2 * GIT - The information manager from hell
4 * Copyright (C) Linus Torvalds, 2005
10 * This is like mktime, but without normalization of tm_wday and tm_yday.
12 static time_t tm_to_time_t(const struct tm *tm)
14 static const int mdays[] = {
15 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334
17 int year = tm->tm_year - 70;
18 int month = tm->tm_mon;
19 int day = tm->tm_mday;
21 if (year < 0 || year > 129) /* algo only works for 1970-2099 */
23 if (month < 0 || month > 11) /* array bounds */
25 if (month < 2 || (year + 2) % 4)
27 if (tm->tm_hour < 0 || tm->tm_min < 0 || tm->tm_sec < 0)
29 return (year * 365 + (year + 1) / 4 + mdays[month] + day) * 24*60*60UL +
30 tm->tm_hour * 60*60 + tm->tm_min * 60 + tm->tm_sec;
33 static const char *month_names[] = {
34 "January", "February", "March", "April", "May", "June",
35 "July", "August", "September", "October", "November", "December"
38 static const char *weekday_names[] = {
39 "Sundays", "Mondays", "Tuesdays", "Wednesdays", "Thursdays", "Fridays", "Saturdays"
42 static time_t gm_time_t(unsigned long time, int tz)
46 minutes = tz < 0 ? -tz : tz;
47 minutes = (minutes / 100)*60 + (minutes % 100);
48 minutes = tz < 0 ? -minutes : minutes;
49 return time + minutes * 60;
53 * The "tz" thing is passed in as this strange "decimal parse of tz"
54 * thing, which means that tz -0100 is passed in as the integer -100,
55 * even though it means "sixty minutes off"
57 static struct tm *time_to_tm(unsigned long time, int tz)
59 time_t t = gm_time_t(time, tz);
64 * What value of "tz" was in effect back then at "time" in the
67 static int local_tzoffset(unsigned long time)
75 t_local = tm_to_time_t(&tm);
78 return 0; /* error; just use +0000 */
86 offset /= 60; /* in minutes */
87 offset = (offset % 60) + ((offset / 60) * 100);
88 return offset * eastwest;
91 void show_date_relative(unsigned long time, int tz,
92 const struct timeval *now,
93 struct strbuf *timebuf)
96 if (now->tv_sec < time) {
97 strbuf_addstr(timebuf, _("in the future"));
100 diff = now->tv_sec - time;
103 Q_("%lu second ago", "%lu seconds ago", diff), diff);
106 /* Turn it into minutes */
107 diff = (diff + 30) / 60;
110 Q_("%lu minute ago", "%lu minutes ago", diff), diff);
113 /* Turn it into hours */
114 diff = (diff + 30) / 60;
117 Q_("%lu hour ago", "%lu hours ago", diff), diff);
120 /* We deal with number of days from here on */
121 diff = (diff + 12) / 24;
124 Q_("%lu day ago", "%lu days ago", diff), diff);
127 /* Say weeks for the past 10 weeks or so */
130 Q_("%lu week ago", "%lu weeks ago", (diff + 3) / 7),
134 /* Say months for the past 12 months or so */
137 Q_("%lu month ago", "%lu months ago", (diff + 15) / 30),
141 /* Give years and months for 5 years or so */
143 unsigned long totalmonths = (diff * 12 * 2 + 365) / (365 * 2);
144 unsigned long years = totalmonths / 12;
145 unsigned long months = totalmonths % 12;
147 struct strbuf sb = STRBUF_INIT;
148 strbuf_addf(&sb, Q_("%lu year", "%lu years", years), years);
150 /* TRANSLATORS: "%s" is "<n> years" */
151 Q_("%s, %lu month ago", "%s, %lu months ago", months),
156 Q_("%lu year ago", "%lu years ago", years), years);
159 /* Otherwise, just years. Centuries is probably overkill. */
161 Q_("%lu year ago", "%lu years ago", (diff + 183) / 365),
165 struct date_mode *date_mode_from_type(enum date_mode_type type)
167 static struct date_mode mode;
168 if (type == DATE_STRFTIME)
169 die("BUG: cannot create anonymous strftime date_mode struct");
