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+/* A more-standard <time.h>.
+
+ Copyright (C) 2007-2023 Free Software Foundation, Inc.
+
+ This file is free software: you can redistribute it and/or modify
+ it under the terms of the GNU Lesser General Public License as
+ published by the Free Software Foundation; either version 2.1 of the
+ License, or (at your option) any later version.
+
+ This file is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with this program. If not, see <https://www.gnu.org/licenses/>. */
+
+#if __GNUC__ >= 3
+@PRAGMA_SYSTEM_HEADER@
+#endif
+@PRAGMA_COLUMNS@
+
+/* This file uses #include_next of a system file that defines time_t.
+ For the 'year2038' module to work right, <config.h> needs to have been
+ included before. */
+#if !_GL_CONFIG_H_INCLUDED
+ #error "Please include config.h first."
+#endif
+
+/* Don't get in the way of glibc when it includes time.h merely to
+ declare a few standard symbols, rather than to declare all the
+ symbols. (However, skip this for MinGW as it treats __need_time_t
+ incompatibly.) Also, Solaris 8 <time.h> eventually includes itself
+ recursively; if that is happening, just include the system <time.h>
+ without adding our own declarations. */
+#if (((defined __need_time_t || defined __need_clock_t \
+ || defined __need_timespec) \
+ && !defined __MINGW32__) \
+ || defined _@GUARD_PREFIX@_TIME_H)
+
+# @INCLUDE_NEXT@ @NEXT_TIME_H@
+
+#else
+
+# define _@GUARD_PREFIX@_TIME_H
+
+/* mingw's <time.h> provides the functions asctime_r, ctime_r, gmtime_r,
+ localtime_r only if <unistd.h> or <pthread.h> has been included before. */
+# if defined __MINGW32__
+# include <unistd.h>
+# endif
+
+# @INCLUDE_NEXT@ @NEXT_TIME_H@
+
+/* This file uses _GL_ATTRIBUTE_DEPRECATED, GNULIB_POSIXCHECK,
+ HAVE_RAW_DECL_*. */
+# if !_GL_CONFIG_H_INCLUDED
+# error "Please include config.h first."
+# endif
+
+/* NetBSD 5.0 mis-defines NULL. */
+# include <stddef.h>
+
+/* The definitions of _GL_FUNCDECL_RPL etc. are copied here. */
+
+/* The definition of _GL_ARG_NONNULL is copied here. */
+
+/* The definition of _GL_WARN_ON_USE is copied here. */
+
+/* Some systems don't define struct timespec (e.g., AIX 4.1).
+ Or they define it with the wrong member names or define it in <sys/time.h>
+ (e.g., FreeBSD circa 1997). Stock Mingw prior to 3.0 does not define it,
+ but the pthreads-win32 library defines it in <pthread.h>. */
+# if ! @TIME_H_DEFINES_STRUCT_TIMESPEC@
+# if @SYS_TIME_H_DEFINES_STRUCT_TIMESPEC@
+# include <sys/time.h>
+# elif @PTHREAD_H_DEFINES_STRUCT_TIMESPEC@
+# include <pthread.h>
+# elif @UNISTD_H_DEFINES_STRUCT_TIMESPEC@
+# include <unistd.h>
+# else
+
+# ifdef __cplusplus
+extern "C" {
+# endif
+
+# if !GNULIB_defined_struct_timespec
+# undef timespec
+# define timespec rpl_timespec
+struct timespec
+{
+ time_t tv_sec;
+ long int tv_nsec;
+};
+# define GNULIB_defined_struct_timespec 1
+# endif
+
+# ifdef __cplusplus
+}
+# endif
+
+# endif
+# endif
+
+# if !GNULIB_defined_struct_time_t_must_be_integral
+/* https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/sys_types.h.html
+ requires time_t to be an integer type, even though C99 permits floating
+ point. We don't know of any implementation that uses floating
+ point, and it is much easier to write code that doesn't have to
+ worry about that corner case, so we force the issue. */
+struct __time_t_must_be_integral {
+ unsigned int __floating_time_t_unsupported : (time_t) 1;
+};
+# define GNULIB_defined_struct_time_t_must_be_integral 1
+# endif
+
+/* Define TIME_UTC, a positive integer constant used for timespec_get(). */
+# if ! @TIME_H_DEFINES_TIME_UTC@
+# if !GNULIB_defined_TIME_UTC
+# define TIME_UTC 1
+# define GNULIB_defined_TIME_UTC 1
+# endif
+# endif
+
+/* Set *TS to the current time, and return BASE.
