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- /*-------------------------------------------------------------------------
- *
- * pgtime.h
- * PostgreSQL internal timezone library
- *
- * Portions Copyright (c) 1996-2016, 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 */
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