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![Junio C Hamano](/assets/img/avatar_default.png)
More header clean-up. * en/header-split-cache-h-part-2: (22 commits) reftable: ensure git-compat-util.h is the first (indirect) include diff.h: reduce unnecessary includes object-store.h: reduce unnecessary includes commit.h: reduce unnecessary includes fsmonitor: reduce includes of cache.h cache.h: remove unnecessary headers treewide: remove cache.h inclusion due to previous changes cache,tree: move basic name compare functions from read-cache to tree cache,tree: move cmp_cache_name_compare from tree.[ch] to read-cache.c hash-ll.h: split out of hash.h to remove dependency on repository.h tree-diff.c: move S_DIFFTREE_IFXMIN_NEQ define from cache.h dir.h: move DTYPE defines from cache.h versioncmp.h: move declarations for versioncmp.c functions from cache.h ws.h: move declarations for ws.c functions from cache.h match-trees.h: move declarations for match-trees.c functions from cache.h pkt-line.h: move declarations for pkt-line.c functions from cache.h base85.h: move declarations for base85.c functions from cache.h copy.h: move declarations for copy.c functions from cache.h server-info.h: move declarations for server-info.c functions from cache.h packfile.h: move pack_window and pack_entry from cache.h ...
1405 lines
32 KiB
C
1405 lines
32 KiB
C
/*
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* GIT - The information manager from hell
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*
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* Copyright (C) Linus Torvalds, 2005
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*/
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#include "git-compat-util.h"
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#include "date.h"
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#include "gettext.h"
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#include "pager.h"
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#include "strbuf.h"
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/*
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* This is like mktime, but without normalization of tm_wday and tm_yday.
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*/
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time_t tm_to_time_t(const struct tm *tm)
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{
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static const int mdays[] = {
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0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334
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};
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int year = tm->tm_year - 70;
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int month = tm->tm_mon;
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int day = tm->tm_mday;
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if (year < 0 || year > 129) /* algo only works for 1970-2099 */
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return -1;
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if (month < 0 || month > 11) /* array bounds */
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return -1;
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if (month < 2 || (year + 2) % 4)
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day--;
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if (tm->tm_hour < 0 || tm->tm_min < 0 || tm->tm_sec < 0)
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return -1;
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return (year * 365 + (year + 1) / 4 + mdays[month] + day) * 24*60*60UL +
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tm->tm_hour * 60*60 + tm->tm_min * 60 + tm->tm_sec;
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}
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static const char *month_names[] = {
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"January", "February", "March", "April", "May", "June",
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"July", "August", "September", "October", "November", "December"
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};
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static const char *weekday_names[] = {
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"Sundays", "Mondays", "Tuesdays", "Wednesdays", "Thursdays", "Fridays", "Saturdays"
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};
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static time_t gm_time_t(timestamp_t time, int tz)
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{
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int minutes;
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minutes = tz < 0 ? -tz : tz;
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minutes = (minutes / 100)*60 + (minutes % 100);
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minutes = tz < 0 ? -minutes : minutes;
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if (minutes > 0) {
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if (unsigned_add_overflows(time, minutes * 60))
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die("Timestamp+tz too large: %"PRItime" +%04d",
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time, tz);
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} else if (time < -minutes * 60)
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die("Timestamp before Unix epoch: %"PRItime" %04d", time, tz);
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time += minutes * 60;
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if (date_overflows(time))
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die("Timestamp too large for this system: %"PRItime, time);
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return (time_t)time;
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}
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/*
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* The "tz" thing is passed in as this strange "decimal parse of tz"
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* thing, which means that tz -0100 is passed in as the integer -100,
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* even though it means "sixty minutes off"
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*/
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static struct tm *time_to_tm(timestamp_t time, int tz, struct tm *tm)
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{
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time_t t = gm_time_t(time, tz);
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return gmtime_r(&t, tm);
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}
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static struct tm *time_to_tm_local(timestamp_t time, struct tm *tm)
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{
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time_t t = time;
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return localtime_r(&t, tm);
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}
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/*
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* Fill in the localtime 'struct tm' for the supplied time,
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* and return the local tz.
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*/
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static int local_time_tzoffset(time_t t, struct tm *tm)
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{
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time_t t_local;
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int offset, eastwest;
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localtime_r(&t, tm);
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t_local = tm_to_time_t(tm);
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if (t_local == -1)
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return 0; /* error; just use +0000 */
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if (t_local < t) {
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eastwest = -1;
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offset = t - t_local;
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} else {
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eastwest = 1;
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offset = t_local - t;
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}
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offset /= 60; /* in minutes */
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offset = (offset % 60) + ((offset / 60) * 100);
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return offset * eastwest;
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}
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/*
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* What value of "tz" was in effect back then at "time" in the
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* local timezone?
