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getdate.c
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1992-08-02
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1,793 lines
/* A Bison parser, made from getdate.y */
#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"
/* $Revision: 2.1 $
**
** Originally written by Steven M. Bellovin <smb@research.att.com> while
** at the University of North Carolina at Chapel Hill. Later tweaked by
** a couple of people on Usenet. Completely overhauled by Rich $alz
** <rsalz@bbn.com> and Jim Berets <jberets@bbn.com> in August, 1990;
** send any email to Rich.
**
** This grammar has eight shift/reduce conflicts.
**
** This code is in the public domain and has no copyright.
*/
/* SUPPRESS 287 on yaccpar_sccsid *//* Unusd static variable */
/* SUPPRESS 288 on yyerrlab *//* Label unused */
#ifdef __GNUC__
#define alloca __builtin_alloca
#else
#ifdef sparc
#include <alloca.h>
#else
#ifdef _AIX /* for Bison */
#pragma alloca
#else
char *alloca ();
#endif
#endif
#endif
#include <stdio.h>
#include <ctype.h>
#if defined(vms)
#include <types.h>
#include <time.h>
#else
#include <sys/types.h>
#if defined(USG) || !defined(HAVE_FTIME)
/*
** If you need to do a tzset() call to set the
** timezone, and don't have ftime().
*/
struct timeb {
time_t time; /* Seconds since the epoch */
unsigned short millitm; /* Field not used */
short timezone;
short dstflag; /* Field not used */
};
#else
#include <sys/timeb.h>
#endif /* defined(USG) || defined(FTIME_MISSING) */
#if defined(BSD4_2) || defined(BSD4_1C)
#include <sys/time.h>
#else
#include <time.h>
#endif /* defined(BSD4_2) */
#endif /* defined(vms) */
#if defined (STDC_HEADERS) || defined (USG)
#include <string.h>
#endif
#if sgi
#undef timezone
#endif
extern struct tm *localtime();
#define yyparse getdate_yyparse
#define yylex getdate_yylex
#define yyerror getdate_yyerror
#if !defined(lint) && !defined(SABER)
static char RCS[] =
"$Header: str2date.y,v 2.1 90/09/06 08:15:06 cronan Exp $";
#endif /* !defined(lint) && !defined(SABER) */
#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 138 "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 <stdio.h>
#ifndef __STDC__
#define const
#endif
#define YYFINAL 51
#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
};
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, 75, 80, 83, 87, 90, 92, 95,
98, 100, 103, 106, 108, 111, 114, 116, 118, 119
};
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, 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
};
#if YYDEBUG != 0
static const short yyrline[] = { 0,
152, 153, 156, 159, 162, 165, 168, 171, 174, 180,
186, 193, 199, 209, 213, 217, 224, 228, 232, 238,
242, 247, 253, 257, 262, 266, 273, 277, 280, 283,
286, 289, 292, 295, 298, 301, 304, 309, 337, 340
};
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, 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, 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, 31, 0, 37, 34, 0, 38, 14,
2, 3, 4, 6, 5, 7, 28, 8, 18, 23,
30, 35, 32, 19, 9, 29, 25, 36, 33, 0,
0, 0, 16, 27, 0, 26, 22, 39, 20, 24,
40, 11, 0, 10, 0, 39, 21, 13, 12, 0,
0
};
static const short yydefgoto[] = { 1,
11, 12, 13, 14, 15, 16, 17, 18, 44
};
static const short yypact[] = {-32768,
0,- 15,-32768,-32768,- 10,-32768,-32768, 25, 11,- 8,
-32768,-32768,-32768,-32768,-32768,-32768, 13,-32768,-32768, 7,
-32768,-32768,-32768,-32768,-32768,-32768, 4,-32768,-32768, 14,
