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-rw-r--r--date.c205
1 files changed, 131 insertions, 74 deletions
diff --git a/date.c b/date.c
index 733d1b29b1..63fa99685e 100644
--- a/date.c
+++ b/date.c
@@ -39,14 +39,24 @@ static const char *weekday_names[] = {
"Sundays", "Mondays", "Tuesdays", "Wednesdays", "Thursdays", "Fridays", "Saturdays"
};
-static time_t gm_time_t(unsigned long time, int tz)
+static time_t gm_time_t(timestamp_t time, int tz)
{
int minutes;
minutes = tz < 0 ? -tz : tz;
minutes = (minutes / 100)*60 + (minutes % 100);
minutes = tz < 0 ? -minutes : minutes;
- return time + minutes * 60;
+
+ if (minutes > 0) {
+ if (unsigned_add_overflows(time, minutes * 60))
+ die("Timestamp+tz too large: %"PRItime" +%04d",
+ time, tz);
+ } else if (time < -minutes * 60)
+ die("Timestamp before Unix epoch: %"PRItime" %04d", time, tz);
+ time += minutes * 60;
+ if (date_overflows(time))
+ die("Timestamp too large for this system: %"PRItime, time);
+ return (time_t)time;
}
/*
@@ -54,7 +64,7 @@ static time_t gm_time_t(unsigned long time, int tz)
* thing, which means that tz -0100 is passed in as the integer -100,
* even though it means "sixty minutes off"
*/
-static struct tm *time_to_tm(unsigned long time, int tz)
+static struct tm *time_to_tm(timestamp_t time, int tz)
{
time_t t = gm_time_t(time, tz);
return gmtime(&t);
@@ -64,16 +74,21 @@ static struct tm *time_to_tm(unsigned long time, int tz)
* What value of "tz" was in effect back then at "time" in the
* local timezone?
*/
-static int local_tzoffset(unsigned long time)
+static int local_tzoffset(timestamp_t time)
{
time_t t, t_local;
struct tm tm;
int offset, eastwest;
- t = time;
+ if (date_overflows(time))
+ die("Timestamp too large for this system: %"PRItime, time);
+
+ t = (time_t)time;
localtime_r(&t, &tm);
t_local = tm_to_time_t(&tm);
+ if (t_local == -1)
+ return 0; /* error; just use +0000 */
if (t_local < t) {
eastwest = -1;
offset = t - t_local;
@@ -86,11 +101,11 @@ static int local_tzoffset(unsigned long time)
return offset * eastwest;
}
-void show_date_relative(unsigned long time, int tz,
+void show_date_relative(timestamp_t time, int tz,
const struct timeval *now,
struct strbuf *timebuf)
{
- unsigned long diff;
+ timestamp_t diff;
if (now->tv_sec < time) {
strbuf_addstr(timebuf, _("in the future"));
return;
@@ -98,80 +113,99 @@ void show_date_relative(unsigned long time, int tz,
diff = now->tv_sec - time;
if (diff < 90) {
strbuf_addf(timebuf,
- Q_("%lu second ago", "%lu seconds ago", diff), diff);
+ Q_("%"PRItime" second ago", "%"PRItime" seconds ago", diff), diff);
return;
}
/* Turn it into minutes */
diff = (diff + 30) / 60;
if (diff < 90) {
strbuf_addf(timebuf,
- Q_("%lu minute ago", "%lu minutes ago", diff), diff);
+ Q_("%"PRItime" minute ago", "%"PRItime" minutes ago", diff), diff);
return;
}
/* Turn it into hours */
diff = (diff + 30) / 60;
if (diff < 36) {
strbuf_addf(timebuf,
- Q_("%lu hour ago", "%lu hours ago", diff), diff);
+ Q_("%"PRItime" hour ago", "%"PRItime" hours ago", diff), diff);
return;
}
/* We deal with number of days from here on */
diff = (diff + 12) / 24;