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*/
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static int local_tzoffset(timestamp_t time)
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{
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struct tm tm;
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if (date_overflows(time))
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die("Timestamp too large for this system: %"PRItime, time);
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return local_time_tzoffset((time_t)time, &tm);
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}
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static void get_time(struct timeval *now)
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{
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const char *x;
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x = getenv("GIT_TEST_DATE_NOW");
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if (x) {
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now->tv_sec = atoi(x);
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now->tv_usec = 0;
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}
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else
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gettimeofday(now, NULL);
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}
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void show_date_relative(timestamp_t time, struct strbuf *timebuf)
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{
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struct timeval now;
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timestamp_t diff;
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get_time(&now);
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if (now.tv_sec < time) {
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strbuf_addstr(timebuf, _("in the future"));
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return;
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}
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diff = now.tv_sec - time;
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if (diff < 90) {
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strbuf_addf(timebuf,
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Q_("%"PRItime" second ago", "%"PRItime" seconds ago", diff), diff);
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return;
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}
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/* Turn it into minutes */
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diff = (diff + 30) / 60;
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if (diff < 90) {
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strbuf_addf(timebuf,
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Q_("%"PRItime" minute ago", "%"PRItime" minutes ago", diff), diff);
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return;
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}
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/* Turn it into hours */
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diff = (diff + 30) / 60;
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if (diff < 36) {
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strbuf_addf(timebuf,
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Q_("%"PRItime" hour ago", "%"PRItime" hours ago", diff), diff);
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return;
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}
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/* We deal with number of days from here on */
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diff = (diff + 12) / 24;
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if (diff < 14) {
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strbuf_addf(timebuf,
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Q_("%"PRItime" day ago", "%"PRItime" days ago", diff), diff);
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return;
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}
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/* Say weeks for the past 10 weeks or so */
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if (diff < 70) {
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strbuf_addf(timebuf,
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Q_("%"PRItime" week ago", "%"PRItime" weeks ago", (diff + 3) / 7),
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(diff + 3) / 7);
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return;
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}
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/* Say months for the past 12 months or so */
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if (diff < 365) {
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strbuf_addf(timebuf,
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Q_("%"PRItime" month ago", "%"PRItime" months ago", (diff + 15) / 30),
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(diff + 15) / 30);
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return;
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}
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/* Give years and months for 5 years or so */
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if (diff < 1825) {
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timestamp_t totalmonths = (diff * 12 * 2 + 365) / (365 * 2);
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timestamp_t years = totalmonths / 12;
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timestamp_t months = totalmonths % 12;
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if (months) {
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struct strbuf sb = STRBUF_INIT;
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strbuf_addf(&sb, Q_("%"PRItime" year", "%"PRItime" years", years), years);
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strbuf_addf(timebuf,
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/* TRANSLATORS: "%s" is "<n> years" */
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Q_("%s, %"PRItime" month ago", "%s, %"PRItime" months ago", months),
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sb.buf, months);
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strbuf_release(&sb);
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} else
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strbuf_addf(timebuf,
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Q_("%"PRItime" year ago", "%"PRItime" years ago", years), years);
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return;
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}
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/* Otherwise, just years. Centuries is probably overkill. */
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strbuf_addf(timebuf,
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Q_("%"PRItime" year ago", "%"PRItime" years ago", (diff + 183) / 365),
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(diff + 183) / 365);
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}
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struct date_mode *date_mode_from_type(enum date_mode_type type)
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{
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static struct date_mode mode = DATE_MODE_INIT;
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if (type == DATE_STRFTIME)
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BUG("cannot create anonymous strftime date_mode struct");
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mode.type = type;
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return &mode;
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}
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static void show_date_normal(struct strbuf *buf, timestamp_t time, struct tm *tm, int tz, struct tm *human_tm, int human_tz, int local)
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{
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struct {
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unsigned int year:1,
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date:1,
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wday:1,
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time:1,
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seconds:1,
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tz:1;
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} hide = { 0 };
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hide.tz = local || tz == human_tz;
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hide.year = tm->tm_year == human_tm->tm_year;
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if (hide.year) {
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if (tm->tm_mon == human_tm->tm_mon) {
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if (tm->tm_mday > human_tm->tm_mday) {
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/* Future date: think timezones */
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} else if (tm->tm_mday == human_tm->tm_mday) {
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hide.date = hide.wday = 1;
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} else if (tm->tm_mday + 5 > human_tm->tm_mday) {
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/* Leave just weekday if it was a few days ago */
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hide.date = 1;
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}
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}
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}
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/* Show "today" times as just relative times */
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if (hide.wday) {
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show_date_relative(time, buf);
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return;
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}
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/*
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* Always hide seconds for human-readable.
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* Hide timezone if showing date.
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* Hide weekday and time if showing year.
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*
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* The logic here is two-fold:
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* (a) only show details when recent enough to matter
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* (b) keep the maximum length "similar", and in check
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*/
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if (human_tm->tm_year) {
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hide.seconds = 1;
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hide.tz |= !hide.date;
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hide.wday = hide.time = !hide.year;
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}
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if (!hide.wday)
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strbuf_addf(buf, "%.3s ", weekday_names[tm->tm_wday]);
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if (!hide.date)
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strbuf_addf(buf, "%.3s %d ", month_names[tm->tm_mon], tm->tm_mday);
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/* Do we want AM/PM depending on locale? */
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if (!hide.time) {
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strbuf_addf(buf, "%02d:%02d", tm->tm_hour, tm->tm_min);
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if (!hide.seconds)
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strbuf_addf(buf, ":%02d", tm->tm_sec);
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} else
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strbuf_rtrim(buf);
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if (!hide.year)
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strbuf_addf(buf, " %d", tm->tm_year + 1900);
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if (!hide.tz)
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strbuf_addf(buf, " %+05d", tz);
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}
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const char *show_date(timestamp_t time, int tz, const struct date_mode *mode)
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{
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struct tm *tm;
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struct tm tmbuf = { 0 };
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struct tm human_tm = { 0 };
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int human_tz = -1;
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static struct strbuf timebuf = STRBUF_INIT;
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if (mode->type == DATE_UNIX) {
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strbuf_reset(&timebuf);
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strbuf_addf(&timebuf, "%"PRItime, time);
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return timebuf.buf;
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}
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if (mode->type == DATE_HUMAN) {
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struct timeval now;
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get_time(&now);
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/* Fill in the data for "current time" in human_tz and human_tm */
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human_tz = local_time_tzoffset(now.tv_sec, &human_tm);
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}
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if (mode->local)
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tz = local_tzoffset(time);
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if (mode->type == DATE_RAW) {
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strbuf_reset(&timebuf);
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strbuf_addf(&timebuf, "%"PRItime" %+05d", time, tz);
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return timebuf.buf;
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}
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if (mode->type == DATE_RELATIVE) {
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strbuf_reset(&timebuf);
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show_date_relative(time, &timebuf);
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return timebuf.buf;
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}
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if (mode->local)
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tm = time_to_tm_local(time, &tmbuf);
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else
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tm = time_to_tm(time, tz, &tmbuf);
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if (!tm) {
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tm = time_to_tm(0, 0, &tmbuf);
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tz = 0;
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}
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strbuf_reset(&timebuf);
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if (mode->type == DATE_SHORT)
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strbuf_addf(&timebuf, "%04d-%02d-%02d", tm->tm_year + 1900,
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tm->tm_mon + 1, tm->tm_mday);
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else if (mode->type == DATE_ISO8601)
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strbuf_addf(&timebuf, "%04d-%02d-%02d %02d:%02d:%02d %+05d",
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tm->tm_year + 1900,
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tm->tm_mon + 1,
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tm->tm_mday,
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tm->tm_hour, tm->tm_min, tm->tm_sec,
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tz);
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else if (mode->type == DATE_ISO8601_STRICT) {
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char sign = (tz >= 0) ? '+' : '-';
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tz = abs(tz);
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strbuf_addf(&timebuf, "%04d-%02d-%02dT%02d:%02d:%02d%c%02d:%02d",
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tm->tm_year + 1900,
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tm->tm_mon + 1,
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tm->tm_mday,
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tm->tm_hour, tm->tm_min, tm->tm_sec,
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sign, tz / 100, tz % 100);
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} else if (mode->type == DATE_RFC2822)
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strbuf_addf(&timebuf, "%.3s, %d %.3s %d %02d:%02d:%02d %+05d",
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weekday_names[tm->tm_wday], tm->tm_mday,
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month_names[tm->tm_mon], tm->tm_year + 1900,
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tm->tm_hour, tm->tm_min, tm->tm_sec, tz);
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else if (mode->type == DATE_STRFTIME)
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strbuf_addftime(&timebuf, mode->strftime_fmt, tm, tz,
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!mode->local);
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else
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show_date_normal(&timebuf, time, tm, tz, &human_tm, human_tz, mode->local);
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return timebuf.buf;
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}
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/*
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* Check these. And note how it doesn't do the summer-time conversion.
