936 lines
25 KiB
Plaintext
936 lines
25 KiB
Plaintext
/*
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* tclGetDate.y --
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*
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* Contains yacc grammar for parsing date and time strings
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* based on getdate.y.
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*
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* Copyright (c) 1992-1995 Karl Lehenbauer and Mark Diekhans.
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* Copyright (c) 1995-1996 Sun Microsystems, Inc.
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*
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* See the file "license.terms" for information on usage and redistribution
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* of this file, and for a DISCLAIMER OF ALL WARRANTIES.
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*
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* SCCS: @(#) tclGetDate.y 1.26 96/07/23 16:09:45
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*/
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%{
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/*
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* tclDate.c --
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*
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* This file is generated from a yacc grammar defined in
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* the file tclGetDate.y
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*
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* Copyright (c) 1992-1995 Karl Lehenbauer and Mark Diekhans.
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* Copyright (c) 1995-1996 Sun Microsystems, Inc.
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*
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* See the file "license.terms" for information on usage and redistribution
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* of this file, and for a DISCLAIMER OF ALL WARRANTIES.
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*
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* SCCSID
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*/
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#include "tclInt.h"
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#include "tclPort.h"
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#ifdef MAC_TCL
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# define EPOCH 1904
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# define START_OF_TIME 1904
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# define END_OF_TIME 2039
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#else
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# define EPOCH 1970
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# define START_OF_TIME 1902
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# define END_OF_TIME 2037
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#endif
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#define HOUR(x) ((int) (60 * x))
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#define SECSPERDAY (24L * 60L * 60L)
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/*
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* An entry in the lexical lookup table.
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*/
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typedef struct _TABLE {
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char *name;
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int type;
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time_t value;
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} TABLE;
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/*
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* Daylight-savings mode: on, off, or not yet known.
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*/
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typedef enum _DSTMODE {
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DSTon, DSToff, DSTmaybe
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} DSTMODE;
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/*
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* Meridian: am, pm, or 24-hour style.
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*/
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typedef enum _MERIDIAN {
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MERam, MERpm, MER24
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} MERIDIAN;
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/*
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* Global variables. We could get rid of most of these by using a good
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* union as the yacc stack. (This routine was originally written before
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* yacc had the %union construct.) Maybe someday; right now we only use
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* the %union very rarely.
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*/
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static char *yyInput;
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static DSTMODE yyDSTmode;
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static time_t yyDayOrdinal;
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static time_t yyDayNumber;
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static int yyHaveDate;
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static int yyHaveDay;
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static int yyHaveRel;
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static int yyHaveTime;
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static int yyHaveZone;
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static time_t yyTimezone;
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static time_t yyDay;
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static time_t yyHour;
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static time_t yyMinutes;
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static time_t yyMonth;
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static time_t yySeconds;
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static time_t yyYear;
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static MERIDIAN yyMeridian;
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static time_t yyRelMonth;
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static time_t yyRelSeconds;
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/*
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* Prototypes of internal functions.
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*/
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static void
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yyerror _ANSI_ARGS_((char *s));
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static time_t
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ToSeconds _ANSI_ARGS_((time_t Hours,
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time_t Minutes,
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time_t Seconds,
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MERIDIAN Meridian));
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static int
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Convert _ANSI_ARGS_((time_t Month,
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time_t Day,
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time_t Year,
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time_t Hours,
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time_t Minutes,
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time_t Seconds,
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MERIDIAN Meridia,
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DSTMODE DSTmode,
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time_t *TimePtr));
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static time_t
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DSTcorrect _ANSI_ARGS_((time_t Start,
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time_t Future));
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static time_t
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RelativeDate _ANSI_ARGS_((time_t Start,
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time_t DayOrdinal,
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time_t DayNumber));
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static int
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RelativeMonth _ANSI_ARGS_((time_t Start,
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time_t RelMonth,
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time_t *TimePtr));
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static int
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LookupWord _ANSI_ARGS_((char *buff));
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static int
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yylex _ANSI_ARGS_((void));
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int
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yyparse _ANSI_ARGS_((void));
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%}
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%union {
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time_t Number;
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enum _MERIDIAN Meridian;
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}
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%token tAGO tDAY tDAYZONE tID tMERIDIAN tMINUTE_UNIT tMONTH tMONTH_UNIT
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%token tSEC_UNIT tSNUMBER tUNUMBER tZONE tEPOCH tDST
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%type <Number> tDAY tDAYZONE tMINUTE_UNIT tMONTH tMONTH_UNIT tDST
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%type <Number> tSEC_UNIT tSNUMBER tUNUMBER tZONE
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%type <Meridian> tMERIDIAN o_merid
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%%
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spec : /* NULL */
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| spec item
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;
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item : time {
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yyHaveTime++;
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}
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| zone {
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yyHaveZone++;
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}
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| date {
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yyHaveDate++;
