/* A Bison parser, made from getdate.y with Bison version GNU Bison version 1.22 */ #define YYBISON 1 /* Identify Bison output. */ #define tAGO 258 #define tDAY 259 #define tDAYZONE 260 #define tID 261 #define tMERIDIAN 262 #define tMINUTE_UNIT 263 #define tMONTH 264 #define tMONTH_UNIT 265 #define tSEC_UNIT 266 #define tSNUMBER 267 #define tUNUMBER 268 #define tZONE 269 #define tDST 270 #line 1 "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 */ #ifdef HAVE_CONFIG_H #include #ifdef FORCE_ALLOCA_H #include #endif #endif /* Since the code of getdate.y is not included in the Emacs executable itself, there is no need to #define static in this file. Even if the code were included in the Emacs executable, it probably wouldn't do any harm to #undef it here; this will only cause problems if we try to write to a static variable, which I don't think this code needs to do. */ #ifdef emacs #undef static #endif #include #include #if defined (vms) #include #include #else #include #ifdef TIME_WITH_SYS_TIME #include #include #else #ifdef HAVE_SYS_TIME_H #include #else #include #endif #endif #ifdef timezone #undef timezone /* needed for sgi */ #endif #if defined (HAVE_SYS_TIMEB_H) #include #else /* get_date uses the obsolete `struct timeb' in its interface! FIXME. Since some systems don't have it, we define it here; callers must do likewise. */ struct timeb { time_t time; /* Seconds since the epoch */ unsigned short millitm; /* Field not used */ short timezone; /* Minutes west of GMT */ short dstflag; /* Field not used */ }; #endif /* defined (HAVE_SYS_TIMEB_H) */ #endif /* defined (vms) */ #if defined (STDC_HEADERS) || defined (USG) #include #endif /* Some old versions of bison generate parsers that use bcopy. That loses on systems that don't provide the function, so we have to redefine it here. */ #if !defined (HAVE_BCOPY) && defined (HAVE_MEMCPY) && !defined (bcopy) #define bcopy(from, to, len) memcpy ((to), (from), (len)) #endif extern struct tm *gmtime (); extern struct tm *localtime (); #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) #define MAX_BUFF_LEN 128 /* size of buffer to read the date into */ /* ** An entry in the lexical lookup table. */ typedef struct _TABLE { const 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 155 "getdate.y" typedef union { time_t Number; enum _MERIDIAN Meridian; } YYSTYPE; #ifndef YYLTYPE typedef struct yyltype { int timestamp; int first_line; int first_column; int last_line; int last_column; char *text; } yyltype; #define YYLTYPE yyltype #endif #include #ifndef __cplusplus #ifndef __STDC__ #define const #endif #endif #define YYFINAL 52 #define YYFLAG -32768 #define YYNTBASE 19 #define YYTRANSLATE(x) ((unsigned)(x) <= 270 ? yytranslate[x] : 29) static const char yytranslate[] = { 0, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 17, 2, 2, 18, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 16, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 }; #if YYDEBUG != 0 static const short yyprhs[] = { 0, 0, 1, 4, 6, 8, 10, 12, 14, 16, 19, 24, 29, 36, 43, 45, 47, 50, 52, 55, 58, 62, 68, 72, 76, 79, 84, 87, 91, 94, 96, 99, 102, 104, 107, 110, 112, 115, 118, 120, 122, 123 }; static const short yyrhs[] = { -1, 19, 20, 0, 21, 0, 22, 0, 24, 0, 23, 0, 25, 0, 27, 0, 13, 7, 0, 13, 16, 13, 28, 0, 13, 16, 13, 12, 0, 13, 16, 13, 16, 13, 28, 0, 13, 16, 13, 16, 13, 12, 0, 14, 0, 5, 0, 14, 15, 0, 4, 0, 4, 17, 0, 13, 4, 0, 13, 18, 13, 0, 13, 18, 13, 18, 13, 0, 13, 12, 12, 0, 13, 9, 12, 0, 9, 13, 0, 9, 13, 17, 13, 0, 