mirror of
https://github.com/fmtlib/fmt.git
synced 2025-02-27 21:40:07 +00:00
Merge fmt/time.h into fmt/chrono.h
This commit is contained in:
Victor Zverovich
parent
17e4b53926
commit
a939c75956
@ -18,6 +18,143 @@
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FMT_BEGIN_NAMESPACE
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// Prevents expansion of a preceding token as a function-style macro.
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// Usage: f FMT_NOMACRO()
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#define FMT_NOMACRO
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namespace internal {
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inline null<> localtime_r FMT_NOMACRO(...) { return null<>(); }
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inline null<> localtime_s(...) { return null<>(); }
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inline null<> gmtime_r(...) { return null<>(); }
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inline null<> gmtime_s(...) { return null<>(); }
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} // namespace internal
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// Thread-safe replacement for std::localtime
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inline std::tm localtime(std::time_t time) {
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struct dispatcher {
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std::time_t time_;
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std::tm tm_;
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dispatcher(std::time_t t) : time_(t) {}
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bool run() {
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using namespace fmt::internal;
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return handle(localtime_r(&time_, &tm_));
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}
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bool handle(std::tm* tm) { return tm != FMT_NULL; }
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bool handle(internal::null<>) {
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using namespace fmt::internal;
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return fallback(localtime_s(&tm_, &time_));
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}
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bool fallback(int res) { return res == 0; }
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#if !FMT_MSC_VER
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bool fallback(internal::null<>) {
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using namespace fmt::internal;
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std::tm* tm = std::localtime(&time_);
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if (tm) tm_ = *tm;
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return tm != FMT_NULL;
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}
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#endif
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};
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dispatcher lt(time);
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// Too big time values may be unsupported.
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if (!lt.run()) FMT_THROW(format_error("time_t value out of range"));
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return lt.tm_;
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}
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// Thread-safe replacement for std::gmtime
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inline std::tm gmtime(std::time_t time) {
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struct dispatcher {
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std::time_t time_;
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std::tm tm_;
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dispatcher(std::time_t t) : time_(t) {}
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bool run() {
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using namespace fmt::internal;
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return handle(gmtime_r(&time_, &tm_));
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}
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bool handle(std::tm* tm) { return tm != FMT_NULL; }
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bool handle(internal::null<>) {
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using namespace fmt::internal;
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return fallback(gmtime_s(&tm_, &time_));
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}
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bool fallback(int res) { return res == 0; }
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#if !FMT_MSC_VER
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bool fallback(internal::null<>) {
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std::tm* tm = std::gmtime(&time_);
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if (tm) tm_ = *tm;
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return tm != FMT_NULL;
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}
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#endif
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};
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dispatcher gt(time);
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// Too big time values may be unsupported.
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if (!gt.run()) FMT_THROW(format_error("time_t value out of range"));
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return gt.tm_;
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}
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namespace internal {
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inline std::size_t strftime(char* str, std::size_t count, const char* format,
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const std::tm* time) {
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return std::strftime(str, count, format, time);
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}
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inline std::size_t strftime(wchar_t* str, std::size_t count,
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const wchar_t* format, const std::tm* time) {
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return std::wcsftime(str, count, format, time);
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}
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} // namespace internal
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template <typename Char> struct formatter<std::tm, Char> {
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template <typename ParseContext>
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auto parse(ParseContext& ctx) -> decltype(ctx.begin()) {
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auto it = ctx.begin();
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if (it != ctx.end() && *it == ':') ++it;
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auto end = it;
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while (end != ctx.end() && *end != '}') ++end;
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tm_format.reserve(internal::to_unsigned(end - it + 1));
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tm_format.append(it, end);
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tm_format.push_back('\0');
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return end;
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}
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template <typename FormatContext>
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auto format(const std::tm& tm, FormatContext& ctx) -> decltype(ctx.out()) {
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basic_memory_buffer<Char> buf;
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std::size_t start = buf.size();
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for (;;) {
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std::size_t size = buf.capacity() - start;
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std::size_t count =
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internal::strftime(&buf[start], size, &tm_format[0], &tm);
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if (count != 0) {
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buf.resize(start + count);
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break;
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}
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if (size >= tm_format.size() * 256) {
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// If the buffer is 256 times larger than the format string, assume
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// that `strftime` gives an empty result. There doesn't seem to be a
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// better way to distinguish the two cases:
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// https://github.com/fmtlib/fmt/issues/367
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break;
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}
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const std::size_t MIN_GROWTH = 10;
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buf.reserve(buf.capacity() + (size > MIN_GROWTH ? size : MIN_GROWTH));
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}
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return std::copy(buf.begin(), buf.end(), ctx.out());
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}
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basic_memory_buffer<Char> tm_format;
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};
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namespace internal {
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template <typename Period> FMT_CONSTEXPR const char* get_units() {
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return FMT_NULL;
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@ -8,148 +8,8 @@
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#ifndef FMT_TIME_H_
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#define FMT_TIME_H_
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#include <ctime>
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#include <locale>
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#include "format.h"
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#include "chrono.h"
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FMT_BEGIN_NAMESPACE
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// Prevents expansion of a preceding token as a function-style macro.
