mirror of
https://git.savannah.gnu.org/git/emacs.git
synced 2024-11-21 06:55:39 +00:00
55 lines
2.0 KiB
C
55 lines
2.0 KiB
C
/* Time internal interface
|
|
|
|
Copyright 2015-2024 Free Software Foundation, Inc.
|
|
|
|
This file is free software: you can redistribute it and/or modify
|
|
it under the terms of the GNU Lesser General Public License as
|
|
published by the Free Software Foundation, either version 3 of the
|
|
License, or (at your option) any later version.
|
|
|
|
This file is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public License
|
|
along with this program. If not, see <https://www.gnu.org/licenses/>. */
|
|
|
|
/* Written by Paul Eggert. */
|
|
|
|
/* This file is for Gnulib internal use only.
|
|
Applications should not use it. */
|
|
|
|
/* A time zone rule. */
|
|
struct tm_zone
|
|
{
|
|
/* More abbreviations, should they be needed. Their TZ_IS_SET
|
|
members are zero. */
|
|
struct tm_zone *next;
|
|
|
|
/* If nonzero, the rule represents the TZ environment variable set
|
|
to the first "abbreviation" (this may be the empty string).
|
|
Otherwise, it represents an unset TZ. */
|
|
char tz_is_set;
|
|
|
|
/* A sequence of null-terminated strings packed next to each other.
|
|
The strings are followed by an extra null byte. If TZ_IS_SET,
|
|
there must be at least one string and the first string (which is
|
|
actually a TZ environment value) may be empty. Otherwise all
|
|
strings must be nonempty.
|
|
|
|
Abbreviations are stored here even on platforms with tm_zone, because
|
|
otherwise tm_zone values would be dead after changing TZ and calling
|
|
tzset. Abbreviations never move once allocated, and are live
|
|
until tzfree is called. */
|
|
char abbrs[FLEXIBLE_ARRAY_MEMBER];
|
|
};
|
|
|
|
timezone_t set_tz (timezone_t);
|
|
bool revert_tz (timezone_t);
|
|
|
|
/* Magic cookie timezone_t value, for local time. It differs from
|
|
NULL and from all other timezone_t values. Only the address
|
|
matters; the pointer is never dereferenced. */
|
|
#define local_tz ((timezone_t) 1)
|