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-rw-r--r--date.c190
1 files changed, 131 insertions, 59 deletions
diff --git a/date.c b/date.c
index b0d9a84..7365a4a 100644
--- a/date.c
+++ b/date.c
@@ -4,12 +4,16 @@
* Copyright (C) Linus Torvalds, 2005
*/
-#include "cache.h"
+#include "git-compat-util.h"
+#include "date.h"
+#include "gettext.h"
+#include "pager.h"
+#include "strbuf.h"
/*
* This is like mktime, but without normalization of tm_wday and tm_yday.
*/
-static time_t tm_to_time_t(const struct tm *tm)
+time_t tm_to_time_t(const struct tm *tm)
{
static const int mdays[] = {
0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334
@@ -203,14 +207,13 @@ void show_date_relative(timestamp_t time, struct strbuf *timebuf)
(diff + 183) / 365);
}
-struct date_mode *date_mode_from_type(enum date_mode_type type)
+struct date_mode date_mode_from_type(enum date_mode_type type)
{
- static struct date_mode mode;
+ struct date_mode mode = DATE_MODE_INIT;
if (type == DATE_STRFTIME)
BUG("cannot create anonymous strftime date_mode struct");
mode.type = type;
- mode.local = 0;
- return &mode;
+ return mode;
}
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)
@@ -280,7 +283,7 @@ static void show_date_normal(struct strbuf *buf, timestamp_t time, struct tm *tm
strbuf_addf(buf, " %+05d", tz);
}
-const char *show_date(timestamp_t time, int tz, const struct date_mode *mode)
+const char *show_date(timestamp_t time, int tz, struct date_mode mode)
{
struct tm *tm;
struct tm tmbuf = { 0 };
@@ -288,13 +291,13 @@ const char *show_date(timestamp_t time, int tz, const struct date_mode *mode)
int human_tz = -1;
static struct strbuf timebuf = STRBUF_INIT;
- if (mode->type == DATE_UNIX) {
+ if (mode.type == DATE_UNIX) {
strbuf_reset(&timebuf);
strbuf_addf(&timebuf, "%"PRItime, time);
return timebuf.buf;
}
- if (mode->type == DATE_HUMAN) {
+ if (mode.type == DATE_HUMAN) {
struct timeval now;
get_time(&now);
@@ -303,22 +306,22 @@ const char *show_date(timestamp_t time, int tz, const struct date_mode *mode)
human_tz = local_time_tzoffset(now.tv_sec, &human_tm);
}
- if (mode->local)
+ if (mode.local)
tz = local_tzoffset(time);
- if (mode->type == DATE_RAW) {
+ if (mode.type == DATE_RAW) {
strbuf_reset(&timebuf);
strbuf_addf(&timebuf, "%"PRItime" %+05d", time, tz);
return timebuf.buf;
}
- if (mode->type == DATE_RELATIVE) {
+ if (mode.type == DATE_RELATIVE) {
strbuf_reset(&timebuf);
show_date_relative(time, &timebuf);
return timebuf.buf;
}
- if (mode->local)
+ if (mode.local)
tm = time_to_tm_local(time, &tmbuf);
else
tm = time_to_tm(time, tz, &tmbuf);
@@ -328,35 +331,39 @@ const char *show_date(timestamp_t time, int tz, const struct date_mode *mode)
}
strbuf_reset(&timebuf);
- if (mode->type == DATE_SHORT)
+ if (mode.type == DATE_SHORT)
strbuf_addf(&timebuf, "%04d-%02d-%02d", tm->tm_year + 1900,
tm->tm_mon + 1, tm->tm_mday);
- else if (mode->type == DATE_ISO8601)
+ else if (mode.type == DATE_ISO8601)
strbuf_addf(&timebuf, "%04d-%02d-%02d %02d:%02d:%02d %+05d",
tm->tm_year + 1900,
tm->tm_mon + 1,
tm->tm_mday,
tm->tm_hour, tm->tm_min, tm->tm_sec,
tz);
- else if (mode->type == DATE_ISO8601_STRICT) {
- char sign = (tz >= 0) ? '+' : '-';
- tz = abs(tz);
- strbuf_addf(&timebuf, "%04d-%02d-%02dT%02d:%02d:%02d%c%02d:%02d",
+ else if (mode.type == DATE_ISO8601_STRICT) {
+ strbuf_addf(&timebuf, "%04d-%02d-%02dT%02d:%02d:%02d",
tm->tm_year + 1900,
tm->tm_mon + 1,
tm->tm_mday,
- tm->tm_hour, tm->tm_min, tm->tm_sec,
- sign, tz / 100, tz % 100);
- } else if (mode->type == DATE_RFC2822)
+ tm->tm_hour, tm->tm_min, tm->tm_sec);
+ if (tz == 0) {
+ strbuf_addch(&timebuf, 'Z');
+ } else {
+ strbuf_addch(&timebuf, tz >= 0 ? '+' : '-');
+ tz = abs(tz);
+ strbuf_addf(&timebuf, "%02d:%02d", tz / 100, tz % 100);
+ }
+ } else if (mode.type == DATE_RFC2822)
strbuf_addf(&timebuf, "%.3s, %d %.3s %d %02d:%02d:%02d %+05d",
weekday_names[tm->tm_wday], tm->tm_mday,
month_names[tm->tm_mon], tm->tm_year + 1900,
tm->tm_hour, tm->tm_min, tm->tm_sec, tz);
- else if (mode->type == DATE_STRFTIME)
- strbuf_addftime(&timebuf, mode->strftime_fmt, tm, tz,
- !mode->local);
+ else if (mode.type == DATE_STRFTIME)
+ strbuf_addftime(&timebuf, mode.strftime_fmt, tm, tz,
+ !mode.local);
else
- show_date_normal(&timebuf, time, tm, tz, &human_tm, human_tz, mode->local);
+ show_date_normal(&timebuf, time, tm, tz, &human_tm, human_tz, mode.local);
return timebuf.buf;
}
@@ -493,11 +500,17 @@ static int match_alpha(const char *date, struct tm *tm, int *offset)
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 is_date(int year, int month, int day, struct tm *now_tm, time_t now, struct tm *tm)
+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;
@@ -518,9 +531,9 @@ static int is_date(int year, int month, int day, struct tm *now_tm, time_t now,
else if (year < 38)
r->tm_year = year + 100;
else
- return 0;
+ return -1;
if (!now_tm)
- return 1;
+ return 0;
specified = tm_to_time_t(r);
@@ -529,14 +542,33 @@ static int is_date(int year, int month, int day, struct tm *now_tm, time_t now,
* sure it is not later than ten days from now...