175 const char *show_date(unsigned long time, int tz, const struct date_mode *mode)
178 static struct strbuf timebuf = STRBUF_INIT;
180 if (mode->type == DATE_UNIX) {
181 strbuf_reset(&timebuf);
182 strbuf_addf(&timebuf, "%lu", time);
187 tz = local_tzoffset(time);
189 if (mode->type == DATE_RAW) {
190 strbuf_reset(&timebuf);
191 strbuf_addf(&timebuf, "%lu %+05d", time, tz);
195 if (mode->type == DATE_RELATIVE) {
198 strbuf_reset(&timebuf);
199 gettimeofday(&now, NULL);
200 show_date_relative(time, tz, &now, &timebuf);
204 tm = time_to_tm(time, tz);
206 tm = time_to_tm(0, 0);
210 strbuf_reset(&timebuf);
211 if (mode->type == DATE_SHORT)
212 strbuf_addf(&timebuf, "%04d-%02d-%02d", tm->tm_year + 1900,
213 tm->tm_mon + 1, tm->tm_mday);
214 else if (mode->type == DATE_ISO8601)
215 strbuf_addf(&timebuf, "%04d-%02d-%02d %02d:%02d:%02d %+05d",
219 tm->tm_hour, tm->tm_min, tm->tm_sec,
221 else if (mode->type == DATE_ISO8601_STRICT) {
222 char sign = (tz >= 0) ? '+' : '-';
224 strbuf_addf(&timebuf, "%04d-%02d-%02dT%02d:%02d:%02d%c%02d:%02d",
228 tm->tm_hour, tm->tm_min, tm->tm_sec,
229 sign, tz / 100, tz % 100);
230 } else if (mode->type == DATE_RFC2822)
231 strbuf_addf(&timebuf, "%.3s, %d %.3s %d %02d:%02d:%02d %+05d",
232 weekday_names[tm->tm_wday], tm->tm_mday,
233 month_names[tm->tm_mon], tm->tm_year + 1900,
234 tm->tm_hour, tm->tm_min, tm->tm_sec, tz);
235 else if (mode->type == DATE_STRFTIME)
236 strbuf_addftime(&timebuf, mode->strftime_fmt, tm);
238 strbuf_addf(&timebuf, "%.3s %.3s %d %02d:%02d:%02d %d%c%+05d",
239 weekday_names[tm->tm_wday],
240 month_names[tm->tm_mon],
242 tm->tm_hour, tm->tm_min, tm->tm_sec,
244 mode->local ? 0 : ' ',
250 * Check these. And note how it doesn't do the summer-time conversion.
252 * In my world, it's always summer, and things are probably a bit off
255 static const struct {
259 } timezone_names[] = {
260 { "IDLW", -12, 0, }, /* International Date Line West */
261 { "NT", -11, 0, }, /* Nome */
262 { "CAT", -10, 0, }, /* Central Alaska */
263 { "HST", -10, 0, }, /* Hawaii Standard */
264 { "HDT", -10, 1, }, /* Hawaii Daylight */
265 { "YST", -9, 0, }, /* Yukon Standard */
266 { "YDT", -9, 1, }, /* Yukon Daylight */
267 { "PST", -8, 0, }, /* Pacific Standard */
268 { "PDT", -8, 1, }, /* Pacific Daylight */
269 { "MST", -7, 0, }, /* Mountain Standard */
270 { "MDT", -7, 1, }, /* Mountain Daylight */
271 { "CST", -6, 0, }, /* Central Standard */
272 { "CDT", -6, 1, }, /* Central Daylight */
273 { "EST", -5, 0, }, /* Eastern Standard */
274 { "EDT", -5, 1, }, /* Eastern Daylight */
275 { "AST", -3, 0, }, /* Atlantic Standard */
276 { "ADT", -3, 1, }, /* Atlantic Daylight */
277 { "WAT", -1, 0, }, /* West Africa */
279 { "GMT", 0, 0, }, /* Greenwich Mean */
280 { "UTC", 0, 0, }, /* Universal (Coordinated) */
281 { "Z", 0, 0, }, /* Zulu, alias for UTC */
283 { "WET", 0, 0, }, /* Western European */
284 { "BST", 0, 1, }, /* British Summer */
285 { "CET", +1, 0, }, /* Central European */
286 { "MET", +1, 0, }, /* Middle European */
287 { "MEWT", +1, 0, }, /* Middle European Winter */
288 { "MEST", +1, 1, }, /* Middle European Summer */
289 { "CEST", +1, 1, }, /* Central European Summer */
290 { "MESZ", +1, 1, }, /* Middle European Summer */
291 { "FWT", +1, 0, }, /* French Winter */
292 { "FST", +1, 1, }, /* French Summer */
293 { "EET", +2, 0, }, /* Eastern Europe, USSR Zone 1 */
294 { "EEST", +2, 1, }, /* Eastern European Daylight */
