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-rw-r--r--utils/lib/timeutils.c611
1 files changed, 0 insertions, 611 deletions
diff --git a/utils/lib/timeutils.c b/utils/lib/timeutils.c
deleted file mode 100644
index 8b443cd..0000000
--- a/utils/lib/timeutils.c
+++ /dev/null
@@ -1,611 +0,0 @@
-/***
- First set of functions in this file are part of systemd, and were
- copied to util-linux at August 2013.
-
- Copyright 2010 Lennart Poettering
-
- 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 util-linux; If not, see <http://www.gnu.org/licenses/>.
-***/
-
-#include <assert.h>
-#include <ctype.h>
-#include <stdlib.h>
-#include <string.h>
-#include <time.h>
-#include <sys/time.h>
-
-#include "c.h"
-#include "nls.h"
-#include "strutils.h"
-#include "timeutils.h"
-
-#define WHITESPACE " \t\n\r"
-
-#define streq(a,b) (strcmp((a),(b)) == 0)
-
-static int parse_sec(const char *t, usec_t *usec)
-{
- static const struct {
- const char *suffix;
- usec_t usec;
- } table[] = {
- { "seconds", USEC_PER_SEC },
- { "second", USEC_PER_SEC },
- { "sec", USEC_PER_SEC },
- { "s", USEC_PER_SEC },
- { "minutes", USEC_PER_MINUTE },
- { "minute", USEC_PER_MINUTE },
- { "min", USEC_PER_MINUTE },
- { "months", USEC_PER_MONTH },
- { "month", USEC_PER_MONTH },
- { "msec", USEC_PER_MSEC },
- { "ms", USEC_PER_MSEC },
- { "m", USEC_PER_MINUTE },
- { "hours", USEC_PER_HOUR },
- { "hour", USEC_PER_HOUR },
- { "hr", USEC_PER_HOUR },
- { "h", USEC_PER_HOUR },
- { "days", USEC_PER_DAY },
- { "day", USEC_PER_DAY },
- { "d", USEC_PER_DAY },
- { "weeks", USEC_PER_WEEK },
- { "week", USEC_PER_WEEK },
- { "w", USEC_PER_WEEK },
- { "years", USEC_PER_YEAR },
- { "year", USEC_PER_YEAR },
- { "y", USEC_PER_YEAR },
- { "usec", 1ULL },
- { "us", 1ULL },
- { "", USEC_PER_SEC }, /* default is sec */
- };
-
- const char *p;
- usec_t r = 0;
- int something = FALSE;
-
- assert(t);
- assert(usec);
-
- p = t;
- for (;;) {
- long long l, z = 0;
- char *e;
- unsigned i, n = 0;
-
- p += strspn(p, WHITESPACE);
-
- if (*p == 0) {
- if (!something)
- return -EINVAL;
-
- break;
- }
-
- errno = 0;
- l = strtoll(p, &e, 10);
-
- if (errno > 0)
- return -errno;
-
- if (l < 0)
- return -ERANGE;
-
- if (*e == '.') {
- char *b = e + 1;
-
- errno = 0;
- z = strtoll(b, &e, 10);
- if (errno > 0)
- return -errno;
-
- if (z < 0)
- return -ERANGE;
-
- if (e == b)
- return -EINVAL;
-
- n = e - b;
-
- } else if (e == p)
- return -EINVAL;
-
- e += strspn(e, WHITESPACE);
-
- for (i = 0; i < ARRAY_SIZE(table); i++)
- if (startswith(e, table[i].suffix)) {
- usec_t k = (usec_t) z * table[i].usec;
-
- for (; n > 0; n--)
- k /= 10;
-
- r += (usec_t) l *table[i].usec + k;
- p = e + strlen(table[i].suffix);
-
- something = TRUE;
- break;
- }
-
- if (i >= ARRAY_SIZE(table))
- return -EINVAL;
-
- }
-
- *usec = r;
-
- return 0;
-}
-
-int parse_timestamp(const char *t, usec_t *usec)
-{
- static const struct {
- const char *name;
- const int nr;
- } day_nr[] = {
- { "Sunday", 0 },
- { "Sun", 0 },
- { "Monday", 1 },
- { "Mon", 1 },
- { "Tuesday", 2 },
- { "Tue", 2 },
- { "Wednesday", 3 },
- { "Wed", 3 },
- { "Thursday", 4 },
- { "Thu", 4 },
- { "Friday", 5 },
- { "Fri", 5 },
- { "Saturday", 6 },
- { "Sat", 6 },
- };
-
