sl@0: /* sl@0: * tclGetDate.y -- sl@0: * sl@0: * Contains yacc grammar for parsing date and time strings. sl@0: * The output of this file should be the file tclDate.c which sl@0: * is used directly in the Tcl sources. sl@0: * sl@0: * Copyright (c) 1992-1995 Karl Lehenbauer and Mark Diekhans. sl@0: * Copyright (c) 1995-1997 Sun Microsystems, Inc. sl@0: * sl@0: * See the file "license.terms" for information on usage and redistribution sl@0: * of this file, and for a DISCLAIMER OF ALL WARRANTIES. sl@0: * sl@0: * RCS: @(#) $Id: tclGetDate.y,v 1.18.4.2 2005/11/04 20:15:09 kennykb Exp $ sl@0: */ sl@0: sl@0: %{ sl@0: /* sl@0: * tclDate.c -- sl@0: * sl@0: * This file is generated from a yacc grammar defined in sl@0: * the file tclGetDate.y. It should not be edited directly. sl@0: * sl@0: * Copyright (c) 1992-1995 Karl Lehenbauer and Mark Diekhans. sl@0: * Copyright (c) 1995-1997 Sun Microsystems, Inc. sl@0: * sl@0: * See the file "license.terms" for information on usage and redistribution sl@0: * of this file, and for a DISCLAIMER OF ALL WARRANTIES. sl@0: * sl@0: * SCCSID sl@0: */ sl@0: sl@0: #include "tclInt.h" sl@0: #include "tclPort.h" sl@0: sl@0: #if defined(MAC_TCL) && !defined(TCL_MAC_USE_MSL_EPOCH) sl@0: # define EPOCH 1904 sl@0: # define START_OF_TIME 1904 sl@0: # define END_OF_TIME 2039 sl@0: #else sl@0: # define EPOCH 1970 sl@0: # define START_OF_TIME 1902 sl@0: # define END_OF_TIME 2037 sl@0: #endif sl@0: sl@0: /* sl@0: * The offset of tm_year of struct tm returned by localtime, gmtime, etc. sl@0: * I don't know how universal this is; K&R II, the NetBSD manpages, and sl@0: * ../compat/strftime.c all agree that tm_year is the year-1900. However, sl@0: * some systems may have a different value. This #define should be the sl@0: * same as in ../compat/strftime.c. sl@0: */ sl@0: #define TM_YEAR_BASE 1900 sl@0: sl@0: #define HOUR(x) ((int) (60 * x)) sl@0: #define SECSPERDAY (24L * 60L * 60L) sl@0: #define IsLeapYear(x) ((x % 4 == 0) && (x % 100 != 0 || x % 400 == 0)) sl@0: sl@0: /* sl@0: * An entry in the lexical lookup table. sl@0: */ sl@0: typedef struct _TABLE { sl@0: char *name; sl@0: int type; sl@0: time_t value; sl@0: } TABLE; sl@0: sl@0: sl@0: /* sl@0: * Daylight-savings mode: on, off, or not yet known. sl@0: */ sl@0: typedef enum _DSTMODE { sl@0: DSTon, DSToff, DSTmaybe sl@0: } DSTMODE; sl@0: sl@0: /* sl@0: * Meridian: am, pm, or 24-hour style. sl@0: */ sl@0: typedef enum _MERIDIAN { sl@0: MERam, MERpm, MER24 sl@0: } MERIDIAN; sl@0: sl@0: sl@0: /* sl@0: * Global variables. We could get rid of most of these by using a good sl@0: * union as the yacc stack. (This routine was originally written before sl@0: * yacc had the %union construct.) Maybe someday; right now we only use sl@0: * the %union very rarely. sl@0: */ sl@0: static char *yyInput; sl@0: static DSTMODE yyDSTmode; sl@0: static time_t yyDayOrdinal; sl@0: static time_t yyDayNumber; sl@0: static time_t yyMonthOrdinal; sl@0: static int yyHaveDate; sl@0: static int yyHaveDay; sl@0: static int yyHaveOrdinalMonth; sl@0: static int yyHaveRel; sl@0: static int yyHaveTime; sl@0: static int yyHaveZone; sl@0: static time_t yyTimezone; sl@0: static time_t yyDay; sl@0: static time_t yyHour; sl@0: static time_t yyMinutes; sl@0: static time_t yyMonth; sl@0: static time_t yySeconds; sl@0: static time_t yyYear; sl@0: static MERIDIAN yyMeridian; sl@0: static time_t yyRelMonth; sl@0: static time_t yyRelDay; sl@0: static time_t yyRelSeconds; sl@0: static time_t *yyRelPointer; sl@0: sl@0: /* sl@0: * Prototypes of internal functions. sl@0: */ sl@0: static void yyerror _ANSI_ARGS_((char *s)); sl@0: static time_t ToSeconds _ANSI_ARGS_((time_t Hours, time_t Minutes, sl@0: time_t Seconds, MERIDIAN Meridian)); sl@0: static int Convert _ANSI_ARGS_((time_t Month, time_t Day, time_t Year, sl@0: time_t Hours, time_t Minutes, time_t Seconds, sl@0: MERIDIAN Meridia, DSTMODE DSTmode, time_t *TimePtr)); sl@0: static time_t DSTcorrect _ANSI_ARGS_((time_t Start, time_t Future)); sl@0: static time_t NamedDay _ANSI_ARGS_((time_t Start, time_t DayOrdinal, sl@0: time_t DayNumber)); sl@0: static time_t NamedMonth _ANSI_ARGS_((time_t Start, time_t