295 { "WAST", +7, 0, }, /* West Australian Standard */
296 { "WADT", +7, 1, }, /* West Australian Daylight */
297 { "CCT", +8, 0, }, /* China Coast, USSR Zone 7 */
298 { "JST", +9, 0, }, /* Japan Standard, USSR Zone 8 */
299 { "EAST", +10, 0, }, /* Eastern Australian Standard */
300 { "EADT", +10, 1, }, /* Eastern Australian Daylight */
301 { "GST", +10, 0, }, /* Guam Standard, USSR Zone 9 */
302 { "NZT", +12, 0, }, /* New Zealand */
303 { "NZST", +12, 0, }, /* New Zealand Standard */
304 { "NZDT", +12, 1, }, /* New Zealand Daylight */
305 { "IDLE", +12, 0, }, /* International Date Line East */
308 static int match_string(const char *date, const char *str)
312 for (i = 0; *date; date++, str++, i++) {
315 if (toupper(*date) == toupper(*str))
324 static int skip_alpha(const char *date)
329 } while (isalpha(date[i]));
334 * Parse month, weekday, or timezone name
336 static int match_alpha(const char *date, struct tm *tm, int *offset)
340 for (i = 0; i < 12; i++) {
341 int match = match_string(date, month_names[i]);
348 for (i = 0; i < 7; i++) {
349 int match = match_string(date, weekday_names[i]);
356 for (i = 0; i < ARRAY_SIZE(timezone_names); i++) {
357 int match = match_string(date, timezone_names[i].name);
358 if (match >= 3 || match == strlen(timezone_names[i].name)) {
359 int off = timezone_names[i].offset;
361 /* This is bogus, but we like summer */
362 off += timezone_names[i].dst;
364 /* Only use the tz name offset if we don't have anything better */
372 if (match_string(date, "PM") == 2) {
373 tm->tm_hour = (tm->tm_hour % 12) + 12;
377 if (match_string(date, "AM") == 2) {
378 tm->tm_hour = (tm->tm_hour % 12) + 0;
383 return skip_alpha(date);
386 static int is_date(int year, int month, int day, struct tm *now_tm, time_t now, struct tm *tm)
388 if (month > 0 && month < 13 && day > 0 && day < 32) {
389 struct tm check = *tm;
390 struct tm *r = (now_tm ? &check : tm);
393 r->tm_mon = month - 1;
398 r->tm_year = now_tm->tm_year;
400 else if (year >= 1970 && year < 2100)
401 r->tm_year = year - 1900;
402 else if (year > 70 && year < 100)
405 r->tm_year = year + 100;
411 specified = tm_to_time_t(r);
413 /* Be it commit time or author time, it does not make
414 * sense to specify timestamp way into the future. Make
415 * sure it is not later than ten days from now...
417 if ((specified != -1) && (now + 10*24*3600 < specified))
419 tm->tm_mon = r->tm_mon;
420 tm->tm_mday = r->tm_mday;
422 tm->tm_year = r->tm_year;
428 static int match_multi_number(unsigned long num, char c, const char *date,
429 char *end, struct tm *tm, time_t now)
432 struct tm *refuse_future;
435 num2 = strtol(end+1, &end, 10);
437 if (*end == c && isdigit(end[1]))
438 num3 = strtol(end+1, &end, 10);
445 if (num < 25 && num2 >= 0 && num2 < 60 && num3 >= 0 && num3 <= 60) {
458 refuse_future = NULL;
459 if (gmtime_r(&now, &now_tm))
460 refuse_future = &now_tm;
464 if (is_date(num, num2, num3, NULL, now, tm))
467 if (is_date(num, num3, num2, NULL, now, tm))
470 /* Our eastern European friends say dd.mm.yy[yy]
471 * is the norm there, so giving precedence to
472 * mm/dd/yy[yy] form only when separator is not '.'
475 is_date(num3, num, num2, refuse_future, now, tm))
477 /* European dd.mm.yy[yy] or funny US dd/mm/yy[yy] */
478 if (is_date(num3, num2, num, refuse_future, now, tm))
480 /* Funny European mm.dd.yy */
482 is_date(num3, num, num2, refuse_future, now, tm))
490 * Have we filled in any part of the time/date yet?
