+++ /dev/null
-#ifndef lint
-static char yysccsid[] = "@(#)yaccpar 1.9 (Berkeley) 02/21/93";
-#endif
-#define YYBYACC 1
-#define YYMAJOR 1
-#define YYMINOR 9
-#define yyclearin (yychar=(-1))
-#define yyerrok (yyerrflag=0)
-#define YYRECOVERING (yyerrflag!=0)
-#define YYPREFIX "yy"
-#line 2 "parsedate.y"
-/* $Revision$
-**
-** Originally written by Steven M. Bellovin <smb@research.att.com> while
-** at the University of North Carolina at Chapel Hill. Later tweaked by
-** a couple of people on Usenet. Completely overhauled by Rich $alz
-** <rsalz@osf.org> and Jim Berets <jberets@bbn.com> in August, 1990.
-** Further revised (removed obsolete constructs and cleaned up timezone
-** names) in August, 1991, by Rich. Paul Eggert <eggert@twinsun.com>
-** helped in September, 1992. Art Cancro <ajc@uncnsrd.mt-kisco.ny.us> cleaned
-** it up for ANSI C in December, 1999.
-**
-** This grammar has six shift/reduce conflicts.
-**
-** This code is in the public domain and has no copyright.
-*/
-/* SUPPRESS 530 *//* Empty body for statement */
-/* SUPPRESS 593 on yyerrlab *//* Label was not used */
-/* SUPPRESS 593 on yynewstate *//* Label was not used */
-/* SUPPRESS 595 on yypvt *//* Automatic variable may be used before set */
-#include <stdio.h>
-#include <sys/types.h>
-#include <ctype.h>
-#include <time.h>
-
-int date_lex(void);
-
-#define yyparse date_parse
-#define yylex date_lex
-#define yyerror date_error
-
-
- /* See the LeapYears table in Convert. */
-#define EPOCH 1970
-#define END_OF_TIME 2038
- /* Constants for general time calculations. */
-#define DST_OFFSET 1
-#define SECSPERDAY (24L * 60L * 60L)
- /* Readability for TABLE stuff. */
-#define HOUR(x) (x * 60)
-
-#define LPAREN '('
-#define RPAREN ')'
-#define IS7BIT(x) ((unsigned int)(x) < 0200)
-
-#define SIZEOF(array) ((int)(sizeof array / sizeof array[0]))
-#define ENDOF(array) (&array[SIZEOF(array)])
-
-
-/*
-** An entry in the lexical lookup table.
-*/
-typedef struct _TABLE {
- char *name;
- int type;
- time_t value;
-} TABLE;
-
-/*
-** Daylight-savings mode: on, off, or not yet known.
-*/
-typedef enum _DSTMODE {
- DSTon, DSToff, DSTmaybe
-} DSTMODE;
-
-/*
-** Meridian: am, pm, or 24-hour style.
-*/
-typedef enum _MERIDIAN {
- MERam, MERpm, MER24
-} MERIDIAN;
-
-
-/*
-** Global variables. We could get rid of most of them by using a yacc
-** union, but this is more efficient. (This routine predates the
-** yacc %union construct.)
-*/
-static char *yyInput;
-static DSTMODE yyDSTmode;
-static int yyHaveDate;
-static int yyHaveRel;
-static int yyHaveTime;
-static time_t yyTimezone;
-static time_t yyDay;
-static time_t yyHour;
-static time_t yyMinutes;
-static time_t yyMonth;
-static time_t yySeconds;
-static time_t yyYear;
-static MERIDIAN yyMeridian;
-static time_t yyRelMonth;
-static time_t yyRelSeconds;
-
-
-static void date_error(char *);
-#line 99 "parsedate.y"
-typedef union {
- time_t Number;
- enum _MERIDIAN Meridian;
-} YYSTYPE;
-#line 113 "y.tab.c"
-#define tDAY 257
-#define tDAYZONE 258
-#define tMERIDIAN 259
-#define tMONTH 260
-#define tMONTH_UNIT 261
-#define tSEC_UNIT 262
-#define tSNUMBER 263
-#define tUNUMBER 264
-#define tZONE 265
-#define YYERRCODE 256
-short yylhs[] = { -1,
- 0, 0, 4, 4, 4, 4, 5, 5, 5, 5,
- 5, 2, 2, 2, 2, 1, 6, 6, 6, 6,
- 6, 6, 6, 7, 7, 7, 7, 3, 3,
-};
-short yylen[] = { 2,
- 0, 2, 1, 2, 1, 1, 2, 4, 4, 6,
- 6, 1, 1, 2, 1, 1, 3, 5, 2, 4,
- 2, 3, 5, 2, 2, 2, 2, 0, 1,
-};
-short yydefred[] = { 1,
- 0, 0, 0, 0, 0, 2, 0, 5, 6, 0,
- 0, 26, 24, 29, 0, 27, 25, 0, 0, 7,
- 13, 16, 0, 15, 4, 0, 0, 22, 0, 0,
- 14, 0, 20, 0, 9, 8, 0, 23, 0, 18,
- 11, 10,
-};
-short yydgoto[] = { 1,
