/* * This is an open source non-commercial project. Dear PVS-Studio, please check it. * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com */ #include #include #include #define YYBYACC 1 #define YYMAJOR 1 #define YYMINOR 9 #define YYLEX yylex() #define YYEMPTY -1 #define yyclearin (yychar=(YYEMPTY)) #define yyerrok (yyerrflag=0) #define YYRECOVERING() (yyerrflag!=0) #define YYPREFIX "yy" #line 2 "getdate.y" /* ** Originally written by Steven M. Bellovin while ** at the University of North Carolina at Chapel Hill. Later tweaked by ** a couple of people on Usenet. Completely overhauled by Rich $alz ** and Jim Berets in August, 1990; ** ** This grammar has 10 shift/reduce conflicts. ** ** This code is in the public domain and has no copyright. */ /* SUPPRESS 287 on yaccpar_sccsid *//* Unused static variable */ /* SUPPRESS 288 on yyerrlab *//* Label unused */ /* PVS Studio suppression*/ /* -V::1037, 1042*/ #include #include #include #include #if defined(HAVE_STDINT_H) # include #elif defined(HAVE_INTTYPES_H) # include #endif #include #include #include #include "sudo_compat.h" #define EPOCH 1970 #define HOUR(x) ((time_t)(x) * 60) #define SECSPERDAY (24L * 60L * 60L) /* ** 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 these by using a good ** union as the yacc stack. (This routine was originally written before ** yacc had the %union construct.) Maybe someday; right now we only use ** the %union very rarely. */ static char *yyInput; static DSTMODE yyDSTmode; static time_t yyDayOrdinal; static time_t yyDayNumber; static int yyHaveDate; static int yyHaveDay; static int yyHaveRel; static int yyHaveTime; static int yyHaveZone; 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 int yyerror(const char *s); static int yylex(void); int yyparse(void); #line 97 "getdate.y" #ifndef YYSTYPE_DEFINED #define YYSTYPE_DEFINED typedef union { time_t Number; enum _MERIDIAN Meridian; } YYSTYPE; #endif /* YYSTYPE_DEFINED */ #line 115 "getdate.c" #define tAGO 257 #define tDAY 258 #define tDAYZONE 259 #define tID 260 #define tMERIDIAN 261 #define tMINUTE_UNIT 262 #define tMONTH 263 #define tMONTH_UNIT 264 #define tSEC_UNIT 265 #define tSNUMBER 266 #define tUNUMBER 267 #define tZONE 268 #define tDST 269 #define YYERRCODE 256 const short yylhs[] = { -1, 0, 0, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 4, 4, 4, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 7, 7, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 1, 1, }; const short yylen[] = { 2, 0, 2, 1, 1, 1, 1, 1, 1, 2, 4, 4, 6, 6, 1, 1, 2, 1, 2, 2, 3, 5, 3, 3, 2, 4, 2, 3, 2, 1, 2, 2, 1, 2, 2, 1, 2, 2, 1, 1, 0, 1, }; const short yydefred[] = { 1, 0, 0, 15, 32, 0, 38, 35, 0, 0, 0, 2, 3, 4, 5, 6, 7, 8, 0, 18, 0, 31, 36, 33, 19, 9, 30, 0, 37, 34, 0, 0, 0, 16, 28, 0, 23, 27, 22, 0, 0, 25, 41, 11, 0, 10, 0, 0, 21, 13, 12, }; const short yydgoto[] = { 1, 45, 11, 12, 13, 14, 15, 16, 17, 18, }; const short yysindex[] = { 0, -249, -38, 0, 0, -260, 0, 0, -240, -47, -248, 0, 0, 0, 0, 0, 0, 0, -237, 0, -18, 