3004 lines
73 KiB
C
3004 lines
73 KiB
C
/* src/interfaces/ecpg/pgtypeslib/dt_common.c */
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#include "postgres_fe.h"
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#include <time.h>
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#include <ctype.h>
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#include <math.h>
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#include "common/string.h"
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#include "dt.h"
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#include "pgtypes_timestamp.h"
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#include "pgtypeslib_extern.h"
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const int day_tab[2][13] = {
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{31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31, 0},
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{31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31, 0}};
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typedef long AbsoluteTime;
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static const datetkn datetktbl[] = {
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/* text, token, lexval */
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{EARLY, RESERV, DTK_EARLY}, /* "-infinity" reserved for "early time" */
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{"acsst", DTZ, 37800}, /* Cent. Australia */
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{"acst", DTZ, -14400}, /* Atlantic/Porto Acre */
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{"act", TZ, -18000}, /* Atlantic/Porto Acre */
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{DA_D, ADBC, AD}, /* "ad" for years >= 0 */
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{"adt", DTZ, -10800}, /* Atlantic Daylight Time */
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{"aesst", DTZ, 39600}, /* E. Australia */
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{"aest", TZ, 36000}, /* Australia Eastern Std Time */
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{"aft", TZ, 16200}, /* Kabul */
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{"ahst", TZ, -36000}, /* Alaska-Hawaii Std Time */
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{"akdt", DTZ, -28800}, /* Alaska Daylight Time */
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{"akst", DTZ, -32400}, /* Alaska Standard Time */
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{"allballs", RESERV, DTK_ZULU}, /* 00:00:00 */
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{"almst", TZ, 25200}, /* Almaty Savings Time */
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{"almt", TZ, 21600}, /* Almaty Time */
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{"am", AMPM, AM},
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{"amst", DTZ, 18000}, /* Armenia Summer Time (Yerevan) */
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#if 0
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{"amst", DTZ, -10800}, /* Porto Velho */
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#endif
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{"amt", TZ, 14400}, /* Armenia Time (Yerevan) */
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{"anast", DTZ, 46800}, /* Anadyr Summer Time (Russia) */
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{"anat", TZ, 43200}, /* Anadyr Time (Russia) */
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{"apr", MONTH, 4},
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{"april", MONTH, 4},
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#if 0
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aqtst
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aqtt
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arst
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#endif
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{"art", TZ, -10800}, /* Argentina Time */
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#if 0
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ashst
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ast /* Atlantic Standard Time, Arabia Standard
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* Time, Acre Standard Time */
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#endif
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{"ast", TZ, -14400}, /* Atlantic Std Time (Canada) */
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{"at", IGNORE_DTF, 0}, /* "at" (throwaway) */
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{"aug", MONTH, 8},
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{"august", MONTH, 8},
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{"awsst", DTZ, 32400}, /* W. Australia */
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{"awst", TZ, 28800}, /* W. Australia */
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{"awt", DTZ, -10800},
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{"azost", DTZ, 0}, /* Azores Summer Time */
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{"azot", TZ, -3600}, /* Azores Time */
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{"azst", DTZ, 18000}, /* Azerbaijan Summer Time */
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{"azt", TZ, 14400}, /* Azerbaijan Time */
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{DB_C, ADBC, BC}, /* "bc" for years < 0 */
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{"bdst", TZ, 7200}, /* British Double Summer Time */
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{"bdt", TZ, 21600}, /* Dacca */
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{"bnt", TZ, 28800}, /* Brunei Darussalam Time */
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{"bort", TZ, 28800}, /* Borneo Time (Indonesia) */
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#if 0
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bortst
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bost
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#endif
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{"bot", TZ, -14400}, /* Bolivia Time */
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{"bra", TZ, -10800}, /* Brazil Time */
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#if 0
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brst
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brt
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#endif
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{"bst", DTZ, 3600}, /* British Summer Time */
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#if 0
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{"bst", TZ, -10800}, /* Brazil Standard Time */
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{"bst", DTZ, -39600}, /* Bering Summer Time */
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#endif
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{"bt", TZ, 10800}, /* Baghdad Time */
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{"btt", TZ, 21600}, /* Bhutan Time */
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{"cadt", DTZ, 37800}, /* Central Australian DST */
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{"cast", TZ, 34200}, /* Central Australian ST */
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{"cat", TZ, -36000}, /* Central Alaska Time */
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{"cct", TZ, 28800}, /* China Coast Time */
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#if 0
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{"cct", TZ, 23400}, /* Indian Cocos (Island) Time */
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#endif
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{"cdt", DTZ, -18000}, /* Central Daylight Time */
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{"cest", DTZ, 7200}, /* Central European Dayl.Time */
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{"cet", TZ, 3600}, /* Central European Time */
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{"cetdst", DTZ, 7200}, /* Central European Dayl.Time */
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{"chadt", DTZ, 49500}, /* Chatham Island Daylight Time (13:45) */
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{"chast", TZ, 45900}, /* Chatham Island Time (12:45) */
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#if 0
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ckhst
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#endif
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{"ckt", TZ, 43200}, /* Cook Islands Time */
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{"clst", DTZ, -10800}, /* Chile Summer Time */
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{"clt", TZ, -14400}, /* Chile Time */
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#if 0
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cost
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#endif
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{"cot", TZ, -18000}, /* Columbia Time */
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{"cst", TZ, -21600}, /* Central Standard Time */
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#if 0
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cvst
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#endif
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{"cvt", TZ, 25200}, /* Christmas Island Time (Indian Ocean) */
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{"cxt", TZ, 25200}, /* Christmas Island Time (Indian Ocean) */
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{"d", UNITS, DTK_DAY}, /* "day of month" for ISO input */
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{"davt", TZ, 25200}, /* Davis Time (Antarctica) */
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{"ddut", TZ, 36000}, /* Dumont-d'Urville Time (Antarctica) */
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{"dec", MONTH, 12},
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{"december", MONTH, 12},
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{"dnt", TZ, 3600}, /* Dansk Normal Tid */
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{"dow", UNITS, DTK_DOW}, /* day of week */
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{"doy", UNITS, DTK_DOY}, /* day of year */
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{"dst", DTZMOD, SECS_PER_HOUR},
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#if 0
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{"dusst", DTZ, 21600}, /* Dushanbe Summer Time */
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#endif
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{"easst", DTZ, -18000}, /* Easter Island Summer Time */
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{"east", TZ, -21600}, /* Easter Island Time */
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{"eat", TZ, 10800}, /* East Africa Time */
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#if 0
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{"east", DTZ, 14400}, /* Indian Antananarivo Savings Time */
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{"eat", TZ, 10800}, /* Indian Antananarivo Time */
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{"ect", TZ, -14400}, /* Eastern Caribbean Time */
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{"ect", TZ, -18000}, /* Ecuador Time */
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#endif
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{"edt", DTZ, -14400}, /* Eastern Daylight Time */
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{"eest", DTZ, 10800}, /* Eastern Europe Summer Time */
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{"eet", TZ, 7200}, /* East. Europe, USSR Zone 1 */
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{"eetdst", DTZ, 10800}, /* Eastern Europe Daylight Time */
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{"egst", DTZ, 0}, /* East Greenland Summer Time */
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{"egt", TZ, -3600}, /* East Greenland Time */
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#if 0
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ehdt
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#endif
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{EPOCH, RESERV, DTK_EPOCH}, /* "epoch" reserved for system epoch time */
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{"est", TZ, -18000}, /* Eastern Standard Time */
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{"feb", MONTH, 2},
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{"february", MONTH, 2},
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{"fjst", DTZ, -46800}, /* Fiji Summer Time (13 hour offset!) */
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{"fjt", TZ, -43200}, /* Fiji Time */
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{"fkst", DTZ, -10800}, /* Falkland Islands Summer Time */
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{"fkt", TZ, -7200}, /* Falkland Islands Time */
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#if 0
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fnst
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fnt
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#endif
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{"fri", DOW, 5},
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{"friday", DOW, 5},
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{"fst", TZ, 3600}, /* French Summer Time */
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{"fwt", DTZ, 7200}, /* French Winter Time */
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{"galt", TZ, -21600}, /* Galapagos Time */
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{"gamt", TZ, -32400}, /* Gambier Time */
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{"gest", DTZ, 18000}, /* Georgia Summer Time */
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{"get", TZ, 14400}, /* Georgia Time */
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{"gft", TZ, -10800}, /* French Guiana Time */
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#if 0
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ghst
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#endif
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{"gilt", TZ, 43200}, /* Gilbert Islands Time */
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{"gmt", TZ, 0}, /* Greenwich Mean Time */
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{"gst", TZ, 36000}, /* Guam Std Time, USSR Zone 9 */
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{"gyt", TZ, -14400}, /* Guyana Time */
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{"h", UNITS, DTK_HOUR}, /* "hour" */
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#if 0
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hadt
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hast
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#endif
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{"hdt", DTZ, -32400}, /* Hawaii/Alaska Daylight Time */
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#if 0
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hkst
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#endif
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{"hkt", TZ, 28800}, /* Hong Kong Time */
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#if 0
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{"hmt", TZ, 10800}, /* Hellas ? ? */
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hovst
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hovt
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#endif
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{"hst", TZ, -36000}, /* Hawaii Std Time */
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#if 0
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hwt
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#endif
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{"ict", TZ, 25200}, /* Indochina Time */
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{"idle", TZ, 43200}, /* Intl. Date Line, East */
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{"idlw", TZ, -43200}, /* Intl. Date Line, West */
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#if 0
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idt /* Israeli, Iran, Indian Daylight Time */
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#endif
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{LATE, RESERV, DTK_LATE}, /* "infinity" reserved for "late time" */
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{"iot", TZ, 18000}, /* Indian Chagos Time */
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{"irkst", DTZ, 32400}, /* Irkutsk Summer Time */
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{"irkt", TZ, 28800}, /* Irkutsk Time */
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{"irt", TZ, 12600}, /* Iran Time */
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{"isodow", UNITS, DTK_ISODOW}, /* ISO day of week, Sunday == 7 */
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#if 0
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isst
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#endif
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{"ist", TZ, 7200}, /* Israel */
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{"it", TZ, 12600}, /* Iran Time */
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{"j", UNITS, DTK_JULIAN},
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{"jan", MONTH, 1},
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{"january", MONTH, 1},
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{"javt", TZ, 25200}, /* Java Time (07:00? see JT) */
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{"jayt", TZ, 32400}, /* Jayapura Time (Indonesia) */
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{"jd", UNITS, DTK_JULIAN},
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{"jst", TZ, 32400}, /* Japan Std Time,USSR Zone 8 */
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{"jt", TZ, 27000}, /* Java Time (07:30? see JAVT) */
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{"jul", MONTH, 7},
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{"julian", UNITS, DTK_JULIAN},
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{"july", MONTH, 7},
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{"jun", MONTH, 6},
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{"june", MONTH, 6},
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{"kdt", DTZ, 36000}, /* Korea Daylight Time */
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{"kgst", DTZ, 21600}, /* Kyrgyzstan Summer Time */
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{"kgt", TZ, 18000}, /* Kyrgyzstan Time */
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{"kost", TZ, 43200}, /* Kosrae Time */
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{"krast", DTZ, 25200}, /* Krasnoyarsk Summer Time */
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{"krat", TZ, 28800}, /* Krasnoyarsk Standard Time */
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{"kst", TZ, 32400}, /* Korea Standard Time */
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{"lhdt", DTZ, 39600}, /* Lord Howe Daylight Time, Australia */
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{"lhst", TZ, 37800}, /* Lord Howe Standard Time, Australia */
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{"ligt", TZ, 36000}, /* From Melbourne, Australia */
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{"lint", TZ, 50400}, /* Line Islands Time (Kiribati; +14 hours!) */
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{"lkt", TZ, 21600}, /* Lanka Time */
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{"m", UNITS, DTK_MONTH}, /* "month" for ISO input */
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{"magst", DTZ, 43200}, /* Magadan Summer Time */
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{"magt", TZ, 39600}, /* Magadan Time */
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{"mar", MONTH, 3},
