time_t
timegm( struct tm *t )
{
time_t tl, tb;
struct tm *tg;
if ((tl = my_mktime( t )) == -1)
return tl;
tg = gmtime( &tl );
tg->tm_isdst = 0;
if ((tb = my_mktime( tg )) == -1)
return tb;
return tl - (tb - tl);
}
void datestamp(char *buf, int bufsize)
{
time_t now;
int offset;
time(&now);
offset = my_mktime(localtime(&now)) - now;
offset /= 60;
date_string(now, offset, buf, bufsize);
}
/* 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(const char *date, char *result, int maxlen)
{
struct tm tm;
int offset, tm_gmt;
time_t then;
memset(&tm, 0, sizeof(tm));
tm.tm_year = -1;
tm.tm_mon = -1;
tm.tm_mday = -1;
tm.tm_isdst = -1;
offset = -1;
tm_gmt = 0;
for (;;) {
int match = 0;
unsigned char c = *date;
/* Stop at end of string or newline */
if (!c || c == '\n')
break;
if (isalpha(c))
match = match_alpha(date, &tm, &offset);
else if (isdigit(c))
match = match_digit(date, &tm, &offset, &tm_gmt);
else if ((c == '-' || c == '+') && isdigit(date[1]))
match = match_tz(date, &offset);
if (!match) {
/* BAD CRAP */
match = 1;
}
date += match;
}
/* mktime uses local timezone */
then = my_mktime(&tm);
if (offset == -1)
offset = (then - mktime(&tm)) / 60;
if (then == -1)
return -1;
if (!tm_gmt)
then -= offset * 60;
return date_string(then, offset, result, maxlen);
}
static int is_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;
struct tm *r = (now_tm ? &check : tm);
time_t specified;
r->tm_mon = month - 1;
r->tm_mday = day;
if (year == -1) {
if (!now_tm)
return 1;
r->tm_year = now_tm->tm_year;
}
else if (year >= 1970 && year < 2100)
r->tm_year = year - 1900;
else if (year > 70 && year < 100)
r->tm_year = year;
else if (year < 38)
r->tm_year = year + 100;
else
return 0;
if (!now_tm)
return 1;
specified = my_mktime(r);
/* Be it commit time or author time, it does not make
* 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)
return 0;
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;
}
/*
* What value of "tz" was in effect back then at "time" in the
* local timezone?
*/
static int local_tzoffset(unsigned long time)
{
time_t t, t_local;
struct tm tm;
int offset, eastwest;
t = time;
localtime_r(&t, &tm);
t_local = my_mktime(&tm);
if (t_local < t) {
eastwest = -1;
offset = t - t_local;
} else {
eastwest = 1;
offset = t_local - t;
}
offset /= 60; /* in minutes */
offset = (offset % 60) + ((offset / 60) * 100);
return offset * eastwest;
}
int32 get_bin_time_second(unsigned char bintime[])
{
return(my_mktime(bintime[5],bintime[4],bintime[3],bintime[2],bintime[1],bintime[0]));
}