0, 0, 0, 0, 0, 0, -262, 0, 0, -239, -238, -236, 0, 0, -235, 0, 0, 0, -56, -19, 0, 0, 0, -234, 0, -232, -258, 0, 0, 0,}; const short yyrindex[] = { 0, 0, 1, 0, 0, 0, 0, 0, 0, 69, 12, 0, 0, 0, 0, 0, 0, 0, 23, 0, 34, 0, 0, 0, 0, 0, 0, 67, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 56, 45, 0, 0, 0, 0, 0, 0, 56, 0, 0, 0,}; const short yygindex[] = { 0, -17, 0, 0, 0, 0, 0, 0, 0, 0, }; #define YYTABLESIZE 337 const short yytable[] = { 32, 17, 44, 42, 36, 37, 19, 20, 49, 2, 3, 31, 14, 4, 5, 6, 7, 8, 9, 10, 34, 33, 21, 29, 22, 23, 35, 38, 46, 39, 50, 40, 41, 47, 24, 48, 0, 0, 0, 0, 0, 0, 0, 0, 0, 20, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 40, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 26, 0, 39, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 42, 0, 0, 0, 0, 43, 24, 0, 0, 25, 26, 27, 28, 29, 30, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 17, 17, 0, 0, 17, 17, 17, 17, 17, 17, 17, 14, 14, 0, 0, 14, 14, 14, 14, 14, 14, 14, 29, 29, 0, 0, 29, 29, 29, 29, 29, 29, 29, 24, 24, 0, 0, 24, 24, 24, 24, 24, 24, 24, 20, 20, 0, 0, 20, 20, 20, 20, 20, 20, 20, 40, 40, 0, 0, 40, 40, 40, 40, 0, 40, 40, 26, 26, 0, 39, 26, 26, 26, 26, 0, 0, 26, 39, 39, }; const short yycheck[] = { 47, 0, 58, 261, 266, 267, 44, 267, 266, 258, 259, 58, 0, 262, 263, 264, 265, 266, 267, 268, 257, 269, 262, 0, 264, 265, 44, 266, 47, 267, 47, 267, 267, 267, 0, 267, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, -1, 0, -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, 261, -1, -1, -1, -1, 266, 258, -1, -1, 261, 262, 263, 264, 265, 266, -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, 258, 259, -1, -1, 262, 263, 264, 265, 266, 267, 268, 258, 259, -1, -1, 262, 263, 264, 265, 266, 267, 268, 258, 259, -1, -1, 262, 263, 264, 265, 266, 267, 268, 258, 259, -1, -1, 262, 263, 264, 265, 266, 267, 268, 258, 259, -1, -1, 262, 263, 264, 265, 266, 267, 268, 258, 259, -1, -1, 262, 263, 264, 265, -1, 267, 268, 258, 259, -1, 259, 262, 263, 264, 265, -1, -1, 268, 267, 268, }; #define YYFINAL 1 #ifndef YYDEBUG #define YYDEBUG 0 #endif #define YYMAXTOKEN 269 #if YYDEBUG const char * const 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,"tAGO","tDAY", "tDAYZONE","tID","tMERIDIAN","tMINUTE_UNIT","tMONTH","tMONTH_UNIT","tSEC_UNIT", "tSNUMBER","tUNUMBER","tZONE","tDST", }; const char * const yyrule[] = {"$accept : spec", "spec :", "spec : spec item", "item : time", "item : zone", "item : date", "item : day", "item : rel", "item : number", "time : tUNUMBER tMERIDIAN", "time : tUNUMBER ':' tUNUMBER o_merid", "time : tUNUMBER ':' tUNUMBER tSNUMBER", "time : tUNUMBER ':' tUNUMBER ':' tUNUMBER o_merid", "time : tUNUMBER ':' tUNUMBER ':' tUNUMBER tSNUMBER", "zone : tZONE", "zone : tDAYZONE", "zone : tZONE tDST", "day : tDAY", "day : tDAY ','", "day : tUNUMBER tDAY", "date : tUNUMBER '/' tUNUMBER", "date : tUNUMBER '/' tUNUMBER '/' tUNUMBER", "date : tUNUMBER tSNUMBER tSNUMBER", "date : tUNUMBER tMONTH tSNUMBER", "date : tMONTH tUNUMBER", "date : tMONTH tUNUMBER ',' tUNUMBER", "date : tUNUMBER tMONTH", "date : tUNUMBER tMONTH tUNUMBER", "rel : relunit tAGO", "rel : relunit", "relunit : tUNUMBER tMINUTE_UNIT", "relunit : tSNUMBER tMINUTE_UNIT", "relunit : tMINUTE_UNIT", "relunit : tSNUMBER tSEC_UNIT", "relunit : tUNUMBER tSEC_UNIT", "relunit : tSEC_UNIT", "relunit : tSNUMBER tMONTH_UNIT", "relunit : tUNUMBER tMONTH_UNIT", "relunit : tMONTH_UNIT", "number : tUNUMBER", "o_merid :", "o_merid : tMERIDIAN", }; #endif #ifdef YYSTACKSIZE #undef YYMAXDEPTH #define YYMAXDEPTH YYSTACKSIZE #else #ifdef YYMAXDEPTH #define YYSTACKSIZE YYMAXDEPTH #else #define YYSTACKSIZE 10000 #define YYMAXDEPTH 10000 #endif #endif #define YYINITSTACKSIZE 200 /* LINTUSED */ int yydebug; int yynerrs; int yyerrflag; int yychar; short *yyssp; YYSTYPE *yyvsp; YYSTYPE yyval; YYSTYPE yylval; short *yyss; short *yysslim; YYSTYPE *yyvs; unsigned int yystacksize; int yyparse(void); #line 316 "getdate.y" /* Month and day table. */ static TABLE const 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 }, { "sept", tMONTH, 9 }, { "october", tMONTH, 10 }, { "november", tMONTH, 11 }, { "december", tMONTH, 12 }, { "sunday", tDAY, 0 }, { "monday", tDAY, 1 }, { "tuesday", tDAY, 2 }, { "tues", tDAY, 2 }, { "wednesday", tDAY, 3 }, { "wednes", tDAY, 3 }, { "thursday", tDAY, 4 }, { "thur", tDAY, 4 }, { "thurs", tDAY, 4 }, { "friday", tDAY, 5 }, { "saturday", tDAY, 6 }, { NULL } }; /* Time units table. */ static TABLE const UnitsTable[] = { { "year", tMONTH_UNIT, 12 }, { "month", tMONTH_UNIT, 1 }, { "fortnight", tMINUTE_UNIT, 14 * 24 * 60 }, { "week", tMINUTE_UNIT, 7 * 24 * 60 }, { "day", tMINUTE_UNIT, 1 * 24 * 60 }, { "hour", tMINUTE_UNIT, 60 }, { "minute", tMINUTE_UNIT, 1 }, { "min", tMINUTE_UNIT, 1 }, { "second", tSEC_UNIT, 1 }, { "sec", tSEC_UNIT, 1 }, { NULL } }; /* Assorted relative-time words. */ static TABLE const OtherTable[] = { { "tomorrow", tMINUTE_UNIT, 1 * 24 * 60 }, { "yesterday", tMINUTE_UNIT, -1 * 24 * 60 }, { "today", tMINUTE_UNIT, 0 }, { "now", tMINUTE_UNIT, 0 }, { "last", tUNUMBER, -1 }, { "this", tUNUMBER, 0 }, { "next", tUNUMBER, 2 }, { "first", tUNUMBER, 1 }, /* { "second", tUNUMBER, 2 }, */ { "third", tUNUMBER, 3 }, { "fourth", tUNUMBER, 4 }, { "fifth", tUNUMBER, 5 }, { "sixth", tUNUMBER, 6 }, { "seventh", tUNUMBER, 7 }, { "eighth", tUNUMBER, 8 }, { "ninth", tUNUMBER, 9 }, { "tenth", tUNUMBER, 10 }, { "eleventh", tUNUMBER, 11 }, { "twelfth", tUNUMBER, 12 }, { "ago", tAGO, 1 }, { NULL } }; /* The timezone table. */ /* Some of these are commented out because a time_t can't store a float. */ static TABLE const TimezoneTable[] = { { "gmt", tZONE, HOUR( 0) }, /* Greenwich Mean */ { "ut", tZONE, HOUR( 0) }, /* Universal (Coordinated) */ { "utc", tZONE, HOUR( 0) }, { "wet", tZONE, HOUR( 0) }, /* Western European */ { "bst", tDAYZONE, HOUR( 0) }, /* British Summer */ { "wat", tZONE, HOUR( 1) }, /* West Africa */ { "at", tZONE, HOUR( 2) }, /* Azores */ #if 0 /* For completeness. BST is also British Summer, and GST is * also Guam Standard. */ { "bst", tZONE, HOUR( 3) }, /* Brazil Standard */ { "gst", tZONE, HOUR( 3) }, /* Greenland Standard */ #endif #if 0 { "nft", tZONE, HOUR(3.5) }, /* Newfoundland */ { "nst", tZONE, HOUR(3.5) }, /* Newfoundland Standard */ { "ndt", tDAYZONE, HOUR(3.5) }, /* Newfoundland Daylight */ #endif { "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 */ { "hst", tZONE, HOUR(10) }, /* Hawaii Standard */ { "hdt", tDAYZONE, HOUR(10) }, /* Hawaii Daylight */ { "cat", tZONE, HOUR(10) }, /* Central Alaska */ { "ahst", tZONE, HOUR(10) }, /* Alaska-Hawaii Standard */ { "nt", tZONE, HOUR(11) }, /* Nome */ { "idlw", tZONE, HOUR(12) }, /* International Date Line West */ { "cet", tZONE, -HOUR(1) }, /* Central European */ { "met", tZONE, -HOUR(1) }, /* Middle European */ { "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 */ { "eet", tZONE, -HOUR(2) }, /* Eastern Europe, USSR Zone 1 */ { "bt", tZONE, -HOUR(3) }, /* Baghdad, USSR Zone 2 */ #if 0 { "it", tZONE, -HOUR(3.5) },/* Iran */ #endif { "zp4", tZONE, -HOUR(4) }, /* USSR Zone 3 */ { "zp5", tZONE, -HOUR(5) }, /* USSR Zone 4 */ #if 0 { "ist", tZONE, -HOUR(5.5) },/* Indian Standard */ #endif { "zp6", tZONE, -HOUR(6) }, /* USSR Zone 5 */ #if 0 /* For completeness. NST is also Newfoundland Stanard, and SST is * also Swedish Summer. */ { "nst", tZONE, -HOUR(6.5) },/* North Sumatra */ { "sst", tZONE, -HOUR(7) }, /* South Sumatra, USSR Zone 6 */ #endif /* 0 */ { "wast", tZONE, -HOUR(7) }, /* West Australian Standard */ { "wadt", tDAYZONE, -HOUR(7) }, /* West Australian Daylight */ #if 0 { "jt", tZONE, -HOUR(7.5) },/* Java (3pm in Cronusland!) */ #endif { "cct", tZONE, -HOUR(8) }, /* China Coast, USSR Zone 7 */ { "jst", tZONE, -HOUR(9) }, /* Japan Standard, USSR Zone 8 */ #if 0 { "cast", tZONE, -HOUR(9.5) },/* Central Australian Standard */ { "cadt", tDAYZONE, -HOUR(9.5) },/* Central Australian Daylight */ #endif { "east", tZONE, -HOUR(10) }, /* Eastern Australian Standard */ { "eadt", tDAYZONE, -HOUR(10) }, /* Eastern Australian Daylight */ { "gst", tZONE, -HOUR(10) }, /* Guam Standard, USSR Zone 9 */ { "nzt", tZONE, -HOUR(12) }, /* New Zealand */ { "nzst", tZONE, -HOUR(12) }, /* New Zealand Standard */ { "nzdt", tDAYZONE, -HOUR(12) }, /* New Zealand Daylight */ { "idle", tZONE, -HOUR(12) }, /* International Date Line East */ { NULL } }; /* Military timezone table. */ static TABLE const MilitaryTable[] = { { "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 } }; /* ARGSUSED */ static int yyerror(const char *s) { return 0; } static time_t ToSeconds(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; if (Hours == 12) Hours = 0; return (Hours * 60L + Minutes) * 60L + Seconds; case MERpm: if (Hours < 1 || Hours > 12) return -1; if (Hours == 12) Hours = 0; return ((Hours + 12) * 60L + Minutes) * 60L + Seconds; default: abort (); } /* NOTREACHED */ } /* Year is either * A negative number, which means to use its absolute value (why?) * A number from 0 to 99, which means a year from 1900 to 1999, or * The actual year (>=100). */ 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 DSTmode) { static int DaysInMonth[12] = { 31, 0, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }; struct tm *tm; time_t tod; time_t Julian; int i; if (Year < 0) Year = -Year; if (Year < 69) Year += 2000; else if (Year < 100) { Year += 1900; if (Year < EPOCH) Year += 100; } DaysInMonth[1] = Year % 4 == 0 && (Year % 100 != 0 || Year % 400 == 0) ? 