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}
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| day {
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yyHaveDay++;
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}
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| rel {
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yyHaveRel++;
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}
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| number
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;
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time : tUNUMBER tMERIDIAN {
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yyHour = $1;
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yyMinutes = 0;
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yySeconds = 0;
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yyMeridian = $2;
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}
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| tUNUMBER ':' tUNUMBER o_merid {
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yyHour = $1;
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yyMinutes = $3;
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yySeconds = 0;
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yyMeridian = $4;
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}
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| tUNUMBER ':' tUNUMBER tSNUMBER {
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yyHour = $1;
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yyMinutes = $3;
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yyMeridian = MER24;
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yyDSTmode = DSToff;
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yyTimezone = - ($4 % 100 + ($4 / 100) * 60);
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}
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| tUNUMBER ':' tUNUMBER ':' tUNUMBER o_merid {
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yyHour = $1;
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yyMinutes = $3;
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yySeconds = $5;
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yyMeridian = $6;
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}
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| tUNUMBER ':' tUNUMBER ':' tUNUMBER tSNUMBER {
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yyHour = $1;
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yyMinutes = $3;
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yySeconds = $5;
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yyMeridian = MER24;
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yyDSTmode = DSToff;
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yyTimezone = - ($6 % 100 + ($6 / 100) * 60);
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}
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;
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zone : tZONE tDST {
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yyTimezone = $1;
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yyDSTmode = DSTon;
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}
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| tZONE {
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yyTimezone = $1;
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yyDSTmode = DSToff;
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}
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| tDAYZONE {
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yyTimezone = $1;
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yyDSTmode = DSTon;
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}
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;
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day : tDAY {
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yyDayOrdinal = 1;
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yyDayNumber = $1;
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}
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| tDAY ',' {
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yyDayOrdinal = 1;
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yyDayNumber = $1;
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}
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| tUNUMBER tDAY {
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yyDayOrdinal = $1;
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yyDayNumber = $2;
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}
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;
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date : tUNUMBER '/' tUNUMBER {
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yyMonth = $1;
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yyDay = $3;
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}
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| tUNUMBER '/' tUNUMBER '/' tUNUMBER {
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yyMonth = $1;
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yyDay = $3;
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yyYear = $5;
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}
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| tMONTH tUNUMBER {
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yyMonth = $1;
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yyDay = $2;
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}
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| tMONTH tUNUMBER ',' tUNUMBER {
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yyMonth = $1;
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yyDay = $2;
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yyYear = $4;
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}
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| tUNUMBER tMONTH {
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yyMonth = $2;
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yyDay = $1;
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}
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| tEPOCH {
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yyMonth = 1;
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yyDay = 1;
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yyYear = EPOCH;
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}
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| tUNUMBER tMONTH tUNUMBER {
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yyMonth = $2;
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yyDay = $1;
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yyYear = $3;
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}
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;
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rel : relunit tAGO {
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yyRelSeconds = -yyRelSeconds;
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yyRelMonth = -yyRelMonth;
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}
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| relunit
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;
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relunit : tUNUMBER tMINUTE_UNIT {
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yyRelSeconds += $1 * $2 * 60L;
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}
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| tSNUMBER tMINUTE_UNIT {
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yyRelSeconds += $1 * $2 * 60L;
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}
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| tMINUTE_UNIT {
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yyRelSeconds += $1 * 60L;
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}
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| tSNUMBER tSEC_UNIT {
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yyRelSeconds += $1;
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}
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| tUNUMBER tSEC_UNIT {
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yyRelSeconds += $1;
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}
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| tSEC_UNIT {
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yyRelSeconds++;
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}
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| tSNUMBER tMONTH_UNIT {
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yyRelMonth += $1 * $2;
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}
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| tUNUMBER tMONTH_UNIT {
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yyRelMonth += $1 * $2;
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}
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| tMONTH_UNIT {
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yyRelMonth += $1;
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}
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;
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number : tUNUMBER {
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if (yyHaveTime && yyHaveDate && !yyHaveRel)
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yyYear = $1;
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else {
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yyHaveTime++;
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if ($1 < 100) {
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yyHour = $1;
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yyMinutes = 0;
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}
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else {
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yyHour = $1 / 100;
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yyMinutes = $1 % 100;
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}
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yySeconds = 0;
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yyMeridian = MER24;
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}
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}
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;
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o_merid : /* NULL */ {
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$$ = MER24;
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}
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| tMERIDIAN {
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$$ = $1;
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}
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;
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%%
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/*
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* Month and day table.