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{"march", MONTH, 3},
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{"mart", TZ, -34200}, /* Marquesas Time */
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{"mawt", TZ, 21600}, /* Mawson, Antarctica */
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{"may", MONTH, 5},
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{"mdt", DTZ, -21600}, /* Mountain Daylight Time */
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{"mest", DTZ, 7200}, /* Middle Europe Summer Time */
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{"met", TZ, 3600}, /* Middle Europe Time */
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{"metdst", DTZ, 7200}, /* Middle Europe Daylight Time */
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{"mewt", TZ, 3600}, /* Middle Europe Winter Time */
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{"mez", TZ, 3600}, /* Middle Europe Zone */
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{"mht", TZ, 43200}, /* Kwajalein */
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{"mm", UNITS, DTK_MINUTE}, /* "minute" for ISO input */
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{"mmt", TZ, 23400}, /* Myannar Time */
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{"mon", DOW, 1},
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{"monday", DOW, 1},
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#if 0
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most
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#endif
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{"mpt", TZ, 36000}, /* North Mariana Islands Time */
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{"msd", DTZ, 14400}, /* Moscow Summer Time */
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{"msk", TZ, 10800}, /* Moscow Time */
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{"mst", TZ, -25200}, /* Mountain Standard Time */
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{"mt", TZ, 30600}, /* Moluccas Time */
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{"mut", TZ, 14400}, /* Mauritius Island Time */
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{"mvt", TZ, 18000}, /* Maldives Island Time */
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{"myt", TZ, 28800}, /* Malaysia Time */
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#if 0
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ncst
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#endif
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{"nct", TZ, 39600}, /* New Caledonia Time */
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{"ndt", DTZ, -9000}, /* Nfld. Daylight Time */
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{"nft", TZ, -12600}, /* Newfoundland Standard Time */
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{"nor", TZ, 3600}, /* Norway Standard Time */
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{"nov", MONTH, 11},
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{"november", MONTH, 11},
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{"novst", DTZ, 25200}, /* Novosibirsk Summer Time */
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{"novt", TZ, 21600}, /* Novosibirsk Standard Time */
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{NOW, RESERV, DTK_NOW}, /* current transaction time */
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{"npt", TZ, 20700}, /* Nepal Standard Time (GMT-5:45) */
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{"nst", TZ, -12600}, /* Nfld. Standard Time */
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{"nt", TZ, -39600}, /* Nome Time */
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{"nut", TZ, -39600}, /* Niue Time */
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{"nzdt", DTZ, 46800}, /* New Zealand Daylight Time */
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{"nzst", TZ, 43200}, /* New Zealand Standard Time */
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{"nzt", TZ, 43200}, /* New Zealand Time */
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{"oct", MONTH, 10},
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{"october", MONTH, 10},
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{"omsst", DTZ, 25200}, /* Omsk Summer Time */
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{"omst", TZ, 21600}, /* Omsk Time */
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{"on", IGNORE_DTF, 0}, /* "on" (throwaway) */
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{"pdt", DTZ, -25200}, /* Pacific Daylight Time */
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#if 0
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pest
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#endif
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{"pet", TZ, -18000}, /* Peru Time */
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{"petst", DTZ, 46800}, /* Petropavlovsk-Kamchatski Summer Time */
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{"pett", TZ, 43200}, /* Petropavlovsk-Kamchatski Time */
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{"pgt", TZ, 36000}, /* Papua New Guinea Time */
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{"phot", TZ, 46800}, /* Phoenix Islands (Kiribati) Time */
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#if 0
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phst
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#endif
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{"pht", TZ, 28800}, /* Philippine Time */
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{"pkt", TZ, 18000}, /* Pakistan Time */
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{"pm", AMPM, PM},
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{"pmdt", DTZ, -7200}, /* Pierre & Miquelon Daylight Time */
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#if 0
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pmst
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#endif
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{"pont", TZ, 39600}, /* Ponape Time (Micronesia) */
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{"pst", TZ, -28800}, /* Pacific Standard Time */
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{"pwt", TZ, 32400}, /* Palau Time */
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{"pyst", DTZ, -10800}, /* Paraguay Summer Time */
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{"pyt", TZ, -14400}, /* Paraguay Time */
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{"ret", DTZ, 14400}, /* Reunion Island Time */
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{"s", UNITS, DTK_SECOND}, /* "seconds" for ISO input */
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{"sadt", DTZ, 37800}, /* S. Australian Dayl. Time */
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#if 0
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samst
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samt
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#endif
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{"sast", TZ, 34200}, /* South Australian Std Time */
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{"sat", DOW, 6},
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{"saturday", DOW, 6},
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#if 0
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sbt
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#endif
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{"sct", DTZ, 14400}, /* Mahe Island Time */
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{"sep", MONTH, 9},
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{"sept", MONTH, 9},
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{"september", MONTH, 9},
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{"set", TZ, -3600}, /* Seychelles Time ?? */
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#if 0
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sgt
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#endif
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{"sst", DTZ, 7200}, /* Swedish Summer Time */
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{"sun", DOW, 0},
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{"sunday", DOW, 0},
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{"swt", TZ, 3600}, /* Swedish Winter Time */
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#if 0
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syot
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#endif
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{"t", ISOTIME, DTK_TIME}, /* Filler for ISO time fields */
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{"tft", TZ, 18000}, /* Kerguelen Time */
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{"that", TZ, -36000}, /* Tahiti Time */
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{"thu", DOW, 4},
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{"thur", DOW, 4},
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{"thurs", DOW, 4},
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{"thursday", DOW, 4},
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{"tjt", TZ, 18000}, /* Tajikistan Time */
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{"tkt", TZ, -36000}, /* Tokelau Time */
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{"tmt", TZ, 18000}, /* Turkmenistan Time */
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{TODAY, RESERV, DTK_TODAY}, /* midnight */
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{TOMORROW, RESERV, DTK_TOMORROW}, /* tomorrow midnight */
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#if 0
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tost
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#endif
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{"tot", TZ, 46800}, /* Tonga Time */
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#if 0
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tpt
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#endif
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{"truk", TZ, 36000}, /* Truk Time */
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{"tue", DOW, 2},
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{"tues", DOW, 2},
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{"tuesday", DOW, 2},
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{"tvt", TZ, 43200}, /* Tuvalu Time */
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#if 0
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uct
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#endif
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{"ulast", DTZ, 32400}, /* Ulan Bator Summer Time */
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{"ulat", TZ, 28800}, /* Ulan Bator Time */
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{"ut", TZ, 0},
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{"utc", TZ, 0},
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{"uyst", DTZ, -7200}, /* Uruguay Summer Time */
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{"uyt", TZ, -10800}, /* Uruguay Time */
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{"uzst", DTZ, 21600}, /* Uzbekistan Summer Time */
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{"uzt", TZ, 18000}, /* Uzbekistan Time */
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{"vet", TZ, -14400}, /* Venezuela Time */
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{"vlast", DTZ, 39600}, /* Vladivostok Summer Time */
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{"vlat", TZ, 36000}, /* Vladivostok Time */
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#if 0
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vust
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#endif
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{"vut", TZ, 39600}, /* Vanuata Time */
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{"wadt", DTZ, 28800}, /* West Australian DST */
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{"wakt", TZ, 43200}, /* Wake Time */
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#if 0
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warst
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#endif
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{"wast", TZ, 25200}, /* West Australian Std Time */
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{"wat", TZ, -3600}, /* West Africa Time */
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{"wdt", DTZ, 32400}, /* West Australian DST */
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{"wed", DOW, 3},
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{"wednesday", DOW, 3},
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{"weds", DOW, 3},
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{"west", DTZ, 3600}, /* Western Europe Summer Time */
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{"wet", TZ, 0}, /* Western Europe */
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{"wetdst", DTZ, 3600}, /* Western Europe Daylight Savings Time */
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{"wft", TZ, 43200}, /* Wallis and Futuna Time */
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{"wgst", DTZ, -7200}, /* West Greenland Summer Time */
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{"wgt", TZ, -10800}, /* West Greenland Time */
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{"wst", TZ, 28800}, /* West Australian Standard Time */
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{"y", UNITS, DTK_YEAR}, /* "year" for ISO input */
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{"yakst", DTZ, 36000}, /* Yakutsk Summer Time */
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{"yakt", TZ, 32400}, /* Yakutsk Time */
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{"yapt", TZ, 36000}, /* Yap Time (Micronesia) */
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{"ydt", DTZ, -28800}, /* Yukon Daylight Time */
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{"yekst", DTZ, 21600}, /* Yekaterinburg Summer Time */
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{"yekt", TZ, 18000}, /* Yekaterinburg Time */
|
|
{YESTERDAY, RESERV, DTK_YESTERDAY}, /* yesterday midnight */
|
|
{"yst", TZ, -32400}, /* Yukon Standard Time */
|
|
{"z", TZ, 0}, /* time zone tag per ISO-8601 */
|
|
{"zp4", TZ, -14400}, /* UTC +4 hours. */
|
|
{"zp5", TZ, -18000}, /* UTC +5 hours. */
|
|
{"zp6", TZ, -21600}, /* UTC +6 hours. */
|
|
{ZULU, TZ, 0}, /* UTC */
|
|
};
|
|
|
|
static const datetkn deltatktbl[] = {
|
|
/* text, token, lexval */
|
|
{"@", IGNORE_DTF, 0}, /* postgres relative prefix */
|
|
{DAGO, AGO, 0}, /* "ago" indicates negative time offset */
|
|
{"c", UNITS, DTK_CENTURY}, /* "century" relative */
|
|
{"cent", UNITS, DTK_CENTURY}, /* "century" relative */
|
|
{"centuries", UNITS, DTK_CENTURY}, /* "centuries" relative */
|
|
{DCENTURY, UNITS, DTK_CENTURY}, /* "century" relative */
|
|
{"d", UNITS, DTK_DAY}, /* "day" relative */
|
|
{DDAY, UNITS, DTK_DAY}, /* "day" relative */
|
|
{"days", UNITS, DTK_DAY}, /* "days" relative */
|
|
{"dec", UNITS, DTK_DECADE}, /* "decade" relative */
|
|
{DDECADE, UNITS, DTK_DECADE}, /* "decade" relative */
|
|
{"decades", UNITS, DTK_DECADE}, /* "decades" relative */
|
|
{"decs", UNITS, DTK_DECADE}, /* "decades" relative */
|
|
{"h", UNITS, DTK_HOUR}, /* "hour" relative */
|
|
{DHOUR, UNITS, DTK_HOUR}, /* "hour" relative */
|
|
{"hours", UNITS, DTK_HOUR}, /* "hours" relative */
|
|
{"hr", UNITS, DTK_HOUR}, /* "hour" relative */
|
|
{"hrs", UNITS, DTK_HOUR}, /* "hours" relative */
|
|
{"m", UNITS, DTK_MINUTE}, /* "minute" relative */
|
|
{"microsecon", UNITS, DTK_MICROSEC}, /* "microsecond" relative */
|
|
{"mil", UNITS, DTK_MILLENNIUM}, /* "millennium" relative */
|
|
{"millennia", UNITS, DTK_MILLENNIUM}, /* "millennia" relative */
|
|
{DMILLENNIUM, UNITS, DTK_MILLENNIUM}, /* "millennium" relative */
|
|
{"millisecon", UNITS, DTK_MILLISEC}, /* relative */
|
|
{"mils", UNITS, DTK_MILLENNIUM}, /* "millennia" relative */
|
|
{"min", UNITS, DTK_MINUTE}, /* "minute" relative */
|
|
{"mins", UNITS, DTK_MINUTE}, /* "minutes" relative */
|
|
{DMINUTE, UNITS, DTK_MINUTE}, /* "minute" relative */
|
|
{"minutes", UNITS, DTK_MINUTE}, /* "minutes" relative */
|
|
{"mon", UNITS, DTK_MONTH}, /* "months" relative */
|
|
{"mons", UNITS, DTK_MONTH}, /* "months" relative */
|
|
{DMONTH, UNITS, DTK_MONTH}, /* "month" relative */
|
|
{"months", UNITS, DTK_MONTH},
|
|
{"ms", UNITS, DTK_MILLISEC},
|
|
{"msec", UNITS, DTK_MILLISEC},
|
|
{DMILLISEC, UNITS, DTK_MILLISEC},
|
|
{"mseconds", UNITS, DTK_MILLISEC},
|
|
{"msecs", UNITS, DTK_MILLISEC},
|
|
{"qtr", UNITS, DTK_QUARTER}, /* "quarter" relative */
|
|
{DQUARTER, UNITS, DTK_QUARTER}, /* "quarter" relative */
|
|
{"s", UNITS, DTK_SECOND},
|
|
{"sec", UNITS, DTK_SECOND},
|
|
{DSECOND, UNITS, DTK_SECOND},
|
|
{"seconds", UNITS, DTK_SECOND},
|
|
{"secs", UNITS, DTK_SECOND},
|
|
{DTIMEZONE, UNITS, DTK_TZ}, /* "timezone" time offset */
|
|
{"timezone_h", UNITS, DTK_TZ_HOUR}, /* timezone hour units */
|
|
{"timezone_m", UNITS, DTK_TZ_MINUTE}, /* timezone minutes units */
|
|
{"us", UNITS, DTK_MICROSEC}, /* "microsecond" relative */
|
|
{"usec", UNITS, DTK_MICROSEC}, /* "microsecond" relative */
|
|
{DMICROSEC, UNITS, DTK_MICROSEC}, /* "microsecond" relative */
|
|
{"useconds", UNITS, DTK_MICROSEC}, /* "microseconds" relative */
|
|
{"usecs", UNITS, DTK_MICROSEC}, /* "microseconds" relative */
|
|
{"w", UNITS, DTK_WEEK}, /* "week" relative */
|
|
{DWEEK, UNITS, DTK_WEEK}, /* "week" relative */
|
|
{"weeks", UNITS, DTK_WEEK}, /* "weeks" relative */
|
|
{"y", UNITS, DTK_YEAR}, /* "year" relative */
|
|
{DYEAR, UNITS, DTK_YEAR}, /* "year" relative */
|
|
{"years", UNITS, DTK_YEAR}, /* "years" relative */
|
|
{"yr", UNITS, DTK_YEAR}, /* "year" relative */
|
|
{"yrs", UNITS, DTK_YEAR}, /* "years" relative */
|
|
};
|
|
|
|
static const unsigned int szdatetktbl = lengthof(datetktbl);
|
|
static const unsigned int szdeltatktbl = lengthof(deltatktbl);
|
|
|
|
static const datetkn *datecache[MAXDATEFIELDS] = {NULL};
|
|
|
|
static const datetkn *deltacache[MAXDATEFIELDS] = {NULL};
|
|
|
|
char *months[] = {"Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec", NULL};
|
|
|
|
char *days[] = {"Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday", NULL};
|
|
|
|
char *pgtypes_date_weekdays_short[] = {"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat", NULL};
|
|
|
|
char *pgtypes_date_months[] = {"January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December", NULL};
|
|
|
|
static const datetkn *
|
|
datebsearch(const char *key, const datetkn *base, unsigned int nel)
|
|
{
|
|
if (nel > 0)
|
|
{
|
|
const datetkn *last = base + nel - 1,
|
|
*position;
|
|
int result;
|
|
|
|
while (last >= base)
|
|
{
|
|
position = base + ((last - base) >> 1);
|
|
/* precheck the first character for a bit of extra speed */
|
|
result = (int) key[0] - (int) position->token[0];
|
|
if (result == 0)
|
|
{
|
|
/* use strncmp so that we match truncated tokens */
|
|
result = strncmp(key, position->token, TOKMAXLEN);
|
|
if (result == 0)
|
|
return position;
|
|
}
|
|
if (result < 0)
|
|
last = position - 1;
|
|
else
|
|
base = position + 1;
|
|
}
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
/* DecodeUnits()
|
|
* Decode text string using lookup table.
|
|
* This routine supports time interval decoding.
|
|
*/
|
|
int
|
|
DecodeUnits(int field, char *lowtoken, int *val)
|
|
{
|
|
int type;
|
|
const datetkn *tp;
|
|
|
|
/* use strncmp so that we match truncated tokens */
|
|
if (deltacache[field] != NULL &&
|
|
strncmp(lowtoken, deltacache[field]->token, TOKMAXLEN) == 0)
|
|
tp = deltacache[field];
|
|
else
|
|
tp = datebsearch(lowtoken, deltatktbl, szdeltatktbl);
|
|
deltacache[field] = tp;
|
|
if (tp == NULL)
|
|
{
|
|
type = UNKNOWN_FIELD;
|
|
*val = 0;
|
|
}
|
|
else
|
|
{
|
|
type = tp->type;
|
|
*val = tp->value;
|
|
}
|
|
|
|
return type;
|
|
} /* DecodeUnits() */
|
|
|
|
/*
|
|
* Calendar time to Julian date conversions.