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*
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* In my world, it's always summer, and things are probably a bit off
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* in other ways too.
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*/
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static const struct {
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const char *name;
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int offset;
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int dst;
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} timezone_names[] = {
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{ "IDLW", -12, 0, }, /* International Date Line West */
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{ "NT", -11, 0, }, /* Nome */
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{ "CAT", -10, 0, }, /* Central Alaska */
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{ "HST", -10, 0, }, /* Hawaii Standard */
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{ "HDT", -10, 1, }, /* Hawaii Daylight */
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{ "YST", -9, 0, }, /* Yukon Standard */
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{ "YDT", -9, 1, }, /* Yukon Daylight */
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{ "PST", -8, 0, }, /* Pacific Standard */
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{ "PDT", -8, 1, }, /* Pacific Daylight */
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{ "MST", -7, 0, }, /* Mountain Standard */
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{ "MDT", -7, 1, }, /* Mountain Daylight */
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{ "CST", -6, 0, }, /* Central Standard */
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{ "CDT", -6, 1, }, /* Central Daylight */
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{ "EST", -5, 0, }, /* Eastern Standard */
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{ "EDT", -5, 1, }, /* Eastern Daylight */
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{ "AST", -3, 0, }, /* Atlantic Standard */
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{ "ADT", -3, 1, }, /* Atlantic Daylight */
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{ "WAT", -1, 0, }, /* West Africa */
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{ "GMT", 0, 0, }, /* Greenwich Mean */
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{ "UTC", 0, 0, }, /* Universal (Coordinated) */
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{ "Z", 0, 0, }, /* Zulu, alias for UTC */
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{ "WET", 0, 0, }, /* Western European */
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{ "BST", 0, 1, }, /* British Summer */
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{ "CET", +1, 0, }, /* Central European */
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{ "MET", +1, 0, }, /* Middle European */
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{ "MEWT", +1, 0, }, /* Middle European Winter */
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{ "MEST", +1, 1, }, /* Middle European Summer */
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{ "CEST", +1, 1, }, /* Central European Summer */
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{ "MESZ", +1, 1, }, /* Middle European Summer */
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{ "FWT", +1, 0, }, /* French Winter */
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{ "FST", +1, 1, }, /* French Summer */
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{ "EET", +2, 0, }, /* Eastern Europe, USSR Zone 1 */
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{ "EEST", +2, 1, }, /* Eastern European Daylight */
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{ "WAST", +7, 0, }, /* West Australian Standard */
|
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{ "WADT", +7, 1, }, /* West Australian Daylight */
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{ "CCT", +8, 0, }, /* China Coast, USSR Zone 7 */
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{ "JST", +9, 0, }, /* Japan Standard, USSR Zone 8 */
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{ "EAST", +10, 0, }, /* Eastern Australian Standard */
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{ "EADT", +10, 1, }, /* Eastern Australian Daylight */
|
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{ "GST", +10, 0, }, /* Guam Standard, USSR Zone 9 */
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{ "NZT", +12, 0, }, /* New Zealand */
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{ "NZST", +12, 0, }, /* New Zealand Standard */
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{ "NZDT", +12, 1, }, /* New Zealand Daylight */
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{ "IDLE", +12, 0, }, /* International Date Line East */
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};
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|
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static int match_string(const char *date, const char *str)
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{
|
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int i = 0;
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|
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for (i = 0; *date; date++, str++, i++) {
|
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if (*date == *str)
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continue;
|
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if (toupper(*date) == toupper(*str))
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continue;
|
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if (!isalnum(*date))
|
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break;
|
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return 0;
|
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}
|
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return i;
|
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}
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|
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static int skip_alpha(const char *date)
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{
|
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int i = 0;
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do {
|
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i++;
|
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} while (isalpha(date[i]));
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return i;
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}
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|
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/*
|
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* Parse month, weekday, or timezone name
|
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*/
|
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static int match_alpha(const char *date, struct tm *tm, int *offset)
|
|
{
|
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int i;
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|
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for (i = 0; i < 12; i++) {
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int match = match_string(date, month_names[i]);
|
|
if (match >= 3) {
|
|
tm->tm_mon = i;
|
|
return match;
|
|
}
|
|
}
|
|
|
|
for (i = 0; i < 7; i++) {
|
|
int match = match_string(date, weekday_names[i]);
|
|
if (match >= 3) {
|
|
tm->tm_wday = i;
|
|
return match;
|
|
}
|
|
}
|
|
|
|
for (i = 0; i < ARRAY_SIZE(timezone_names); i++) {
|
|
int match = match_string(date, timezone_names[i].name);
|
|
if (match >= 3 || match == strlen(timezone_names[i].name)) {
|
|
int off = timezone_names[i].offset;
|
|
|
|
/* This is bogus, but we like summer */
|
|
off += timezone_names[i].dst;
|
|
|
|
/* Only use the tz name offset if we don't have anything better */
|
|
if (*offset == -1)
|
|
*offset = 60*off;
|
|
|
|
return match;
|
|
}
|
|
}
|
|
|
|
if (match_string(date, "PM") == 2) {
|
|
tm->tm_hour = (tm->tm_hour % 12) + 12;
|
|
return 2;
|
|
}
|
|
|
|
if (match_string(date, "AM") == 2) {
|
|
tm->tm_hour = (tm->tm_hour % 12) + 0;
|
|
return 2;
|
|
}
|
|
|
|
/* ISO-8601 allows yyyymmDD'T'HHMMSS, with less precision */
|
|
if (*date == 'T' && isdigit(date[1]) && tm->tm_hour == -1) {
|
|
tm->tm_min = tm->tm_sec = 0;
|
|
return 1;
|
|
}
|
|
|
|
/* BAD CRAP */
|
|
return skip_alpha(date);
|
|
}
|
|
|
|
static int set_date(int year, int month, int day, struct tm *now_tm, time_t now, struct tm *tm)
|
|
{
|
|
if (month > 0 && month < 13 && day > 0 && day < 32) {
|
|
struct tm check = *tm;
|
|
struct tm *r = (now_tm ? &check : tm);
|
|
time_t specified;
|
|
|
|
r->tm_mon = month - 1;
|
|
r->tm_mday = day;
|
|
if (year == -1) {
|
|
if (!now_tm)
|
|
return 1;
|
|
r->tm_year = now_tm->tm_year;
|
|
}
|
|
else if (year >= 1970 && year < 2100)
|
|
r->tm_year = year - 1900;
|
|
else if (year > 70 && year < 100)
|
|
r->tm_year = year;
|
|
else if (year < 38)
|
|
r->tm_year = year + 100;
|
|
else
|
|
return -1;
|
|
if (!now_tm)
|
|
return 0;
|
|
|
|
specified = tm_to_time_t(r);
|
|
|
|
/* Be it commit time or author time, it does not make
|
|
* sense to specify timestamp way into the future. Make
|
|
* sure it is not later than ten days from now...