- 24, 25, 20, 6, 7, 8, 9,
-};
-short yysindex[] = { 0,
- -239, -36, -248, -255, -47, 0, -232, 0, 0, -247,
- -25, 0, 0, 0, -237, 0, 0, -235, -234, 0,
- 0, 0, -231, 0, 0, -226, -229, 0, -56, -11,
- 0, -227, 0, -225, 0, 0, -224, 0, -250, 0,
- 0, 0,
-};
-short yyrindex[] = { 0,
- 0, 0, 0, 0, 1, 0, 22, 0, 0, 0,
- 12, 0, 0, 0, 28, 0, 0, 0, 0, 0,
- 0, 0, 23, 0, 0, 0, 0, 0, 3, 14,
- 0, 0, 0, 0, 0, 0, 0, 0, 3, 0,
- 0, 0,
-};
-short yygindex[] = { 0,
- -19, 0, -24, 0, 0, 0, 0,
-};
-#define YYTABLESIZE 291
-short yytable[] = { 19,
- 28, 34, 28, 31, 36, 12, 13, 10, 14, 35,
- 18, 19, 22, 17, 42, 11, 26, 2, 27, 41,
- 3, 3, 12, 4, 5, 21, 28, 21, 29, 30,
- 22, 22, 23, 32, 33, 37, 38, 0, 39, 40,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 14, 0, 0, 0, 22, 0, 0, 0,
- 0, 14, 15, 16, 17, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 28, 28, 28,
- 28, 0, 28, 28, 28, 28, 28, 28, 19, 0,
- 17, 19, 0, 17, 19, 19, 17, 17, 3, 12,
- 0, 3, 12, 0, 21, 3, 12, 21, 0, 0,
- 21,
-};
-short yycheck[] = { 47,
- 0, 58, 0, 23, 29, 261, 262, 44, 259, 29,
- 58, 0, 263, 0, 39, 264, 264, 257, 44, 39,
- 260, 0, 0, 263, 264, 258, 264, 0, 264, 264,
- 263, 263, 265, 260, 264, 47, 264, -1, 264, 264,
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
- -1, -1, 259, -1, -1, -1, 263, -1, -1, -1,
- -1, 259, 260, 261, 262, -1, -1, -1, -1, -1,
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
- -1, -1, -1, -1, -1, -1, -1, 257, 258, 257,
- 258, -1, 260, 263, 264, 265, 264, 265, 257, -1,
- 257, 260, -1, 260, 263, 264, 263, 264, 257, 257,
- -1, 260, 260, -1, 257, 264, 264, 260, -1, -1,
- 263,
-};
-#define YYFINAL 1
-#ifndef YYDEBUG
-#define YYDEBUG 0
-#endif
-#define YYMAXTOKEN 265
-#if YYDEBUG
-char *yyname[] = {
-"end-of-file",0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
-0,0,0,0,0,0,0,0,0,0,"','",0,0,"'/'",0,0,0,0,0,0,0,0,0,0,"':'",0,0,0,0,0,0,0,0,0,
-0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
-0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
-0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
-0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
-0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,"tDAY","tDAYZONE",
-"tMERIDIAN","tMONTH","tMONTH_UNIT","tSEC_UNIT","tSNUMBER","tUNUMBER","tZONE",
-};
-char *yyrule[] = {
-"$accept : spec",
-"spec :",
-"spec : spec item",
-"item : time",
-"item : time zone",
-"item : date",
-"item : rel",
-"time : tUNUMBER o_merid",
-"time : tUNUMBER ':' tUNUMBER o_merid",
-"time : tUNUMBER ':' tUNUMBER numzone",
-"time : tUNUMBER ':' tUNUMBER ':' tUNUMBER o_merid",
-"time : tUNUMBER ':' tUNUMBER ':' tUNUMBER numzone",
-"zone : tZONE",
-"zone : tDAYZONE",
-"zone : tZONE numzone",
-"zone : numzone",
-"numzone : tSNUMBER",
-"date : tUNUMBER '/' tUNUMBER",
-"date : tUNUMBER '/' tUNUMBER '/' tUNUMBER",
-"date : tMONTH tUNUMBER",
-"date : tMONTH tUNUMBER ',' tUNUMBER",
-"date : tUNUMBER tMONTH",
-"date : tUNUMBER tMONTH tUNUMBER",
-"date : tDAY ',' tUNUMBER tMONTH tUNUMBER",
-"rel : tSNUMBER tSEC_UNIT",
-"rel : tUNUMBER tSEC_UNIT",
-"rel : tSNUMBER tMONTH_UNIT",
-"rel : tUNUMBER tMONTH_UNIT",
-"o_merid :",
-"o_merid : tMERIDIAN",
-};
-#endif
-#ifdef YYSTACKSIZE
-#undef YYMAXDEPTH
-#define YYMAXDEPTH YYSTACKSIZE
-#else
-#ifdef YYMAXDEPTH
-#define YYSTACKSIZE YYMAXDEPTH
-#else
-#define YYSTACKSIZE 500
-#define YYMAXDEPTH 500
-#endif
-#endif
-int yydebug;
-int yynerrs;
-int yyerrflag;
-int yychar;
-short *yyssp;
-YYSTYPE *yyvsp;
-YYSTYPE yyval;
-YYSTYPE yylval;
-short yyss[YYSTACKSIZE];
-YYSTYPE yyvs[YYSTACKSIZE];
-#define yystacksize YYSTACKSIZE
-#line 286 "parsedate.y"
-
-/* Month and day table. */
-static TABLE MonthDayTable[] = {
- { "january", tMONTH, 1 },