|
|
* Julian date is commonly used in astronomical applications,
|
|
* since it is numerically accurate and computationally simple.
|
|
* The algorithms here will accurately convert between Julian day
|
|
* and calendar date for all non-negative Julian days
|
|
* (i.e. from Nov 24, -4713 on).
|
|
*
|
|
* These routines will be used by other date/time packages
|
|
* - thomas 97/02/25
|
|
*
|
|
* Rewritten to eliminate overflow problems. This now allows the
|
|
* routines to work correctly for all Julian day counts from
|
|
* 0 to 2147483647 (Nov 24, -4713 to Jun 3, 5874898) assuming
|
|
* a 32-bit integer. Longer types should also work to the limits
|
|
* of their precision.
|
|
*/
|
|
|
|
int
|
|
date2j(int y, int m, int d)
|
|
{
|
|
int julian;
|
|
int century;
|
|
|
|
if (m > 2)
|
|
{
|
|
m += 1;
|
|
y += 4800;
|
|
}
|
|
else
|
|
{
|
|
m += 13;
|
|
y += 4799;
|
|
}
|
|
|
|
century = y / 100;
|
|
julian = y * 365 - 32167;
|
|
julian += y / 4 - century + century / 4;
|
|
julian += 7834 * m / 256 + d;
|
|
|
|
return julian;
|
|
} /* date2j() */
|
|
|
|
void
|
|
j2date(int jd, int *year, int *month, int *day)
|
|
{
|
|
unsigned int julian;
|
|
unsigned int quad;
|
|
unsigned int extra;
|
|
int y;
|
|
|
|
julian = jd;
|
|
julian += 32044;
|
|
quad = julian / 146097;
|
|
extra = (julian - quad * 146097) * 4 + 3;
|
|
julian += 60 + quad * 3 + extra / 146097;
|
|
quad = julian / 1461;
|
|
julian -= quad * 1461;
|
|
y = julian * 4 / 1461;
|
|
julian = ((y != 0) ? (julian + 305) % 365 : (julian + 306) % 366) + 123;
|
|
y += quad * 4;
|
|
*year = y - 4800;
|
|
quad = julian * 2141 / 65536;
|
|
*day = julian - 7834 * quad / 256;
|
|
*month = (quad + 10) % 12 + 1;
|
|
|
|
return;
|
|
} /* j2date() */
|
|
|
|
/* DecodeSpecial()
|
|
* Decode text string using lookup table.
|
|
* Implement a cache lookup since it is likely that dates
|
|
* will be related in format.
|
|
*/
|
|
static int
|
|
DecodeSpecial(int field, char *lowtoken, int *val)
|
|
{
|
|
int type;
|
|
const datetkn *tp;
|
|
|
|
/* use strncmp so that we match truncated tokens */
|
|
if (datecache[field] != NULL &&
|
|
strncmp(lowtoken, datecache[field]->token, TOKMAXLEN) == 0)
|
|
tp = datecache[field];
|
|
else
|
|
{
|
|
tp = NULL;
|
|
if (!tp)
|
|
tp = datebsearch(lowtoken, datetktbl, szdatetktbl);
|
|
}
|
|
datecache[field] = tp;
|
|
if (tp == NULL)
|
|
{
|
|
type = UNKNOWN_FIELD;
|
|
*val = 0;
|
|
}
|
|
else
|
|
{
|
|
type = tp->type;
|
|
*val = tp->value;
|
|
}
|
|
|
|
return type;
|
|
} /* DecodeSpecial() */
|
|
|
|
/* EncodeDateOnly()
|
|
* Encode date as local time.
|
|
*/
|
|
void
|
|
EncodeDateOnly(struct tm *tm, int style, char *str, bool EuroDates)
|
|
{
|
|
Assert(tm->tm_mon >= 1 && tm->tm_mon <= MONTHS_PER_YEAR);
|
|
|
|
switch (style)
|
|
{
|
|
case USE_ISO_DATES:
|
|
/* compatible with ISO date formats */
|
|
if (tm->tm_year > 0)
|
|
sprintf(str, "%04d-%02d-%02d",
|
|
tm->tm_year, tm->tm_mon, tm->tm_mday);
|
|
else
|
|
sprintf(str, "%04d-%02d-%02d %s",
|
|
-(tm->tm_year - 1), tm->tm_mon, tm->tm_mday, "BC");
|
|
break;
|
|
|
|
case USE_SQL_DATES:
|
|
/* compatible with Oracle/Ingres date formats */
|
|
if (EuroDates)
|
|
sprintf(str, "%02d/%02d", tm->tm_mday, tm->tm_mon);
|
|
else
|
|
sprintf(str, "%02d/%02d", tm->tm_mon, tm->tm_mday);
|
|
if (tm->tm_year > 0)
|
|
sprintf(str + 5, "/%04d", tm->tm_year);
|
|
else
|
|
sprintf(str + 5, "/%04d %s", -(tm->tm_year - 1), "BC");
|
|
break;
|
|
|
|
case USE_GERMAN_DATES:
|
|
/* German-style date format */
|
|
sprintf(str, "%02d.%02d", tm->tm_mday, tm->tm_mon);
|
|
if (tm->tm_year > 0)
|
|
sprintf(str + 5, ".%04d", tm->tm_year);
|
|
else
|
|
sprintf(str + 5, ".%04d %s", -(tm->tm_year - 1), "BC");
|
|
break;
|
|
|
|
case USE_POSTGRES_DATES:
|
|
default:
|
|
/* traditional date-only style for Postgres */
|
|
if (EuroDates)
|
|
sprintf(str, "%02d-%02d", tm->tm_mday, tm->tm_mon);
|
|
else
|
|
sprintf(str, "%02d-%02d", tm->tm_mon, tm->tm_mday);
|
|
if (tm->tm_year > 0)
|
|
sprintf(str + 5, "-%04d", tm->tm_year);
|
|
else
|
|
sprintf(str + 5, "-%04d %s", -(tm->tm_year - 1), "BC");
|
|
break;
|
|
}
|
|
}
|
|
|
|
void
|
|
TrimTrailingZeros(char *str)
|
|
{
|
|
int len = strlen(str);
|
|
|
|
/* chop off trailing zeros... but leave at least 2 fractional digits */
|
|
while (*(str + len - 1) == '0' && *(str + len - 3) != '.')
|
|
{
|
|
len--;
|
|
*(str + len) = '\0';
|
|
}
|
|
}
|
|
|
|
/* EncodeDateTime()
|
|
* Encode date and time interpreted as local time.
|
|
*
|
|
* tm and fsec are the value to encode, print_tz determines whether to include
|
|
* a time zone (the difference between timestamp and timestamptz types), tz is
|
|
* the numeric time zone offset, tzn is the textual time zone, which if
|
|
* specified will be used instead of tz by some styles, style is the date
|
|
* style, str is where to write the output.
|
|
*
|
|
* Supported date styles:
|
|
* Postgres - day mon hh:mm:ss yyyy tz
|
|
* SQL - mm/dd/yyyy hh:mm:ss.ss tz
|
|
* ISO - yyyy-mm-dd hh:mm:ss+/-tz
|
|
* German - dd.mm.yyyy hh:mm:ss tz
|
|
* Variants (affects order of month and day for Postgres and SQL styles):
|
|
* US - mm/dd/yyyy
|
|
* European - dd/mm/yyyy
|
|
*/
|
|
void
|
|
EncodeDateTime(struct tm *tm, fsec_t fsec, bool print_tz, int tz, const char *tzn, int style, char *str, bool EuroDates)
|
|
{
|
|
int day,
|
|
hour,
|
|
min;
|
|
|
|
/*
|
|
* Negative tm_isdst means we have no valid time zone translation.
|
|
*/
|
|
if (tm->tm_isdst < 0)
|
|
print_tz = false;
|
|
|
|
switch (style)
|
|
{
|
|
case USE_ISO_DATES:
|
|
/* Compatible with ISO-8601 date formats */
|
|
|
|
sprintf(str, "%04d-%02d-%02d %02d:%02d",
|
|
(tm->tm_year > 0) ? tm->tm_year : -(tm->tm_year - 1),
|
|
tm->tm_mon, tm->tm_mday, tm->tm_hour, tm->tm_min);
|
|
|
|
/*
|
|
* Print fractional seconds if any. The field widths here should
|
|
* be at least equal to MAX_TIMESTAMP_PRECISION.
|
|
*/
|
|
if (fsec != 0)
|
|
{
|
|
sprintf(str + strlen(str), ":%02d.%06d", tm->tm_sec, fsec);
|
|
TrimTrailingZeros(str);
|
|
}
|
|
else
|
|
sprintf(str + strlen(str), ":%02d", tm->tm_sec);
|
|
|
|
if (tm->tm_year <= 0)
|
|
sprintf(str + strlen(str), " BC");
|
|
|
|
if (print_tz)
|
|
{
|
|
hour = -(tz / SECS_PER_HOUR);
|
|
min = (abs(tz) / MINS_PER_HOUR) % MINS_PER_HOUR;
|
|
if (min != 0)
|
|
sprintf(str + strlen(str), "%+03d:%02d", hour, min);
|
|
else
|
|
sprintf(str + strlen(str), "%+03d", hour);
|
|
}
|
|
break;
|
|
|
|
case USE_SQL_DATES:
|
|
/* Compatible with Oracle/Ingres date formats */
|
|
|
|
if (EuroDates)
|
|
sprintf(str, "%02d/%02d", tm->tm_mday, tm->tm_mon);
|
|
else
|
|
sprintf(str, "%02d/%02d", tm->tm_mon, tm->tm_mday);
|
|
|
|
sprintf(str + 5, "/%04d %02d:%02d",
|
|
(tm->tm_year > 0) ? tm->tm_year : -(tm->tm_year - 1),
|
|
tm->tm_hour, tm->tm_min);
|
|
|
|
/*
|
|
* Print fractional seconds if any. The field widths here should
|
|
* be at least equal to MAX_TIMESTAMP_PRECISION.
|
|
*/
|
|
if (fsec != 0)
|
|
{
|
|
sprintf(str + strlen(str), ":%02d.%06d", tm->tm_sec, fsec);
|
|
TrimTrailingZeros(str);
|
|
}
|
|
else
|
|
sprintf(str + strlen(str), ":%02d", tm->tm_sec);
|
|
|
|
if (tm->tm_year <= 0)
|
|
sprintf(str + strlen(str), " BC");
|
|
|
|
/*
|
|
* Note: the uses of %.*s in this function would be risky if the
|
|
* timezone names ever contain non-ASCII characters. However, all
|
|
* TZ abbreviations in the IANA database are plain ASCII.
|
|
*/
|
|
|
|
if (print_tz)
|
|
{
|
|
if (tzn)
|
|
sprintf(str + strlen(str), " %.*s", MAXTZLEN, tzn);
|
|
else
|
|
{
|
|
hour = -(tz / SECS_PER_HOUR);
|
|
min = (abs(tz) / MINS_PER_HOUR) % MINS_PER_HOUR;
|
|
if (min != 0)
|
|
sprintf(str + strlen(str), "%+03d:%02d", hour, min);
|
|
else
|
|
sprintf(str + strlen(str), "%+03d", hour);
|
|
}
|
|
}
|
|
break;
|
|
|
|
case USE_GERMAN_DATES:
|
|
/* German variant on European style */
|
|
|
|
sprintf(str, "%02d.%02d", tm->tm_mday, tm->tm_mon);
|
|
|
|
sprintf(str + 5, ".%04d %02d:%02d",
|
|
(tm->tm_year > 0) ? tm->tm_year : -(tm->tm_year - 1),
|
|
tm->tm_hour, tm->tm_min);
|
|
|
|
/*
|
|
* Print fractional seconds if any. The field widths here should
|
|
* be at least equal to MAX_TIMESTAMP_PRECISION.
|
|
*/
|
|
if (fsec != 0)
|
|
{
|
|
sprintf(str + strlen(str), ":%02d.%06d", tm->tm_sec, fsec);
|
|
TrimTrailingZeros(str);
|
|
}
|
|
else
|
|
sprintf(str + strlen(str), ":%02d", tm->tm_sec);
|
|
|
|
if (tm->tm_year <= 0)
|
|
sprintf(str + strlen(str), " BC");
|
|
|
|
if (print_tz)
|
|
{
|
|
if (tzn)
|
|
sprintf(str + strlen(str), " %.*s", MAXTZLEN, tzn);
|
|
else
|
|
{
|
|
hour = -(tz / SECS_PER_HOUR);
|
|
min = (abs(tz) / MINS_PER_HOUR) % MINS_PER_HOUR;
|
|
if (min != 0)
|
|
sprintf(str + strlen(str), "%+03d:%02d", hour, min);
|
|
else
|
|
sprintf(str + strlen(str), "%+03d", hour);
|
|
}
|
|
}
|
|
break;
|
|
|
|
case USE_POSTGRES_DATES:
|
|
default:
|
|
/* Backward-compatible with traditional Postgres abstime dates */
|
|
|
|
day = date2j(tm->tm_year, tm->tm_mon, tm->tm_mday);
|
|
tm->tm_wday = (int) ((day + date2j(2000, 1, 1) + 1) % 7);
|
|
|
|
memcpy(str, days[tm->tm_wday], 3);
|
|
strcpy(str + 3, " ");
|
|
|
|
if (EuroDates)
|
|
sprintf(str + 4, "%02d %3s", tm->tm_mday, months[tm->tm_mon - 1]);
|
|
else
|
|
sprintf(str + 4, "%3s %02d", months[tm->tm_mon - 1], tm->tm_mday);
|
|
|
|
sprintf(str + 10, " %02d:%02d", tm->tm_hour, tm->tm_min);
|
|
|
|
/*
|
|
* Print fractional seconds if any. The field widths here should
|
|
* be at least equal to MAX_TIMESTAMP_PRECISION.