MonthOrdinal, sl@0: time_t MonthNumber)); sl@0: static int RelativeMonth _ANSI_ARGS_((time_t Start, time_t RelMonth, sl@0: time_t *TimePtr)); sl@0: static int RelativeDay _ANSI_ARGS_((time_t Start, time_t RelDay, sl@0: time_t *TimePtr)); sl@0: static int LookupWord _ANSI_ARGS_((char *buff)); sl@0: static int yylex _ANSI_ARGS_((void)); sl@0: sl@0: int sl@0: yyparse _ANSI_ARGS_((void)); sl@0: %} sl@0: sl@0: %union { sl@0: time_t Number; sl@0: enum _MERIDIAN Meridian; sl@0: } sl@0: sl@0: %token tAGO tDAY tDAYZONE tID tMERIDIAN tMINUTE_UNIT tMONTH tMONTH_UNIT sl@0: %token tSTARDATE tSEC_UNIT tSNUMBER tUNUMBER tZONE tEPOCH tDST tISOBASE sl@0: %token tDAY_UNIT tNEXT sl@0: sl@0: %type tDAY tDAYZONE tMINUTE_UNIT tMONTH tMONTH_UNIT tDST sl@0: %type tSEC_UNIT tSNUMBER tUNUMBER tZONE tISOBASE tDAY_UNIT sl@0: %type unit sign tNEXT tSTARDATE sl@0: %type tMERIDIAN o_merid sl@0: sl@0: %% sl@0: sl@0: spec : /* NULL */ sl@0: | spec item sl@0: ; sl@0: sl@0: item : time { sl@0: yyHaveTime++; sl@0: } sl@0: | zone { sl@0: yyHaveZone++; sl@0: } sl@0: | date { sl@0: yyHaveDate++; sl@0: } sl@0: | ordMonth { sl@0: yyHaveOrdinalMonth++; sl@0: } sl@0: | day { sl@0: yyHaveDay++; sl@0: } sl@0: | relspec { sl@0: yyHaveRel++; sl@0: } sl@0: | iso { sl@0: yyHaveTime++; sl@0: yyHaveDate++; sl@0: } sl@0: | trek { sl@0: yyHaveTime++; sl@0: yyHaveDate++; sl@0: yyHaveRel++; sl@0: } sl@0: | number sl@0: ; sl@0: sl@0: time : tUNUMBER tMERIDIAN { sl@0: yyHour = $1; sl@0: yyMinutes = 0; sl@0: yySeconds = 0; sl@0: yyMeridian = $2; sl@0: } sl@0: | tUNUMBER ':' tUNUMBER o_merid { sl@0: yyHour = $1; sl@0: yyMinutes = $3; sl@0: yySeconds = 0; sl@0: yyMeridian = $4; sl@0: } sl@0: | tUNUMBER ':' tUNUMBER '-' tUNUMBER { sl@0: yyHour = $1; sl@0: yyMinutes = $3; sl@0: yyMeridian = MER24; sl@0: yyDSTmode = DSToff; sl@0: yyTimezone = ($5 % 100 + ($5 / 100) * 60); sl@0: } sl@0: | tUNUMBER ':' tUNUMBER ':' tUNUMBER o_merid { sl@0: yyHour = $1; sl@0: yyMinutes = $3; sl@0: yySeconds = $5; sl@0: yyMeridian = $6; sl@0: } sl@0: | tUNUMBER ':' tUNUMBER ':' tUNUMBER '-' tUNUMBER { sl@0: yyHour = $1; sl@0: yyMinutes = $3; sl@0: yySeconds = $5; sl@0: yyMeridian = MER24; sl@0: yyDSTmode = DSToff; sl@0: yyTimezone = ($7 % 100 + ($7 / 100) * 60); sl@0: } sl@0: ; sl@0: sl@0: zone : tZONE tDST { sl@0: yyTimezone = $1; sl@0: yyDSTmode = DSTon; sl@0: } sl@0: | tZONE { sl@0: yyTimezone = $1; sl@0: yyDSTmode = DSToff; sl@0: } sl@0: | tDAYZONE { sl@0: yyTimezone = $1; sl@0: yyDSTmode = DSTon; sl@0: } sl@0: ; sl@0: sl@0: day : tDAY { sl@0: yyDayOrdinal = 1; sl@0: yyDayNumber = $1; sl@0: } sl@0: | tDAY ',' { sl@0: yyDayOrdinal = 1; sl@0: yyDayNumber = $1; sl@0: } sl@0: | tUNUMBER tDAY { sl@0: yyDayOrdinal = $1; sl@0: yyDayNumber = $2; sl@0: } sl@0: | sign tUNUMBER tDAY { sl@0: yyDayOrdinal = $1 * $2; sl@0: yyDayNumber = $3; sl@0: } sl@0: | tNEXT tDAY { sl@0: yyDayOrdinal = 2; sl@0: yyDayNumber = $2; sl@0: } sl@0: ; sl@0: sl@0: date : tUNUMBER '/' tUNUMBER { sl@0: yyMonth = $1; sl@0: yyDay = $3; sl@0: } sl@0: | tUNUMBER '/' tUNUMBER '/' tUNUMBER { sl@0: yyMonth = $1; sl@0: yyDay = $3; sl@0: yyYear = $5; sl@0: } sl@0: | tISOBASE { sl@0: yyYear = $1 / 10000; sl@0: yyMonth = ($1 % 10000)/100; sl@0: yyDay = $1 % 100; sl@0: } sl@0: | tUNUMBER '-' tMONTH '-' tUNUMBER { sl@0: yyDay = $1; sl@0: yyMonth = $3; sl@0: yyYear = $5; sl@0: } sl@0: | tUNUMBER '-' tUNUMBER '-' tUNUMBER { sl@0: yyMonth = $3; sl@0: yyDay = $5; sl@0: yyYear = $1; sl@0: } sl@0: | tMONTH tUNUMBER { sl@0: yyMonth = $1; sl@0: yyDay = $2; sl@0: } sl@0: | tMONTH tUNUMBER ',' tUNUMBER { sl@0: yyMonth = $1; sl@0: yyDay = $2; sl@0: yyYear = $4; sl@0: } sl@0: | tUNUMBER tMONTH { sl@0: yyMonth = $2; sl@0: yyDay = $1; sl@0: } sl@0: | tEPOCH { sl@0: yyMonth = 1; sl@0: yyDay = 1; sl@0: yyYear = EPOCH; sl@0: } sl@0: | tUNUMBER tMONTH tUNUMBER { sl@0: yyMonth = $2; sl@0: yyDay = $1; sl@0: yyYear = $3; sl@0: } sl@0: ; sl@0: sl@0: ordMonth: tNEXT tMONTH { sl@0: yyMonthOrdinal = 1; sl@0: yyMonth = $2; sl@0: } sl@0: | tNEXT tUNUMBER tMONTH { sl@0: yyMonthOrdinal = $2; sl@0: yyMonth = $3; sl@0: } sl@0: ; sl@0: sl@0: iso : tISOBASE tZONE tISOBASE { sl@0: if ($2 != HOUR(- 7)) YYABORT; sl@0: yyYear = $1 / 