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Diffstat (limited to 'thirdparty/spdlog/fmt/bundled/chrono.h')
| -rw-r--r-- | thirdparty/spdlog/fmt/bundled/chrono.h | 1116 |
1 files changed, 0 insertions, 1116 deletions
diff --git a/thirdparty/spdlog/fmt/bundled/chrono.h b/thirdparty/spdlog/fmt/bundled/chrono.h deleted file mode 100644 index bdfe2aa0..00000000 --- a/thirdparty/spdlog/fmt/bundled/chrono.h +++ /dev/null @@ -1,1116 +0,0 @@ -// Formatting library for C++ - chrono support -// -// Copyright (c) 2012 - present, Victor Zverovich -// All rights reserved. -// -// For the license information refer to format.h. - -#ifndef FMT_CHRONO_H_ -#define FMT_CHRONO_H_ - -#include <chrono> -#include <ctime> -#include <locale> -#include <sstream> - -#include "format.h" -#include "locale.h" - -FMT_BEGIN_NAMESPACE - -// Enable safe chrono durations, unless explicitly disabled. -#ifndef FMT_SAFE_DURATION_CAST -# define FMT_SAFE_DURATION_CAST 1 -#endif -#if FMT_SAFE_DURATION_CAST - -// For conversion between std::chrono::durations without undefined -// behaviour or erroneous results. -// This is a stripped down version of duration_cast, for inclusion in fmt. -// See https://github.com/pauldreik/safe_duration_cast -// -// Copyright Paul Dreik 2019 -namespace safe_duration_cast { - -template <typename To, typename From, - FMT_ENABLE_IF(!std::is_same<From, To>::value && - std::numeric_limits<From>::is_signed == - std::numeric_limits<To>::is_signed)> -FMT_CONSTEXPR To lossless_integral_conversion(const From from, int& ec) { - ec = 0; - using F = std::numeric_limits<From>; - using T = std::numeric_limits<To>; - static_assert(F::is_integer, "From must be integral"); - static_assert(T::is_integer, "To must be integral"); - - // A and B are both signed, or both unsigned. - if (F::digits <= T::digits) { - // From fits in To without any problem. - } else { - // From does not always fit in To, resort to a dynamic check. - if (from < (T::min)() || from > (T::max)()) { - // outside range. - ec = 1; - return {}; - } - } - return static_cast<To>(from); -} - -/** - * converts From to To, without loss. If the dynamic value of from - * can't be converted to To without loss, ec is set. - */ -template <typename To, typename From, - FMT_ENABLE_IF(!std::is_same<From, To>::value && - std::numeric_limits<From>::is_signed != - std::numeric_limits<To>::is_signed)> -FMT_CONSTEXPR To lossless_integral_conversion(const From from, int& ec) { - ec = 0; - using F = std::numeric_limits<From>; - using T = std::numeric_limits<To>; - static_assert(F::is_integer, "From must be integral"); - static_assert(T::is_integer, "To must be integral"); - - if (detail::const_check(F::is_signed && !T::is_signed)) { - // From may be negative, not allowed! - if (fmt::detail::is_negative(from)) { - ec = 1; - return {}; - } - // From is positive. Can it always fit in To? - if (F::digits > T::digits && - from > static_cast<From>(detail::max_value<To>())) { - ec = 1; - return {}; - } - } - - if (!F::is_signed && T::is_signed && F::digits >= T::digits && - from > static_cast<From>(detail::max_value<To>())) { - ec = 1; - return {}; - } - return static_cast<To>(from); // Lossless conversion. -} - -template <typename To, typename From, - FMT_ENABLE_IF(std::is_same<From, To>::value)> -FMT_CONSTEXPR To lossless_integral_conversion(const From from, int& ec) { - ec = 0; - return from; -} // function - -/** - * converts From to To if possible, otherwise ec is set. - * - * input | output - * ---------------------------------|--------------- - * NaN | NaN - * Inf | Inf - * normal, fits in output | converted (possibly lossy) - * normal, does not fit in output | ec is set - * subnormal | best effort - * -Inf | -Inf - */ -template <typename To, typename From, - FMT_ENABLE_IF(!std::is_same<From, To>::value)> -FMT_CONSTEXPR To safe_float_conversion(const From from, int& ec) { - ec = 0; - using T = std::numeric_limits<To>; - static_assert(std::is_floating_point<From>::value, "From must be floating"); - static_assert(std::is_floating_point<To>::value, "To must be floating"); - - // catch the only happy case - if (std::isfinite(from)) { - if (from >= T::lowest() && from <= (T::max)()) { - return static_cast<To>(from); - } - // not within range. - ec = 