diff options
| -rw-r--r-- | date.c | 93 |
1 files changed, 63 insertions, 30 deletions
@@ -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); } |