size_t Size) {
if (Size <= 4) {
return 0;
}
const auto representation = Data[0];
const auto scaling = Data[1];
Data += 2;
Size -= 2;
switch (representation) {
case 1:
invoke_outer<char>(Data, Size, scaling);
break;
case 2:
invoke_outer<unsigned char>(Data, Size, scaling);
break;
case 3:
invoke_outer<signed char>(Data, Size, scaling);
break;
case 4:
invoke_outer<short>(Data, Size, scaling);
break;
case 5:
invoke_outer<unsigned short>(Data, Size, scaling);
break;
case 6:
invoke_outer<int>(Data, Size, scaling);
break;
case 7:
invoke_outer<unsigned int>(Data, Size, scaling);
break;
case 8:
invoke_outer<long>(Data, Size, scaling);
break;
case 9:
invoke_outer<unsigned long>(Data, Size, scaling);
break;
case 10:
invoke_outer<float>(Data, Size, scaling);
break;
case 11:
invoke_outer<double>(Data, Size, scaling);
break;
case 12:
invoke_outer<long double>(Data, Size, scaling);
break;
default:
break;
}
return 0;
}

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@ -0,0 +1,67 @@
#ifndef FUZZER_COMMON_H
#define FUZZER_COMMON_H
// Copyright (c) 2019, Paul Dreik
// License: see LICENSE.rst in the fmt root directory
#include <cstdint> // std::uint8_t
#include <cstring> // memcpy
#include <type_traits> // trivially copyable
// one can format to either a string, or a buf. buf is faster,
// but one may be interested in formatting to a string instead to
// verify it works as intended. to avoid a combinatoric explosion,
// select this at compile time instead of dynamically from the fuzz data
#define FMT_FUZZ_FORMAT_TO_STRING 0
// if fmt is given a buffer that is separately allocated,
// chances that address sanitizer detects out of bound reads is
// much higher. However, it slows down the fuzzing.
#define FMT_FUZZ_SEPARATE_ALLOCATION 1
// To let the the fuzzer mutation be efficient at cross pollinating
// between different types, use a fixed size format.
// The same bit pattern, interpreted as another type,
// is likely interesting.
// For this, we must know the size of the largest possible type in use.
// There are some problems on travis, claiming Nfixed is not a constant
// expression which seems to be an issue with older versions of libstdc++
#if _GLIBCXX_RELEASE >= 7
# include <algorithm>
namespace fmt_fuzzer {
constexpr auto Nfixed = std::max(sizeof(long double), sizeof(std::intmax_t));
}
#else
namespace fmt_fuzzer {
constexpr auto Nfixed = 16;
}
#endif
namespace fmt_fuzzer {
// view data as a c char pointer.
template <typename T> inline const char* as_chars(const T* data) {
return static_cast<const char*>(static_cast<const void*>(data));
}
// view data as a byte pointer
template <typename T> inline const std::uint8_t* as_bytes(const T* data) {
return static_cast<const std::uint8_t*>(static_cast<const void*>(data));
}
// blits bytes from Data to form an (assumed trivially constructible) object
// of type Item
template <class Item> inline Item assignFromBuf(const std::uint8_t* Data) {
Item item{};
std::memcpy(&item, Data, sizeof(Item));
return item;
}
// reads a boolean value by looking at the first byte from Data
template <> inline bool assignFromBuf<bool>(const std::uint8_t* Data) {
return !!Data[0];
}
} // namespace fmt_fuzzer
#endif // FUZZER_COMMON_H

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@ -0,0 +1,21 @@
#include <cassert>
#include <fstream>
#include <sstream>
#include <vector>
#include "fuzzer_common.h"
extern "C" int LLVMFuzzerTestOneInput(const uint8_t* Data, std::size_t Size);
int main(int argc, char* argv[]) {
for (int i = 1; i < argc; ++i) {
std::ifstream in(argv[i]);
assert(in);
in.seekg(0, std::ios_base::end);
const auto pos = in.tellg();
assert(pos >= 0);
in.seekg(0, std::ios_base::beg);
std::vector<char> buf(static_cast<std::size_t>(pos));
in.read(buf.data(), static_cast<long>(buf.size()));
assert(in.gcount() == pos);
LLVMFuzzerTestOneInput(fmt_fuzzer::as_bytes(buf.data()), buf.size());
}
}

128
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@ -0,0 +1,128 @@
// Copyright (c) 2019, Paul Dreik
// License: see LICENSE.rst in the fmt root directory
#include <fmt/chrono.h>
#include <fmt/core.h>
#include <cstdint>
#include <stdexcept>
#include <type_traits>
#include <vector>
#include "fuzzer_common.h"
template <typename Item1>
void invoke_fmt(const uint8_t* Data, std::size_t Size, unsigned int argsize) {
constexpr auto N1 = sizeof(Item1);
static_assert(N1 <= fmt_fuzzer::Nfixed, "Nfixed too small");
if (Size <= fmt_fuzzer::Nfixed) {
return;
}
const Item1 item1 = fmt_fuzzer::assignFromBuf<Item1>(Data);
Data += fmt_fuzzer::Nfixed;
Size -= fmt_fuzzer::Nfixed;
// how many chars should be used for the argument name?
if (argsize <= 0 || argsize >= Size) {
return;
}
// allocating buffers separately is slower, but increases chances
// of detecting memory errors
#if FMT_FUZZ_SEPARATE_ALLOCATION
std::vector<char> argnamebuffer(argsize);
std::memcpy(argnamebuffer.data(), Data, argsize);
auto argname = fmt::string_view(argnamebuffer.data(), argsize);
#else
auto argname = fmt::string_view(fmt_fuzzer::as_chars(Data), argsize);
#endif
Data += argsize;
Size -= argsize;
#if FMT_FUZZ_SEPARATE_ALLOCATION
// allocates as tight as possible, making it easier to catch buffer overruns.
std::vector<char> fmtstringbuffer(Size);
std::memcpy(fmtstringbuffer.data(), Data, Size);
auto fmtstring = fmt::string_view(fmtstringbuffer.data(), Size);
#else
auto fmtstring = fmt::string_view(fmt_fuzzer::as_chars(Data), Size);
#endif
#if FMT_FUZZ_FORMAT_TO_STRING
std::string message = fmt::format(fmtstring, fmt::arg(argname, item1));
#else
fmt::memory_buffer outbuf;
fmt::format_to(outbuf, fmtstring, fmt::arg(argname, item1));
#endif
}
// for dynamic dispatching to an explicit instantiation
template <typename Callback> void invoke(int index, Callback callback) {
switch (index) {
case 0:
callback(bool{});
break;
case 1:
callback(char{});
break;
case 2:
using sc = signed char;
callback(sc{});
break;
case 3:
using uc = unsigned char;
callback(uc{});
break;
case 4:
callback(short{});
break;
case 5:
using us = unsigned short;
callback(us{});
break;
case 6:
callback(int{});
break;
case 7:
callback(unsigned{});
break;
case 8:
callback(long{});
break;
case 9:
using ul = unsigned long;
callback(ul{});
break;
case 10:
callback(float{});
break;
case 11:
callback(double{});
break;
case 12:
using LD = long double;
callback(LD{});
break;
}
}
extern "C" int LLVMFuzzerTestOneInput(const uint8_t* Data, std::size_t Size) {
if (Size <= 3) {
return 0;
}
// switch types depending on the first byte of the input
const auto first = Data[0] & 0x0F;
const unsigned int second = (Data[0] & 0xF0) >> 4;
Data++;
Size--;
auto outerfcn = [=](auto param1) {
invoke_fmt<decltype(param1)>(Data, Size, second);
};
try {
invoke(first, outerfcn);
} catch (std::exception& /*e*/) {
}
return 0;
}

131
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@ -0,0 +1,131 @@
// Copyright (c) 2019, Paul Dreik
// License: see LICENSE.rst in the fmt root directory
#include <fmt/core.h>
#include <cstdint>
#include <stdexcept>
#include <type_traits>
#include <vector>
#include <fmt/chrono.h>
#include "fuzzer_common.h"
using fmt_fuzzer::Nfixed;
template <typename Item>
void invoke_fmt(const uint8_t* Data, std::size_t Size) {
constexpr auto N = sizeof(Item);
static_assert(N <= Nfixed, "Nfixed is too small");
if (Size <= Nfixed) {
return;
}
const Item item = fmt_fuzzer::assignFromBuf<Item>(Data);
Data += Nfixed;
Size -= Nfixed;
#if FMT_FUZZ_SEPARATE_ALLOCATION
// allocates as tight as possible, making it easier to catch buffer overruns.
std::vector<char> fmtstringbuffer(Size);
std::memcpy(fmtstringbuffer.data(), Data, Size);
auto fmtstring = fmt::string_view(fmtstringbuffer.data(), Size);
#else
auto fmtstring = fmt::string_view(fmt_fuzzer::as_chars(Data), Size);
#endif
#if FMT_FUZZ_FORMAT_TO_STRING
std::string message = fmt::format(fmtstring, item);
#else
fmt::memory_buffer message;
fmt::format_to(message, fmtstring, item);
#endif
}
void invoke_fmt_time(const uint8_t* Data, std::size_t Size) {
using Item = std::time_t;
constexpr auto N = sizeof(Item);
static_assert(N <= Nfixed, "Nfixed too small");
if (Size <= Nfixed) {
return;
}
const Item item = fmt_fuzzer::assignFromBuf<Item>(Data);
Data += Nfixed;
Size -= Nfixed;
#if FMT_FUZZ_SEPARATE_ALLOCATION
// allocates as tight as possible, making it easier to catch buffer overruns.
std::vector<char> fmtstringbuffer(Size);
std::memcpy(fmtstringbuffer.data(), Data, Size);
auto fmtstring = fmt::string_view(fmtstringbuffer.data(), Size);
#else
auto fmtstring = fmt::string_view(fmt_fuzzer::as_chars(Data), Size);
#endif
auto* b = std::localtime(&item);
if (b) {
#if FMT_FUZZ_FORMAT_TO_STRING
std::string message = fmt::format(fmtstring, *b);
#else
fmt::memory_buffer message;
fmt::format_to(message, fmtstring, *b);
#endif
}
}
extern "C" int LLVMFuzzerTestOneInput(const uint8_t* Data, std::size_t Size) {
if (Size <= 3) {
return 0;
}
const auto first = Data[0];
Data++;
Size--;
try {
switch (first) {
case 0:
invoke_fmt<bool>(Data, Size);
break;
case 1:
invoke_fmt<char>(Data, Size);
break;
case 2:
invoke_fmt<unsigned char>(Data, Size);
break;
case 3:
invoke_fmt<signed char>(Data, Size);
break;
case 4:
invoke_fmt<short>(Data, Size);
break;
case 5:
invoke_fmt<unsigned short>(Data, Size);
break;
case 6:
invoke_fmt<int>(Data, Size);
break;
case 7:
invoke_fmt<unsigned int>(Data, Size);
break;
case 8:
invoke_fmt<long>(Data, Size);
break;
case 9:
invoke_fmt<unsigned long>(Data, Size);
break;
case 10:
invoke_fmt<float>(Data, Size);
break;
case 11:
invoke_fmt<double>(Data, Size);
break;
case 12:
invoke_fmt<long double>(Data, Size);
break;
case 13:
invoke_fmt_time(Data, Size);
break;
default:
break;
}
} catch (std::exception& /*e*/) {
}
return 0;
}

116
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@ -0,0 +1,116 @@
// Copyright (c) 2019, Paul Dreik
// License: see LICENSE.rst in the fmt root directory
#include <fmt/format.h>
#include <fmt/printf.h>
#include <cstdint>
#include <stdexcept>
#include "fuzzer_common.h"
using fmt_fuzzer::Nfixed;
template <typename Item1, typename Item2>
void invoke_fmt(const uint8_t* Data, std::size_t Size) {
constexpr auto N1 = sizeof(Item1);
constexpr auto N2 = sizeof(Item2);
static_assert(N1 <= Nfixed, "size1 exceeded");
static_assert(N2 <= Nfixed, "size2 exceeded");
if (Size <= Nfixed + Nfixed) {
return;
}
Item1 item1 = fmt_fuzzer::assignFromBuf<Item1>(Data);
Data += Nfixed;
Size -= Nfixed;
Item2 item2 = fmt_fuzzer::assignFromBuf<Item2>(Data);
Data += Nfixed;
Size -= Nfixed;
auto fmtstring = fmt::string_view(fmt_fuzzer::as_chars(Data), Size);
#if FMT_FUZZ_FORMAT_TO_STRING
std::string message = fmt::format(fmtstring, item1, item2);
#else
fmt::memory_buffer message;
fmt::format_to(message, fmtstring, item1, item2);
#endif
}
// for dynamic dispatching to an explicit instantiation
template <typename Callback> void invoke(int index, Callback callback) {
switch (index) {
case 0:
callback(bool{});
break;
case 1:
callback(char{});
break;
case 2:
using sc = signed char;
callback(sc{});
break;
case 3:
using uc = unsigned char;
callback(uc{});
break;
case 4:
callback(short{});
break;
case 5:
using us = unsigned short;
callback(us{});
break;
case 6:
callback(int{});
break;
case 7:
callback(unsigned{});
break;
case 8:
callback(long{});
break;
case 9:
using ul = unsigned long;
callback(ul{});
break;
case 10:
callback(float{});
break;
case 11:
callback(double{});
break;
case 12:
using LD = long double;
callback(LD{});
break;
case 13:
using ptr = void*;
callback(ptr{});
break;
}
}
extern "C" int LLVMFuzzerTestOneInput(const uint8_t* Data, std::size_t Size) {
if (Size <= 3) {
return 0;
}
// switch types depending on the first byte of the input
const auto first = Data[0] & 0x0F;
const auto second = (Data[0] & 0xF0) >> 4;
Data++;
Size--;
auto outer = [=](auto param1) {
auto inner = [=](auto param2) {
invoke_fmt<decltype(param1), decltype(param2)>(Data, Size);
};
invoke(second, inner);
};
try {
invoke(first, outer);
} catch (std::exception& /*e*/) {
}
return 0;
}

112
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@ -0,0 +1,112 @@
// Copyright (c) 2019, Paul Dreik
// License: see LICENSE.rst in the fmt root directory
#include <fmt/format.h>
#include <cstdint>
#include <stdexcept>
#include <type_traits>
#include "fuzzer_common.h"
constexpr auto Nfixed = fmt_fuzzer::Nfixed;
template <typename Item1, typename Item2>
void invoke_fmt(const uint8_t* Data, std::size_t Size) {
constexpr auto N1 = sizeof(Item1);
constexpr auto N2 = sizeof(Item2);
static_assert(N1 <= Nfixed, "size1 exceeded");
static_assert(N2 <= Nfixed, "size2 exceeded");
if (Size <= Nfixed + Nfixed) {
return;
}
const Item1 item1 = fmt_fuzzer::assignFromBuf<Item1>(Data);
Data += Nfixed;
Size -= Nfixed;
const Item2 item2 = fmt_fuzzer::assignFromBuf<Item2>(Data);
Data += Nfixed;
Size -= Nfixed;
auto fmtstring = fmt::string_view(fmt_fuzzer::as_chars(Data), Size);
#if FMT_FUZZ_FORMAT_TO_STRING
std::string message = fmt::format(fmtstring, item1, item2);
#else
fmt::memory_buffer message;
fmt::format_to(message, fmtstring, item1, item2);
#endif
}
// for dynamic dispatching to an explicit instantiation
template <typename Callback> void invoke(int index, Callback callback) {
switch (index) {
case 0:
callback(bool{});
break;
case 1:
callback(char{});
break;
case 2:
using sc = signed char;
callback(sc{});
break;
case 3:
using uc = unsigned char;
callback(uc{});
break;
case 4:
callback(short{});
break;
case 5:
using us = unsigned short;
callback(us{});
break;
case 6:
callback(int{});
break;
case 7:
callback(unsigned{});
break;
case 8:
callback(long{});
break;
case 9:
using ul = unsigned long;
callback(ul{});
break;
case 10:
callback(float{});
break;
case 11:
callback(double{});
break;
case 12:
using LD = long double;
callback(LD{});
break;
}
}
extern "C" int LLVMFuzzerTestOneInput(const uint8_t* Data, std::size_t Size) {
if (Size <= 3) {
return 0;
}
// switch types depending on the first byte of the input
const auto first = Data[0] & 0x0F;
const auto second = (Data[0] & 0xF0) >> 4;
Data++;
Size--;
auto outer = [=](auto param1) {
auto inner = [=](auto param2) {
invoke_fmt<decltype(param1), decltype(param2)>(Data, Size);
};
invoke(second, inner);
};
try {
invoke(first, outer);
} catch (std::exception& /*e*/) {
}
return 0;
}

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75
test/grisu-test.cc Normal file
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@ -0,0 +1,75 @@
// Formatting library for C++ - Grisu tests
//
// Copyright (c) 2012 - present, Victor Zverovich
// All rights reserved.
//
// For the license information refer to format.h.
#include "fmt/format.h"
#include "gtest.h"
static bool reported_skipped;
#undef TEST
#define TEST(test_fixture, test_name) \
void test_fixture##test_name(); \
GTEST_TEST(test_fixture, test_name) { \
if (FMT_USE_GRISU) { \
test_fixture##test_name(); \
} else if (!reported_skipped) { \
reported_skipped = true; \
fmt::print("Skipping Grisu tests.\n"); \
} \
} \
void test_fixture##test_name()
TEST(GrisuTest, NaN) {
auto nan = std::numeric_limits<double>::quiet_NaN();
EXPECT_EQ("nan", fmt::format("{}", nan));
EXPECT_EQ("-nan", fmt::format("{}", -nan));
}
TEST(GrisuTest, Inf) {
auto inf = std::numeric_limits<double>::infinity();
EXPECT_EQ("inf", fmt::format("{}", inf));
EXPECT_EQ("-inf", fmt::format("{}", -inf));
}
TEST(GrisuTest, Zero) { EXPECT_EQ("0.0", fmt::format("{}", 0.0)); }
TEST(GrisuTest, Round) {
EXPECT_EQ("1.9156918820264798e-56",
fmt::format("{}", 1.9156918820264798e-56));
EXPECT_EQ("0.0000", fmt::format("{:.4f}", 7.2809479766055470e-15));
}
TEST(GrisuTest, Prettify) {
EXPECT_EQ("0.0001", fmt::format("{}", 1e-4));
EXPECT_EQ("1e-05", fmt::format("{}", 1e-5));
EXPECT_EQ("9.999e-05", fmt::format("{}", 9.999e-5));
EXPECT_EQ("10000000000.0", fmt::format("{}", 1e10));
EXPECT_EQ("100000000000.0", fmt::format("{}", 1e11));
EXPECT_EQ("12340000000.0", fmt::format("{}", 1234e7));
EXPECT_EQ("12.34", fmt::format("{}", 1234e-2));
EXPECT_EQ("0.001234", fmt::format("{}", 1234e-6));
EXPECT_EQ("0.1", fmt::format("{}", 0.1f));
EXPECT_EQ("0.10000000149011612", fmt::format("{}", double(0.1f)));
}
TEST(GrisuTest, ZeroPrecision) { EXPECT_EQ("1", fmt::format("{:.0}", 1.0)); }
TEST(GrisuTest, Fallback) {
EXPECT_EQ("1e+23", fmt::format("{}", 1e23));
EXPECT_EQ("9e-265", fmt::format("{}", 9e-265));
EXPECT_EQ("5.423717798060526e+125",
fmt::format("{}", 5.423717798060526e+125));
EXPECT_EQ("1.372371880954233e-288",
fmt::format("{}", 1.372371880954233e-288));
EXPECT_EQ("55388492.622190244", fmt::format("{}", 55388492.622190244));
EXPECT_EQ("2.2506787569811123e-253",
fmt::format("{}", 2.2506787569811123e-253));
EXPECT_EQ("1103618912042992.8", fmt::format("{}", 1103618912042992.8));
// pow(2, -25) - assymetric boundaries:
EXPECT_EQ("2.9802322387695312e-08",
fmt::format("{}", 2.9802322387695312e-08));
}

