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/*-------------------------------------------------------------------------
*
* pgtz.h
* Timezone Library Integration Functions
*
* Note: this file contains only definitions that are private to the
* timezone library. Public definitions are in pgtime.h.
*
* Portions Copyright (c) 1996-2010, PostgreSQL Global Development Group
*
* IDENTIFICATION
* src/timezone/pgtz.h
*
*-------------------------------------------------------------------------
*/
#ifndef _PGTZ_H
#define _PGTZ_H
#include "tzfile.h"
#include "pgtime.h"
#define BIGGEST(a, b) (((a) > (b)) ? (a) : (b))
struct ttinfo
{ /* time type information */
long tt_gmtoff; /* UTC offset in seconds */
int tt_isdst; /* used to set tm_isdst */
int tt_abbrind; /* abbreviation list index */
int tt_ttisstd; /* TRUE if transition is std time */
int tt_ttisgmt; /* TRUE if transition is UTC */
};
struct lsinfo
{ /* leap second information */
pg_time_t ls_trans; /* transition time */
long ls_corr; /* correction to apply */
};
struct state
{
int leapcnt;
int timecnt;
int typecnt;
int charcnt;
int goback;
int goahead;
pg_time_t ats[TZ_MAX_TIMES];
unsigned char types[TZ_MAX_TIMES];
struct ttinfo ttis[TZ_MAX_TYPES];
char chars[BIGGEST(BIGGEST(TZ_MAX_CHARS + 1, 3 /* sizeof gmt */ ),
(2 * (TZ_STRLEN_MAX + 1)))];
struct lsinfo lsis[TZ_MAX_LEAPS];
};
struct pg_tz
{
/* TZname contains the canonically-cased name of the timezone */
char TZname[TZ_STRLEN_MAX + 1];
struct state state;
};
/* in pgtz.c */
extern int pg_open_tzfile(const char *name, char *canonname);
/* in localtime.c */
extern int tzload(const char *name, char *canonname, struct state * sp,
int doextend);
extern int tzparse(const char *name, struct state * sp, int lastditch);
#endif /* _PGTZ_H */
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