1; - return {}; - } - - // nan and inf will be preserved - return static_cast<To>(from); -} // function - -template <typename To, typename From, - FMT_ENABLE_IF(std::is_same<From, To>::value)> -FMT_CONSTEXPR To safe_float_conversion(const From from, int& ec) { - ec = 0; - static_assert(std::is_floating_point<From>::value, "From must be floating"); - return from; -} - -/** - * safe duration cast between integral durations - */ -template <typename To, typename FromRep, typename FromPeriod, - FMT_ENABLE_IF(std::is_integral<FromRep>::value), - FMT_ENABLE_IF(std::is_integral<typename To::rep>::value)> -To safe_duration_cast(std::chrono::duration<FromRep, FromPeriod> from, - int& ec) { - using From = std::chrono::duration<FromRep, FromPeriod>; - ec = 0; - // the basic idea is that we need to convert from count() in the from type - // to count() in the To type, by multiplying it with this: - struct Factor - : std::ratio_divide<typename From::period, typename To::period> {}; - - static_assert(Factor::num > 0, "num must be positive"); - static_assert(Factor::den > 0, "den must be positive"); - - // the conversion is like this: multiply from.count() with Factor::num - // /Factor::den and convert it to To::rep, all this without - // overflow/underflow. let's start by finding a suitable type that can hold - // both To, From and Factor::num - using IntermediateRep = - typename std::common_type<typename From::rep, typename To::rep, - decltype(Factor::num)>::type; - - // safe conversion to IntermediateRep - IntermediateRep count = - lossless_integral_conversion<IntermediateRep>(from.count(), ec); - if (ec) return {}; - // multiply with Factor::num without overflow or underflow - if (detail::const_check(Factor::num != 1)) { - const auto max1 = detail::max_value<IntermediateRep>() / Factor::num; - if (count > max1) { - ec = 1; - return {}; - } - const auto min1 = - (std::numeric_limits<IntermediateRep>::min)() / Factor::num; - if (count < min1) { - ec = 1; - return {}; - } - count *= Factor::num; - } - - if (detail::const_check(Factor::den != 1)) count /= Factor::den; - auto tocount = lossless_integral_conversion<typename To::rep>(count, ec); - return ec ? To() : To(tocount); -} - -/** - * safe duration_cast between floating point durations - */ -template <typename To, typename FromRep, typename FromPeriod, - FMT_ENABLE_IF(std::is_floating_point<FromRep>::value), - FMT_ENABLE_IF(std::is_floating_point<typename To::rep>::value)> -To safe_duration_cast(std::chrono::duration<FromRep, FromPeriod> from, - int& ec) { - using From = std::chrono::duration<FromRep, FromPeriod>; - ec = 0; - if (std::isnan(from.count())) { - // nan in, gives nan out. easy. - return To{std::numeric_limits<typename To::rep>::quiet_NaN()}; - } - // maybe we should also check if from is denormal, and decide what to do about - // it. - - // +-inf should be preserved. - if (std::isinf(from.count())) { - return To{from.count()}; - } - - // the basic idea is that we need to convert from count() in the from type - // to count() in the To type, by multiplying it with this: - struct Factor - : std::ratio_divide<typename From::period, typename To::period> {}; - - static_assert(Factor::num > 0, "num must be positive"); - static_assert(Factor::den > 0, "den must be positive"); - - // the conversion is like this: multiply from.count() with Factor::num - // /Factor::den and convert it to To::rep, all this without - // overflow/underflow. let's start by finding a suitable type that can hold - // both To, From and Factor::num - using IntermediateRep = - typename std::common_type<typename From::rep, typename To::rep, - decltype(Factor::num)>::type; - - // force conversion of From::rep -> IntermediateRep to be safe, - // even if it will never happen be narrowing in this context. - IntermediateRep count = - safe_float_conversion<IntermediateRep>(from.count(), ec); - if (ec) { - return {}; - } - - // multiply with Factor::num without overflow or underflow - if (Factor::num != 1) { - constexpr auto max1 = detail::max_value<IntermediateRep>() / - static_cast<IntermediateRep>(Factor::num); - if (count > max1) { - ec = 1; - return {}; - } - constexpr auto min1 = std::numeric_limits<IntermediateRep>::lowest() / - static_cast<IntermediateRep>(Factor::num); - if (count < min1) { - ec = 1; - return {}; - } - count *= static_cast<IntermediateRep>(Factor::num); - } - - // this can't go wrong, right? den>0 is checked earlier. - if (Factor::den != 1) { - using common_t = typename std::common_type<IntermediateRep, intmax_t>::type; - count /= static_cast<common_t>(Factor::den); - } - - // convert to the to type, safely - using ToRep = typename To::rep; - - const ToRep tocount = safe_float_conversion<ToRep>(count, ec); - if (ec) { - return {}; - } - return To{tocount}; -} -} // namespace safe_duration_cast -#endif - -// Prevents expansion of a preceding token as a function-style macro. -// Usage: f FMT_NOMACRO() -#define FMT_NOMACRO - -namespace detail { -inline null<> localtime_r FMT_NOMACRO(...) { return null<>(); } -inline null<> localtime_s(...) { return null<>(); } -inline null<> gmtime_r(...) { return null<>(); } -inline null<> gmtime_s(...) { return null<>(); } -} // namespace detail - -// Thread-safe replacement for std::localtime -inline std::tm localtime(std::time_t time) { - struct dispatcher { - std::time_t time_; - std::tm tm_; - - dispatcher(std::time_t t) : time_(t) {} - - bool run() { - using namespace fmt::detail; - return handle(localtime_r(&time_, &tm_)); - } - - bool handle(std::tm* tm) { return tm != nullptr; } - - bool handle(detail::null<>) { - using namespace fmt::detail; - return fallback(localtime_s(&tm_, &time_)); - } - - bool fallback(int res) { return res == 0; } - -#if !FMT_MSC_VER - bool fallback(detail::null<>) { - using namespace fmt::detail; - std::tm* tm = std::localtime(&time_); - if (tm) tm_ = *tm; - return tm != nullptr; - } -#endif - }; - dispatcher lt(time); - // Too big time values may be unsupported. - if (!lt.run()) FMT_THROW(format_error("time_t value out of range")); - return lt.tm_; -} - -inline std::tm localtime( - std::chrono::time_point<std::chrono::system_clock> time_point) { - return localtime(std::chrono::system_clock::to_time_t(time_point)); -} - -// Thread-safe replacement for std::gmtime -inline std::tm gmtime(std::time_t time) { - struct dispatcher { - std::time_t time_; - std::tm tm_; - - dispatcher(std::time_t t) : time_(t) {} - - bool run() { - using namespace fmt::detail; - return handle(gmtime_r(&time_, &tm_)); - } - - bool handle(std::tm* tm) { return tm != nullptr; } - - bool handle(detail::null<>) { - using namespace fmt::detail; - return fallback(gmtime_s(&tm_, &time_)); - } - - bool fallback(int res) { return res == 0; } - -#if !FMT_MSC_VER - bool fallback(detail::null<>) { - std::tm* tm = std::gmtime(&time_); - if (tm) tm_ = *tm; - return tm != nullptr; - } -#endif - }; - dispatcher gt(time); - // Too big time values may be unsupported. - if (!gt.run()) FMT_THROW(format_error("time_t value out of range")); - return gt.tm_; -} - -inline std::tm gmtime( - std::chrono::time_point<std::chrono::system_clock> time_point) { - return gmtime(std::chrono::system_clock::to_time_t(time_point)); -} - -namespace detail { -inline size_t strftime(char* str, size_t count, const char* format, - const std::tm* time) { - return std::strftime(str, count, format, time); -} - -inline size_t strftime(wchar_t* str, size_t count, const wchar_t* format, - const std::tm* time) { - return std::wcsftime(str, count, format, time); -} -} // namespace detail - -template <typename Char> -struct formatter<std::chrono::time_point<std::chrono::system_clock>, Char> - : formatter<std::tm, Char> { - template <typename FormatContext> - auto format(std::chrono::time_point<std::chrono::system_clock> val, - FormatContext& ctx) -> decltype(ctx.out()) { - std::tm time = localtime(val); - return formatter<std::tm, Char>::format(time, ctx); - } -}; - -template <typename Char> struct formatter<std::tm, Char> { - template <typename ParseContext> - auto parse(ParseContext& ctx) -> decltype(ctx.begin()) { - auto it = ctx.begin(); - if (it != ctx.end() && *it == ':') ++it; - auto end = it; - while (end != ctx.end() && *end != '}') ++end; - tm_format.reserve(detail::to_unsigned(end - it + 1)); - tm_format.append(it, end); - tm_format.push_back('\0'); - return end; - } - - template <typename FormatContext> - auto format(const std::tm& tm, FormatContext& ctx) -> decltype(ctx.out()) { - basic_memory_buffer<Char> buf; - size_t