|
|
*/
|
|
if (fsec != 0)
|
|
{
|
|
sprintf(str + strlen(str), ":%02d.%06d", tm->tm_sec, fsec);
|
|
TrimTrailingZeros(str);
|
|
}
|
|
else
|
|
sprintf(str + strlen(str), ":%02d", tm->tm_sec);
|
|
|
|
sprintf(str + strlen(str), " %04d",
|
|
(tm->tm_year > 0) ? tm->tm_year : -(tm->tm_year - 1));
|
|
if (tm->tm_year <= 0)
|
|
sprintf(str + strlen(str), " BC");
|
|
|
|
if (print_tz)
|
|
{
|
|
if (tzn)
|
|
sprintf(str + strlen(str), " %.*s", MAXTZLEN, tzn);
|
|
else
|
|
{
|
|
/*
|
|
* We have a time zone, but no string version. Use the
|
|
* numeric form, but be sure to include a leading space to
|
|
* avoid formatting something which would be rejected by
|
|
* the date/time parser later. - thomas 2001-10-19
|
|
*/
|
|
hour = -(tz / SECS_PER_HOUR);
|
|
min = (abs(tz) / MINS_PER_HOUR) % MINS_PER_HOUR;
|
|
if (min != 0)
|
|
sprintf(str + strlen(str), " %+03d:%02d", hour, min);
|
|
else
|
|
sprintf(str + strlen(str), " %+03d", hour);
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
int
|
|
GetEpochTime(struct tm *tm)
|
|
{
|
|
struct tm *t0;
|
|
time_t epoch = 0;
|
|
|
|
t0 = gmtime(&epoch);
|
|
|
|
if (t0)
|
|
{
|
|
tm->tm_year = t0->tm_year + 1900;
|
|
tm->tm_mon = t0->tm_mon + 1;
|
|
tm->tm_mday = t0->tm_mday;
|
|
tm->tm_hour = t0->tm_hour;
|
|
tm->tm_min = t0->tm_min;
|
|
tm->tm_sec = t0->tm_sec;
|
|
|
|
return 0;
|
|
}
|
|
|
|
return -1;
|
|
} /* GetEpochTime() */
|
|
|
|
static void
|
|
abstime2tm(AbsoluteTime _time, int *tzp, struct tm *tm, char **tzn)
|
|
{
|
|
time_t time = (time_t) _time;
|
|
struct tm *tx;
|
|
|
|
errno = 0;
|
|
if (tzp != NULL)
|
|
tx = localtime((time_t *) &time);
|
|
else
|
|
tx = gmtime((time_t *) &time);
|
|
|
|
if (!tx)
|
|
{
|
|
errno = PGTYPES_TS_BAD_TIMESTAMP;
|
|
return;
|
|
}
|
|
|
|
tm->tm_year = tx->tm_year + 1900;
|
|
tm->tm_mon = tx->tm_mon + 1;
|
|
tm->tm_mday = tx->tm_mday;
|
|
tm->tm_hour = tx->tm_hour;
|
|
tm->tm_min = tx->tm_min;
|
|
tm->tm_sec = tx->tm_sec;
|
|
tm->tm_isdst = tx->tm_isdst;
|
|
|
|
#if defined(HAVE_STRUCT_TM_TM_ZONE)
|
|
tm->tm_gmtoff = tx->tm_gmtoff;
|
|
tm->tm_zone = tx->tm_zone;
|
|
|
|
if (tzp != NULL)
|
|
{
|
|
/*
|
|
* We have a brute force time zone per SQL99? Then use it without
|
|
* change since we have already rotated to the time zone.
|
|
*/
|
|
*tzp = -tm->tm_gmtoff; /* tm_gmtoff is Sun/DEC-ism */
|
|
|
|
/*
|
|
* FreeBSD man pages indicate that this should work - tgl 97/04/23
|
|
*/
|
|
if (tzn != NULL)
|
|
{
|
|
/*
|
|
* Copy no more than MAXTZLEN bytes of timezone to tzn, in case it
|
|
* contains an error message, which doesn't fit in the buffer
|
|
*/
|
|
StrNCpy(*tzn, tm->tm_zone, MAXTZLEN + 1);
|
|
if (strlen(tm->tm_zone) > MAXTZLEN)
|
|
tm->tm_isdst = -1;
|
|
}
|
|
}
|
|
else
|
|
tm->tm_isdst = -1;
|
|
#elif defined(HAVE_INT_TIMEZONE)
|
|
if (tzp != NULL)
|
|
{
|
|
*tzp = (tm->tm_isdst > 0) ? TIMEZONE_GLOBAL - SECS_PER_HOUR : TIMEZONE_GLOBAL;
|
|
|
|
if (tzn != NULL)
|
|
{
|
|
/*
|
|
* Copy no more than MAXTZLEN bytes of timezone to tzn, in case it
|
|
* contains an error message, which doesn't fit in the buffer
|
|
*/
|
|
StrNCpy(*tzn, TZNAME_GLOBAL[tm->tm_isdst], MAXTZLEN + 1);
|
|
if (strlen(TZNAME_GLOBAL[tm->tm_isdst]) > MAXTZLEN)
|
|
tm->tm_isdst = -1;
|
|
}
|
|
}
|
|
else
|
|
tm->tm_isdst = -1;
|
|
#else /* not (HAVE_STRUCT_TM_TM_ZONE || HAVE_INT_TIMEZONE) */
|
|
if (tzp != NULL)
|
|
{
|
|
/* default to UTC */
|
|
*tzp = 0;
|
|
if (tzn != NULL)
|
|
*tzn = NULL;
|
|
}
|
|
else
|
|
tm->tm_isdst = -1;
|
|
#endif
|
|
}
|
|
|
|
void
|
|
GetCurrentDateTime(struct tm *tm)
|
|
{
|
|
int tz;
|
|
|
|
abstime2tm(time(NULL), &tz, tm, NULL);
|
|
}
|
|
|
|
void
|
|
dt2time(double jd, int *hour, int *min, int *sec, fsec_t *fsec)
|
|
{
|
|
int64 time;
|
|
|
|
time = jd;
|
|
*hour = time / USECS_PER_HOUR;
|
|
time -= (*hour) * USECS_PER_HOUR;
|
|
*min = time / USECS_PER_MINUTE;
|
|
time -= (*min) * USECS_PER_MINUTE;
|
|
*sec = time / USECS_PER_SEC;
|
|
*fsec = time - (*sec * USECS_PER_SEC);
|
|
} /* dt2time() */
|
|
|
|
|
|
|
|
/* DecodeNumberField()
|
|
* Interpret numeric string as a concatenated date or time field.
|
|
* Use the context of previously decoded fields to help with
|
|
* the interpretation.
|
|
*/
|
|
static int
|
|
DecodeNumberField(int len, char *str, int fmask,
|
|
int *tmask, struct tm *tm, fsec_t *fsec, bool *is2digits)
|
|
{
|
|
char *cp;
|
|
|
|
/*
|
|
* Have a decimal point? Then this is a date or something with a seconds
|
|
* field...
|
|
*/
|
|
if ((cp = strchr(str, '.')) != NULL)
|
|
{
|
|
char fstr[7];
|
|
int i;
|
|
|
|
cp++;
|
|
|
|
/*
|
|
* OK, we have at most six digits to care about. Let's construct a
|
|
* string with those digits, zero-padded on the right, and then do the
|
|
* conversion to an integer.
|
|
*
|
|
* XXX This truncates the seventh digit, unlike rounding it as the
|
|
* backend does.
|
|
*/
|
|
for (i = 0; i < 6; i++)
|
|
fstr[i] = *cp != '\0' ? *cp++ : '0';
|
|
fstr[i] = '\0';
|
|
*fsec = strtoint(fstr, NULL, 10);
|
|
*cp = '\0';
|
|
len = strlen(str);
|
|
}
|
|
/* No decimal point and no complete date yet? */
|
|
else if ((fmask & DTK_DATE_M) != DTK_DATE_M)
|
|
{
|
|
/* yyyymmdd? */
|
|
if (len == 8)
|
|
{
|
|
*tmask = DTK_DATE_M;
|
|
|
|
tm->tm_mday = atoi(str + 6);
|
|
*(str + 6) = '\0';
|
|
tm->tm_mon = atoi(str + 4);
|
|
*(str + 4) = '\0';
|
|
tm->tm_year = atoi(str + 0);
|
|
|
|
return DTK_DATE;
|
|
}
|
|
/* yymmdd? */
|
|
else if (len == 6)
|
|
{
|
|
*tmask = DTK_DATE_M;
|
|
tm->tm_mday = atoi(str + 4);
|
|
*(str + 4) = '\0';
|
|
tm->tm_mon = atoi(str + 2);
|
|
*(str + 2) = '\0';
|
|
tm->tm_year = atoi(str + 0);
|
|
*is2digits = true;
|
|
|
|
return DTK_DATE;
|
|
}
|
|
/* yyddd? */
|
|
else if (len == 5)
|
|
{
|
|
*tmask = DTK_DATE_M;
|
|
tm->tm_mday = atoi(str + 2);
|
|
*(str + 2) = '\0';
|
|
tm->tm_mon = 1;
|
|
tm->tm_year = atoi(str + 0);
|
|
*is2digits = true;
|
|
|
|
return DTK_DATE;
|
|
}
|
|
}
|
|
|
|
/* not all time fields are specified? */
|
|
if ((fmask & DTK_TIME_M) != DTK_TIME_M)
|
|
{
|
|
/* hhmmss */
|
|
if (len == 6)
|
|
{
|
|
*tmask = DTK_TIME_M;
|
|
tm->tm_sec = atoi(str + 4);
|
|
*(str + 4) = '\0';
|
|
tm->tm_min = atoi(str + 2);
|
|
*(str + 2) = '\0';
|
|
tm->tm_hour = atoi(str + 0);
|
|
|
|
return DTK_TIME;
|
|
}
|
|
/* hhmm? */
|
|
else if (len == 4)
|
|
{
|
|
*tmask = DTK_TIME_M;
|
|
tm->tm_sec = 0;
|
|
tm->tm_min = atoi(str + 2);
|
|
*(str + 2) = '\0';
|
|
tm->tm_hour = atoi(str + 0);
|
|
|
|
return DTK_TIME;
|
|
}
|
|
}
|
|
|
|
return -1;
|
|
} /* DecodeNumberField() */
|
|
|
|
|
|
/* DecodeNumber()
|
|
* Interpret plain numeric field as a date value in context.
|
|
*/
|
|
static int
|
|
DecodeNumber(int flen, char *str, int fmask,
|
|
int *tmask, struct tm *tm, fsec_t *fsec, bool *is2digits, bool EuroDates)
|
|
{
|
|
int val;
|
|
char *cp;
|
|
|
|
*tmask = 0;
|
|
|
|
val = strtoint(str, &cp, 10);
|
|
if (cp == str)
|
|
return -1;
|
|
|
|
if (*cp == '.')
|
|
{
|
|
/*
|
|
* More than two digits? Then could be a date or a run-together time:
|
|
* 2001.360 20011225 040506.789
|
|
*/
|
|
if (cp - str > 2)
|
|
return DecodeNumberField(flen, str, (fmask | DTK_DATE_M),
|
|
tmask, tm, fsec, is2digits);
|
|
|
|
*fsec = strtod(cp, &cp);
|
|
if (*cp != '\0')
|
|
return -1;
|
|
}
|
|
else if (*cp != '\0')
|
|
return -1;
|
|
|
|
/* Special case day of year? */
|
|
if (flen == 3 && (fmask & DTK_M(YEAR)) && val >= 1 && val <= 366)
|
|
{
|
|
*tmask = (DTK_M(DOY) | DTK_M(MONTH) | DTK_M(DAY));
|
|
tm->tm_yday = val;
|
|
j2date(date2j(tm->tm_year, 1, 1) + tm->tm_yday - 1,
|
|
&tm->tm_year, &tm->tm_mon, &tm->tm_mday);
|
|
}
|
|
|
|
/***
|
|
* Enough digits to be unequivocal year? Used to test for 4 digits or
|
|
* more, but we now test first for a three-digit doy so anything
|
|
* bigger than two digits had better be an explicit year.
|
|
* - thomas 1999-01-09
|
|
* Back to requiring a 4 digit year. We accept a two digit
|
|
* year farther down. - thomas 2000-03-28
|
|
***/
|
|
else if (flen >= 4)
|
|
{
|
|
*tmask = DTK_M(YEAR);
|
|
|
|
/* already have a year? then see if we can substitute... */
|
|
if ((fmask & DTK_M(YEAR)) && !(fmask & DTK_M(DAY)) &&
|
|
tm->tm_year >= 1 && tm->tm_year <= 31)
|
|
{
|
|
tm->tm_mday = tm->tm_year;
|
|
*tmask = DTK_M(DAY);
|
|
}
|
|
|
|
tm->tm_year = val;
|
|
}
|
|
|
|
/* already have year? then could be month */
|
|
else if ((fmask & DTK_M(YEAR)) && !(fmask & DTK_M(MONTH)) && val >= 1 && val <= MONTHS_PER_YEAR)
|
|
{
|
|
*tmask = DTK_M(MONTH);
|
|
tm->tm_mon = val;
|
|
}
|
|
/* no year and EuroDates enabled? then could be day */
|
|
else if ((EuroDates || (fmask & DTK_M(MONTH))) &&
|
|
!(fmask & DTK_M(YEAR)) && !(fmask & DTK_M(DAY)) &&
|
|
val >= 1 && val <= 31)
|
|
{
|
|
*tmask = DTK_M(DAY);
|
|
tm->tm_mday = val;
|
|
}
|
|
else if (!(fmask & DTK_M(MONTH)) && val >= 1 && val <= MONTHS_PER_YEAR)
|
|
{
|
|
*tmask = DTK_M(MONTH);
|
|
tm->tm_mon = val;
|
|
}
|
|
else if (!(fmask & DTK_M(DAY)) && val >= 1 && val <= 31)
|
|
{
|
|
*tmask = DTK_M(DAY);
|
|
tm->tm_mday = val;
|
|
}
|
|
|
|
/*
|
|
* Check for 2 or 4 or more digits, but currently we reach here only if
|
|
* two digits. - thomas 2000-03-28
|
|
*/
|
|
else if (!(fmask & DTK_M(YEAR)) && (flen >= 4 || flen == 2))
|
|
{
|
|
*tmask = DTK_M(YEAR);
|
|
tm->tm_year = val;
|
|
|
|
/* adjust ONLY if exactly two digits... */
|
|
*is2digits = (flen == 2);
|
|
}
|
|
else
|
|
return -1;
|
|
|
|
return 0;
|
|
} /* DecodeNumber() */
|
|
|
|
/* DecodeDate()
|
|
* Decode date string which includes delimiters.
|
|
* Insist on a complete set of fields.