+ Upon failure, return 0. */
+# if @GNULIB_TIMESPEC_GET@
+# if @REPLACE_TIMESPEC_GET@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef timespec_get
+# define timespec_get rpl_timespec_get
+# endif
+_GL_FUNCDECL_RPL (timespec_get, int, (struct timespec *ts, int base)
+ _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (timespec_get, int, (struct timespec *ts, int base));
+# else
+# if !@HAVE_TIMESPEC_GET@
+_GL_FUNCDECL_SYS (timespec_get, int, (struct timespec *ts, int base)
+ _GL_ARG_NONNULL ((1)));
+# endif
+_GL_CXXALIAS_SYS (timespec_get, int, (struct timespec *ts, int base));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (timespec_get);
+# endif
+# endif
+
+/* Set *TS to the current time resolution, and return BASE.
+ Upon failure, return 0. */
+# if @GNULIB_TIMESPEC_GETRES@
+# if ! @HAVE_TIMESPEC_GETRES@
+_GL_FUNCDECL_SYS (timespec_getres, int, (struct timespec *ts, int base)
+ _GL_ARG_NONNULL ((1)));
+# endif
+_GL_CXXALIAS_SYS (timespec_getres, int, (struct timespec *ts, int base));
+_GL_CXXALIASWARN (timespec_getres);
+# endif
+
+/* Return the number of seconds that have elapsed since the Epoch. */
+# if @GNULIB_TIME@
+# if @REPLACE_TIME@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# define time rpl_time
+# endif
+_GL_FUNCDECL_RPL (time, time_t, (time_t *__tp));
+_GL_CXXALIAS_RPL (time, time_t, (time_t *__tp));
+# else
+_GL_CXXALIAS_SYS (time, time_t, (time_t *__tp));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (time);
+# endif
+# endif
+
+/* Sleep for at least RQTP seconds unless interrupted, If interrupted,
+ return -1 and store the remaining time into RMTP. See
+ <https://pubs.opengroup.org/onlinepubs/9699919799/functions/nanosleep.html>. */
+# if @GNULIB_NANOSLEEP@
+# if @REPLACE_NANOSLEEP@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# define nanosleep rpl_nanosleep
+# endif
+_GL_FUNCDECL_RPL (nanosleep, int,
+ (struct timespec const *__rqtp, struct timespec *__rmtp)
+ _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (nanosleep, int,
+ (struct timespec const *__rqtp, struct timespec *__rmtp));
+# else
+# if ! @HAVE_NANOSLEEP@
+_GL_FUNCDECL_SYS (nanosleep, int,
+ (struct timespec const *__rqtp, struct timespec *__rmtp)
+ _GL_ARG_NONNULL ((1)));
+# endif
+_GL_CXXALIAS_SYS (nanosleep, int,
+ (struct timespec const *__rqtp, struct timespec *__rmtp));
+# endif
+_GL_CXXALIASWARN (nanosleep);
+# endif
+
+/* Initialize time conversion information. */
+# if @GNULIB_TZSET@
+# if @REPLACE_TZSET@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef tzset
+# define tzset rpl_tzset
+# endif
+_GL_FUNCDECL_RPL (tzset, void, (void));
+_GL_CXXALIAS_RPL (tzset, void, (void));
+# elif defined _WIN32 && !defined __CYGWIN__
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef tzset
+# define tzset _tzset
+# endif
+_GL_CXXALIAS_MDA (tzset, void, (void));
+# else
+_GL_CXXALIAS_SYS (tzset, void, (void));
+# endif
+_GL_CXXALIASWARN (tzset);
+# elif @GNULIB_MDA_TZSET@
+/* On native Windows, map 'tzset' to '_tzset', so that -loldnames is not
+ required. In C++ with GNULIB_NAMESPACE, avoid differences between
+ platforms by defining GNULIB_NAMESPACE::tzset always. */
+# if defined _WIN32 && !defined __CYGWIN__