29 : 28; /* 32-bit time_t cannot represent years past 2038 */ if (Year < EPOCH || (sizeof(time_t) == sizeof(int) && Year > 2038) || Month < 1 || Month > 12 /* Lint fluff: "conversion from long may lose accuracy" */ || Day < 1 || Day > DaysInMonth[(int)--Month]) return -1; for (Julian = Day - 1, i = 0; i < Month; i++) Julian += DaysInMonth[i]; for (i = EPOCH; i < Year; 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 && (tm = localtime(&Julian)) && tm->tm_isdst)) Julian -= 60 * 60; return Julian; } static time_t DSTcorrect(time_t Start, time_t Future) { struct tm *start_tm; struct tm *future_tm; time_t StartDay; time_t FutureDay; start_tm = localtime(&Start); future_tm = localtime(&Future); if (!start_tm || !future_tm) return -1; StartDay = (start_tm->tm_hour + 1) % 24; FutureDay = (future_tm->tm_hour + 1) % 24; return (Future - Start) + (StartDay - FutureDay) * 60L * 60L; } static time_t RelativeDate(time_t Start, time_t DayOrdinal, time_t DayNumber) { struct tm *tm; time_t now; now = Start; if (!(tm = localtime(&now))) return -1; now += SECSPERDAY * ((DayNumber - tm->tm_wday + 7) % 7); now += 7 * SECSPERDAY * (DayOrdinal <= 0 ? DayOrdinal : DayOrdinal - 1); return DSTcorrect(Start, now); } static time_t RelativeMonth(time_t Start, time_t RelMonth) { struct tm *tm; time_t Month; time_t Year; if (RelMonth == 0) return 0; if (!(tm = localtime(&Start))) return -1; Month = 12 * (tm->tm_year + 1900) + 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) { char *p; char *q; const TABLE *tp; int i; int abbrev; /* Make it lowercase. */ for (p = buff; *p; p++) if (isupper((unsigned char)*p)) *p = tolower((unsigned char)*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; } if (strcmp(buff, "dst") == 0) return tDST; 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; } buff[i] = 's'; /* Put back for "this" in OtherTable. */ } 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((unsigned char)*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(void) { char c; char *p; char buff[20]; int Count; int sign; for ( ; ; ) { while (isspace((unsigned char)*yyInput)) yyInput++; if (isdigit((unsigned char)(c = *yyInput)) || c == '-' || c == '+') { if (c == '-' || c == '+') { sign = c == '-' ? -1 : 1; if (!isdigit((unsigned char)*++yyInput)) /* skip the '-' sign */ continue; } else sign = 0; for (yylval.Number = 0; isdigit((unsigned char)(c = *yyInput++)); ) yylval.Number = 10 * yylval.Number + c - '0'; yyInput--; if (sign < 0) yylval.Number = -yylval.Number; return sign ? tSNUMBER : tUNUMBER; } if (isalpha((unsigned char)c)) { for (p = buff; isalpha((unsigned