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cdf7ff3152
About half of this is purely cosmetic changes to reduce the diff between our code and theirs, like inserting "const" markers where they have them. The other half is tracking actual code changes in zic.c and localtime.c. I don't think any of these represent near-term compatibility hazards, but it seems best to stay up to date. I also fixed longstanding bugs in our code for producing the known_abbrevs.txt list, which by chance hadn't been exposed before, but which resulted in some garbage output after applying the upstream changes in zic.c. Notably, because upstream removed their old phony transitions at the Big Bang, it's now necessary to cope with TZif files containing no DST transition times at all.
81 lines
2 KiB
C
81 lines
2 KiB
C
/*-------------------------------------------------------------------------
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*
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* pgtz.h
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* Timezone Library Integration Functions
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*
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* Note: this file contains only definitions that are private to the
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* timezone library. Public definitions are in pgtime.h.
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*
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* Portions Copyright (c) 1996-2013, PostgreSQL Global Development Group
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*
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* IDENTIFICATION
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* src/timezone/pgtz.h
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef _PGTZ_H
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#define _PGTZ_H
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#include "pgtime.h"
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#include "tzfile.h"
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#define SMALLEST(a, b) (((a) < (b)) ? (a) : (b))
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#define BIGGEST(a, b) (((a) > (b)) ? (a) : (b))
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struct ttinfo
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{ /* time type information */
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int32 tt_gmtoff; /* UT offset in seconds */
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bool tt_isdst; /* used to set tm_isdst */
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int tt_abbrind; /* abbreviation list index */
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bool tt_ttisstd; /* transition is std time */
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bool tt_ttisgmt; /* transition is UT */
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};
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struct lsinfo
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{ /* leap second information */
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pg_time_t ls_trans; /* transition time */
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int64 ls_corr; /* correction to apply */
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};
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struct state
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{
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int leapcnt;
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int timecnt;
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int typecnt;
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int charcnt;
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bool goback;
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bool goahead;
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pg_time_t ats[TZ_MAX_TIMES];
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unsigned char types[TZ_MAX_TIMES];
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struct ttinfo ttis[TZ_MAX_TYPES];
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char chars[BIGGEST(BIGGEST(TZ_MAX_CHARS + 1, 4 /* sizeof gmt */ ),
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(2 * (TZ_STRLEN_MAX + 1)))];
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struct lsinfo lsis[TZ_MAX_LEAPS];
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/*
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* The time type to use for early times or if no transitions. It is always
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* zero for recent tzdb releases. It might be nonzero for data from tzdb
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* 2018e or earlier.
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*/
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int defaulttype;
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};
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struct pg_tz
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{
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/* TZname contains the canonically-cased name of the timezone */
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char TZname[TZ_STRLEN_MAX + 1];
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struct state state;
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};
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/* in pgtz.c */
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extern int pg_open_tzfile(const char *name, char *canonname);
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/* in localtime.c */
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extern int tzload(const char *name, char *canonname, struct state *sp,
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bool doextend);
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extern bool tzparse(const char *name, struct state *sp, bool lastditch);
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#endif /* _PGTZ_H */
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