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef tzset
+# define tzset _tzset
+# endif
+_GL_CXXALIAS_MDA (tzset, void, (void));
+# else
+_GL_CXXALIAS_SYS (tzset, void, (void));
+# endif
+_GL_CXXALIASWARN (tzset);
+# endif
+
+/* Return the 'time_t' representation of TP and normalize TP. */
+# if @GNULIB_MKTIME@
+# if @REPLACE_MKTIME@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# define mktime rpl_mktime
+# endif
+_GL_FUNCDECL_RPL (mktime, time_t, (struct tm *__tp) _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (mktime, time_t, (struct tm *__tp));
+# else
+_GL_CXXALIAS_SYS (mktime, time_t, (struct tm *__tp));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (mktime);
+# endif
+# endif
+
+/* Convert TIMER to RESULT, assuming local time and UTC respectively. See
+ <https://pubs.opengroup.org/onlinepubs/9699919799/functions/localtime_r.html> and
+ <https://pubs.opengroup.org/onlinepubs/9699919799/functions/gmtime_r.html>. */
+# if @GNULIB_TIME_R@
+# if @REPLACE_LOCALTIME_R@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef localtime_r
+# define localtime_r rpl_localtime_r
+# endif
+_GL_FUNCDECL_RPL (localtime_r, struct tm *, (time_t const *restrict __timer,
+ struct tm *restrict __result)
+ _GL_ARG_NONNULL ((1, 2)));
+_GL_CXXALIAS_RPL (localtime_r, struct tm *, (time_t const *restrict __timer,
+ struct tm *restrict __result));
+# else
+# if ! @HAVE_DECL_LOCALTIME_R@
+_GL_FUNCDECL_SYS (localtime_r, struct tm *, (time_t const *restrict __timer,
+ struct tm *restrict __result)
+ _GL_ARG_NONNULL ((1, 2)));
+# endif
+_GL_CXXALIAS_SYS (localtime_r, struct tm *, (time_t const *restrict __timer,
+ struct tm *restrict __result));
+# endif
+# if @HAVE_DECL_LOCALTIME_R@
+_GL_CXXALIASWARN (localtime_r);
+# endif
+# if @REPLACE_LOCALTIME_R@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef gmtime_r
+# define gmtime_r rpl_gmtime_r
+# endif
+_GL_FUNCDECL_RPL (gmtime_r, struct tm *, (time_t const *restrict __timer,
+ struct tm *restrict __result)
+ _GL_ARG_NONNULL ((1, 2)));
+_GL_CXXALIAS_RPL (gmtime_r, struct tm *, (time_t const *restrict __timer,
+ struct tm *restrict __result));
+# else
+# if ! @HAVE_DECL_LOCALTIME_R@
+_GL_FUNCDECL_SYS (gmtime_r, struct tm *, (time_t const *restrict __timer,
+ struct tm *restrict __result)
+ _GL_ARG_NONNULL ((1, 2)));
+# endif
+_GL_CXXALIAS_SYS (gmtime_r, struct tm *, (time_t const *restrict __timer,
+ struct tm *restrict __result));
+# endif
+# if @HAVE_DECL_LOCALTIME_R@
+_GL_CXXALIASWARN (gmtime_r);
+# endif
+# endif
+
+/* Convert TIMER to RESULT, assuming local time and UTC respectively. See
+ <https://pubs.opengroup.org/onlinepubs/9699919799/functions/localtime.html> and
+ <https://pubs.opengroup.org/onlinepubs/9699919799/functions/gmtime.html>. */
+# if @GNULIB_LOCALTIME@ || @REPLACE_LOCALTIME@
+# if @REPLACE_LOCALTIME@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef localtime
+# define localtime rpl_localtime
+# endif
+_GL_FUNCDECL_RPL (localtime, struct tm *, (time_t const *__timer)
+ _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (localtime, struct tm *, (time_t const *__timer));
+# else