491 * We just do a binary 'and' to see if the sign bit
492 * is set in all the values.
494 static inline int nodate(struct tm *tm)
496 return (tm->tm_year &
505 * We've seen a digit. Time? Year? Date?
507 static int match_digit(const char *date, struct tm *tm, int *offset, int *tm_gmt)
513 num = strtoul(date, &end, 10);
516 * Seconds since 1970? We trigger on that for any numbers with
517 * more than 8 digits. This is because we don't want to rule out
518 * numbers like 20070606 as a YYYYMMDD date.
520 if (num >= 100000000 && nodate(tm)) {
522 if (gmtime_r(&time, tm)) {
529 * Check for special formats: num[-.:/]num[same]num
536 if (isdigit(end[1])) {
537 int match = match_multi_number(num, *end, date, end, tm, 0);
544 * None of the special formats? Try to guess what
545 * the number meant. We use the number of digits
546 * to make a more educated guess..
551 } while (isdigit(date[n]));
553 /* Four-digit year or a timezone? */
555 if (num <= 1400 && *offset == -1) {
556 unsigned int minutes = num % 100;
557 unsigned int hours = num / 100;
558 *offset = hours*60 + minutes;
559 } else if (num > 1900 && num < 2100)
560 tm->tm_year = num - 1900;
565 * Ignore lots of numerals. We took care of 4-digit years above.
566 * Days or months must be one or two digits.
572 * NOTE! We will give precedence to day-of-month over month or
573 * year numbers in the 1-12 range. So 05 is always "mday 5",
574 * unless we already have a mday..
576 * IOW, 01 Apr 05 parses as "April 1st, 2005".
578 if (num > 0 && num < 32 && tm->tm_mday < 0) {
583 /* Two-digit year? */
584 if (n == 2 && tm->tm_year < 0) {
585 if (num < 10 && tm->tm_mday >= 0) {
586 tm->tm_year = num + 100;
595 if (num > 0 && num < 13 && tm->tm_mon < 0)
601 static int match_tz(const char *date, int *offp)
604 int hour = strtoul(date + 1, &end, 10);
605 int n = end - (date + 1);
613 min = 99; /* random crap */
614 } else if (*end == ':') {
616 min = strtoul(end + 1, &end, 10);
617 if (end - (date + 1) != 5)
618 min = 99; /* random crap */
619 } /* otherwise we parsed "hh" */
622 * Don't accept any random crap. Even though some places have
623 * offset larger than 12 hours (e.g. Pacific/Kiritimati is at
624 * UTC+14), there is something wrong if hour part is much
625 * larger than that. We might also want to check that the
626 * minutes are divisible by 15 or something too. (Offset of
627 * Kathmandu, Nepal is UTC+5:45)
629 if (min < 60 && hour < 24) {
630 int offset = hour * 60 + min;
638 static void date_string(unsigned long date, int offset, struct strbuf *buf)
646 strbuf_addf(buf, "%lu %c%02d%02d", date, sign, offset / 60, offset % 60);
650 * Parse a string like "0 +0000" as ancient timestamp near epoch, but
651 * only when it appears not as part of any other string.