10000; sl@0: yyMonth = ($1 % 10000)/100; sl@0: yyDay = $1 % 100; sl@0: yyHour = $3 / 10000; sl@0: yyMinutes = ($3 % 10000)/100; sl@0: yySeconds = $3 % 100; sl@0: } sl@0: | tISOBASE tZONE tUNUMBER ':' tUNUMBER ':' tUNUMBER { sl@0: if ($2 != HOUR(- 7)) YYABORT; sl@0: yyYear = $1 / 10000; sl@0: yyMonth = ($1 % 10000)/100; sl@0: yyDay = $1 % 100; sl@0: yyHour = $3; sl@0: yyMinutes = $5; sl@0: yySeconds = $7; sl@0: } sl@0: | tISOBASE tISOBASE { sl@0: yyYear = $1 / 10000; sl@0: yyMonth = ($1 % 10000)/100; sl@0: yyDay = $1 % 100; sl@0: yyHour = $2 / 10000; sl@0: yyMinutes = ($2 % 10000)/100; sl@0: yySeconds = $2 % 100; sl@0: } sl@0: ; sl@0: sl@0: trek : tSTARDATE tUNUMBER '.' tUNUMBER { sl@0: /* sl@0: * Offset computed year by -377 so that the returned years will sl@0: * be in a range accessible with a 32 bit clock seconds value sl@0: */ sl@0: yyYear = $2/1000 + 2323 - 377; sl@0: yyDay = 1; sl@0: yyMonth = 1; sl@0: yyRelDay += (($2%1000)*(365 + IsLeapYear(yyYear)))/1000; sl@0: yyRelSeconds += $4 * 144 * 60; sl@0: } sl@0: ; sl@0: sl@0: relspec : relunits tAGO { sl@0: yyRelSeconds *= -1; sl@0: yyRelMonth *= -1; sl@0: yyRelDay *= -1; sl@0: } sl@0: | relunits sl@0: ; sl@0: relunits : sign tUNUMBER unit { *yyRelPointer += $1 * $2 * $3; } sl@0: | tUNUMBER unit { *yyRelPointer += $1 * $2; } sl@0: | tNEXT unit { *yyRelPointer += $2; } sl@0: | tNEXT tUNUMBER unit { *yyRelPointer += $2 * $3; } sl@0: | unit { *yyRelPointer += $1; } sl@0: ; sl@0: sign : '-' { $$ = -1; } sl@0: | '+' { $$ = 1; } sl@0: ; sl@0: unit : tSEC_UNIT { $$ = $1; yyRelPointer = &yyRelSeconds; } sl@0: | tDAY_UNIT { $$ = $1; yyRelPointer = &yyRelDay; } sl@0: | tMONTH_UNIT { $$ = $1; yyRelPointer = &yyRelMonth; } sl@0: ; sl@0: sl@0: number : tUNUMBER sl@0: { sl@0: if (yyHaveTime && yyHaveDate && !yyHaveRel) { sl@0: yyYear = $1; sl@0: } else { sl@0: yyHaveTime++; sl@0: if ($1 < 100) { sl@0: yyHour = $1; sl@0: yyMinutes = 0; sl@0: } else { sl@0: yyHour = $1 / 100; sl@0: yyMinutes = $1 % 100; sl@0: } sl@0: yySeconds = 0; sl@0: yyMeridian = MER24; sl@0: } sl@0: } sl@0: ; sl@0: sl@0: o_merid : /* NULL */ { sl@0: $$ = MER24; sl@0: } sl@0: | tMERIDIAN { sl@0: $$ = $1; sl@0: } sl@0: ; sl@0: sl@0: %% sl@0: sl@0: /* sl@0: * Month and day table. sl@0: */ sl@0: static TABLE MonthDayTable[] = { sl@0: { "january", tMONTH, 1 }, sl@0: { "february", tMONTH, 2 }, sl@0: { "march", tMONTH, 3 }, sl@0: { "april", tMONTH, 4 }, sl@0: { "may", tMONTH, 5 }, sl@0: { "june", tMONTH, 6 }, sl@0: { "july", tMONTH, 7 }, sl@0: { "august", tMONTH, 8 }, sl@0: { "september", tMONTH, 9 }, sl@0: { "sept", tMONTH, 9 }, sl@0: { "october", tMONTH, 10 }, sl@0: { "november", tMONTH, 11 }, sl@0: { "december", tMONTH, 12 }, sl@0: { "sunday", tDAY, 0 }, sl@0: { "monday", tDAY, 1 }, sl@0: { "tuesday", tDAY, 2 }, sl@0: { "tues", tDAY, 2 }, sl@0: { "wednesday", tDAY, 3 }, sl@0: { "wednes", tDAY, 3 }, sl@0: { "thursday", tDAY, 4 }, sl@0: { "thur", tDAY, 4 }, sl@0: { "thurs", tDAY, 4 }, sl@0: { "friday", tDAY, 5 }, sl@0: { "saturday", tDAY, 6 }, sl@0: { NULL } sl@0: }; sl@0: sl@0: /* sl@0: * Time units table. sl@0: */ sl@0: static TABLE UnitsTable[] = { sl@0: { "year", tMONTH_UNIT, 12 }, sl@0: { "month", tMONTH_UNIT, 1 }, sl@0: { "fortnight", tDAY_UNIT, 14 }, sl@0: { "week", tDAY_UNIT, 7 }, sl@0: { "day", tDAY_UNIT, 1 }, sl@0: { "hour", tSEC_UNIT, 60 * 60 }, sl@0: { "minute", tSEC_UNIT, 60 }, sl@0: { "min", tSEC_UNIT, 60 }, sl@0: { "second", tSEC_UNIT, 1 }, sl@0: { "sec", tSEC_UNIT, 1 }, sl@0: { NULL } sl@0: }; sl@0: sl@0: /* sl@0: * Assorted relative-time words. sl@0: */ sl@0: static TABLE OtherTable[] = { sl@0: { "tomorrow", tDAY_UNIT, 1 }, sl@0: { "yesterday", tDAY_UNIT, -1 }, sl@0: { "today", tDAY_UNIT, 0 }, sl@0: { "now", tSEC_UNIT, 0 }, sl@0: { "last", tUNUMBER, -1 }, sl@0: { "this", tSEC_UNIT, 0 }, sl@0: { "next", tNEXT, 1 }, sl@0: #if 0 sl@0: { "first", tUNUMBER, 1 }, sl@0: { "second", tUNUMBER, 2 }, sl@0: { "third", tUNUMBER, 3 }, sl@0: { "fourth", tUNUMBER, 4 }, sl@0: { "fifth", tUNUMBER, 5 }, sl@0: { "sixth", tUNUMBER, 6 }, sl@0: { "seventh", tUNUMBER, 7 }, sl@0: { "eighth", tUNUMBER, 8 }, sl@0: { "ninth", tUNUMBER, 9 }, sl@0: { "tenth", tUNUMBER, 10 }, sl@0: { "eleventh", tUNUMBER, 11 }, sl@0: { "twelfth", tUNUMBER, 12 }, sl@0: #endif sl@0: { "ago", tAGO, 1 }, sl@0: { "epoch", tEPOCH, 0 }, sl@0: { "stardate", tSTARDATE, 0}, sl@0: { NULL } sl@0: }; sl@0: sl@0: /* sl@0: * The timezone table. (Note: This table was modified to not use any floating sl@0: * point constants to work around an SGI compiler bug). sl@0: */ sl@0: static TABLE TimezoneTable[] = { sl@0: { "gmt", tZONE, HOUR( 0) }, /* Greenwich Mean */ sl@0: { "ut", tZONE, HOUR( 0) }, /* Universal (Coordinated) */ sl@0: { "utc", tZONE, HOUR( 0) }, sl@0: { "uct", tZONE, HOUR( 0) }, /* Universal Coordinated Time */ sl@0: { "wet", tZONE, HOUR( 0) }, /* Western European */ sl@0: { "bst", tDAYZONE, HOUR( 0) }, /* British Summer */ sl@0: { "wat", tZONE, HOUR( 1) }, /* West Africa */ sl@0: { "at", tZONE, HOUR( 2) }, /* Azores */ sl@0: #if 0 sl@0: /* For completeness. BST is also British Summer, and GST is sl@0: * also Guam Standard. */ sl@0: { "bst", tZONE, HOUR( 3) }, /* Brazil Standard */ sl@0: { "gst", tZONE, HOUR( 3) }, /* Greenland Standard */ sl@0: #endif sl@0: { "nft", tZONE, HOUR( 7/2) }, /* Newfoundland */ sl@0: { "nst", tZONE, HOUR( 7/2) }, /* Newfoundland Standard */ sl@0: { "ndt", tDAYZONE, HOUR( 7/2) }, /* Newfoundland Daylight */ sl@0: { "ast", tZONE, HOUR( 4) }, /* Atlantic Standard */ sl@0: { "adt", tDAYZONE, HOUR( 4) }, /* Atlantic Daylight */ sl@0: { "est", tZONE, HOUR( 5) }, /* Eastern Standard */ sl@0: { "edt", tDAYZONE, HOUR( 5) }, /* Eastern Daylight */ sl@0: { "cst", tZONE, HOUR( 6) }, /* Central Standard */ sl@0: { "cdt", tDAYZONE, HOUR( 6) }, /* Central Daylight */ sl@0: { "mst", tZONE, HOUR( 7) }, /* Mountain Standard */ sl@0: { "mdt", tDAYZONE, HOUR( 7) }, /* Mountain Daylight */ sl@0: { "pst", tZONE, HOUR( 8) }, /* Pacific Standard */ sl@0: { "pdt", tDAYZONE, HOUR( 8) }, /* Pacific Daylight */ sl@0: { "yst", tZONE, HOUR( 9) }, /* Yukon Standard */ sl@0: { "ydt", tDAYZONE, HOUR( 9) }, /* Yukon Daylight */ sl@0: { "hst", tZONE, HOUR(10) }, /* Hawaii Standard */ sl@0: { "hdt", tDAYZONE, HOUR(10) }, /* Hawaii Daylight */ sl@0: { "cat", tZONE, HOUR(10) }, /* Central Alaska */ sl@0: { "ahst", tZONE, HOUR(10) }, /* Alaska-Hawaii Standard */ sl@0: { "nt", tZONE, HOUR(11) }, /* Nome */ sl@0: { "idlw", tZONE, HOUR(12) }, /* International Date Line West */ sl@0: { "cet", tZONE, -HOUR( 1) }, /* Central European */ sl@0: { "cest", tDAYZONE, -HOUR( 1) }, /* Central European Summer */ sl@0: { "met", tZONE, -HOUR( 1) }, /* Middle European */ sl@0: { "mewt", tZONE, -HOUR( 1) }, /* Middle European Winter */ sl@0: { "mest", tDAYZONE, -HOUR( 1) }, /* Middle European Summer */ sl@0: { "swt", tZONE, -HOUR( 1) }, /* Swedish Winter */ sl@0: { "sst", tDAYZONE, -HOUR( 1) }, /* Swedish Summer */ sl@0: { "fwt", tZONE, -HOUR( 1) }, /* French Winter */ sl@0: { "fst", tDAYZONE, -HOUR( 1) }, /* French Summer */ sl@0: { "eet", tZONE, -HOUR( 2) }, /* Eastern Europe, USSR Zone 1 */ sl@0: { "bt", tZONE, -HOUR( 3) }, /* Baghdad, USSR Zone 2 */ sl@0: { "it", tZONE, -HOUR( 7/2) }, /* Iran */ sl@0: { "zp4", tZONE, -HOUR( 4) }, /* USSR Zone 3 */ sl@0: { "zp5", tZONE, -HOUR( 5) }, /* USSR Zone 4 */ sl@0: { "ist", tZONE, -HOUR(11/2) }, /* Indian Standard */ sl@0: { "zp6", tZONE, -HOUR( 6) }, /* USSR Zone 5 */ sl@0: #if 0 sl@0: /* For completeness. NST is also Newfoundland Stanard, nad SST is sl@0: * also Swedish Summer. */ sl@0: { "nst", tZONE, -HOUR(13/2) }, /* North Sumatra */ sl@0: { "sst", tZONE, -HOUR( 7) }, /* South Sumatra, USSR Zone 6 */ sl@0: #endif /* 0 */ sl@0: { "wast", tZONE, -HOUR( 7) }, /* West Australian Standard */ sl@0: { "wadt", tDAYZONE, -HOUR( 7) }, /* West Australian Daylight */ sl@0: { "jt", tZONE, -HOUR(15/2) }, /* Java (3pm in Cronusland!) */ sl@0: { "cct", tZONE, -HOUR( 8) }, /* China Coast, USSR Zone 7 */ sl@0: { "jst", tZONE, -HOUR( 9) }, /* Japan Standard, USSR Zone 8 */ sl@0: { "jdt", tDAYZONE, -HOUR( 9) }, /* Japan Daylight */ sl@0: { "kst", tZONE, -HOUR( 9) }, /* Korea Standard */ sl@0: { "kdt", tDAYZONE, -HOUR( 9) }, /* Korea Daylight */ sl@0: { "cast", tZONE, -HOUR(19/2) }, /* Central Australian Standard */ sl@0: { "cadt", tDAYZONE, -HOUR(19/2) }, /* Central Australian