if (diff < 14) {
strbuf_addf(timebuf,
- Q_("%lu day ago", "%lu days ago", diff), diff);
+ Q_("%"PRItime" day ago", "%"PRItime" days ago", diff), diff);
return;
}
/* Say weeks for the past 10 weeks or so */
if (diff < 70) {
strbuf_addf(timebuf,
- Q_("%lu week ago", "%lu weeks ago", (diff + 3) / 7),
+ Q_("%"PRItime" week ago", "%"PRItime" weeks ago", (diff + 3) / 7),
(diff + 3) / 7);
return;
}
/* Say months for the past 12 months or so */
if (diff < 365) {
strbuf_addf(timebuf,
- Q_("%lu month ago", "%lu months ago", (diff + 15) / 30),
+ Q_("%"PRItime" month ago", "%"PRItime" months ago", (diff + 15) / 30),
(diff + 15) / 30);
return;
}
/* Give years and months for 5 years or so */
if (diff < 1825) {
- unsigned long totalmonths = (diff * 12 * 2 + 365) / (365 * 2);
- unsigned long years = totalmonths / 12;
- unsigned long months = totalmonths % 12;
+ timestamp_t totalmonths = (diff * 12 * 2 + 365) / (365 * 2);
+ timestamp_t years = totalmonths / 12;
+ timestamp_t months = totalmonths % 12;
if (months) {
struct strbuf sb = STRBUF_INIT;
- strbuf_addf(&sb, Q_("%lu year", "%lu years", years), years);
+ strbuf_addf(&sb, Q_("%"PRItime" year", "%"PRItime" years", years), years);
strbuf_addf(timebuf,
/* TRANSLATORS: "%s" is "<n> years" */
- Q_("%s, %lu month ago", "%s, %lu months ago", months),
+ Q_("%s, %"PRItime" month ago", "%s, %"PRItime" months ago", months),
sb.buf, months);
strbuf_release(&sb);
} else
strbuf_addf(timebuf,
- Q_("%lu year ago", "%lu years ago", years), years);
+ Q_("%"PRItime" year ago", "%"PRItime" years ago", years), years);
return;
}
/* Otherwise, just years. Centuries is probably overkill. */
strbuf_addf(timebuf,
- Q_("%lu year ago", "%lu years ago", (diff + 183) / 365),
+ Q_("%"PRItime" year ago", "%"PRItime" years ago", (diff + 183) / 365),
(diff + 183) / 365);
}
-const char *show_date(unsigned long time, int tz, enum date_mode mode)
+struct date_mode *date_mode_from_type(enum date_mode_type type)
+{
+ static struct date_mode mode;
+ if (type == DATE_STRFTIME)
+ die("BUG: cannot create anonymous strftime date_mode struct");
+ mode.type = type;
+ mode.local = 0;
+ return &mode;
+}
+
+const char *show_date(timestamp_t time, int tz, const struct date_mode *mode)
{
struct tm *tm;
static struct strbuf timebuf = STRBUF_INIT;
- if (mode == DATE_RAW) {
+ if (mode->type == DATE_UNIX) {
+ strbuf_reset(&timebuf);
+ strbuf_addf(&timebuf, "%"PRItime, time);
+ return timebuf.buf;
+ }
+
+ if (mode->local)
+ tz = local_tzoffset(time);
+
+ if (mode->type == DATE_RAW) {
strbuf_reset(&timebuf);
- strbuf_addf(&timebuf, "%lu %+05d", time, tz);
+ strbuf_addf(&timebuf, "%"PRItime" %+05d", time, tz);
return timebuf.buf;
}
- if (mode == DATE_RELATIVE) {
+ if (mode->type == DATE_RELATIVE) {
struct timeval now;
strbuf_reset(&timebuf);
@@ -180,9 +214,6 @@ const char *show_date(unsigned long time, int tz, enum date_mode mode)
return timebuf.buf;
}
- if (mode == DATE_LOCAL)
- tz = local_tzoffset(time);
-
tm = time_to_tm(time, tz);
if (!tm) {
tm = time_to_tm(0, 0);
@@ -190,17 +221,17 @@ const char *show_date(unsigned long time, int tz, enum date_mode mode)
}
strbuf_reset(&timebuf);