- { "february", tMONTH, 2 },
- { "march", tMONTH, 3 },
- { "april", tMONTH, 4 },
- { "may", tMONTH, 5 },
- { "june", tMONTH, 6 },
- { "july", tMONTH, 7 },
- { "august", tMONTH, 8 },
- { "september", tMONTH, 9 },
- { "october", tMONTH, 10 },
- { "november", tMONTH, 11 },
- { "december", tMONTH, 12 },
- /* The value of the day isn't used... */
- { "sunday", tDAY, 0 },
- { "monday", tDAY, 0 },
- { "tuesday", tDAY, 0 },
- { "wednesday", tDAY, 0 },
- { "thursday", tDAY, 0 },
- { "friday", tDAY, 0 },
- { "saturday", tDAY, 0 },
-};
-
-/* Time units table. */
-static TABLE UnitsTable[] = {
- { "year", tMONTH_UNIT, 12 },
- { "month", tMONTH_UNIT, 1 },
- { "week", tSEC_UNIT, 7L * 24 * 60 * 60 },
- { "day", tSEC_UNIT, 1L * 24 * 60 * 60 },
- { "hour", tSEC_UNIT, 60 * 60 },
- { "minute", tSEC_UNIT, 60 },
- { "min", tSEC_UNIT, 60 },
- { "second", tSEC_UNIT, 1 },
- { "sec", tSEC_UNIT, 1 },
-};
-
-/* Timezone table. */
-static TABLE TimezoneTable[] = {
- { "gmt", tZONE, HOUR( 0) }, /* Greenwich Mean */
- { "ut", tZONE, HOUR( 0) }, /* Universal */
- { "utc", tZONE, HOUR( 0) }, /* Universal Coordinated */
- { "cut", tZONE, HOUR( 0) }, /* Coordinated Universal */
- { "z", tZONE, HOUR( 0) }, /* Greenwich Mean */
- { "wet", tZONE, HOUR( 0) }, /* Western European */
- { "bst", tDAYZONE, HOUR( 0) }, /* British Summer */
- { "nst", tZONE, HOUR(3)+30 }, /* Newfoundland Standard */
- { "ndt", tDAYZONE, HOUR(3)+30 }, /* Newfoundland Daylight */
- { "ast", tZONE, HOUR( 4) }, /* Atlantic Standard */
- { "adt", tDAYZONE, HOUR( 4) }, /* Atlantic Daylight */
- { "est", tZONE, HOUR( 5) }, /* Eastern Standard */
- { "edt", tDAYZONE, HOUR( 5) }, /* Eastern Daylight */
- { "cst", tZONE, HOUR( 6) }, /* Central Standard */
- { "cdt", tDAYZONE, HOUR( 6) }, /* Central Daylight */
- { "mst", tZONE, HOUR( 7) }, /* Mountain Standard */
- { "mdt", tDAYZONE, HOUR( 7) }, /* Mountain Daylight */
- { "pst", tZONE, HOUR( 8) }, /* Pacific Standard */
- { "pdt", tDAYZONE, HOUR( 8) }, /* Pacific Daylight */
- { "yst", tZONE, HOUR( 9) }, /* Yukon Standard */
- { "ydt", tDAYZONE, HOUR( 9) }, /* Yukon Daylight */
- { "akst", tZONE, HOUR( 9) }, /* Alaska Standard */
- { "akdt", tDAYZONE, HOUR( 9) }, /* Alaska Daylight */
- { "hst", tZONE, HOUR(10) }, /* Hawaii Standard */
- { "hast", tZONE, HOUR(10) }, /* Hawaii-Aleutian Standard */
- { "hadt", tDAYZONE, HOUR(10) }, /* Hawaii-Aleutian Daylight */
- { "ces", tDAYZONE, -HOUR(1) }, /* Central European Summer */
- { "cest", tDAYZONE, -HOUR(1) }, /* Central European Summer */
- { "mez", tZONE, -HOUR(1) }, /* Middle European */
- { "mezt", tDAYZONE, -HOUR(1) }, /* Middle European Summer */
- { "cet", tZONE, -HOUR(1) }, /* Central European */
- { "met", tZONE, -HOUR(1) }, /* Middle European */
- { "eet", tZONE, -HOUR(2) }, /* Eastern Europe */
- { "msk", tZONE, -HOUR(3) }, /* Moscow Winter */
- { "msd", tDAYZONE, -HOUR(3) }, /* Moscow Summer */
- { "wast", tZONE, -HOUR(8) }, /* West Australian Standard */
- { "wadt", tDAYZONE, -HOUR(8) }, /* West Australian Daylight */
- { "hkt", tZONE, -HOUR(8) }, /* Hong Kong */
- { "cct", tZONE, -HOUR(8) }, /* China Coast */
- { "jst", tZONE, -HOUR(9) }, /* Japan Standard */
- { "kst", tZONE, -HOUR(9) }, /* Korean Standard */
- { "kdt", tZONE, -HOUR(9) }, /* Korean Daylight */
- { "cast", tZONE, -(HOUR(9)+30) }, /* Central Australian Standard */
- { "cadt", tDAYZONE, -(HOUR(9)+30) }, /* Central Australian Daylight */
- { "east", tZONE, -HOUR(10) }, /* Eastern Australian Standard */
- { "eadt", tDAYZONE, -HOUR(10) }, /* Eastern Australian Daylight */
- { "nzst", tZONE, -HOUR(12) }, /* New Zealand Standard */