View file

@ -7,10 +7,11 @@
#include "gtest-extra.h"
#include <cstring>
#include <algorithm>
#include <stdexcept>
#include <gtest/gtest-spi.h>
#include <algorithm>
#include <cstring>
#include <memory>
#include <stdexcept>
#if defined(_WIN32) && !defined(__MINGW32__)
# include <crtdbg.h> // for _CrtSetReportMode
@ -18,12 +19,10 @@
#include "util.h"
using testing::internal::scoped_ptr;
namespace {
// This is used to suppress coverity warnings about untrusted values.
std::string sanitize(const std::string &s) {
std::string sanitize(const std::string& s) {
std::string result;
for (std::string::const_iterator i = s.begin(), end = s.end(); i != end; ++i)
result.push_back(static_cast<char>(*i & 0xff));
@ -53,11 +52,9 @@ int SingleEvaluationTest::b_;
void do_nothing() {}
void throw_exception() {
throw std::runtime_error("test");
}
FMT_NORETURN void throw_exception() { throw std::runtime_error("test"); }
void throw_system_error() {
FMT_NORETURN void throw_system_error() {
throw fmt::system_error(EDOM, "test");
}
@ -72,42 +69,41 @@ TEST_F(SingleEvaluationTest, FailedEXPECT_THROW_MSG) {
// Tests that when EXPECT_SYSTEM_ERROR fails, it evaluates its message argument
// exactly once.
TEST_F(SingleEvaluationTest, FailedEXPECT_SYSTEM_ERROR) {
EXPECT_NONFATAL_FAILURE(
EXPECT_SYSTEM_ERROR(throw_system_error(), EDOM, p_++), "01234");
EXPECT_EQ(s_ + 1, p_);
}
// Tests that when EXPECT_WRITE fails, it evaluates its message argument
// exactly once.
TEST_F(SingleEvaluationTest, FailedEXPECT_WRITE) {
EXPECT_NONFATAL_FAILURE(
EXPECT_WRITE(stdout, std::printf("test"), p_++), "01234");
EXPECT_NONFATAL_FAILURE(EXPECT_SYSTEM_ERROR(throw_system_error(), EDOM, p_++),
"01234");
EXPECT_EQ(s_ + 1, p_);
}
// Tests that assertion arguments are evaluated exactly once.
TEST_F(SingleEvaluationTest, ExceptionTests) {
// successful EXPECT_THROW_MSG
EXPECT_THROW_MSG({ // NOLINT
EXPECT_THROW_MSG(
{ // NOLINT
a_++;
throw_exception();
}, std::exception, (b_++, "test"));
},
std::exception, (b_++, "test"));
EXPECT_EQ(1, a_);
EXPECT_EQ(1, b_);
// failed EXPECT_THROW_MSG, throws different type
EXPECT_NONFATAL_FAILURE(EXPECT_THROW_MSG({ // NOLINT
EXPECT_NONFATAL_FAILURE(EXPECT_THROW_MSG(
{ // NOLINT
a_++;
throw_exception();
}, std::logic_error, (b_++, "test")), "throws a different type");
},
std::logic_error, (b_++, "test")),
"throws a different type");
EXPECT_EQ(2, a_);
EXPECT_EQ(2, b_);
// failed EXPECT_THROW_MSG, throws an exception with different message
EXPECT_NONFATAL_FAILURE(EXPECT_THROW_MSG({ // NOLINT
EXPECT_NONFATAL_FAILURE(EXPECT_THROW_MSG(
{ // NOLINT
a_++;
throw_exception();
}, std::exception, (b_++, "other")),
},
std::exception, (b_++, "other")),
"throws an exception with a different message");
EXPECT_EQ(3, a_);
EXPECT_EQ(3, b_);
@ -121,56 +117,95 @@ TEST_F(SingleEvaluationTest, ExceptionTests) {
TEST_F(SingleEvaluationTest, SystemErrorTests) {
// successful EXPECT_SYSTEM_ERROR
EXPECT_SYSTEM_ERROR({ // NOLINT
EXPECT_SYSTEM_ERROR(
{ // NOLINT
a_++;
throw_system_error();
}, EDOM, (b_++, "test"));
},
EDOM, (b_++, "test"));
EXPECT_EQ(1, a_);
EXPECT_EQ(1, b_);
// failed EXPECT_SYSTEM_ERROR, throws different type
EXPECT_NONFATAL_FAILURE(EXPECT_SYSTEM_ERROR({ // NOLINT
EXPECT_NONFATAL_FAILURE(EXPECT_SYSTEM_ERROR(
{ // NOLINT
a_++;
throw_exception();
}, EDOM, (b_++, "test")), "throws a different type");
},
EDOM, (b_++, "test")),
"throws a different type");
EXPECT_EQ(2, a_);
EXPECT_EQ(2, b_);
// failed EXPECT_SYSTEM_ERROR, throws an exception with different message
EXPECT_NONFATAL_FAILURE(EXPECT_SYSTEM_ERROR({ // NOLINT
EXPECT_NONFATAL_FAILURE(EXPECT_SYSTEM_ERROR(
{ // NOLINT
a_++;
throw_system_error();
}, EDOM, (b_++, "other")),
},
EDOM, (b_++, "other")),
"throws an exception with a different message");
EXPECT_EQ(3, a_);
EXPECT_EQ(3, b_);
// failed EXPECT_SYSTEM_ERROR, throws nothing
EXPECT_NONFATAL_FAILURE(
EXPECT_SYSTEM_ERROR(a_++, EDOM, (b_++, "test")), "throws nothing");
EXPECT_NONFATAL_FAILURE(EXPECT_SYSTEM_ERROR(a_++, EDOM, (b_++, "test")),
"throws nothing");
EXPECT_EQ(4, a_);
EXPECT_EQ(4, b_);
}
#if FMT_USE_FCNTL
// Tests that when EXPECT_WRITE fails, it evaluates its message argument
// exactly once.
TEST_F(SingleEvaluationTest, FailedEXPECT_WRITE) {
EXPECT_NONFATAL_FAILURE(EXPECT_WRITE(stdout, std::printf("test"), p_++),
"01234");
EXPECT_EQ(s_ + 1, p_);
}
// Tests that assertion arguments are evaluated exactly once.
TEST_F(SingleEvaluationTest, WriteTests) {
// successful EXPECT_WRITE
EXPECT_WRITE(stdout, { // NOLINT
EXPECT_WRITE(stdout,
{ // NOLINT
a_++;
std::printf("test");
}, (b_++, "test"));
},
(b_++, "test"));
EXPECT_EQ(1, a_);
EXPECT_EQ(1, b_);
// failed EXPECT_WRITE
EXPECT_NONFATAL_FAILURE(EXPECT_WRITE(stdout, { // NOLINT
EXPECT_NONFATAL_FAILURE(EXPECT_WRITE(stdout,
{ // NOLINT
a_++;
std::printf("test");
}, (b_++, "other")), "Actual: test");
},
(b_++, "other")),
"Actual: test");
EXPECT_EQ(2, a_);
EXPECT_EQ(2, b_);
}
// Tests EXPECT_WRITE.
TEST(ExpectTest, EXPECT_WRITE) {
EXPECT_WRITE(stdout, do_nothing(), "");
EXPECT_WRITE(stdout, std::printf("test"), "test");
EXPECT_WRITE(stderr, std::fprintf(stderr, "test"), "test");
EXPECT_NONFATAL_FAILURE(EXPECT_WRITE(stdout, std::printf("that"), "this"),
"Expected: this\n"
" Actual: that");
}
TEST(StreamingAssertionsTest, EXPECT_WRITE) {
EXPECT_WRITE(stdout, std::printf("test"), "test") << "unexpected failure";
EXPECT_NONFATAL_FAILURE(EXPECT_WRITE(stdout, std::printf("test"), "other")
<< "expected failure",
"expected failure");
}
#endif // FMT_USE_FCNTL
// Tests that the compiler will not complain about unreachable code in the
// EXPECT_THROW_MSG macro.
TEST(ExpectThrowTest, DoesNotGenerateUnreachableCodeWarning) {
@ -179,8 +214,8 @@ TEST(ExpectThrowTest, DoesNotGenerateUnreachableCodeWarning) {
EXPECT_THROW_MSG(throw runtime_error(""), runtime_error, "");
EXPECT_NONFATAL_FAILURE(EXPECT_THROW_MSG(n++, runtime_error, ""), "");
EXPECT_NONFATAL_FAILURE(EXPECT_THROW_MSG(throw 1, runtime_error, ""), "");
EXPECT_NONFATAL_FAILURE(EXPECT_THROW_MSG(
throw runtime_error("a"), runtime_error, "b"), "");
EXPECT_NONFATAL_FAILURE(
EXPECT_THROW_MSG(throw runtime_error("a"), runtime_error, "b"), "");
}
// Tests that the compiler will not complain about unreachable code in the
@ -190,8 +225,9 @@ TEST(ExpectSystemErrorTest, DoesNotGenerateUnreachableCodeWarning) {
EXPECT_SYSTEM_ERROR(throw fmt::system_error(EDOM, "test"), EDOM, "test");
EXPECT_NONFATAL_FAILURE(EXPECT_SYSTEM_ERROR(n++, EDOM, ""), "");
EXPECT_NONFATAL_FAILURE(EXPECT_SYSTEM_ERROR(throw 1, EDOM, ""), "");
EXPECT_NONFATAL_FAILURE(EXPECT_SYSTEM_ERROR(
throw fmt::system_error(EDOM, "aaa"), EDOM, "bbb"), "");
EXPECT_NONFATAL_FAILURE(
EXPECT_SYSTEM_ERROR(throw fmt::system_error(EDOM, "aaa"), EDOM, "bbb"),
"");
}
TEST(AssertionSyntaxTest, ExceptionAssertionBehavesLikeSingleStatement) {
@ -263,23 +299,13 @@ TEST(ExpectTest, EXPECT_SYSTEM_ERROR) {
format_system_error(EDOM, "test")));
}
// Tests EXPECT_WRITE.
TEST(ExpectTest, EXPECT_WRITE) {
EXPECT_WRITE(stdout, do_nothing(), "");
EXPECT_WRITE(stdout, std::printf("test"), "test");
EXPECT_WRITE(stderr, std::fprintf(stderr, "test"), "test");
EXPECT_NONFATAL_FAILURE(
EXPECT_WRITE(stdout, std::printf("that"), "this"),
"Expected: this\n"
" Actual: that");
}
TEST(StreamingAssertionsTest, EXPECT_THROW_MSG) {
EXPECT_THROW_MSG(throw_exception(), std::exception, "test")
<< "unexpected failure";
EXPECT_NONFATAL_FAILURE(
EXPECT_THROW_MSG(throw_exception(), std::exception, "other")
<< "expected failure", "expected failure");
<< "expected failure",
"expected failure");
}
TEST(StreamingAssertionsTest, EXPECT_SYSTEM_ERROR) {
@ -287,15 +313,8 @@ TEST(StreamingAssertionsTest, EXPECT_SYSTEM_ERROR) {
<< "unexpected failure";
EXPECT_NONFATAL_FAILURE(
EXPECT_SYSTEM_ERROR(throw_system_error(), EDOM, "other")
<< "expected failure", "expected failure");
}
TEST(StreamingAssertionsTest, EXPECT_WRITE) {
EXPECT_WRITE(stdout, std::printf("test"), "test")
<< "unexpected failure";
EXPECT_NONFATAL_FAILURE(
EXPECT_WRITE(stdout, std::printf("test"), "other")
<< "expected failure", "expected failure");
<< "expected failure",
"expected failure");
}
TEST(UtilTest, FormatSystemError) {
@ -304,7 +323,7 @@ TEST(UtilTest, FormatSystemError) {
EXPECT_EQ(to_string(out), format_system_error(EDOM, "test message"));
}
#if FMT_USE_FILE_DESCRIPTORS
#if FMT_USE_FCNTL
using fmt::buffered_file;
using fmt::error_code;
@ -340,10 +359,10 @@ TEST(OutputRedirectTest, FlushErrorInCtor) {
// Put a character in a file buffer.
EXPECT_EQ('x', fputc('x', f.get()));
FMT_POSIX(close(write_fd));
scoped_ptr<OutputRedirect> redir{FMT_NULL};
EXPECT_SYSTEM_ERROR_NOASSERT(redir.reset(new OutputRedirect(f.get())),
EBADF, "cannot flush stream");
redir.reset(FMT_NULL);
std::unique_ptr<OutputRedirect> redir{nullptr};
EXPECT_SYSTEM_ERROR_NOASSERT(redir.reset(new OutputRedirect(f.get())), EBADF,
"cannot flush stream");
redir.reset(nullptr);
write_copy.dup2(write_fd); // "undo" close or dtor will fail
}
@ -352,9 +371,10 @@ TEST(OutputRedirectTest, DupErrorInCtor) {
int fd = (f.fileno)();
file copy = file::dup(fd);
FMT_POSIX(close(fd));
scoped_ptr<OutputRedirect> redir{FMT_NULL};
EXPECT_SYSTEM_ERROR_NOASSERT(redir.reset(new OutputRedirect(f.get())),
EBADF, fmt::format("cannot duplicate file descriptor {}", fd));
std::unique_ptr<OutputRedirect> redir{nullptr};
EXPECT_SYSTEM_ERROR_NOASSERT(
redir.reset(new OutputRedirect(f.get())), EBADF,
fmt::format("cannot duplicate file descriptor {}", fd));
copy.dup2(fd); // "undo" close or dtor will fail
}
@ -383,8 +403,8 @@ TEST(OutputRedirectTest, FlushErrorInRestoreAndRead) {
// Put a character in a file buffer.
EXPECT_EQ('x', fputc('x', f.get()));
FMT_POSIX(close(write_fd));
EXPECT_SYSTEM_ERROR_NOASSERT(redir.restore_and_read(),
EBADF, "cannot flush stream");
EXPECT_SYSTEM_ERROR_NOASSERT(redir.restore_and_read(), EBADF,
"cannot flush stream");
write_copy.dup2(write_fd); // "undo" close or dtor will fail
}
@ -394,17 +414,19 @@ TEST(OutputRedirectTest, ErrorInDtor) {
int write_fd = write_end.descriptor();
file write_copy = write_end.dup(write_fd);
buffered_file f = write_end.fdopen("w");
scoped_ptr<OutputRedirect> redir(new OutputRedirect(f.get()));
std::unique_ptr<OutputRedirect> redir(new OutputRedirect(f.get()));
// Put a character in a file buffer.
EXPECT_EQ('x', fputc('x', f.get()));
EXPECT_WRITE(stderr, {
// The close function must be called inside EXPECT_WRITE, otherwise
// the system may recycle closed file descriptor when redirecting the
// output in EXPECT_STDERR and the second close will break output
// redirection.
EXPECT_WRITE(stderr,
{
// The close function must be called inside EXPECT_WRITE,
// otherwise the system may recycle closed file descriptor when
// redirecting the output in EXPECT_STDERR and the second close
// will break output redirection.
FMT_POSIX(close(write_fd));
SUPPRESS_ASSERT(redir.reset(FMT_NULL));
}, format_system_error(EBADF, "cannot flush stream"));
SUPPRESS_ASSERT(redir.reset(nullptr));
},
format_system_error(EBADF, "cannot flush stream"));
write_copy.dup2(write_fd); // "undo" close or dtor of buffered_file will fail
}

View file

@ -7,30 +7,28 @@
#include "gtest-extra.h"
#if FMT_USE_FILE_DESCRIPTORS
#if FMT_USE_FCNTL
using fmt::file;
void OutputRedirect::flush() {
#if EOF != -1
# if EOF != -1
# error "FMT_RETRY assumes return value of -1 indicating failure"
#endif
# endif
int result = 0;
FMT_RETRY(result, fflush(file_));
if (result != 0)
throw fmt::system_error(errno, "cannot flush stream");
if (result != 0) throw fmt::system_error(errno, "cannot flush stream");
}
void OutputRedirect::restore() {
if (original_.descriptor() == -1)
return; // Already restored.
if (original_.descriptor() == -1) return; // Already restored.
flush();
// Restore the original file.
original_.dup2(FMT_POSIX(fileno(file_)));
original_.close();
}
OutputRedirect::OutputRedirect(FILE *f) : file_(f) {
OutputRedirect::OutputRedirect(FILE* f) : file_(f) {
flush();
int fd = FMT_POSIX(fileno(f));
// Create a file object referring to the original file.
@ -45,7 +43,7 @@ OutputRedirect::OutputRedirect(FILE *f) : file_(f) {
OutputRedirect::~OutputRedirect() FMT_NOEXCEPT {
try {
restore();
} catch (const std::exception &e) {
} catch (const std::exception& e) {
std::fputs(e.what(), stderr);
}
}
@ -56,8 +54,7 @@ std::string OutputRedirect::restore_and_read() {
// Read everything from the pipe.
std::string content;
if (read_end_.descriptor() == -1)
return content; // Already read.
if (read_end_.descriptor() == -1) return content; // Already read.
enum { BUFFER_SIZE = 4096 };
char buffer[BUFFER_SIZE];
std::size_t count = 0;
@ -69,7 +66,7 @@ std::string OutputRedirect::restore_and_read() {
return content;
}
std::string read(file &f, std::size_t count) {
std::string read(file& f, std::size_t count) {
std::string buffer(count, '\0');
std::size_t n = 0, offset = 0;
do {
@ -81,7 +78,7 @@ std::string read(file &f, std::size_t count) {
return buffer;
}
#endif // FMT_USE_FILE_DESCRIPTORS
#endif // FMT_USE_FCNTL
std::string format_system_error(int error_code, fmt::string_view message) {
fmt::memory_buffer out;

