# 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; ** send any email to Rich. ** ** 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 */ /* this file was taken from the gnu sh-utils and modified so that it doesn't use "struct timeb". also, some configuration stuff was removed. it's less portable now, but it doesn't require you to have a configure script. */ #include #include #include #include #include #ifndef BSD43 #include #endif #ifdef timezone #undef timezone /* needed for sgi */ #endif #define yyparse getdate_yyparse #define yylex getdate_yylex #define yyerror getdate_yyerror static int yylex (); static int yyerror (); #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; # line 100 "getdate.y" typedef union { time_t Number; enum _MERIDIAN Meridian; } YYSTYPE; # 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 yyclearin yychar = -1 #define yyerrok yyerrflag = 0 extern int yychar; extern short yyerrflag; #ifndef YYMAXDEPTH #define YYMAXDEPTH 150 #endif YYSTYPE yylval, yyval; # define YYERRCODE 256 # line 312 "getdate.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 }, { "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 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 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", tMINUTE_UNIT, 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 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 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(s) char *s; { return 0; } 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 * 60L + Minutes) * 60L + Seconds; case MERpm: if (Hours < 1 || Hours > 12) return -1; return ((Hours + 12) * 60L + Minutes) * 60L + Seconds; default: abort (); } /* NOTREACHED */ } static time_t Convert(Month, Day, Year, Hours, Minutes, Seconds, Meridian, DSTmode) 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 }; 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 (Year < EPOCH || Year > 1999 || 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 && localtime(&Julian)->tm_isdst)) Julian -= 60 * 60; return Julian; } static time_t DSTcorrect(Start, Future) 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) * 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 = localtime(&now); now += SECSPERDAY * ((DayNumber - tm->tm_wday + 7) % 7); now += 7 * SECSPERDAY * (DayOrdinal <= 0 ? DayOrdinal : DayOrdinal - 1); return DSTcorrect(Start, now); } static time_t RelativeMonth(Start, RelMonth) time_t Start; time_t RelMonth; { struct tm *tm; time_t Month; time_t Year; if (RelMonth == 0) return 0; 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(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 = 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; } 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(*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(*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; if (c == '(') Count++; else if (c == ')') Count--; } while (Count > 0); } } #define TM_YEAR_ORIGIN 1900 /* Yield A - B, measured in seconds. */ static long difftm (a, b) struct tm *a, *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(p) char *p; { struct tm *tm, gmt; time_t Start; time_t now, tod; short timezone; yyInput = p; time (&now); if (! (tm = gmtime (&now))) return -1; gmt = *tm; /* Make a copy, in case localtime modifies *tm. */ if (! (tm = localtime (&now))) return -1; timezone = difftm (&gmt, tm) / 60; if(tm->tm_isdst) timezone += 60; tm = localtime(&now); yyYear = tm->tm_year; yyMonth = tm->tm_mon + 1; yyDay = tm->tm_mday; yyTimezone = timezone; 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; } #if defined(TEST) /* ARGSUSED */ int main(ac, av) int ac; char *av[]; { char buff[128]; time_t d; (void)printf("Enter date, or blank line to exit.