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*/
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static TABLE MonthDayTable[] = {
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{ "january", tMONTH, 1 },
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{ "february", tMONTH, 2 },
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{ "march", tMONTH, 3 },
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{ "april", tMONTH, 4 },
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{ "may", tMONTH, 5 },
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{ "june", tMONTH, 6 },
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{ "july", tMONTH, 7 },
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{ "august", tMONTH, 8 },
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{ "september", tMONTH, 9 },
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{ "sept", tMONTH, 9 },
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{ "october", tMONTH, 10 },
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{ "november", tMONTH, 11 },
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{ "december", tMONTH, 12 },
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{ "sunday", tDAY, 0 },
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{ "monday", tDAY, 1 },
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{ "tuesday", tDAY, 2 },
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{ "tues", tDAY, 2 },
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{ "wednesday", tDAY, 3 },
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{ "wednes", tDAY, 3 },
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{ "thursday", tDAY, 4 },
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{ "thur", tDAY, 4 },
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{ "thurs", tDAY, 4 },
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{ "friday", tDAY, 5 },
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{ "saturday", tDAY, 6 },
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{ NULL }
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};
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/*
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* Time units table.
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*/
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static TABLE UnitsTable[] = {
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{ "year", tMONTH_UNIT, 12 },
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{ "month", tMONTH_UNIT, 1 },
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{ "fortnight", tMINUTE_UNIT, 14 * 24 * 60 },
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{ "week", tMINUTE_UNIT, 7 * 24 * 60 },
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{ "day", tMINUTE_UNIT, 1 * 24 * 60 },
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{ "hour", tMINUTE_UNIT, 60 },
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{ "minute", tMINUTE_UNIT, 1 },
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{ "min", tMINUTE_UNIT, 1 },
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{ "second", tSEC_UNIT, 1 },
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{ "sec", tSEC_UNIT, 1 },
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{ NULL }
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};
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/*
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* Assorted relative-time words.
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*/
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static TABLE OtherTable[] = {
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{ "tomorrow", tMINUTE_UNIT, 1 * 24 * 60 },
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{ "yesterday", tMINUTE_UNIT, -1 * 24 * 60 },
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{ "today", tMINUTE_UNIT, 0 },
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{ "now", tMINUTE_UNIT, 0 },
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{ "last", tUNUMBER, -1 },
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{ "this", tMINUTE_UNIT, 0 },
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{ "next", tUNUMBER, 2 },
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#if 0
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{ "first", tUNUMBER, 1 },
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/* { "second", tUNUMBER, 2 }, */
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{ "third", tUNUMBER, 3 },
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{ "fourth", tUNUMBER, 4 },
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{ "fifth", tUNUMBER, 5 },
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{ "sixth", tUNUMBER, 6 },
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{ "seventh", tUNUMBER, 7 },
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{ "eighth", tUNUMBER, 8 },
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{ "ninth", tUNUMBER, 9 },
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{ "tenth", tUNUMBER, 10 },
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{ "eleventh", tUNUMBER, 11 },
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{ "twelfth", tUNUMBER, 12 },
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#endif
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{ "ago", tAGO, 1 },
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{ "epoch", tEPOCH, 0 },
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{ NULL }
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};
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/*
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* The timezone table. (Note: This table was modified to not use any floating
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* point constants to work around an SGI compiler bug).