+_GL_CXXALIAS_SYS (localtime, struct tm *, (time_t const *__timer));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (localtime);
+# endif
+# endif
+
+# if 0 || @REPLACE_GMTIME@
+# if @REPLACE_GMTIME@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef gmtime
+# define gmtime rpl_gmtime
+# endif
+_GL_FUNCDECL_RPL (gmtime, struct tm *, (time_t const *__timer)
+ _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (gmtime, struct tm *, (time_t const *__timer));
+# else
+_GL_CXXALIAS_SYS (gmtime, struct tm *, (time_t const *__timer));
+# endif
+_GL_CXXALIASWARN (gmtime);
+# endif
+
+/* Parse BUF as a timestamp, assuming FORMAT specifies its layout, and store
+ the resulting broken-down time into TM. See
+ <https://pubs.opengroup.org/onlinepubs/9699919799/functions/strptime.html>. */
+# if @GNULIB_STRPTIME@
+# if ! @HAVE_STRPTIME@
+_GL_FUNCDECL_SYS (strptime, char *, (char const *restrict __buf,
+ char const *restrict __format,
+ struct tm *restrict __tm)
+ _GL_ARG_NONNULL ((1, 2, 3)));
+# endif
+_GL_CXXALIAS_SYS (strptime, char *, (char const *restrict __buf,
+ char const *restrict __format,
+ struct tm *restrict __tm));
+_GL_CXXALIASWARN (strptime);
+# endif
+
+/* Convert *TP to a date and time string. See
+ <https://pubs.opengroup.org/onlinepubs/9699919799/functions/ctime.html>. */
+# if @GNULIB_CTIME@
+# if @REPLACE_CTIME@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# define ctime rpl_ctime
+# endif
+# ifndef __cplusplus
+_GL_ATTRIBUTE_DEPRECATED
+# endif
+_GL_FUNCDECL_RPL (ctime, char *, (time_t const *__tp)
+ _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (ctime, char *, (time_t const *__tp));
+# else
+_GL_CXXALIAS_SYS (ctime, char *, (time_t const *__tp));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (ctime);
+# endif
+# endif
+
+/* Convert *TP to a date and time string. See
+ <https://pubs.opengroup.org/onlinepubs/9699919799/functions/strftime.html>. */
+# if @GNULIB_STRFTIME@
+# if @REPLACE_STRFTIME@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# define strftime rpl_strftime
+# endif
+_GL_FUNCDECL_RPL (strftime, size_t,
+ (char *restrict __buf, size_t __bufsize,
+ const char *restrict __fmt, const struct tm *restrict __tp)
+ _GL_ARG_NONNULL ((1, 3, 4)));
+_GL_CXXALIAS_RPL (strftime, size_t,
+ (char *restrict __buf, size_t __bufsize,
+ const char *restrict __fmt, const struct tm *restrict __tp));
+# else
+_GL_CXXALIAS_SYS (strftime, size_t,
+ (char *restrict __buf, size_t __bufsize,
+ const char *restrict __fmt, const struct tm *restrict __tp));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (strftime);
+# endif
+# endif
+
+# if defined _GNU_SOURCE && @GNULIB_TIME_RZ@ && ! @HAVE_TIMEZONE_T@
+/* Functions that use a first-class time zone data type, instead of
+ relying on an implicit global time zone.
+ Inspired by NetBSD. */
+
+/* Represents a time zone.
+ (timezone_t) NULL stands for UTC. */
+typedef struct tm_zone *timezone_t;
+
+/* tzalloc (name)
+ Returns a time zone object for the given time zone NAME. This object
+ represents the time zone that other functions would use it the TZ
+ environment variable was set to NAME.
+ If NAME is NULL, the result represents the time zone that other functions
+ would use it the TZ environment variable was unset.