start = buf.size(); - for (;;) { - size_t size = buf.capacity() - start; - size_t count = detail::strftime(&buf[start], size, &tm_format[0], &tm); - if (count != 0) { - buf.resize(start + count); - break; - } - if (size >= tm_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 size_t MIN_GROWTH = 10; - buf.reserve(buf.capacity() + (size > MIN_GROWTH ? size : MIN_GROWTH)); - } - return std::copy(buf.begin(), buf.end(), ctx.out()); - } - - basic_memory_buffer<Char> tm_format; -}; - -namespace detail { -template <typename Period> FMT_CONSTEXPR const char* get_units() { - return nullptr; -} -template <> FMT_CONSTEXPR const char* get_units<std::atto>() { return "as"; } -template <> FMT_CONSTEXPR const char* get_units<std::femto>() { return "fs"; } -template <> FMT_CONSTEXPR const char* get_units<std::pico>() { return "ps"; } -template <> FMT_CONSTEXPR const char* get_units<std::nano>() { return "ns"; } -template <> FMT_CONSTEXPR const char* get_units<std::micro>() { return "µs"; } -template <> FMT_CONSTEXPR const char* get_units<std::milli>() { return "ms"; } -template <> FMT_CONSTEXPR const char* get_units<std::centi>() { return "cs"; } -template <> FMT_CONSTEXPR const char* get_units<std::deci>() { return "ds"; } -template <> FMT_CONSTEXPR const char* get_units<std::ratio<1>>() { return "s"; } -template <> FMT_CONSTEXPR const char* get_units<std::deca>() { return "das"; } -template <> FMT_CONSTEXPR const char* get_units<std::hecto>() { return "hs"; } -template <> FMT_CONSTEXPR const char* get_units<std::kilo>() { return "ks"; } -template <> FMT_CONSTEXPR const char* get_units<std::mega>() { return "Ms"; } -template <> FMT_CONSTEXPR const char* get_units<std::giga>() { return "Gs"; } -template <> FMT_CONSTEXPR const char* get_units<std::tera>() { return "Ts"; } -template <> FMT_CONSTEXPR const char* get_units<std::peta>() { return "Ps"; } -template <> FMT_CONSTEXPR const char* get_units<std::exa>() { return "Es"; } -template <> FMT_CONSTEXPR const char* get_units<std::ratio<60>>() { - return "m"; -} -template <> FMT_CONSTEXPR const char* get_units<std::ratio<3600>>() { - return "h"; -} - -enum class numeric_system { - standard, - // Alternative numeric system, e.g. 十二 instead of 12 in ja_JP locale. - alternative -}; - -// Parses a put_time-like format string and invokes handler actions. -template <typename Char, typename Handler> -FMT_CONSTEXPR const Char* parse_chrono_format(const Char* begin, - const Char* end, - Handler&& handler) { - auto ptr = begin; - while (ptr != end) { - auto c = *ptr; - if (c == '}') break; - if (c != '%') { - ++ptr; - continue; - } - if (begin != ptr) handler.on_text(begin, ptr); - ++ptr; // consume '%' - if (ptr == end) FMT_THROW(format_error("invalid format")); - c = *ptr++; - switch (c) { - case '%': - handler.on_text(ptr - 1, ptr); - break; - case 'n': { - const Char newline[] = {'\n'}; - handler.on_text(newline, newline + 1); - break; - } - case 't': { - const Char tab[] = {'\t'}; - handler.on_text(tab, tab + 1); - break; - } - // Day of the week: - case 'a': - handler.on_abbr_weekday(); - break; - case 'A': - handler.on_full_weekday(); - break; - case 'w': - handler.on_dec0_weekday(numeric_system::standard); - break; - case 'u': - handler.on_dec1_weekday(numeric_system::standard); - break; - // Month: - case 'b': - handler.on_abbr_month(); - break; - case 'B': - handler.on_full_month(); - break; - // Hour, minute, second: - case 'H': - handler.on_24_hour(numeric_system::standard); - break; - case 'I': - handler.on_12_hour(numeric_system::standard); - break; - case 'M': - handler.on_minute(numeric_system::standard); - break; - case 'S': - handler.on_second(numeric_system::standard); - break; - // Other: - case 'c': - handler.on_datetime(numeric_system::standard); - break; - case 'x': - handler.on_loc_date(numeric_system::standard); - break; - case 'X': - handler.on_loc_time(numeric_system::standard); - break; - case 'D': - handler.on_us_date(); - break; - case 'F': - handler.on_iso_date(); - break; - case 'r': - handler.on_12_hour_time(); - break; - case 'R': - handler.on_24_hour_time(); - break; - case 'T': - handler.on_iso_time(); - break; - case 'p': - handler.on_am_pm(); - break; - case 'Q': - handler.on_duration_value(); - break; - case 