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-rw-r--r--date.c93
1 files changed, 63 insertions, 30 deletions
diff --git a/date.c b/date.c
index 409a17d464..51c646166f 100644
--- a/date.c
+++ b/date.c
@@ -525,11 +525,8 @@ static int match_digit(const char *date, struct tm *tm, int *offset, int *tm_gmt
}
}
- if (num > 0 && num < 32) {
- tm->tm_mday = num;
- } else if (num > 0 && num < 13) {
+ if (num > 0 && num < 13 && tm->tm_mon < 0)
tm->tm_mon = num-1;
- }
return n;
}
@@ -657,42 +654,59 @@ void datestamp(char *buf, int bufsize)
date_string(now, offset, buf, bufsize);
}
-static void update_tm(struct tm *tm, unsigned long sec)
+/*
+ * 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)
{
- time_t n = mktime(tm) - 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;
}
-static void date_yesterday(struct tm *tm, int *num)
+static void date_yesterday(struct tm *tm, struct tm *now, int *num)
{
- update_tm(tm, 24*60*60);
+ update_tm(tm, now, 24*60*60);
}
-static void date_time(struct tm *tm, int hour)
+static void date_time(struct tm *tm, struct tm *now, int hour)
{
if (tm->tm_hour < hour)
- date_yesterday(tm, NULL);
+ date_yesterday(tm, now, NULL);
tm->tm_hour = hour;
tm->tm_min = 0;
tm->tm_sec = 0;
}
-static void date_midnight(struct tm *tm, int *num)
+static void date_midnight(struct tm *tm, struct tm *now, int *num)
{
- date_time(tm, 0);
+ date_time(tm, now, 0);
}
-static void date_noon(struct tm *tm, int *num)
+static void date_noon(struct tm *tm, struct tm *now, int *num)
{
- date_time(tm, 12);
+ date_time(tm, now, 12);
}
-static void date_tea(struct tm *tm, int *num)
+static void date_tea(struct tm *tm, struct tm *now, int *num)
{
- date_time(tm, 17);
+ date_time(tm, now, 17);
}
-static void date_pm(struct tm *tm, int *num)
+static void date_pm(struct tm *tm, struct tm *now, int *num)
{
int hour, n = *num;
*num = 0;
@@ -706,7 +720,7 @@ static void date_pm(struct tm *tm, int *num)
tm->tm_hour = (hour % 12) + 12;
}
-static void date_am(struct tm *tm, int *num)
+static void date_am(struct tm *tm, struct tm *now, int *num)
{
int hour, n = *num;
*num = 0;
@@ -720,7 +734,7 @@ static void date_am(struct tm *tm, int *num)
tm->tm_hour = (hour % 12);
}
-static void date_never(struct tm *tm, int *num)
+static void date_never(struct tm *tm, struct tm *now, int *num)
{
time_t n = 0;
localtime_r(&n, tm);
@@ -728,7 +742,7 @@ static void date_never(struct tm *tm, int *num)
static const struct special {
const char *name;
- void (*fn)(struct tm *, int *);
+ void (*fn)(struct tm *, struct tm *, int *);
} special[] = {
{ "yesterday", date_yesterday },
{ "noon", date_noon },
@@ -757,7 +771,7 @@ static const struct typelen {
{ NULL }
};
-static const char *approxidate_alpha(const char *date, struct tm *tm, int *num)
+static const char *approxidate_alpha(const char *date, struct tm *tm, struct tm *now, int *num)
{
const struct typelen *tl;
const struct special *s;
@@ -778,7 +792,7 @@ static const char *approxidate_alpha(const char *date, struct tm *tm, int *num)
for (s = special; s->name; s++) {
int len = strlen(s->name);
if (match_string(date, s->name) == len) {
- s->fn(tm, num);
+ s->fn(tm, now, num);
return end;
}
}
@@ -800,7 +814,7 @@ static const char *approxidate_alpha(const char *date, struct tm *tm, int *num)
while (tl->type) {
int len = strlen(tl->type);
if (match_string(date, tl->type) >= len-1) {
- update_tm(tm, tl->length * *num);
+ update_tm(tm, now, tl->length * *num);
*num = 0;
return end;
}
@@ -818,7 +832,7 @@ static const char *approxidate_alpha(const char *date, struct tm *tm, int *num)
n++;
diff += 7*n;
- update_tm(tm, diff * 24 * 60 * 60);
+ update_tm(tm, now, diff * 24 * 60 * 60);
return end;
}
}
@@ -866,6 +880,22 @@ static const char *approxidate_digit(const char *date, struct tm *tm, int *num)
return end;
}
+/*
+ * 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;
+ }
+}
+
unsigned long approxidate(const char *date)
{
int number = 0;
@@ -881,21 +911,24 @@ unsigned long approxidate(const char *date)
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);
continue;
}
if (isalpha(c))
- date = approxidate_alpha(date-1, &tm, &number);
+ date = approxidate_alpha(date-1, &tm, &now, &number);
}
- if (number > 0 && number < 32)
- tm.tm_mday = number;
- if (tm.tm_mon > now.tm_mon && tm.tm_year == now.tm_year)
- tm.tm_year--;
- return mktime(&tm);
+ pending_number(&tm, &number);
+ return update_tm(&tm, &now, 0);
}