/usr/include/fmt/time.h is in libfmt3-dev 3.0.1+ds-1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 | /*
Formatting library for C++ - time formatting
Copyright (c) 2012 - 2016, 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>
namespace fmt {
template <typename ArgFormatter>
void format(BasicFormatter<char, ArgFormatter> &f,
const char *&format_str, const std::tm &tm) {
if (*format_str == ':')
++format_str;
const char *end = format_str;
while (*end && *end != '}')
++end;
if (*end != '}')
FMT_THROW(FormatError("missing '}' in format string"));
internal::MemoryBuffer<char, internal::INLINE_BUFFER_SIZE> format;
format.append(format_str, end + 1);
format[format.size() - 1] = '\0';
Buffer<char> &buffer = f.writer().buffer();
std::size_t start = buffer.size();
for (;;) {
std::size_t size = buffer.capacity() - start;
std::size_t count = std::strftime(&buffer[start], size, &format[0], &tm);
if (count != 0) {
buffer.resize(start + count);
break;
}
if (size >= 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;
buffer.reserve(buffer.capacity() + (size > MIN_GROWTH ? size : MIN_GROWTH));
}
format_str = end + 1;
}
}
#endif // FMT_TIME_H_
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