|
|
*/
|
|
static int
|
|
DecodeDate(char *str, int fmask, int *tmask, struct tm *tm, bool EuroDates)
|
|
{
|
|
fsec_t fsec;
|
|
|
|
int nf = 0;
|
|
int i,
|
|
len;
|
|
bool bc = false;
|
|
bool is2digits = false;
|
|
int type,
|
|
val,
|
|
dmask = 0;
|
|
char *field[MAXDATEFIELDS];
|
|
|
|
/* parse this string... */
|
|
while (*str != '\0' && nf < MAXDATEFIELDS)
|
|
{
|
|
/* skip field separators */
|
|
while (!isalnum((unsigned char) *str))
|
|
str++;
|
|
|
|
field[nf] = str;
|
|
if (isdigit((unsigned char) *str))
|
|
{
|
|
while (isdigit((unsigned char) *str))
|
|
str++;
|
|
}
|
|
else if (isalpha((unsigned char) *str))
|
|
{
|
|
while (isalpha((unsigned char) *str))
|
|
str++;
|
|
}
|
|
|
|
/* Just get rid of any non-digit, non-alpha characters... */
|
|
if (*str != '\0')
|
|
*str++ = '\0';
|
|
nf++;
|
|
}
|
|
|
|
#if 0
|
|
/* don't allow too many fields */
|
|
if (nf > 3)
|
|
return -1;
|
|
#endif
|
|
|
|
*tmask = 0;
|
|
|
|
/* look first for text fields, since that will be unambiguous month */
|
|
for (i = 0; i < nf; i++)
|
|
{
|
|
if (isalpha((unsigned char) *field[i]))
|
|
{
|
|
type = DecodeSpecial(i, field[i], &val);
|
|
if (type == IGNORE_DTF)
|
|
continue;
|
|
|
|
dmask = DTK_M(type);
|
|
switch (type)
|
|
{
|
|
case MONTH:
|
|
tm->tm_mon = val;
|
|
break;
|
|
|
|
case ADBC:
|
|
bc = (val == BC);
|
|
break;
|
|
|
|
default:
|
|
return -1;
|
|
}
|
|
if (fmask & dmask)
|
|
return -1;
|
|
|
|
fmask |= dmask;
|
|
*tmask |= dmask;
|
|
|
|
/* mark this field as being completed */
|
|
field[i] = NULL;
|
|
}
|
|
}
|
|
|
|
/* now pick up remaining numeric fields */
|
|
for (i = 0; i < nf; i++)
|
|
{
|
|
if (field[i] == NULL)
|
|
continue;
|
|
|
|
if ((len = strlen(field[i])) <= 0)
|
|
return -1;
|
|
|
|
if (DecodeNumber(len, field[i], fmask, &dmask, tm, &fsec, &is2digits, EuroDates) != 0)
|
|
return -1;
|
|
|
|
if (fmask & dmask)
|
|
return -1;
|
|
|
|
fmask |= dmask;
|
|
*tmask |= dmask;
|
|
}
|
|
|
|
if ((fmask & ~(DTK_M(DOY) | DTK_M(TZ))) != DTK_DATE_M)
|
|
return -1;
|
|
|
|
/* there is no year zero in AD/BC notation; i.e. "1 BC" == year 0 */
|
|
if (bc)
|
|
{
|
|
if (tm->tm_year > 0)
|
|
tm->tm_year = -(tm->tm_year - 1);
|
|
else
|
|
return -1;
|
|
}
|
|
else if (is2digits)
|
|
{
|
|
if (tm->tm_year < 70)
|
|
tm->tm_year += 2000;
|
|
else if (tm->tm_year < 100)
|
|
tm->tm_year += 1900;
|
|
}
|
|
|
|
return 0;
|
|
} /* DecodeDate() */
|
|
|
|
|
|
/* DecodeTime()
|
|
* Decode time string which includes delimiters.
|
|
* Only check the lower limit on hours, since this same code
|
|
* can be used to represent time spans.
|
|
*/
|
|
int
|
|
DecodeTime(char *str, int *tmask, struct tm *tm, fsec_t *fsec)
|
|
{
|
|
char *cp;
|
|
|
|
*tmask = DTK_TIME_M;
|
|
|
|
tm->tm_hour = strtoint(str, &cp, 10);
|
|
if (*cp != ':')
|
|
return -1;
|
|
str = cp + 1;
|
|
tm->tm_min = strtoint(str, &cp, 10);
|
|
if (*cp == '\0')
|
|
{
|
|
tm->tm_sec = 0;
|
|
*fsec = 0;
|
|
}
|
|
else if (*cp != ':')
|
|
return -1;
|
|
else
|
|
{
|
|
str = cp + 1;
|
|
tm->tm_sec = strtoint(str, &cp, 10);
|
|
if (*cp == '\0')
|
|
*fsec = 0;
|
|
else if (*cp == '.')
|
|
{
|
|
char fstr[7];
|
|
int i;
|
|
|
|
cp++;
|
|
|
|
/*
|
|
* OK, we have at most six digits to care about. Let's construct a
|
|
* string with those digits, zero-padded on the right, and then do
|
|
* the conversion to an integer.
|
|
*
|
|
* XXX This truncates the seventh digit, unlike rounding it as the
|
|
* backend does.
|
|
*/
|
|
for (i = 0; i < 6; i++)
|
|
fstr[i] = *cp != '\0' ? *cp++ : '0';
|
|
fstr[i] = '\0';
|
|
*fsec = strtoint(fstr, &cp, 10);
|
|
if (*cp != '\0')
|
|
return -1;
|
|
}
|
|
else
|
|
return -1;
|
|
}
|
|
|
|
/* do a sanity check */
|
|
if (tm->tm_hour < 0 || tm->tm_min < 0 || tm->tm_min > 59 ||
|
|
tm->tm_sec < 0 || tm->tm_sec > 59 || *fsec >= USECS_PER_SEC)
|
|
return -1;
|
|
|
|
return 0;
|
|
} /* DecodeTime() */
|
|
|
|
/* DecodeTimezone()
|
|
* Interpret string as a numeric timezone.
|
|
*
|
|
* Note: we allow timezone offsets up to 13:59. There are places that
|
|
* use +1300 summer time.
|
|
*/
|
|
static int
|
|
DecodeTimezone(char *str, int *tzp)
|
|
{
|
|
int tz;
|
|
int hr,
|
|
min;
|
|
char *cp;
|
|
int len;
|
|
|
|
/* assume leading character is "+" or "-" */
|
|
hr = strtoint(str + 1, &cp, 10);
|
|
|
|
/* explicit delimiter? */
|
|
if (*cp == ':')
|
|
min = strtoint(cp + 1, &cp, 10);
|
|
/* otherwise, might have run things together... */
|
|
else if (*cp == '\0' && (len = strlen(str)) > 3)
|
|
{
|
|
min = strtoint(str + len - 2, &cp, 10);
|
|
if (min < 0 || min >= 60)
|
|
return -1;
|
|
|
|
*(str + len - 2) = '\0';
|
|
hr = strtoint(str + 1, &cp, 10);
|
|
if (hr < 0 || hr > 13)
|
|
return -1;
|
|
}
|
|
else
|
|
min = 0;
|
|
|
|
tz = (hr * MINS_PER_HOUR + min) * SECS_PER_MINUTE;
|
|
if (*str == '-')
|
|
tz = -tz;
|
|
|
|
*tzp = -tz;
|
|
return *cp != '\0';
|
|
} /* DecodeTimezone() */
|
|
|
|
|
|
/* DecodePosixTimezone()
|
|
* Interpret string as a POSIX-compatible timezone:
|
|
* PST-hh:mm
|
|
* PST+h
|
|
* - thomas 2000-03-15
|
|
*/
|
|
static int
|
|
DecodePosixTimezone(char *str, int *tzp)
|
|
{
|
|
int val,
|
|
tz;
|
|
int type;
|
|
char *cp;
|
|
char delim;
|
|
|
|
cp = str;
|
|
while (*cp != '\0' && isalpha((unsigned char) *cp))
|
|
cp++;
|
|
|
|
if (DecodeTimezone(cp, &tz) != 0)
|
|
return -1;
|
|
|
|
delim = *cp;
|
|
*cp = '\0';
|
|
type = DecodeSpecial(MAXDATEFIELDS - 1, str, &val);
|
|
*cp = delim;
|
|
|
|
switch (type)
|
|
{
|
|
case DTZ:
|
|
case TZ:
|
|
*tzp = -(val + tz);
|
|
break;
|
|
|
|
default:
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
} /* DecodePosixTimezone() */
|
|
|
|
/* ParseDateTime()
|
|
* Break string into tokens based on a date/time context.
|
|
* Several field types are assigned:
|
|
* DTK_NUMBER - digits and (possibly) a decimal point
|
|
* DTK_DATE - digits and two delimiters, or digits and text
|
|
* DTK_TIME - digits, colon delimiters, and possibly a decimal point
|
|
* DTK_STRING - text (no digits)
|
|
* DTK_SPECIAL - leading "+" or "-" followed by text
|
|
* DTK_TZ - leading "+" or "-" followed by digits
|
|
* Note that some field types can hold unexpected items:
|
|
* DTK_NUMBER can hold date fields (yy.ddd)
|
|
* DTK_STRING can hold months (January) and time zones (PST)
|
|
* DTK_DATE can hold Posix time zones (GMT-8)
|
|
*
|
|
* The "lowstr" work buffer must have at least strlen(timestr) + MAXDATEFIELDS
|
|
* bytes of space. On output, field[] entries will point into it.
|
|
* The field[] and ftype[] arrays must have at least MAXDATEFIELDS entries.
|
|
*/
|
|
int
|
|
ParseDateTime(char *timestr, char *lowstr,
|
|
char **field, int *ftype, int *numfields, char **endstr)
|
|
{
|
|
int nf = 0;
|
|
char *lp = lowstr;
|
|
|
|
*endstr = timestr;
|
|
/* outer loop through fields */
|
|
while (*(*endstr) != '\0')
|
|
{
|
|
/* Record start of current field */
|
|
if (nf >= MAXDATEFIELDS)
|
|
return -1;
|
|
field[nf] = lp;
|
|
|
|
/* leading digit? then date or time */
|
|
if (isdigit((unsigned char) *(*endstr)))
|
|
{
|
|
*lp++ = *(*endstr)++;
|
|
while (isdigit((unsigned char) *(*endstr)))
|
|
*lp++ = *(*endstr)++;
|
|
|
|
/* time field? */
|
|
if (*(*endstr) == ':')
|
|
{
|
|
ftype[nf] = DTK_TIME;
|
|
*lp++ = *(*endstr)++;
|
|
while (isdigit((unsigned char) *(*endstr)) ||
|
|
(*(*endstr) == ':') || (*(*endstr) == '.'))
|
|
*lp++ = *(*endstr)++;
|
|
}
|
|
/* date field? allow embedded text month */
|
|
else if (*(*endstr) == '-' || *(*endstr) == '/' || *(*endstr) == '.')
|
|
{
|
|
/* save delimiting character to use later */
|
|
char *dp = (*endstr);
|
|
|
|
*lp++ = *(*endstr)++;
|
|
/* second field is all digits? then no embedded text month */
|
|
if (isdigit((unsigned char) *(*endstr)))
|
|
{
|
|
ftype[nf] = (*dp == '.') ? DTK_NUMBER : DTK_DATE;
|
|
while (isdigit((unsigned char) *(*endstr)))
|
|
*lp++ = *(*endstr)++;
|
|
|
|
/*
|
|
* insist that the delimiters match to get a three-field
|
|
* date.
|
|
*/
|
|
if (*(*endstr) == *dp)
|
|
{
|
|
ftype[nf] = DTK_DATE;
|
|
*lp++ = *(*endstr)++;
|
|
while (isdigit((unsigned char) *(*endstr)) || (*(*endstr) == *dp))
|
|
*lp++ = *(*endstr)++;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
ftype[nf] = DTK_DATE;
|
|
while (isalnum((unsigned char) *(*endstr)) || (*(*endstr) == *dp))
|
|
*lp++ = pg_tolower((unsigned char) *(*endstr)++);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* otherwise, number only and will determine year, month, day, or
|
|
* concatenated fields later...
|
|
*/
|
|
else
|
|
ftype[nf] = DTK_NUMBER;
|
|
}
|
|
/* Leading decimal point? Then fractional seconds... */
|
|
else if (*(*endstr) == '.')
|
|
{
|
|
*lp++ = *(*endstr)++;
|
|
while (isdigit((unsigned char) *(*endstr)))
|
|
*lp++ = *(*endstr)++;
|
|
|
|
ftype[nf] = DTK_NUMBER;
|
|
}
|
|
|
|
/*
|
|
* text? then date string, month, day of week, special, or timezone
|
|
*/
|
|
else if (isalpha((unsigned char) *(*endstr)))
|
|
{
|
|
ftype[nf] = DTK_STRING;
|
|
*lp++ = pg_tolower((unsigned char) *(*endstr)++);
|
|
while (isalpha((unsigned char) *(*endstr)))
|
|
*lp++ = pg_tolower((unsigned char) *(*endstr)++);
|
|
|
|
/*
|
|
* Full date string with leading text month? Could also be a POSIX
|
|
* time zone...
|
|
*/
|
|
if (*(*endstr) == '-' || *(*endstr) == '/' || *(*endstr) == '.')
|
|
{
|
|
char *dp = (*endstr);
|
|
|
|
ftype[nf] = DTK_DATE;
|
|
*lp++ = *(*endstr)++;
|
|
while (isdigit((unsigned char) *(*endstr)) || *(*endstr) == *dp)
|
|
*lp++ = *(*endstr)++;
|
|
}
|
|
}
|
|
/* skip leading spaces */
|
|
else if (isspace((unsigned char) *(*endstr)))
|
|
{
|
|
(*endstr)++;
|
|
continue;
|
|
}
|
|
/* sign? then special or numeric timezone */
|
|
else if (*(*endstr) == '+' || *(*endstr) == '-')
|
|
{
|
|
*lp++ = *(*endstr)++;
|
|
/* soak up leading whitespace */
|
|
while (isspace((unsigned char) *(*endstr)))
|
|
(*endstr)++;
|
|
/* numeric timezone? */
|
|
if (isdigit((unsigned char) *(*endstr)))
|
|
{
|
|
ftype[nf] = DTK_TZ;
|
|
*lp++ = *(*endstr)++;
|
|
while (isdigit((unsigned char) *(*endstr)) ||
|
|
(*(*endstr) == ':') || (*(*endstr) == '.'))