*/
if ((specified != -1) && (now + 10*24*3600 < specified))
- return 0;
+ return -1;
tm->tm_mon = r->tm_mon;
tm->tm_mday = r->tm_mday;
if (year != -1)
tm->tm_year = r->tm_year;
- return 1;
+ return 0;
}
- 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,
@@ -556,10 +588,14 @@ static int match_multi_number(timestamp_t num, char c, const char *date,
case ':':
if (num3 < 0)
num3 = 0;
- if (num < 25 && num2 >= 0 && num2 < 60 && num3 >= 0 && num3 <= 60) {
- tm->tm_hour = num;
- tm->tm_min = num2;
- tm->tm_sec = num3;
+ 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;
@@ -575,10 +611,10 @@ static int match_multi_number(timestamp_t num, char c, const char *date,
if (num > 70) {
/* yyyy-mm-dd? */
- if (is_date(num, num2, num3, NULL, now, tm))
+ if (set_date(num, num2, num3, NULL, now, tm) == 0)
break;
/* yyyy-dd-mm? */
- if (is_date(num, num3, num2, NULL, now, tm))
+ if (set_date(num, num3, num2, NULL, now, tm) == 0)
break;
}
/* Our eastern European friends say dd.mm.yy[yy]
@@ -586,14 +622,14 @@ static int match_multi_number(timestamp_t num, char c, const char *date,
* mm/dd/yy[yy] form only when separator is not '.'
*/
if (c != '.' &&
- is_date(num3, num, num2, refuse_future, now, tm))
+ set_date(num3, num, num2, refuse_future, now, tm) == 0)
break;
/* European dd.mm.yy[yy] or funny US dd/mm/yy[yy] */
- if (is_date(num3, num2, num, refuse_future, now, tm))
+ if (set_date(num3, num2, num, refuse_future, now, tm) == 0)
break;
/* Funny European mm.dd.yy */
if (c == '.' &&
- is_date(num3, num, num2, refuse_future, now, tm))
+ set_date(num3, num, num2, refuse_future, now, tm) == 0)
break;
return 0;
}
@@ -616,6 +652,18 @@ static inline int nodate(struct tm *tm)
}
/*
+ * 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)
@@ -664,6 +712,39 @@ static int match_digit(const char *date, struct tm *tm, int *offset, int *tm_gmt
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) {
@@ -871,7 +952,7 @@ int parse_expiry_date(const char *date, timestamp_t *timestamp)
/*
* We take over "now" here, which usually translates
* to the current timestamp. This is because the user
- * really means to expire everything she has done in
+ * 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.
@@ -956,6 +1037,11 @@ void parse_date_format(const char *format, struct date_mode *mode)
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;
@@ -1059,7 +1145,7 @@ static void date_tea(struct tm *tm, struct tm *now, int *num)
date_time(tm, now, 17);
}
-static void date_pm(struct tm *tm, struct tm *now, int *num)
+static void date_pm(struct tm *tm, struct tm *now UNUSED, int *num)
{
int hour, n = *num;
*num = 0;
@@ -1073,7 +1159,7 @@ static void date_pm(struct tm *tm, struct tm *now, int *num)
tm->tm_hour = (hour % 12) + 12;
}
-static void date_am(struct tm *tm, struct tm *now, int *num)
+static void date_am(struct tm *tm, struct tm *now UNUSED, int *num)
{
int hour, n = *num;
*num = 0;
@@ -1087,7 +1173,7 @@ static void date_am(struct tm *tm, struct tm *now, int *num)
tm->tm_hour = (hour % 12);
}
-static void date_never(struct tm *tm, struct tm *now, int *num)
+static void date_never(struct tm *tm, struct tm *now UNUSED, int *num)
{
time_t n = 0;
localtime_r(&n, tm);
@@ -1286,20 +1372,6 @@ static timestamp_t approxidate_str(const char *date,
return (timestamp_t)update_tm(&tm, &now, 0);
}
-timestamp_t approxidate_relative(const char *date)
-{
- struct timeval tv;
- timestamp_t timestamp;
- int offset;
- int errors = 0;
-
- if (!parse_date_basic(date, &timestamp, &offset))
- return timestamp;
-
- get_time(&tv);
- return approxidate_str(date, (const struct timeval *) &tv, &errors);
-}
-
timestamp_t approxidate_careful(const char *date, int *error_ret)
{
struct timeval tv;
generated by cgit v0.10.2-6-g49f6 at 2024-04-27 02:46:00 (GMT)