82 lines
1.9 KiB
C++
82 lines
1.9 KiB
C++
/*
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Formatting library for C++ - standard container utilities
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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_CONTAINER_H_
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#define FMT_CONTAINER_H_
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#include "format.h"
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namespace fmt {
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namespace internal {
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/**
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\rst
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A "buffer" that appends data to a standard container (e.g. typically a
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``std::vector`` or ``std::basic_string``).
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\endrst
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*/
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template <typename Container>
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class ContainerBuffer : public Buffer<typename Container::value_type> {
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private:
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Container& container_;
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protected:
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virtual void grow(std::size_t size) FMT_OVERRIDE {
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container_.resize(size);
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this->ptr_ = &container_[0];
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this->capacity_ = size;
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}
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public:
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explicit ContainerBuffer(Container& container) : container_(container) {
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this->size_ = container_.size();
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if (this->size_ > 0) {
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this->ptr_ = &container_[0];
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this->capacity_ = this->size_;
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}
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}
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};
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} // namespace internal
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/**
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\rst
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This class template provides operations for formatting and appending data
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to a standard *container* like ``std::vector`` or ``std::basic_string``.
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**Example**::
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void vecformat(std::vector<char>& dest, fmt::BasicCStringRef<char> format,
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fmt::ArgList args) {
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fmt::BasicContainerWriter<std::vector<char> > appender(dest);
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appender.write(format, args);
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}
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FMT_VARIADIC(void, vecformat, std::vector<char>&,
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fmt::BasicCStringRef<char>);
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\endrst
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*/
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template <class Container>
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class BasicContainerWriter
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: public BasicWriter<typename Container::value_type> {
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private:
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internal::ContainerBuffer<Container> buffer_;
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public:
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/**
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\rst
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Constructs a :class:`fmt::BasicContainerWriter` object.
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\endrst
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*/
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explicit BasicContainerWriter(Container& dest)
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: BasicWriter<typename Container::value_type>(buffer_), buffer_(dest) {}
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};
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} // namespace fmt
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#endif // FMT_CONTAINER_H_
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