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*/
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static TABLE TimezoneTable[] = {
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{ "gmt", tZONE, HOUR( 0) }, /* Greenwich Mean */
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{ "ut", tZONE, HOUR( 0) }, /* Universal (Coordinated) */
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{ "utc", tZONE, HOUR( 0) },
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{ "wet", tZONE, HOUR( 0) } , /* Western European */
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{ "bst", tDAYZONE, HOUR( 0) }, /* British Summer */
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{ "wat", tZONE, HOUR( 1) }, /* West Africa */
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{ "at", tZONE, HOUR( 2) }, /* Azores */
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#if 0
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/* For completeness. BST is also British Summer, and GST is
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* also Guam Standard. */
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{ "bst", tZONE, HOUR( 3) }, /* Brazil Standard */
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{ "gst", tZONE, HOUR( 3) }, /* Greenland Standard */
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#endif
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{ "nft", tZONE, HOUR( 7/2) }, /* Newfoundland */
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{ "nst", tZONE, HOUR( 7/2) }, /* Newfoundland Standard */
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{ "ndt", tDAYZONE, HOUR( 7/2) }, /* Newfoundland Daylight */
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{ "ast", tZONE, HOUR( 4) }, /* Atlantic Standard */
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{ "adt", tDAYZONE, HOUR( 4) }, /* Atlantic Daylight */
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{ "est", tZONE, HOUR( 5) }, /* Eastern Standard */
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{ "edt", tDAYZONE, HOUR( 5) }, /* Eastern Daylight */
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{ "cst", tZONE, HOUR( 6) }, /* Central Standard */
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{ "cdt", tDAYZONE, HOUR( 6) }, /* Central Daylight */
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{ "mst", tZONE, HOUR( 7) }, /* Mountain Standard */
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{ "mdt", tDAYZONE, HOUR( 7) }, /* Mountain Daylight */
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{ "pst", tZONE, HOUR( 8) }, /* Pacific Standard */
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{ "pdt", tDAYZONE, HOUR( 8) }, /* Pacific Daylight */
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{ "yst", tZONE, HOUR( 9) }, /* Yukon Standard */
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{ "ydt", tDAYZONE, HOUR( 9) }, /* Yukon Daylight */
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{ "hst", tZONE, HOUR(10) }, /* Hawaii Standard */
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{ "hdt", tDAYZONE, HOUR(10) }, /* Hawaii Daylight */
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{ "cat", tZONE, HOUR(10) }, /* Central Alaska */
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{ "ahst", tZONE, HOUR(10) }, /* Alaska-Hawaii Standard */
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{ "nt", tZONE, HOUR(11) }, /* Nome */
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{ "idlw", tZONE, HOUR(12) }, /* International Date Line West */
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{ "cet", tZONE, -HOUR( 1) }, /* Central European */
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{ "met", tZONE, -HOUR( 1) }, /* Middle European */
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{ "mewt", tZONE, -HOUR( 1) }, /* Middle European Winter */
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{ "mest", tDAYZONE, -HOUR( 1) }, /* Middle European Summer */
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{ "swt", tZONE, -HOUR( 1) }, /* Swedish Winter */
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{ "sst", tDAYZONE, -HOUR( 1) }, /* Swedish Summer */
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{ "fwt", tZONE, -HOUR( 1) }, /* French Winter */
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{ "fst", tDAYZONE, -HOUR( 1) }, /* French Summer */