View file

@ -10,16 +10,7 @@
#include <string>
#include "gmock.h"
#include "fmt/core.h"
#ifndef FMT_USE_FILE_DESCRIPTORS
# define FMT_USE_FILE_DESCRIPTORS 0
#endif
#if FMT_USE_FILE_DESCRIPTORS
# include "fmt/posix.h"
#endif
#include "fmt/os.h"
#define FMT_TEST_THROW_(statement, expected_exception, expected_message, fail) \
GTEST_AMBIGUOUS_ELSE_BLOCKER_ \
@ -28,38 +19,36 @@
bool gtest_caught_expected = false; \
try { \
GTEST_SUPPRESS_UNREACHABLE_CODE_WARNING_BELOW_(statement); \
} \
catch (expected_exception const& e) { \
} catch (expected_exception const& e) { \
if (gtest_expected_message != e.what()) { \
gtest_ar \
<< #statement " throws an exception with a different message.\n" \
gtest_ar << #statement \
" throws an exception with a different message.\n" \
<< "Expected: " << gtest_expected_message << "\n" \
<< " Actual: " << e.what(); \
goto GTEST_CONCAT_TOKEN_(gtest_label_testthrow_, __LINE__); \
} \
gtest_caught_expected = true; \
} \
catch (...) { \
gtest_ar << \
"Expected: " #statement " throws an exception of type " \
#expected_exception ".\n Actual: it throws a different type."; \
} catch (...) { \
gtest_ar << "Expected: " #statement \
" throws an exception of type " #expected_exception \
".\n Actual: it throws a different type."; \
goto GTEST_CONCAT_TOKEN_(gtest_label_testthrow_, __LINE__); \
} \
if (!gtest_caught_expected) { \
gtest_ar << \
"Expected: " #statement " throws an exception of type " \
#expected_exception ".\n Actual: it throws nothing."; \
gtest_ar << "Expected: " #statement \
" throws an exception of type " #expected_exception \
".\n Actual: it throws nothing."; \
goto GTEST_CONCAT_TOKEN_(gtest_label_testthrow_, __LINE__); \
} \
} else \
GTEST_CONCAT_TOKEN_(gtest_label_testthrow_, __LINE__): \
fail(gtest_ar.failure_message())
GTEST_CONCAT_TOKEN_(gtest_label_testthrow_, __LINE__) \
: fail(gtest_ar.failure_message())
// Tests that the statement throws the expected exception and the exception's
// what() method returns expected message.
#define EXPECT_THROW_MSG(statement, expected_exception, expected_message) \
FMT_TEST_THROW_(statement, expected_exception, \
expected_message, GTEST_NONFATAL_FAILURE_)
FMT_TEST_THROW_(statement, expected_exception, expected_message, \
GTEST_NONFATAL_FAILURE_)
std::string format_system_error(int error_code, fmt::string_view message);
@ -67,13 +56,13 @@ std::string format_system_error(int error_code, fmt::string_view message);
EXPECT_THROW_MSG(statement, fmt::system_error, \
format_system_error(error_code, message))
#if FMT_USE_FILE_DESCRIPTORS
#if FMT_USE_FCNTL
// Captures file output by redirecting it to a pipe.
// The output it can handle is limited by the pipe capacity.
class OutputRedirect {
private:
FILE *file_;
FILE* file_;
fmt::file original_; // Original file passed to redirector.
fmt::file read_end_; // Read end of the pipe where the output is redirected.
@ -83,7 +72,7 @@ class OutputRedirect {
void restore();
public:
explicit OutputRedirect(FILE *file);
explicit OutputRedirect(FILE* file);
~OutputRedirect() FMT_NOEXCEPT;
// Restores the original file, reads output from the pipe into a string
@ -91,7 +80,7 @@ class OutputRedirect {
std::string restore_and_read();
};
#define FMT_TEST_WRITE_(statement, expected_output, file, fail) \
# define FMT_TEST_WRITE_(statement, expected_output, file, fail) \
GTEST_AMBIGUOUS_ELSE_BLOCKER_ \
if (::testing::AssertionResult gtest_ar = ::testing::AssertionSuccess()) { \
std::string gtest_expected_output = expected_output; \
@ -99,21 +88,20 @@ class OutputRedirect {
GTEST_SUPPRESS_UNREACHABLE_CODE_WARNING_BELOW_(statement); \
std::string gtest_output = gtest_redir.restore_and_read(); \
if (gtest_output != gtest_expected_output) { \
gtest_ar \
<< #statement " produces different output.\n" \
gtest_ar << #statement " produces different output.\n" \
<< "Expected: " << gtest_expected_output << "\n" \
<< " Actual: " << gtest_output; \
goto GTEST_CONCAT_TOKEN_(gtest_label_testthrow_, __LINE__); \
} \
} else \
GTEST_CONCAT_TOKEN_(gtest_label_testthrow_, __LINE__): \
fail(gtest_ar.failure_message())
GTEST_CONCAT_TOKEN_(gtest_label_testthrow_, __LINE__) \
: fail(gtest_ar.failure_message())
// Tests that the statement writes the expected output to file.
#define EXPECT_WRITE(file, statement, expected_output) \
# define EXPECT_WRITE(file, statement, expected_output) \
FMT_TEST_WRITE_(statement, expected_output, file, GTEST_NONFATAL_FAILURE_)
#ifdef _MSC_VER
# ifdef _MSC_VER
// Suppresses Windows assertions on invalid file descriptors, making
// POSIX functions return proper error codes instead of crashing on Windows.
@ -122,40 +110,45 @@ class SuppressAssert {
_invalid_parameter_handler original_handler_;
int original_report_mode_;
static void handle_invalid_parameter(const wchar_t *,
const wchar_t *, const wchar_t *, unsigned , uintptr_t) {}
static void handle_invalid_parameter(const wchar_t*, const wchar_t*,
const wchar_t*, unsigned, uintptr_t) {}
public:
SuppressAssert()
: original_handler_(_set_invalid_parameter_handler(handle_invalid_parameter)),
original_report_mode_(_CrtSetReportMode(_CRT_ASSERT, 0)) {
}
: original_handler_(
_set_invalid_parameter_handler(handle_invalid_parameter)),
original_report_mode_(_CrtSetReportMode(_CRT_ASSERT, 0)) {}
~SuppressAssert() {
_set_invalid_parameter_handler(original_handler_);
_CrtSetReportMode(_CRT_ASSERT, original_report_mode_);
}
};
# define SUPPRESS_ASSERT(statement) { SuppressAssert sa; statement; }
#else
# define SUPPRESS_ASSERT(statement) \
{ \
SuppressAssert sa; \
statement; \
}
# else
# define SUPPRESS_ASSERT(statement) statement
#endif // _MSC_VER
# endif // _MSC_VER
#define EXPECT_SYSTEM_ERROR_NOASSERT(statement, error_code, message) \
# define EXPECT_SYSTEM_ERROR_NOASSERT(statement, error_code, message) \
EXPECT_SYSTEM_ERROR(SUPPRESS_ASSERT(statement), error_code, message)
// Attempts to read count characters from a file.
std::string read(fmt::file &f, std::size_t count);
std::string read(fmt::file& f, std::size_t count);
#define EXPECT_READ(file, expected_content) \
# define EXPECT_READ(file, expected_content) \
EXPECT_EQ(expected_content, read(file, std::strlen(expected_content)))
#endif // FMT_USE_FILE_DESCRIPTORS
#else
# define EXPECT_WRITE(file, statement, expected_output) SUCCEED()
#endif // FMT_USE_FCNTL
template <typename Mock>
struct ScopedMock : testing::StrictMock<Mock> {
template <typename Mock> struct ScopedMock : testing::StrictMock<Mock> {
ScopedMock() { Mock::instance = this; }
~ScopedMock() { Mock::instance = FMT_NULL; }
~ScopedMock() { Mock::instance = nullptr; }
};
#endif // FMT_GTEST_EXTRA_H_

View file

@ -8,27 +8,82 @@
#include "fmt/locale.h"
#include "gmock.h"
template <typename Char>
struct numpunct : std::numpunct<Char> {
using fmt::internal::max_value;
#ifndef FMT_STATIC_THOUSANDS_SEPARATOR
template <typename Char> struct numpunct : std::numpunct<Char> {
protected:
Char do_decimal_point() const FMT_OVERRIDE { return '?'; }
std::string do_grouping() const FMT_OVERRIDE { return "\03"; }
Char do_thousands_sep() const FMT_OVERRIDE { return '~'; }
};
template <typename Char> struct no_grouping : std::numpunct<Char> {
protected:
Char do_decimal_point() const FMT_OVERRIDE { return '.'; }
std::string do_grouping() const FMT_OVERRIDE { return ""; }
Char do_thousands_sep() const FMT_OVERRIDE { return ','; }
};
template <typename Char> struct special_grouping : std::numpunct<Char> {
protected:
Char do_decimal_point() const FMT_OVERRIDE { return '.'; }
std::string do_grouping() const FMT_OVERRIDE { return "\03\02"; }
Char do_thousands_sep() const FMT_OVERRIDE { return ','; }
};
template <typename Char> struct small_grouping : std::numpunct<Char> {
protected:
Char do_decimal_point() const FMT_OVERRIDE { return '.'; }
std::string do_grouping() const FMT_OVERRIDE { return "\01"; }
Char do_thousands_sep() const FMT_OVERRIDE { return ','; }
};
TEST(LocaleTest, DoubleDecimalPoint) {
std::locale loc(std::locale(), new numpunct<char>());
EXPECT_EQ("1?23", fmt::format(loc, "{:n}", 1.23));
}
TEST(LocaleTest, Format) {
std::locale loc(std::locale(), new numpunct<char>());
EXPECT_EQ("1,234,567", fmt::format(std::locale(), "{:n}", 1234567));
EXPECT_EQ("1234567", fmt::format(std::locale(), "{:n}", 1234567));
EXPECT_EQ("1~234~567", fmt::format(loc, "{:n}", 1234567));
fmt::format_arg_store<fmt::format_context, int> as{1234567};
EXPECT_EQ("1~234~567", fmt::vformat(loc, "{:n}", fmt::format_args(as)));
std::string s;
fmt::format_to(std::back_inserter(s), loc, "{:n}", 1234567);
EXPECT_EQ("1~234~567", s);
std::locale no_grouping_loc(std::locale(), new no_grouping<char>());
EXPECT_EQ("1234567", fmt::format(no_grouping_loc, "{:n}", 1234567));
std::locale special_grouping_loc(std::locale(), new special_grouping<char>());
EXPECT_EQ("1,23,45,678", fmt::format(special_grouping_loc, "{:n}", 12345678));
std::locale small_grouping_loc(std::locale(), new small_grouping<char>());
EXPECT_EQ("4,2,9,4,9,6,7,2,9,5",
fmt::format(small_grouping_loc, "{:n}", max_value<uint32_t>()));
}
TEST(LocaleTest, WFormat) {
std::locale loc(std::locale(), new numpunct<wchar_t>());
EXPECT_EQ(L"1,234,567", fmt::format(std::locale(), L"{:n}", 1234567));
EXPECT_EQ(L"1234567", fmt::format(std::locale(), L"{:n}", 1234567));
EXPECT_EQ(L"1~234~567", fmt::format(loc, L"{:n}", 1234567));
fmt::format_arg_store<fmt::wformat_context, int> as{1234567};
EXPECT_EQ(L"1~234~567", fmt::vformat(loc, L"{:n}", fmt::wformat_args(as)));
EXPECT_EQ(L"1234567", fmt::format(std::locale("C"), L"{:n}", 1234567));
std::locale no_grouping_loc(std::locale(), new no_grouping<wchar_t>());
EXPECT_EQ(L"1234567", fmt::format(no_grouping_loc, L"{:n}", 1234567));
std::locale special_grouping_loc(std::locale(),
new special_grouping<wchar_t>());
EXPECT_EQ(L"1,23,45,678",
fmt::format(special_grouping_loc, L"{:n}", 12345678));
std::locale small_grouping_loc(std::locale(), new small_grouping<wchar_t>());
EXPECT_EQ(L"4,2,9,4,9,6,7,2,9,5",
fmt::format(small_grouping_loc, L"{:n}", max_value<uint32_t>()));
}
#endif // FMT_STATIC_THOUSANDS_SEPARATOR

View file

@ -8,53 +8,51 @@
#ifndef FMT_MOCK_ALLOCATOR_H_
#define FMT_MOCK_ALLOCATOR_H_
#include "gmock.h"
#include "fmt/format.h"
#include "gmock.h"
template <typename T>
class mock_allocator {
template <typename T> class mock_allocator {
public:
mock_allocator() {}
mock_allocator(const mock_allocator &) {}
mock_allocator(const mock_allocator&) {}
typedef T value_type;
MOCK_METHOD1_T(allocate, T* (std::size_t n));
MOCK_METHOD2_T(deallocate, void (T* p, std::size_t n));
MOCK_METHOD1_T(allocate, T*(std::size_t n));
MOCK_METHOD2_T(deallocate, void(T* p, std::size_t n));
};
template <typename Allocator>
class allocator_ref {
template <typename Allocator> class allocator_ref {
private:
Allocator *alloc_;
Allocator* alloc_;
void move(allocator_ref &other) {
void move(allocator_ref& other) {
alloc_ = other.alloc_;
other.alloc_ = FMT_NULL;
other.alloc_ = nullptr;
}
public:
typedef typename Allocator::value_type value_type;
explicit allocator_ref(Allocator *alloc = FMT_NULL) : alloc_(alloc) {}
explicit allocator_ref(Allocator* alloc = nullptr) : alloc_(alloc) {}
allocator_ref(const allocator_ref &other) : alloc_(other.alloc_) {}
allocator_ref(allocator_ref &&other) { move(other); }
allocator_ref(const allocator_ref& other) : alloc_(other.alloc_) {}
allocator_ref(allocator_ref&& other) { move(other); }
allocator_ref& operator=(allocator_ref &&other) {
allocator_ref& operator=(allocator_ref&& other) {
assert(this != &other);
move(other);
return *this;
}
allocator_ref& operator=(const allocator_ref &other) {
allocator_ref& operator=(const allocator_ref& other) {
alloc_ = other.alloc_;
return *this;
}
public:
Allocator *get() const { return alloc_; }
Allocator* get() const { return alloc_; }
value_type* allocate(std::size_t n) {
return fmt::internal::allocate(*alloc_, n);
return std::allocator_traits<Allocator>::allocate(*alloc_, n);
}
void deallocate(value_type* p, std::size_t n) { alloc_->deallocate(p, n); }
};