- const char *k;
- struct tm tm, copy;
- time_t x;
- usec_t plus = 0, minus = 0, ret;
- int r, weekday = -1;
- unsigned i;
-
- /*
- * Allowed syntaxes:
- *
- * 2012-09-22 16:34:22
- * 2012-09-22T16:34:22
- * 2012-09-22 16:34 (seconds will be set to 0)
- * 2012-09-22 (time will be set to 00:00:00)
- * 16:34:22 (date will be set to today)
- * 16:34 (date will be set to today, seconds to 0)
- * now
- * yesterday (time is set to 00:00:00)
- * today (time is set to 00:00:00)
- * tomorrow (time is set to 00:00:00)
- * +5min
- * -5days
- *
- */
-
- assert(t);
- assert(usec);
-
- x = time(NULL);
- localtime_r(&x, &tm);
- tm.tm_isdst = -1;
-
- if (streq(t, "now"))
- goto finish;
-
- else if (streq(t, "today")) {
- tm.tm_sec = tm.tm_min = tm.tm_hour = 0;
- goto finish;
-
- } else if (streq(t, "yesterday")) {
- tm.tm_mday--;
- tm.tm_sec = tm.tm_min = tm.tm_hour = 0;
- goto finish;
-
- } else if (streq(t, "tomorrow")) {
- tm.tm_mday++;
- tm.tm_sec = tm.tm_min = tm.tm_hour = 0;
- goto finish;
-
- } else if (t[0] == '+') {
-
- r = parse_sec(t + 1, &plus);
- if (r < 0)
- return r;
-
- goto finish;
- } else if (t[0] == '-') {
-
- r = parse_sec(t + 1, &minus);
- if (r < 0)
- return r;
-
- goto finish;
-
- } else if (endswith(t, " ago")) {
- char *z;
-
- z = strndup(t, strlen(t) - 4);
- if (!z)
- return -ENOMEM;
-
- r = parse_sec(z, &minus);
- free(z);
- if (r < 0)
- return r;
-
- goto finish;
- }
-
- for (i = 0; i < ARRAY_SIZE(day_nr); i++) {
- size_t skip;
-
- if (!startswith_no_case(t, day_nr[i].name))
- continue;
-
- skip = strlen(day_nr[i].name);
- if (t[skip] != ' ')
- continue;
-
- weekday = day_nr[i].nr;
- t += skip + 1;
- break;
- }
-
- copy = tm;
- k = strptime(t, "%y-%m-%d %H:%M:%S", &tm);
- if (k && *k == 0)
- goto finish;
-
- tm = copy;
- k = strptime(t, "%Y-%m-%d %H:%M:%S", &tm);
- if (k && *k == 0)
- goto finish;
-
- tm = copy;
- k = strptime(t, "%Y-%m-%dT%H:%M:%S", &tm);
- if (k && *k == 0)
- goto finish;
-
- tm = copy;
- k = strptime(t, "%y-%m-%d %H:%M", &tm);
- if (k && *k == 0) {
- tm.tm_sec = 0;
- goto finish;
- }
-
- tm = copy;
- k = strptime(t, "%Y-%m-%d %H:%M", &tm);
- if (k && *k == 0) {
- tm.tm_sec = 0;
- goto finish;
- }
-
- tm = copy;
- k = strptime(t, "%y-%m-%d", &tm);
- if (k && *k == 0) {
- tm.tm_sec = tm.tm_min = tm.tm_hour = 0;
- goto finish;
- }
-
- tm = copy;
- k = strptime(t, "%Y-%m-%d", &tm);
- if (k && *k == 0) {
- tm.tm_sec = tm.tm_min = tm.tm_hour = 0;
- goto finish;
- }
-
- tm = copy;
- k = strptime(t, "%H:%M:%S", &tm);
- if (k && *k == 0)
- goto finish;
-
- tm = copy;
- k = strptime(t, "%H:%M", &tm);
- if (k && *k == 0) {
- tm.tm_sec = 0;
- goto finish;
- }
-
- tm = copy;
- k = strptime(t, "%Y%m%d%H%M%S", &tm);
- if (k && *k == 0) {
- tm.tm_sec = 0;
- goto finish;
- }
-
- return -EINVAL;
-
- finish:
- x = mktime(&tm);
- if (x == (time_t)-1)
- return -EINVAL;
-
- if (weekday >= 0 && tm.tm_wday != weekday)
- return -EINVAL;
-
- ret = (usec_t) x *USEC_PER_SEC;
-
- ret += plus;
- if (ret > minus)
- ret -= minus;
- else
- ret = 0;
-
- *usec = ret;
-
- return 0;
-}
-
-/* Returns the difference in seconds between its argument and GMT. If if TP is
- * invalid or no DST information is available default to UTC, that is, zero.