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{ "eet", tZONE, -HOUR( 2) }, /* Eastern Europe, USSR Zone 1 */
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{ "bt", tZONE, -HOUR( 3) }, /* Baghdad, USSR Zone 2 */
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{ "it", tZONE, -HOUR( 7/2) }, /* Iran */
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{ "zp4", tZONE, -HOUR( 4) }, /* USSR Zone 3 */
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{ "zp5", tZONE, -HOUR( 5) }, /* USSR Zone 4 */
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{ "ist", tZONE, -HOUR(11/2) }, /* Indian Standard */
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{ "zp6", tZONE, -HOUR( 6) }, /* USSR Zone 5 */
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#if 0
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/* For completeness. NST is also Newfoundland Stanard, nad SST is
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* also Swedish Summer. */
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{ "nst", tZONE, -HOUR(13/2) }, /* North Sumatra */
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{ "sst", tZONE, -HOUR( 7) }, /* South Sumatra, USSR Zone 6 */
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#endif /* 0 */
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{ "wast", tZONE, -HOUR( 7) }, /* West Australian Standard */
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{ "wadt", tDAYZONE, -HOUR( 7) }, /* West Australian Daylight */
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{ "jt", tZONE, -HOUR(15/2) }, /* Java (3pm in Cronusland!) */
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{ "cct", tZONE, -HOUR( 8) }, /* China Coast, USSR Zone 7 */
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{ "jst", tZONE, -HOUR( 9) }, /* Japan Standard, USSR Zone 8 */
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{ "cast", tZONE, -HOUR(19/2) }, /* Central Australian Standard */
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{ "cadt", tDAYZONE, -HOUR(19/2) }, /* Central Australian Daylight */
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{ "east", tZONE, -HOUR(10) }, /* Eastern Australian Standard */
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{ "eadt", tDAYZONE, -HOUR(10) }, /* Eastern Australian Daylight */
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{ "gst", tZONE, -HOUR(10) }, /* Guam Standard, USSR Zone 9 */
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{ "nzt", tZONE, -HOUR(12) }, /* New Zealand */
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{ "nzst", tZONE, -HOUR(12) }, /* New Zealand Standard */
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{ "nzdt", tDAYZONE, -HOUR(12) }, /* New Zealand Daylight */
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{ "idle", tZONE, -HOUR(12) }, /* International Date Line East */
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/* ADDED BY Marco Nijdam */
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{ "dst", tDST, HOUR( 0) }, /* DST on (hour is ignored) */
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/* End ADDED */
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{ NULL }
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};
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/*
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* Military timezone table.
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*/
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static TABLE MilitaryTable[] = {
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{ "a", tZONE, HOUR( 1) },
|
|
{ "b", tZONE, HOUR( 2) },
|
|
{ "c", tZONE, HOUR( 3) },
|
|
{ "d", tZONE, HOUR( 4) },
|
|
{ "e", tZONE, HOUR( 5) },
|
|
{ "f", tZONE, HOUR( 6) },
|
|
{ "g", tZONE, HOUR( 7) },
|
|
{ "h", tZONE, HOUR( 8) },
|
|
{ "i", tZONE, HOUR( 9) },
|
|
{ "k", tZONE, HOUR( 10) },
|
|
{ "l", tZONE, HOUR( 11) },
|
|
{ "m", tZONE, HOUR( 12) },
|
|
{ "n", tZONE, HOUR(- 1) },
|
|
{ "o", tZONE, HOUR(- 2) },
|
|
{ "p", tZONE, HOUR(- 3) },
|
|
{ "q", tZONE, HOUR(- 4) },
|
|
{ "r", tZONE, HOUR(- 5) },
|
|
{ "s", tZONE, HOUR(- 6) },
|
|
{ "t", tZONE, HOUR(- 7) },
|
|
{ "u", tZONE, HOUR(- 8) },
|
|
{ "v", tZONE, HOUR(- 9) },
|
|
{ "w", tZONE, HOUR(-10) },
|
|
{ "x", tZONE, HOUR(-11) },
|
|
{ "y", tZONE, HOUR(-12) },
|
|
{ "z", tZONE, HOUR( 0) },
|
|
{ NULL }
|
|
};
|
|
|
|
|
|
/*
|
|
* Dump error messages in the bit bucket.