|
|
*/
|
|
if ((specified != -1) && (now + 10*24*3600 < specified))
|
|
return -1;
|
|
tm->tm_mon = r->tm_mon;
|
|
tm->tm_mday = r->tm_mday;
|
|
if (year != -1)
|
|
tm->tm_year = r->tm_year;
|
|
return 0;
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
static int set_time(long hour, long minute, long second, struct tm *tm)
|
|
{
|
|
/* We accept 61st second because of leap second */
|
|
if (0 <= hour && hour <= 24 &&
|
|
0 <= minute && minute < 60 &&
|
|
0 <= second && second <= 60) {
|
|
tm->tm_hour = hour;
|
|
tm->tm_min = minute;
|
|
tm->tm_sec = second;
|
|
return 0;
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
static int is_date_known(struct tm *tm)
|
|
{
|
|
return tm->tm_year != -1 && tm->tm_mon != -1 && tm->tm_mday != -1;
|
|
}
|
|
|
|
static int match_multi_number(timestamp_t num, char c, const char *date,
|
|
char *end, struct tm *tm, time_t now)
|
|
{
|
|
struct tm now_tm;
|
|
struct tm *refuse_future;
|
|
long num2, num3;
|
|
|
|
num2 = strtol(end+1, &end, 10);
|
|
num3 = -1;
|
|
if (*end == c && isdigit(end[1]))
|
|
num3 = strtol(end+1, &end, 10);
|
|
|
|
/* Time? Date? */
|
|
switch (c) {
|
|
case ':':
|
|
if (num3 < 0)
|
|
num3 = 0;
|
|
if (set_time(num, num2, num3, tm) == 0) {
|
|
/*
|
|
* If %H:%M:%S was just parsed followed by: .<num4>
|
|
* Consider (& discard) it as fractional second
|
|
* if %Y%m%d is parsed before.
|
|
*/
|
|
if (*end == '.' && isdigit(end[1]) && is_date_known(tm))
|
|
strtol(end + 1, &end, 10);
|
|
break;
|
|
}
|
|
return 0;
|
|
|
|
case '-':
|
|
case '/':
|
|
case '.':
|
|
if (!now)
|
|
now = time(NULL);
|
|
refuse_future = NULL;
|
|
if (gmtime_r(&now, &now_tm))
|
|
refuse_future = &now_tm;
|
|
|
|
if (num > 70) {
|
|
/* yyyy-mm-dd? */
|
|
if (set_date(num, num2, num3, NULL, now, tm) == 0)
|
|
break;
|
|
/* yyyy-dd-mm? */
|
|
if (set_date(num, num3, num2, NULL, now, tm) == 0)
|
|
break;
|
|
}
|
|
/* Our eastern European friends say dd.mm.yy[yy]
|
|
* is the norm there, so giving precedence to
|
|
* mm/dd/yy[yy] form only when separator is not '.'
|
|
*/
|
|
if (c != '.' &&
|
|
set_date(num3, num, num2, refuse_future, now, tm) == 0)
|
|
break;
|
|
/* European dd.mm.yy[yy] or funny US dd/mm/yy[yy] */
|
|
if (set_date(num3, num2, num, refuse_future, now, tm) == 0)
|
|
break;
|
|
/* Funny European mm.dd.yy */
|
|
if (c == '.' &&
|
|
set_date(num3, num, num2, refuse_future, now, tm) == 0)
|
|
break;
|
|
return 0;
|
|
}
|
|
return end - date;
|
|
}
|
|
|
|
/*
|
|
* Have we filled in any part of the time/date yet?
|
|
* We just do a binary 'and' to see if the sign bit
|
|
* is set in all the values.
|
|
*/
|
|
static inline int nodate(struct tm *tm)
|
|
{
|
|
return (tm->tm_year &
|
|
tm->tm_mon &
|
|
tm->tm_mday &
|
|
tm->tm_hour &
|
|
tm->tm_min &
|
|
tm->tm_sec) < 0;
|
|
}
|
|
|
|
/*
|
|
* Have we seen an ISO-8601-alike date, i.e. 20220101T0,
|
|
* In which, hour is still unset,
|
|
* and minutes and second has been set to 0.
|
|
*/
|
|
static inline int maybeiso8601(struct tm *tm)
|
|
{
|
|
return tm->tm_hour == -1 &&
|
|
tm->tm_min == 0 &&
|
|
tm->tm_sec == 0;
|
|
}
|
|
|
|
/*
|
|
* We've seen a digit. Time? Year? Date?
|
|
*/
|
|
static int match_digit(const char *date, struct tm *tm, int *offset, int *tm_gmt)
|
|
{
|
|
int n;
|
|
char *end;
|
|
timestamp_t num;
|
|
|
|
num = parse_timestamp(date, &end, 10);
|
|
|
|
/*
|
|
* Seconds since 1970? We trigger on that for any numbers with
|
|
* more than 8 digits. This is because we don't want to rule out
|
|
* numbers like 20070606 as a YYYYMMDD date.
