diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/misc.c | 35 | ||||
| -rw-r--r-- | lib/misc.h | 1 |
2 files changed, 36 insertions, 0 deletions
@@ -78,6 +78,41 @@ time_t get_time(int year, int month, int day, int hour, int min, int sec) return mktime(&tm); } +time_t mktime_utc( struct tm *tp ) +{ + struct tm utc; + time_t res, tres; + + tp->tm_isdst = -1; + res = mktime( tp ); + /* Problem is, mktime() just gave us the GMT timestamp for the + given local time... While the given time WAS NOT local. So + we should fix this now. + + Now I could choose between messing with environment variables + (kludgy) or using timegm() (not portable)... Or doing the + following, which I actually prefer... + + tzset() may also work but in other places I actually want to + use local time. + + FFFFFFFFFFFFFFFFFFFFFUUUUUUUUUUUUUUUUUUUU!! */ + gmtime_r( &res, &utc ); + utc.tm_isdst = -1; + if( utc.tm_hour == tp->tm_hour && utc.tm_min == tp->tm_min ) + /* Sweet! We're in UTC right now... */ + return res; + + tres = mktime( &utc ); + res += res - tres; + + /* Yes, this is a hack. And it will go wrong around DST changes. + BUT this is more likely to be threadsafe than messing with + environment variables, and possibly more portable... */ + + return res; +} + typedef struct htmlentity { char code[7]; @@ -42,6 +42,7 @@ G_MODULE_EXPORT char *add_cr( char *text ); G_MODULE_EXPORT char *strip_newlines(char *source); G_MODULE_EXPORT time_t get_time( int year, int month, int day, int hour, int min, int sec ); +G_MODULE_EXPORT time_t mktime_utc( struct tm *tp ); double gettime( void ); G_MODULE_EXPORT void strip_html( char *msg ); |