15, 19,-32768,-32768, 24,-32768,-32768, 18, 20,-32768,
-32768,-32768, 26,-32768, 27,- 6,-32768,-32768,-32768, 31,
-32768
};
static const short yypgoto[] = {-32768,
-32768,-32768,-32768,-32768,-32768,-32768,-32768,-32768,- 5
};
#define YYLAST 41
static const short yytable[] = { 50,
41, 19, 20, 2, 3, 48, 33, 4, 5, 6,
7, 8, 9, 10, 24, 34, 36, 25, 26, 27,
28, 29, 30, 35, 41, 37, 31, 38, 32, 42,
51, 39, 21, 43, 22, 23, 40, 45, 46, 47,
49
};
static const short yycheck[] = { 0,
7, 17, 13, 4, 5, 12, 15, 8, 9, 10,
11, 12, 13, 14, 4, 3, 13, 7, 8, 9,
10, 11, 12, 17, 7, 12, 16, 13, 18, 12,
0, 13, 8, 16, 10, 11, 13, 18, 13, 13,
46
};
/* -*-C-*- Note some compilers choke on comments on `#line' lines. */
#line 3 "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__)
#include <alloca.h>
#else /* Not sparc */
#ifdef MSDOS
#include <malloc.h>
#endif /* MSDOS */
#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
#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
#line 160 "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; /* 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 *yyls = yylsa;
YYLTYPE *yylsp;
YYLTYPE yylsa[YYINITDEPTH]; /* the location stack */
#define YYPOPSTACK (yyvsp--, yysp--, yylsp--)
#else
#define YYPOPSTACK (yyvsp--, yysp--)
#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. */
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. */
yyoverflow("parser stack overflow",
&yyss1, size * sizeof (*yyssp),
&yyvs1, size * sizeof (*yyvsp),
#ifdef YYLSP_NEEDED
&yyls1, size * sizeof (*yylsp),
#endif
&yystacksize);
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
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)\n", yychar, yytname[yychar1]);
#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];
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 symboles 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 156 "getdate.y"
{
yyHaveTime++;
;
break;}
case 4:
#line 159 "getdate.y"
{
yyHaveZone++;
;
break;}
case 5:
#line 162 "getdate.y"
{
yyHaveDate++;
;
break;}
case 6:
#line 165 "getdate.y"
{
yyHaveDay++;
;
break;}
case 7:
#line 168 "getdate.y"
{
yyHaveRel++;
;
break;}
case 9:
#line 174 "getdate.y"
{
yyHour = yyvsp[-1].Number;
yyMinutes = 0;
yySeconds = 0;
yyMeridian = yyvsp[0].Meridian;
;
break;}
case 10:
#line 180 "getdate.y"
{
yyHour = yyvsp[-3].Number;
yyMinutes = yyvsp[-1].Number;
yySeconds = 0;
yyMeridian = yyvsp[0].Meridian;
;
break;}
case 11:
#line 186 "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 193 "getdate.y"
{
yyHour = yyvsp[-5].Number;
yyMinutes = yyvsp[-3].Number;
yySeconds = yyvsp[-1].Number;
yyMeridian = yyvsp[0].Meridian;
;
break;}
case 13:
#line 199 "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 209 "getdate.y"
{
yyTimezone = yyvsp[0].Number;
yyDSTmode = DSToff;
;
break;}
case 15:
#line 213 "getdate.y"
{
yyTimezone = yyvsp[0].Number;
yyDSTmode = DSTon;
;
break;}
case 16:
#line 218 "getdate.y"
{
yyTimezone = yyvsp[-1].Number;
yyDSTmode = DSTon;
;
break;}
case 17:
#line 224 "getdate.y"
{
yyDayOrdinal = 1;
yyDayNumber = yyvsp[0].Number;
;
break;}
case 18:
#line 228 "getdate.y"
{
yyDayOrdinal = 1;
yyDayNumber = yyvsp[-1].Number;
;
break;}
case 19:
#line 232 "getdate.y"
{
yyDayOrdinal = yyvsp[-1].Number;
yyDayNumber = yyvsp[0].Number;
;
break;}
case 20:
#line 238 "getdate.y"
{
yyMonth = yyvsp[-2].Number;
yyDay = yyvsp[0].Number;
;
break;}
case 21:
#line 242 "getdate.y"
