097203968f
135ab5cf Update version 93d95f17 Fix markup 4f15c72f Fix markup e9b19414 Automatically add package to release c3d1f604 Fix markup c96062bf Update changelog and version number f9c97de4 Add note about errno to the documentation 62df6f27 CMakeLists: Use GNUInstallDirs to set install location 493586cb Fix overflow check 1d751bc6 fix warning in header: signed/unsigned comparison 11415bce Update usage.rst 9982dd01 Fix for warning C5030 in VS2015 42e88c4f Silenced MSVC 2017 constant if expression warning 7a9c1ba1 FMT_VARIADIC_CONST - Support for const variadic methods (#591) 324415c0 Use allocator_traits if available. 5f39721c Fix a warning ca96acbe Add examples 708d9509 fix(Clang CodeGen): remove warnings 9328a074 Fix handling of fixed enums in clang (#580) 2c077dd4 Enable stream exceptions (#581) 933a33a7 Added MSVC checking for support for string_view. bef89db6 Fix a bogus -Wduplicated-branches gcc warning (#573) 2a619d96 Make format work with C++17 std::string_view (#571) e051de37 Use less version 2.6.1 and sudo to fix npm install issues on travis 5de459bf Suppress Clang's warning on zero as a null pointer 16589534 Make ArgMap::init not explicitly instantiated (#563) 3e75d3e0 Fix handling of types convertible to int 89654cd1 to_wstring added 37eb419a Fix noreturn attribute detection (#555) 14d85349 Explicitly cast range length to std::size_t to prevent conversion warnings c2201ce0 Accept wide chars as integers to prevent conversion warning 6efbccb3 Add one more CMake warning fix 032c8380 Fix a segfault in test on glibc 2.26 #551, take 2 6655e804 Fix a segfault in test on glibc 2.26 #551 d16c4d20 Suppress warning about missing noreturn attribute (#549) 9c56a8ce Make format_arg() accept class hierarchies ca0e3830 Update README.rst 81790d72 Update format.h to remove C4574 error on MSVC 14.2 30283443 Fix undefined behavior in UDL macro 4045d7fe Fix warning about missing ' character 89c3bc58 Remove warning C4668 in MSVC for FMT_GCC_VERSION and FMT_HAS_GXX_CXX11 4af9421f Adding OpenSpace to the list of projects 1a398b54 Fixed CMake CMP0048 warning. 589ccc16 Bump version c3817046 Add an error on broken includes 16bdd842 Update scripts b492316d Update version list 91f4ce02 Automatically update version in release script (#431) git-subtree-dir: externals/fmt git-subtree-split: 135ab5cf71ed731fc9fa0653051e7d4884a3652f
108 lines
2.9 KiB
C++
108 lines
2.9 KiB
C++
/*
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Formatting library for C++ - std::ostream support
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Copyright (c) 2012 - 2016, Victor Zverovich
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All rights reserved.
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For the license information refer to format.h.
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*/
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#ifndef FMT_OSTREAM_H_
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#define FMT_OSTREAM_H_
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#include "format.h"
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#include <ostream>
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namespace fmt {
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namespace internal {
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template <class Char>
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class FormatBuf : public std::basic_streambuf<Char> {
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private:
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typedef typename std::basic_streambuf<Char>::int_type int_type;
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typedef typename std::basic_streambuf<Char>::traits_type traits_type;
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Buffer<Char> &buffer_;
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public:
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FormatBuf(Buffer<Char> &buffer) : buffer_(buffer) {}
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protected:
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// The put-area is actually always empty. This makes the implementation
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// simpler and has the advantage that the streambuf and the buffer are always
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// in sync and sputc never writes into uninitialized memory. The obvious
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// disadvantage is that each call to sputc always results in a (virtual) call
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// to overflow. There is no disadvantage here for sputn since this always
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// results in a call to xsputn.
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int_type overflow(int_type ch = traits_type::eof()) FMT_OVERRIDE {
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if (!traits_type::eq_int_type(ch, traits_type::eof()))
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buffer_.push_back(static_cast<Char>(ch));
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return ch;
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}
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std::streamsize xsputn(const Char *s, std::streamsize count) FMT_OVERRIDE {
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buffer_.append(s, s + count);
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return count;
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}
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};
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Yes &convert(std::ostream &);
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struct DummyStream : std::ostream {
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DummyStream(); // Suppress a bogus warning in MSVC.
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// Hide all operator<< overloads from std::ostream.
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template <typename T>
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typename EnableIf<sizeof(T) == 0>::type operator<<(const T &);
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};
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No &operator<<(std::ostream &, int);
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template <typename T>
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struct ConvertToIntImpl<T, true> {
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// Convert to int only if T doesn't have an overloaded operator<<.
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enum {
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value = sizeof(convert(get<DummyStream>() << get<T>())) == sizeof(No)
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};
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};
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// Write the content of w to os.
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FMT_API void write(std::ostream &os, Writer &w);
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} // namespace internal
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// Formats a value.
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template <typename Char, typename ArgFormatter_, typename T>
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void format_arg(BasicFormatter<Char, ArgFormatter_> &f,
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const Char *&format_str, const T &value) {
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internal::MemoryBuffer<Char, internal::INLINE_BUFFER_SIZE> buffer;
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internal::FormatBuf<Char> format_buf(buffer);
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std::basic_ostream<Char> output(&format_buf);
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output.exceptions(std::ios_base::failbit | std::ios_base::badbit);
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output << value;
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BasicStringRef<Char> str(&buffer[0], buffer.size());
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typedef internal::MakeArg< BasicFormatter<Char> > MakeArg;
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format_str = f.format(format_str, MakeArg(str));
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}
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/**
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\rst
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Prints formatted data to the stream *os*.
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**Example**::
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print(cerr, "Don't {}!", "panic");
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\endrst
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*/
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FMT_API void print(std::ostream &os, CStringRef format_str, ArgList args);
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FMT_VARIADIC(void, print, std::ostream &, CStringRef)
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} // namespace fmt
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#ifdef FMT_HEADER_ONLY
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# include "ostream.cc"
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#endif
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#endif // FMT_OSTREAM_H_
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