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/*------------------------------------------------------------------------- * * pgtime.h * PostgreSQL internal timezone library * * Portions Copyright (c) 1996-2012, PostgreSQL Global Development Group * * IDENTIFICATION * src/include/pgtime.h * *------------------------------------------------------------------------- */ #ifndef _PGTIME_H #define _PGTIME_H /* * The API of this library is generally similar to the corresponding * C library functions, except that we use pg_time_t which (we hope) is * 64 bits wide, and which is most definitely signed not unsigned. */ typedef int64 pg_time_t; struct pg_tm { int tm_sec; int tm_min; int tm_hour; int tm_mday; int tm_mon; /* origin 0, not 1 */ int tm_year; /* relative to 1900 */ int tm_wday; int tm_yday; int tm_isdst; long int tm_gmtoff; const char *tm_zone; }; typedef struct pg_tz pg_tz; typedef struct pg_tzenum pg_tzenum; /* Maximum length of a timezone name (not including trailing null) */ #define TZ_STRLEN_MAX 255 /* these functions are in localtime.c */ extern struct pg_tm *pg_localtime(const pg_time_t *timep, const pg_tz *tz); extern struct pg_tm *pg_gmtime(const pg_time_t *timep); extern int pg_next_dst_boundary(const pg_time_t *timep, long int *before_gmtoff, int *before_isdst, pg_time_t *boundary, long int *after_gmtoff, int *after_isdst, const pg_tz *tz); extern bool pg_interpret_timezone_abbrev(const char *abbrev, const pg_time_t *timep, long int *gmtoff, int *isdst, const pg_tz *tz); extern bool pg_get_timezone_offset(const pg_tz *tz, long int *gmtoff); extern const char *pg_get_timezone_name(pg_tz *tz); extern bool pg_tz_acceptable(pg_tz *tz); /* these functions are in strftime.c */ extern size_t pg_strftime(char *s, size_t max, const char *format, const struct pg_tm * tm); /* these functions and variables are in pgtz.c */ extern pg_tz *session_timezone; extern pg_tz *log_timezone; extern void pg_timezone_initialize(void); extern pg_tz *pg_tzset(const char *tzname); extern pg_tz *pg_tzset_offset(long gmtoffset); extern pg_tzenum *pg_tzenumerate_start(void); extern pg_tz *pg_tzenumerate_next(pg_tzenum *dir); extern void pg_tzenumerate_end(pg_tzenum *dir); #endif /* _PGTIME_H */