{
yyMonth = yyvsp[-4].Number;
yyDay = yyvsp[-2].Number;
yyYear = yyvsp[0].Number;
;
break;}
case 22:
#line 247 "getdate.y"
{
/* ISO 8601 format. yyyy-mm-dd. */
yyYear = yyvsp[-2].Number;
yyMonth = -yyvsp[-1].Number;
yyDay = -yyvsp[0].Number;
;
break;}
case 23:
#line 253 "getdate.y"
{
yyMonth = yyvsp[-1].Number;
yyDay = yyvsp[0].Number;
;
break;}
case 24:
#line 257 "getdate.y"
{
yyMonth = yyvsp[-3].Number;
yyDay = yyvsp[-2].Number;
yyYear = yyvsp[0].Number;
;
break;}
case 25:
#line 262 "getdate.y"
{
yyMonth = yyvsp[0].Number;
yyDay = yyvsp[-1].Number;
;
break;}
case 26:
#line 266 "getdate.y"
{
yyMonth = yyvsp[-1].Number;
yyDay = yyvsp[-2].Number;
yyYear = yyvsp[0].Number;
;
break;}
case 27:
#line 273 "getdate.y"
{
yyRelSeconds = -yyRelSeconds;
yyRelMonth = -yyRelMonth;
;
break;}
case 29:
#line 280 "getdate.y"
{
yyRelSeconds += yyvsp[-1].Number * yyvsp[0].Number * 60L;
;
break;}
case 30:
#line 283 "getdate.y"
{
yyRelSeconds += yyvsp[-1].Number * yyvsp[0].Number * 60L;
;
break;}
case 31:
#line 286 "getdate.y"
{
yyRelSeconds += yyvsp[0].Number * 60L;
;
break;}
case 32:
#line 289 "getdate.y"
{
yyRelSeconds += yyvsp[-1].Number;
;
break;}
case 33:
#line 292 "getdate.y"
{
yyRelSeconds += yyvsp[-1].Number;
;
break;}
case 34:
#line 295 "getdate.y"
{
yyRelSeconds++;
;
break;}
case 35:
#line 298 "getdate.y"
{
yyRelMonth += yyvsp[-1].Number * yyvsp[0].Number;
;
break;}
case 36:
#line 301 "getdate.y"
{
yyRelMonth += yyvsp[-1].Number * yyvsp[0].Number;
;
break;}
case 37:
#line 304 "getdate.y"
{
yyRelMonth += yyvsp[0].Number;
;
break;}
case 38:
#line 309 "getdate.y"
{
if (yyHaveTime && yyHaveDate && !yyHaveRel)
yyYear = yyvsp[0].Number;
else {
if(yyvsp[0].Number>10000) {
time_t date_part;
date_part= yyvsp[0].Number/10000;
yyHaveDate++;
yyDay= (date_part)%100;
yyMonth= (date_part/100)%100;
yyYear = date_part/10000;
}
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 39:
#line 337 "getdate.y"
{
yyval.Meridian = MER24;
;
break;}
case 40:
#line 340 "getdate.y"
{
yyval.Meridian = yyvsp[0].Meridian;
;
break;}
}
/* the action file gets copied in in place of this dollarsign */
#line 423 "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;
for (x = 0; x < (sizeof(yytname) / sizeof(char *)); x++)
if (yycheck[x + yyn] == x)
size += strlen(yytname[x]) + 15, count++;
msg = (char *) xmalloc(size + 15);
strcpy(msg, "parse error");
if (count < 5)
{
count = 0;
for (x = 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
#endif /* YYERROR_VERBOSE */
yyerror("parse error");
}
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 345 "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 */
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;
}
/* 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;
}
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);
}
}
time_t
get_date(p, now)
char *p;
struct timeb *now;
{
struct tm *tm;
struct timeb ftz;
time_t Start;
time_t tod;
#if !defined(HAVE_FTIME)
extern time_t timezone;
#endif
yyInput = p;
if (now == NULL) {
now = &ftz;
#if !defined(HAVE_FTIME)
(void)time(&ftz.time);
/* Set the timezone global. */
tzset();
#if sgi
ftz.timezone = (int) _timezone / 60;
#else
ftz.timezone = (int) timezone / 60;
#endif
#else
(void)ftime(&ftz);
#endif /* HAVE_FTIME */
}
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 */
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, (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) */