|
|
*/
|
|
if (num >= 100000000 && nodate(tm)) {
|
|
time_t time = num;
|
|
if (gmtime_r(&time, tm)) {
|
|
*tm_gmt = 1;
|
|
return end - date;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Check for special formats: num[-.:/]num[same]num
|
|
*/
|
|
switch (*end) {
|
|
case ':':
|
|
case '.':
|
|
case '/':
|
|
case '-':
|
|
if (isdigit(end[1])) {
|
|
int match = match_multi_number(num, *end, date, end, tm, 0);
|
|
if (match)
|
|
return match;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* None of the special formats? Try to guess what
|
|
* the number meant. We use the number of digits
|
|
* to make a more educated guess..
|
|
*/
|
|
n = 0;
|
|
do {
|
|
n++;
|
|
} while (isdigit(date[n]));
|
|
|
|
/* 8 digits, compact style of ISO-8601's date: YYYYmmDD */
|
|
/* 6 digits, compact style of ISO-8601's time: HHMMSS */
|
|
if (n == 8 || n == 6) {
|
|
unsigned int num1 = num / 10000;
|
|
unsigned int num2 = (num % 10000) / 100;
|
|
unsigned int num3 = num % 100;
|
|
if (n == 8)
|
|
set_date(num1, num2, num3, NULL, time(NULL), tm);
|
|
else if (n == 6 && set_time(num1, num2, num3, tm) == 0 &&
|
|
*end == '.' && isdigit(end[1]))
|
|
strtoul(end + 1, &end, 10);
|
|
return end - date;
|
|
}
|
|
|
|
/* reduced precision of ISO-8601's time: HHMM or HH */
|
|
if (maybeiso8601(tm)) {
|
|
unsigned int num1 = num;
|
|
unsigned int num2 = 0;
|
|
if (n == 4) {
|
|
num1 = num / 100;
|
|
num2 = num % 100;
|
|
}
|
|
if ((n == 4 || n == 2) && !nodate(tm) &&
|
|
set_time(num1, num2, 0, tm) == 0)
|
|
return n;
|
|
/*
|
|
* We thought this is an ISO-8601 time string,
|
|
* we set minutes and seconds to 0,
|
|
* turn out it isn't, rollback the change.
|
|
*/
|
|
tm->tm_min = tm->tm_sec = -1;
|
|
}
|
|
|
|
/* Four-digit year or a timezone? */
|
|
if (n == 4) {
|
|
if (num <= 1400 && *offset == -1) {
|
|
unsigned int minutes = num % 100;
|
|
unsigned int hours = num / 100;
|
|
*offset = hours*60 + minutes;
|
|
} else if (num > 1900 && num < 2100)
|
|
tm->tm_year = num - 1900;
|
|
return n;
|
|
}
|
|
|
|
/*
|
|
* Ignore lots of numerals. We took care of 4-digit years above.
|
|
* Days or months must be one or two digits.
|
|
*/
|
|
if (n > 2)
|
|
return n;
|
|
|
|
/*
|
|
* NOTE! We will give precedence to day-of-month over month or
|
|
* year numbers in the 1-12 range. So 05 is always "mday 5",
|
|
* unless we already have a mday..
|
|
*
|
|
* IOW, 01 Apr 05 parses as "April 1st, 2005".
|
|
*/
|
|
if (num > 0 && num < 32 && tm->tm_mday < 0) {
|
|
tm->tm_mday = num;
|
|
return n;
|
|
}
|
|
|
|
/* Two-digit year? */
|
|
if (n == 2 && tm->tm_year < 0) {
|
|
if (num < 10 && tm->tm_mday >= 0) {
|
|
tm->tm_year = num + 100;
|
|
return n;
|
|
}
|
|
if (num >= 70) {
|
|
tm->tm_year = num;
|
|
return n;
|
|
}
|
|
}
|
|
|
|
if (num > 0 && num < 13 && tm->tm_mon < 0)
|
|
tm->tm_mon = num-1;
|
|
|
|
return n;
|
|
}
|
|
|
|
static int match_tz(const char *date, int *offp)
|
|
{
|
|
char *end;
|
|
int hour = strtoul(date + 1, &end, 10);
|
|
int n = end - (date + 1);
|
|
int min = 0;
|
|
|
|
if (n == 4) {
|
|
/* hhmm */
|
|
min = hour % 100;
|
|
hour = hour / 100;
|
|
} else if (n != 2) {
|
|
min = 99; /* random crap */
|
|
} else if (*end == ':') {
|
|
/* hh:mm? */
|
|
min = strtoul(end + 1, &end, 10);
|
|
if (end - (date + 1) != 5)
|
|
min = 99; /* random crap */
|
|
} /* otherwise we parsed "hh" */
|
|
|
|
/*
|
|
* Don't accept any random crap. Even though some places have
|
|
* offset larger than 12 hours (e.g. Pacific/Kiritimati is at
|
|
* UTC+14), there is something wrong if hour part is much
|
|
* larger than that. We might also want to check that the
|
|
* minutes are divisible by 15 or something too. (Offset of
|
|
* Kathmandu, Nepal is UTC+5:45)
|
|
*/
|
|
if (min < 60 && hour < 24) {
|
|
int offset = hour * 60 + min;
|
|
if (*date == '-')
|
|
offset = -offset;
|
|
*offp = offset;
|
|
}
|
|
return end - date;
|
|
}
|
|
|
|
static void date_string(timestamp_t date, int offset, struct strbuf *buf)
|
|
{
|
|
int sign = '+';
|
|
|
|
if (offset < 0) {
|
|
offset = -offset;
|
|
sign = '-';
|
|
}
|
|
strbuf_addf(buf, "%"PRItime" %c%02d%02d", date, sign, offset / 60, offset % 60);
|
|
}
|
|
|
|
/*
|
|
* Parse a string like "0 +0000" as ancient timestamp near epoch, but
|
|
* only when it appears not as part of any other string.