View file

@ -1,4 +1,4 @@
// Formatting library for C++ - tests of the C++ interface to POSIX functions
// Formatting library for C++ - tests of the OS-specific functionality
//
// Copyright (c) 2012 - present, Victor Zverovich
// All rights reserved.
@ -7,8 +7,9 @@
#include <cstdlib> // std::exit
#include <cstring>
#include <memory>
#include "fmt/posix.h"
#include "fmt/os.h"
#include "gtest-extra.h"
#include "util.h"
@ -18,9 +19,126 @@
using fmt::buffered_file;
using fmt::error_code;
using fmt::file;
using testing::internal::scoped_ptr;
#ifdef _WIN32
# include <windows.h>
TEST(UtilTest, UTF16ToUTF8) {
std::string s = "ёжик";
fmt::internal::utf16_to_utf8 u(L"\x0451\x0436\x0438\x043A");
EXPECT_EQ(s, u.str());
EXPECT_EQ(s.size(), u.size());
}
TEST(UtilTest, UTF16ToUTF8EmptyString) {
std::string s = "";
fmt::internal::utf16_to_utf8 u(L"");
EXPECT_EQ(s, u.str());
EXPECT_EQ(s.size(), u.size());
}
template <typename Converter, typename Char>
void check_utf_conversion_error(
const char* message,
fmt::basic_string_view<Char> str = fmt::basic_string_view<Char>(0, 1)) {
fmt::memory_buffer out;
fmt::internal::format_windows_error(out, ERROR_INVALID_PARAMETER, message);
fmt::system_error error(0, "");
try {
(Converter)(str);
} catch (const fmt::system_error& e) {
error = e;
}
EXPECT_EQ(ERROR_INVALID_PARAMETER, error.error_code());
EXPECT_EQ(fmt::to_string(out), error.what());
}
TEST(UtilTest, UTF16ToUTF8Error) {
check_utf_conversion_error<fmt::internal::utf16_to_utf8, wchar_t>(
"cannot convert string from UTF-16 to UTF-8");
}
TEST(UtilTest, UTF16ToUTF8Convert) {
fmt::internal::utf16_to_utf8 u;
EXPECT_EQ(ERROR_INVALID_PARAMETER, u.convert(fmt::wstring_view(0, 1)));
EXPECT_EQ(ERROR_INVALID_PARAMETER,
u.convert(fmt::wstring_view(L"foo", INT_MAX + 1u)));
}
TEST(UtilTest, FormatWindowsError) {
LPWSTR message = 0;
FormatMessageW(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM |
FORMAT_MESSAGE_IGNORE_INSERTS,
0, ERROR_FILE_EXISTS,
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
reinterpret_cast<LPWSTR>(&message), 0, 0);
fmt::internal::utf16_to_utf8 utf8_message(message);
LocalFree(message);
fmt::memory_buffer actual_message;
fmt::internal::format_windows_error(actual_message, ERROR_FILE_EXISTS,
"test");
EXPECT_EQ(fmt::format("test: {}", utf8_message.str()),
fmt::to_string(actual_message));
actual_message.resize(0);
auto max_size = fmt::internal::max_value<size_t>();
fmt::internal::format_windows_error(actual_message, ERROR_FILE_EXISTS,
fmt::string_view(0, max_size));
EXPECT_EQ(fmt::format("error {}", ERROR_FILE_EXISTS),
fmt::to_string(actual_message));
}
TEST(UtilTest, FormatLongWindowsError) {
LPWSTR message = 0;
// this error code is not available on all Windows platforms and
// Windows SDKs, so do not fail the test if the error string cannot
// be retrieved.
const int provisioning_not_allowed =
0x80284013L /*TBS_E_PROVISIONING_NOT_ALLOWED*/;
if (FormatMessageW(FORMAT_MESSAGE_ALLOCATE_BUFFER |
FORMAT_MESSAGE_FROM_SYSTEM |
FORMAT_MESSAGE_IGNORE_INSERTS,
0, static_cast<DWORD>(provisioning_not_allowed),
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
reinterpret_cast<LPWSTR>(&message), 0, 0) == 0) {
return;
}
fmt::internal::utf16_to_utf8 utf8_message(message);
LocalFree(message);
fmt::memory_buffer actual_message;
fmt::internal::format_windows_error(actual_message, provisioning_not_allowed,
"test");
EXPECT_EQ(fmt::format("test: {}", utf8_message.str()),
fmt::to_string(actual_message));
}
TEST(UtilTest, WindowsError) {
fmt::system_error error(0, "");
try {
throw fmt::windows_error(ERROR_FILE_EXISTS, "test {}", "error");
} catch (const fmt::system_error& e) {
error = e;
}
fmt::memory_buffer message;
fmt::internal::format_windows_error(message, ERROR_FILE_EXISTS, "test error");
EXPECT_EQ(to_string(message), error.what());
EXPECT_EQ(ERROR_FILE_EXISTS, error.error_code());
}
TEST(UtilTest, ReportWindowsError) {
fmt::memory_buffer out;
fmt::internal::format_windows_error(out, ERROR_FILE_EXISTS, "test error");
out.push_back('\n');
EXPECT_WRITE(stderr,
fmt::report_windows_error(ERROR_FILE_EXISTS, "test error"),
fmt::to_string(out));
}
#endif // _WIN32
#if FMT_USE_FCNTL
using fmt::file;
// Checks if the file is open by reading one character from it.
static bool isopen(int fd) {
@ -45,9 +163,9 @@ static file open_file() {
}
// Attempts to write a string to a file.
static void write(file &f, fmt::string_view s) {
static void write(file& f, fmt::string_view s) {
std::size_t num_chars_left = s.size();
const char *ptr = s.data();
const char* ptr = s.data();
do {
std::size_t count = f.write(ptr, num_chars_left);
ptr += count;
@ -59,26 +177,26 @@ static void write(file &f, fmt::string_view s) {
TEST(BufferedFileTest, DefaultCtor) {
buffered_file f;
EXPECT_TRUE(f.get() == FMT_NULL);
EXPECT_TRUE(f.get() == nullptr);
}
TEST(BufferedFileTest, MoveCtor) {
buffered_file bf = open_buffered_file();
FILE *fp = bf.get();
EXPECT_TRUE(fp != FMT_NULL);
FILE* fp = bf.get();
EXPECT_TRUE(fp != nullptr);
buffered_file bf2(std::move(bf));
EXPECT_EQ(fp, bf2.get());
EXPECT_TRUE(bf.get() == FMT_NULL);
EXPECT_TRUE(bf.get() == nullptr);
}
TEST(BufferedFileTest, MoveAssignment) {
buffered_file bf = open_buffered_file();
FILE *fp = bf.get();
EXPECT_TRUE(fp != FMT_NULL);
FILE* fp = bf.get();
EXPECT_TRUE(fp != nullptr);
buffered_file bf2;
bf2 = std::move(bf);
EXPECT_EQ(fp, bf2.get());
EXPECT_TRUE(bf.get() == FMT_NULL);
EXPECT_TRUE(bf.get() == nullptr);
}
TEST(BufferedFileTest, MoveAssignmentClosesFile) {
@ -90,13 +208,13 @@ TEST(BufferedFileTest, MoveAssignmentClosesFile) {
}
TEST(BufferedFileTest, MoveFromTemporaryInCtor) {
FILE *fp = FMT_NULL;
FILE* fp = nullptr;
buffered_file f(open_buffered_file(&fp));
EXPECT_EQ(fp, f.get());
}
TEST(BufferedFileTest, MoveFromTemporaryInAssignment) {
FILE *fp = FMT_NULL;
FILE* fp = nullptr;
buffered_file f;
f = open_buffered_file(&fp);
EXPECT_EQ(fp, f.get());
@ -119,22 +237,24 @@ TEST(BufferedFileTest, CloseFileInDtor) {
}
TEST(BufferedFileTest, CloseErrorInDtor) {
scoped_ptr<buffered_file> f(new buffered_file(open_buffered_file()));
EXPECT_WRITE(stderr, {
// The close function must be called inside EXPECT_WRITE, otherwise
// the system may recycle closed file descriptor when redirecting the
// output in EXPECT_STDERR and the second close will break output
// redirection.
std::unique_ptr<buffered_file> f(new buffered_file(open_buffered_file()));
EXPECT_WRITE(stderr,
{
// The close function must be called inside EXPECT_WRITE,
// otherwise the system may recycle closed file descriptor when
// redirecting the output in EXPECT_STDERR and the second close
// will break output redirection.
FMT_POSIX(close(f->fileno()));
SUPPRESS_ASSERT(f.reset(FMT_NULL));
}, format_system_error(EBADF, "cannot close file") + "\n");
SUPPRESS_ASSERT(f.reset(nullptr));
},
format_system_error(EBADF, "cannot close file") + "\n");
}
TEST(BufferedFileTest, Close) {
buffered_file f = open_buffered_file();
int fd = f.fileno();
f.close();
EXPECT_TRUE(f.get() == FMT_NULL);
EXPECT_TRUE(f.get() == nullptr);
EXPECT_TRUE(isclosed(fd));
}
@ -142,22 +262,24 @@ TEST(BufferedFileTest, CloseError) {
buffered_file f = open_buffered_file();
FMT_POSIX(close(f.fileno()));
EXPECT_SYSTEM_ERROR_NOASSERT(f.close(), EBADF, "cannot close file");
EXPECT_TRUE(f.get() == FMT_NULL);
EXPECT_TRUE(f.get() == nullptr);
}
TEST(BufferedFileTest, Fileno) {
buffered_file f;
#ifndef __COVERITY__
# ifndef __COVERITY__
// fileno on a null FILE pointer either crashes or returns an error.
// Disable Coverity because this is intentional.
EXPECT_DEATH_IF_SUPPORTED({
EXPECT_DEATH_IF_SUPPORTED(
{
try {
f.fileno();
} catch (const fmt::system_error&) {
std::exit(1);
}
}, "");
#endif
},
"");
# endif
f = open_buffered_file();
EXPECT_TRUE(f.fileno() != -1);
file copy = file::dup(f.fileno());
@ -170,7 +292,7 @@ TEST(FileTest, DefaultCtor) {
}
TEST(FileTest, OpenBufferedFileInCtor) {
FILE *fp = safe_fopen("test-file", "w");
FILE* fp = safe_fopen("test-file", "w");
std::fputs(FILE_CONTENT, fp);
std::fclose(fp);
file f("test-file", file::RDONLY);
@ -178,8 +300,8 @@ TEST(FileTest, OpenBufferedFileInCtor) {
}
TEST(FileTest, OpenBufferedFileError) {
EXPECT_SYSTEM_ERROR(file("nonexistent", file::RDONLY),
ENOENT, "cannot open file nonexistent");
EXPECT_SYSTEM_ERROR(file("nonexistent", file::RDONLY), ENOENT,
"cannot open file nonexistent");
}
TEST(FileTest, MoveCtor) {
@ -209,7 +331,7 @@ TEST(FileTest, MoveAssignmentClosesFile) {
EXPECT_TRUE(isclosed(old_fd));
}
static file OpenBufferedFile(int &fd) {
static file OpenBufferedFile(int& fd) {
file f = open_file();
fd = f.descriptor();
return f;
@ -246,15 +368,17 @@ TEST(FileTest, CloseFileInDtor) {
}
TEST(FileTest, CloseErrorInDtor) {
scoped_ptr<file> f(new file(open_file()));
EXPECT_WRITE(stderr, {
// The close function must be called inside EXPECT_WRITE, otherwise
// the system may recycle closed file descriptor when redirecting the
// output in EXPECT_STDERR and the second close will break output
// redirection.
std::unique_ptr<file> f(new file(open_file()));
EXPECT_WRITE(stderr,
{
// The close function must be called inside EXPECT_WRITE,
// otherwise the system may recycle closed file descriptor when
// redirecting the output in EXPECT_STDERR and the second close
// will break output redirection.
FMT_POSIX(close(f->descriptor()));
SUPPRESS_ASSERT(f.reset(FMT_NULL));
}, format_system_error(EBADF, "cannot close file") + "\n");
SUPPRESS_ASSERT(f.reset(nullptr));
},
format_system_error(EBADF, "cannot close file") + "\n");
}
TEST(FileTest, Close) {
@ -307,13 +431,13 @@ TEST(FileTest, Dup) {
EXPECT_EQ(FILE_CONTENT, read(copy, std::strlen(FILE_CONTENT)));
}
#ifndef __COVERITY__
# ifndef __COVERITY__
TEST(FileTest, DupError) {
int value = -1;
EXPECT_SYSTEM_ERROR_NOASSERT(file::dup(value),
EBADF, "cannot duplicate file descriptor -1");
EXPECT_SYSTEM_ERROR_NOASSERT(file::dup(value), EBADF,
"cannot duplicate file descriptor -1");
}
#endif
# endif
TEST(FileTest, Dup2) {
file f = open_file();
@ -325,7 +449,8 @@ TEST(FileTest, Dup2) {
TEST(FileTest, Dup2Error) {
file f = open_file();
EXPECT_SYSTEM_ERROR_NOASSERT(f.dup2(-1), EBADF,
EXPECT_SYSTEM_ERROR_NOASSERT(
f.dup2(-1), EBADF,
fmt::format("cannot duplicate file descriptor {} to -1", f.descriptor()));
}
@ -362,17 +487,12 @@ TEST(FileTest, Fdopen) {
EXPECT_EQ(read_fd, FMT_POSIX(fileno(read_end.fdopen("r").get())));
}
TEST(FileTest, FdopenError) {
file f;
EXPECT_SYSTEM_ERROR_NOASSERT(
f.fdopen("r"), EBADF, "cannot associate stream with file descriptor");
}
#ifdef FMT_LOCALE
# ifdef FMT_LOCALE
TEST(LocaleTest, Strtod) {
fmt::Locale locale;
fmt::locale loc;
const char *start = "4.2", *ptr = start;
EXPECT_EQ(4.2, locale.strtod(ptr));
EXPECT_EQ(4.2, loc.strtod(ptr));
EXPECT_EQ(start + 3, ptr);
}
#endif
# endif
#endif // FMT_USE_FCNTL

View file

@ -6,6 +6,21 @@
// For the license information refer to format.h.
#define FMT_STRING_ALIAS 1
#include "fmt/format.h"
struct test {};
// Test that there is no issues with specializations when fmt/ostream.h is
// included after fmt/format.h.
namespace fmt {
template <> struct formatter<test> : formatter<int> {
template <typename FormatContext>
typename FormatContext::iterator format(const test&, FormatContext& ctx) {
return formatter<int>::format(42, ctx);
}
};
} // namespace fmt
#include "fmt/ostream.h"
#include <sstream>
@ -16,51 +31,56 @@
using fmt::format;
using fmt::format_error;
static std::ostream &operator<<(std::ostream &os, const Date &d) {
static std::ostream& operator<<(std::ostream& os, const Date& d) {
os << d.year() << '-' << d.month() << '-' << d.day();
return os;
}
static std::wostream &operator<<(std::wostream &os, const Date &d) {
static std::wostream& operator<<(std::wostream& os, const Date& d) {
os << d.year() << L'-' << d.month() << L'-' << d.day();
return os;
}
enum TestEnum {};
static std::ostream &operator<<(std::ostream &os, TestEnum) {
return os << "TestEnum";
// Make sure that overloaded comma operators do no harm to is_streamable.
struct type_with_comma_op {};
template <typename T> void operator,(type_with_comma_op, const T&);
template <typename T> type_with_comma_op operator<<(T&, const Date&);
enum streamable_enum {};
static std::ostream& operator<<(std::ostream& os, streamable_enum) {
return os << "streamable_enum";
}
static std::wostream &operator<<(std::wostream &os, TestEnum) {
return os << L"TestEnum";
static std::wostream& operator<<(std::wostream& os, streamable_enum) {
return os << L"streamable_enum";
}
enum TestEnum2 {A};
enum unstreamable_enum {};
TEST(OStreamTest, Enum) {
EXPECT_FALSE((fmt::convert_to_int<TestEnum, char>::value));
EXPECT_EQ("TestEnum", fmt::format("{}", TestEnum()));
EXPECT_EQ("0", fmt::format("{}", A));
EXPECT_FALSE((fmt::convert_to_int<TestEnum, wchar_t>::value));
EXPECT_EQ(L"TestEnum", fmt::format(L"{}", TestEnum()));
EXPECT_EQ(L"0", fmt::format(L"{}", A));
EXPECT_EQ("streamable_enum", fmt::format("{}", streamable_enum()));
EXPECT_EQ("0", fmt::format("{}", unstreamable_enum()));
EXPECT_EQ(L"streamable_enum", fmt::format(L"{}", streamable_enum()));
EXPECT_EQ(L"0", fmt::format(L"{}", unstreamable_enum()));
}
typedef fmt::back_insert_range<fmt::internal::buffer> range;
using range = fmt::buffer_range<char>;
struct test_arg_formatter: fmt::arg_formatter<range> {
test_arg_formatter(fmt::format_context &ctx, fmt::format_specs &s)
: fmt::arg_formatter<range>(ctx, &s) {}
struct test_arg_formatter : fmt::arg_formatter<range> {
fmt::format_parse_context parse_ctx;
test_arg_formatter(fmt::format_context& ctx, fmt::format_specs& s)
: fmt::arg_formatter<range>(ctx, &parse_ctx, &s), parse_ctx("") {}
};
TEST(OStreamTest, CustomArg) {
fmt::memory_buffer buffer;
fmt::internal::buffer &base = buffer;
fmt::format_context ctx(std::back_inserter(base), "", fmt::format_args());
fmt::internal::buffer<char>& base = buffer;
fmt::format_context ctx(std::back_inserter(base), fmt::format_args());
fmt::format_specs spec;
test_arg_formatter af(ctx, spec);
visit(af, fmt::internal::make_arg<fmt::format_context>(TestEnum()));
EXPECT_EQ("TestEnum", std::string(buffer.data(), buffer.size()));
fmt::visit_format_arg(
af, fmt::internal::make_arg<fmt::format_context>(streamable_enum()));
EXPECT_EQ("streamable_enum", std::string(buffer.data(), buffer.size()));
}
TEST(OStreamTest, Format) {
@ -75,20 +95,22 @@ TEST(OStreamTest, Format) {
TEST(OStreamTest, FormatSpecs) {
EXPECT_EQ("def ", format("{0:<5}", TestString("def")));
EXPECT_EQ(" def", format("{0:>5}", TestString("def")));
EXPECT_THROW_MSG(format("{0:=5}", TestString("def")),
format_error, "format specifier requires numeric argument");
#if FMT_NUMERIC_ALIGN
EXPECT_THROW_MSG(format("{0:=5}", TestString("def")), format_error,
"format specifier requires numeric argument");
#endif
EXPECT_EQ(" def ", format("{0:^5}", TestString("def")));
EXPECT_EQ("def**", format("{0:*<5}", TestString("def")));
EXPECT_THROW_MSG(format("{0:+}", TestString()),
format_error, "format specifier requires numeric argument");
EXPECT_THROW_MSG(format("{0:-}", TestString()),
format_error, "format specifier requires numeric argument");
EXPECT_THROW_MSG(format("{0: }", TestString()),
format_error, "format specifier requires numeric argument");
EXPECT_THROW_MSG(format("{0:#}", TestString()),
format_error, "format specifier requires numeric argument");
EXPECT_THROW_MSG(format("{0:05}", TestString()),
format_error, "format specifier requires numeric argument");
EXPECT_THROW_MSG(format("{0:+}", TestString()), format_error,
"format specifier requires numeric argument");
EXPECT_THROW_MSG(format("{0:-}", TestString()), format_error,
"format specifier requires numeric argument");
EXPECT_THROW_MSG(format("{0: }", TestString()), format_error,
"format specifier requires numeric argument");
EXPECT_THROW_MSG(format("{0:#}", TestString()), format_error,
"format specifier requires numeric argument");
EXPECT_THROW_MSG(format("{0:05}", TestString()), format_error,
"format specifier requires numeric argument");
EXPECT_EQ("test ", format("{0:13}", TestString("test")));
EXPECT_EQ("test ", format("{0:{1}}", TestString("test"), 13));
EXPECT_EQ("te", format("{0:.2}", TestString("test")));
@ -96,7 +118,7 @@ TEST(OStreamTest, FormatSpecs) {
}
struct EmptyTest {};
static std::ostream &operator<<(std::ostream &os, EmptyTest) {
static std::ostream& operator<<(std::ostream& os, EmptyTest) {
return os << "";
}
@ -116,37 +138,36 @@ TEST(OStreamTest, Print) {
TEST(OStreamTest, WriteToOStream) {
std::ostringstream os;
fmt::memory_buffer buffer;
const char *foo = "foo";
const char* foo = "foo";
buffer.append(foo, foo + std::strlen(foo));
fmt::internal::write(os, buffer);
EXPECT_EQ("foo", os.str());
}
TEST(OStreamTest, WriteToOStreamMaxSize) {
std::size_t max_size = std::numeric_limits<std::size_t>::max();
std::streamsize max_streamsize = std::numeric_limits<std::streamsize>::max();
if (max_size <= fmt::internal::to_unsigned(max_streamsize))
return;
std::size_t max_size = fmt::internal::max_value<std::size_t>();
std::streamsize max_streamsize = fmt::internal::max_value<std::streamsize>();
if (max_size <= fmt::internal::to_unsigned(max_streamsize)) return;
struct test_buffer : fmt::internal::buffer {
struct test_buffer : fmt::internal::buffer<char> {
explicit test_buffer(std::size_t size) { resize(size); }
void grow(std::size_t) {}
} buffer(max_size);
struct mock_streambuf : std::streambuf {
MOCK_METHOD2(xsputn, std::streamsize (const void *s, std::streamsize n));
std::streamsize xsputn(const char *s, std::streamsize n) {
const void *v = s;
MOCK_METHOD2(xsputn, std::streamsize(const void* s, std::streamsize n));
std::streamsize xsputn(const char* s, std::streamsize n) {
const void* v = s;
return xsputn(v, n);
}
} streambuf;
struct test_ostream : std::ostream {
explicit test_ostream(mock_streambuf &buffer) : std::ostream(&buffer) {}
explicit test_ostream(mock_streambuf& buffer) : std::ostream(&buffer) {}
} os(streambuf);
testing::InSequence sequence;
const char *data = FMT_NULL;
const char* data = nullptr;
typedef std::make_unsigned<std::streamsize>::type ustreamsize;
ustreamsize size = max_size;
do {
@ -166,19 +187,41 @@ TEST(OStreamTest, Join) {
#if FMT_USE_CONSTEXPR
TEST(OStreamTest, ConstexprString) {
EXPECT_EQ("42", format(fmt("{}"), std::string("42")));
EXPECT_EQ("42", format(FMT_STRING("{}"), std::string("42")));
EXPECT_EQ("a string", format(FMT_STRING("{0}"), TestString("a string")));
}
#endif
namespace fmt_test {
struct ABC {};
template <typename Output> Output &operator<<(Output &out, ABC) {
template <typename Output> Output& operator<<(Output& out, ABC) {
out << "ABC";
return out;
}
} // namespace fmt_test
template <typename T> struct TestTemplate {};
template <typename T>
std::ostream& operator<<(std::ostream& os, TestTemplate<T>) {
return os << 1;
}
namespace fmt {
template <typename T> struct formatter<TestTemplate<T>> : formatter<int> {
template <typename FormatContext>
typename FormatContext::iterator format(TestTemplate<T>, FormatContext& ctx) {
return formatter<int>::format(2, ctx);
}
};
} // namespace fmt
#if !FMT_GCC_VERSION || FMT_GCC_VERSION >= 407
TEST(OStreamTest, Template) {
EXPECT_EQ("2", fmt::format("{}", TestTemplate<int>()));
}
TEST(FormatTest, FormatToN) {
char buffer[4];
buffer[3] = 'x';
@ -191,6 +234,7 @@ TEST(FormatTest, FormatToN) {
EXPECT_EQ(buffer + 3, result.out);
EXPECT_EQ("xABx", fmt::string_view(buffer, 4));
}
#endif
#if FMT_USE_USER_DEFINED_LITERALS
TEST(FormatTest, UDL) {
@ -198,3 +242,51 @@ TEST(FormatTest, UDL) {
EXPECT_EQ("{}"_format("test"), "test");
}
#endif
template <typename T> struct convertible {
T value;
explicit convertible(const T& val) : value(val) {}
operator T() const { return value; }
};
TEST(OStreamTest, DisableBuiltinOStreamOperators) {
EXPECT_EQ("42", fmt::format("{:d}", convertible<unsigned short>(42)));
EXPECT_EQ(L"42", fmt::format(L"{:d}", convertible<unsigned short>(42)));
EXPECT_EQ("foo", fmt::format("{}", convertible<const char*>("foo")));
}
struct explicitly_convertible_to_string_like {
template <typename String,
typename = typename std::enable_if<std::is_constructible<
String, const char*, std::size_t>::value>::type>
explicit operator String() const {
return String("foo", 3u);
}
};
std::ostream& operator<<(std::ostream& os,
explicitly_convertible_to_string_like) {
return os << "bar";
}
TEST(FormatterTest, FormatExplicitlyConvertibleToStringLike) {
EXPECT_EQ("bar", fmt::format("{}", explicitly_convertible_to_string_like()));
}
#ifdef FMT_USE_STRING_VIEW
struct explicitly_convertible_to_std_string_view {
explicit operator fmt::internal::std_string_view<char>() const {
return {"foo", 3u};
}
};
std::ostream& operator<<(std::ostream& os,
explicitly_convertible_to_std_string_view) {
return os << "bar";
}
TEST(FormatterTest, FormatExplicitlyConvertibleToStdStringView) {
EXPECT_EQ("bar", fmt::format("{}", explicitly_convertible_to_string_like()));
}
#endif // FMT_USE_STRING_VIEW