|
|
*lp++ = *(*endstr)++;
|
|
}
|
|
/* special? */
|
|
else if (isalpha((unsigned char) *(*endstr)))
|
|
{
|
|
ftype[nf] = DTK_SPECIAL;
|
|
*lp++ = pg_tolower((unsigned char) *(*endstr)++);
|
|
while (isalpha((unsigned char) *(*endstr)))
|
|
*lp++ = pg_tolower((unsigned char) *(*endstr)++);
|
|
}
|
|
/* otherwise something wrong... */
|
|
else
|
|
return -1;
|
|
}
|
|
/* ignore punctuation but use as delimiter */
|
|
else if (ispunct((unsigned char) *(*endstr)))
|
|
{
|
|
(*endstr)++;
|
|
continue;
|
|
|
|
}
|
|
/* otherwise, something is not right... */
|
|
else
|
|
return -1;
|
|
|
|
/* force in a delimiter after each field */
|
|
*lp++ = '\0';
|
|
nf++;
|
|
}
|
|
|
|
*numfields = nf;
|
|
|
|
return 0;
|
|
} /* ParseDateTime() */
|
|
|
|
|
|
/* DecodeDateTime()
|
|
* Interpret previously parsed fields for general date and time.
|
|
* Return 0 if full date, 1 if only time, and -1 if problems.
|
|
* External format(s):
|
|
* "<weekday> <month>-<day>-<year> <hour>:<minute>:<second>"
|
|
* "Fri Feb-7-1997 15:23:27"
|
|
* "Feb-7-1997 15:23:27"
|
|
* "2-7-1997 15:23:27"
|
|
* "1997-2-7 15:23:27"
|
|
* "1997.038 15:23:27" (day of year 1-366)
|
|
* Also supports input in compact time:
|
|
* "970207 152327"
|
|
* "97038 152327"
|
|
* "20011225T040506.789-07"
|
|
*
|
|
* Use the system-provided functions to get the current time zone
|
|
* if not specified in the input string.
|
|
* If the date is outside the time_t system-supported time range,
|
|
* then assume UTC time zone. - thomas 1997-05-27
|
|
*/
|
|
int
|
|
DecodeDateTime(char **field, int *ftype, int nf,
|
|
int *dtype, struct tm *tm, fsec_t *fsec, bool EuroDates)
|
|
{
|
|
int fmask = 0,
|
|
tmask,
|
|
type;
|
|
int ptype = 0; /* "prefix type" for ISO y2001m02d04 format */
|
|
int i;
|
|
int val;
|
|
int mer = HR24;
|
|
bool haveTextMonth = false;
|
|
bool is2digits = false;
|
|
bool bc = false;
|
|
int t = 0;
|
|
int *tzp = &t;
|
|
|
|
/***
|
|
* We'll insist on at least all of the date fields, but initialize the
|
|
* remaining fields in case they are not set later...
|
|
***/
|
|
*dtype = DTK_DATE;
|
|
tm->tm_hour = 0;
|
|
tm->tm_min = 0;
|
|
tm->tm_sec = 0;
|
|
*fsec = 0;
|
|
/* don't know daylight savings time status apriori */
|
|
tm->tm_isdst = -1;
|
|
if (tzp != NULL)
|
|
*tzp = 0;
|
|
|
|
for (i = 0; i < nf; i++)
|
|
{
|
|
switch (ftype[i])
|
|
{
|
|
case DTK_DATE:
|
|
/***
|
|
* Integral julian day with attached time zone?
|
|
* All other forms with JD will be separated into
|
|
* distinct fields, so we handle just this case here.
|
|
***/
|
|
if (ptype == DTK_JULIAN)
|
|
{
|
|
char *cp;
|
|
int val;
|
|
|
|
if (tzp == NULL)
|
|
return -1;
|
|
|
|
val = strtoint(field[i], &cp, 10);
|
|
if (*cp != '-')
|
|
return -1;
|
|
|
|
j2date(val, &tm->tm_year, &tm->tm_mon, &tm->tm_mday);
|
|
/* Get the time zone from the end of the string */
|
|
if (DecodeTimezone(cp, tzp) != 0)
|
|
return -1;
|
|
|
|
tmask = DTK_DATE_M | DTK_TIME_M | DTK_M(TZ);
|
|
ptype = 0;
|
|
break;
|
|
}
|
|
/***
|
|
* Already have a date? Then this might be a POSIX time
|
|
* zone with an embedded dash (e.g. "PST-3" == "EST") or
|
|
* a run-together time with trailing time zone (e.g. hhmmss-zz).
|
|
* - thomas 2001-12-25
|
|
***/
|
|
else if (((fmask & DTK_DATE_M) == DTK_DATE_M)
|
|
|| (ptype != 0))
|
|
{
|
|
/* No time zone accepted? Then quit... */
|
|
if (tzp == NULL)
|
|
return -1;
|
|
|
|
if (isdigit((unsigned char) *field[i]) || ptype != 0)
|
|
{
|
|
char *cp;
|
|
|
|
if (ptype != 0)
|
|
{
|
|
/* Sanity check; should not fail this test */
|
|
if (ptype != DTK_TIME)
|
|
return -1;
|
|
ptype = 0;
|
|
}
|
|
|
|
/*
|
|
* Starts with a digit but we already have a time
|
|
* field? Then we are in trouble with a date and time
|
|
* already...
|
|
*/
|
|
if ((fmask & DTK_TIME_M) == DTK_TIME_M)
|
|
return -1;
|
|
|
|
if ((cp = strchr(field[i], '-')) == NULL)
|
|
return -1;
|
|
|
|
/* Get the time zone from the end of the string */
|
|
if (DecodeTimezone(cp, tzp) != 0)
|
|
return -1;
|
|
*cp = '\0';
|
|
|
|
/*
|
|
* Then read the rest of the field as a concatenated
|
|
* time
|
|
*/
|
|
if ((ftype[i] = DecodeNumberField(strlen(field[i]), field[i], fmask,
|
|
&tmask, tm, fsec, &is2digits)) < 0)
|
|
return -1;
|
|
|
|
/*
|
|
* modify tmask after returning from
|
|
* DecodeNumberField()
|
|
*/
|
|
tmask |= DTK_M(TZ);
|
|
}
|
|
else
|
|
{
|
|
if (DecodePosixTimezone(field[i], tzp) != 0)
|
|
return -1;
|
|
|
|
ftype[i] = DTK_TZ;
|
|
tmask = DTK_M(TZ);
|
|
}
|
|
}
|
|
else if (DecodeDate(field[i], fmask, &tmask, tm, EuroDates) != 0)
|
|
return -1;
|
|
break;
|
|
|
|
case DTK_TIME:
|
|
if (DecodeTime(field[i], &tmask, tm, fsec) != 0)
|
|
return -1;
|
|
|
|
/*
|
|
* Check upper limit on hours; other limits checked in
|
|
* DecodeTime()
|
|
*/
|
|
/* test for > 24:00:00 */
|
|
if (tm->tm_hour > 24 ||
|
|
(tm->tm_hour == 24 && (tm->tm_min > 0 || tm->tm_sec > 0)))
|
|
return -1;
|
|
break;
|
|
|
|
case DTK_TZ:
|
|
{
|
|
int tz;
|
|
|
|
if (tzp == NULL)
|
|
return -1;
|
|
|
|
if (DecodeTimezone(field[i], &tz) != 0)
|
|
return -1;
|
|
|
|
/*
|
|
* Already have a time zone? Then maybe this is the second
|
|
* field of a POSIX time: EST+3 (equivalent to PST)
|
|
*/
|
|
if (i > 0 && (fmask & DTK_M(TZ)) != 0 &&
|
|
ftype[i - 1] == DTK_TZ &&
|
|
isalpha((unsigned char) *field[i - 1]))
|
|
{
|
|
*tzp -= tz;
|
|
tmask = 0;
|
|
}
|
|
else
|
|
{
|
|
*tzp = tz;
|
|
tmask = DTK_M(TZ);
|
|
}
|
|
}
|
|
break;
|
|
|
|
case DTK_NUMBER:
|
|
|
|
/*
|
|
* Was this an "ISO date" with embedded field labels? An
|
|
* example is "y2001m02d04" - thomas 2001-02-04
|
|
*/
|
|
if (ptype != 0)
|
|
{
|
|
char *cp;
|
|
int val;
|
|
|
|
val = strtoint(field[i], &cp, 10);
|
|
|
|
/*
|
|
* only a few kinds are allowed to have an embedded
|
|
* decimal
|
|
*/
|
|
if (*cp == '.')
|
|
switch (ptype)
|
|
{
|
|
case DTK_JULIAN:
|
|
case DTK_TIME:
|
|
case DTK_SECOND:
|
|
break;
|
|
default:
|
|
return 1;
|
|
break;
|
|
}
|
|
else if (*cp != '\0')
|
|
return -1;
|
|
|
|
switch (ptype)
|
|
{
|
|
case DTK_YEAR:
|
|
tm->tm_year = val;
|
|
tmask = DTK_M(YEAR);
|
|
break;
|
|
|
|
case DTK_MONTH:
|
|
|
|
/*
|
|
* already have a month and hour? then assume
|
|
* minutes
|
|
*/
|
|
if ((fmask & DTK_M(MONTH)) != 0 &&
|
|
(fmask & DTK_M(HOUR)) != 0)
|
|
{
|
|
tm->tm_min = val;
|
|
tmask = DTK_M(MINUTE);
|
|
}
|
|
else
|
|
{
|
|
tm->tm_mon = val;
|
|
tmask = DTK_M(MONTH);
|
|
}
|
|
break;
|
|
|
|
case DTK_DAY:
|
|
tm->tm_mday = val;
|
|
tmask = DTK_M(DAY);
|
|
break;
|
|
|
|
case DTK_HOUR:
|
|
tm->tm_hour = val;
|
|
tmask = DTK_M(HOUR);
|
|
break;
|
|
|
|
case DTK_MINUTE:
|
|
tm->tm_min = val;
|
|
tmask = DTK_M(MINUTE);
|
|
break;
|
|
|
|
case DTK_SECOND:
|
|
tm->tm_sec = val;
|
|
tmask = DTK_M(SECOND);
|
|
if (*cp == '.')
|
|
{
|
|
double frac;
|
|
|
|
frac = strtod(cp, &cp);
|
|
if (*cp != '\0')
|
|
return -1;
|
|
*fsec = frac * 1000000;
|
|
}
|
|
break;
|
|
|
|
case DTK_TZ:
|
|
tmask = DTK_M(TZ);
|
|
if (DecodeTimezone(field[i], tzp) != 0)
|
|
return -1;
|
|
break;
|
|
|
|
case DTK_JULIAN:
|
|
/***
|
|
* previous field was a label for "julian date"?
|
|
***/
|
|
tmask = DTK_DATE_M;
|
|
j2date(val, &tm->tm_year, &tm->tm_mon, &tm->tm_mday);
|
|
/* fractional Julian Day? */
|
|
if (*cp == '.')
|
|
{
|
|
double time;
|
|
|
|
time = strtod(cp, &cp);
|
|
if (*cp != '\0')
|
|
return -1;
|
|
|
|
tmask |= DTK_TIME_M;
|
|
dt2time((time * USECS_PER_DAY), &tm->tm_hour, &tm->tm_min, &tm->tm_sec, fsec);
|
|
}
|
|
break;
|
|
|
|
case DTK_TIME:
|
|
/* previous field was "t" for ISO time */
|
|
if ((ftype[i] = DecodeNumberField(strlen(field[i]), field[i], (fmask | DTK_DATE_M),
|
|
&tmask, tm, fsec, &is2digits)) < 0)
|
|
return -1;
|
|
|
|
if (tmask != DTK_TIME_M)
|
|
return -1;
|
|
break;
|
|
|
|
default:
|
|
return -1;
|
|
break;
|
|
}
|
|
|
|
ptype = 0;
|
|
*dtype = DTK_DATE;
|
|
}
|
|
else
|
|
{
|
|
char *cp;
|
|
int flen;
|
|
|
|
flen = strlen(field[i]);
|
|
cp = strchr(field[i], '.');
|
|
|
|
/* Embedded decimal and no date yet? */
|
|
if (cp != NULL && !(fmask & DTK_DATE_M))
|
|
{
|
|
if (DecodeDate(field[i], fmask, &tmask, tm, EuroDates) != 0)
|
|
return -1;
|
|
}
|
|
/* embedded decimal and several digits before? */
|
|
else if (cp != NULL && flen - strlen(cp) > 2)
|
|
{
|
|
/*
|
|
* Interpret as a concatenated date or time Set the
|
|
* type field to allow decoding other fields later.
|
|
* Example: 20011223 or 040506
|
|
*/
|
|
if ((ftype[i] = DecodeNumberField(flen, field[i], fmask,
|
|
&tmask, tm, fsec, &is2digits)) < 0)
|
|
return -1;
|
|
}
|
|
else if (flen > 4)
|
|
{
|
|
if ((ftype[i] = DecodeNumberField(flen, field[i], fmask,
|
|
&tmask, tm, fsec, &is2digits)) < 0)
|
|
return -1;
|
|
}
|
|
/* otherwise it is a single date/time field... */
|
|
else if (DecodeNumber(flen, field[i], fmask,
|
|
&tmask, tm, fsec, &is2digits, EuroDates) != 0)
|
|
return -1;
|
|
}
|
|
break;
|
|
|
|
case DTK_STRING:
|
|
case DTK_SPECIAL:
|
|
type = DecodeSpecial(i, field[i], &val);
|
|
if (type == IGNORE_DTF)
|
|
continue;
|
|
|
|
tmask = DTK_M(type);
|
|
switch (type)
|
|
{
|
|
case RESERV:
|
|
switch (val)
|
|
{
|
|
case DTK_NOW:
|
|
tmask = (DTK_DATE_M | DTK_TIME_M | DTK_M(TZ));
|
|
*dtype = DTK_DATE;
|
|
GetCurrentDateTime(tm);
|
|
break;
|
|
|
|
case DTK_YESTERDAY:
|
|
tmask = DTK_DATE_M;
|
|
*dtype = DTK_DATE;
|
|
GetCurrentDateTime(tm);
|
|
j2date(date2j(tm->tm_year, tm->tm_mon, tm->tm_mday) - 1,
|
|
&tm->tm_year, &tm->tm_mon, &tm->tm_mday);
|
|
tm->tm_hour = 0;
|
|
tm->tm_min = 0;
|
|
tm->tm_sec = 0;
|
|
break;
|
|
|
|
case DTK_TODAY:
|
|
tmask = DTK_DATE_M;
|
|
*dtype = DTK_DATE;
|
|
GetCurrentDateTime(tm);
|
|
tm->tm_hour = 0;
|
|
tm->tm_min = 0;
|
|
tm->tm_sec = 0;
|
|
break;
|
|
|
|
case DTK_TOMORROW:
|
|
tmask = DTK_DATE_M;
|
|
*dtype = DTK_DATE;
|
|
GetCurrentDateTime(tm);
|
|
j2date(date2j(tm->tm_year, tm->tm_mon, tm->tm_mday) + 1,
|
|
&tm->tm_year, &tm->tm_mon, &tm->tm_mday);
|
|
tm->tm_hour = 0;
|
|
tm->tm_min = 0;
|
|
tm->tm_sec = 0;
|
|
break;
|
|
|
|
case DTK_ZULU:
|
|
tmask = (DTK_TIME_M | DTK_M(TZ));
|
|
*dtype = DTK_DATE;
|
|
tm->tm_hour = 0;
|
|
tm->tm_min = 0;
|
|
tm->tm_sec = 0;
|
|
if (tzp != NULL)
|
|
*tzp = 0;
|
|
break;
|
|
|
|
default:
|
|
*dtype = val;
|
|
}
|
|
|
|
break;
|
|
|
|
case MONTH:
|
|
|
|
/*
|
|
* already have a (numeric) month? then see if we can
|
|
* substitute...