|
|
*/
|
|
static int match_object_header_date(const char *date, timestamp_t *timestamp, int *offset)
|
|
{
|
|
char *end;
|
|
timestamp_t stamp;
|
|
int ofs;
|
|
|
|
if (*date < '0' || '9' < *date)
|
|
return -1;
|
|
stamp = parse_timestamp(date, &end, 10);
|
|
if (*end != ' ' || stamp == TIME_MAX || (end[1] != '+' && end[1] != '-'))
|
|
return -1;
|
|
date = end + 2;
|
|
ofs = strtol(date, &end, 10);
|
|
if ((*end != '\0' && (*end != '\n')) || end != date + 4)
|
|
return -1;
|
|
ofs = (ofs / 100) * 60 + (ofs % 100);
|
|
if (date[-1] == '-')
|
|
ofs = -ofs;
|
|
*timestamp = stamp;
|
|
*offset = ofs;
|
|
return 0;
|
|
}
|
|
|
|
/* Gr. strptime is crap for this; it doesn't have a way to require RFC2822
|
|
(i.e. English) day/month names, and it doesn't work correctly with %z. */
|
|
int parse_date_basic(const char *date, timestamp_t *timestamp, int *offset)
|
|
{
|
|
struct tm tm;
|
|
int tm_gmt;
|
|
timestamp_t dummy_timestamp;
|
|
int dummy_offset;
|
|
|
|
if (!timestamp)
|
|
timestamp = &dummy_timestamp;
|
|
if (!offset)
|
|
offset = &dummy_offset;
|
|
|
|
memset(&tm, 0, sizeof(tm));
|
|
tm.tm_year = -1;
|
|
tm.tm_mon = -1;
|
|
tm.tm_mday = -1;
|
|
tm.tm_isdst = -1;
|
|
tm.tm_hour = -1;
|
|
tm.tm_min = -1;
|
|
tm.tm_sec = -1;
|
|
*offset = -1;
|
|
tm_gmt = 0;
|
|
|
|
if (*date == '@' &&
|
|
!match_object_header_date(date + 1, timestamp, offset))
|
|
return 0; /* success */
|
|
for (;;) {
|
|
int match = 0;
|
|
unsigned char c = *date;
|
|
|
|
/* Stop at end of string or newline */
|
|
if (!c || c == '\n')
|
|
break;
|
|
|
|
if (isalpha(c))
|
|
match = match_alpha(date, &tm, offset);
|
|
else if (isdigit(c))
|
|
match = match_digit(date, &tm, offset, &tm_gmt);
|
|
else if ((c == '-' || c == '+') && isdigit(date[1]))
|
|
match = match_tz(date, offset);
|
|
|
|
if (!match) {
|
|
/* BAD CRAP */
|
|
match = 1;
|
|
}
|
|
|
|
date += match;
|
|
}
|
|
|
|
/* do not use mktime(), which uses local timezone, here */
|
|
*timestamp = tm_to_time_t(&tm);
|
|
if (*timestamp == -1)
|
|
return -1;
|
|
|
|
if (*offset == -1) {
|
|
time_t temp_time;
|
|
|
|
/* gmtime_r() in match_digit() may have clobbered it */
|
|
tm.tm_isdst = -1;
|
|
temp_time = mktime(&tm);
|
|
if ((time_t)*timestamp > temp_time) {
|
|
*offset = ((time_t)*timestamp - temp_time) / 60;
|
|
} else {
|
|
*offset = -(int)((temp_time - (time_t)*timestamp) / 60);
|
|
}
|
|
}
|
|
|
|
if (!tm_gmt)
|
|
*timestamp -= *offset * 60;
|
|
return 0; /* success */
|
|
}
|
|
|
|
int parse_expiry_date(const char *date, timestamp_t *timestamp)
|
|
{
|
|
int errors = 0;
|
|
|
|
if (!strcmp(date, "never") || !strcmp(date, "false"))
|
|
*timestamp = 0;
|
|
else if (!strcmp(date, "all") || !strcmp(date, "now"))
|
|
/*
|
|
* We take over "now" here, which usually translates
|
|
* to the current timestamp. This is because the user
|
|
* really means to expire everything that was done in
|
|
* the past, and by definition reflogs are the record
|
|
* of the past, and there is nothing from the future
|
|
* to be kept.
|
|
*/
|
|
*timestamp = TIME_MAX;
|
|
else
|
|
*timestamp = approxidate_careful(date, &errors);
|
|
|
|
return errors;
|
|
}
|
|
|
|
int parse_date(const char *date, struct strbuf *result)
|
|
{
|
|
timestamp_t timestamp;
|
|
int offset;
|
|
if (parse_date_basic(date, ×tamp, &offset))
|
|
return -1;
|
|
date_string(timestamp, offset, result);
|
|
return 0;
|
|
}
|
|
|
|
static enum date_mode_type parse_date_type(const char *format, const char **end)
|
|
{
|
|
if (skip_prefix(format, "relative", end))
|
|
return DATE_RELATIVE;
|
|
if (skip_prefix(format, "iso8601-strict", end) ||
|
|
skip_prefix(format, "iso-strict", end))
|
|
return DATE_ISO8601_STRICT;
|
|
if (skip_prefix(format, "iso8601", end) ||
|
|
skip_prefix(format, "iso", end))
|
|
return DATE_ISO8601;
|
|
if (skip_prefix(format, "rfc2822", end) ||
|
|
skip_prefix(format, "rfc", end))
|
|
return DATE_RFC2822;
|
|
if (skip_prefix(format, "short", end))
|
|
return DATE_SHORT;
|
|
if (skip_prefix(format, "default", end))
|
|
return DATE_NORMAL;
|
|
if (skip_prefix(format, "human", end))
|
|
return DATE_HUMAN;
|
|
if (skip_prefix(format, "raw", end))
|
|
return DATE_RAW;
|
|
if (skip_prefix(format, "unix", end))
|
|
return DATE_UNIX;
|
|
if (skip_prefix(format, "format", end))
|
|
return DATE_STRFTIME;
|
|
/*
|
|
* Please update $__git_log_date_formats in
|
|
* git-completion.bash when you add new formats.