View file

@ -6,16 +6,19 @@
// For the license information refer to format.h.
// Disable bogus MSVC warnings.
#ifdef _MSC_VER
#ifndef _CRT_SECURE_NO_WARNINGS
# define _CRT_SECURE_NO_WARNINGS
#endif
#include "posix-mock.h"
#include "../src/posix.cc"
#include <errno.h>
#include <fcntl.h>
#include <climits>
#include <memory>
#include "../src/os.cc"
#ifdef _WIN32
# include <io.h>
@ -29,12 +32,10 @@
using fmt::buffered_file;
using fmt::error_code;
using fmt::file;
using testing::internal::scoped_ptr;
using testing::_;
using testing::StrEq;
using testing::Return;
using testing::StrEq;
namespace {
int open_count;
@ -52,8 +53,8 @@ std::size_t read_nbyte;
std::size_t write_nbyte;
bool sysconf_error;
enum FStatSimulation { NONE, MAX_SIZE, ERROR } fstat_sim;
}
enum { NONE, MAX_SIZE, ERROR } fstat_sim;
} // namespace
#define EMULATE_EINTR(func, error_result) \
if (func##_count != 0) { \
@ -64,13 +65,13 @@ enum FStatSimulation { NONE, MAX_SIZE, ERROR } fstat_sim;
}
#ifndef _MSC_VER
int test::open(const char *path, int oflag, int mode) {
int test::open(const char* path, int oflag, int mode) {
EMULATE_EINTR(open, -1);
return ::open(path, oflag, mode);
}
#else
errno_t test::sopen_s(
int* pfh, const char *filename, int oflag, int shflag, int pmode) {
errno_t test::sopen_s(int* pfh, const char* filename, int oflag, int shflag,
int pmode) {
EMULATE_EINTR(open, EINTR);
return _sopen_s(pfh, filename, oflag, shflag, pmode);
}
@ -80,8 +81,7 @@ errno_t test::sopen_s(
long test::sysconf(int name) {
long result = ::sysconf(name);
if (!sysconf_error)
return result;
if (!sysconf_error) return result;
// Simulate an error.
errno = EINVAL;
return -1;
@ -89,10 +89,9 @@ long test::sysconf(int name) {
static off_t max_file_size() { return std::numeric_limits<off_t>::max(); }
int test::fstat(int fd, struct stat *buf) {
int test::fstat(int fd, struct stat* buf) {
int result = ::fstat(fd, buf);
if (fstat_sim == MAX_SIZE)
buf->st_size = max_file_size();
if (fstat_sim == MAX_SIZE) buf->st_size = max_file_size();
return result;
}
@ -132,18 +131,18 @@ int test::dup2(int fildes, int fildes2) {
return ::FMT_POSIX(dup2(fildes, fildes2));
}
FILE *test::fdopen(int fildes, const char *mode) {
EMULATE_EINTR(fdopen, FMT_NULL);
FILE* test::fdopen(int fildes, const char* mode) {
EMULATE_EINTR(fdopen, nullptr);
return ::FMT_POSIX(fdopen(fildes, mode));
}
test::ssize_t test::read(int fildes, void *buf, test::size_t nbyte) {
test::ssize_t test::read(int fildes, void* buf, test::size_t nbyte) {
read_nbyte = nbyte;
EMULATE_EINTR(read, -1);
return ::FMT_POSIX(read(fildes, buf, nbyte));
}
test::ssize_t test::write(int fildes, const void *buf, test::size_t nbyte) {
test::ssize_t test::write(int fildes, const void* buf, test::size_t nbyte) {
write_nbyte = nbyte;
EMULATE_EINTR(write, -1);
return ::FMT_POSIX(write(fildes, buf, nbyte));
@ -155,23 +154,23 @@ int test::pipe(int fildes[2]) {
return ::pipe(fildes);
}
#else
int test::pipe(int *pfds, unsigned psize, int textmode) {
int test::pipe(int* pfds, unsigned psize, int textmode) {
EMULATE_EINTR(pipe, -1);
return _pipe(pfds, psize, textmode);
}
#endif
FILE *test::fopen(const char *filename, const char *mode) {
EMULATE_EINTR(fopen, FMT_NULL);
FILE* test::fopen(const char* filename, const char* mode) {
EMULATE_EINTR(fopen, nullptr);
return ::fopen(filename, mode);
}
int test::fclose(FILE *stream) {
int test::fclose(FILE* stream) {
EMULATE_EINTR(fclose, EOF);
return ::fclose(stream);
}
int (test::fileno)(FILE *stream) {
int(test::fileno)(FILE* stream) {
EMULATE_EINTR(fileno, -1);
#ifdef fileno
return FMT_POSIX(fileno(stream));
@ -200,42 +199,48 @@ static void write_file(fmt::cstring_view filename, fmt::string_view content) {
f.print("{}", content);
}
#if FMT_USE_FCNTL
using fmt::file;
TEST(UtilTest, GetPageSize) {
#ifdef _WIN32
# ifdef _WIN32
SYSTEM_INFO si = {};
GetSystemInfo(&si);
EXPECT_EQ(si.dwPageSize, fmt::getpagesize());
#else
# else
EXPECT_EQ(sysconf(_SC_PAGESIZE), fmt::getpagesize());
sysconf_error = true;
EXPECT_SYSTEM_ERROR(
fmt::getpagesize(), EINVAL, "cannot get memory page size");
EXPECT_SYSTEM_ERROR(fmt::getpagesize(), EINVAL,
"cannot get memory page size");
sysconf_error = false;
#endif
# endif
}
TEST(FileTest, OpenRetry) {
write_file("test", "there must be something here");
scoped_ptr<file> f{FMT_NULL};
EXPECT_RETRY(f.reset(new file("test", file::RDONLY)),
open, "cannot open file test");
#ifndef _WIN32
write_file("temp", "there must be something here");
std::unique_ptr<file> f{nullptr};
EXPECT_RETRY(f.reset(new file("temp", file::RDONLY)), open,
"cannot open file temp");
# ifndef _WIN32
char c = 0;
f->read(&c, 1);
#endif
# endif
}
TEST(FileTest, CloseNoRetryInDtor) {
file read_end, write_end;
file::pipe(read_end, write_end);
scoped_ptr<file> f(new file(std::move(read_end)));
std::unique_ptr<file> f(new file(std::move(read_end)));
int saved_close_count = 0;
EXPECT_WRITE(stderr, {
EXPECT_WRITE(
stderr,
{
close_count = 1;
f.reset(FMT_NULL);
f.reset(nullptr);
saved_close_count = close_count;
close_count = 0;
}, format_system_error(EINTR, "cannot close file") + "\n");
},
format_system_error(EINTR, "cannot close file") + "\n");
EXPECT_EQ(2, saved_close_count);
}
@ -250,26 +255,26 @@ TEST(FileTest, CloseNoRetry) {
TEST(FileTest, Size) {
std::string content = "top secret, destroy before reading";
write_file("test", content);
file f("test", file::RDONLY);
write_file("temp", content);
file f("temp", file::RDONLY);
EXPECT_GE(f.size(), 0);
EXPECT_EQ(content.size(), static_cast<unsigned long long>(f.size()));
#ifdef _WIN32
# ifdef _WIN32
fmt::memory_buffer message;
fmt::internal::format_windows_error(
message, ERROR_ACCESS_DENIED, "cannot get file size");
fmt::internal::format_windows_error(message, ERROR_ACCESS_DENIED,
"cannot get file size");
fstat_sim = ERROR;
EXPECT_THROW_MSG(f.size(), fmt::windows_error, fmt::to_string(message));
fstat_sim = NONE;
#else
# else
f.close();
EXPECT_SYSTEM_ERROR(f.size(), EBADF, "cannot get file attributes");
#endif
# endif
}
TEST(FileTest, MaxSize) {
write_file("test", "");
file f("test", file::RDONLY);
write_file("temp", "");
file f("temp", file::RDONLY);
fstat_sim = MAX_SIZE;
EXPECT_GE(f.size(), 0);
EXPECT_EQ(max_file_size(), f.size());
@ -284,8 +289,8 @@ TEST(FileTest, ReadRetry) {
write_end.close();
char buffer[SIZE];
std::size_t count = 0;
EXPECT_RETRY(count = read_end.read(buffer, SIZE),
read, "cannot read from file");
EXPECT_RETRY(count = read_end.read(buffer, SIZE), read,
"cannot read from file");
EXPECT_EQ_POSIX(static_cast<std::streamsize>(SIZE), count);
}
@ -294,26 +299,25 @@ TEST(FileTest, WriteRetry) {
file::pipe(read_end, write_end);
enum { SIZE = 4 };
std::size_t count = 0;
EXPECT_RETRY(count = write_end.write("test", SIZE),
write, "cannot write to file");
EXPECT_RETRY(count = write_end.write("test", SIZE), write,
"cannot write to file");
write_end.close();
#ifndef _WIN32
# ifndef _WIN32
EXPECT_EQ(static_cast<std::streamsize>(SIZE), count);
char buffer[SIZE + 1];
read_end.read(buffer, SIZE);
buffer[SIZE] = '\0';
EXPECT_STREQ("test", buffer);
#endif
# endif
}
#ifdef _WIN32
# ifdef _WIN32
TEST(FileTest, ConvertReadCount) {
file read_end, write_end;
file::pipe(read_end, write_end);
char c;
std::size_t size = UINT_MAX;
if (sizeof(unsigned) != sizeof(std::size_t))
++size;
if (sizeof(unsigned) != sizeof(std::size_t)) ++size;
read_count = 1;
read_nbyte = 0;
EXPECT_THROW(read_end.read(&c, size), fmt::system_error);
@ -326,20 +330,20 @@ TEST(FileTest, ConvertWriteCount) {
file::pipe(read_end, write_end);
char c;
std::size_t size = UINT_MAX;
if (sizeof(unsigned) != sizeof(std::size_t))
++size;
if (sizeof(unsigned) != sizeof(std::size_t)) ++size;
write_count = 1;
write_nbyte = 0;
EXPECT_THROW(write_end.write(&c, size), fmt::system_error);
write_count = 0;
EXPECT_EQ(UINT_MAX, write_nbyte);
}
#endif
# endif
TEST(FileTest, DupNoRetry) {
int stdout_fd = FMT_POSIX(fileno(stdout));
dup_count = 1;
EXPECT_SYSTEM_ERROR(file::dup(stdout_fd), EINTR,
EXPECT_SYSTEM_ERROR(
file::dup(stdout_fd), EINTR,
fmt::format("cannot duplicate file descriptor {}", stdout_fd));
dup_count = 0;
}
@ -358,19 +362,19 @@ TEST(FileTest, Dup2NoExceptRetry) {
error_code ec;
dup2_count = 1;
f1.dup2(f2.descriptor(), ec);
#ifndef _WIN32
# ifndef _WIN32
EXPECT_EQ(4, dup2_count);
#else
# else
EXPECT_EQ(EINTR, ec.get());
#endif
# endif
dup2_count = 0;
}
TEST(FileTest, PipeNoRetry) {
file read_end, write_end;
pipe_count = 1;
EXPECT_SYSTEM_ERROR(
file::pipe(read_end, write_end), EINTR, "cannot create pipe");
EXPECT_SYSTEM_ERROR(file::pipe(read_end, write_end), EINTR,
"cannot create pipe");
pipe_count = 0;
}
@ -378,34 +382,37 @@ TEST(FileTest, FdopenNoRetry) {
file read_end, write_end;
file::pipe(read_end, write_end);
fdopen_count = 1;
EXPECT_SYSTEM_ERROR(read_end.fdopen("r"),
EINTR, "cannot associate stream with file descriptor");
EXPECT_SYSTEM_ERROR(read_end.fdopen("r"), EINTR,
"cannot associate stream with file descriptor");
fdopen_count = 0;
}
TEST(BufferedFileTest, OpenRetry) {
write_file("test", "there must be something here");
scoped_ptr<buffered_file> f{FMT_NULL};
EXPECT_RETRY(f.reset(new buffered_file("test", "r")),
fopen, "cannot open file test");
#ifndef _WIN32
write_file("temp", "there must be something here");
std::unique_ptr<buffered_file> f{nullptr};
EXPECT_RETRY(f.reset(new buffered_file("temp", "r")), fopen,
"cannot open file temp");
# ifndef _WIN32
char c = 0;
if (fread(&c, 1, 1, f->get()) < 1)
throw fmt::system_error(errno, "fread failed");
#endif
# endif
}
TEST(BufferedFileTest, CloseNoRetryInDtor) {
file read_end, write_end;
file::pipe(read_end, write_end);
scoped_ptr<buffered_file> f(new buffered_file(read_end.fdopen("r")));
std::unique_ptr<buffered_file> f(new buffered_file(read_end.fdopen("r")));
int saved_fclose_count = 0;
EXPECT_WRITE(stderr, {
EXPECT_WRITE(
stderr,
{
fclose_count = 1;
f.reset(FMT_NULL);
f.reset(nullptr);
saved_fclose_count = fclose_count;
fclose_count = 0;
}, format_system_error(EINTR, "cannot close file") + "\n");
},
format_system_error(EINTR, "cannot close file") + "\n");
EXPECT_EQ(2, saved_fclose_count);
}
@ -428,111 +435,123 @@ TEST(BufferedFileTest, FilenoNoRetry) {
EXPECT_EQ(2, fileno_count);
fileno_count = 0;
}
#endif // FMT_USE_FCNTL
struct TestMock {
static TestMock *instance;
} *TestMock::instance;
struct test_mock {
static test_mock* instance;
} * test_mock::instance;
TEST(ScopedMock, Scope) {
{
ScopedMock<TestMock> mock;
EXPECT_EQ(&mock, TestMock::instance);
TestMock &copy = mock;
ScopedMock<test_mock> mock;
EXPECT_EQ(&mock, test_mock::instance);
test_mock& copy = mock;
static_cast<void>(copy);
}
EXPECT_EQ(FMT_NULL, TestMock::instance);
EXPECT_EQ(nullptr, test_mock::instance);
}
#ifdef FMT_LOCALE
typedef fmt::Locale::Type LocaleType;
typedef fmt::locale::type locale_type;
struct LocaleMock {
static LocaleMock *instance;
MOCK_METHOD3(newlocale, LocaleType (int category_mask, const char *locale,
LocaleType base));
MOCK_METHOD1(freelocale, void (LocaleType locale));
struct locale_mock {
static locale_mock* instance;
MOCK_METHOD3(newlocale, locale_type(int category_mask, const char* locale,
locale_type base));
MOCK_METHOD1(freelocale, void(locale_type locale));
MOCK_METHOD3(strtod_l, double (const char *nptr, char **endptr,
LocaleType locale));
} *LocaleMock::instance;
MOCK_METHOD3(strtod_l,
double(const char* nptr, char** endptr, locale_type locale));
} * locale_mock::instance;
#ifdef _MSC_VER
# ifdef _MSC_VER
# pragma warning(push)
# pragma warning(disable: 4273)
# pragma warning(disable : 4273)
# ifdef __clang__
# pragma clang diagnostic push
# pragma clang diagnostic ignored "-Winconsistent-dllimport"
# endif
_locale_t _create_locale(int category, const char *locale) {
return LocaleMock::instance->newlocale(category, locale, 0);
_locale_t _create_locale(int category, const char* locale) {
return locale_mock::instance->newlocale(category, locale, 0);
}
void _free_locale(_locale_t locale) {
LocaleMock::instance->freelocale(locale);
locale_mock::instance->freelocale(locale);
}
double _strtod_l(const char *nptr, char **endptr, _locale_t locale) {
return LocaleMock::instance->strtod_l(nptr, endptr, locale);
double _strtod_l(const char* nptr, char** endptr, _locale_t locale) {
return locale_mock::instance->strtod_l(nptr, endptr, locale);
}
# ifdef __clang__
# pragma clang diagnostic pop
# endif
# pragma warning(pop)
#endif
# endif
#if defined(__THROW) && FMT_GCC_VERSION > 0 && FMT_GCC_VERSION <= 408
#define FMT_LOCALE_THROW __THROW
#else
#define FMT_LOCALE_THROW
#endif
# if defined(__THROW) && FMT_GCC_VERSION > 0 && FMT_GCC_VERSION <= 408
# define FMT_LOCALE_THROW __THROW
# else
# define FMT_LOCALE_THROW
# endif
LocaleType newlocale(int category_mask, const char *locale, LocaleType base) FMT_LOCALE_THROW {
return LocaleMock::instance->newlocale(category_mask, locale, base);
}
#if defined(__APPLE__) || (defined(__FreeBSD__) && __FreeBSD_version < 1200002)
# if defined(__APPLE__) || \
(defined(__FreeBSD__) && __FreeBSD_version < 1200002)
typedef int FreeLocaleResult;
#else
# else
typedef void FreeLocaleResult;
#endif
# endif
FreeLocaleResult freelocale(LocaleType locale) FMT_LOCALE_THROW {
LocaleMock::instance->freelocale(locale);
FreeLocaleResult freelocale(locale_type locale) FMT_LOCALE_THROW {
locale_mock::instance->freelocale(locale);
return FreeLocaleResult();
}
double strtod_l(const char *nptr, char **endptr, LocaleType locale) FMT_LOCALE_THROW {
return LocaleMock::instance->strtod_l(nptr, endptr, locale);
double strtod_l(const char* nptr, char** endptr,
locale_type locale) FMT_LOCALE_THROW {
return locale_mock::instance->strtod_l(nptr, endptr, locale);
}
#undef FMT_LOCALE_THROW
# undef FMT_LOCALE_THROW
# ifndef _WIN32
locale_t test::newlocale(int category_mask, const char* locale, locale_t base) {
return locale_mock::instance->newlocale(category_mask, locale, base);
}
TEST(LocaleTest, LocaleMock) {
ScopedMock<LocaleMock> mock;
LocaleType locale = reinterpret_cast<LocaleType>(11);
ScopedMock<locale_mock> mock;
locale_type locale = reinterpret_cast<locale_type>(11);
EXPECT_CALL(mock, newlocale(222, StrEq("foo"), locale));
newlocale(222, "foo", locale);
FMT_SYSTEM(newlocale(222, "foo", locale));
}
# endif
TEST(LocaleTest, Locale) {
#ifndef LC_NUMERIC_MASK
# ifndef LC_NUMERIC_MASK
enum { LC_NUMERIC_MASK = LC_NUMERIC };
#endif
ScopedMock<LocaleMock> mock;
LocaleType impl = reinterpret_cast<LocaleType>(42);
EXPECT_CALL(mock, newlocale(LC_NUMERIC_MASK, StrEq("C"), FMT_NULL))
# endif
ScopedMock<locale_mock> mock;
locale_type impl = reinterpret_cast<locale_type>(42);
EXPECT_CALL(mock, newlocale(LC_NUMERIC_MASK, StrEq("C"), nullptr))
.WillOnce(Return(impl));
EXPECT_CALL(mock, freelocale(impl));
fmt::Locale locale;
EXPECT_EQ(impl, locale.get());
fmt::locale loc;
EXPECT_EQ(impl, loc.get());
}
TEST(LocaleTest, Strtod) {
ScopedMock<LocaleMock> mock;
ScopedMock<locale_mock> mock;
EXPECT_CALL(mock, newlocale(_, _, _))
.WillOnce(Return(reinterpret_cast<LocaleType>(42)));
.WillOnce(Return(reinterpret_cast<locale_type>(42)));
EXPECT_CALL(mock, freelocale(_));
fmt::Locale locale;
const char *str = "4.2";
fmt::locale loc;
const char* str = "4.2";
char end = 'x';
EXPECT_CALL(mock, strtod_l(str, _, locale.get()))
EXPECT_CALL(mock, strtod_l(str, _, loc.get()))
.WillOnce(testing::DoAll(testing::SetArgPointee<1>(&end), Return(777)));
EXPECT_EQ(777, locale.strtod(str));
EXPECT_EQ(777, loc.strtod(str));
EXPECT_EQ(&end, str);
}

