65 lines
2.4 KiB
C++
65 lines
2.4 KiB
C++
/*
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Formatting library for C++ - time formatting
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Copyright (c) 2012 - 2016, Victor Zverovich
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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1. Redistributions of source code must retain the above copyright notice, this
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list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright notice,
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this list of conditions and the following disclaimer in the documentation
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and/or other materials provided with the distribution.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
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ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef FMT_TIME_H_
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#define FMT_TIME_H_
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#include "fmt/format.h"
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#include <ctime>
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namespace fmt {
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template <typename ArgFormatter>
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void format(BasicFormatter<char, ArgFormatter> &f,
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const char *&format_str, const std::tm &tm) {
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if (*format_str == ':')
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++format_str;
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const char *end = format_str;
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while (*end && *end != '}')
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++end;
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if (*end != '}')
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FMT_THROW(FormatError("missing '}' in format string"));
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internal::MemoryBuffer<char, internal::INLINE_BUFFER_SIZE> format;
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format.append(format_str, end + 1);
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format[format.size() - 1] = '\0';
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Buffer<char> &buffer = f.writer().buffer();
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std::size_t start = buffer.size();
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for (;;) {
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std::size_t size = buffer.capacity() - start;
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std::size_t count = std::strftime(&buffer[start], size, &format[0], &tm);
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if (count != 0) {
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buffer.resize(start + count);
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break;
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}
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const std::size_t MIN_GROWTH = 10;
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buffer.reserve(buffer.capacity() + size > MIN_GROWTH ? size : MIN_GROWTH);
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}
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format_str = end + 1;
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}
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}
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#endif // FMT_TIME_H_
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