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date.c: split up dst information in the timezone table 

This still doesn't actually really _use_ it properly, nor make any
distinction between different DST rules, but at least we could (if
we wanted to) fake it a bit better.

Right now the code actually still says "it's always summer". I'm
from Finland, I don't like winter.
This commit is contained in:
Linus Torvalds 2005-04-30 14:53:12 -07:00
parent a90588821a
commit 5e2a78a410
1 changed files with 49 additions and 43 deletions
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92
date.c
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@ -47,51 +47,52 @@ static const char *weekday_names[] = {
static const struct {
const char *name;
int offset;
int dst;
} timezone_names[] = {
{ "IDLW", -12 }, /* International Date Line West */
{ "NT", -11 }, /* Nome */
{ "CAT", -10 }, /* Central Alaska */
{ "HST", -10 }, /* Hawaii Standard */
{ "HDT", -9 }, /* Hawaii Daylight */
{ "YDT", -8 }, /* Yukon Daylight */
{ "YST", -9 }, /* Yukon Standard */
{ "PST", -8 }, /* Pacific Standard */
{ "PDT", -7 }, /* Pacific Daylight */
{ "MST", -7 }, /* Mountain Standard */
{ "MDT", -6 }, /* Mountain Daylight */
{ "CST", -6 }, /* Central Standard */
{ "CDT", -5 }, /* Central Daylight */
{ "EST", -5 }, /* Eastern Standard */
{ "EDT", -4 }, /* Eastern Daylight */
{ "AST", -3 }, /* Atlantic Standard */
{ "ADT", -2 }, /* Atlantic Daylight */
{ "WAT", -1 }, /* West Africa */
{ "IDLW", -12, 0, }, /* International Date Line West */
{ "NT", -11, 0, }, /* Nome */
{ "CAT", -10, 0, }, /* Central Alaska */
{ "HST", -10, 0, }, /* Hawaii Standard */
{ "HDT", -10, 1, }, /* Hawaii Daylight */
{ "YST", -9, 0, }, /* Yukon Standard */
{ "YDT", -9, 1, }, /* Yukon Daylight */
{ "PST", -8, 0, }, /* Pacific Standard */
{ "PDT", -8, 1, }, /* Pacific Daylight */
{ "MST", -7, 0, }, /* Mountain Standard */
{ "MDT", -7, 1, }, /* Mountain Daylight */
{ "CST", -6, 0, }, /* Central Standard */
{ "CDT", -6, 1, }, /* Central Daylight */
{ "EST", -5, 0, }, /* Eastern Standard */
{ "EDT", -5, 1, }, /* Eastern Daylight */
{ "AST", -3, 0, }, /* Atlantic Standard */
{ "ADT", -3, 1, }, /* Atlantic Daylight */
{ "WAT", -1, 0, }, /* West Africa */
{ "GMT", 0 }, /* Greenwich Mean */
{ "UTC", 0 }, /* Universal (Coordinated) */
{ "GMT", 0, 0, }, /* Greenwich Mean */
{ "UTC", 0, 0, }, /* Universal (Coordinated) */
{ "WET", 0 }, /* Western European */
{ "BST", 0 }, /* British Summer */
{ "CET", +1 }, /* Central European */
{ "MET", +1 }, /* Middle European */
{ "MEWT", +1 }, /* Middle European Winter */
{ "MEST", +2 }, /* Middle European Summer */
{ "CEST", +2 }, /* Central European Summer */
{ "MESZ", +1 }, /* Middle European Summer */
{ "FWT", +1 }, /* French Winter */
{ "FST", +2 }, /* French Summer */
{ "EET", +2 }, /* Eastern Europe, USSR Zone 1 */
{ "WAST", +7 }, /* West Australian Standard */
{ "WADT", +8 }, /* West Australian Daylight */
{ "CCT", +8 }, /* China Coast, USSR Zone 7 */
{ "JST", +9 }, /* Japan Standard, USSR Zone 8 */
{ "EAST", +10 }, /* Eastern Australian Standard */
{ "EADT", +11 }, /* Eastern Australian Daylight */
{ "GST", +10 }, /* Guam Standard, USSR Zone 9 */
{ "NZT", +11 }, /* New Zealand */
{ "NZST", +11 }, /* New Zealand Standard */
{ "NZDT", +12 }, /* New Zealand Daylight */
{ "IDLE", +12 }, /* International Date Line East */
{ "WET", 0, 0, }, /* Western European */
{ "BST", 0, 1, }, /* British Summer */
{ "CET", +1, 0, }, /* Central European */
{ "MET", +1, 0, }, /* Middle European */
{ "MEWT", +1, 0, }, /* Middle European Winter */
{ "MEST", +1, 1, }, /* Middle European Summer */
{ "CEST", +1, 1, }, /* Central European Summer */
{ "MESZ", +1, 1, }, /* Middle European Summer */
{ "FWT", +1, 0, }, /* French Winter */
{ "FST", +1, 1, }, /* French Summer */
{ "EET", +2, 0, }, /* Eastern Europe, USSR Zone 1 */
{ "WAST", +7, 0, }, /* West Australian Standard */
{ "WADT", +7, 1, }, /* West Australian Daylight */
{ "CCT", +8, 0, }, /* China Coast, USSR Zone 7 */
{ "JST", +9, 0, }, /* Japan Standard, USSR Zone 8 */
{ "EAST", +10, 0, }, /* Eastern Australian Standard */
{ "EADT", +10, 1, }, /* Eastern Australian Daylight */
{ "GST", +10, 0, }, /* Guam Standard, USSR Zone 9 */
{ "NZT", +11, 0, }, /* New Zealand */
{ "NZST", +11, 0, }, /* New Zealand Standard */
{ "NZDT", +11, 1, }, /* New Zealand Daylight */
{ "IDLE", +12, 0, }, /* International Date Line East */
};
#define NR_TZ (sizeof(timezone_names) / sizeof(timezone_names[0]))
@ -138,7 +139,12 @@ static int match_alpha(const char *date, struct tm *tm, int *offset)
for (i = 0; i < NR_TZ; i++) {
int match = match_string(date, timezone_names[i].name);
if (match >= 3) {
*offset = 60*timezone_names[i].offset;
int off = timezone_names[i].offset;
/* This is bogus, but we like summer */
off += timezone_names[i].dst;
*offset = 60*off;
return match;
}
}