char)(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; if (c == '(') Count++; else if (c == ')') Count--; } while (Count > 0); } } #define TM_YEAR_ORIGIN 1900 /* Yield A - B, measured in seconds. */ static long difftm(struct tm *a, struct tm *b) { int ay = a->tm_year + (TM_YEAR_ORIGIN - 1); int by = b->tm_year + (TM_YEAR_ORIGIN - 1); int days = ( /* difference in day of year */ a->tm_yday - b->tm_yday /* + intervening leap days */ + ((ay >> 2) - (by >> 2)) - (ay/100 - by/100) + ((ay/100 >> 2) - (by/100 >> 2)) /* + difference in years * 365 */ + (long)(ay-by) * 365 ); return (60*(60*(24*days + (a->tm_hour - b->tm_hour)) + (a->tm_min - b->tm_min)) + (a->tm_sec - b->tm_sec)); } time_t get_date(char *p) { struct tm *tm, *gmt, gmtbuf; time_t Start; time_t tod; time_t now; time_t tz; yyInput = p; (void)time (&now); gmt = gmtime (&now); if (gmt != NULL) { /* Make a copy, in case localtime modifies *tm (I think that comment now applies to *gmt, but I am too lazy to dig into how gmtime and locatime allocate the structures they return pointers to). */ gmtbuf = *gmt; gmt = &gmtbuf; } if (! (tm = localtime (&now))) return -1; if (gmt != NULL) tz = difftm (gmt, tm) / 60; else /* We are on a system like VMS, where the system clock is in local time and the system has no concept of timezones. Hopefully we can fake this out (for the case in which the user specifies no timezone) by just saying the timezone is zero. */ tz = 0; if(tm->tm_isdst) tz += 60; yyYear = tm->tm_year + 1900; yyMonth = tm->tm_mon + 1; yyDay = tm->tm_mday; yyTimezone = tz; 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) { Start = Convert(yyMonth, yyDay, yyYear, yyHour, yyMinutes, yySeconds, yyMeridian, yyDSTmode); if (Start < 0) return -1; } else { Start = now; if (!yyHaveRel) Start -= ((tm->tm_hour * 60L + tm->tm_min) * 60L) + tm->tm_sec; } Start += yyRelSeconds; Start += RelativeMonth(Start, yyRelMonth); if (yyHaveDay && !yyHaveDate) { tod = RelativeDate(Start, yyDayOrdinal, yyDayNumber); Start += tod; } /* 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 /* ARGSUSED */ int main(int argc, char *argv[]) { char buff[128]; time_t d; (void)printf("Enter date, or blank line to exit.\n\t> "); (void)fflush(stdout); while (fgets(buff, sizeof(buff), stdin) && buff[0]) { d = get_date(buff); if (d == -1) (void)printf("Bad format - couldn't convert.\n"); else (void)printf("%s", ctime(&d)); (void)printf("\t> "); (void)fflush(stdout); } exit(0); /* NOTREACHED */ } #endif /* TEST */ #line 954 "getdate.c" /* allocate initial stack or double stack size, up to YYMAXDEPTH */ static int yygrowstack(void) { unsigned int newsize; long sslen; short *newss; YYSTYPE *newvs; if ((newsize = yystacksize) == 0) newsize = YYINITSTACKSIZE; else if (newsize >= YYMAXDEPTH) return -1; else if ((newsize *= 2) > YYMAXDEPTH) newsize = YYMAXDEPTH; #ifdef SIZE_MAX #define YY_SIZE_MAX SIZE_MAX #else #define YY_SIZE_MAX 0xffffffffU #endif if (YY_SIZE_MAX / newsize < sizeof *newss) goto bail; sslen = yyssp - yyss; newss = yyss ? realloc(yyss, newsize * sizeof *newss) : malloc(newsize * sizeof *newss); /* overflow check above */ if (newss == NULL) goto bail; yyss = newss; yyssp = newss + sslen; newvs = yyvs ? realloc(yyvs, newsize * sizeof *newvs) : malloc(newsize * sizeof *newvs); /* overflow check above */ if (newvs == NULL) goto bail; yyvs = newvs; yyvsp = newvs + sslen; yystacksize = newsize; yysslim = yyss + newsize - 1; return 0; bail: free(yyss); free(yyvs); yyss = yyssp = NULL; yyvs = yyvsp = NULL; yystacksize = 0; return -1; } #define YYABORT goto yyabort #define YYREJECT goto yyabort #define YYACCEPT goto yyaccept #define YYERROR goto yyerrlab int yyparse(void) { int yym, yyn, yystate; #if YYDEBUG const char *yys; if ((yys = getenv("YYDEBUG"))) { yyn = *yys; if (yyn >= '0' && yyn <= '9') yydebug = yyn - '0'; } #endif /* YYDEBUG */ yynerrs = 0; yyerrflag = 0; yychar = (-1); if (yyss == NULL && yygrowstack()) goto yyoverflow; yyssp = yyss; yyvsp = yyvs; *yyssp = yystate = 0; yyloop: if ((yyn = yydefred[yystate]) != 0) 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 >= yysslim && yygrowstack()) { 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; #if defined(__GNUC__) goto yynewerror; #endif yynewerror: yyerror("syntax error"); #if defined(__GNUC__) 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 >= yysslim && yygrowstack()) { 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]; if (yym) yyval = yyvsp[1-yym]; else memset(&yyval, 0, sizeof yyval); switch (yyn) { case 3: #line 115 "getdate.y" { yyHaveTime++; } break; case 4: #line 118 "getdate.y" { yyHaveZone++; } break; case 5: #line 121 "getdate.y" { yyHaveDate++; } break; case 6: #line 124 "getdate.y" { yyHaveDay++; } break; case 7: #line 127 "getdate.y" { yyHaveRel++; } break; case 9: #line 133 "getdate.y" { yyHour = yyvsp[-1].Number; yyMinutes = 0; yySeconds = 0; yyMeridian = yyvsp[0].Meridian; } break; case 10: #line 139 "getdate.y" { yyHour = yyvsp[-3].Number; yyMinutes = yyvsp[-1].Number; yySeconds = 0; yyMeridian = yyvsp[0].Meridian; } break; case 11: #line 145 "getdate.y" { yyHour = yyvsp[-3].Number; yyMinutes = yyvsp[-1].Number; yyMeridian = MER24; yyDSTmode = DSToff; yyTimezone = - (yyvsp[0].Number % 100 + (yyvsp[0].Number / 100) * 60); } break; case 12: #line 152 "getdate.y" { yyHour = yyvsp[-5].Number; yyMinutes = yyvsp[-3].Number; yySeconds = yyvsp[-1].Number; yyMeridian = yyvsp[0].Meridian; } break; case 13: #line 158 "getdate.y" { yyHour = yyvsp[-5].Number; yyMinutes = yyvsp[-3].Number; yySeconds = yyvsp[-1].Number; yyMeridian = MER24; yyDSTmode = DSToff; yyTimezone = - (yyvsp[0].Number % 100 + (yyvsp[0].Number / 100) * 60); } break; case 14: #line 168 "getdate.y" { yyTimezone = yyvsp[0].Number; yyDSTmode = DSToff; } break; case 15: #line 172 "getdate.y" { yyTimezone = yyvsp[0].Number; yyDSTmode = DSTon; } break; case 16: #line 177 "getdate.y" { yyTimezone = yyvsp[-1].Number; yyDSTmode = DSTon; } break; case 17: #line 183 "getdate.y" { yyDayOrdinal = 1; yyDayNumber = yyvsp[0].Number; } break; case 18: #line 187 "getdate.y" { yyDayOrdinal = 1; yyDayNumber = yyvsp[-1].Number; } break; case 19: #line 191 "getdate.y" { yyDayOrdinal = yyvsp[-1].Number; yyDayNumber = yyvsp[0].Number; } break; case 20: #line 197 "getdate.y" { yyMonth = yyvsp[-2].Number; yyDay = yyvsp[0].Number; } break; case 21: #line 201 "getdate.