- if (mode == 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 == 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 == DATE_ISO8601_STRICT) {
+ 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",
@@ -209,11 +240,13 @@ const char *show_date(unsigned long time, int tz, enum date_mode mode)
tm->tm_mday,
tm->tm_hour, tm->tm_min, tm->tm_sec,
sign, tz / 100, tz % 100);
- } else if (mode == DATE_RFC2822)
+ } 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);
else
strbuf_addf(&timebuf, "%.3s %.3s %d %02d:%02d:%02d %d%c%+05d",
weekday_names[tm->tm_wday],
@@ -221,7 +254,7 @@ const char *show_date(unsigned long time, int tz, enum date_mode mode)
tm->tm_mday,
tm->tm_hour, tm->tm_min, tm->tm_sec,
tm->tm_year + 1900,
- (mode == DATE_LOCAL) ? 0 : ' ',
+ mode->local ? 0 : ' ',
tz);
return timebuf.buf;
}
@@ -405,7 +438,7 @@ static int is_date(int year, int month, int day, struct tm *now_tm, time_t now,
return 0;
}
-static int match_multi_number(unsigned long num, char c, const char *date,
+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;
@@ -488,9 +521,9 @@ static int match_digit(const char *date, struct tm *tm, int *offset, int *tm_gmt
{
int n;
char *end;
- unsigned long num;
+ timestamp_t num;
- num = strtoul(date, &end, 10);
+ num = parse_timestamp(date, &end, 10);
/*
* Seconds since 1970? We trigger on that for any numbers with
@@ -615,7 +648,7 @@ static int match_tz(const char *date, int *offp)
return end - date;
}
-static void date_string(unsigned long date, int offset, struct strbuf *buf)
+static void date_string(timestamp_t date, int offset, struct strbuf *buf)
{
int sign = '+';
@@ -623,23 +656,23 @@ static void date_string(unsigned long date, int offset, struct strbuf *buf)
offset = -offset;
sign = '-';
}
- strbuf_addf(buf, "%lu %c%02d%02d", date, sign, offset / 60, offset % 60);
+ 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, unsigned long *timestamp, int *offset)
+static int match_object_header_date(const char *date, timestamp_t *timestamp, int *offset)
{
char *end;
- unsigned long stamp;
+ timestamp_t stamp;
int ofs;
if (*date < '0' || '9' < *date)
return -1;
- stamp = strtoul(date, &end, 10);
- if (*end != ' ' || stamp == ULONG_MAX || (end[1] != '+' && end[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);
@@ -655,11 +688,11 @@ static int match_object_header_date(const char *date, unsigned long *timestamp,
/* 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, unsigned long *timestamp, int *offset)
+int parse_date_basic(const char *date, timestamp_t *timestamp, int *offset)
{
struct tm tm;
int tm_gmt;
- unsigned long dummy_timestamp;
+ timestamp_t dummy_timestamp;
int dummy_offset;
if (!timestamp)
@@ -727,7 +760,7 @@ int parse_date_basic(const char *date, unsigned long *timestamp, int *offset)
return 0; /* success */
}
-int parse_expiry_date(const char *date, unsigned long *timestamp)
+int parse_expiry_date(const char *date, timestamp_t *timestamp)
{
int errors = 0;
@@ -742,7 +775,7 @@ int parse_expiry_date(const char *date, unsigned long *timestamp)
* of the past, and there is nothing from the future
* to be kept.