- { "nzdt", tDAYZONE, -HOUR(12) }, /* New Zealand Daylight */
-
- /* For completeness we include the following entries. */
-#if 0
-
- /* Duplicate names. Either they conflict with a zone listed above
- * (which is either more likely to be seen or just been in circulation
- * longer), or they conflict with another zone in this section and
- * we could not reasonably choose one over the other. */
- { "fst", tZONE, HOUR( 2) }, /* Fernando De Noronha Standard */
- { "fdt", tDAYZONE, HOUR( 2) }, /* Fernando De Noronha Daylight */
- { "bst", tZONE, HOUR( 3) }, /* Brazil Standard */
- { "est", tZONE, HOUR( 3) }, /* Eastern Standard (Brazil) */
- { "edt", tDAYZONE, HOUR( 3) }, /* Eastern Daylight (Brazil) */
- { "wst", tZONE, HOUR( 4) }, /* Western Standard (Brazil) */
- { "wdt", tDAYZONE, HOUR( 4) }, /* Western Daylight (Brazil) */
- { "cst", tZONE, HOUR( 5) }, /* Chile Standard */
- { "cdt", tDAYZONE, HOUR( 5) }, /* Chile Daylight */
- { "ast", tZONE, HOUR( 5) }, /* Acre Standard */
- { "adt", tDAYZONE, HOUR( 5) }, /* Acre Daylight */
- { "cst", tZONE, HOUR( 5) }, /* Cuba Standard */
- { "cdt", tDAYZONE, HOUR( 5) }, /* Cuba Daylight */
- { "est", tZONE, HOUR( 6) }, /* Easter Island Standard */
- { "edt", tDAYZONE, HOUR( 6) }, /* Easter Island Daylight */
- { "sst", tZONE, HOUR(11) }, /* Samoa Standard */
- { "ist", tZONE, -HOUR(2) }, /* Israel Standard */
- { "idt", tDAYZONE, -HOUR(2) }, /* Israel Daylight */
- { "idt", tDAYZONE, -(HOUR(3)+30) }, /* Iran Daylight */
- { "ist", tZONE, -(HOUR(3)+30) }, /* Iran Standard */
- { "cst", tZONE, -HOUR(8) }, /* China Standard */
- { "cdt", tDAYZONE, -HOUR(8) }, /* China Daylight */
- { "sst", tZONE, -HOUR(8) }, /* Singapore Standard */
-
- /* Dubious (e.g., not in Olson's TIMEZONE package) or obsolete. */
- { "gst", tZONE, HOUR( 3) }, /* Greenland Standard */
- { "wat", tZONE, -HOUR(1) }, /* West Africa */
- { "at", tZONE, HOUR( 2) }, /* Azores */
- { "gst", tZONE, -HOUR(10) }, /* Guam Standard */
- { "nft", tZONE, HOUR(3)+30 }, /* Newfoundland */
- { "idlw", tZONE, HOUR(12) }, /* International Date Line West */
- { "mewt", tZONE, -HOUR(1) }, /* Middle European Winter */
- { "mest", tDAYZONE, -HOUR(1) }, /* Middle European Summer */
- { "swt", tZONE, -HOUR(1) }, /* Swedish Winter */
- { "sst", tDAYZONE, -HOUR(1) }, /* Swedish Summer */
- { "fwt", tZONE, -HOUR(1) }, /* French Winter */
- { "fst", tDAYZONE, -HOUR(1) }, /* French Summer */
- { "bt", tZONE, -HOUR(3) }, /* Baghdad */
- { "it", tZONE, -(HOUR(3)+30) }, /* Iran */
- { "zp4", tZONE, -HOUR(4) }, /* USSR Zone 3 */
- { "zp5", tZONE, -HOUR(5) }, /* USSR Zone 4 */
- { "ist", tZONE, -(HOUR(5)+30) }, /* Indian Standard */
- { "zp6", tZONE, -HOUR(6) }, /* USSR Zone 5 */
- { "nst", tZONE, -HOUR(7) }, /* North Sumatra */
- { "sst", tZONE, -HOUR(7) }, /* South Sumatra */
- { "jt", tZONE, -(HOUR(7)+30) }, /* Java (3pm in Cronusland!) */
- { "nzt", tZONE, -HOUR(12) }, /* New Zealand */
- { "idle", tZONE, -HOUR(12) }, /* International Date Line East */
- { "cat", tZONE, HOUR(10) }, /* -- expired 1967 */
- { "nt", tZONE, HOUR(11) }, /* -- expired 1967 */
- { "ahst", tZONE, HOUR(10) }, /* -- expired 1983 */
- { "hdt", tDAYZONE, HOUR(10) }, /* -- expired 1986 */
-#endif /* 0 */
-};
-
-
-/* ARGSUSED */
-static void
-date_error(s)
- char *s;
-{
- /* NOTREACHED */
-}
-
-
-static time_t
-ToSeconds(time_t Hours, time_t Minutes, time_t Seconds, MERIDIAN Meridian)
-{
- if (Minutes < 0 || Minutes > 59 || Seconds < 0 || Seconds > 61)
- return -1;
- if (Meridian == MER24) {
- if (Hours < 0 || Hours > 23)
- return -1;
- }
- else {
- if (Hours < 1 || Hours > 12)
- return -1;
- if (Hours == 12)
- Hours = 0;
- if (Meridian == MERpm)