- * tzset is called so, for example, 'TZ="UTC" hwclock' will work as expected.
- * Derived from glibc/time/strftime_l.c
- */
-int get_gmtoff(const struct tm *tp)
-{
- if (tp->tm_isdst < 0)
- return 0;
-
-#if HAVE_TM_GMTOFF
- return tp->tm_gmtoff;
-#else
- struct tm tm;
- struct tm gtm;
- struct tm ltm = *tp;
- time_t lt;
-
- tzset();
- lt = mktime(&ltm);
- /* Check if mktime returning -1 is an error or a valid time_t */
- if (lt == (time_t) -1) {
- if (! localtime_r(&lt, &tm)
- || ((ltm.tm_sec ^ tm.tm_sec)
- | (ltm.tm_min ^ tm.tm_min)
- | (ltm.tm_hour ^ tm.tm_hour)
- | (ltm.tm_mday ^ tm.tm_mday)
- | (ltm.tm_mon ^ tm.tm_mon)
- | (ltm.tm_year ^ tm.tm_year)))
- return 0;
- }
-
- if (! gmtime_r(&lt, &gtm))
- return 0;
-
- /* Calculate the GMT offset, that is, the difference between the
- * TP argument (ltm) and GMT (gtm).
- *
- * Compute intervening leap days correctly even if year is negative.
- * Take care to avoid int overflow in leap day calculations, but it's OK
- * to assume that A and B are close to each other.
- */
- int a4 = (ltm.tm_year >> 2) + (1900 >> 2) - ! (ltm.tm_year & 3);
- int b4 = (gtm.tm_year >> 2) + (1900 >> 2) - ! (gtm.tm_year & 3);
- int a100 = a4 / 25 - (a4 % 25 < 0);
- int b100 = b4 / 25 - (b4 % 25 < 0);
- int a400 = a100 >> 2;
- int b400 = b100 >> 2;
- int intervening_leap_days = (a4 - b4) - (a100 - b100) + (a400 - b400);
-
- int years = ltm.tm_year - gtm.tm_year;
- int days = (365 * years + intervening_leap_days
- + (ltm.tm_yday - gtm.tm_yday));
-
- return (60 * (60 * (24 * days + (ltm.tm_hour - gtm.tm_hour))
- + (ltm.tm_min - gtm.tm_min)) + (ltm.tm_sec - gtm.tm_sec));
-#endif
-}
-
-static int format_iso_time(struct tm *tm, suseconds_t usec, int flags, char *buf, size_t bufsz)
-{
- char *p = buf;
- int len;
-
- if (flags & ISO_DATE) {
- len = snprintf(p, bufsz, "%4ld-%.2d-%.2d",
- tm->tm_year + (long) 1900,
- tm->tm_mon + 1, tm->tm_mday);
- if (len < 0 || (size_t) len > bufsz)
- goto err;
- bufsz -= len;
- p += len;
- }
-
- if ((flags & ISO_DATE) && (flags & ISO_TIME)) {
- if (bufsz < 1)
- goto err;
- *p++ = (flags & ISO_T) ? 'T' : ' ';
- bufsz--;
- }
-
- if (flags & ISO_TIME) {
- len = snprintf(p, bufsz, "%02d:%02d:%02d", tm->tm_hour,
- tm->tm_min, tm->tm_sec);
- if (len < 0 || (size_t) len > bufsz)
- goto err;
- bufsz -= len;
- p += len;
- }
-
- if (flags & ISO_DOTUSEC) {
- len = snprintf(p, bufsz, ".%06ld", (long) usec);
- if (len < 0 || (size_t) len > bufsz)
- goto err;
- bufsz -= len;
- p += len;
-
- } else if (flags & ISO_COMMAUSEC) {
- len = snprintf(p, bufsz, ",%06ld", (long) usec);
- if (len < 0 || (size_t) len > bufsz)
- goto err;
- bufsz -= len;
- p += len;
- }
-
- if (flags & ISO_TIMEZONE) {
- int tmin = get_gmtoff(tm) / 60;
- int zhour = tmin / 60;
- int zmin = abs(tmin % 60);
- len = snprintf(p, bufsz, "%+03d:%02d", zhour,zmin);
- if (len < 0 || (size_t) len > bufsz)
- goto err;
- }
- return 0;
- err:
- warnx(_("format_iso_time: buffer overflow."));
- return -1;
-}
-
-/* timeval to ISO 8601 */
-int strtimeval_iso(struct timeval *tv, int flags, char *buf, size_t bufsz)
-{
- struct tm tm;
- struct tm *rc;
-
- if (flags & ISO_GMTIME)
