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util-linux/include/timeutils.h

87 lines
2.8 KiB

/***
First set of functions in this file are part of systemd, and were
copied to util-linux at August 2013.
Copyright 2010 Lennart Poettering
Copyright (C) 2014 Karel Zak <kzak@redhat.com>
systemd 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.
systemd 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 systemd; If not, see <http://www.gnu.org/licenses/>.
***/
#ifndef UTIL_LINUX_TIME_UTIL_H
#define UTIL_LINUX_TIME_UTIL_H
#include <stdio.h>
#include <inttypes.h>
#include <sys/time.h>
typedef uint64_t usec_t;
typedef uint64_t nsec_t;
#define MSEC_PER_SEC 1000ULL
#define USEC_PER_SEC 1000000ULL
#define USEC_PER_MSEC 1000ULL
#define NSEC_PER_SEC 1000000000ULL
#define NSEC_PER_MSEC 1000000ULL
#define NSEC_PER_USEC 1000ULL
#define USEC_PER_MINUTE (60ULL*USEC_PER_SEC)
#define NSEC_PER_MINUTE (60ULL*NSEC_PER_SEC)
#define USEC_PER_HOUR (60ULL*USEC_PER_MINUTE)
#define NSEC_PER_HOUR (60ULL*NSEC_PER_MINUTE)
#define USEC_PER_DAY (24ULL*USEC_PER_HOUR)
#define NSEC_PER_DAY (24ULL*NSEC_PER_HOUR)
#define USEC_PER_WEEK (7ULL*USEC_PER_DAY)
#define NSEC_PER_WEEK (7ULL*NSEC_PER_DAY)
#define USEC_PER_MONTH (2629800ULL*USEC_PER_SEC)
#define NSEC_PER_MONTH (2629800ULL*NSEC_PER_SEC)
#define USEC_PER_YEAR (31557600ULL*USEC_PER_SEC)
#define NSEC_PER_YEAR (31557600ULL*NSEC_PER_SEC)
#define FORMAT_TIMESTAMP_MAX ((4*4+1)+11+9+4+1) /* weekdays can be unicode */
#define FORMAT_TIMESTAMP_RELATIVE_MAX 256
#define FORMAT_TIMESPAN_MAX 64
int parse_timestamp(const char *t, usec_t *usec);
/* flags for strxxx_iso() functions */
enum {
ISO_8601_DATE = (1 << 1),
ISO_8601_TIME = (1 << 2),
ISO_8601_DOTUSEC = (1 << 3),
ISO_8601_COMMAUSEC = (1 << 4),
ISO_8601_TIMEZONE = (1 << 5),
ISO_8601_SPACE = (1 << 6),
ISO_8601_GMTIME = (1 << 7)
};
#define ISO_8601_BUFSIZ 32
int strtimeval_iso(struct timeval *tv, int flags, char *buf, size_t bufsz);
int strtm_iso(struct tm *tm, int flags, char *buf, size_t bufsz);
int strtime_iso(const time_t *t, int flags, char *buf, size_t bufsz);
#define UL_SHORTTIME_THISYEAR_HHMM (1 << 1)
int time_is_today(const time_t *t, struct timeval *now);
int time_is_thisyear(const time_t *t, struct timeval *now);
int strtime_short(const time_t *t, struct timeval *now, int flags, char *buf, size_t bufsz);
#ifndef HAVE_TIMEGM
extern time_t timegm(struct tm *tm);
#endif
int parse_date(struct timespec *, char const *, struct timespec const *);
#endif /* UTIL_LINUX_TIME_UTIL_H */