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// Usage: f FMT_NOMACRO()
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#define FMT_NOMACRO
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namespace internal {
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inline null<> localtime_r FMT_NOMACRO(...) { return null<>(); }
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inline null<> localtime_s(...) { return null<>(); }
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inline null<> gmtime_r(...) { return null<>(); }
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inline null<> gmtime_s(...) { return null<>(); }
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} // namespace internal
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// Thread-safe replacement for std::localtime
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inline std::tm localtime(std::time_t time) {
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struct dispatcher {
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std::time_t time_;
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std::tm tm_;
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dispatcher(std::time_t t) : time_(t) {}
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bool run() {
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using namespace fmt::internal;
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return handle(localtime_r(&time_, &tm_));
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}
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bool handle(std::tm* tm) { return tm != FMT_NULL; }
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bool handle(internal::null<>) {
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using namespace fmt::internal;
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return fallback(localtime_s(&tm_, &time_));
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}
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bool fallback(int res) { return res == 0; }
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#if !FMT_MSC_VER
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bool fallback(internal::null<>) {
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using namespace fmt::internal;
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std::tm* tm = std::localtime(&time_);
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if (tm) tm_ = *tm;
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return tm != FMT_NULL;
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}
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#endif
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};
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dispatcher lt(time);
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// Too big time values may be unsupported.
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if (!lt.run()) FMT_THROW(format_error("time_t value out of range"));
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return lt.tm_;
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}
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// Thread-safe replacement for std::gmtime
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inline std::tm gmtime(std::time_t time) {
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struct dispatcher {
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std::time_t time_;
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std::tm tm_;
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dispatcher(std::time_t t) : time_(t) {}
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bool run() {
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using namespace fmt::internal;
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return handle(gmtime_r(&time_, &tm_));
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}
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bool handle(std::tm* tm) { return tm != FMT_NULL; }
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bool handle(internal::null<>) {
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using namespace fmt::internal;
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return fallback(gmtime_s(&tm_, &time_));
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}
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bool fallback(int res) { return res == 0; }
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#if !FMT_MSC_VER
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bool fallback(internal::null<>) {
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std::tm* tm = std::gmtime(&time_);
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if (tm) tm_ = *tm;
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return tm != FMT_NULL;
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}
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#endif
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};
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dispatcher gt(time);
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// Too big time values may be unsupported.
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if (!gt.run()) FMT_THROW(format_error("time_t value out of range"));
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return gt.tm_;
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}
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namespace internal {
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inline std::size_t strftime(char* str, std::size_t count, const char* format,
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const std::tm* time) {
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return std::strftime(str, count, format, time);
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}
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inline std::size_t strftime(wchar_t* str, std::size_t count,
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const wchar_t* format, const std::tm* time) {
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return std::wcsftime(str, count, format, time);
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}
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} // namespace internal
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template <typename Char> struct formatter<std::tm, Char> {
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template <typename ParseContext>
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auto parse(ParseContext& ctx) -> decltype(ctx.begin()) {
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auto it = ctx.begin();
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if (it != ctx.end() && *it == ':') ++it;
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auto end = it;
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while (end != ctx.end() && *end != '}') ++end;
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tm_format.reserve(internal::to_unsigned(end - it + 1));
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tm_format.append(it, end);
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tm_format.push_back('\0');
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return end;
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}
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template <typename FormatContext>
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auto format(const std::tm& tm, FormatContext& ctx) -> decltype(ctx.out()) {
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basic_memory_buffer<Char> buf;
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std::size_t start = buf.size();
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for (;;) {
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std::size_t size = buf.capacity() - start;
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std::size_t count =
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internal::strftime(&buf[start], size, &tm_format[0], &tm);
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if (count != 0) {
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buf.resize(start + count);
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break;
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}
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if (size >= tm_format.size() * 256) {
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// If the buffer is 256 times larger than the format string, assume
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// that `strftime` gives an empty result. There doesn't seem to be a
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// better way to distinguish the two cases:
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// https://github.com/fmtlib/fmt/issues/367
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break;
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}
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const std::size_t MIN_GROWTH = 10;
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buf.reserve(buf.capacity() + (size > MIN_GROWTH ? size : MIN_GROWTH));
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}
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return std::copy(buf.begin(), buf.end(), ctx.out());
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}
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basic_memory_buffer<Char> tm_format;
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};
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FMT_END_NAMESPACE
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#warning fmt/time.h is deprecated, use fmt/chrono.h instead
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#endif // FMT_TIME_H_
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@ -9,7 +9,7 @@
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# define _CRT_SECURE_NO_WARNINGS
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#endif
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#include "fmt/time.h"
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#include "fmt/chrono.h"
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#include "fmt/locale.h"
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#include "gmock.h"
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