View file

@ -9,7 +9,11 @@
#define FMT_POSIX_TEST_H
#include <errno.h>
#include <locale.h>
#include <stdio.h>
#ifdef __APPLE__
# include <xlocale.h>
#endif
#ifdef _WIN32
# include <windows.h>
@ -28,13 +32,13 @@ namespace test {
// Size type for read and write.
typedef size_t size_t;
typedef ssize_t ssize_t;
int open(const char *path, int oflag, int mode);
int fstat(int fd, struct stat *buf);
int open(const char* path, int oflag, int mode);
int fstat(int fd, struct stat* buf);
#else
typedef unsigned size_t;
typedef int ssize_t;
errno_t sopen_s(
int* pfh, const char *filename, int oflag, int shflag, int pmode);
errno_t sopen_s(int* pfh, const char* filename, int oflag, int shflag,
int pmode);
#endif
#ifndef _WIN32
@ -48,20 +52,24 @@ int close(int fildes);
int dup(int fildes);
int dup2(int fildes, int fildes2);
FILE *fdopen(int fildes, const char *mode);
FILE* fdopen(int fildes, const char* mode);
ssize_t read(int fildes, void *buf, size_t nbyte);
ssize_t write(int fildes, const void *buf, size_t nbyte);
ssize_t read(int fildes, void* buf, size_t nbyte);
ssize_t write(int fildes, const void* buf, size_t nbyte);
#ifndef _WIN32
int pipe(int fildes[2]);
#else
int pipe(int *pfds, unsigned psize, int textmode);
int pipe(int* pfds, unsigned psize, int textmode);
#endif
FILE *fopen(const char *filename, const char *mode);
int fclose(FILE *stream);
int (fileno)(FILE *stream);
FILE* fopen(const char* filename, const char* mode);
int fclose(FILE* stream);
int(fileno)(FILE* stream);
#if defined(FMT_LOCALE) && !defined(_WIN32)
locale_t newlocale(int category_mask, const char* locale, locale_t base);
#endif
} // namespace test
#define FMT_SYSTEM(call) test::call

View file

@ -5,17 +5,19 @@
//
// For the license information refer to format.h.
#include "fmt/printf.h"
#include <cctype>
#include <climits>
#include <cstring>
#include "fmt/core.h"
#include "fmt/printf.h"
#include "gtest-extra.h"
#include "util.h"
using fmt::format;
using fmt::format_error;
using fmt::internal::max_value;
const unsigned BIG_NUM = INT_MAX + 1u;
@ -35,11 +37,11 @@ static std::wstring make_positional(fmt::wstring_view format) {
// A wrapper around fmt::sprintf to workaround bogus warnings about invalid
// format strings in MSVC.
template <typename... Args>
std::string test_sprintf(fmt::string_view format, const Args &... args) {
std::string test_sprintf(fmt::string_view format, const Args&... args) {
return fmt::sprintf(format, args...);
}
template <typename... Args>
std::wstring test_sprintf(fmt::wstring_view format, const Args &... args) {
std::wstring test_sprintf(fmt::wstring_view format, const Args&... args) {
return fmt::sprintf(format, args...);
}
@ -69,11 +71,10 @@ TEST(PrintfTest, Escape) {
TEST(PrintfTest, PositionalArgs) {
EXPECT_EQ("42", test_sprintf("%1$d", 42));
EXPECT_EQ("before 42", test_sprintf("before %1$d", 42));
EXPECT_EQ("42 after", test_sprintf("%1$d after",42));
EXPECT_EQ("42 after", test_sprintf("%1$d after", 42));
EXPECT_EQ("before 42 after", test_sprintf("before %1$d after", 42));
EXPECT_EQ("answer = 42", test_sprintf("%1$s = %2$d", "answer", 42));
EXPECT_EQ("42 is the answer",
test_sprintf("%2$d is the %1$s", "answer", 42));
EXPECT_EQ("42 is the answer", test_sprintf("%2$d is the %1$s", "answer", 42));
EXPECT_EQ("abracadabra", test_sprintf("%1$s%2$s%1$s", "abra", "cad"));
}
@ -82,26 +83,26 @@ TEST(PrintfTest, AutomaticArgIndexing) {
}
TEST(PrintfTest, NumberIsTooBigInArgIndex) {
EXPECT_THROW_MSG(test_sprintf(format("%{}$", BIG_NUM)),
format_error, "number is too big");
EXPECT_THROW_MSG(test_sprintf(format("%{}$d", BIG_NUM)),
format_error, "number is too big");
EXPECT_THROW_MSG(test_sprintf(format("%{}$", BIG_NUM)), format_error,
"number is too big");
EXPECT_THROW_MSG(test_sprintf(format("%{}$d", BIG_NUM)), format_error,
"number is too big");
}
TEST(PrintfTest, SwitchArgIndexing) {
EXPECT_THROW_MSG(test_sprintf("%1$d%", 1, 2),
format_error, "cannot switch from manual to automatic argument indexing");
EXPECT_THROW_MSG(test_sprintf("%1$d%", 1, 2), format_error,
"cannot switch from manual to automatic argument indexing");
EXPECT_THROW_MSG(test_sprintf(format("%1$d%{}d", BIG_NUM), 1, 2),
format_error, "number is too big");
EXPECT_THROW_MSG(test_sprintf("%1$d%d", 1, 2),
format_error, "cannot switch from manual to automatic argument indexing");
EXPECT_THROW_MSG(test_sprintf("%1$d%d", 1, 2), format_error,
"cannot switch from manual to automatic argument indexing");
EXPECT_THROW_MSG(test_sprintf("%d%1$", 1, 2),
format_error, "cannot switch from automatic to manual argument indexing");
EXPECT_THROW_MSG(test_sprintf(format("%d%{}$d", BIG_NUM), 1, 2),
format_error, "number is too big");
EXPECT_THROW_MSG(test_sprintf("%d%1$d", 1, 2),
format_error, "cannot switch from automatic to manual argument indexing");
EXPECT_THROW_MSG(test_sprintf("%d%1$", 1, 2), format_error,
"cannot switch from automatic to manual argument indexing");
EXPECT_THROW_MSG(test_sprintf(format("%d%{}$d", BIG_NUM), 1, 2), format_error,
"number is too big");
EXPECT_THROW_MSG(test_sprintf("%d%1$d", 1, 2), format_error,
"cannot switch from automatic to manual argument indexing");
// Indexing errors override width errors.
EXPECT_THROW_MSG(test_sprintf(format("%d%1${}d", BIG_NUM), 1, 2),
@ -115,13 +116,13 @@ TEST(PrintfTest, InvalidArgIndex) {
"argument index out of range");
EXPECT_THROW_MSG(test_sprintf("%2$d", 42), format_error,
"argument index out of range");
EXPECT_THROW_MSG(test_sprintf(format("%{}$d", INT_MAX), 42),
format_error, "argument index out of range");
EXPECT_THROW_MSG(test_sprintf(format("%{}$d", INT_MAX), 42), format_error,
"argument index out of range");
EXPECT_THROW_MSG(test_sprintf("%2$", 42),
format_error, "argument index out of range");
EXPECT_THROW_MSG(test_sprintf(format("%{}$d", BIG_NUM), 42),
format_error, "number is too big");
EXPECT_THROW_MSG(test_sprintf("%2$", 42), format_error,
"argument index out of range");
EXPECT_THROW_MSG(test_sprintf(format("%{}$d", BIG_NUM), 42), format_error,
"number is too big");
}
TEST(PrintfTest, DefaultAlignRight) {
@ -175,8 +176,8 @@ TEST(PrintfTest, HashFlag) {
EXPECT_PRINTF("0x42", "%#x", 0x42);
EXPECT_PRINTF("0X42", "%#X", 0x42);
EXPECT_PRINTF(
fmt::format("0x{:x}", static_cast<unsigned>(-0x42)), "%#x", -0x42);
EXPECT_PRINTF(fmt::format("0x{:x}", static_cast<unsigned>(-0x42)), "%#x",
-0x42);
EXPECT_PRINTF("0", "%#x", 0);
EXPECT_PRINTF("0x0042", "%#06x", 0x42);
@ -210,10 +211,10 @@ TEST(PrintfTest, Width) {
EXPECT_THROW_MSG(test_sprintf("%5-5d", 42), format_error,
"invalid type specifier");
EXPECT_THROW_MSG(test_sprintf(format("%{}d", BIG_NUM), 42),
format_error, "number is too big");
EXPECT_THROW_MSG(test_sprintf(format("%1${}d", BIG_NUM), 42),
format_error, "number is too big");
EXPECT_THROW_MSG(test_sprintf(format("%{}d", BIG_NUM), 42), format_error,
"number is too big");
EXPECT_THROW_MSG(test_sprintf(format("%1${}d", BIG_NUM), 42), format_error,
"number is too big");
}
TEST(PrintfTest, DynamicWidth) {
@ -253,8 +254,7 @@ TEST(PrintfTest, FloatPrecision) {
safe_sprintf(buffer, "%.3e", 1234.5678);
EXPECT_PRINTF(buffer, "%.3e", 1234.5678);
EXPECT_PRINTF("1234.568", "%.3f", 1234.5678);
safe_sprintf(buffer, "%.3g", 1234.5678);
EXPECT_PRINTF(buffer, "%.3g", 1234.5678);
EXPECT_PRINTF("1.23e+03", "%.3g", 1234.5678);
safe_sprintf(buffer, "%.3a", 1234.5678);
EXPECT_PRINTF(buffer, "%.3a", 1234.5678);
}
@ -279,12 +279,10 @@ TEST(PrintfTest, DynamicPrecision) {
}
}
template <typename T>
struct make_signed { typedef T type; };
template <typename T> struct make_signed { typedef T type; };
#define SPECIALIZE_MAKE_SIGNED(T, S) \
template <> \
struct make_signed<T> { typedef S type; }
template <> struct make_signed<T> { typedef S type; }
SPECIALIZE_MAKE_SIGNED(char, signed char);
SPECIALIZE_MAKE_SIGNED(unsigned char, signed char);
@ -295,24 +293,23 @@ SPECIALIZE_MAKE_SIGNED(unsigned long long, long long);
// Test length format specifier ``length_spec``.
template <typename T, typename U>
void TestLength(const char *length_spec, U value) {
void TestLength(const char* length_spec, U value) {
long long signed_value = 0;
unsigned long long unsigned_value = 0;
// Apply integer promotion to the argument.
using std::numeric_limits;
unsigned long long max = numeric_limits<U>::max();
unsigned long long max = max_value<U>();
using fmt::internal::const_check;
if (const_check(max <= static_cast<unsigned>(numeric_limits<int>::max()))) {
if (const_check(max <= static_cast<unsigned>(max_value<int>()))) {
signed_value = static_cast<int>(value);
unsigned_value = static_cast<unsigned>(value);
} else if (const_check(max <= numeric_limits<unsigned>::max())) {
unsigned_value = static_cast<unsigned long long>(value);
} else if (const_check(max <= max_value<unsigned>())) {
signed_value = static_cast<unsigned>(value);
unsigned_value = static_cast<unsigned>(value);
unsigned_value = static_cast<unsigned long long>(value);
}
if (sizeof(U) <= sizeof(int) && sizeof(int) < sizeof(T)) {
signed_value = static_cast<long long>(value);
unsigned_value =
static_cast<typename std::make_unsigned<unsigned>::type>(value);
unsigned_value = static_cast<unsigned long long>(
static_cast<typename std::make_unsigned<unsigned>::type>(value));
} else {
signed_value = static_cast<typename make_signed<T>::type>(value);
unsigned_value = static_cast<typename std::make_unsigned<T>::type>(value);
@ -335,27 +332,28 @@ void TestLength(const char *length_spec, U value) {
EXPECT_PRINTF(os.str(), fmt::format("%{}X", length_spec), value);
}
template <typename T>
void TestLength(const char *length_spec) {
T min = std::numeric_limits<T>::min(), max = std::numeric_limits<T>::max();
template <typename T> void TestLength(const char* length_spec) {
T min = std::numeric_limits<T>::min(), max = max_value<T>();
TestLength<T>(length_spec, 42);
TestLength<T>(length_spec, -42);
TestLength<T>(length_spec, min);
TestLength<T>(length_spec, max);
long long long_long_min = std::numeric_limits<long long>::min();
if (static_cast<long long>(min) > long_long_min)
TestLength<T>(length_spec, static_cast<long long>(min) - 1);
unsigned long long long_long_max = std::numeric_limits<long long>::max();
unsigned long long long_long_max = max_value<long long>();
if (static_cast<unsigned long long>(max) < long_long_max)
TestLength<T>(length_spec, static_cast<long long>(max) + 1);
TestLength<T>(length_spec, std::numeric_limits<short>::min());
TestLength<T>(length_spec, std::numeric_limits<unsigned short>::max());
TestLength<T>(length_spec, max_value<unsigned short>());
TestLength<T>(length_spec, std::numeric_limits<int>::min());
TestLength<T>(length_spec, std::numeric_limits<int>::max());
TestLength<T>(length_spec, max_value<int>());
TestLength<T>(length_spec, std::numeric_limits<unsigned>::min());
TestLength<T>(length_spec, std::numeric_limits<unsigned>::max());
TestLength<T>(length_spec, max_value<unsigned>());
TestLength<T>(length_spec, std::numeric_limits<long long>::min());
TestLength<T>(length_spec, std::numeric_limits<long long>::max());
TestLength<T>(length_spec, max_value<long long>());
TestLength<T>(length_spec, std::numeric_limits<unsigned long long>::min());
TestLength<T>(length_spec, std::numeric_limits<unsigned long long>::max());
TestLength<T>(length_spec, max_value<unsigned long long>());
}
TEST(PrintfTest, Length) {
@ -371,9 +369,9 @@ TEST(PrintfTest, Length) {
TestLength<intmax_t>("j");
TestLength<std::size_t>("z");
TestLength<std::ptrdiff_t>("t");
long double max = std::numeric_limits<long double>::max();
EXPECT_PRINTF(fmt::format("{}", max), "%g", max);
EXPECT_PRINTF(fmt::format("{}", max), "%Lg", max);
long double max = max_value<long double>();
EXPECT_PRINTF(fmt::format("{:.6}", max), "%g", max);
EXPECT_PRINTF(fmt::format("{:.6}", max), "%Lg", max);
}
TEST(PrintfTest, Bool) {
@ -394,7 +392,7 @@ TEST(PrintfTest, Int) {
TEST(PrintfTest, long_long) {
// fmt::printf allows passing long long arguments to %d without length
// specifiers.
long long max = std::numeric_limits<long long>::max();
long long max = max_value<long long>();
EXPECT_PRINTF(fmt::format("{}", max), "%d", max);
}
@ -411,6 +409,9 @@ TEST(PrintfTest, Float) {
EXPECT_PRINTF(buffer, "%E", 392.65);
EXPECT_PRINTF("392.65", "%g", 392.65);
EXPECT_PRINTF("392.65", "%G", 392.65);
EXPECT_PRINTF("392", "%g", 392.0);
EXPECT_PRINTF("392", "%G", 392.0);
EXPECT_PRINTF("4.56e-07", "%g", 0.000000456);
safe_sprintf(buffer, "%a", -392.65);
EXPECT_EQ(buffer, format("{:a}", -392.65));
safe_sprintf(buffer, "%A", -392.65);
@ -428,44 +429,44 @@ TEST(PrintfTest, Inf) {
TEST(PrintfTest, Char) {
EXPECT_PRINTF("x", "%c", 'x');
int max = std::numeric_limits<int>::max();
int max = max_value<int>();
EXPECT_PRINTF(fmt::format("{}", static_cast<char>(max)), "%c", max);
//EXPECT_PRINTF("x", "%lc", L'x');
// EXPECT_PRINTF("x", "%lc", L'x');
EXPECT_PRINTF(L"x", L"%c", L'x');
EXPECT_PRINTF(fmt::format(L"{}", static_cast<wchar_t>(max)), L"%c", max);
}
TEST(PrintfTest, String) {
EXPECT_PRINTF("abc", "%s", "abc");
const char *null_str = FMT_NULL;
const char* null_str = nullptr;
EXPECT_PRINTF("(null)", "%s", null_str);
EXPECT_PRINTF(" (null)", "%10s", null_str);
EXPECT_PRINTF(L"abc", L"%s", L"abc");
const wchar_t *null_wstr = FMT_NULL;
const wchar_t* null_wstr = nullptr;
EXPECT_PRINTF(L"(null)", L"%s", null_wstr);
EXPECT_PRINTF(L" (null)", L"%10s", null_wstr);
}
TEST(PrintfTest, Pointer) {
int n;
void *p = &n;
void* p = &n;
EXPECT_PRINTF(fmt::format("{}", p), "%p", p);
p = FMT_NULL;
p = nullptr;
EXPECT_PRINTF("(nil)", "%p", p);
EXPECT_PRINTF(" (nil)", "%10p", p);
const char *s = "test";
const char* s = "test";
EXPECT_PRINTF(fmt::format("{:p}", s), "%p", s);
const char *null_str = FMT_NULL;
const char* null_str = nullptr;
EXPECT_PRINTF("(nil)", "%p", null_str);
p = &n;
EXPECT_PRINTF(fmt::format(L"{}", p), L"%p", p);
p = FMT_NULL;
p = nullptr;
EXPECT_PRINTF(L"(nil)", L"%p", p);
EXPECT_PRINTF(L" (nil)", L"%10p", p);
const wchar_t *w = L"test";
const wchar_t* w = L"test";
EXPECT_PRINTF(fmt::format(L"{:p}", w), L"%p", w);
const wchar_t *null_wstr = FMT_NULL;
const wchar_t* null_wstr = nullptr;
EXPECT_PRINTF(L"(nil)", L"%p", null_wstr);
}
@ -473,16 +474,18 @@ TEST(PrintfTest, Location) {
// TODO: test %n
}
enum E { A = 42 };
enum test_enum { answer = 42 };
TEST(PrintfTest, Enum) {
EXPECT_PRINTF("42", "%d", A);
EXPECT_PRINTF("42", "%d", answer);
volatile test_enum volatile_enum = answer;
EXPECT_PRINTF("42", "%d", volatile_enum);
}
#if FMT_USE_FILE_DESCRIPTORS
#if FMT_USE_FCNTL
TEST(PrintfTest, Examples) {
const char *weekday = "Thursday";
const char *month = "August";
const char* weekday = "Thursday";
const char* month = "August";
int day = 21;
EXPECT_WRITE(stdout, fmt::printf("%1$s, %3$d %2$s", weekday, month, day),
"Thursday, 21 August");
@ -496,12 +499,12 @@ TEST(PrintfTest, PrintfError) {
}
#endif
TEST(PrintfTest, WideString) {
EXPECT_EQ(L"abc", fmt::sprintf(L"%s", L"abc"));
}
TEST(PrintfTest, WideString) { EXPECT_EQ(L"abc", fmt::sprintf(L"%s", L"abc")); }
TEST(PrintfTest, PrintfCustom) {
EXPECT_EQ("abc", test_sprintf("%s", TestString("abc")));
// The test is disabled for now because it requires decoupling
// fallback_formatter::format from format_context.
//EXPECT_EQ("abc", test_sprintf("%s", TestString("abc")));
}
TEST(PrintfTest, OStream) {
@ -520,7 +523,7 @@ TEST(PrintfTest, VPrintf) {
EXPECT_WRITE(stdout, fmt::vfprintf(std::cout, "%d", args), "42");
}
template<typename... Args>
template <typename... Args>
void check_format_string_regression(fmt::string_view s, const Args&... args) {
fmt::sprintf(s, args...);
}
@ -529,41 +532,90 @@ TEST(PrintfTest, CheckFormatStringRegression) {
check_format_string_regression("%c%s", 'x', "");
}
TEST(PrintfTest, FixedLargeExponent) {
EXPECT_EQ("1000000000000000000000", fmt::sprintf("%.*f", -13, 1e21));
}
TEST(PrintfTest, VSPrintfMakeArgsExample) {
fmt::format_arg_store<fmt::printf_context, int, const char *> as{
42, "something"};
fmt::format_arg_store<fmt::printf_context, int, const char*> as{42,
"something"};
fmt::basic_format_args<fmt::printf_context> args(as);
EXPECT_EQ(
"[42] something happened", fmt::vsprintf("[%d] %s happened", args));
EXPECT_EQ("[42] something happened", fmt::vsprintf("[%d] %s happened", args));
auto as2 = fmt::make_printf_args(42, "something");
fmt::basic_format_args<fmt::printf_context> args2(as2);
EXPECT_EQ(
"[42] something happened", fmt::vsprintf("[%d] %s happened", args2));
//the older gcc versions can't cast the return value
EXPECT_EQ("[42] something happened",
fmt::vsprintf("[%d] %s happened", args2));
// The older gcc versions can't cast the return value.
#if !defined(__GNUC__) || (__GNUC__ > 4)
EXPECT_EQ(
"[42] something happened",
fmt::vsprintf(
"[%d] %s happened", fmt::make_printf_args(42, "something")));
EXPECT_EQ("[42] something happened",
fmt::vsprintf("[%d] %s happened",
{fmt::make_printf_args(42, "something")}));
#endif
}
TEST(PrintfTest, VSPrintfMakeWArgsExample) {
fmt::format_arg_store<fmt::wprintf_context, int, const wchar_t *> as{
fmt::format_arg_store<fmt::wprintf_context, int, const wchar_t*> as{
42, L"something"};
fmt::basic_format_args<fmt::wprintf_context> args(as);
EXPECT_EQ(
L"[42] something happened",
EXPECT_EQ(L"[42] something happened",
fmt::vsprintf(L"[%d] %s happened", args));
auto as2 = fmt::make_wprintf_args(42, L"something");
fmt::basic_format_args<fmt::wprintf_context> args2(as2);
EXPECT_EQ(
L"[42] something happened", fmt::vsprintf(L"[%d] %s happened", args2));
EXPECT_EQ(L"[42] something happened",
fmt::vsprintf(L"[%d] %s happened", args2));
// the older gcc versions can't cast the return value
#if !defined(__GNUC__) || (__GNUC__ > 4)
EXPECT_EQ(
L"[42] something happened",
fmt::vsprintf(
L"[%d] %s happened", fmt::make_wprintf_args(42, L"something")));
EXPECT_EQ(L"[42] something happened",
fmt::vsprintf(L"[%d] %s happened",
{fmt::make_wprintf_args(42, L"something")}));
#endif
}
typedef fmt::printf_arg_formatter<fmt::buffer_range<char>> formatter_t;
typedef fmt::basic_printf_context<formatter_t::iterator, char> context_t;
// A custom printf argument formatter that doesn't print `-` for floating-point
// values rounded to 0.
class custom_printf_arg_formatter : public formatter_t {
public:
using formatter_t::iterator;
custom_printf_arg_formatter(formatter_t::iterator iter,
formatter_t::format_specs& specs, context_t& ctx)
: formatter_t(iter, specs, ctx) {}
using formatter_t::operator();
#if FMT_MSC_VER > 0 && FMT_MSC_VER <= 1804
template <typename T, FMT_ENABLE_IF(std::is_floating_point<T>::value)>
iterator operator()(T value){
#else
iterator operator()(double value) {
#endif
// Comparing a float to 0.0 is safe.
if (round(value * pow(10, specs()->precision)) == 0.0) value = 0;
return formatter_t::operator()(value);
}
}
;
typedef fmt::basic_format_args<context_t> format_args_t;
std::string custom_vformat(fmt::string_view format_str, format_args_t args) {
fmt::memory_buffer buffer;
fmt::vprintf<custom_printf_arg_formatter>(buffer, format_str, args);
return std::string(buffer.data(), buffer.size());
}
template <typename... Args>
std::string custom_format(const char* format_str, const Args&... args) {
auto va = fmt::make_printf_args(args...);
return custom_vformat(format_str, {va});
}
TEST(PrintfTest, CustomFormat) {
EXPECT_EQ("0.00", custom_format("%.2f", -.00001));
EXPECT_EQ("0.00", custom_format("%.2f", .00001));
EXPECT_EQ("1.00", custom_format("%.2f", 1.00001));
EXPECT_EQ("-1.00", custom_format("%.2f", -1.00001));
}