- Hours += 12;
- }
- return (Hours * 60L + Minutes) * 60L + Seconds;
-}
-
-
-static time_t
-Convert(time_t Month, time_t Day, time_t Year,
- time_t Hours, time_t Minutes, time_t Seconds,
- MERIDIAN Meridian, DSTMODE dst)
-{
- static int DaysNormal[13] = {
- 0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31
- };
- static int DaysLeap[13] = {
- 0, 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31
- };
- static int LeapYears[] = {
- 1972, 1976, 1980, 1984, 1988, 1992, 1996,
- 2000, 2004, 2008, 2012, 2016, 2020, 2024, 2028, 2032, 2036
- };
- register int *yp;
- register int *mp;
- register time_t Julian;
- register int i;
- time_t tod;
-
- if (Year < 0)
- Year = -Year;
- if (Year < 100)
- Year += 1900;
- if (Year < EPOCH)
- Year += 100;
- for (mp = DaysNormal, yp = LeapYears; yp < ENDOF(LeapYears); yp++)
- if (Year == *yp) {
- mp = DaysLeap;
- break;
- }
- if (Year < EPOCH || Year > END_OF_TIME
- || Month < 1 || Month > 12
- /* NOSTRICT *//* conversion from long may lose accuracy */
- || Day < 1 || Day > mp[(int)Month])
- return -1;
-
- Julian = Day - 1 + (Year - EPOCH) * 365;
- for (yp = LeapYears; yp < ENDOF(LeapYears); yp++, Julian++)
- if (Year <= *yp)
- break;
- for (i = 1; i < Month; i++)
- Julian += *++mp;
- Julian *= SECSPERDAY;
- Julian += yyTimezone * 60L;
- if ((tod = ToSeconds(Hours, Minutes, Seconds, Meridian)) < 0)
- return -1;
- Julian += tod;
- tod = Julian;
- if (dst == DSTon || (dst == DSTmaybe && localtime(&tod)->tm_isdst))
- Julian -= DST_OFFSET * 60L * 60L;
- return Julian;
-}
-
-
-static time_t
-DSTcorrect(time_t Start, time_t Future)
-{
- time_t StartDay;
- time_t FutureDay;
-
- StartDay = (localtime(&Start)->tm_hour + 1) % 24;
- FutureDay = (localtime(&Future)->tm_hour + 1) % 24;
- return (Future - Start) + (StartDay - FutureDay) * DST_OFFSET * 60L * 60L;
-}
-
-
-static time_t
-RelativeMonth(time_t Start, time_t RelMonth)
-{
- struct tm *tm;
- time_t Month;
- time_t Year;
-
- tm = localtime(&Start);
- Month = 12 * tm->tm_year + tm->tm_mon + RelMonth;
- Year = Month / 12;
- Month = Month % 12 + 1;
- return DSTcorrect(Start,
- 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));
-}
-
-
-static int
-LookupWord(char *buff, register int length)
-{
- register char *p;
- register char *q;
- register TABLE *tp;
- register int c;
-
- p = buff;
- c = p[0];
-
- /* See if we have an abbreviation for a month. */
- if (length == 3 || (length == 4 && p[3] == '.'))
- for (tp = MonthDayTable; tp < ENDOF(MonthDayTable); tp++) {
- q = tp->name;
- if (c == q[0] && p[1] == q[1] && p[2] == q[2]) {
- yylval.Number = tp->value;
- return tp->type;
- }
- }
- else
- for (tp = MonthDayTable; tp < ENDOF(MonthDayTable); tp++)
- if (c == tp->name[0] && strcmp(p, tp->name) == 0) {
- yylval.Number = tp->value;
- return tp->type;
- }
-
- /* Try for a timezone. */
- for (tp = TimezoneTable; tp < ENDOF(TimezoneTable); tp++)
- if (c == tp->name[0] && p[1] == tp->name[1]
- && strcmp(p, tp->name) == 0) {
- yylval.Number = tp->value;
- return tp->type;
- }
-
- /* Try the units table. */
- for (tp = UnitsTable; tp < ENDOF(UnitsTable); tp++)
- if (c == tp->name[0] && strcmp(p, tp->name) == 0) {
- yylval.Number = tp->value;
- return tp->type;
- }
-
- /* Strip off any plural and try the units table again. */
- if (--length > 0 && p[length] == 's') {
- p[length] = '\0';
- for (tp = UnitsTable; tp < ENDOF(UnitsTable); tp++)
- if (c == tp->name[0] && strcmp(p, tp->name) == 0) {
- p[length] = 's';
- yylval.Number = tp->value;
- return tp->type;
- }
- p[length] = 's';
- }
- length++;
-
- /* Drop out any periods. */
- for (p = buff, q = (char*)buff; *q; q++)
- if (*q != '.')