Daylight */ sl@0: { "east", tZONE, -HOUR(10) }, /* Eastern Australian Standard */ sl@0: { "eadt", tDAYZONE, -HOUR(10) }, /* Eastern Australian Daylight */ sl@0: { "gst", tZONE, -HOUR(10) }, /* Guam Standard, USSR Zone 9 */ sl@0: { "nzt", tZONE, -HOUR(12) }, /* New Zealand */ sl@0: { "nzst", tZONE, -HOUR(12) }, /* New Zealand Standard */ sl@0: { "nzdt", tDAYZONE, -HOUR(12) }, /* New Zealand Daylight */ sl@0: { "idle", tZONE, -HOUR(12) }, /* International Date Line East */ sl@0: /* ADDED BY Marco Nijdam */ sl@0: { "dst", tDST, HOUR( 0) }, /* DST on (hour is ignored) */ sl@0: /* End ADDED */ sl@0: { NULL } sl@0: }; sl@0: sl@0: /* sl@0: * Military timezone table. sl@0: */ sl@0: static TABLE MilitaryTable[] = { sl@0: { "a", tZONE, HOUR( 1) }, sl@0: { "b", tZONE, HOUR( 2) }, sl@0: { "c", tZONE, HOUR( 3) }, sl@0: { "d", tZONE, HOUR( 4) }, sl@0: { "e", tZONE, HOUR( 5) }, sl@0: { "f", tZONE, HOUR( 6) }, sl@0: { "g", tZONE, HOUR( 7) }, sl@0: { "h", tZONE, HOUR( 8) }, sl@0: { "i", tZONE, HOUR( 9) }, sl@0: { "k", tZONE, HOUR( 10) }, sl@0: { "l", tZONE, HOUR( 11) }, sl@0: { "m", tZONE, HOUR( 12) }, sl@0: { "n", tZONE, HOUR(- 1) }, sl@0: { "o", tZONE, HOUR(- 2) }, sl@0: { "p", tZONE, HOUR(- 3) }, sl@0: { "q", tZONE, HOUR(- 4) }, sl@0: { "r", tZONE, HOUR(- 5) }, sl@0: { "s", tZONE, HOUR(- 6) }, sl@0: { "t", tZONE, HOUR(- 7) }, sl@0: { "u", tZONE, HOUR(- 8) }, sl@0: { "v", tZONE, HOUR(- 9) }, sl@0: { "w", tZONE, HOUR(-10) }, sl@0: { "x", tZONE, HOUR(-11) }, sl@0: { "y", tZONE, HOUR(-12) }, sl@0: { "z", tZONE, HOUR( 0) }, sl@0: { NULL } sl@0: }; sl@0: sl@0: sl@0: /* sl@0: * Dump error messages in the bit bucket. sl@0: */ sl@0: static void sl@0: yyerror(s) sl@0: char *s; sl@0: { sl@0: } sl@0: sl@0: sl@0: static time_t sl@0: ToSeconds(Hours, Minutes, Seconds, Meridian) sl@0: time_t Hours; sl@0: time_t Minutes; sl@0: time_t Seconds; sl@0: MERIDIAN Meridian; sl@0: { sl@0: if (Minutes < 0 || Minutes > 59 || Seconds < 0 || Seconds > 59) sl@0: return -1; sl@0: switch (Meridian) { sl@0: case MER24: sl@0: if (Hours < 0 || Hours > 23) sl@0: return -1; sl@0: return (Hours * 60L + Minutes) * 60L + Seconds; sl@0: case MERam: sl@0: if (Hours < 1 || Hours > 12) sl@0: return -1; sl@0: return ((Hours % 12) * 60L + Minutes) * 60L + Seconds; sl@0: case MERpm: sl@0: if (Hours < 1 || Hours > 12) sl@0: return -1; sl@0: return (((Hours % 12) + 12) * 60L + Minutes) * 60L + Seconds; sl@0: } sl@0: return -1; /* Should never be reached */ sl@0: } sl@0: sl@0: /* sl@0: *----------------------------------------------------------------------------- sl@0: * sl@0: * Convert -- sl@0: * sl@0: * Convert a {month, day, year, hours, minutes, seconds, meridian, dst} sl@0: * tuple into a clock seconds value. sl@0: * sl@0: * Results: sl@0: * 0 or -1 indicating success or failure. sl@0: * sl@0: * Side effects: sl@0: * Fills TimePtr with the computed value. sl@0: * sl@0: *----------------------------------------------------------------------------- sl@0: */ sl@0: static int sl@0: Convert(Month, Day, Year, Hours, Minutes, Seconds, Meridian, DSTmode, TimePtr) sl@0: time_t Month; sl@0: time_t Day; sl@0: time_t Year; sl@0: time_t Hours; sl@0: time_t Minutes; sl@0: time_t Seconds; sl@0: MERIDIAN Meridian; sl@0: DSTMODE DSTmode; sl@0: time_t *TimePtr; sl@0: { sl@0: static int DaysInMonth[12] = { sl@0: 31, 0, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 sl@0: }; sl@0: time_t tod; sl@0: time_t Julian; sl@0: int i; sl@0: sl@0: /* Figure out how many days are in February for the given year. sl@0: * Every year divisible by 4 is a leap year. sl@0: * But, every year divisible by 100 is not a leap year. sl@0: * But, every year divisible by 400 is a leap year after all. sl@0: */ sl@0: DaysInMonth[1] = IsLeapYear(Year) ? 