'q': - handler.on_duration_unit(); - break; - case 'z': - handler.on_utc_offset(); - break; - case 'Z': - handler.on_tz_name(); - break; - // Alternative representation: - case 'E': { - if (ptr == end) FMT_THROW(format_error("invalid format")); - c = *ptr++; - switch (c) { - case 'c': - handler.on_datetime(numeric_system::alternative); - break; - case 'x': - handler.on_loc_date(numeric_system::alternative); - break; - case 'X': - handler.on_loc_time(numeric_system::alternative); - break; - default: - FMT_THROW(format_error("invalid format")); - } - break; - } - case 'O': - if (ptr == end) FMT_THROW(format_error("invalid format")); - c = *ptr++; - switch (c) { - case 'w': - handler.on_dec0_weekday(numeric_system::alternative); - break; - case 'u': - handler.on_dec1_weekday(numeric_system::alternative); - break; - case 'H': - handler.on_24_hour(numeric_system::alternative); - break; - case 'I': - handler.on_12_hour(numeric_system::alternative); - break; - case 'M': - handler.on_minute(numeric_system::alternative); - break; - case 'S': - handler.on_second(numeric_system::alternative); - break; - default: - FMT_THROW(format_error("invalid format")); - } - break; - default: - FMT_THROW(format_error("invalid format")); - } - begin = ptr; - } - if (begin != ptr) handler.on_text(begin, ptr); - return ptr; -} - -struct chrono_format_checker { - FMT_NORETURN void report_no_date() { FMT_THROW(format_error("no date")); } - - template <typename Char> void on_text(const Char*, const Char*) {} - FMT_NORETURN void on_abbr_weekday() { report_no_date(); } - FMT_NORETURN void on_full_weekday() { report_no_date(); } - FMT_NORETURN void on_dec0_weekday(numeric_system) { report_no_date(); } - FMT_NORETURN void on_dec1_weekday(numeric_system) { report_no_date(); } - FMT_NORETURN void on_abbr_month() { report_no_date(); } - FMT_NORETURN void on_full_month() { report_no_date(); } - void on_24_hour(numeric_system) {} - void on_12_hour(numeric_system) {} - void on_minute(numeric_system) {} - void on_second(numeric_system) {} - FMT_NORETURN void on_datetime(numeric_system) { report_no_date(); } - FMT_NORETURN void on_loc_date(numeric_system) { report_no_date(); } - FMT_NORETURN void on_loc_time(numeric_system) { report_no_date(); } - FMT_NORETURN void on_us_date() { report_no_date(); } - FMT_NORETURN void on_iso_date() { report_no_date(); } - void on_12_hour_time() {} - void on_24_hour_time() {} - void on_iso_time() {} - void on_am_pm() {} - void on_duration_value() {} - void on_duration_unit() {} - FMT_NORETURN void on_utc_offset() { report_no_date(); } - FMT_NORETURN void on_tz_name() { report_no_date(); } -}; - -template <typename T, FMT_ENABLE_IF(std::is_integral<T>::value)> -inline bool isnan(T) { - return false; -} -template <typename T, FMT_ENABLE_IF(std::is_floating_point<T>::value)> -inline bool isnan(T value) { - return std::isnan(value); -} - -template <typename T, FMT_ENABLE_IF(std::is_integral<T>::value)> -inline bool isfinite(T) { - return true; -} -template <typename T, FMT_ENABLE_IF(std::is_floating_point<T>::value)> -inline bool isfinite(T value) { - return std::isfinite(value); -} - -// Converts value to int and checks that it's in the range [0, upper). -template <typename T, FMT_ENABLE_IF(std::is_integral<T>::value)> -inline int to_nonnegative_int(T value, int upper) { - FMT_ASSERT(value >= 0 && value <= upper, "invalid value"); - (void)upper; - return static_cast<int>(value); -} -template <typename T, FMT_ENABLE_IF(!std::is_integral<T>::value)> -inline int to_nonnegative_int(T value, int upper) { - FMT_ASSERT( - std::isnan(value) || (value >= 0 && value <= static_cast<T>(upper)), - "invalid value"); - (void)upper; - return static_cast<int>(value); -} - -template <typename T, FMT_ENABLE_IF(std::is_integral<T>::value)> -inline T mod(T x, int y) { - return x % static_cast<T>(y); -} -template <typename T, FMT_ENABLE_IF(std::is_floating_point<T>::value)> -inline T mod(T x, int y) { - return std::fmod(x, static_cast<T>(y)); -} - -// If T is an integral type, maps T to its unsigned counterpart, otherwise -// leaves it unchanged (unlike std::make_unsigned). -template <typename T, bool INTEGRAL = std::is_integral<T>::value> -struct make_unsigned_or_unchanged { - using type = T; -}; - -template <typename T> struct make_unsigned_or_unchanged<T, true> { - using type = typename std::make_unsigned<T>::type; -}; - -#if FMT_SAFE_DURATION_CAST -// throwing version of safe_duration_cast -template <typename To, typename FromRep, typename FromPeriod> -To fmt_safe_duration_cast(std::chrono::duration<FromRep, FromPeriod> from) { - int ec; - To to = safe_duration_cast::safe_duration_cast<To>(from, ec); - if (ec) FMT_THROW(format_error("cannot format duration")); - return to; -} -#endif - -template <typename Rep, typename Period, - FMT_ENABLE_IF(std::is_integral<Rep>::value)> -inline std::chrono::duration<Rep, std::milli> get_milliseconds( - std::chrono::duration<Rep, Period> d) { - // this may overflow and/or the result may not fit in the - // target type. -#if FMT_SAFE_DURATION_CAST - using CommonSecondsType = - typename std::common_type<decltype(d), std::chrono::seconds>::type; - const auto d_as_common = fmt_safe_duration_cast<CommonSecondsType>(d); - const auto d_as_whole_seconds = - fmt_safe_duration_cast<std::chrono::seconds>(d_as_common); - // this conversion should be nonproblematic - const auto diff = d_as_common - d_as_whole_seconds; - const auto ms = - fmt_safe_duration_cast<std::chrono::duration<Rep, std::milli>>(diff); - return ms; -#else - auto s = std::chrono::duration_cast<std::chrono::seconds>(d); - return std::chrono::duration_cast<std::chrono::milliseconds>(d - s); -#endif -} - -template <typename Rep, typename Period, - FMT_ENABLE_IF(std::is_floating_point<Rep>::value)> -inline std::chrono::duration<Rep, std::milli> get_milliseconds( - std::chrono::duration<Rep, Period> d) { - using common_type = typename std::common_type<Rep, std::intmax_t>::type; - auto ms = mod(d.count() * static_cast<common_type>(Period::num) / - static_cast<common_type>(Period::den) * 1000, - 1000); - return std::chrono::duration<Rep, std::milli>(static_cast<Rep>(ms)); -} - -template <typename Char, typename Rep, typename OutputIt> -OutputIt format_duration_value(OutputIt out, Rep val, int precision) { - const Char pr_f[] = {'{', ':', '.', '{', '}', 'f', '}', 0}; - if (precision >= 0) return format_to(out, pr_f, val, precision); - const Char fp_f[] = {'{', ':', 'g', '}', 0}; - const Char format[] = {'{', '}', 0}; - return format_to(out, std::is_floating_point<Rep>::value ? fp_f : format, - val); -} -template <typename Char, typename OutputIt> -OutputIt copy_unit(string_view unit, OutputIt out, Char) { - return std::copy(unit.begin(), unit.end(), out); -} - -template <typename OutputIt> -OutputIt copy_unit(string_view unit, OutputIt out, wchar_t) { - // This works when wchar_t is UTF-32 because units only contain characters - // that have the same representation in UTF-16 and UTF-32. - utf8_to_utf16 u(unit); - return std::copy(u.c_str(), u.c_str() + u.size(), out); -} - -template <typename Char, typename Period, typename OutputIt> -OutputIt format_duration_unit(OutputIt out) { - if (const char* unit = get_units<Period>()) - return copy_unit(string_view(unit), out, Char()); - const Char num_f[] = {'[', '{', '}', ']', 's', 0}; - if (const_check(Period::den == 1)) return format_to(out, num_f, Period::num); - const Char num_def_f[] = {'[', '{', '}', '/', '{', '}', ']', 's', 0}; - return format_to(out, num_def_f, Period::num, Period::den); -} - -template <typename FormatContext, typename OutputIt, typename Rep, - typename Period> -struct chrono_formatter { - FormatContext& context; - OutputIt out; - int precision; - // rep is unsigned to avoid overflow. - using rep = - conditional_t<std::is_integral<Rep>::value && sizeof(Rep) < sizeof(int), - unsigned, typename make_unsigned_or_unchanged<Rep>::type>; - rep val; - using seconds = std::chrono::duration<rep>; - seconds s; - using milliseconds = std::chrono::duration<rep, std::milli>; - bool negative; - - using char_type = typename FormatContext::char_type; - - explicit chrono_formatter(FormatContext& ctx, OutputIt o, - std::chrono::duration<Rep, Period> d) - : context(ctx), - out(o), - val(static_cast<rep>(d.count())), - negative(false) { - if (d.count() < 0) { - val = 0 - val; - negative = true; - } - - // this may overflow and/or the result may not fit in the - // target type. -#if FMT_SAFE_DURATION_CAST - // might need checked conversion (rep!