- *p++ = *q;
- *p = '\0';
-
- /* Try the meridians. */
- if (buff[1] == 'm' && buff[2] == '\0') {
- if (buff[0] == 'a') {
- yylval.Meridian = MERam;
- return tMERIDIAN;
- }
- if (buff[0] == 'p') {
- yylval.Meridian = MERpm;
- return tMERIDIAN;
- }
- }
-
- /* If we saw any periods, try the timezones again. */
- if (p - buff != length) {
- c = buff[0];
- for (p = buff, tp = TimezoneTable; tp < ENDOF(TimezoneTable); tp++)
- if (c == tp->name[0] && p[1] == tp->name[1]
- && strcmp(p, tp->name) == 0) {
- yylval.Number = tp->value;
- return tp->type;
- }
- }
-
- /* Unknown word -- assume GMT timezone. */
- yylval.Number = 0;
- return tZONE;
-}
-
-
-int
-date_lex(void)
-{
- register char c;
- register char *p;
- char buff[20];
- register int sign;
- register int i;
- register int nesting;
-
- for ( ; ; ) {
- /* Get first character after the whitespace. */
- for ( ; ; ) {
- while (isspace(*yyInput))
- yyInput++;
- c = *yyInput;
-
- /* Ignore RFC 822 comments, typically time zone names. */
- if (c != LPAREN)
- break;
- for (nesting = 1; (c = *++yyInput) != RPAREN || --nesting; )
- if (c == LPAREN)
- nesting++;
- else if (!IS7BIT(c) || c == '\0' || c == '\r'
- || (c == '\\' && ((c = *++yyInput) == '\0' || !IS7BIT(c))))
- /* Lexical error: bad comment. */
- return '?';
- yyInput++;
- }
-
- /* A number? */
- if (isdigit(c) || c == '-' || c == '+') {
- if (c == '-' || c == '+') {
- sign = c == '-' ? -1 : 1;
- yyInput++;
- if (!isdigit(*yyInput))
- /* Skip the plus or minus sign. */
- continue;
- }
- else
- sign = 0;
- for (i = 0; (c = *yyInput++) != '\0' && isdigit(c); )
- i = 10 * i + c - '0';
- yyInput--;
- yylval.Number = sign < 0 ? -i : i;
- return sign ? tSNUMBER : tUNUMBER;
- }
-
- /* A word? */
- if (isalpha(c)) {
- for (p = buff; (c = *yyInput++) == '.' || isalpha(c); )
- if (p < &buff[sizeof buff - 1])
- *p++ = isupper(c) ? tolower(c) : c;
- *p = '\0';
- yyInput--;
- return LookupWord(buff, p - buff);
- }
-
- return *yyInput++;
- }
-}
-
-
-time_t
-parsedate(char *p)
-{
- extern int date_parse(void);
- time_t Start;
-
- yyInput = p;
-
- yyYear = 0;
- yyMonth = 0;
- yyDay = 0;
- yyTimezone = 0;
- yyDSTmode = DSTmaybe;
- yyHour = 0;
- yyMinutes = 0;
- yySeconds = 0;
- yyMeridian = MER24;
- yyRelSeconds = 0;
- yyRelMonth = 0;
- yyHaveDate = 0;
- yyHaveRel = 0;
- yyHaveTime = 0;
-
- if (date_parse() || yyHaveTime > 1 || yyHaveDate > 1)
- return -1;
-
- if (yyHaveDate || yyHaveTime) {
- Start = Convert(yyMonth, yyDay, yyYear, yyHour, yyMinutes, yySeconds,
- yyMeridian, yyDSTmode);
- if (Start < 0)
- return -1;
- }
- else
- return -1;
-
- Start += yyRelSeconds;
- if (yyRelMonth)
- Start += RelativeMonth(Start, yyRelMonth);
-
- /* Have to do *something* with a legitimate -1 so it's distinguishable
- * from the error return value. (Alternately could set errno on error.) */
- return Start == -1 ? 0 : Start;
-}
-
-
-#ifdef TEST
-
-#if YYDEBUG
-extern int yydebug;
-#endif /* YYDEBUG */
-
-/* ARGSUSED */
-int
-main(int ac, char *av[])
-{
- char buff[128];
- time_t d;
-
-#if YYDEBUG
- yydebug = 1;
-#endif /* YYDEBUG */
-
- (void)printf("Enter date, or blank line to exit.\n\t> ");
- for ( ; ; ) {
- (void)printf("\t> ");
- (void)fflush(stdout);
- if (gets(buff) == NULL || buff[0] == '\n')
- break;
-#if YYDEBUG
- if (strcmp(buff, "yydebug") == 0) {
- yydebug = !yydebug;
- printf("yydebug = %s\n", yydebug ? "on" : "off");
- continue;
- }
-#endif /* YYDEBUG */
- d = parsedate(buff, (TIMEINFO *)NULL);
- if (d == -1)
- (void)printf("Bad format - couldn't convert.\n");
- else
- (void)printf("%s", ctime(&d));
- }
-
- exit(0);
- /* NOTREACHED */
-}
-#endif /* TEST */
-#line 805 "y.tab.c"
-#define YYABORT goto yyabort
-#define YYREJECT goto yyabort
-#define YYACCEPT goto yyaccept
-#define YYERROR goto yyerrlab
-int
-yyparse()
-{
- register int yym, yyn, yystate;
-#if YYDEBUG
- register char *yys;
- extern char *getenv();
-
- if (yys = getenv("YYDEBUG"))