|
|
*/
|
|
static void
|
|
yyerror(s)
|
|
char *s;
|
|
{
|
|
}
|
|
|
|
|
|
static time_t
|
|
ToSeconds(Hours, Minutes, Seconds, Meridian)
|
|
time_t Hours;
|
|
time_t Minutes;
|
|
time_t Seconds;
|
|
MERIDIAN Meridian;
|
|
{
|
|
if (Minutes < 0 || Minutes > 59 || Seconds < 0 || Seconds > 59)
|
|
return -1;
|
|
switch (Meridian) {
|
|
case MER24:
|
|
if (Hours < 0 || Hours > 23)
|
|
return -1;
|
|
return (Hours * 60L + Minutes) * 60L + Seconds;
|
|
case MERam:
|
|
if (Hours < 1 || Hours > 12)
|
|
return -1;
|
|
return ((Hours % 12) * 60L + Minutes) * 60L + Seconds;
|
|
case MERpm:
|
|
if (Hours < 1 || Hours > 12)
|
|
return -1;
|
|
return (((Hours % 12) + 12) * 60L + Minutes) * 60L + Seconds;
|
|
}
|
|
return -1; /* Should never be reached */
|
|
}
|
|
|
|
|
|
static int
|
|
Convert(Month, Day, Year, Hours, Minutes, Seconds, Meridian, DSTmode, TimePtr)
|
|
time_t Month;
|
|
time_t Day;
|
|
time_t Year;
|
|
time_t Hours;
|
|
time_t Minutes;
|
|
time_t Seconds;
|
|
MERIDIAN Meridian;
|
|
DSTMODE DSTmode;
|
|
time_t *TimePtr;
|
|
{
|
|
static int DaysInMonth[12] = {
|
|
31, 0, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31
|
|
};
|
|
time_t tod;
|
|
time_t Julian;
|
|
int i;
|
|
|
|
if (Year < 0)
|
|
Year = -Year;
|
|
if (Year < 100)
|
|
Year += 1900;
|
|
DaysInMonth[1] = Year % 4 == 0 && (Year % 100 != 0 || Year % 400 == 0)
|
|
? 29 : 28;
|
|
if (Month < 1 || Month > 12
|
|
|| Year < START_OF_TIME || Year > END_OF_TIME
|
|
|| Day < 1 || Day > DaysInMonth[(int)--Month])
|
|
return -1;
|
|
|
|
for (Julian = Day - 1, i = 0; i < Month; i++)
|
|
Julian += DaysInMonth[i];
|
|
if (Year >= EPOCH) {
|
|
for (i = EPOCH; i < Year; i++)
|
|
Julian += 365 + (i % 4 == 0);
|
|
} else {
|
|
for (i = Year; i < EPOCH; i++)
|
|
Julian -= 365 + (i % 4 == 0);
|
|
}
|
|
Julian *= SECSPERDAY;
|
|
Julian += yyTimezone * 60L;
|
|
if ((tod = ToSeconds(Hours, Minutes, Seconds, Meridian)) < 0)
|
|
return -1;
|
|
Julian += tod;
|
|
if (DSTmode == DSTon
|
|
|| (DSTmode == DSTmaybe && TclpGetDate(&Julian, 0)->tm_isdst))
|
|
Julian -= 60 * 60;
|
|
*TimePtr = Julian;
|
|
return 0;
|
|
}
|
|
|
|
|
|
static time_t
|
|
DSTcorrect(Start, Future)
|
|
time_t Start;
|
|
time_t Future;
|
|
{
|
|
time_t StartDay;
|
|
time_t FutureDay;
|
|
|
|
StartDay = (TclpGetDate(&Start, 0)->tm_hour + 1) % 24;
|
|
FutureDay = (TclpGetDate(&Future, 0)->tm_hour + 1) % 24;
|
|
return (Future - Start) + (StartDay - FutureDay) * 60L * 60L;
|
|
}
|
|
|
|
|
|
static time_t
|
|
RelativeDate(Start, DayOrdinal, DayNumber)
|
|
time_t Start;
|
|
time_t DayOrdinal;
|
|
time_t DayNumber;
|
|
{
|
|
struct tm *tm;
|
|
time_t now;
|
|
|
|
now = Start;
|
|
tm = TclpGetDate(&now, 0);
|
|
now += SECSPERDAY * ((DayNumber - tm->tm_wday + 7) % 7);
|
|
now += 7 * SECSPERDAY * (DayOrdinal <= 0 ? DayOrdinal : DayOrdinal - 1);
|
|
return DSTcorrect(Start, now);
|
|
}
|
|
|
|
|
|
static int
|
|
RelativeMonth(Start, RelMonth, TimePtr)
|
|
time_t Start;
|
|
time_t RelMonth;
|
|
time_t *TimePtr;
|
|
{
|
|
struct tm *tm;
|
|
time_t Month;
|
|
time_t Year;
|
|
time_t Julian;
|
|
|
|
if (RelMonth == 0) {
|
|
*TimePtr = 0;
|
|
return 0;
|
|
}
|
|
tm = TclpGetDate(&Start, 0);
|
|
Month = 12 * tm->tm_year + tm->tm_mon + RelMonth;
|
|
Year = Month / 12;
|
|
Month = Month % 12 + 1;
|
|
if (Convert(Month, (time_t)tm->tm_mday, Year,
|
|
(time_t)tm->tm_hour, (time_t)tm->tm_min, (time_t)tm->tm_sec,
|
|
MER24, DSTmaybe, &Julian) < 0)
|
|
return -1;
|
|
*TimePtr = DSTcorrect(Start, Julian);
|
|
return 0;
|
|
}
|
|
|
|
|
|
static int
|
|
LookupWord(buff)
|
|
char *buff;
|
|
{
|
|
register char *p;
|
|
register char *q;
|
|
register TABLE *tp;
|
|
int i;
|
|
int abbrev;
|
|
|
|
/*
|
|
* Make it lowercase.