653 static int match_object_header_date(const char *date, unsigned long *timestamp, int *offset)
659 if (*date < '0' || '9' < *date)
661 stamp = strtoul(date, &end, 10);
662 if (*end != ' ' || stamp == ULONG_MAX || (end[1] != '+' && end[1] != '-'))
665 ofs = strtol(date, &end, 10);
666 if ((*end != '\0' && (*end != '\n')) || end != date + 4)
668 ofs = (ofs / 100) * 60 + (ofs % 100);
676 /* Gr. strptime is crap for this; it doesn't have a way to require RFC2822
677 (i.e. English) day/month names, and it doesn't work correctly with %z. */
678 int parse_date_basic(const char *date, unsigned long *timestamp, int *offset)
682 unsigned long dummy_timestamp;
686 timestamp = &dummy_timestamp;
688 offset = &dummy_offset;
690 memset(&tm, 0, sizeof(tm));
702 !match_object_header_date(date + 1, timestamp, offset))
703 return 0; /* success */
706 unsigned char c = *date;
708 /* Stop at end of string or newline */
713 match = match_alpha(date, &tm, offset);
715 match = match_digit(date, &tm, offset, &tm_gmt);
716 else if ((c == '-' || c == '+') && isdigit(date[1]))
717 match = match_tz(date, offset);
727 /* do not use mktime(), which uses local timezone, here */
728 *timestamp = tm_to_time_t(&tm);
729 if (*timestamp == -1)
735 /* gmtime_r() in match_digit() may have clobbered it */
737 temp_time = mktime(&tm);
738 if ((time_t)*timestamp > temp_time) {
739 *offset = ((time_t)*timestamp - temp_time) / 60;
741 *offset = -(int)((temp_time - (time_t)*timestamp) / 60);
746 *timestamp -= *offset * 60;
747 return 0; /* success */
750 int parse_expiry_date(const char *date, unsigned long *timestamp)
754 if (!strcmp(date, "never") || !strcmp(date, "false"))
756 else if (!strcmp(date, "all") || !strcmp(date, "now"))
758 * We take over "now" here, which usually translates
759 * to the current timestamp. This is because the user
760 * really means to expire everything she has done in
761 * the past, and by definition reflogs are the record
762 * of the past, and there is nothing from the future
765 *timestamp = ULONG_MAX;
767 *timestamp = approxidate_careful(date, &errors);
772 int parse_date(const char *date, struct strbuf *result)
774 unsigned long timestamp;
776 if (parse_date_basic(date, ×tamp, &offset))
778 date_string(timestamp, offset, result);
782 static enum date_mode_type parse_date_type(const char *format, const char **end)
784 if (skip_prefix(format, "relative", end))
785 return DATE_RELATIVE;
786 if (skip_prefix(format, "iso8601-strict", end) ||
787 skip_prefix(format, "iso-strict", end))
788 return DATE_ISO8601_STRICT;
789 if (skip_prefix(format, "iso8601", end) ||
790 skip_prefix(format, "iso", end))
792 if (skip_prefix(format, "rfc2822", end) ||
793 skip_prefix(format, "rfc", end))
795 if (skip_prefix(format, "short", end))
797 if (skip_prefix(format, "default", end))
799 if (skip_prefix(format, "raw", end))
801 if (skip_prefix(format, "unix", end))
803 if (skip_prefix(format, "format", end))
804 return DATE_STRFTIME;
806 die("unknown date format %s", format);
809 void parse_date_format(const char *format, struct date_mode *mode)
813 /* historical alias */
814 if (!strcmp(format, "local"))
815 format = "default-local";
817 mode->type = parse_date_type(format, &p);
820 if (skip_prefix(p, "-local", &p))
823 if (mode->type == DATE_STRFTIME) {
824 if (!skip_prefix(p, ":", &p))
825 die("date format missing colon separator: %s", format);
826 mode->strftime_fmt = xstrdup(p);
828 die("unknown date format %s", format);
831 void datestamp(struct strbuf *out)
838 offset = tm_to_time_t(localtime(&now)) - now;
841 date_string(now, offset, out);
845 * Relative time update (eg "2 days ago"). If we haven't set the time
846 * yet, we need to set it from current time.
848 static unsigned long update_tm(struct tm *tm, struct tm *now, unsigned long sec)
853 tm->tm_mday = now->tm_mday;
855 tm->tm_mon = now->tm_mon;
856 if (tm->tm_year < 0) {
857 tm->tm_year = now->tm_year;
858 if (tm->tm_mon > now->tm_mon)
862 n = mktime(tm) - sec;
867 static void date_now(struct tm *tm, struct tm *now, int *num)
869 update_tm(tm, now, 0);
872 static void date_yesterday(struct tm *tm, struct tm *now, int *num)
874 update_tm(tm, now, 24*60*60);
877 static void date_time(struct tm *tm, struct tm *now, int hour)
879 if (tm->tm_hour < hour)
880 date_yesterday(tm, now, NULL);
