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50 lines
1.9 KiB
C
50 lines
1.9 KiB
C
/* Time internal interface
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Copyright 2015-2022 Free Software Foundation, Inc.
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This file is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as
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published by the Free Software Foundation, either version 3 of the
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License, or (at your option) any later version.
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This file is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>. */
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/* Written by Paul Eggert. */
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/* A time zone rule. */
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struct tm_zone
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{
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/* More abbreviations, should they be needed. Their TZ_IS_SET
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members are zero. */
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struct tm_zone *next;
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#if HAVE_TZNAME && !HAVE_STRUCT_TM_TM_ZONE
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/* Copies of recent strings taken from tzname[0] and tzname[1].
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The copies are in ABBRS, so that they survive tzset. Null if unknown. */
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char *tzname_copy[2];
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#endif
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/* If nonzero, the rule represents the TZ environment variable set
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to the first "abbreviation" (this may be the empty string).
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Otherwise, it represents an unset TZ. */
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char tz_is_set;
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/* A sequence of null-terminated strings packed next to each other.
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The strings are followed by an extra null byte. If TZ_IS_SET,
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there must be at least one string and the first string (which is
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actually a TZ environment value) may be empty. Otherwise all
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strings must be nonempty.
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Abbreviations are stored here because otherwise the values of
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tm_zone and/or tzname would be dead after changing TZ and calling
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tzset. Abbreviations never move once allocated, and are live
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until tzfree is called. */
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char abbrs[FLEXIBLE_ARRAY_MEMBER];
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};
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