29 : 28; sl@0: sl@0: /* Check the inputs for validity */ sl@0: if (Month < 1 || Month > 12 sl@0: || Year < START_OF_TIME || Year > END_OF_TIME sl@0: || Day < 1 || Day > DaysInMonth[(int)--Month]) sl@0: return -1; sl@0: sl@0: /* Start computing the value. First determine the number of days sl@0: * represented by the date, then multiply by the number of seconds/day. sl@0: */ sl@0: for (Julian = Day - 1, i = 0; i < Month; i++) sl@0: Julian += DaysInMonth[i]; sl@0: if (Year >= EPOCH) { sl@0: for (i = EPOCH; i < Year; i++) sl@0: Julian += 365 + IsLeapYear(i); sl@0: } else { sl@0: for (i = Year; i < EPOCH; i++) sl@0: Julian -= 365 + IsLeapYear(i); sl@0: } sl@0: Julian *= SECSPERDAY; sl@0: sl@0: /* Add the timezone offset ?? */ sl@0: Julian += yyTimezone * 60L; sl@0: sl@0: /* Add the number of seconds represented by the time component */ sl@0: if ((tod = ToSeconds(Hours, Minutes, Seconds, Meridian)) < 0) sl@0: return -1; sl@0: Julian += tod; sl@0: sl@0: /* Perform a preliminary DST compensation ?? */ sl@0: if (DSTmode == DSTon sl@0: || (DSTmode == DSTmaybe && TclpGetDate((TclpTime_t)&Julian, 0)->tm_isdst)) sl@0: Julian -= 60 * 60; sl@0: *TimePtr = Julian; sl@0: return 0; sl@0: } sl@0: sl@0: sl@0: static time_t sl@0: DSTcorrect(Start, Future) sl@0: time_t Start; sl@0: time_t Future; sl@0: { sl@0: time_t StartDay; sl@0: time_t FutureDay; sl@0: StartDay = (TclpGetDate((TclpTime_t)&Start, 0)->tm_hour + 1) % 24; sl@0: FutureDay = (TclpGetDate((TclpTime_t)&Future, 0)->tm_hour + 1) % 24; sl@0: return (Future - Start) + (StartDay - FutureDay) * 60L * 60L; sl@0: } sl@0: sl@0: sl@0: static time_t sl@0: NamedDay(Start, DayOrdinal, DayNumber) sl@0: time_t Start; sl@0: time_t DayOrdinal; sl@0: time_t DayNumber; sl@0: { sl@0: struct tm *tm; sl@0: time_t now; sl@0: sl@0: now = Start; sl@0: tm = TclpGetDate((TclpTime_t)&now, 0); sl@0: now += SECSPERDAY * ((DayNumber - tm->tm_wday + 7) % 7); sl@0: now += 7 * SECSPERDAY * (DayOrdinal <= 0 ? DayOrdinal : DayOrdinal - 1); sl@0: return DSTcorrect(Start, now); sl@0: } sl@0: sl@0: static time_t sl@0: NamedMonth(Start, MonthOrdinal, MonthNumber) sl@0: time_t Start; sl@0: time_t MonthOrdinal; sl@0: time_t MonthNumber; sl@0: { sl@0: struct tm *tm; sl@0: time_t now; sl@0: int result; sl@0: sl@0: now = Start; sl@0: tm = TclpGetDate((TclpTime_t)&now, 0); sl@0: /* To compute the next n'th month, we use this alg: sl@0: * add n to year value sl@0: * if currentMonth < requestedMonth decrement year value by 1 (so that sl@0: * doing next february from january gives us february of the current year) sl@0: * set day to 1, time to 0 sl@0: */ sl@0: tm->tm_year += MonthOrdinal; sl@0: if (tm->tm_mon < MonthNumber - 1) { sl@0: tm->tm_year--; sl@0: } sl@0: result = Convert(MonthNumber, (time_t) 1, tm->tm_year + TM_YEAR_BASE, sl@0: (time_t) 0, (time_t) 0, (time_t) 0, MER24, DSTmaybe, &now); sl@0: if (result < 0) { sl@0: return 0; sl@0: } sl@0: return DSTcorrect(Start, now); sl@0: } sl@0: sl@0: static int sl@0: RelativeMonth(Start, RelMonth, TimePtr) sl@0: time_t Start; sl@0: time_t RelMonth; sl@0: time_t *TimePtr; sl@0: { sl@0: struct tm *tm; sl@0: time_t Month; sl@0: time_t Year; sl@0: time_t Julian; sl@0: int result; sl@0: sl@0: if (RelMonth == 0) { sl@0: *TimePtr = 0; sl@0: return 0; sl@0: } sl@0: tm = TclpGetDate((TclpTime_t)&Start, 0); sl@0: Month = 12 * (tm->tm_year + TM_YEAR_BASE) + tm->tm_mon + RelMonth; sl@0: Year = Month / 12; sl@0: Month = Month % 12 + 1; sl@0: result = Convert(Month, (time_t) tm->tm_mday, Year, sl@0: (time_t) tm->tm_hour, (time_t) tm->tm_min, (time_t) tm->tm_sec, sl@0: MER24, DSTmaybe, &Julian); sl@0: sl@0: /* sl@0: * The Julian time returned above is behind by one day, if "month" sl@0: * or "year" is used to specify relative time and the GMT flag is true. sl@0: * This problem occurs only when the current time is closer to sl@0: * midnight, the difference being not more than its time difference sl@0: * with GMT. For example, in US/Pacific time zone, the problem occurs sl@0: * whenever the current time is between midnight to 8:00am or 7:00amDST. sl@0: * See Bug# 413397 for more details and sample script. sl@0: * To resolve this bug, we simply add the number of seconds corresponding sl@0: * to timezone difference with GMT to Julian time, if GMT flag is true. sl@0: */ sl@0: sl@0: if (TclDateTimezone == 0) { sl@0: Julian += TclpGetTimeZone((unsigned long) Start) * 60L; sl@0: } sl@0: sl@0: /* sl@0: * The following iteration takes into account the case were we jump sl@0: * into a "short month". Far example, "one month from Jan 31" will sl@0: * fail because there