*/
- *timestamp = ULONG_MAX;
+ *timestamp = TIME_MAX;
else
*timestamp = approxidate_careful(date, &errors);
@@ -751,7 +784,7 @@ int parse_expiry_date(const char *date, unsigned long *timestamp)
int parse_date(const char *date, struct strbuf *result)
{
- unsigned long timestamp;
+ timestamp_t timestamp;
int offset;
if (parse_date_basic(date, &timestamp, &offset))
return -1;
@@ -759,28 +792,52 @@ int parse_date(const char *date, struct strbuf *result)
return 0;
}
-enum date_mode parse_date_format(const char *format)
+static enum date_mode_type parse_date_type(const char *format, const char **end)
{
- if (!strcmp(format, "relative"))
+ if (skip_prefix(format, "relative", end))
return DATE_RELATIVE;
- else if (!strcmp(format, "iso8601") ||
- !strcmp(format, "iso"))
- return DATE_ISO8601;
- else if (!strcmp(format, "iso8601-strict") ||
- !strcmp(format, "iso-strict"))
+ if (skip_prefix(format, "iso8601-strict", end) ||
+ skip_prefix(format, "iso-strict", end))
return DATE_ISO8601_STRICT;
- else if (!strcmp(format, "rfc2822") ||
- !strcmp(format, "rfc"))
+ 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;
- else if (!strcmp(format, "short"))
+ if (skip_prefix(format, "short", end))
return DATE_SHORT;
- else if (!strcmp(format, "local"))
- return DATE_LOCAL;
- else if (!strcmp(format, "default"))
+ if (skip_prefix(format, "default", end))
return DATE_NORMAL;
- else if (!strcmp(format, "raw"))
+ if (skip_prefix(format, "raw", end))
return DATE_RAW;
- else
+ if (skip_prefix(format, "unix", end))
+ return DATE_UNIX;
+ if (skip_prefix(format, "format", end))
+ return DATE_STRFTIME;
+
+ die("unknown date format %s", format);
+}
+
+void parse_date_format(const char *format, struct date_mode *mode)
+{
+ const char *p;
+
+ /* 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);
}
@@ -801,7 +858,7 @@ void datestamp(struct strbuf *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 unsigned long update_tm(struct tm *tm, struct tm *now, unsigned long sec)
+static time_t update_tm(struct tm *tm, struct tm *now, time_t sec)
{
time_t n;
@@ -1022,7 +1079,7 @@ static const char *approxidate_digit(const char *date, struct tm *tm, int *num,
time_t now)
{
char *end;
- unsigned long number = strtoul(date, &end, 10);
+ timestamp_t number = parse_timestamp(date, &end, 10);
switch (*end) {
case ':':
@@ -1070,9 +1127,9 @@ static void pending_number(struct tm *tm, int *num)
}
}
-static unsigned long approxidate_str(const char *date,
- const struct timeval *tv,
- int *error_ret)
+static timestamp_t approxidate_str(const char *date,
+ const struct timeval *tv,
+ int *error_ret)
{
int number = 0;
int touched = 0;
@@ -1104,12 +1161,12 @@ static unsigned long approxidate_str(const char *date,
pending_number(&tm, &number);
if (!touched)
*error_ret = 1;
- return update_tm(&tm, &now, 0);
+ return (timestamp_t)update_tm(&tm, &now, 0);
}
-unsigned long approxidate_relative(const char *date, const struct timeval *tv)
+timestamp_t approxidate_relative(const char *date, const struct timeval *tv)
{
- unsigned long timestamp;
+ timestamp_t timestamp;
int offset;
int errors = 0;
@@ -1118,10 +1175,10 @@ unsigned long approxidate_relative(const char *date, const struct timeval *tv)
return approxidate_str(date, tv, &errors);
}
-unsigned long approxidate_careful(const char *date, int *error_ret)
+timestamp_t approxidate_careful(const char *date, int *error_ret)
{
struct timeval tv;
- unsigned long timestamp;
+ timestamp_t timestamp;
int offset;
int dummy = 0;
if (!error_ret)
@@ -1136,12 +1193,12 @@ unsigned long approxidate_careful(const char *date, int *error_ret)
return approxidate_str(date, &tv, error_ret);
}
-int date_overflows(unsigned long t)
+int date_overflows(timestamp_t t)
{
time_t sys;
- /* If we overflowed our unsigned long, that's bad... */
- if (t == ULONG_MAX)
+ /* If we overflowed our timestamp data type, that's bad... */
+ if ((uintmax_t)t >= TIME_MAX)
return 1;
/*
generated by cgit v1.2.3 (git 2.25.1) at 2024-09-28 15:27:43 +0000