\n\t> "); (void)fflush(stdout); while (gets(buff) && 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 /* defined(TEST) */ short yyexca[] ={ -1, 1, 0, -1, -2, 0, }; # define YYNPROD 42 # define YYLAST 228 short yyact[]={ 13, 11, 22, 28, 16, 12, 18, 17, 15, 9, 10, 38, 39, 20, 48, 44, 47, 46, 36, 43, 50, 32, 35, 34, 33, 29, 37, 31, 41, 45, 40, 30, 14, 8, 7, 6, 5, 4, 3, 2, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 49, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 21, 0, 0, 19, 25, 24, 27, 26, 23, 44, 0, 0, 0, 0, 42 }; short yypact[]={ -1000,-258,-1000,-1000,-1000,-1000,-1000,-1000,-1000, -45, -266,-1000,-242, -13,-230,-241,-1000,-1000,-1000,-1000, -245,-1000,-249,-240,-255,-1000,-1000,-1000,-1000, -14, -1000,-1000,-1000,-1000,-1000, -39, -18,-1000,-1000,-1000, -250,-1000,-1000,-251,-1000,-253,-1000,-246,-1000,-1000, -1000 }; short yypgo[]={ 0, 28, 40, 39, 38, 37, 36, 35, 34, 33, 32 }; short yyr1[]={ 0, 2, 2, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 5, 5, 5, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 8, 8, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 1, 1 }; short yyr2[]={ 0, 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 }; short yychk[]={ -1000, -2, -3, -4, -5, -6, -7, -8, -9, 267, 268, 259, 263, 258, -10, 266, 262, 265, 264, 261, 58, 258, 47, 266, 263, 262, 265, 264, 269, 267, 44, 257, 262, 265, 264, 267, 267, 266, 266, 267, 44, -1, 266, 58, 261, 47, 267, 267, 267, -1, 266 }; short yydef[]={ 1, -2, 2, 3, 4, 5, 6, 7, 8, 39, 14, 15, 0, 17, 29, 0, 32, 35, 38, 9, 0, 19, 0, 0, 26, 30, 34, 37, 16, 24, 18, 28, 31, 33, 36, 40, 20, 22, 23, 27, 0, 10, 11, 0, 41, 0, 25, 40, 21, 12, 13 }; #ifndef lint static char yaccpar_sccsid[] = "@(#)yaccpar 4.1 (Berkeley) 2/11/83"; #endif # # define YYFLAG -1000 # define YYERROR goto yyerrlab # define YYACCEPT return(0) # define YYABORT return(1) /* parser for yacc output */ #ifdef YYDEBUG int yydebug = 0; /* 1 for debugging */ #endif YYSTYPE yyv[YYMAXDEPTH]; /* where the values are stored */ int yychar = -1; /* current input token number */ int yynerrs = 0; /* number of errors */ short yyerrflag = 0; /* error recovery flag */ yyparse() { short yys[YYMAXDEPTH]; short yyj, yym; register YYSTYPE *yypvt; register short yystate, *yyps, yyn; register YYSTYPE *yypv; register short *yyxi; yystate = 0; yychar = -1; yynerrs = 0; yyerrflag = 0; yyps= &yys[-1]; yypv= &yyv[-1]; yystack: /* put a state and value onto the stack */ #ifdef YYDEBUG if( yydebug ) printf( "state %d, char 0%o\n", yystate, yychar ); #endif if( ++yyps> &yys[YYMAXDEPTH] ) { yyerror( "yacc stack overflow" ); return(1); } *yyps = yystate; ++yypv; *yypv = yyval; yynewstate: yyn = yypact[yystate]; if( yyn<= YYFLAG ) goto yydefault; /* simple state */ if( yychar<0 ) if( (yychar=yylex())<0 ) yychar=0; if( (yyn += yychar)<0 || yyn >= YYLAST ) goto yydefault; if( yychk[ yyn=yyact[ yyn ] ] == yychar ){ /* valid shift */ yychar = -1; yyval = yylval; yystate = yyn; if( yyerrflag > 0 ) --yyerrflag; goto yystack; } yydefault: /* default state action */ if( (yyn=yydef[yystate]) == -2 ) { if( yychar<0 ) if( (yychar=yylex())<0 ) yychar = 0; /* look through exception table */ for( yyxi=yyexca; (*yyxi!= (-1)) || (yyxi[1]!=yystate) ; yyxi += 2 ) ; /* VOID */ while( *(yyxi+=2) >= 0 ){ if( *yyxi == yychar ) break; } if( (yyn = yyxi[1]) < 0 ) return(0); /* accept */ } if( yyn == 0 ){ /* error */ /* error ... attempt to resume parsing */ switch( yyerrflag ){ case 0: /* brand new error */ yyerror( "syntax error" ); yyerrlab: ++yynerrs; case 1: case 2: /* incompletely recovered error ... try again */ yyerrflag = 3; /* find a state where "error" is a legal shift action */ while ( yyps >= yys ) { yyn = yypact[*yyps] + YYERRCODE; if( yyn>= 0 && yyn < YYLAST && yychk[yyact[yyn]] == YYERRCODE ){ yystate = yyact[yyn]; /* simulate a shift of "error" */ goto yystack; } yyn = yypact[*yyps]; /* the current yyps has no shift onn "error", pop stack */ #ifdef YYDEBUG if( yydebug ) printf( "error recovery pops state %d, uncovers %d\n", *yyps, yyps[-1] ); #endif --yyps; --yypv; } /* there is no state on the stack with an error shift ... abort */ yyabort: return(1); case 3: /* no shift yet; clobber input char */ #ifdef YYDEBUG if( yydebug ) printf( "error recovery discards char %d\n", yychar ); #endif if( yychar == 0 ) goto yyabort; /* don't discard EOF, quit */ yychar = -1; goto yynewstate; /* try again in the same state */ } } /* reduction by production yyn */ #ifdef YYDEBUG if( yydebug ) printf("reduce %d\n",yyn); #endif yyps -= yyr2[yyn]; yypvt = yypv; yypv -= yyr2[yyn]; yyval = yypv[1]; yym=yyn; /* consult goto table to find next state */ yyn = yyr1[yyn]; yyj = yypgo[yyn] + *yyps + 1; if( yyj>=YYLAST || yychk[ yystate = yyact[yyj] ] != -yyn ) yystate = yyact[yypgo[yyn]]; switch(yym){ case 3: # line 118 "getdate.y" { yyHaveTime++; } break; case 4: # line 121 "getdate.y" { yyHaveZone++; } break; case 5: # line 124 "getdate.y" { yyHaveDate++; } break; case 6: # line 127 "getdate.y" { yyHaveDay++; } break; case 7: # line 130 "getdate.y" { yyHaveRel++; } break; case 9: # line 136 "getdate.y" { yyHour = yypvt[-1].Number; yyMinutes = 0; yySeconds = 0; yyMeridian = yypvt[-0].Meridian; } break; case 10: # line 142 "getdate.y" { yyHour = yypvt[-3].Number; yyMinutes = yypvt[-1].Number; yySeconds = 0; yyMeridian = yypvt[-0].Meridian; } break; case 11: # line 148 "getdate.y" { yyHour = yypvt[-3].Number; yyMinutes = yypvt[-1].Number; yyMeridian = MER24; yyDSTmode = DSToff; yyTimezone = - (yypvt[-0].Number % 100 + (yypvt[-0].Number / 100) * 60); } break; case 12: # line 155 "getdate.y" { yyHour = yypvt[-5].Number; yyMinutes = yypvt[-3].Number; yySeconds = yypvt[-1].Number; yyMeridian = yypvt[-0].Meridian; } break; case 13: # line 161 "getdate.y" { yyHour = yypvt[-5].Number; yyMinutes = yypvt[-3].Number; yySeconds = yypvt[-1].Number; yyMeridian = MER24; yyDSTmode = DSToff; yyTimezone = - (yypvt[-0].Number % 100 + (yypvt[-0].Number / 100) * 60); } break; case 14: # line 171 "getdate.y" { yyTimezone = yypvt[-0].Number; yyDSTmode = DSToff; } break; case 15: # line 175 "getdate.y" { yyTimezone = yypvt[-0].Number; yyDSTmode = DSTon; } break; case 16: # line 180 "getdate.y" { yyTimezone = yypvt[-1].Number; yyDSTmode = DSTon; } break; case 17: # line 186 "getdate.y" { yyDayOrdinal = 1; yyDayNumber = yypvt[-0].Number; } break; case 18: # line 190 "getdate.y" { yyDayOrdinal = 1; yyDayNumber = yypvt[-1].Number; } break; case 19: # line 194 "getdate.y" { yyDayOrdinal = yypvt[-1].Number; yyDayNumber = yypvt[-0].Number; } break; case 20: # line 200 "getdate.y" { yyMonth = yypvt[-2].Number; yyDay = yypvt[-0].Number; } break; case 21: # line 204 "getdate.y" { yyMonth = yypvt[-4].Number; yyDay = yypvt[-2].Number; yyYear = yypvt[-0].Number; } break; case 22: # line 209 "getdate.y" { /* ISO 8601 format. yyyy-mm-dd. */ yyYear = yypvt[-2].Number; yyMonth = -yypvt[-1].Number; yyDay = -yypvt[-0].Number; } break; case 23: # line 215 "getdate.y" { /* e.g. 17-JUN-1992. */ yyDay = yypvt[-2].Number; yyMonth = yypvt[-1].Number; yyYear = -yypvt[-0].Number; } break; case 24: # line 221 "getdate.y" { yyMonth = yypvt[-1].Number; yyDay = yypvt[-0].Number; } break; case 25: # line 225 "getdate.y" { yyMonth = yypvt[-3].Number; yyDay = yypvt[-2].Number; yyYear = yypvt[-0].Number; } break; case 26: # line 230 "getdate.y" { yyMonth = yypvt[-0].Number; yyDay = yypvt[-1].Number; } break; case 27: # line 234 "getdate.y" { yyMonth = yypvt[-1].Number; yyDay = yypvt[-2].Number; yyYear = yypvt[-0].Number; } break; case 28: # line 241 "getdate.y" { yyRelSeconds = -yyRelSeconds; yyRelMonth = -yyRelMonth; } break; case 30: # line 248 "getdate.y" { yyRelSeconds += yypvt[-1].Number * yypvt[-0].Number * 60L; } break; case 31: # line 251 "getdate.y" { yyRelSeconds += yypvt[-1].Number * yypvt[-0].Number * 60L; } break; case 32: # line 254 "getdate.y" { yyRelSeconds += yypvt[-0].Number * 60L; } break; case 33: # line 257 "getdate.y" { yyRelSeconds += yypvt[-1].Number; } break; case 34: # line 260 "getdate.y" { yyRelSeconds += yypvt[-1].Number; } break; case 35: # line 263 "getdate.y" { yyRelSeconds++; } break; case 36: # line 266 "getdate.y" { yyRelMonth += yypvt[-1].Number * yypvt[-0].Number; } break; case 37: # line 269 "getdate.y" { yyRelMonth += yypvt[-1].Number * yypvt[-0].Number; } break; case 38: # line 272 "getdate.y" { yyRelMonth += yypvt[-0].Number; } break; case 39: # line 277 "getdate.y" { if (yyHaveTime && yyHaveDate && !yyHaveRel) yyYear = yypvt[-0].Number; else { if(yypvt[-0].Number>10000) { yyHaveDate++; yyDay= (yypvt[-0].Number)%100; yyMonth= (yypvt[-0].Number/100)%100; yyYear = yypvt[-0].Number/10000; } else { yyHaveTime++; if (yypvt[-0].Number < 100) { yyHour = yypvt[-0].Number; yyMinutes = 0; } else { yyHour = yypvt[-0].Number / 100; yyMinutes = yypvt[-0].Number % 100; } yySeconds = 0; yyMeridian = MER24; } } } break; case 40: # line 304 "getdate.y" { yyval.Meridian = MER24; } break; case 41: # line 307 "getdate.y" { yyval.Meridian = yypvt[-0].Meridian; } break; } goto yystack; /* stack new state and value */ }