13, 9, 0, 13, 9, 13, 0, 26, 3, 0, 26, 0, 13, 8, 0, 12, 8, 0, 8, 0, 12, 11, 0, 13, 11, 0, 11, 0, 12, 10, 0, 13, 10, 0, 10, 0, 13, 0, 0, 7, 0 }; #endif #if YYDEBUG != 0 static const short yyrline[] = { 0, 169, 170, 173, 176, 179, 182, 185, 188, 191, 197, 203, 210, 216, 226, 230, 234, 241, 245, 249, 255, 259, 264, 270, 276, 280, 285, 289, 296, 300, 303, 306, 309, 312, 315, 318, 321, 324, 327, 332, 359, 362 }; static const char * const yytname[] = { "$","error","$illegal.","tAGO","tDAY", "tDAYZONE","tID","tMERIDIAN","tMINUTE_UNIT","tMONTH","tMONTH_UNIT","tSEC_UNIT", "tSNUMBER","tUNUMBER","tZONE","tDST","':'","','","'/'","spec","item","time", "zone","day","date","rel","relunit","number","o_merid","" }; #endif static const short yyr1[] = { 0, 19, 19, 20, 20, 20, 20, 20, 20, 21, 21, 21, 21, 21, 22, 22, 22, 23, 23, 23, 24, 24, 24, 24, 24, 24, 24, 24, 25, 25, 26, 26, 26, 26, 26, 26, 26, 26, 26, 27, 28, 28 }; static const 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 }; static const short yydefact[] = { 1, 0, 17, 15, 32, 0, 38, 35, 0, 39, 14, 2, 3, 4, 6, 5, 7, 29, 8, 18, 24, 31, 36, 33, 19, 9, 30, 26, 37, 34, 0, 0, 0, 16, 28, 0, 23, 27, 22, 40, 20, 25, 41, 11, 0, 10, 0, 40, 21, 13, 12, 0, 0 }; static const short yydefgoto[] = { 1, 11, 12, 13, 14, 15, 16, 17, 18, 45 }; static const short yypact[] = {-32768, 0, -1,-32768,-32768, 4,-32768,-32768, 25, 11, -8, -32768,-32768,-32768,-32768,-32768,-32768, 21,-32768,-32768, 9, -32768,-32768,-32768,-32768,-32768,-32768, -10,-32768,-32768, 16, 19, 24,-32768,-32768, 26,-32768,-32768,-32768, 18, 13, -32768,-32768,-32768, 27,-32768, 28, -6,-32768,-32768,-32768, 38,-32768 }; static const short yypgoto[] = {-32768, -32768,-32768,-32768,-32768,-32768,-32768,-32768,-32768, -5 }; #define YYLAST 42 static const short yytable[] = { 51, 42, 36, 37, 2, 3, 49, 33, 4, 5, 6, 7, 8, 9, 10, 24, 19, 20, 25, 26, 27, 28, 29, 30, 34, 42, 35, 31, 38, 32, 43, 46, 39, 21, 44, 22, 23, 40, 52, 41, 47, 48, 50 }; static const short yycheck[] = { 0, 7, 12, 13, 4, 5, 12, 15, 8, 9, 10, 11, 12, 13, 14, 4, 17, 13, 7, 8, 9, 10, 11, 12, 3, 7, 17, 16, 12, 18, 12, 18, 13, 8, 16, 10, 11, 13, 0, 13, 13, 13, 47 }; /* -*-C-*- Note some compilers choke on comments on `#line' lines. */ #line 3 "/mit/gnu/share/bison/bison.simple" /* Skeleton output parser for bison, Copyright (C) 1984, 1989, 1990 Bob Corbett and Richard Stallman This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 1, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ #ifndef alloca #ifdef __GNUC__ #define alloca __builtin_alloca #else /* not GNU C. */ #if (!defined (__STDC__) && defined (sparc)) || defined (__sparc__) || defined (__sparc) || defined (__sgi) #include #else /* not sparc */ #if defined (MSDOS) && !defined (__TURBOC__) #include #else /* not MSDOS, or __TURBOC__ */ #if defined(_AIX) #include #pragma alloca #else /* not MSDOS, __TURBOC__, or _AIX */ #endif /* not _AIX */ #endif /* not MSDOS, or __TURBOC__ */ #endif /* not sparc. */ #endif /* not GNU C. */ #endif /* alloca not defined. */ /* This is the parser code that is written into each bison parser when the %semantic_parser declaration is not specified in the grammar. It was written by Richard Stallman by simplifying the hairy parser used when %semantic_parser is specified. */ /* Note: there must be only one dollar sign in this file. It is replaced by the list of actions, each action as one case of the switch. */ #define yyerrok (yyerrstatus = 0) #define yyclearin (yychar = YYEMPTY) #define YYEMPTY -2 #define YYEOF 0 #define YYACCEPT return(0) #define YYABORT return(1) #define YYERROR goto yyerrlab1 /* Like YYERROR except do call yyerror. This remains here temporarily to ease the transition to the new meaning of YYERROR, for GCC. Once GCC version 2 has supplanted version 1, this can go. */ #define YYFAIL goto yyerrlab #define YYRECOVERING() (!!yyerrstatus) #define YYBACKUP(token, value) \ do \ if (yychar == YYEMPTY && yylen == 1) \ { yychar = (token), yylval = (value); \ yychar1 = YYTRANSLATE (yychar); \ YYPOPSTACK; \ goto yybackup; \ } \ else \ { yyerror ("syntax error: cannot back up"); YYERROR; } \ while (0) #define YYTERROR 1 #define YYERRCODE 256 #ifndef YYPURE #define YYLEX yylex() #endif #ifdef YYPURE #ifdef YYLSP_NEEDED #define YYLEX yylex(&yylval, &yylloc) #else #define YYLEX yylex(&yylval) #endif #endif /* If nonreentrant, generate the variables here */ #ifndef YYPURE int yychar; /* the lookahead symbol */ YYSTYPE yylval; /* the semantic value of the */ /* lookahead symbol */ #ifdef YYLSP_NEEDED YYLTYPE yylloc; /* location data for the lookahead */ /* symbol */ #endif int yynerrs; /* number of parse errors so far */ #endif /* not YYPURE */ #if YYDEBUG != 0 int yydebug; /* nonzero means print parse trace */ /* Since this is uninitialized, it does not stop multiple parsers from coexisting. */ #endif /* YYINITDEPTH indicates the initial size of the parser's stacks */ #ifndef YYINITDEPTH #define YYINITDEPTH 200 #endif /* YYMAXDEPTH is the maximum size the stacks can grow to (effective only if the built-in stack extension method is used). */ #if YYMAXDEPTH == 0 #undef YYMAXDEPTH #endif #ifndef YYMAXDEPTH #define YYMAXDEPTH 10000 #endif /* Prevent warning if -Wstrict-prototypes. */ #ifdef __GNUC__ int yyparse (void); #endif #if __GNUC__ > 1 /* GNU C and GNU C++ define this. */ #define __yy_bcopy(FROM,TO,COUNT) __builtin_memcpy(TO,FROM,COUNT) #else /* not GNU C or C++ */ #ifndef __cplusplus /* This is the most reliable way to avoid incompatibilities in available built-in functions on various systems. */ static void __yy_bcopy (from, to, count) char *from; char *to; int count; { register char *f = from; register char *t = to; register int i = count; while (i-- > 0) *t++ = *f++; } #else /* __cplusplus */ /* This is the most reliable way to avoid incompatibilities in available built-in functions on various systems. */ static void __yy_bcopy (char *from, char *to, int count) { register char *f = from; register char *t = to; register int i = count; while (i-- > 0) *t++ = *f++; } #endif #endif #line 184 "/mit/gnu/share/bison/bison.simple" int yyparse() { register int yystate; register int yyn; register short *yyssp; register YYSTYPE *yyvsp; int yyerrstatus; /* number of tokens to shift before error messages enabled */ int yychar1 = 0; /* lookahead token as an internal (translated) token number */ short yyssa[YYINITDEPTH]; /* the state stack */ YYSTYPE yyvsa[YYINITDEPTH]; /* the semantic value stack */ short *yyss = yyssa; /* refer to the stacks thru separate pointers */ YYSTYPE *yyvs = yyvsa; /* to allow yyoverflow to reallocate them elsewhere */ #ifdef YYLSP_NEEDED YYLTYPE yylsa[YYINITDEPTH]; /* the location stack */ YYLTYPE *yyls = yylsa; YYLTYPE *yylsp; #define YYPOPSTACK (yyvsp--, yyssp--, yylsp--) #else #define YYPOPSTACK (yyvsp--, yyssp--) #endif int yystacksize = YYINITDEPTH; #ifdef YYPURE int yychar; YYSTYPE yylval; int yynerrs; #ifdef YYLSP_NEEDED YYLTYPE yylloc; #endif #endif YYSTYPE yyval; /* the variable used to return */ /* semantic values from the action */ /* routines */ int yylen; #if YYDEBUG != 0 if (yydebug) fprintf(stderr, "Starting parse\n"); #endif yystate = 0; yyerrstatus = 0; yynerrs = 0; yychar = YYEMPTY; /* Cause a token to be read. */ /* Initialize stack pointers. Waste one element of value and location stack so that they stay on the same level as the state stack. The wasted elements are never initialized. */ yyssp = yyss - 1; yyvsp = yyvs; #ifdef YYLSP_NEEDED yylsp = yyls; #endif /* Push a new state, which is found in yystate . */ /* In all cases, when you get here, the value and location stacks have just been pushed. so pushing a state here evens the stacks. */ yynewstate: *++yyssp = yystate; if (yyssp >= yyss + yystacksize - 1) { /* Give user a chance to reallocate the stack */ /* Use copies of these so that the &'s don't force the real ones into memory. */ YYSTYPE *yyvs1 = yyvs; short *yyss1 = yyss; #ifdef YYLSP_NEEDED YYLTYPE *yyls1 = yyls; #endif /* Get the current used size of the three stacks, in elements. */ int size = yyssp - yyss + 1; #ifdef yyoverflow /* Each stack pointer address is followed by the size of the data in use in that stack, in bytes. */ #ifdef YYLSP_NEEDED /* This used to be a conditional around just the two extra args, but that might be undefined if yyoverflow is a macro. */ yyoverflow("parser stack overflow", &yyss1, size * sizeof (*yyssp), &yyvs1, size * sizeof (*yyvsp), &yyls1, size * sizeof (*yylsp), &yystacksize); #else yyoverflow("parser stack overflow", &yyss1, size * sizeof (*yyssp), &yyvs1, size * sizeof (*yyvsp), &yystacksize); #endif yyss = yyss1; yyvs = yyvs1; #ifdef YYLSP_NEEDED yyls = yyls1; #endif #else /* no yyoverflow */ /* Extend the stack our own way. */ if (yystacksize >= YYMAXDEPTH) { yyerror("parser stack overflow"); return 2; } yystacksize *= 2; if (yystacksize > YYMAXDEPTH) yystacksize = YYMAXDEPTH; yyss = (short *) alloca (yystacksize * sizeof (*yyssp)); __yy_bcopy ((char *)yyss1, (char *)yyss, size * sizeof (*yyssp)); yyvs = (YYSTYPE *) alloca (yystacksize * sizeof (*yyvsp)); __yy_bcopy ((char *)yyvs1, (char *)yyvs, size * sizeof (*yyvsp)); #ifdef YYLSP_NEEDED yyls = (YYLTYPE *) alloca (yystacksize * sizeof (*yylsp)); __yy_bcopy ((char *)yyls1, (char *)yyls, size * sizeof (*yylsp)); #endif #endif /* no yyoverflow */ yyssp = yyss + size - 1; yyvsp = yyvs + size - 1; #ifdef YYLSP_NEEDED yylsp = yyls + size - 1; #endif #if YYDEBUG != 0 if (yydebug) fprintf(stderr, "Stack size increased to %d\n", yystacksize); #endif if (yyssp >= yyss + yystacksize - 1) YYABORT; } #if YYDEBUG != 0 if (yydebug) fprintf(stderr, "Entering state %d\n", yystate); #endif goto yybackup; yybackup: /* Do appropriate processing given the current state. */ /* Read a lookahead token if we need one and don't already have one. */ /* yyresume: */ /* First try to decide what to do without reference to lookahead token. */ yyn = yypact[yystate]; if (yyn == YYFLAG) goto yydefault; /* Not known => get a lookahead token if don't already have one. */ /* yychar is either YYEMPTY or YYEOF or a valid token in external form. */ if (yychar == YYEMPTY) { #if YYDEBUG != 0 if (yydebug) fprintf(stderr, "Reading a token: "); #endif yychar = YYLEX; } /* Convert token to internal form (in yychar1) for indexing tables with */ if (yychar <= 0) /* This means end of input. */ { yychar1 = 0; yychar = YYEOF; /* Don't call YYLEX any more */ #if YYDEBUG != 0 if (yydebug) fprintf(stderr, "Now at end of input.