|
|
*/
|
|
for (p = buff; *p; p++) {
|
|
if (isupper(*p)) {
|
|
*p = (char) tolower(*p);
|
|
}
|
|
}
|
|
|
|
if (strcmp(buff, "am") == 0 || strcmp(buff, "a.m.") == 0) {
|
|
yylval.Meridian = MERam;
|
|
return tMERIDIAN;
|
|
}
|
|
if (strcmp(buff, "pm") == 0 || strcmp(buff, "p.m.") == 0) {
|
|
yylval.Meridian = MERpm;
|
|
return tMERIDIAN;
|
|
}
|
|
|
|
/*
|
|
* See if we have an abbreviation for a month.
|
|
*/
|
|
if (strlen(buff) == 3) {
|
|
abbrev = 1;
|
|
} else if (strlen(buff) == 4 && buff[3] == '.') {
|
|
abbrev = 1;
|
|
buff[3] = '\0';
|
|
} else {
|
|
abbrev = 0;
|
|
}
|
|
|
|
for (tp = MonthDayTable; tp->name; tp++) {
|
|
if (abbrev) {
|
|
if (strncmp(buff, tp->name, 3) == 0) {
|
|
yylval.Number = tp->value;
|
|
return tp->type;
|
|
}
|
|
} else if (strcmp(buff, tp->name) == 0) {
|
|
yylval.Number = tp->value;
|
|
return tp->type;
|
|
}
|
|
}
|
|
|
|
for (tp = TimezoneTable; tp->name; tp++) {
|
|
if (strcmp(buff, tp->name) == 0) {
|
|
yylval.Number = tp->value;
|
|
return tp->type;
|
|
}
|
|
}
|
|
|
|
for (tp = UnitsTable; tp->name; tp++) {
|
|
if (strcmp(buff, tp->name) == 0) {
|
|
yylval.Number = tp->value;
|
|
return tp->type;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Strip off any plural and try the units table again.
|
|
*/
|
|
i = strlen(buff) - 1;
|
|
if (buff[i] == 's') {
|
|
buff[i] = '\0';
|
|
for (tp = UnitsTable; tp->name; tp++) {
|
|
if (strcmp(buff, tp->name) == 0) {
|
|
yylval.Number = tp->value;
|
|
return tp->type;
|
|
}
|
|
}
|
|
}
|
|
|
|
for (tp = OtherTable; tp->name; tp++) {
|
|
if (strcmp(buff, tp->name) == 0) {
|
|
yylval.Number = tp->value;
|
|
return tp->type;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Military timezones.
|
|
*/
|
|
if (buff[1] == '\0' && isalpha(*buff)) {
|
|
for (tp = MilitaryTable; tp->name; tp++) {
|
|
if (strcmp(buff, tp->name) == 0) {
|
|
yylval.Number = tp->value;
|
|
return tp->type;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Drop out any periods and try the timezone table again.
|
|
*/
|
|
for (i = 0, p = q = buff; *q; q++)
|
|
if (*q != '.')