|
|
*/
|
|
if ((fmask & DTK_M(MONTH)) && !haveTextMonth &&
|
|
!(fmask & DTK_M(DAY)) && tm->tm_mon >= 1 && tm->tm_mon <= 31)
|
|
{
|
|
tm->tm_mday = tm->tm_mon;
|
|
tmask = DTK_M(DAY);
|
|
}
|
|
haveTextMonth = true;
|
|
tm->tm_mon = val;
|
|
break;
|
|
|
|
case DTZMOD:
|
|
|
|
/*
|
|
* daylight savings time modifier (solves "MET DST"
|
|
* syntax)
|
|
*/
|
|
tmask |= DTK_M(DTZ);
|
|
tm->tm_isdst = 1;
|
|
if (tzp == NULL)
|
|
return -1;
|
|
*tzp -= val;
|
|
break;
|
|
|
|
case DTZ:
|
|
|
|
/*
|
|
* set mask for TZ here _or_ check for DTZ later when
|
|
* getting default timezone
|
|
*/
|
|
tmask |= DTK_M(TZ);
|
|
tm->tm_isdst = 1;
|
|
if (tzp == NULL)
|
|
return -1;
|
|
*tzp = -val;
|
|
ftype[i] = DTK_TZ;
|
|
break;
|
|
|
|
case TZ:
|
|
tm->tm_isdst = 0;
|
|
if (tzp == NULL)
|
|
return -1;
|
|
*tzp = -val;
|
|
ftype[i] = DTK_TZ;
|
|
break;
|
|
|
|
case IGNORE_DTF:
|
|
break;
|
|
|
|
case AMPM:
|
|
mer = val;
|
|
break;
|
|
|
|
case ADBC:
|
|
bc = (val == BC);
|
|
break;
|
|
|
|
case DOW:
|
|
tm->tm_wday = val;
|
|
break;
|
|
|
|
case UNITS:
|
|
tmask = 0;
|
|
ptype = val;
|
|
break;
|
|
|
|
case ISOTIME:
|
|
|
|
/*
|
|
* This is a filler field "t" indicating that the next
|
|
* field is time. Try to verify that this is sensible.
|
|
*/
|
|
tmask = 0;
|
|
|
|
/* No preceding date? Then quit... */
|
|
if ((fmask & DTK_DATE_M) != DTK_DATE_M)
|
|
return -1;
|
|
|
|
/***
|
|
* We will need one of the following fields:
|
|
* DTK_NUMBER should be hhmmss.fff
|
|
* DTK_TIME should be hh:mm:ss.fff
|
|
* DTK_DATE should be hhmmss-zz
|
|
***/
|
|
if (i >= nf - 1 ||
|
|
(ftype[i + 1] != DTK_NUMBER &&
|
|
ftype[i + 1] != DTK_TIME &&
|
|
ftype[i + 1] != DTK_DATE))
|
|
return -1;
|
|
|
|
ptype = val;
|
|
break;
|
|
|
|
default:
|
|
return -1;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
return -1;
|
|
}
|
|
|
|
if (tmask & fmask)
|
|
return -1;
|
|
fmask |= tmask;
|
|
}
|
|
|
|
/* there is no year zero in AD/BC notation; i.e. "1 BC" == year 0 */
|
|
if (bc)
|
|
{
|
|
if (tm->tm_year > 0)
|
|
tm->tm_year = -(tm->tm_year - 1);
|
|
else
|
|
return -1;
|
|
}
|
|
else if (is2digits)
|
|
{
|
|
if (tm->tm_year < 70)
|
|
tm->tm_year += 2000;
|
|
else if (tm->tm_year < 100)
|
|
tm->tm_year += 1900;
|
|
}
|
|
|
|
if (mer != HR24 && tm->tm_hour > 12)
|
|
return -1;
|
|
if (mer == AM && tm->tm_hour == 12)
|
|
tm->tm_hour = 0;
|
|
else if (mer == PM && tm->tm_hour != 12)
|
|
tm->tm_hour += 12;
|
|
|
|
/* do additional checking for full date specs... */
|
|
if (*dtype == DTK_DATE)
|
|
{
|
|
if ((fmask & DTK_DATE_M) != DTK_DATE_M)
|
|
return ((fmask & DTK_TIME_M) == DTK_TIME_M) ? 1 : -1;
|
|
|
|
/*
|
|
* check for valid day of month, now that we know for sure the month
|
|
* and year...
|
|
*/
|
|
if (tm->tm_mday < 1 || tm->tm_mday > day_tab[isleap(tm->tm_year)][tm->tm_mon - 1])
|
|
return -1;
|
|
|
|
/*
|
|
* backend tried to find local timezone here but we don't use the
|
|
* result afterwards anyway so we only check for this error: daylight
|
|
* savings time modifier but no standard timezone?
|
|
*/
|
|
if ((fmask & DTK_DATE_M) == DTK_DATE_M && tzp != NULL && !(fmask & DTK_M(TZ)) && (fmask & DTK_M(DTZMOD)))
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
} /* DecodeDateTime() */
|
|
|
|
/* Function works as follows:
|
|
*
|
|
*
|
|
* */
|
|
|
|
static char *
|
|
find_end_token(char *str, char *fmt)
|
|
{
|
|
/*
|
|
* str: here is28the day12the hour fmt: here is%dthe day%hthe hour
|
|
*
|
|
* we extract the 28, we read the percent sign and the type "d" then this
|
|
* functions gets called as find_end_token("28the day12the hour", "the
|
|
* day%hthehour")
|
|
*
|
|
* fmt points to "the day%hthehour", next_percent points to %hthehour and
|
|
* we have to find a match for everything between these positions ("the
|
|
* day"). We look for "the day" in str and know that the pattern we are
|
|
* about to scan ends where this string starts (right after the "28")
|
|
*
|
|
* At the end, *fmt is '\0' and *str isn't. end_position then is
|
|
* unchanged.
|
|
*/
|
|
char *end_position = NULL;
|
|
char *next_percent,
|
|
*subst_location = NULL;
|
|
int scan_offset = 0;
|
|
char last_char;
|
|
|
|
/* are we at the end? */
|
|
if (!*fmt)
|
|
{
|
|
end_position = fmt;
|
|
return end_position;
|
|
}
|
|
|
|
/* not at the end */
|
|
while (fmt[scan_offset] == '%' && fmt[scan_offset + 1])
|
|
{
|
|
/*
|
|
* there is no delimiter, skip to the next delimiter if we're reading
|
|
* a number and then something that is not a number "9:15pm", we might
|
|
* be able to recover with the strtol end pointer. Go for the next
|
|
* percent sign
|
|
*/
|
|
scan_offset += 2;
|
|
}
|
|
next_percent = strchr(fmt + scan_offset, '%');
|
|
if (next_percent)
|
|
{
|
|
/*
|
|
* we don't want to allocate extra memory, so we temporarily set the
|
|
* '%' sign to '\0' and call strstr However since we allow whitespace
|
|
* to float around everything, we have to shorten the pattern until we
|
|
* reach a non-whitespace character
|
|
*/
|
|
|
|
subst_location = next_percent;
|
|
while (*(subst_location - 1) == ' ' && subst_location - 1 > fmt + scan_offset)
|
|
subst_location--;
|
|
last_char = *subst_location;
|
|
*subst_location = '\0';
|
|
|
|
/*
|
|
* the haystack is the str and the needle is the original fmt but it
|
|
* ends at the position where the next percent sign would be
|
|
*/
|
|
|
|
/*
|
|
* There is one special case. Imagine: str = " 2", fmt = "%d %...",
|
|
* since we want to allow blanks as "dynamic" padding we have to
|
|
* accept this. Now, we are called with a fmt of " %..." and look for
|
|
* " " in str. We find it at the first position and never read the
|
|
* 2...
|
|
*/
|
|
while (*str == ' ')
|
|
str++;
|
|
end_position = strstr(str, fmt + scan_offset);
|
|
*subst_location = last_char;
|
|
}
|
|
else
|
|
{
|
|
/*
|
|
* there is no other percent sign. So everything up to the end has to
|
|
* match.
|
|
*/
|
|
end_position = str + strlen(str);
|
|
}
|
|
if (!end_position)
|
|
{
|
|
/*
|
|
* maybe we have the following case:
|
|
*
|
|
* str = "4:15am" fmt = "%M:%S %p"
|
|
*
|
|
* at this place we could have
|
|
*
|
|
* str = "15am" fmt = " %p"
|
|
*
|
|
* and have set fmt to " " because overwrote the % sign with a NULL
|
|
*
|
|
* In this case where we would have to match a space but can't find
|
|
* it, set end_position to the end of the string
|
|
*/
|
|
if ((fmt + scan_offset)[0] == ' ' && fmt + scan_offset + 1 == subst_location)
|
|
end_position = str + strlen(str);
|
|
}
|
|
return end_position;
|
|
}
|
|
|
|
static int
|
|
pgtypes_defmt_scan(union un_fmt_comb *scan_val, int scan_type, char **pstr, char *pfmt)
|
|
{
|
|
/*
|
|
* scan everything between pstr and pstr_end. This is not including the
|
|
* last character so we might set it to '\0' for the parsing
|
|
*/
|
|
|
|
char last_char;
|
|
int err = 0;
|
|
char *pstr_end;
|
|
char *strtol_end = NULL;
|
|
|
|
while (**pstr == ' ')
|
|
pstr++;
|
|
pstr_end = find_end_token(*pstr, pfmt);
|
|
if (!pstr_end)
|
|
{
|
|
/* there was an error, no match */
|
|
return 1;
|
|
}
|
|
last_char = *pstr_end;
|
|
*pstr_end = '\0';
|
|
|
|
switch (scan_type)
|
|
{
|
|
case PGTYPES_TYPE_UINT:
|
|
|
|
/*
|
|
* numbers may be blank-padded, this is the only deviation from
|
|
* the fmt-string we accept
|
|
*/
|
|
while (**pstr == ' ')
|
|
(*pstr)++;
|
|
errno = 0;
|
|
scan_val->uint_val = (unsigned int) strtol(*pstr, &strtol_end, 10);
|
|
if (errno)
|
|
err = 1;
|
|
break;
|
|
case PGTYPES_TYPE_UINT_LONG:
|
|
while (**pstr == ' ')
|
|
(*pstr)++;
|
|
errno = 0;
|
|
scan_val->luint_val = (unsigned long int) strtol(*pstr, &strtol_end, 10);
|
|
if (errno)
|
|
err = 1;
|
|
break;
|
|
case PGTYPES_TYPE_STRING_MALLOCED:
|
|
scan_val->str_val = pgtypes_strdup(*pstr);
|
|
if (scan_val->str_val == NULL)
|
|
err = 1;
|
|
break;
|
|
}
|
|
if (strtol_end && *strtol_end)
|
|
*pstr = strtol_end;
|
|
else
|
|
*pstr = pstr_end;
|
|
*pstr_end = last_char;
|
|
return err;
|
|
}
|
|
|
|
/* XXX range checking */
|
|
int
|
|
PGTYPEStimestamp_defmt_scan(char **str, char *fmt, timestamp * d,
|
|
int *year, int *month, int *day,
|
|
int *hour, int *minute, int *second,
|
|
int *tz)
|
|
{
|
|
union un_fmt_comb scan_val;
|
|
int scan_type;
|
|
|
|
char *pstr,
|
|
*pfmt,
|
|
*tmp;
|
|
int err = 1;
|
|
unsigned int j;
|
|
struct tm tm;
|
|
|
|
pfmt = fmt;
|
|
pstr = *str;
|
|
|
|
while (*pfmt)
|
|
{
|
|
err = 0;
|
|
while (*pfmt == ' ')
|
|
pfmt++;
|
|
while (*pstr == ' ')
|
|
pstr++;
|
|
if (*pfmt != '%')
|
|
{
|
|
if (*pfmt == *pstr)
|
|
{
|
|
pfmt++;
|
|
pstr++;
|
|
}
|
|
else
|
|
{
|
|
/* Error: no match */
|
|
err = 1;
|
|
return err;
|
|
}
|
|
continue;
|
|
}
|
|
/* here *pfmt equals '%' */
|
|
pfmt++;
|
|
switch (*pfmt)
|
|
{
|
|
case 'a':
|
|
pfmt++;
|
|
|
|
/*
|
|
* we parse the day and see if it is a week day but we do not
|
|
* check if the week day really matches the date
|
|
*/
|
|
err = 1;
|
|
j = 0;
|
|
while (pgtypes_date_weekdays_short[j])
|
|
{
|
|
if (strncmp(pgtypes_date_weekdays_short[j], pstr,
|
|
strlen(pgtypes_date_weekdays_short[j])) == 0)
|
|
{
|
|
/* found it */
|
|
err = 0;
|
|
pstr += strlen(pgtypes_date_weekdays_short[j]);
|
|
break;
|
|
}
|
|
j++;
|
|
}
|
|
break;
|
|
case 'A':
|
|
/* see note above */
|
|
pfmt++;
|
|
err = 1;
|
|
j = 0;
|
|
while (days[j])
|
|
{
|
|
if (strncmp(days[j], pstr, strlen(days[j])) == 0)
|
|
{
|
|
/* found it */
|
|
err = 0;
|
|
pstr += strlen(days[j]);
|
|
break;
|
|
}
|
|
j++;
|
|
}
|
|
break;
|
|
case 'b':
|
|
case 'h':
|
|
pfmt++;
|
|
err = 1;
|
|
j = 0;
|
|
while (months[j])
|
|
{
|
|
if (strncmp(months[j], pstr, strlen(months[j])) == 0)
|
|
{
|
|
/* found it */
|
|
err = 0;
|
|
pstr += strlen(months[j]);
|
|
*month = j + 1;
|
|
break;
|
|
}
|
|
j++;
|
|
}
|
|
break;
|
|
case 'B':
|
|
/* see note above */
|
|
pfmt++;
|
|
err = 1;
|
|
j = 0;
|
|
while (pgtypes_date_months[j])
|
|
{
|
|
if (strncmp(pgtypes_date_months[j], pstr, strlen(pgtypes_date_months[j])) == 0)
|
|
{
|
|
/* found it */
|
|
err = 0;
|
|
pstr += strlen(pgtypes_date_months[j]);
|
|
*month = j + 1;
|
|
break;
|
|
}
|
|
j++;
|
|
}
|
|
break;
|
|
case 'c':
|
|
/* XXX */
|
|
break;
|
|
case 'C':
|
|
pfmt++;
|
|
scan_type = PGTYPES_TYPE_UINT;
|
|
err = pgtypes_defmt_scan(&scan_val, scan_type, &pstr, pfmt);
|
|
*year = scan_val.uint_val * 100;
|
|
break;
|
|
case 'd':
|
|
case 'e':
|
|
pfmt++;
|
|
scan_type = PGTYPES_TYPE_UINT;
|
|
err = pgtypes_defmt_scan(&scan_val, scan_type, &pstr, pfmt);
|
|
*day = scan_val.uint_val;
|
|
break;
|
|
case 'D':
|
|
|
|
/*
|
|
* we have to concatenate the strings in order to be able to
|
|
* find the end of the substitution
|
|
*/
|
|
pfmt++;
|
|
tmp = pgtypes_alloc(strlen("%m/%d/%y") + strlen(pstr) + 1);
|
|
strcpy(tmp, "%m/%d/%y");
|
|
strcat(tmp, pfmt);
|
|
err = PGTYPEStimestamp_defmt_scan(&pstr, tmp, d, year, month, day, hour, minute, second, tz);
|
|
free(tmp);
|
|
return err;
|
|
case 'm':
|
|
pfmt++;
|
|
scan_type = PGTYPES_TYPE_UINT;
|
|
err = pgtypes_defmt_scan(&scan_val, scan_type, &pstr, pfmt);
|
|
*month = scan_val.uint_val;
|
|
break;
|
|
case 'y':
|
|
case 'g': /* XXX difference to y (ISO) */
|
|
pfmt++;
|
|
scan_type = PGTYPES_TYPE_UINT;
|
|
err = pgtypes_defmt_scan(&scan_val, scan_type, &pstr, pfmt);
|
|
if (*year < 0)
|
|
{
|
|
/* not yet set */
|
|
*year = scan_val.uint_val;
|
|
}
|
|
else
|
|
*year += scan_val.uint_val;
|
|
if (*year < 100)
|
|
*year += 1900;
|
|
break;
|
|
case 'G':
|
|
/* XXX difference to %V (ISO) */
|
|
pfmt++;
|
|
scan_type = PGTYPES_TYPE_UINT;
|
|
err = pgtypes_defmt_scan(&scan_val, scan_type, &pstr, pfmt);
|
|
*year = scan_val.uint_val;
|
|
break;
|
|
case 'H':
|
|
case 'I':
|
|
case 'k':
|
|
case 'l':
|
|
pfmt++;
|
|
scan_type = PGTYPES_TYPE_UINT;
|
|
err = pgtypes_defmt_scan(&scan_val, scan_type, &pstr, pfmt);
|
|
*hour += scan_val.uint_val;
|
|
break;
|
|
case 'j':
|
|
pfmt++;
|
|
scan_type = PGTYPES_TYPE_UINT;
|
|
err = pgtypes_defmt_scan(&scan_val, scan_type, &pstr, pfmt);
|
|
|
|
/*
|
|
* XXX what should we do with that? We could say that it's
|
|
* sufficient if we have the year and the day within the year
|
|
* to get at least a specific day.