|
|
*/
|
|
|
|
die("unknown date format %s", format);
|
|
}
|
|
|
|
void parse_date_format(const char *format, struct date_mode *mode)
|
|
{
|
|
const char *p;
|
|
|
|
/* "auto:foo" is "if tty/pager, then foo, otherwise normal" */
|
|
if (skip_prefix(format, "auto:", &p)) {
|
|
if (isatty(1) || pager_in_use())
|
|
format = p;
|
|
else
|
|
format = "default";
|
|
}
|
|
|
|
/* historical alias */
|
|
if (!strcmp(format, "local"))
|
|
format = "default-local";
|
|
|
|
mode->type = parse_date_type(format, &p);
|
|
mode->local = 0;
|
|
|
|
if (skip_prefix(p, "-local", &p))
|
|
mode->local = 1;
|
|
|
|
if (mode->type == DATE_STRFTIME) {
|
|
if (!skip_prefix(p, ":", &p))
|
|
die("date format missing colon separator: %s", format);
|
|
mode->strftime_fmt = xstrdup(p);
|
|
} else if (*p)
|
|
die("unknown date format %s", format);
|
|
}
|
|
|
|
void date_mode_release(struct date_mode *mode)
|
|
{
|
|
free((char *)mode->strftime_fmt);
|
|
}
|
|
|
|
void datestamp(struct strbuf *out)
|
|
{
|
|
time_t now;
|
|
int offset;
|
|
struct tm tm = { 0 };
|
|
|
|
time(&now);
|
|
|
|
offset = tm_to_time_t(localtime_r(&now, &tm)) - now;
|
|
offset /= 60;
|
|
|
|
date_string(now, offset, out);
|
|
}
|
|
|
|
/*
|
|
* Relative time update (eg "2 days ago"). If we haven't set the time
|
|
* yet, we need to set it from current time.
|
|
*/
|
|
static time_t update_tm(struct tm *tm, struct tm *now, time_t sec)
|
|
{
|
|
time_t n;
|
|
|
|
if (tm->tm_mday < 0)
|
|
tm->tm_mday = now->tm_mday;
|
|
if (tm->tm_mon < 0)
|
|
tm->tm_mon = now->tm_mon;
|
|
if (tm->tm_year < 0) {
|
|
tm->tm_year = now->tm_year;
|
|
if (tm->tm_mon > now->tm_mon)
|
|
tm->tm_year--;
|
|
}
|
|
|
|
n = mktime(tm) - sec;
|
|
localtime_r(&n, tm);
|
|
return n;
|
|
}
|
|
|
|
/*
|
|
* Do we have a pending number at the end, or when
|
|
* we see a new one? Let's assume it's a month day,
|
|
* as in "Dec 6, 1992"
|
|
*/
|
|
static void pending_number(struct tm *tm, int *num)
|
|
{
|
|
int number = *num;
|
|
|
|
if (number) {
|
|
*num = 0;
|
|
if (tm->tm_mday < 0 && number < 32)
|
|
tm->tm_mday = number;
|
|
else if (tm->tm_mon < 0 && number < 13)
|
|
tm->tm_mon = number-1;
|
|
else if (tm->tm_year < 0) {
|
|
if (number > 1969 && number < 2100)
|
|
tm->tm_year = number - 1900;
|
|
else if (number > 69 && number < 100)
|
|
tm->tm_year = number;
|
|
else if (number < 38)
|
|
tm->tm_year = 100 + number;
|
|
/* We screw up for number = 00 ? */
|
|
}
|
|
}
|
|
}
|
|
|
|
static void date_now(struct tm *tm, struct tm *now, int *num)
|
|
{
|
|
*num = 0;
|
|
update_tm(tm, now, 0);
|
|
}
|
|
|
|
static void date_yesterday(struct tm *tm, struct tm *now, int *num)
|
|
{
|
|
*num = 0;
|
|
update_tm(tm, now, 24*60*60);
|
|
}
|
|
|
|
static void date_time(struct tm *tm, struct tm *now, int hour)
|
|
{
|
|
if (tm->tm_hour < hour)
|
|
update_tm(tm, now, 24*60*60);
|
|
tm->tm_hour = hour;
|
|
tm->tm_min = 0;
|
|
tm->tm_sec = 0;
|
|
}
|
|
|
|
static void date_midnight(struct tm *tm, struct tm *now, int *num)
|
|
{
|
|
pending_number(tm, num);
|
|
date_time(tm, now, 0);
|
|
}
|
|
|
|
static void date_noon(struct tm *tm, struct tm *now, int *num)
|
|
{
|
|
pending_number(tm, num);
|
|
date_time(tm, now, 12);
|
|
}
|
|
|
|
static void date_tea(struct tm *tm, struct tm *now, int *num)
|
|
{
|
|
pending_number(tm, num);
|
|
date_time(tm, now, 17);
|
|
}
|
|
|
|
static void date_pm(struct tm *tm, struct tm *now UNUSED, int *num)
|
|
{
|
|
int hour, n = *num;
|
|
*num = 0;
|
|
|
|
hour = tm->tm_hour;
|
|
if (n) {
|
|
hour = n;
|
|
tm->tm_min = 0;
|
|
tm->tm_sec = 0;
|
|
}
|
|
tm->tm_hour = (hour % 12) + 12;
|
|
}
|
|
|
|
static void date_am(struct tm *tm, struct tm *now UNUSED, int *num)
|
|
{
|
|
int hour, n = *num;
|
|
*num = 0;
|
|
|
|
hour = tm->tm_hour;
|
|
if (n) {
|
|
hour = n;
|
|
tm->tm_min = 0;
|
|
tm->tm_sec = 0;
|
|
}
|
|
tm->tm_hour = (hour % 12);
|
|
}
|
|
|
|
static void date_never(struct tm *tm, struct tm *now UNUSED, int *num)
|
|
{
|
|
time_t n = 0;
|
|
localtime_r(&n, tm);
|
|
*num = 0;
|
|
}
|
|
|
|
static const struct special {
|
|
const char *name;
|
|
void (*fn)(struct tm *, struct tm *, int *);
|
|
} special[] = {
|
|
{ "yesterday", date_yesterday },
|
|
{ "noon", date_noon },
|
|
{ "midnight", date_midnight },
|
|
{ "tea", date_tea },
|
|
{ "PM", date_pm },
|
|
{ "AM", date_am },
|
|
{ "never", date_never },
|
|
{ "now", date_now },
|
|
{ NULL }
|
|
};
|
|
|
|
static const char *number_name[] = {
|
|
"zero", "one", "two", "three", "four",
|
|
"five", "six", "seven", "eight", "nine", "ten",
