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-rw-r--r--date.c288
1 files changed, 203 insertions, 85 deletions
diff --git a/date.c b/date.c
index a5055ca09d..7c9f76998a 100644
--- a/date.c
+++ b/date.c
@@ -86,116 +86,156 @@ static int local_tzoffset(unsigned long time)
return offset * eastwest;
}
-const char *show_date_relative(unsigned long time, int tz,
+void show_date_relative(unsigned long time, int tz,
const struct timeval *now,
- char *timebuf,
- size_t timebuf_size)
+ struct strbuf *timebuf)
{
unsigned long diff;
- if (now->tv_sec < time)
- return "in the future";
+ if (now->tv_sec < time) {
+ strbuf_addstr(timebuf, _("in the future"));
+ return;
+ }
diff = now->tv_sec - time;
if (diff < 90) {
- snprintf(timebuf, timebuf_size, "%lu seconds ago", diff);
- return timebuf;
+ strbuf_addf(timebuf,
+ Q_("%lu second ago", "%lu seconds ago", diff), diff);
+ return;
}
/* Turn it into minutes */
diff = (diff + 30) / 60;
if (diff < 90) {
- snprintf(timebuf, timebuf_size, "%lu minutes ago", diff);
- return timebuf;
+ strbuf_addf(timebuf,
+ Q_("%lu minute ago", "%lu minutes ago", diff), diff);
+ return;
}
/* Turn it into hours */
diff = (diff + 30) / 60;
if (diff < 36) {
- snprintf(timebuf, timebuf_size, "%lu hours ago", diff);
- return timebuf;
+ strbuf_addf(timebuf,
+ Q_("%lu hour ago", "%lu hours ago", diff), diff);
+ return;
}
/* We deal with number of days from here on */
diff = (diff + 12) / 24;
if (diff < 14) {
- snprintf(timebuf, timebuf_size, "%lu days ago", diff);
- return timebuf;
+ strbuf_addf(timebuf,
+ Q_("%lu day ago", "%lu days ago", diff), diff);
+ return;
}
/* Say weeks for the past 10 weeks or so */
if (diff < 70) {
- snprintf(timebuf, timebuf_size, "%lu weeks ago", (diff + 3) / 7);
- return timebuf;
+ strbuf_addf(timebuf,
+ Q_("%lu week ago", "%lu weeks ago", (diff + 3) / 7),
+ (diff + 3) / 7);
+ return;
}
/* Say months for the past 12 months or so */
if (diff < 365) {
- snprintf(timebuf, timebuf_size, "%lu months ago", (diff + 15) / 30);
- return timebuf;
+ strbuf_addf(timebuf,
+ Q_("%lu month ago", "%lu 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;
- int n;
- n = snprintf(timebuf, timebuf_size, "%lu year%s",
- years, (years > 1 ? "s" : ""));
- if (months)
- snprintf(timebuf + n, timebuf_size - n,
- ", %lu month%s ago",
- months, (months > 1 ? "s" : ""));
- else
- snprintf(timebuf + n, timebuf_size - n, " ago");
- return timebuf;
+ if (months) {
+ struct strbuf sb = STRBUF_INIT;
+ strbuf_addf(&sb, Q_("%lu year", "%lu years", years), years);
+ strbuf_addf(timebuf,
+ /* TRANSLATORS: "%s" is "<n> years" */
+ Q_("%s, %lu month ago", "%s, %lu months ago", months),
+ sb.buf, months);
+ strbuf_release(&sb);
+ } else
+ strbuf_addf(timebuf,
+ Q_("%lu year ago", "%lu years ago", years), years);
+ return;
}
/* Otherwise, just years. Centuries is probably overkill. */
- snprintf(timebuf, timebuf_size, "%lu years ago", (diff + 183) / 365);
- return timebuf;
+ strbuf_addf(timebuf,
+ Q_("%lu year ago", "%lu 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(unsigned long time, int tz, const struct date_mode *mode)
{
struct tm *tm;
- static char timebuf[200];
+ static struct strbuf timebuf = STRBUF_INIT;
- if (mode == DATE_RAW) {
- snprintf(timebuf, sizeof(timebuf), "%lu %+05d", time, tz);
- return timebuf;
+ if (mode->local)
+ tz = local_tzoffset(time);
+