is no Feb 31. The code below will reduce the sl@0: * day and try converting the date until we succed or the date equals sl@0: * 28 (which always works unless the date is bad in another way). sl@0: */ sl@0: sl@0: while ((result != 0) && (tm->tm_mday > 28)) { sl@0: tm->tm_mday--; sl@0: result = Convert(Month, (time_t) tm->tm_mday, Year, sl@0: (time_t) tm->tm_hour, (time_t) tm->tm_min, (time_t) tm->tm_sec, sl@0: MER24, DSTmaybe, &Julian); sl@0: } sl@0: if (result != 0) { sl@0: return -1; sl@0: } sl@0: *TimePtr = DSTcorrect(Start, Julian); sl@0: return 0; sl@0: } sl@0: sl@0: sl@0: /* sl@0: *----------------------------------------------------------------------------- sl@0: * sl@0: * RelativeDay -- sl@0: * sl@0: * Given a starting time and a number of days before or after, compute the sl@0: * DST corrected difference between those dates. sl@0: * sl@0: * Results: sl@0: * 1 or -1 indicating success or failure. sl@0: * sl@0: * Side effects: sl@0: * Fills TimePtr with the computed value. sl@0: * sl@0: *----------------------------------------------------------------------------- sl@0: */ sl@0: sl@0: static int sl@0: RelativeDay(Start, RelDay, TimePtr) sl@0: time_t Start; sl@0: time_t RelDay; sl@0: time_t *TimePtr; sl@0: { sl@0: time_t new; sl@0: sl@0: new = Start + (RelDay * 60 * 60 * 24); sl@0: *TimePtr = DSTcorrect(Start, new); sl@0: return 1; sl@0: } sl@0: sl@0: static int sl@0: LookupWord(buff) sl@0: char *buff; sl@0: { sl@0: register char *p; sl@0: register char *q; sl@0: register TABLE *tp; sl@0: int i; sl@0: int abbrev; sl@0: sl@0: /* sl@0: * Make it lowercase. sl@0: */ sl@0: sl@0: Tcl_UtfToLower(buff); sl@0: sl@0: if (strcmp(buff, "am") == 0 || strcmp(buff, "a.m.") == 0) { sl@0: yylval.Meridian = MERam; sl@0: return tMERIDIAN; sl@0: } sl@0: if (strcmp(buff, "pm") == 0 || strcmp(buff, "p.m.") == 0) { sl@0: yylval.Meridian = MERpm; sl@0: return tMERIDIAN; sl@0: } sl@0: sl@0: /* sl@0: * See if we have an abbreviation for a month. sl@0: */ sl@0: if (strlen(buff) == 3) { sl@0: abbrev = 1; sl@0: } else if (strlen(buff) == 4 && buff[3] == '.') { sl@0: abbrev = 1; sl@0: buff[3] = '\0'; sl@0: } else { sl@0: abbrev = 0; sl@0: } sl@0: sl@0: for (tp = MonthDayTable; tp->name; tp++) { sl@0: if (abbrev) { sl@0: if (strncmp(buff, tp->name, 3) == 0) { sl@0: yylval.Number = tp->value; sl@0: return tp->type; sl@0: } sl@0: } else if (strcmp(buff, tp->name) == 0) { sl@0: yylval.Number = tp->value; sl@0: return tp->type; sl@0: } sl@0: } sl@0: sl@0: for (tp = TimezoneTable; tp->name; tp++) { sl@0: if (strcmp(buff, tp->name) == 0) { sl@0: yylval.Number = tp->value; sl@0: return tp->type; sl@0: } sl@0: } sl@0: sl@0: for (tp = UnitsTable; tp->name; tp++) { sl@0: if (strcmp(buff, tp->name) == 0) { sl@0: yylval.Number = tp->value; sl@0: return tp->type; sl@0: } sl@0: } sl@0: sl@0: /* sl@0: * Strip off any plural and try the units table again. sl@0: */ sl@0: i = strlen(buff) - 1; sl@0: if (buff[i] == 's') { sl@0: buff[i] = '\0'; sl@0: for (tp = UnitsTable; tp->name; tp++) { sl@0: if (strcmp(buff, tp->name) == 0) { sl@0: yylval.Number = tp->value; sl@0: return tp->type; sl@0: } sl@0: } sl@0: } sl@0: sl@0: for (tp = OtherTable; tp->name; tp++) { sl@0: if (strcmp(buff, tp->name) == 0) { sl@0: yylval.Number = tp->value; sl@0: return tp->type; sl@0: } sl@0: } sl@0: sl@0: /* sl@0: * Military timezones. sl@0: */ sl@0: if (buff[1] == '\0' && !(*buff & 0x80) sl@0: && isalpha(UCHAR(*buff))) { /* INTL: ISO only */ sl@0: for (tp = MilitaryTable; tp->name; tp++) { sl@0: if (strcmp(buff, tp->name) == 0) { sl@0: yylval.Number = tp->value; sl@0: return tp->type; sl@0: } sl@0: } sl@0: } sl@0: sl@0: /* sl@0: * Drop out any periods and try the timezone table again. sl@0: */ sl@0: for (i = 0, p = q = buff; *q; q++) sl@0: if (*q != '.') { sl@0: *p++ = *q; sl@0: } else { sl@0: i++; sl@0: } sl@0: *p = '\0'; sl@0: if (i) { sl@0: for (tp = TimezoneTable; tp->name; tp++) { sl@0: if (strcmp(buff, tp->name) == 0) { sl@0: yylval.Number = tp->value; sl@0: return tp->type; sl@0: } sl@0: } sl@0: } sl@0: sl@0: return tID; sl@0: } sl@0: sl@0: sl@0: static int sl@0: yylex() sl@0: { sl@0: register char c; sl@0: register char *p; sl@0: char buff[20]; sl@0: int Count; sl@0: sl@0: for ( ; ; ) { sl@0: while (isspace(UCHAR(*yyInput))) { sl@0: yyInput++; sl@0: } sl@0: sl@0: if (isdigit(UCHAR(c = *yyInput))) { /* INTL: digit */ sl@0: /* convert the string into a number; count the number of digits */ sl@0: Count = 0; sl@0: for (yylval.Number = 0; sl@0: isdigit(UCHAR(c = *yyInput++)); ) { /* INTL: digit */ sl@0: yylval.Number = 10 * yylval.Number + c - '0'; sl@0: Count++; sl@0: } sl@0: yyInput--; sl@0: /* A number with 6 or more digits is considered an ISO 8601 base */ sl@0: if (Count >= 6) { sl@0: return tISOBASE; sl@0: } else { sl@0: return tUNUMBER; sl@0: } sl@0: } sl@0: if (!(c & 0x80) && isalpha(UCHAR(c))) { /* INTL: ISO only. */ sl@0: for (p = buff; isalpha(UCHAR(c = *yyInput++)) /* INTL: ISO only. */ sl@0: || c == '.'; ) { sl@0: if (p < &buff[sizeof buff - 1]) { sl@0: *p++ = c; sl@0: } sl@0: } sl@0: *p = '\0'; sl@0: yyInput--; sl@0: return LookupWord(buff); sl@0: } sl@0: if (c != '(') { sl@0: return *yyInput++; sl@0: } sl@0: Count = 0; sl@0: do { sl@0: c = *yyInput++; sl@0: if (c == '\0') { sl@0: return c; sl@0: } else if (c == '(') { sl@0: Count++; sl@0: } else if (c == ')') { sl@0: Count--; sl@0: } sl@0: } while (Count > 0); sl@0: } sl@0: } sl@0: sl@0: /* sl@0: * Specify zone is of -50000 to force GMT. (This allows BST to work). sl@0: */ sl@0: sl@0: int sl@0: TclGetDate(p, now, zone, timePtr) sl@0: char *p; sl@0: Tcl_WideInt now; sl@0: long zone; sl@0: Tcl_WideInt *timePtr; sl@0: { sl@0: struct tm *tm; sl@0: time_t Start; sl@0: time_t Time; sl@0: time_t tod; sl@0: int thisyear; sl@0: sl@0: yyInput = p; sl@0: /* now has to be cast to a time_t for 64bit compliance */ sl@0: Start = (time_t) now; sl@0: tm = TclpGetDate((TclpTime_t) &Start, (zone == -50000)); sl@0: thisyear = tm->tm_year + TM_YEAR_BASE; sl@0: yyYear = thisyear; sl@0: yyMonth = tm->tm_mon + 1; sl@0: yyDay = tm->tm_mday; sl@0: yyTimezone = zone; sl@0: if (zone == -50000) { sl@0: yyDSTmode = DSToff; /* assume GMT */ sl@0: yyTimezone = 0; sl@0: } else { sl@0: yyDSTmode = DSTmaybe; sl@0: } sl@0: yyHour = 0; sl@0: yyMinutes = 0; sl@0: yySeconds = 0; sl@0: yyMeridian = MER24; sl@0: yyRelSeconds = 0; sl@0: yyRelMonth = 0; sl@0: yyRelDay = 0; sl@0: yyRelPointer = NULL; sl@0: sl@0: yyHaveDate = 0; sl@0: yyHaveDay = 0; sl@0: yyHaveOrdinalMonth = 0; sl@0: yyHaveRel = 0; sl@0: yyHaveTime = 0; sl@0: yyHaveZone = 0; sl@0: sl@0: if (yyparse() || yyHaveTime > 1 || yyHaveZone > 1 || yyHaveDate > 1 || sl@0: yyHaveDay > 1 || yyHaveOrdinalMonth > 1) { sl@0: return -1; sl@0: } sl@0: sl@0: if (yyHaveDate || yyHaveTime || yyHaveDay) { sl@0: if (TclDateYear < 0) { sl@0: TclDateYear = -TclDateYear; sl@0: } sl@0: /* sl@0: * The following line handles years that are specified using sl@0: * only two digits. The line of code below implements a policy sl@0: * defined by the X/Open workgroup on the millinium rollover. sl@0: * Note: some of those dates may not actually be valid on some sl@0: * platforms. The POSIX standard startes that the dates 70-99 sl@0: * shall refer to 1970-1999 and 00-38 shall refer to 2000-2038. sl@0: * This later definition should work on all platforms. sl@0: */ sl@0: sl@0: if (TclDateYear < 100) { sl@0: if (TclDateYear >= 69) { sl@0: TclDateYear += 1900; sl@0: } else { sl@0: TclDateYear += 2000; sl@0: } sl@0: } sl@0: if (Convert(yyMonth, yyDay, yyYear, yyHour, yyMinutes, yySeconds, sl@0: yyMeridian, yyDSTmode, &Start) < 0) { sl@0: return -1; sl@0: } sl@0: } else { sl@0: Start = (time_t) now; sl@0: if (!yyHaveRel) { sl@0: Start -= ((tm->tm_hour * 60L * 60L) + sl@0: tm->tm_min * 60L) + tm->tm_sec; sl@0: } sl@0: } sl@0: sl@0: Start += yyRelSeconds; sl@0: if (RelativeMonth(Start, yyRelMonth, &Time) < 0) { sl@0: return -1; sl@0: } sl@0: Start += Time; sl@0: sl@0: if (RelativeDay(Start, yyRelDay, &Time) < 0) { sl@0: return -1; sl@0: } sl@0: Start += Time; sl@0: sl@0: if (yyHaveDay && !yyHaveDate) { sl@0: tod = NamedDay(Start, yyDayOrdinal, yyDayNumber); sl@0: Start += tod; sl@0: } sl@0: sl@0: if (yyHaveOrdinalMonth) { sl@0: tod = NamedMonth(Start, yyMonthOrdinal, yyMonth); sl@0: Start += tod; sl@0: } sl@0: sl@0: *timePtr = Start; sl@0: return 0; sl@0: }