|
|
*/
|
|
break;
|
|
case 'M':
|
|
pfmt++;
|
|
scan_type = PGTYPES_TYPE_UINT;
|
|
err = pgtypes_defmt_scan(&scan_val, scan_type, &pstr, pfmt);
|
|
*minute = scan_val.uint_val;
|
|
break;
|
|
case 'n':
|
|
pfmt++;
|
|
if (*pstr == '\n')
|
|
pstr++;
|
|
else
|
|
err = 1;
|
|
break;
|
|
case 'p':
|
|
err = 1;
|
|
pfmt++;
|
|
if (strncmp(pstr, "am", 2) == 0)
|
|
{
|
|
*hour += 0;
|
|
err = 0;
|
|
pstr += 2;
|
|
}
|
|
if (strncmp(pstr, "a.m.", 4) == 0)
|
|
{
|
|
*hour += 0;
|
|
err = 0;
|
|
pstr += 4;
|
|
}
|
|
if (strncmp(pstr, "pm", 2) == 0)
|
|
{
|
|
*hour += 12;
|
|
err = 0;
|
|
pstr += 2;
|
|
}
|
|
if (strncmp(pstr, "p.m.", 4) == 0)
|
|
{
|
|
*hour += 12;
|
|
err = 0;
|
|
pstr += 4;
|
|
}
|
|
break;
|
|
case 'P':
|
|
err = 1;
|
|
pfmt++;
|
|
if (strncmp(pstr, "AM", 2) == 0)
|
|
{
|
|
*hour += 0;
|
|
err = 0;
|
|
pstr += 2;
|
|
}
|
|
if (strncmp(pstr, "A.M.", 4) == 0)
|
|
{
|
|
*hour += 0;
|
|
err = 0;
|
|
pstr += 4;
|
|
}
|
|
if (strncmp(pstr, "PM", 2) == 0)
|
|
{
|
|
*hour += 12;
|
|
err = 0;
|
|
pstr += 2;
|
|
}
|
|
if (strncmp(pstr, "P.M.", 4) == 0)
|
|
{
|
|
*hour += 12;
|
|
err = 0;
|
|
pstr += 4;
|
|
}
|
|
break;
|
|
case 'r':
|
|
pfmt++;
|
|
tmp = pgtypes_alloc(strlen("%I:%M:%S %p") + strlen(pstr) + 1);
|
|
strcpy(tmp, "%I:%M:%S %p");
|
|
strcat(tmp, pfmt);
|
|
err = PGTYPEStimestamp_defmt_scan(&pstr, tmp, d, year, month, day, hour, minute, second, tz);
|
|
free(tmp);
|
|
return err;
|
|
case 'R':
|
|
pfmt++;
|
|
tmp = pgtypes_alloc(strlen("%H:%M") + strlen(pstr) + 1);
|
|
strcpy(tmp, "%H:%M");
|
|
strcat(tmp, pfmt);
|
|
err = PGTYPEStimestamp_defmt_scan(&pstr, tmp, d, year, month, day, hour, minute, second, tz);
|
|
free(tmp);
|
|
return err;
|
|
case 's':
|
|
pfmt++;
|
|
scan_type = PGTYPES_TYPE_UINT_LONG;
|
|
err = pgtypes_defmt_scan(&scan_val, scan_type, &pstr, pfmt);
|
|
/* number of seconds in scan_val.luint_val */
|
|
{
|
|
struct tm *tms;
|
|
time_t et = (time_t) scan_val.luint_val;
|
|
|
|
tms = gmtime(&et);
|
|
|
|
if (tms)
|
|
{
|
|
*year = tms->tm_year + 1900;
|
|
*month = tms->tm_mon + 1;
|
|
*day = tms->tm_mday;
|
|
*hour = tms->tm_hour;
|
|
*minute = tms->tm_min;
|
|
*second = tms->tm_sec;
|
|
}
|
|
else
|
|
err = 1;
|
|
}
|
|
break;
|
|
case 'S':
|
|
pfmt++;
|
|
scan_type = PGTYPES_TYPE_UINT;
|
|
err = pgtypes_defmt_scan(&scan_val, scan_type, &pstr, pfmt);
|
|
*second = scan_val.uint_val;
|
|
break;
|
|
case 't':
|
|
pfmt++;
|
|
if (*pstr == '\t')
|
|
pstr++;
|
|
else
|
|
err = 1;
|
|
break;
|
|
case 'T':
|
|
pfmt++;
|
|
tmp = pgtypes_alloc(strlen("%H:%M:%S") + strlen(pstr) + 1);
|
|
strcpy(tmp, "%H:%M:%S");
|
|
strcat(tmp, pfmt);
|
|
err = PGTYPEStimestamp_defmt_scan(&pstr, tmp, d, year, month, day, hour, minute, second, tz);
|
|
free(tmp);
|
|
return err;
|
|
case 'u':
|
|
pfmt++;
|
|
scan_type = PGTYPES_TYPE_UINT;
|
|
err = pgtypes_defmt_scan(&scan_val, scan_type, &pstr, pfmt);
|
|
if (scan_val.uint_val < 1 || scan_val.uint_val > 7)
|
|
err = 1;
|
|
break;
|
|
case 'U':
|
|
pfmt++;
|
|
scan_type = PGTYPES_TYPE_UINT;
|
|
err = pgtypes_defmt_scan(&scan_val, scan_type, &pstr, pfmt);
|
|
if (scan_val.uint_val > 53)
|
|
err = 1;
|
|
break;
|
|
case 'V':
|
|
pfmt++;
|
|
scan_type = PGTYPES_TYPE_UINT;
|
|
err = pgtypes_defmt_scan(&scan_val, scan_type, &pstr, pfmt);
|
|
if (scan_val.uint_val < 1 || scan_val.uint_val > 53)
|
|
err = 1;
|
|
break;
|
|
case 'w':
|
|
pfmt++;
|
|
scan_type = PGTYPES_TYPE_UINT;
|
|
err = pgtypes_defmt_scan(&scan_val, scan_type, &pstr, pfmt);
|
|
if (scan_val.uint_val > 6)
|
|
err = 1;
|
|
break;
|
|
case 'W':
|
|
pfmt++;
|
|
scan_type = PGTYPES_TYPE_UINT;
|
|
err = pgtypes_defmt_scan(&scan_val, scan_type, &pstr, pfmt);
|
|
if (scan_val.uint_val > 53)
|
|
err = 1;
|
|
break;
|
|
case 'x':
|
|
case 'X':
|
|
/* XXX */
|
|
break;
|
|
case 'Y':
|
|
pfmt++;
|
|
scan_type = PGTYPES_TYPE_UINT;
|
|
err = pgtypes_defmt_scan(&scan_val, scan_type, &pstr, pfmt);
|
|
*year = scan_val.uint_val;
|
|
break;
|
|
case 'z':
|
|
pfmt++;
|
|
scan_type = PGTYPES_TYPE_STRING_MALLOCED;
|
|
err = pgtypes_defmt_scan(&scan_val, scan_type, &pstr, pfmt);
|
|
if (!err)
|
|
{
|
|
err = DecodeTimezone(scan_val.str_val, tz);
|
|
free(scan_val.str_val);
|
|
}
|
|
break;
|
|
case 'Z':
|
|
pfmt++;
|
|
scan_type = PGTYPES_TYPE_STRING_MALLOCED;
|
|
err = pgtypes_defmt_scan(&scan_val, scan_type, &pstr, pfmt);
|
|
if (!err)
|
|
{
|
|
/*
|
|
* XXX use DecodeSpecial instead? Do we need strcasecmp
|
|
* here?
|
|
*/
|
|
err = 1;
|
|
for (j = 0; j < szdatetktbl; j++)
|
|
{
|
|
if ((datetktbl[j].type == TZ || datetktbl[j].type == DTZ) &&
|
|
pg_strcasecmp(datetktbl[j].token,
|
|
scan_val.str_val) == 0)
|
|
{
|
|
*tz = -datetktbl[j].value;
|
|
err = 0;
|
|
break;
|
|
}
|
|
}
|
|
free(scan_val.str_val);
|
|
}
|
|
break;
|
|
case '+':
|
|
/* XXX */
|
|
break;
|
|
case '%':
|
|
pfmt++;
|
|
if (*pstr == '%')
|
|
pstr++;
|
|
else
|
|
err = 1;
|
|
break;
|
|
default:
|
|
err = 1;
|
|
}
|
|
}
|
|
if (!err)
|
|
{
|
|
if (*second < 0)
|
|
*second = 0;
|
|
if (*minute < 0)
|
|
*minute = 0;
|
|
if (*hour < 0)
|
|
*hour = 0;
|
|
if (*day < 0)
|
|
{
|
|
err = 1;
|
|
*day = 1;
|
|
}
|
|
if (*month < 0)
|
|
{
|
|
err = 1;
|
|
*month = 1;
|
|
}
|
|
if (*year < 0)
|
|
{
|
|
err = 1;
|
|
*year = 1970;
|
|
}
|
|
|
|
if (*second > 59)
|
|
{
|
|
err = 1;
|
|
*second = 0;
|
|
}
|
|
if (*minute > 59)
|
|
{
|
|
err = 1;
|
|
*minute = 0;
|
|
}
|
|
if (*hour > 24 || /* test for > 24:00:00 */
|
|
(*hour == 24 && (*minute > 0 || *second > 0)))
|
|
{
|
|
err = 1;
|
|
*hour = 0;
|
|
}
|
|
if (*month > MONTHS_PER_YEAR)
|
|
{
|
|
err = 1;
|
|
*month = 1;
|
|
}
|
|
if (*day > day_tab[isleap(*year)][*month - 1])
|
|
{
|
|
*day = day_tab[isleap(*year)][*month - 1];
|
|
err = 1;
|
|
}
|
|
|
|
tm.tm_sec = *second;
|
|
tm.tm_min = *minute;
|
|
tm.tm_hour = *hour;
|
|
tm.tm_mday = *day;
|
|
tm.tm_mon = *month;
|
|
tm.tm_year = *year;
|
|
|
|
tm2timestamp(&tm, 0, tz, d);
|
|
}
|
|
return err;
|
|
}
|
|
|
|
/* XXX: 1900 is compiled in as the base for years */
|