|
|
};
|
|
|
|
static const struct typelen {
|
|
const char *type;
|
|
int length;
|
|
} typelen[] = {
|
|
{ "seconds", 1 },
|
|
{ "minutes", 60 },
|
|
{ "hours", 60*60 },
|
|
{ "days", 24*60*60 },
|
|
{ "weeks", 7*24*60*60 },
|
|
{ NULL }
|
|
};
|
|
|
|
static const char *approxidate_alpha(const char *date, struct tm *tm, struct tm *now, int *num, int *touched)
|
|
{
|
|
const struct typelen *tl;
|
|
const struct special *s;
|
|
const char *end = date;
|
|
int i;
|
|
|
|
while (isalpha(*++end))
|
|
;
|
|
|
|
for (i = 0; i < 12; i++) {
|
|
int match = match_string(date, month_names[i]);
|
|
if (match >= 3) {
|
|
tm->tm_mon = i;
|
|
*touched = 1;
|
|
return end;
|
|
}
|
|
}
|
|
|
|
for (s = special; s->name; s++) {
|
|
int len = strlen(s->name);
|
|
if (match_string(date, s->name) == len) {
|
|
s->fn(tm, now, num);
|
|
*touched = 1;
|
|
return end;
|
|
}
|
|
}
|
|
|
|
if (!*num) {
|
|
for (i = 1; i < 11; i++) {
|
|
int len = strlen(number_name[i]);
|
|
if (match_string(date, number_name[i]) == len) {
|
|
*num = i;
|
|
*touched = 1;
|
|
return end;
|
|
}
|
|
}
|
|
if (match_string(date, "last") == 4) {
|
|
*num = 1;
|
|
*touched = 1;
|
|
}
|
|
return end;
|
|
}
|
|
|
|
tl = typelen;
|
|
while (tl->type) {
|
|
int len = strlen(tl->type);
|
|
if (match_string(date, tl->type) >= len-1) {
|
|
update_tm(tm, now, tl->length * *num);
|
|
*num = 0;
|
|
*touched = 1;
|
|
return end;
|
|
}
|
|
tl++;
|
|
}
|
|
|
|
for (i = 0; i < 7; i++) {
|
|
int match = match_string(date, weekday_names[i]);
|
|
if (match >= 3) {
|
|
int diff, n = *num -1;
|
|
*num = 0;
|
|
|
|
diff = tm->tm_wday - i;
|
|
if (diff <= 0)
|
|
n++;
|
|
diff += 7*n;
|
|
|
|
update_tm(tm, now, diff * 24 * 60 * 60);
|
|
*touched = 1;
|
|
return end;
|
|
}
|
|
}
|
|
|
|
if (match_string(date, "months") >= 5) {
|
|
int n;
|
|
update_tm(tm, now, 0); /* fill in date fields if needed */
|
|
n = tm->tm_mon - *num;
|
|
*num = 0;
|
|
while (n < 0) {
|
|
n += 12;
|
|
tm->tm_year--;
|
|
}
|
|
tm->tm_mon = n;
|
|
*touched = 1;
|
|
return end;
|
|
}
|
|
|
|
if (match_string(date, "years") >= 4) {
|
|
update_tm(tm, now, 0); /* fill in date fields if needed */
|
|
tm->tm_year -= *num;
|
|
*num = 0;
|
|
*touched = 1;
|
|
return end;
|
|
}
|
|
|
|
return end;
|
|
}
|
|
|
|
static const char *approxidate_digit(const char *date, struct tm *tm, int *num,
|
|
time_t now)
|
|
{
|
|
char *end;
|
|
timestamp_t number = parse_timestamp(date, &end, 10);
|
|
|
|
switch (*end) {
|
|
case ':':
|
|
case '.':
|
|
case '/':
|
|
case '-':
|
|
if (isdigit(end[1])) {
|
|
int match = match_multi_number(number, *end, date, end,
|
|
tm, now);
|
|
if (match)
|
|
return date + match;
|
|
}
|
|
}
|
|
|
|
/* Accept zero-padding only for small numbers ("Dec 02", never "Dec 0002") */
|
|
if (date[0] != '0' || end - date <= 2)
|
|
*num = number;
|
|
return end;
|
|
}
|
|
|
|
static timestamp_t approxidate_str(const char *date,
|
|
const struct timeval *tv,
|
|
int *error_ret)
|
|
{
|
|
int number = 0;
|
|
int touched = 0;
|
|
struct tm tm, now;
|
|
time_t time_sec;
|
|
|
|
time_sec = tv->tv_sec;
|
|
localtime_r(&time_sec, &tm);
|
|
now = tm;
|
|
|
|
tm.tm_year = -1;
|
|
tm.tm_mon = -1;
|
|
tm.tm_mday = -1;
|
|
|
|
for (;;) {
|
|
unsigned char c = *date;
|
|
if (!c)
|
|
break;
|
|
date++;
|
|
if (isdigit(c)) {
|
|
pending_number(&tm, &number);
|
|
date = approxidate_digit(date-1, &tm, &number, time_sec);
|
|
touched = 1;
|
|
continue;
|
|
}
|
|
if (isalpha(c))
|
|
date = approxidate_alpha(date-1, &tm, &now, &number, &touched);
|
|
}
|
|
pending_number(&tm, &number);
|
|
if (!touched)
|
|
*error_ret = 1;
|
|
return (timestamp_t)update_tm(&tm, &now, 0);
|
|
}
|
|
|
|
timestamp_t approxidate_careful(const char *date, int *error_ret)
|
|
{
|
|
struct timeval tv;
|
|
timestamp_t timestamp;
|
|
int offset;
|
|
int dummy = 0;
|
|
if (!error_ret)
|
|
error_ret = &dummy;
|
|
|
|
if (!parse_date_basic(date, ×tamp, &offset)) {
|
|
*error_ret = 0;
|
|
return timestamp;
|
|
}
|
|
|
|
get_time(&tv);
|
|
return approxidate_str(date, &tv, error_ret);
|
|
}
|
|
|
|
int date_overflows(timestamp_t t)
|
|
{
|
|
time_t sys;
|
|
|
|
/* If we overflowed our timestamp data type, that's bad... */
|
|
if ((uintmax_t)t >= TIME_MAX)
|
|
return 1;
|
|
|
|
/*
|
|
* ...but we also are going to feed the result to system
|
|
* functions that expect time_t, which is often "signed long".
|
|
* Make sure that we fit into time_t, as well.
|
|
*/
|
|
sys = t;
|
|
return t != sys || (t < 1) != (sys < 1);
|
|
}
|