View file

@ -9,17 +9,18 @@
// All Rights Reserved
// {fmt} support for ranges, containers and types tuple interface.
/// Check if 'if constexpr' is supported.
#include "fmt/ranges.h"
#include "gtest.h"
// Check if 'if constexpr' is supported.
#if (__cplusplus > 201402L) || \
(defined(_MSVC_LANG) && _MSVC_LANG > 201402L && _MSC_VER >= 1910)
#include "fmt/ranges.h"
#include "gtest.h"
#include <vector>
#include <array>
#include <map>
#include <string>
# include <array>
# include <map>
# include <string>
# include <vector>
TEST(RangesTest, FormatVector) {
std::vector<int32_t> iv{1, 2, 3, 5, 7, 11};
@ -39,21 +40,46 @@ TEST(RangesTest, FormatMap) {
}
TEST(RangesTest, FormatPair) {
std::pair<int64_t, float> pa1{42, 3.14159265358979f};
EXPECT_EQ("(42, 3.14159)", fmt::format("{}", pa1));
std::pair<int64_t, float> pa1{42, 1.5f};
EXPECT_EQ("(42, 1.5)", fmt::format("{}", pa1));
}
TEST(RangesTest, FormatTuple) {
std::tuple<int64_t, float, std::string, char> tu1{42, 3.14159265358979f,
"this is tuple", 'i'};
EXPECT_EQ("(42, 3.14159, \"this is tuple\", 'i')", fmt::format("{}", tu1));
std::tuple<int64_t, float, std::string, char> t{42, 1.5f, "this is tuple",
'i'};
EXPECT_EQ("(42, 1.5, \"this is tuple\", 'i')", fmt::format("{}", t));
EXPECT_EQ("()", fmt::format("{}", std::tuple<>()));
}
TEST(RangesTest, JoinTuple) {
// Value tuple args
std::tuple<char, int, float> t1 = std::make_tuple('a', 1, 2.0f);
EXPECT_EQ("(a, 1, 2.0)", fmt::format("({})", fmt::join(t1, ", ")));
// Testing lvalue tuple args
int x = 4;
std::tuple<char, int&> t2{'b', x};
EXPECT_EQ("b + 4", fmt::format("{}", fmt::join(t2, " + ")));
// Empty tuple
std::tuple<> t3;
EXPECT_EQ("", fmt::format("{}", fmt::join(t3, "|")));
// Single element tuple
std::tuple<float> t4{4.0f};
EXPECT_EQ("4.0", fmt::format("{}", fmt::join(t4, "/")));
}
TEST(RangesTest, JoinInitializerList) {
EXPECT_EQ("1, 2, 3", fmt::format("{}", fmt::join({1, 2, 3}, ", ")));
EXPECT_EQ("fmt rocks !",
fmt::format("{}", fmt::join({"fmt", "rocks", "!"}, " ")));
}
struct my_struct {
int32_t i;
std::string str; // can throw
template <std::size_t N>
decltype(auto) get() const noexcept {
template <std::size_t N> decltype(auto) get() const noexcept {
if constexpr (N == 0)
return i;
else if constexpr (N == 1)
@ -61,8 +87,7 @@ struct my_struct {
}
};
template <std::size_t N>
decltype(auto) get(const my_struct& s) noexcept {
template <std::size_t N> decltype(auto) get(const my_struct& s) noexcept {
return s.get<N>();
}
@ -71,8 +96,7 @@ namespace std {
template <>
struct tuple_size<my_struct> : std::integral_constant<std::size_t, 2> {};
template <std::size_t N>
struct tuple_element<N, my_struct> {
template <std::size_t N> struct tuple_element<N, my_struct> {
using type = decltype(std::declval<my_struct>().get<N>());
};
@ -83,5 +107,36 @@ TEST(RangesTest, FormatStruct) {
EXPECT_EQ("(13, \"my struct\")", fmt::format("{}", mst));
}
TEST(RangesTest, FormatTo) {
char buf[10];
auto end = fmt::format_to(buf, "{}", std::vector{1, 2, 3});
*end = '\0';
EXPECT_STREQ(buf, "{1, 2, 3}");
}
struct path_like {
const path_like* begin() const;
const path_like* end() const;
operator std::string() const;
};
TEST(RangesTest, PathLike) {
EXPECT_FALSE((fmt::is_range<path_like, char>::value));
}
#endif // (__cplusplus > 201402L) || (defined(_MSVC_LANG) && _MSVC_LANG >
// 201402L && _MSC_VER >= 1910)
#ifdef FMT_USE_STRING_VIEW
struct string_like {
const char* begin();
const char* end();
explicit operator fmt::string_view() const { return "foo"; }
explicit operator std::string_view() const { return "foo"; }
};
TEST(RangesTest, FormatStringLike) {
EXPECT_EQ("foo", fmt::format("{}", string_like()));
}
#endif // FMT_USE_STRING_VIEW

114
test/scan-test.cc Normal file
View file

@ -0,0 +1,114 @@
// Formatting library for C++ - scanning API test
//
// Copyright (c) 2019 - present, Victor Zverovich
// All rights reserved.
//
// For the license information refer to format.h.
#include <time.h>
#include <climits>
#include "gmock.h"
#include "gtest-extra.h"
#include "scan.h"
TEST(ScanTest, ReadText) {
fmt::string_view s = "foo";
auto end = fmt::scan(s, "foo");
EXPECT_EQ(end, s.end());
EXPECT_THROW_MSG(fmt::scan("fob", "foo"), fmt::format_error, "invalid input");
}
TEST(ScanTest, ReadInt) {
int n = 0;
fmt::scan("42", "{}", n);
EXPECT_EQ(n, 42);
fmt::scan("-42", "{}", n);
EXPECT_EQ(n, -42);
}
TEST(ScanTest, ReadLongLong) {
long long n = 0;
fmt::scan("42", "{}", n);
EXPECT_EQ(n, 42);
fmt::scan("-42", "{}", n);
EXPECT_EQ(n, -42);
}
TEST(ScanTest, ReadUInt) {
unsigned n = 0;
fmt::scan("42", "{}", n);
EXPECT_EQ(n, 42);
EXPECT_THROW_MSG(fmt::scan("-42", "{}", n), fmt::format_error,
"invalid input");
}
TEST(ScanTest, ReadULongLong) {
unsigned long long n = 0;
fmt::scan("42", "{}", n);
EXPECT_EQ(n, 42);
EXPECT_THROW_MSG(fmt::scan("-42", "{}", n), fmt::format_error,
"invalid input");
}
TEST(ScanTest, ReadString) {
std::string s;
fmt::scan("foo", "{}", s);
EXPECT_EQ(s, "foo");
}
TEST(ScanTest, ReadStringView) {
fmt::string_view s;
fmt::scan("foo", "{}", s);
EXPECT_EQ(s, "foo");
}
#ifndef _WIN32
namespace fmt {
template <> struct scanner<tm> {
std::string format;
scan_parse_context::iterator parse(scan_parse_context& ctx) {
auto it = ctx.begin();
if (it != ctx.end() && *it == ':') ++it;
auto end = it;
while (end != ctx.end() && *end != '}') ++end;
format.reserve(internal::to_unsigned(end - it + 1));
format.append(it, end);
format.push_back('\0');
return end;
}
template <class ScanContext>
typename ScanContext::iterator scan(tm& t, ScanContext& ctx) {
auto result = strptime(ctx.begin(), format.c_str(), &t);
if (!result) throw format_error("failed to parse time");
return result;
}
};
} // namespace fmt
TEST(ScanTest, ReadCustom) {
const char* input = "Date: 1985-10-25";
auto t = tm();
fmt::scan(input, "Date: {0:%Y-%m-%d}", t);
EXPECT_EQ(t.tm_year, 85);
EXPECT_EQ(t.tm_mon, 9);
EXPECT_EQ(t.tm_mday, 25);
}
#endif
TEST(ScanTest, InvalidFormat) {
EXPECT_THROW_MSG(fmt::scan("", "{}"), fmt::format_error,
"argument index out of range");
EXPECT_THROW_MSG(fmt::scan("", "{"), fmt::format_error,
"invalid format string");
}
TEST(ScanTest, Example) {
std::string key;
int value;
fmt::scan("answer = 42", "{} = {}", key, value);
EXPECT_EQ(key, "answer");
EXPECT_EQ(value, 42);
}