|
|
*p++ = *q;
|
|
else
|
|
i++;
|
|
*p = '\0';
|
|
if (i)
|
|
for (tp = TimezoneTable; tp->name; tp++) {
|
|
if (strcmp(buff, tp->name) == 0) {
|
|
yylval.Number = tp->value;
|
|
return tp->type;
|
|
}
|
|
}
|
|
|
|
return tID;
|
|
}
|
|
|
|
|
|
static int
|
|
yylex()
|
|
{
|
|
register char c;
|
|
register char *p;
|
|
char buff[20];
|
|
int Count;
|
|
int sign;
|
|
|
|
for ( ; ; ) {
|
|
while (isspace((unsigned char) (*yyInput))) {
|
|
yyInput++;
|
|
}
|
|
|
|
if (isdigit(c = *yyInput) || c == '-' || c == '+') {
|
|
if (c == '-' || c == '+') {
|
|
sign = c == '-' ? -1 : 1;
|
|
if (!isdigit(*++yyInput)) {
|
|
/*
|
|
* skip the '-' sign
|
|
*/
|
|
continue;
|
|
}
|
|
} else {
|
|
sign = 0;
|
|
}
|
|
for (yylval.Number = 0; isdigit(c = *yyInput++); ) {
|
|
yylval.Number = 10 * yylval.Number + c - '0';
|
|
}
|
|
yyInput--;
|
|
if (sign < 0) {
|
|
yylval.Number = -yylval.Number;
|
|
}
|
|
return sign ? tSNUMBER : tUNUMBER;
|
|
}
|
|
if (isalpha(c)) {
|
|
for (p = buff; isalpha(c = *yyInput++) || c == '.'; ) {
|
|
if (p < &buff[sizeof buff - 1]) {
|
|
*p++ = c;
|
|
}
|
|
}
|
|
*p = '\0';
|
|
yyInput--;
|
|
return LookupWord(buff);
|
|
}
|
|
if (c != '(') {
|
|
return *yyInput++;
|
|
}
|
|
Count = 0;
|
|
do {
|
|
c = *yyInput++;
|
|
if (c == '\0') {
|
|
return c;
|
|
} else if (c == '(') {
|
|
Count++;
|
|
} else if (c == ')') {
|
|
Count--;
|
|
}
|
|
} while (Count > 0);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Specify zone is of -50000 to force GMT. (This allows BST to work).
|
|
*/
|
|
|
|
int
|
|
TclGetDate(p, now, zone, timePtr)
|
|
char *p;
|
|
unsigned long now;
|
|
long zone;
|
|
unsigned long *timePtr;
|
|
{
|
|
struct tm *tm;
|
|
time_t Start;
|
|
time_t Time;
|
|
time_t tod;
|
|
|
|
yyInput = p;
|
|
tm = TclpGetDate((time_t *) &now, 0);
|
|
yyYear = tm->tm_year;
|
|
yyMonth = tm->tm_mon + 1;
|
|
yyDay = tm->tm_mday;
|
|
yyTimezone = zone;
|
|
if (zone == -50000) {
|
|
yyDSTmode = DSToff; /* assume GMT */
|
|
yyTimezone = 0;
|
|
} else {
|
|
yyDSTmode = DSTmaybe;
|
|
}
|
|
yyHour = 0;
|
|
yyMinutes = 0;
|
|
yySeconds = 0;
|
|
yyMeridian = MER24;
|
|
yyRelSeconds = 0;
|
|
yyRelMonth = 0;
|
|
yyHaveDate = 0;
|
|
yyHaveDay = 0;
|
|
yyHaveRel = 0;
|
|
yyHaveTime = 0;
|
|
yyHaveZone = 0;
|
|
|
|
if (yyparse() || yyHaveTime > 1 || yyHaveZone > 1 || yyHaveDate > 1 ||
|
|
yyHaveDay > 1) {
|
|
return -1;
|
|
}
|
|
|
|
if (yyHaveDate || yyHaveTime || yyHaveDay) {
|
|
if (Convert(yyMonth, yyDay, yyYear, yyHour, yyMinutes, yySeconds,
|
|
yyMeridian, yyDSTmode, &Start) < 0)
|
|
return -1;
|
|
}
|
|
else {
|
|
Start = now;
|
|
if (!yyHaveRel)
|
|
Start -= ((tm->tm_hour * 60L) + tm->tm_min * 60L) + tm->tm_sec;
|
|
}
|
|
|
|
Start += yyRelSeconds;
|
|
if (RelativeMonth(Start, yyRelMonth, &Time) < 0) {
|
|
return -1;
|
|
}
|
|
Start += Time;
|
|
|
|
if (yyHaveDay && !yyHaveDate) {
|
|
tod = RelativeDate(Start, yyDayOrdinal, yyDayNumber);
|
|
Start += tod;
|
|
}
|
|
|
|
*timePtr = Start;
|
|
return 0;
|
|
}
|