- {
- yyn = *yys;
- if (yyn >= '0' && yyn <= '9')
- yydebug = yyn - '0';
- }
-#endif
-
- yynerrs = 0;
- yyerrflag = 0;
- yychar = (-1);
-
- yyssp = yyss;
- yyvsp = yyvs;
- *yyssp = yystate = 0;
-
-yyloop:
- if (yyn = yydefred[yystate]) goto yyreduce;
- if (yychar < 0)
- {
- if ((yychar = yylex()) < 0) yychar = 0;
-#if YYDEBUG
- if (yydebug)
- {
- yys = 0;
- if (yychar <= YYMAXTOKEN) yys = yyname[yychar];
- if (!yys) yys = "illegal-symbol";
- printf("%sdebug: state %d, reading %d (%s)\n",
- YYPREFIX, yystate, yychar, yys);
- }
-#endif
- }
- if ((yyn = yysindex[yystate]) && (yyn += yychar) >= 0 &&
- yyn <= YYTABLESIZE && yycheck[yyn] == yychar)
- {
-#if YYDEBUG
- if (yydebug)
- printf("%sdebug: state %d, shifting to state %d\n",
- YYPREFIX, yystate, yytable[yyn]);
-#endif
- if (yyssp >= yyss + yystacksize - 1)
- {
- goto yyoverflow;
- }
- *++yyssp = yystate = yytable[yyn];
- *++yyvsp = yylval;
- yychar = (-1);
- if (yyerrflag > 0) --yyerrflag;
- goto yyloop;
- }
- if ((yyn = yyrindex[yystate]) && (yyn += yychar) >= 0 &&
- yyn <= YYTABLESIZE && yycheck[yyn] == yychar)
- {
- yyn = yytable[yyn];
- goto yyreduce;
- }
- if (yyerrflag) goto yyinrecovery;
-#ifdef lint
- goto yynewerror;
-#endif
-yynewerror:
- yyerror("syntax error");
-#ifdef lint
- goto yyerrlab;
-#endif
-yyerrlab:
- ++yynerrs;
-yyinrecovery:
- if (yyerrflag < 3)
- {
- yyerrflag = 3;
- for (;;)
- {
- if ((yyn = yysindex[*yyssp]) && (yyn += YYERRCODE) >= 0 &&
- yyn <= YYTABLESIZE && yycheck[yyn] == YYERRCODE)
- {
-#if YYDEBUG
- if (yydebug)
- printf("%sdebug: state %d, error recovery shifting\
- to state %d\n", YYPREFIX, *yyssp, yytable[yyn]);
-#endif
- if (yyssp >= yyss + yystacksize - 1)
- {
- goto yyoverflow;
- }
- *++yyssp = yystate = yytable[yyn];
- *++yyvsp = yylval;
- goto yyloop;
- }
- else
- {
-#if YYDEBUG
- if (yydebug)
- printf("%sdebug: error recovery discarding state %d\n",
- YYPREFIX, *yyssp);
-#endif
- if (yyssp <= yyss) goto yyabort;
- --yyssp;
- --yyvsp;
- }
- }
- }
- else
- {
- if (yychar == 0) goto yyabort;
-#if YYDEBUG
- if (yydebug)
- {
- yys = 0;
- if (yychar <= YYMAXTOKEN) yys = yyname[yychar];
- if (!yys) yys = "illegal-symbol";
- printf("%sdebug: state %d, error recovery discards token %d (%s)\n",
- YYPREFIX, yystate, yychar, yys);
- }
-#endif
- yychar = (-1);
- goto yyloop;
- }
-yyreduce:
-#if YYDEBUG
- if (yydebug)
- printf("%sdebug: state %d, reducing by rule %d (%s)\n",
- YYPREFIX, yystate, yyn, yyrule[yyn]);
-#endif
- yym = yylen[yyn];
- yyval = yyvsp[1-yym];
- switch (yyn)
- {
-case 3:
-#line 117 "parsedate.y"
-{
- yyHaveTime++;
-#ifdef lint
- /* I am compulsive about lint natterings... */
- if (yyHaveTime == -1) {
- YYERROR;
- }
-#endif /* lint */
- }
-break;
-case 4:
-#line 126 "parsedate.y"
-{
- yyHaveTime++;
- yyTimezone = yyvsp[0].Number;
- }
-break;
-case 5:
-#line 130 "parsedate.y"
-{
- yyHaveDate++;
- }
-break;
-case 6:
-#line 133 "parsedate.y"
-{
- yyHaveRel = 1;
- }
-break;
-case 7:
-#line 138 "parsedate.y"
-{
- if (yyvsp[-1].Number < 100) {
- yyHour = yyvsp[-1].Number;
- yyMinutes = 0;
- }
- else {
- yyHour = yyvsp[-1].Number / 100;
- yyMinutes = yyvsp[-1].Number % 100;
- }
- yySeconds = 0;
- yyMeridian = yyvsp[0].Meridian;
- }
-break;
-case 8:
-#line 150 "parsedate.y"
-{
- yyHour = yyvsp[-3].Number;
- yyMinutes = yyvsp[-1].Number;
- yySeconds = 0;
- yyMeridian = yyvsp[0].Meridian;
- }
-break;
-case 9:
-#line 156 "parsedate.y"
-{
- yyHour = yyvsp[-3].Number;
- yyMinutes = yyvsp[-1].Number;
- yyTimezone = yyvsp[0].Number;
- yyMeridian = MER24;
- yyDSTmode = DSToff;
- }
-break;
-case 10:
-#line 163 "parsedate.y"
-{
- yyHour = yyvsp[-5].Number;
- yyMinutes = yyvsp[-3].Number;
- yySeconds = yyvsp[-1].Number;
- yyMeridian = yyvsp[0].Meridian;
- }
-break;
-case 11:
-#line 169 "parsedate.y"
-{
- yyHour = yyvsp[-5].Number;
- yyMinutes = yyvsp[-3].Number;
- yySeconds = yyvsp[-1].Number;
- yyTimezone = yyvsp[0].Number;