237
test/scan.h Normal file
View file

@ -0,0 +1,237 @@
// Formatting library for C++ - scanning API proof of concept
//
// Copyright (c) 2019 - present, Victor Zverovich
// All rights reserved.
//
// For the license information refer to format.h.
#include <array>
#include <cassert>
#include <climits>
#include "fmt/format.h"
FMT_BEGIN_NAMESPACE
template <typename T, typename Char = char> struct scanner {
// A deleted default constructor indicates a disabled scanner.
scanner() = delete;
};
class scan_parse_context {
private:
string_view format_;
public:
using iterator = string_view::iterator;
explicit FMT_CONSTEXPR scan_parse_context(string_view format)
: format_(format) {}
FMT_CONSTEXPR iterator begin() const { return format_.begin(); }
FMT_CONSTEXPR iterator end() const { return format_.end(); }
void advance_to(iterator it) {
format_.remove_prefix(internal::to_unsigned(it - begin()));
}
};
struct scan_context {
private:
string_view input_;
public:
using iterator = const char*;
explicit scan_context(string_view input) : input_(input) {}
iterator begin() const { return input_.data(); }
iterator end() const { return begin() + input_.size(); }
void advance_to(iterator it) {
input_.remove_prefix(internal::to_unsigned(it - begin()));
}
};
namespace internal {
enum class scan_type {
none_type,
int_type,
uint_type,
long_long_type,
ulong_long_type,
string_type,
string_view_type,
custom_type
};
struct custom_scan_arg {
void* value;
void (*scan)(void* arg, scan_parse_context& parse_ctx, scan_context& ctx);
};
class scan_arg {
public:
scan_type type;
union {
int* int_value;
unsigned* uint_value;
long long* long_long_value;
unsigned long long* ulong_long_value;
std::string* string;
fmt::string_view* string_view;
custom_scan_arg custom;
// TODO: more types
};
scan_arg() : type(scan_type::none_type) {}
scan_arg(int& value) : type(scan_type::int_type), int_value(&value) {}
scan_arg(unsigned& value) : type(scan_type::uint_type), uint_value(&value) {}
scan_arg(long long& value)
: type(scan_type::long_long_type), long_long_value(&value) {}
scan_arg(unsigned long long& value)
: type(scan_type::ulong_long_type), ulong_long_value(&value) {}
scan_arg(std::string& value) : type(scan_type::string_type), string(&value) {}
scan_arg(fmt::string_view& value)
: type(scan_type::string_view_type), string_view(&value) {}
template <typename T> scan_arg(T& value) : type(scan_type::custom_type) {
custom.value = &value;
custom.scan = scan_custom_arg<T>;
}
private:
template <typename T>
static void scan_custom_arg(void* arg, scan_parse_context& parse_ctx,
scan_context& ctx) {
scanner<T> s;
parse_ctx.advance_to(s.parse(parse_ctx));
ctx.advance_to(s.scan(*static_cast<T*>(arg), ctx));
}
};
} // namespace internal
struct scan_args {
int size;
const internal::scan_arg* data;
template <size_t N>
scan_args(const std::array<internal::scan_arg, N>& store)
: size(N), data(store.data()) {
static_assert(N < INT_MAX, "too many arguments");
}
};
namespace internal {
struct scan_handler : error_handler {
private:
scan_parse_context parse_ctx_;
scan_context scan_ctx_;
scan_args args_;
int next_arg_id_;
scan_arg arg_;
template <typename T = unsigned> T read_uint() {
T value = 0;
auto it = scan_ctx_.begin(), end = scan_ctx_.end();
while (it != end) {
char c = *it++;
if (c < '0' || c > '9') on_error("invalid input");
// TODO: check overflow
value = value * 10 + static_cast<unsigned>(c - '0');
}
scan_ctx_.advance_to(it);
return value;
}
template <typename T = int> T read_int() {
auto it = scan_ctx_.begin(), end = scan_ctx_.end();
bool negative = it != end && *it == '-';
if (negative) ++it;
scan_ctx_.advance_to(it);
const auto value = read_uint<typename std::make_unsigned<T>::type>();
if (negative) return -static_cast<T>(value);
return static_cast<T>(value);
}
public:
scan_handler(string_view format, string_view input, scan_args args)
: parse_ctx_(format), scan_ctx_(input), args_(args), next_arg_id_(0) {}
const char* pos() const { return scan_ctx_.begin(); }
void on_text(const char* begin, const char* end) {
auto size = to_unsigned(end - begin);
auto it = scan_ctx_.begin();
if (it + size > scan_ctx_.end() ||
!std::equal(begin, end, make_checked(it, size))) {
on_error("invalid input");
}
scan_ctx_.advance_to(it + size);
}
void on_arg_id() { on_arg_id(next_arg_id_++); }
void on_arg_id(int id) {
if (id >= args_.size) on_error("argument index out of range");
arg_ = args_.data[id];
}
void on_arg_id(string_view) { on_error("invalid format"); }
void on_replacement_field(const char*) {
auto it = scan_ctx_.begin(), end = scan_ctx_.end();
switch (arg_.type) {
case scan_type::int_type:
*arg_.int_value = read_int();
break;
case scan_type::uint_type:
*arg_.uint_value = read_uint();
break;
case scan_type::long_long_type:
*arg_.long_long_value = read_int<long long>();
break;
case scan_type::ulong_long_type:
*arg_.ulong_long_value = read_uint<unsigned long long>();
break;
case scan_type::string_type:
while (it != end && *it != ' ') arg_.string->push_back(*it++);
scan_ctx_.advance_to(it);
break;
case scan_type::string_view_type: {
auto s = it;
while (it != end && *it != ' ') ++it;
*arg_.string_view = fmt::string_view(s, to_unsigned(it - s));
scan_ctx_.advance_to(it);
break;
}
case scan_type::none_type:
case scan_type::custom_type:
assert(false);
}
}
const char* on_format_specs(const char* begin, const char*) {
if (arg_.type != scan_type::custom_type) return begin;
parse_ctx_.advance_to(begin);
arg_.custom.scan(arg_.custom.value, parse_ctx_, scan_ctx_);
return parse_ctx_.begin();
}
};
} // namespace internal
template <typename... Args>
std::array<internal::scan_arg, sizeof...(Args)> make_scan_args(Args&... args) {
return {{args...}};
}
string_view::iterator vscan(string_view input, string_view format_str,
scan_args args) {
internal::scan_handler h(format_str, input, args);
internal::parse_format_string<false>(format_str, h);
return input.begin() + (h.pos() - &*input.begin());
}
template <typename... Args>
string_view::iterator scan(string_view input, string_view format_str,
Args&... args) {
return vscan(input, format_str, make_scan_args(args...));
}
FMT_END_NAMESPACE

156
test/std-format-test.cc Normal file
View file

@ -0,0 +1,156 @@
#include <format>
#include "gtest.h"
TEST(StdFormatTest, Escaping) {
using namespace std;
string s = format("{0}-{{", 8); // s == "8-{"
EXPECT_EQ(s, "8-{");
}
TEST(StdFormatTest, Indexing) {
using namespace std;
string s0 = format("{} to {}", "a", "b"); // OK: automatic indexing
string s1 = format("{1} to {0}", "a", "b"); // OK: manual indexing
EXPECT_EQ(s0, "a to b");
EXPECT_EQ(s1, "b to a");
// Error: mixing automatic and manual indexing
EXPECT_THROW(string s2 = format("{0} to {}", "a", "b"), std::format_error);
// Error: mixing automatic and manual indexing
EXPECT_THROW(string s3 = format("{} to {1}", "a", "b"), std::format_error);
}
TEST(StdFormatTest, Alignment) {
using namespace std;
char c = 120;
string s0 = format("{:6}", 42); // s0 == " 42"
string s1 = format("{:6}", 'x'); // s1 == "x "
string s2 = format("{:*<6}", 'x'); // s2 == "x*****"
string s3 = format("{:*>6}", 'x'); // s3 == "*****x"
string s4 = format("{:*^6}", 'x'); // s4 == "**x***"
// Error: '=' with charT and no integer presentation type
EXPECT_THROW(string s5 = format("{:=6}", 'x'), std::format_error);
string s6 = format("{:6d}", c); // s6 == " 120"
string s7 = format("{:6}", true); // s9 == "true "
EXPECT_EQ(s0, " 42");
EXPECT_EQ(s1, "x ");
EXPECT_EQ(s2, "x*****");
EXPECT_EQ(s3, "*****x");
EXPECT_EQ(s4, "**x***");
EXPECT_EQ(s6, " 120");
EXPECT_EQ(s7, "true ");
}
TEST(StdFormatTest, Float) {
using namespace std;
double inf = numeric_limits<double>::infinity();
double nan = numeric_limits<double>::quiet_NaN();
string s0 = format("{0:} {0:+} {0:-} {0: }", 1); // s0 == "1 +1 1 1"
string s1 = format("{0:} {0:+} {0:-} {0: }", -1); // s1 == "-1 -1 -1 -1"
string s2 =
format("{0:} {0:+} {0:-} {0: }", inf); // s2 == "inf +inf inf inf"
string s3 =
format("{0:} {0:+} {0:-} {0: }", nan); // s3 == "nan +nan nan nan"
EXPECT_EQ(s0, "1 +1 1 1");
EXPECT_EQ(s1, "-1 -1 -1 -1");
EXPECT_EQ(s2, "inf +inf inf inf");
EXPECT_EQ(s3, "nan +nan nan nan");
}
TEST(StdFormatTest, Int) {
using namespace std;
string s0 = format("{}", 42); // s0 == "42"
string s1 = format("{0:b} {0:d} {0:o} {0:x}", 42); // s1 == "101010 42 52 2a"
string s2 = format("{0:#x} {0:#X}", 42); // s2 == "0x2a 0X2A"
string s3 = format("{:n}", 1234); // s3 == "1234" (depends on the locale)
EXPECT_EQ(s0, "42");
EXPECT_EQ(s1, "101010 42 52 2a");
EXPECT_EQ(s2, "0x2a 0X2A");
EXPECT_EQ(s3, "1234");
}
#include <format>
enum color { red, green, blue };
const char* color_names[] = {"red", "green", "blue"};
template <> struct std::formatter<color> : std::formatter<const char*> {
auto format(color c, format_context& ctx) {
return formatter<const char*>::format(color_names[c], ctx);
}
};
struct err {};
TEST(StdFormatTest, Formatter) {
std::string s0 = std::format("{}", 42); // OK: library-provided formatter
// std::string s1 = std::format("{}", L"foo"); // Ill-formed: disabled
// formatter
std::string s2 = std::format("{}", red); // OK: user-provided formatter
// std::string s3 = std::format("{}", err{}); // Ill-formed: disabled
// formatter
EXPECT_EQ(s0, "42");
EXPECT_EQ(s2, "red");
}
struct S {
int value;
};
template <> struct std::formatter<S> {
size_t width_arg_id = 0;
// Parses a width argument id in the format { <digit> }.
constexpr auto parse(format_parse_context& ctx) {
auto iter = ctx.begin();
// auto get_char = [&]() { return iter != ctx.end() ? *iter : 0; };
auto get_char = [&]() { return iter != ctx.end() ? *iter : '\0'; };
if (get_char() != '{') return iter;
++iter;
char c = get_char();
if (!isdigit(c) || (++iter, get_char()) != '}')
throw format_error("invalid format");
width_arg_id = c - '0';
ctx.check_arg_id(width_arg_id);
return ++iter;
}
// Formats S with width given by the argument width_arg_id.
auto format(S s, format_context& ctx) {
int width = visit_format_arg(
[](auto value) -> int {
using type = decltype(value);
if constexpr (!is_integral_v<type> || is_same_v<type, bool>)
throw format_error("width is not integral");
// else if (value < 0 || value > numeric_limits<int>::max())
else if (fmt::internal::is_negative(value) ||
value > numeric_limits<int>::max())
throw format_error("invalid width");
else
return static_cast<int>(value);
},
ctx.arg(width_arg_id));
return format_to(ctx.out(), "{0:{1}}", s.value, width);
}
};
TEST(StdFormatTest, Parsing) {
std::string s = std::format("{0:{1}}", S{42}, 10); // s == " 42"
EXPECT_EQ(s, " 42");
}
#if FMT_USE_INT128
template <> struct std::formatter<__int128_t> : std::formatter<long long> {
auto format(__int128_t n, format_context& ctx) {
// Format as a long long since we only want to check if it is possible to
// specialize formatter for __int128_t.
return formatter<long long>::format(static_cast<long long>(n), ctx);
}
};
TEST(StdFormatTest, Int128) {
__int128_t n = 42;
auto s = std::format("{}", n);
EXPECT_EQ(s, "42");
}
#endif // FMT_USE_INT128

View file

@ -13,9 +13,14 @@
class assertion_failure : public std::logic_error {
public:
explicit assertion_failure(const char *message) : std::logic_error(message) {}
explicit assertion_failure(const char* message) : std::logic_error(message) {}
private:
virtual void avoid_weak_vtable();
};
void assertion_failure::avoid_weak_vtable() {}
#define FMT_ASSERT(condition, message) \
if (!(condition)) throw assertion_failure(message);

View file

@ -19,7 +19,7 @@
# define _CrtSetReportMode(a, b)
#endif
int main(int argc, char **argv) {
int main(int argc, char** argv) {
#ifdef _WIN32
// Don't display any error dialogs. This also suppresses message boxes
// on assertion failures in MinGW where _set_error_mode/CrtSetReportMode

View file

@ -1,68 +0,0 @@
// Formatting library for C++ - time formatting tests
//
// Copyright (c) 2012 - present, Victor Zverovich
// All rights reserved.
//
// For the license information refer to format.h.
#ifdef WIN32
#define _CRT_SECURE_NO_WARNINGS
#endif
#include "gmock.h"
#include "fmt/locale.h"
#include "fmt/time.h"
TEST(TimeTest, Format) {
std::tm tm = std::tm();
tm.tm_year = 116;
tm.tm_mon = 3;
tm.tm_mday = 25;
EXPECT_EQ("The date is 2016-04-25.",
fmt::format("The date is {:%Y-%m-%d}.", tm));
}
TEST(TimeTest, GrowBuffer) {
std::string s = "{:";
for (int i = 0; i < 30; ++i)
s += "%c";
s += "}\n";
std::time_t t = std::time(FMT_NULL);
fmt::format(s, *std::localtime(&t));
}
TEST(TimeTest, FormatToEmptyContainer) {
std::string s;
auto time = std::tm();
time.tm_sec = 42;
fmt::format_to(std::back_inserter(s), "{:%S}", time);
EXPECT_EQ(s, "42");
}
TEST(TimeTest, EmptyResult) {
EXPECT_EQ("", fmt::format("{}", std::tm()));
}
static bool EqualTime(const std::tm &lhs, const std::tm &rhs) {
return lhs.tm_sec == rhs.tm_sec &&
lhs.tm_min == rhs.tm_min &&
lhs.tm_hour == rhs.tm_hour &&
lhs.tm_mday == rhs.tm_mday &&
lhs.tm_mon == rhs.tm_mon &&
lhs.tm_year == rhs.tm_year &&
lhs.tm_wday == rhs.tm_wday &&
lhs.tm_yday == rhs.tm_yday &&
lhs.tm_isdst == rhs.tm_isdst;
}
TEST(TimeTest, LocalTime) {
std::time_t t = std::time(FMT_NULL);
std::tm tm = *std::localtime(&t);
EXPECT_TRUE(EqualTime(tm, fmt::localtime(t)));
}
TEST(TimeTest, GMTime) {
std::time_t t = std::time(FMT_NULL);
std::tm tm = *std::gmtime(&t);
EXPECT_TRUE(EqualTime(tm, fmt::gmtime(t)));
}

View file

@ -8,7 +8,7 @@
#include "util.h"
#include <cstring>
void increment(char *s) {
void increment(char* s) {
for (int i = static_cast<int>(std::strlen(s)) - 1; i >= 0; --i) {
if (s[i] != '9') {
++s[i];
@ -30,15 +30,20 @@ std::string get_system_error(int error_code) {
#endif
}
const char *const FILE_CONTENT = "Don't panic!";
const char* const FILE_CONTENT = "Don't panic!";
fmt::buffered_file open_buffered_file(FILE **fp) {
fmt::buffered_file open_buffered_file(FILE** fp) {
#if FMT_USE_FCNTL
fmt::file read_end, write_end;
fmt::file::pipe(read_end, write_end);
write_end.write(FILE_CONTENT, std::strlen(FILE_CONTENT));
write_end.close();
fmt::buffered_file f = read_end.fdopen("r");
if (fp)
*fp = f.get();
if (fp) *fp = f.get();
#else
fmt::buffered_file f("test-file", "w");
fputs(FILE_CONTENT, f.get());
if (fp) *fp = f.get();
#endif
return f;
}

View file

@ -9,9 +9,9 @@
#include <cstdio>
#include <string>
#include "fmt/posix.h"
#include "fmt/os.h"
enum {BUFFER_SIZE = 256};
enum { BUFFER_SIZE = 256 };
#ifdef _MSC_VER
# define FMT_VSNPRINTF vsprintf_s
@ -20,7 +20,7 @@ enum {BUFFER_SIZE = 256};
#endif
template <std::size_t SIZE>
void safe_sprintf(char (&buffer)[SIZE], const char *format, ...) {
void safe_sprintf(char (&buffer)[SIZE], const char* format, ...) {
std::va_list args;
va_start(args, format);
FMT_VSNPRINTF(buffer, SIZE, format, args);
@ -28,19 +28,19 @@ void safe_sprintf(char (&buffer)[SIZE], const char *format, ...) {
}
// Increment a number in a string.
void increment(char *s);
void increment(char* s);
std::string get_system_error(int error_code);
extern const char *const FILE_CONTENT;
extern const char* const FILE_CONTENT;
// Opens a buffered file for reading.
fmt::buffered_file open_buffered_file(FILE **fp = FMT_NULL);
fmt::buffered_file open_buffered_file(FILE** fp = nullptr);
inline FILE *safe_fopen(const char *filename, const char *mode) {
inline FILE* safe_fopen(const char* filename, const char* mode) {
#if defined(_WIN32) && !defined(__MINGW32__)
// Fix MSVC warning about "unsafe" fopen.
FILE *f = 0;
FILE* f = 0;
errno = fopen_s(&f, filename, mode);
return f;
#else
@ -48,34 +48,33 @@ inline FILE *safe_fopen(const char *filename, const char *mode) {
#endif
}
template <typename Char>
class BasicTestString {
template <typename Char> class BasicTestString {
private:
std::basic_string<Char> value_;
static const Char EMPTY[];
public:
explicit BasicTestString(const Char *value = EMPTY) : value_(value) {}
explicit BasicTestString(const Char* value = EMPTY) : value_(value) {}
const std::basic_string<Char> &value() const { return value_; }
const std::basic_string<Char>& value() const { return value_; }
};
template <typename Char>
const Char BasicTestString<Char>::EMPTY[] = {0};
template <typename Char> const Char BasicTestString<Char>::EMPTY[] = {0};
typedef BasicTestString<char> TestString;
typedef BasicTestString<wchar_t> TestWString;
template <typename Char>
std::basic_ostream<Char> &operator<<(
std::basic_ostream<Char> &os, const BasicTestString<Char> &s) {
std::basic_ostream<Char>& operator<<(std::basic_ostream<Char>& os,
const BasicTestString<Char>& s) {
os << s.value();
return os;
}
class Date {
int year_, month_, day_;
public:
Date(int year, int month, int day) : year_(year), month_(month), day_(day) {}