+ May return NULL if NAME is invalid (this is platform dependent) or
+ upon memory allocation failure. */
+_GL_FUNCDECL_SYS (tzalloc, timezone_t, (char const *__name));
+_GL_CXXALIAS_SYS (tzalloc, timezone_t, (char const *__name));
+
+/* tzfree (tz)
+ Frees a time zone object.
+ The argument must have been returned by tzalloc(). */
+_GL_FUNCDECL_SYS (tzfree, void, (timezone_t __tz));
+_GL_CXXALIAS_SYS (tzfree, void, (timezone_t __tz));
+
+/* localtime_rz (tz, &t, &result)
+ Converts an absolute time T to a broken-down time RESULT, assuming the
+ time zone TZ.
+ This function is like 'localtime_r', but relies on the argument TZ instead
+ of an implicit global time zone. */
+_GL_FUNCDECL_SYS (localtime_rz, struct tm *,
+ (timezone_t __tz, time_t const *restrict __timer,
+ struct tm *restrict __result) _GL_ARG_NONNULL ((2, 3)));
+_GL_CXXALIAS_SYS (localtime_rz, struct tm *,
+ (timezone_t __tz, time_t const *restrict __timer,
+ struct tm *restrict __result));
+
+/* mktime_z (tz, &tm)
+ Normalizes the broken-down time TM and converts it to an absolute time,
+ assuming the time zone TZ. Returns the absolute time.
+ This function is like 'mktime', but relies on the argument TZ instead
+ of an implicit global time zone. */
+_GL_FUNCDECL_SYS (mktime_z, time_t,
+ (timezone_t __tz, struct tm *restrict __tm)
+ _GL_ARG_NONNULL ((2)));
+_GL_CXXALIAS_SYS (mktime_z, time_t,
+ (timezone_t __tz, struct tm *restrict __tm));
+
+/* Time zone abbreviation strings (returned by 'localtime_rz' or 'mktime_z'
+ in the 'tm_zone' member of 'struct tm') are valid as long as
+ - the 'struct tm' argument is not destroyed or overwritten,
+ and
+ - the 'timezone_t' argument is not freed through tzfree(). */
+
+# endif
+
+/* Convert TM to a time_t value, assuming UTC. */
+# if @GNULIB_TIMEGM@
+# if @REPLACE_TIMEGM@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef timegm
+# define timegm rpl_timegm
+# endif
+_GL_FUNCDECL_RPL (timegm, time_t, (struct tm *__tm) _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (timegm, time_t, (struct tm *__tm));
+# else
+# if ! @HAVE_TIMEGM@
+_GL_FUNCDECL_SYS (timegm, time_t, (struct tm *__tm) _GL_ARG_NONNULL ((1)));
+# endif
+_GL_CXXALIAS_SYS (timegm, time_t, (struct tm *__tm));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (timegm);
+# endif
+# endif
+
+/* Encourage applications to avoid unsafe functions that can overrun
+ buffers when given outlandish struct tm values. Portable
+ applications should use strftime (or even sprintf) instead. */
+# if defined GNULIB_POSIXCHECK
+# undef asctime
+_GL_WARN_ON_USE (asctime, "asctime can overrun buffers in some cases - "
+ "better use strftime (or even sprintf) instead");
+# endif
+# if defined GNULIB_POSIXCHECK
+# undef asctime_r
+# if HAVE_RAW_DECL_ASCTIME_R
+_GL_WARN_ON_USE (asctime_r, "asctime_r can overrun buffers in some cases - "
+ "better use strftime (or even sprintf) instead");
+# endif
+# endif
+# if defined GNULIB_POSIXCHECK
+# undef ctime
+_GL_WARN_ON_USE (ctime, "ctime can overrun buffers in some cases - "
+ "better use strftime (or even sprintf) instead");
+# endif
+# if defined GNULIB_POSIXCHECK
+# undef ctime_r
+# if HAVE_RAW_DECL_CTIME_R
+_GL_WARN_ON_USE (ctime_r, "ctime_r can overrun buffers in some cases - "
+ "better use strftime (or even sprintf) instead");
+# endif
+# endif
+
+#endif