+ if (mode->type == DATE_RAW) {
+ strbuf_reset(&timebuf);
+ strbuf_addf(&timebuf, "%lu %+05d", time, tz);
+ return timebuf.buf;
}
- if (mode == DATE_RELATIVE) {
+ if (mode->type == DATE_RELATIVE) {
struct timeval now;
+
+ strbuf_reset(&timebuf);
gettimeofday(&now, NULL);
- return show_date_relative(time, tz, &now,
- timebuf, sizeof(timebuf));
+ show_date_relative(time, tz, &now, &timebuf);
+ return timebuf.buf;
}
- if (mode == DATE_LOCAL)
- tz = local_tzoffset(time);
-
tm = time_to_tm(time, tz);
- if (!tm)
- return NULL;
- if (mode == DATE_SHORT)
- sprintf(timebuf, "%04d-%02d-%02d", tm->tm_year + 1900,
+ if (!tm) {
+ tm = time_to_tm(0, 0);
+ tz = 0;
+ }
+
+ strbuf_reset(&timebuf);
+ 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)
- sprintf(timebuf, "%04d-%02d-%02d %02d:%02d:%02d %+05d",
+ 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_RFC2822)
- sprintf(timebuf, "%.3s, %d %.3s %d %02d:%02d:%02d %+05d",
+ 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",
+ 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)
+ 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
- sprintf(timebuf, "%.3s %.3s %d %02d:%02d:%02d %d%c%+05d",
+ strbuf_addf(&timebuf, "%.3s %.3s %d %02d:%02d:%02d %d%c%+05d",
weekday_names[tm->tm_wday],
month_names[tm->tm_mon],
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;
+ return timebuf.buf;
}
/*
@@ -366,7 +406,7 @@ static int is_date(int year, int month, int day, struct tm *now_tm, time_t now,
* sense to specify timestamp way into the future. Make
* sure it is not later than ten days from now...
*/
- if (now + 10*24*3600 < specified)
+ if ((specified != -1) && (now + 10*24*3600 < specified))
return 0;
tm->tm_mon = r->tm_mon;
tm->tm_mday = r->tm_mday;
@@ -377,9 +417,9 @@ 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, char *end, struct tm *tm)
+static int match_multi_number(unsigned long num, char c, const char *date,
+ char *end, struct tm *tm, time_t now)
{
- time_t now;
struct tm now_tm;
struct tm *refuse_future;
long num2, num3;
@@ -405,17 +445,18 @@ static int match_multi_number(unsigned long num, char c, const char *date, char
case '-':
case '/':
case '.':
- now = time(NULL);
+ 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 (is_date(num, num2, num3, refuse_future, now, tm))
+ if (is_date(num, num2, num3, NULL, now, tm))
break;
/* yyyy-dd-mm? */
- if (is_date(num, num3, num2, refuse_future, now, tm))
+ if (is_date(num, num3, num2, NULL, now, tm))
break;
}
/* Our eastern European friends say dd.mm.yy[yy]
@@ -485,7 +526,7 @@ static int match_digit(const char *date, struct tm *tm, int *offset, int *tm_gmt
case '/':
case '-':
if (isdigit(end[1])) {
- int match = match_multi_number(num, *end, date, end, tm);
+ int match = match_multi_number(num, *end, date, end, tm, 0);
if (match)
return match;
}
@@ -586,7 +627,7 @@ static int match_tz(const char *date, int *offp)
return end - date;
}
-static int date_string(unsigned long date, int offset, char *buf, int len)
+static void date_string(unsigned long date, int offset, struct strbuf *buf)
{
int sign = '+';
@@ -594,7 +635,7 @@ static int date_string(unsigned long date, int offset, char *buf, int len)
offset = -offset;
sign = '-';
}
- return snprintf(buf, len, "%lu %c%02d%02d", date, sign, offset / 60, offset % 60);
+ strbuf_addf(buf, "%lu %c%02d%02d", date, sign, offset / 60, offset % 60);