=Rep) - auto tmpval = std::chrono::duration<rep, Period>(val); - s = fmt_safe_duration_cast<seconds>(tmpval); -#else - s = std::chrono::duration_cast<seconds>( - std::chrono::duration<rep, Period>(val)); -#endif - } - - // returns true if nan or inf, writes to out. - bool handle_nan_inf() { - if (isfinite(val)) { - return false; - } - if (isnan(val)) { - write_nan(); - return true; - } - // must be +-inf - if (val > 0) { - write_pinf(); - } else { - write_ninf(); - } - return true; - } - - Rep hour() const { return static_cast<Rep>(mod((s.count() / 3600), 24)); } - - Rep hour12() const { - Rep hour = static_cast<Rep>(mod((s.count() / 3600), 12)); - return hour <= 0 ? 12 : hour; - } - - Rep minute() const { return static_cast<Rep>(mod((s.count() / 60), 60)); } - Rep second() const { return static_cast<Rep>(mod(s.count(), 60)); } - - std::tm time() const { - auto time = std::tm(); - time.tm_hour = to_nonnegative_int(hour(), 24); - time.tm_min = to_nonnegative_int(minute(), 60); - time.tm_sec = to_nonnegative_int(second(), 60); - return time; - } - - void write_sign() { - if (negative) { - *out++ = '-'; - negative = false; - } - } - - void write(Rep value, int width) { - write_sign(); - if (isnan(value)) return write_nan(); - uint32_or_64_or_128_t<int> n = - to_unsigned(to_nonnegative_int(value, max_value<int>())); - int num_digits = detail::count_digits(n); - if (width > num_digits) out = std::fill_n(out, width - num_digits, '0'); - out = format_decimal<char_type>(out, n, num_digits).end; - } - - void write_nan() { std::copy_n("nan", 3, out); } - void write_pinf() { std::copy_n("inf", 3, out); } - void write_ninf() { std::copy_n("-inf", 4, out); } - - void format_localized(const tm& time, char format, char modifier = 0) { - if (isnan(val)) return write_nan(); - auto locale = context.locale().template get<std::locale>(); - auto& facet = std::use_facet<std::time_put<char_type>>(locale); - std::basic_ostringstream<char_type> os; - os.imbue(locale); - facet.put(os, os, ' ', &time, format, modifier); - auto str = os.str(); - std::copy(str.begin(), str.end(), out); - } - - void on_text(const char_type* begin, const char_type* end) { - std::copy(begin, end, out); - } - - // These are not implemented because durations don't have date information. - void on_abbr_weekday() {} - void on_full_weekday() {} - void on_dec0_weekday(numeric_system) {} - void on_dec1_weekday(numeric_system) {} - void on_abbr_month() {} - void on_full_month() {} - void on_datetime(numeric_system) {} - void on_loc_date(numeric_system) {} - void on_loc_time(numeric_system) {} - void on_us_date() {} - void on_iso_date() {} - void on_utc_offset() {} - void on_tz_name() {} - - void on_24_hour(numeric_system ns) { - if (handle_nan_inf()) return; - - if (ns == numeric_system::standard) return write(hour(), 2); - auto time = tm(); - time.tm_hour = to_nonnegative_int(hour(), 24); - format_localized(time, 'H', 'O'); - } - - void on_12_hour(numeric_system ns) { - if (handle_nan_inf()) return; - - if (ns == numeric_system::standard) return write(hour12(), 2); - auto time = tm(); - time.tm_hour = to_nonnegative_int(hour12(), 12); - format_localized(time, 'I', 'O'); - } - - void on_minute(numeric_system ns) { - if (handle_nan_inf()) return; - - if (ns == numeric_system::standard) return write(minute(), 2); - auto time = tm(); - time.tm_min = to_nonnegative_int(minute(), 60); - format_localized(time, 'M', 'O'); - } - - void on_second(numeric_system ns) { - if (handle_nan_inf()) return; - - if (ns == numeric_system::standard) { - write(second(), 2); -#if FMT_SAFE_DURATION_CAST - // convert rep->Rep - using duration_rep = std::chrono::duration<rep, Period>; - using duration_Rep = std::chrono::duration<Rep, Period>; - auto tmpval = fmt_safe_duration_cast<duration_Rep>(duration_rep{val}); -#else - auto tmpval = std::chrono::duration<Rep, Period>(val); -#endif - auto ms = get_milliseconds(tmpval); - if (ms != std::chrono::milliseconds(0)) { - *out++ = '.'; - write(ms.count(), 3); - } - return; - } - auto time = tm(); - time.tm_sec = to_nonnegative_int(second(), 60); - format_localized(time, 'S', 'O'); - } - - void on_12_hour_time() { - if (handle_nan_inf()) return; - format_localized(time(), 'r'); - } - - void on_24_hour_time() { - if (handle_nan_inf()) { - *out++ = ':'; - handle_nan_inf(); - return; - } - - write(hour(), 2); - *out++ = ':'; - write(minute(), 2); - } - - void on_iso_time() { - on_24_hour_time(); - *out++ = ':'; - if (handle_nan_inf()) return; - write(second(), 2); - } - - void on_am_pm() { - if (handle_nan_inf()) return; - format_localized(time(), 'p'); - } - - void on_duration_value() { - if (handle_nan_inf()) return; - write_sign(); - out = format_duration_value<char_type>(out, val, precision); - } - - void on_duration_unit() { - out = format_duration_unit<char_type, Period>(out); - } -}; -} // namespace detail - -template <typename Rep, typename Period, typename Char> -struct formatter<std::chrono::duration<Rep, Period>, Char> { - private: - basic_format_specs<Char> specs; - int precision; - using arg_ref_type = detail::arg_ref<Char>; - arg_ref_type width_ref; - arg_ref_type precision_ref; - mutable basic_string_view<Char> format_str; - using duration = std::chrono::duration<Rep, Period>; - - struct spec_handler { - formatter& f; - basic_format_parse_context<Char>& context; - basic_string_view<Char> format_str; - - template <typename Id> FMT_CONSTEXPR arg_ref_type make_arg_ref(Id arg_id) { - context.check_arg_id(arg_id); - return arg_ref_type(arg_id); - } - - FMT_CONSTEXPR arg_ref_type make_arg_ref(basic_string_view<Char> arg_id) { - context.check_arg_id(arg_id); - return arg_ref_type(arg_id); - } - - FMT_CONSTEXPR arg_ref_type make_arg_ref(detail::auto_id) { - return arg_ref_type(context.next_arg_id()); - } - - void on_error(const char* msg) { FMT_THROW(format_error(msg)); } - void on_fill(basic_string_view<Char> fill) { f.specs.fill = fill; } - void on_align(align_t align) { f.specs.align = align; } - void on_width(int width) { f.specs.width = width; } - void on_precision(int _precision) { f.precision = _precision; } - void end_precision() {} - - template <typename Id> void on_dynamic_width(Id arg_id) { - f.width_ref = make_arg_ref(arg_id); - } - - template <typename Id> void on_dynamic_precision(Id arg_id) { - f.precision_ref = make_arg_ref(arg_id); - } - }; - - using iterator = typename basic_format_parse_context<Char>::iterator; - struct parse_range { - iterator begin; - iterator end; - }; - - FMT_CONSTEXPR parse_range do_parse(basic_format_parse_context<Char>& ctx) { - auto begin = ctx.begin(), end = ctx.end(); - if (begin == end || *begin == '}') return {begin, begin}; - spec_handler handler{*this, ctx, format_str}; - begin = detail::parse_align(begin, end, handler); - if (begin == end) return {begin, begin}; - begin = detail::parse_width(begin, end, handler); - if (begin == end) return {begin, begin}; - if (*begin == '.') { - if (std::is_floating_point<Rep>::value) - begin = detail::parse_precision(begin, end, handler); - else - handler.on_error("precision not allowed for this argument type"); - } - end = parse_chrono_format(begin, end, detail::chrono_format_checker()); - return {begin, end}; - } - - public: - formatter() : precision(-1) {} - - FMT_CONSTEXPR auto parse(basic_format_parse_context<Char>& ctx) - -> decltype(ctx.begin()) { - auto range = do_parse(ctx); - format_str = basic_string_view<Char>( - &*range.begin, detail::to_unsigned(range.end - range.begin)); - return range.end; - } - - template <typename FormatContext> - auto format(const duration& d, FormatContext& ctx) -> decltype(ctx.out()) { - auto begin = format_str.begin(), end = format_str.end(); - // As a possible future optimization, we could avoid extra copying if width - // is not specified. - basic_memory_buffer<Char> buf; - auto out = std::back_inserter(buf); - detail::handle_dynamic_spec<detail::width_checker>(specs.width, width_ref, - ctx); - detail::handle_dynamic_spec<detail::precision_checker>(precision, - precision_ref, ctx); - if (begin == end || *begin == '}') { - out = detail::format_duration_value<Char>(out, d.count(), precision); - detail::format_duration_unit<Char, Period>(out); - } else { - detail::chrono_formatter<FormatContext, decltype(out), Rep, Period> f( - ctx, out, d); - f.precision = precision; - parse_chrono_format(begin, end, f); - } - return detail::write( - ctx.out(), basic_string_view<Char>(buf.data(), buf.size()), specs); - } -}; - -FMT_END_NAMESPACE - -#endif // FMT_CHRONO_H_ |