886 static void date_midnight(struct tm *tm, struct tm *now, int *num)
888 date_time(tm, now, 0);
891 static void date_noon(struct tm *tm, struct tm *now, int *num)
893 date_time(tm, now, 12);
896 static void date_tea(struct tm *tm, struct tm *now, int *num)
898 date_time(tm, now, 17);
901 static void date_pm(struct tm *tm, struct tm *now, int *num)
912 tm->tm_hour = (hour % 12) + 12;
915 static void date_am(struct tm *tm, struct tm *now, int *num)
926 tm->tm_hour = (hour % 12);
929 static void date_never(struct tm *tm, struct tm *now, int *num)
935 static const struct special {
937 void (*fn)(struct tm *, struct tm *, int *);
939 { "yesterday", date_yesterday },
940 { "noon", date_noon },
941 { "midnight", date_midnight },
945 { "never", date_never },
950 static const char *number_name[] = {
951 "zero", "one", "two", "three", "four",
952 "five", "six", "seven", "eight", "nine", "ten",
955 static const struct typelen {
962 { "days", 24*60*60 },
963 { "weeks", 7*24*60*60 },
967 static const char *approxidate_alpha(const char *date, struct tm *tm, struct tm *now, int *num, int *touched)
969 const struct typelen *tl;
970 const struct special *s;
971 const char *end = date;
974 while (isalpha(*++end))
977 for (i = 0; i < 12; i++) {
978 int match = match_string(date, month_names[i]);
986 for (s = special; s->name; s++) {
987 int len = strlen(s->name);
988 if (match_string(date, s->name) == len) {
996 for (i = 1; i < 11; i++) {
997 int len = strlen(number_name[i]);
998 if (match_string(date, number_name[i]) == len) {
1004 if (match_string(date, "last") == 4) {
1013 int len = strlen(tl->type);
1014 if (match_string(date, tl->type) >= len-1) {
1015 update_tm(tm, now, tl->length * *num);
1023 for (i = 0; i < 7; i++) {
1024 int match = match_string(date, weekday_names[i]);
1026 int diff, n = *num -1;
1029 diff = tm->tm_wday - i;
1034 update_tm(tm, now, diff * 24 * 60 * 60);
1040 if (match_string(date, "months") >= 5) {
1042 update_tm(tm, now, 0); /* fill in date fields if needed */
1043 n = tm->tm_mon - *num;
1054 if (match_string(date, "years") >= 4) {
1055 update_tm(tm, now, 0); /* fill in date fields if needed */
1056 tm->tm_year -= *num;
1065 static const char *approxidate_digit(const char *date, struct tm *tm, int *num,
1069 unsigned long number = strtoul(date, &end, 10);
1076 if (isdigit(end[1])) {
1077 int match = match_multi_number(number, *end, date, end,
1080 return date + match;
1084 /* Accept zero-padding only for small numbers ("Dec 02", never "Dec 0002") */
1085 if (date[0] != '0' || end - date <= 2)
1091 * Do we have a pending number at the end, or when
1092 * we see a new one? Let's assume it's a month day,
1093 * as in "Dec 6, 1992"
1095 static void pending_number(struct tm *tm, int *num)
1101 if (tm->tm_mday < 0 && number < 32)
1102 tm->tm_mday = number;
1103 else if (tm->tm_mon < 0 && number < 13)
1104 tm->tm_mon = number-1;
1105 else if (tm->tm_year < 0) {
1106 if (number > 1969 && number < 2100)
1107 tm->tm_year = number - 1900;
1108 else if (number > 69 && number < 100)
1109 tm->tm_year = number;
1110 else if (number < 38)
1111 tm->tm_year = 100 + number;
1112 /* We screw up for number = 00 ? */
1117 static unsigned long approxidate_str(const char *date,
1118 const struct timeval *tv,
1126 time_sec = tv->tv_sec;
1127 localtime_r(&time_sec, &tm);
1135 unsigned char c = *date;
1140 pending_number(&tm, &number);
1141 date = approxidate_digit(date-1, &tm, &number, time_sec);
1146 date = approxidate_alpha(date-1, &tm, &now, &number, &touched);
1148 pending_number(&tm, &number);
1151 return update_tm(&tm, &now, 0);
1154 unsigned long approxidate_relative(const char *date, const struct timeval *tv)
1156 unsigned long timestamp;
1160 if (!parse_date_basic(date, ×tamp, &offset))
1162 return approxidate_str(date, tv, &errors);
1165 unsigned long approxidate_careful(const char *date, int *error_ret)
1168 unsigned long timestamp;
1174 if (!parse_date_basic(date, ×tamp, &offset)) {
1179 gettimeofday(&tv, NULL);
1180 return approxidate_str(date, &tv, error_ret);
1183 int date_overflows(unsigned long t)
1187 /* If we overflowed our unsigned long, that's bad... */
1192 * ...but we also are going to feed the result to system
1193 * functions that expect time_t, which is often "signed long".
1194 * Make sure that we fit into time_t, as well.
1197 return t != sys || (t < 1) != (sys < 1);