}
/*
@@ -607,7 +648,7 @@ static int match_object_header_date(const char *date, unsigned long *timestamp,
unsigned long stamp;
int ofs;
- if (*date < '0' || '9' <= *date)
+ if (*date < '0' || '9' < *date)
return -1;
stamp = strtoul(date, &end, 10);
if (*end != ' ' || stamp == ULONG_MAX || (end[1] != '+' && end[1] != '-'))
@@ -675,51 +716,109 @@ int parse_date_basic(const char *date, unsigned long *timestamp, int *offset)
date += match;
}
- /* mktime uses local timezone */
+ /* do not use mktime(), which uses local timezone, here */
*timestamp = tm_to_time_t(&tm);
- if (*offset == -1)
- *offset = ((time_t)*timestamp - mktime(&tm)) / 60;
-
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_date(const char *date, char *result, int maxlen)
+int parse_expiry_date(const char *date, unsigned long *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 she has 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 = ULONG_MAX;
+ else
+ *timestamp = approxidate_careful(date, &errors);
+
+ return errors;
+}
+
+int parse_date(const char *date, struct strbuf *result)
{
unsigned long timestamp;
int offset;
if (parse_date_basic(date, &timestamp, &offset))
return -1;
- return date_string(timestamp, offset, result, maxlen);
+ date_string(timestamp, offset, 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"))
+ 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;
- else if (!strcmp(format, "rfc2822") ||
- !strcmp(format, "rfc"))
+ 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, "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);
}
-void datestamp(char *buf, int bufsize)
+void datestamp(struct strbuf *out)
{
time_t now;
int offset;
@@ -729,7 +828,7 @@ void datestamp(char *buf, int bufsize)
offset = tm_to_time_t(localtime(&now)) - now;
offset /= 60;
- date_string(now, offset, buf, bufsize);
+ date_string(now, offset, out);
}
/*
@@ -862,7 +961,7 @@ static const char *approxidate_alpha(const char *date, struct tm *tm, struct tm
const char *end = date;
int i;
- while (isalpha(*++end));
+ while (isalpha(*++end))
;
for (i = 0; i < 12; i++) {
@@ -953,7 +1052,8 @@ static const char *approxidate_alpha(const char *date, struct tm *tm, struct tm
return end;
}
-static const char *approxidate_digit(const char *date, struct tm *tm, int *num)
+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);
@@ -964,7 +1064,8 @@ static const char *approxidate_digit(const char *date, struct tm *tm, int *num)
case '/':
case '-':
if (isdigit(end[1])) {
- int match = match_multi_number(number, *end, date, end, tm);
+ int match = match_multi_number(number, *end, date, end,
+ tm, now);
if (match)
return date + match;
}
@@ -1027,7 +1128,7 @@ static unsigned long approxidate_str(const char *date,
date++;
if (isdigit(c)) {
pending_number(&tm, &number);
- date = approxidate_digit(date-1, &tm, &number);
+ date = approxidate_digit(date-1, &tm, &number, time_sec);
touched = 1;
continue;
}
@@ -1068,3 +1169,20 @@ unsigned long approxidate_careful(const char *date, int *error_ret)
gettimeofday(&tv, NULL);
return approxidate_str(date, &tv, error_ret);
}
+
+int date_overflows(unsigned long t)
+{
+ time_t sys;
+
+ /* If we overflowed our unsigned long, that's bad... */
+ if (t == ULONG_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);
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-10-02 10:28:50 +0000