\n"); #endif } else { yychar1 = YYTRANSLATE(yychar); #if YYDEBUG != 0 if (yydebug) { fprintf (stderr, "Next token is %d (%s", yychar, yytname[yychar1]); /* Give the individual parser a way to print the precise meaning of a token, for further debugging info. */ #ifdef YYPRINT YYPRINT (stderr, yychar, yylval); #endif fprintf (stderr, ")\n"); } #endif } yyn += yychar1; if (yyn < 0 || yyn > YYLAST || yycheck[yyn] != yychar1) goto yydefault; yyn = yytable[yyn]; /* yyn is what to do for this token type in this state. Negative => reduce, -yyn is rule number. Positive => shift, yyn is new state. New state is final state => don't bother to shift, just return success. 0, or most negative number => error. */ if (yyn < 0) { if (yyn == YYFLAG) goto yyerrlab; yyn = -yyn; goto yyreduce; } else if (yyn == 0) goto yyerrlab; if (yyn == YYFINAL) YYACCEPT; /* Shift the lookahead token. */ #if YYDEBUG != 0 if (yydebug) fprintf(stderr, "Shifting token %d (%s), ", yychar, yytname[yychar1]); #endif /* Discard the token being shifted unless it is eof. */ if (yychar != YYEOF) yychar = YYEMPTY; *++yyvsp = yylval; #ifdef YYLSP_NEEDED *++yylsp = yylloc; #endif /* count tokens shifted since error; after three, turn off error status. */ if (yyerrstatus) yyerrstatus--; yystate = yyn; goto yynewstate; /* Do the default action for the current state. */ yydefault: yyn = yydefact[yystate]; if (yyn == 0) goto yyerrlab; /* Do a reduction. yyn is the number of a rule to reduce with. */ yyreduce: yylen = yyr2[yyn]; if (yylen > 0) yyval = yyvsp[1-yylen]; /* implement default value of the action */ #if YYDEBUG != 0 if (yydebug) { int i; fprintf (stderr, "Reducing via rule %d (line %d), ", yyn, yyrline[yyn]); /* Print the symbols being reduced, and their result. */ for (i = yyprhs[yyn]; yyrhs[i] > 0; i++) fprintf (stderr, "%s ", yytname[yyrhs[i]]); fprintf (stderr, " -> %s\n", yytname[yyr1[yyn]]); } #endif switch (yyn) { case 3: #line 173 "getdate.y" { yyHaveTime++; ; break;} case 4: #line 176 "getdate.y" { yyHaveZone++; ; break;} case 5: #line 179 "getdate.y" { yyHaveDate++; ; break;} case 6: #line 182 "getdate.y" { yyHaveDay++; ; break;} case 7: #line 185 "getdate.y" { yyHaveRel++; ; break;} case 9: #line 191 "getdate.y" { yyHour = yyvsp[-1].Number; yyMinutes = 0; yySeconds = 0; yyMeridian = yyvsp[0].Meridian; ; break;} case 10: #line 197 "getdate.y" { yyHour = yyvsp[-3].Number; yyMinutes = yyvsp[-1].Number; yySeconds = 0; yyMeridian = yyvsp[0].Meridian; ; break;} case 11: #line 203 "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 210 "getdate.y" { yyHour = yyvsp[-5].Number; yyMinutes = yyvsp[-3].Number; yySeconds = yyvsp[-1].Number; yyMeridian = yyvsp[0].Meridian; ; break;} case 13: #line 216 "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 226 "getdate.y" { yyTimezone = yyvsp[0].Number; yyDSTmode = DSToff; ; break;} case 15: #line 230 "getdate.y" { yyTimezone = yyvsp[0].Number; yyDSTmode = DSTon; ; break;} case 16: #line 235 "getdate.y" { yyTimezone = yyvsp[-1].Number; yyDSTmode = DSTon; ; break;} case 17: #line 241 "getdate.y" { yyDayOrdinal = 1; yyDayNumber = yyvsp[0].Number; ; break;} case 18: #line 245 "getdate.y" { yyDayOrdinal = 1; yyDayNumber = yyvsp[-1].Number; ; break;} case 19: #line 249 "getdate.y" { yyDayOrdinal = yyvsp[-1].Number; yyDayNumber = yyvsp[0].Number; ; break;} case 20: #line 255 "getdate.y" { yyMonth = yyvsp[-2].Number; yyDay = yyvsp[0].Number; ; break;} case 21: #line 259 "getdate.y" { yyMonth = yyvsp[-4].Number; yyDay = yyvsp[-2].Number; yyYear = yyvsp[0].Number; ; break;} case 22: #line 264 "getdate.y" { /* ISO 8601 format. yyyy-mm-dd. */ yyYear = yyvsp[-2].Number; yyMonth = -yyvsp[-1].Number; yyDay = -yyvsp[0].Number; ; break;} case 23: #line 270 "getdate.y" { /* e.g. 17-JUN-1992. */ yyDay = yyvsp[-2].Number; yyMonth = yyvsp[-1].Number; yyYear = -yyvsp[0].Number; ; break;} case 24: #line 276 "getdate.y" { yyMonth = yyvsp[-1].Number; yyDay = yyvsp[0].Number; ; break;} case 25: #line 280 "getdate.y" { yyMonth = yyvsp[-3].Number; yyDay = yyvsp[-2].Number; yyYear = yyvsp[0].Number; ; break;} case 26: #line 285 "getdate.y" { yyMonth = yyvsp[0].Number; yyDay = yyvsp[-1].Number; ; break;} case 27: #line 289 "getdate.y" { yyMonth = yyvsp[-1].Number; yyDay = yyvsp[-2].Number; yyYear = yyvsp[0].Number; ; break;} case 28: #line 296 "getdate.y" { yyRelSeconds = -yyRelSeconds; yyRelMonth = -yyRelMonth; ; break;} case 30: #line 303 "getdate.y" { yyRelSeconds += yyvsp[-1].Number * yyvsp[0].Number * 60L; ; break;} case 31: #line 306 "getdate.y" { yyRelSeconds += yyvsp[-1].Number * yyvsp[0].Number * 60L; ; break;} case 32: #line 309 "getdate.y" { yyRelSeconds += yyvsp[0].Number * 60L; ; break;} case 33: #line 312 "getdate.y" { yyRelSeconds += yyvsp[-1].Number; ; break;} case 34: #line 315 "getdate.y" { yyRelSeconds += yyvsp[-1].Number; ; break;} case 35: #line 318 "getdate.y" { yyRelSeconds++; ; break;} case 36: #line 321 "getdate.y" { yyRelMonth += yyvsp[-1].Number * yyvsp[0].Number; ; break;} case 37: #line 324 "getdate.y" { yyRelMonth += yyvsp[-1].Number * yyvsp[0].Number; ; break;} case 38: #line 327 "getdate.y" { yyRelMonth += yyvsp[0].Number; ; break;} case 39: #line 332 "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 359 "getdate.y" { yyval.Meridian = MER24; ; break;} case 41: #line 362 "getdate.y" { yyval.Meridian = yyvsp[0].Meridian; ; break;} } /* the action file gets copied in in place of this dollarsign */ #line 465 "/mit/gnu/share/bison/bison.simple" yyvsp -= yylen; yyssp -= yylen; #ifdef YYLSP_NEEDED yylsp -= yylen; #endif #if YYDEBUG != 0 if (yydebug) { short *ssp1 = yyss - 1; fprintf (stderr, "state stack now"); while (ssp1 != yyssp) fprintf (stderr, " %d", *++ssp1); fprintf (stderr, "\n"); } #endif *++yyvsp = yyval; #ifdef YYLSP_NEEDED yylsp++; if (yylen == 0) { yylsp->first_line = yylloc.first_line; yylsp->first_column = yylloc.first_column; yylsp->last_line = (yylsp-1)->last_line; yylsp->last_column = (yylsp-1)->last_column; yylsp->text = 0; } else { yylsp->last_line = (yylsp+yylen-1)->last_line; yylsp->last_column = (yylsp+yylen-1)->last_column; } #endif /* Now "shift" the result of the reduction. Determine what state that goes to, based on the state we popped back to and the rule number reduced by. */ yyn = yyr1[yyn]; yystate = yypgoto[yyn - YYNTBASE] + *yyssp; if (yystate >= 0 && yystate <= YYLAST && yycheck[yystate] == *yyssp) yystate = yytable[yystate]; else yystate = yydefgoto[yyn - YYNTBASE]; goto yynewstate; yyerrlab: /* here on detecting error */ if (! yyerrstatus) /* If not already recovering from an error, report this error. */ { ++yynerrs; #ifdef YYERROR_VERBOSE yyn = yypact[yystate]; if (yyn > YYFLAG && yyn < YYLAST) { int size = 0; char *msg; int x, count; count = 0; /* Start X at -yyn if nec to avoid negative indexes in yycheck. */ for (x = (yyn < 0 ? -yyn : 0); x < (sizeof(yytname) / sizeof(char *)); x++) if (yycheck[x + yyn] == x) size += strlen(yytname[x]) + 15, count++; msg = (char *) malloc(size + 15); if (msg != 0) { strcpy(msg, "parse error"); if (count < 5) { count = 0; for (x = (yyn < 0 ? -yyn : 0); x < (sizeof(yytname) / sizeof(char *)); x++) if (yycheck[x + yyn] == x) { strcat(msg, count == 0 ? ", expecting `" : " or `"); strcat(msg, yytname[x]); strcat(msg, "'"); count++; } } yyerror(msg); free(msg); } else yyerror ("parse error; also virtual memory exceeded"); } else #endif /* YYERROR_VERBOSE */ yyerror("parse error"); } goto yyerrlab1; yyerrlab1: /* here on error raised explicitly by an action */ if (yyerrstatus == 3) { /* if just tried and failed to reuse lookahead token after an error, discard it. */ /* return failure if at end of input */ if (yychar == YYEOF) YYABORT; #if YYDEBUG != 0 if (yydebug) fprintf(stderr, "Discarding token %d (%s).\n", yychar, yytname[yychar1]); #endif yychar = YYEMPTY; } /* Else will try to reuse lookahead token after shifting the error token. */ yyerrstatus = 3; /* Each real token shifted decrements this */ goto yyerrhandle; yyerrdefault: /* current state does not do anything special for the error token. */ #if 0 /* This is wrong; only states that explicitly want error tokens should shift them. */ yyn = yydefact[yystate]; /* If its default is to accept any token, ok. Otherwise pop it.*/ if (yyn) goto yydefault; #endif yyerrpop: /* pop the current state because it cannot handle the error token */ if (yyssp == yyss) YYABORT; yyvsp--; yystate = *--yyssp; #ifdef YYLSP_NEEDED yylsp--; #endif #if YYDEBUG != 0 if (yydebug) { short *ssp1 = yyss - 1; fprintf (stderr, "Error: state stack now"); while (ssp1 != yyssp) fprintf (stderr, " %d", *++ssp1); fprintf (stderr, "\n"); } #endif yyerrhandle: yyn = yypact[yystate]; if (yyn == YYFLAG) goto yyerrdefault; yyn += YYTERROR; if (yyn < 0 || yyn > YYLAST || yycheck[yyn] != YYTERROR) goto yyerrdefault; yyn = yytable[yyn]; if (yyn < 0) { if (yyn == YYFLAG) goto yyerrpop; yyn = -yyn; goto yyreduce; } else if (yyn == 0) goto yyerrpop; if (yyn == YYFINAL) YYACCEPT; #if YYDEBUG != 0 if (yydebug) fprintf(stderr, "Shifting error token, "); #endif *++yyvsp = yylval; #ifdef YYLSP_NEEDED *++yylsp = yylloc; #endif yystate = yyn; goto yynewstate; } #line 367 "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", 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 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 */ { "mesz", 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 Standard, 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 (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; 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 */ } 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 const 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); long 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, now) char *p; struct timeb *now; { struct tm *tm, gmt; struct timeb ftz; time_t Start; time_t tod; yyInput = p; if (now == NULL) { now = &ftz; (void)time (&ftz.time); if (! (tm = gmtime (&ftz.time))) return -1; gmt = *tm; /* Make a copy, in case localtime modifies *tm. */ if (! (tm = localtime (&ftz.time))) return -1; ftz.timezone = difftm (&gmt, tm) / 60; if (tm->tm_isdst) ftz.timezone += 60; } tm = localtime (&now->time); yyYear = tm->tm_year; yyMonth = tm->tm_mon + 1; yyDay = tm->tm_mday; yyTimezone = now->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->time; 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[MAX_BUFF_LEN + 1]; time_t d; (void)printf ("Enter date, or blank line to exit.\n\t> "); (void)fflush (stdout); buff[MAX_BUFF_LEN] = 0; while (fgets (buff, MAX_BUFF_LEN, stdin) && buff[0]) { d = get_date (buff, (struct timeb *)NULL); 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) */