- rc = gmtime_r(&tv->tv_sec, &tm);
- else
- rc = localtime_r(&tv->tv_sec, &tm);
-
- if (rc)
- return format_iso_time(&tm, tv->tv_usec, flags, buf, bufsz);
-
- warnx(_("time %ld is out of range."), tv->tv_sec);
- return -1;
-}
-
-/* struct tm to ISO 8601 */
-int strtm_iso(struct tm *tm, int flags, char *buf, size_t bufsz)
-{
- return format_iso_time(tm, 0, flags, buf, bufsz);
-}
-
-/* time_t to ISO 8601 */
-int strtime_iso(const time_t *t, int flags, char *buf, size_t bufsz)
-{
- struct tm tm;
- struct tm *rc;
-
- if (flags & ISO_GMTIME)
- rc = gmtime_r(t, &tm);
- else
- rc = localtime_r(t, &tm);
-
- if (rc)
- return format_iso_time(&tm, 0, flags, buf, bufsz);
-
- warnx(_("time %ld is out of range."), (long)t);
- return -1;
-}
-
-/* relative time functions */
-static inline int time_is_thisyear(struct tm const *const tm,
- struct tm const *const tmnow)
-{
- return tm->tm_year == tmnow->tm_year;
-}
-
-static inline int time_is_today(struct tm const *const tm,
- struct tm const *const tmnow)
-{
- return (tm->tm_yday == tmnow->tm_yday &&
- time_is_thisyear(tm, tmnow));
-}
-
-int strtime_short(const time_t *t, struct timeval *now, int flags, char *buf, size_t bufsz)
-{
- struct tm tm, tmnow;
- int rc = 0;
-
- if (now->tv_sec == 0)
- gettimeofday(now, NULL);
-
- localtime_r(t, &tm);
- localtime_r(&now->tv_sec, &tmnow);
-
- if (time_is_today(&tm, &tmnow)) {
- rc = snprintf(buf, bufsz, "%02d:%02d", tm.tm_hour, tm.tm_min);
- if (rc < 0 || (size_t) rc > bufsz)
- return -1;
- rc = 1;
-
- } else if (time_is_thisyear(&tm, &tmnow)) {
- if (flags & UL_SHORTTIME_THISYEAR_HHMM)
- rc = strftime(buf, bufsz, "%b%d/%H:%M", &tm);
- else
- rc = strftime(buf, bufsz, "%b%d", &tm);
- } else
- rc = strftime(buf, bufsz, "%Y-%b%d", &tm);
-
- return rc <= 0 ? -1 : 0;
-}
-
-#ifndef HAVE_TIMEGM
-time_t timegm(struct tm *tm)
-{
- const char *zone = getenv("TZ");
- time_t ret;
-
- setenv("TZ", "", 1);
- tzset();
- ret = mktime(tm);
- if (zone)
- setenv("TZ", zone, 1);
- else
- unsetenv("TZ");
- tzset();
- return ret;
-}
-#endif /* HAVE_TIMEGM */
-
-#ifdef TEST_PROGRAM_TIMEUTILS
-
-int main(int argc, char *argv[])
-{
- struct timeval tv = { 0 };
- char buf[ISO_BUFSIZ];
-
- if (argc < 2) {
- fprintf(stderr, "usage: %s [<time> [<usec>]] | [--timestamp <str>]\n", argv[0]);
- exit(EXIT_FAILURE);
- }
-
- if (strcmp(argv[1], "--timestamp") == 0) {
- usec_t usec;
-
- parse_timestamp(argv[2], &usec);
- tv.tv_sec = (time_t) (usec / 1000000);
- tv.tv_usec = usec % 1000000;
- } else {
- tv.tv_sec = strtos64_or_err(argv[1], "failed to parse <time>");
- if (argc == 3)
- tv.tv_usec = strtos64_or_err(argv[2], "failed to parse <usec>");
- }
-
- strtimeval_iso(&tv, ISO_DATE, buf, sizeof(buf));
- printf("Date: '%s'\n", buf);
-
- strtimeval_iso(&tv, ISO_TIME, buf, sizeof(buf));
- printf("Time: '%s'\n", buf);
-
- strtimeval_iso(&tv, ISO_DATE | ISO_TIME | ISO_COMMAUSEC | ISO_T,
- buf, sizeof(buf));
- printf("Full: '%s'\n", buf);
-
- strtimeval_iso(&tv, ISO_TIMESTAMP_DOT, buf, sizeof(buf));
- printf("Zone: '%s'\n", buf);
-
- return EXIT_SUCCESS;
-}
-
-#endif /* TEST_PROGRAM_TIMEUTILS */
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