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 22: #line 212 "getdate.y" { /* ISO 8601 format. yyyy-mm-dd. */ yyYear = yyvsp[-2].Number; yyMonth = -yyvsp[-1].Number; yyDay = -yyvsp[0].Number; } break; case 23: #line 218 "getdate.y" { /* e.g. 17-JUN-1992. */ yyDay = yyvsp[-2].Number; yyMonth = yyvsp[-1].Number; yyYear = -yyvsp[0].Number; } break; case 24: #line 224 "getdate.y" { yyMonth = yyvsp[-1].Number; yyDay = yyvsp[0].Number; } break; case 25: #line 228 "getdate.y" { yyMonth = yyvsp[-3].Number; yyDay = yyvsp[-2].Number; yyYear = yyvsp[0].Number; } break; case 26: #line 233 "getdate.y" { yyMonth = yyvsp[0].Number; yyDay = yyvsp[-1].Number; } break; case 27: #line 237 "getdate.y" { yyMonth = yyvsp[-1].Number; yyDay = yyvsp[-2].Number; yyYear = yyvsp[0].Number; } break; case 28: #line 244 "getdate.y" { yyRelSeconds = -yyRelSeconds; yyRelMonth = -yyRelMonth; } break; case 30: #line 251 "getdate.y" { yyRelSeconds += yyvsp[-1].Number * yyvsp[0].Number * 60L; } break; case 31: #line 254 "getdate.y" { yyRelSeconds += yyvsp[-1].Number * yyvsp[0].Number * 60L; } break; case 32: #line 257 "getdate.y" { yyRelSeconds += yyvsp[0].Number * 60L; } break; case 33: #line 260 "getdate.y" { yyRelSeconds += yyvsp[-1].Number; } break; case 34: #line 263 "getdate.y" { yyRelSeconds += yyvsp[-1].Number; } break; case 35: #line 266 "getdate.y" { yyRelSeconds++; } break; case 36: #line 269 "getdate.y" { yyRelMonth += yyvsp[-1].Number * yyvsp[0].Number; } break; case 37: #line 272 "getdate.y" { yyRelMonth += yyvsp[-1].Number * yyvsp[0].Number; } break; case 38: #line 275 "getdate.y" { yyRelMonth += yyvsp[0].Number; } break; case 39: #line 280 "getdate.y" { if (yyHaveTime && yyHaveDate && !yyHaveRel) yyYear = yyvsp[0].Number; else { if(yyvsp[0].Number>10000) { yyHaveDate++; yyDay= (yyvsp[0].Number)%100; yyMonth= (yyvsp[0].Number/100)%100; yyYear = yyvsp[0].Number/10000; } else { yyHaveTime++; if (yyvsp[0].Number < 100) { yyHour = yyvsp[0].Number; yyMinutes = 0; } else { yyHour = yyvsp[0].Number / 100; yyMinutes = yyvsp[0].Number % 100; } yySeconds = 0; yyMeridian = MER24; } } } break; case 40: #line 307 "getdate.y" { yyval.Meridian = MER24; } break; case 41: #line 310 "getdate.y" { yyval.Meridian = yyvsp[0].Meridian; } break; #line 1434 "getdate.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 >= yysslim && yygrowstack()) { goto yyoverflow; } *++yyssp = yystate; *++yyvsp = yyval; goto yyloop; yyoverflow: yyerror("yacc stack overflow"); yyabort: free(yyss); free(yyvs); yyss = yyssp = NULL; yyvs = yyvsp = NULL; yystacksize = 0; return (1); yyaccept: free(yyss); free(yyvs); yyss = yyssp = NULL; yyvs = yyvsp = NULL; yystacksize = 0; return (0); }