- yyMeridian = MER24;
- yyDSTmode = DSToff;
- }
-break;
-case 12:
-#line 179 "parsedate.y"
-{
- yyval.Number = yyvsp[0].Number;
- yyDSTmode = DSToff;
- }
-break;
-case 13:
-#line 183 "parsedate.y"
-{
- yyval.Number = yyvsp[0].Number;
- yyDSTmode = DSTon;
- }
-break;
-case 14:
-#line 187 "parsedate.y"
-{
- /* Only allow "GMT+300" and "GMT-0800" */
- if (yyvsp[-1].Number != 0) {
- YYABORT;
- }
- yyval.Number = yyvsp[0].Number;
- yyDSTmode = DSToff;
- }
-break;
-case 15:
-#line 195 "parsedate.y"
-{
- yyval.Number = yyvsp[0].Number;
- yyDSTmode = DSToff;
- }
-break;
-case 16:
-#line 201 "parsedate.y"
-{
- int i;
-
- /* Unix and GMT and numeric timezones -- a little confusing. */
- if (yyvsp[0].Number < 0) {
- /* Don't work with negative modulus. */
- yyvsp[0].Number = -yyvsp[0].Number;
- if (yyvsp[0].Number > 9999 || (i = yyvsp[0].Number % 100) >= 60) {
- YYABORT;
- }
- yyval.Number = (yyvsp[0].Number / 100) * 60 + i;
- }
- else {
- if (yyvsp[0].Number > 9999 || (i = yyvsp[0].Number % 100) >= 60) {
- YYABORT;
- }
- yyval.Number = -((yyvsp[0].Number / 100) * 60 + i);
- }
- }
-break;
-case 17:
-#line 222 "parsedate.y"
-{
- yyMonth = yyvsp[-2].Number;
- yyDay = yyvsp[0].Number;
- }
-break;
-case 18:
-#line 226 "parsedate.y"
-{
- if (yyvsp[-4].Number > 100) {
- yyYear = yyvsp[-4].Number;
- yyMonth = yyvsp[-2].Number;
- yyDay = yyvsp[0].Number;
- }
- else {
- yyMonth = yyvsp[-4].Number;
- yyDay = yyvsp[-2].Number;
- yyYear = yyvsp[0].Number;
- }
- }
-break;
-case 19:
-#line 238 "parsedate.y"
-{
- yyMonth = yyvsp[-1].Number;
- yyDay = yyvsp[0].Number;
- }
-break;
-case 20:
-#line 242 "parsedate.y"
-{
- yyMonth = yyvsp[-3].Number;
- yyDay = yyvsp[-2].Number;
- yyYear = yyvsp[0].Number;
- }
-break;
-case 21:
-#line 247 "parsedate.y"
-{
- yyDay = yyvsp[-1].Number;
- yyMonth = yyvsp[0].Number;
- }
-break;
-case 22:
-#line 251 "parsedate.y"
-{
- yyDay = yyvsp[-2].Number;
- yyMonth = yyvsp[-1].Number;
- yyYear = yyvsp[0].Number;
- }
-break;
-case 23:
-#line 256 "parsedate.y"
-{
- yyDay = yyvsp[-2].Number;
- yyMonth = yyvsp[-1].Number;
- yyYear = yyvsp[0].Number;
- }
-break;
-case 24:
-#line 263 "parsedate.y"
-{
- yyRelSeconds += yyvsp[-1].Number * yyvsp[0].Number;
- }
-break;
-case 25:
-#line 266 "parsedate.y"
-{
- yyRelSeconds += yyvsp[-1].Number * yyvsp[0].Number;
- }
-break;
-case 26:
-#line 269 "parsedate.y"
-{
- yyRelMonth += yyvsp[-1].Number * yyvsp[0].Number;
- }
-break;
-case 27:
-#line 272 "parsedate.y"
-{
- yyRelMonth += yyvsp[-1].Number * yyvsp[0].Number;
- }
-break;
-case 28:
-#line 277 "parsedate.y"
-{
- yyval.Meridian = MER24;
- }
-break;
-case 29:
-#line 280 "parsedate.y"
-{
- yyval.Meridian = yyvsp[0].Meridian;
- }
-break;
-#line 1181 "y.tab.c"
- }
- yyssp -= yym;
- yystate = *yyssp;
- yyvsp -= yym;
- yym = yylhs[yyn];
- if (yystate == 0 && yym == 0)
- {
-#if YYDEBUG
- if (yydebug)
- printf("%sdebug: after reduction, shifting from state 0 to\
- state %d\n", YYPREFIX, YYFINAL);
-#endif
- yystate = YYFINAL;
- *++yyssp = YYFINAL;
- *++yyvsp = yyval;
- if (yychar < 0)
- {
- if ((yychar = yylex()) < 0) yychar = 0;
-#if YYDEBUG
- if (yydebug)
- {
- yys = 0;
- if (yychar <= YYMAXTOKEN) yys = yyname[yychar];
- if (!yys) yys = "illegal-symbol";
- printf("%sdebug: state %d, reading %d (%s)\n",
- YYPREFIX, YYFINAL, yychar, yys);
- }
-#endif
- }
- if (yychar == 0) goto yyaccept;
- goto yyloop;
- }
- if ((yyn = yygindex[yym]) && (yyn += yystate) >= 0 &&
- yyn <= YYTABLESIZE && yycheck[yyn] == yystate)
- yystate = yytable[yyn];
- else
- yystate = yydgoto[yym];
-#if YYDEBUG
- if (yydebug)
- printf("%sdebug: after reduction, shifting from state %d \
-to state %d\n", YYPREFIX, *yyssp, yystate);
-#endif
- if (yyssp >= yyss + yystacksize - 1)
- {
- goto yyoverflow;
- }
- *++yyssp = yystate;
- *++yyvsp = yyval;
- goto yyloop;
-yyoverflow:
- yyerror("yacc stack overflow");
-yyabort:
- return (1);
-yyaccept:
- return (0);
-}