From 7539e5102bb1b176218acdccf2dff8aa2a89bf6b Mon Sep 17 00:00:00 2001 From: Jim Meyering Date: Sun, 6 Nov 1994 17:40:20 +0000 Subject: [PATCH] Initial revision --- lib/posixtm.c | 978 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 978 insertions(+) create mode 100644 lib/posixtm.c diff --git a/lib/posixtm.c b/lib/posixtm.c new file mode 100644 index 0000000000..c029a16dd2 --- /dev/null +++ b/lib/posixtm.c @@ -0,0 +1,978 @@ + +/* A Bison parser, made from ./posixtm.y with Bison version GNU Bison version 1.22 + */ + +#define YYBISON 1 /* Identify Bison output. */ + +#define DIGIT 258 + +#line 19 "./posixtm.y" + + +#ifdef HAVE_CONFIG_H +#include +#endif + +/* The following block of alloca-related preprocessor directives is here + solely to allow compilation by non GNU-C compilers of the C parser + produced from this file by old versions of bison. Newer versions of + bison include a block similar to this one in bison.simple. */ + +#ifdef __GNUC__ +#define alloca __builtin_alloca +#else +#ifdef HAVE_ALLOCA_H +#include +#else +#ifdef _AIX + #pragma alloca +#else +void *alloca (); +#endif +#endif +#endif + +#include +#include + +#ifdef TM_IN_SYS_TIME +#include +#else +#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 + +#define YYDEBUG 1 + +/* Lexical analyzer's current scan position in the input string. */ +static char *curpos; + +/* The return value. */ +static struct tm t; + +time_t mktime (); + +#define zzparse posixtime_zzparse +static int zzlex (); +static int zzerror (); + +#ifndef YYLTYPE +typedef + struct zzltype + { + int timestamp; + int first_line; + int first_column; + int last_line; + int last_column; + char *text; + } + zzltype; + +#define YYLTYPE zzltype +#endif + +#ifndef YYSTYPE +#define YYSTYPE int +#endif +#include + +#ifndef __cplusplus +#ifndef __STDC__ +#define const +#endif +#endif + + + +#define YYFINAL 15 +#define YYFLAG -32768 +#define YYNTBASE 5 + +#define YYTRANSLATE(x) ((unsigned)(x) <= 258 ? zztranslate[x] : 9) + +static const char zztranslate[] = { 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, 2, 2, 4, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 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 +}; + +#if YYDEBUG != 0 +static const short zzprhs[] = { 0, + 0, 7, 9, 12, 13, 14, 17 +}; + +static const short zzrhs[] = { 8, + 8, 8, 8, 6, 7, 0, 8, 0, 8, 8, + 0, 0, 0, 4, 8, 0, 3, 3, 0 +}; + +#endif + +#if YYDEBUG != 0 +static const short zzrline[] = { 0, + 78, 107, 114, 121, 132, 135, 144 +}; + +static const char * const zztname[] = { "$","error","$illegal.","DIGIT","'.'", +"date","year","seconds","digitpair","" +}; +#endif + +static const short zzr1[] = { 0, + 5, 6, 6, 6, 7, 7, 8 +}; + +static const short zzr2[] = { 0, + 6, 1, 2, 0, 0, 2, 2 +}; + +static const short zzdefact[] = { 0, + 0, 0, 7, 0, 0, 4, 5, 2, 0, 1, + 3, 6, 0, 0, 0 +}; + +static const short zzdefgoto[] = { 13, + 7, 10, 2 +}; + +static const short zzpact[] = { 2, + 5, 2,-32768, 2, 2, 2, -3, 2, 2,-32768, +-32768,-32768, 9, 10,-32768 +}; + +static const short zzpgoto[] = {-32768, +-32768,-32768, -2 +}; + + +#define YYLAST 10 + + +static const short zztable[] = { 4, + 9, 5, 6, 8, 1, 11, 12, 3, 14, 15 +}; + +static const short zzcheck[] = { 2, + 4, 4, 5, 6, 3, 8, 9, 3, 0, 0 +}; +/* -*-C-*- Note some compilers choke on comments on `#line' lines. */ +#line 3 "/usr/local/lib/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 */ +#ifdef __hpux +#ifdef __cplusplus +extern "C" { +void *alloca (unsigned int); +}; +#else /* not __cplusplus */ +void *alloca (); +#endif /* not __cplusplus */ +#endif /* __hpux */ +#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 zzerrok (zzerrstatus = 0) +#define zzclearin (zzchar = YYEMPTY) +#define YYEMPTY -2 +#define YYEOF 0 +#define YYACCEPT return(0) +#define YYABORT return(1) +#define YYERROR goto zzerrlab1 +/* Like YYERROR except do call zzerror. + 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 zzerrlab +#define YYRECOVERING() (!!zzerrstatus) +#define YYBACKUP(token, value) \ +do \ + if (zzchar == YYEMPTY && zzlen == 1) \ + { zzchar = (token), zzlval = (value); \ + zzchar1 = YYTRANSLATE (zzchar); \ + YYPOPSTACK; \ + goto zzbackup; \ + } \ + else \ + { zzerror ("syntax error: cannot back up"); YYERROR; } \ +while (0) + +#define YYTERROR 1 +#define YYERRCODE 256 + +#ifndef YYPURE +#define YYLEX zzlex() +#endif + +#ifdef YYPURE +#ifdef YYLSP_NEEDED +#define YYLEX zzlex(&zzlval, &zzlloc) +#else +#define YYLEX zzlex(&zzlval) +#endif +#endif + +/* If nonreentrant, generate the variables here */ + +#ifndef YYPURE + +int zzchar; /* the lookahead symbol */ +YYSTYPE zzlval; /* the semantic value of the */ + /* lookahead symbol */ + +#ifdef YYLSP_NEEDED +YYLTYPE zzlloc; /* location data for the lookahead */ + /* symbol */ +#endif + +int zznerrs; /* number of parse errors so far */ +#endif /* not YYPURE */ + +#if YYDEBUG != 0 +int zzdebug; /* 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 zzparse (void); +#endif + +#if __GNUC__ > 1 /* GNU C and GNU C++ define this. */ +#define __zz_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 +__zz_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 +__zz_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 "/usr/local/lib/bison.simple" +int +zzparse() +{ + register int zzstate; + register int zzn; + register short *zzssp; + register YYSTYPE *zzvsp; + int zzerrstatus; /* number of tokens to shift before error messages enabled */ + int zzchar1 = 0; /* lookahead token as an internal (translated) token number */ + + short zzssa[YYINITDEPTH]; /* the state stack */ + YYSTYPE zzvsa[YYINITDEPTH]; /* the semantic value stack */ + + short *zzss = zzssa; /* refer to the stacks thru separate pointers */ + YYSTYPE *zzvs = zzvsa; /* to allow zzoverflow to reallocate them elsewhere */ + +#ifdef YYLSP_NEEDED + YYLTYPE zzlsa[YYINITDEPTH]; /* the location stack */ + YYLTYPE *zzls = zzlsa; + YYLTYPE *zzlsp; + +#define YYPOPSTACK (zzvsp--, zzssp--, zzlsp--) +#else +#define YYPOPSTACK (zzvsp--, zzssp--) +#endif + + int zzstacksize = YYINITDEPTH; + +#ifdef YYPURE + int zzchar; + YYSTYPE zzlval; + int zznerrs; +#ifdef YYLSP_NEEDED + YYLTYPE zzlloc; +#endif +#endif + + YYSTYPE zzval; /* the variable used to return */ + /* semantic values from the action */ + /* routines */ + + int zzlen; + +#if YYDEBUG != 0 + if (zzdebug) + fprintf(stderr, "Starting parse\n"); +#endif + + zzstate = 0; + zzerrstatus = 0; + zznerrs = 0; + zzchar = 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. */ + + zzssp = zzss - 1; + zzvsp = zzvs; +#ifdef YYLSP_NEEDED + zzlsp = zzls; +#endif + +/* Push a new state, which is found in zzstate . */ +/* In all cases, when you get here, the value and location stacks + have just been pushed. so pushing a state here evens the stacks. */ +zznewstate: + + *++zzssp = zzstate; + + if (zzssp >= zzss + zzstacksize - 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 *zzvs1 = zzvs; + short *zzss1 = zzss; +#ifdef YYLSP_NEEDED + YYLTYPE *zzls1 = zzls; +#endif + + /* Get the current used size of the three stacks, in elements. */ + int size = zzssp - zzss + 1; + +#ifdef zzoverflow + /* 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 zzoverflow is a macro. */ + zzoverflow("parser stack overflow", + &zzss1, size * sizeof (*zzssp), + &zzvs1, size * sizeof (*zzvsp), + &zzls1, size * sizeof (*zzlsp), + &zzstacksize); +#else + zzoverflow("parser stack overflow", + &zzss1, size * sizeof (*zzssp), + &zzvs1, size * sizeof (*zzvsp), + &zzstacksize); +#endif + + zzss = zzss1; zzvs = zzvs1; +#ifdef YYLSP_NEEDED + zzls = zzls1; +#endif +#else /* no zzoverflow */ + /* Extend the stack our own way. */ + if (zzstacksize >= YYMAXDEPTH) + { + zzerror("parser stack overflow"); + return 2; + } + zzstacksize *= 2; + if (zzstacksize > YYMAXDEPTH) + zzstacksize = YYMAXDEPTH; + zzss = (short *) alloca (zzstacksize * sizeof (*zzssp)); + __zz_bcopy ((char *)zzss1, (char *)zzss, size * sizeof (*zzssp)); + zzvs = (YYSTYPE *) alloca (zzstacksize * sizeof (*zzvsp)); + __zz_bcopy ((char *)zzvs1, (char *)zzvs, size * sizeof (*zzvsp)); +#ifdef YYLSP_NEEDED + zzls = (YYLTYPE *) alloca (zzstacksize * sizeof (*zzlsp)); + __zz_bcopy ((char *)zzls1, (char *)zzls, size * sizeof (*zzlsp)); +#endif +#endif /* no zzoverflow */ + + zzssp = zzss + size - 1; + zzvsp = zzvs + size - 1; +#ifdef YYLSP_NEEDED + zzlsp = zzls + size - 1; +#endif + +#if YYDEBUG != 0 + if (zzdebug) + fprintf(stderr, "Stack size increased to %d\n", zzstacksize); +#endif + + if (zzssp >= zzss + zzstacksize - 1) + YYABORT; + } + +#if YYDEBUG != 0 + if (zzdebug) + fprintf(stderr, "Entering state %d\n", zzstate); +#endif + + goto zzbackup; + zzbackup: + +/* Do appropriate processing given the current state. */ +/* Read a lookahead token if we need one and don't already have one. */ +/* zzresume: */ + + /* First try to decide what to do without reference to lookahead token. */ + + zzn = zzpact[zzstate]; + if (zzn == YYFLAG) + goto zzdefault; + + /* Not known => get a lookahead token if don't already have one. */ + + /* zzchar is either YYEMPTY or YYEOF + or a valid token in external form. */ + + if (zzchar == YYEMPTY) + { +#if YYDEBUG != 0 + if (zzdebug) + fprintf(stderr, "Reading a token: "); +#endif + zzchar = YYLEX; + } + + /* Convert token to internal form (in zzchar1) for indexing tables with */ + + if (zzchar <= 0) /* This means end of input. */ + { + zzchar1 = 0; + zzchar = YYEOF; /* Don't call YYLEX any more */ + +#if YYDEBUG != 0 + if (zzdebug) + fprintf(stderr, "Now at end of input.\n"); +#endif + } + else + { + zzchar1 = YYTRANSLATE(zzchar); + +#if YYDEBUG != 0 + if (zzdebug) + { + fprintf (stderr, "Next token is %d (%s", zzchar, zztname[zzchar1]); + /* Give the individual parser a way to print the precise meaning + of a token, for further debugging info. */ +#ifdef YYPRINT + YYPRINT (stderr, zzchar, zzlval); +#endif + fprintf (stderr, ")\n"); + } +#endif + } + + zzn += zzchar1; + if (zzn < 0 || zzn > YYLAST || zzcheck[zzn] != zzchar1) + goto zzdefault; + + zzn = zztable[zzn]; + + /* zzn is what to do for this token type in this state. + Negative => reduce, -zzn is rule number. + Positive => shift, zzn is new state. + New state is final state => don't bother to shift, + just return success. + 0, or most negative number => error. */ + + if (zzn < 0) + { + if (zzn == YYFLAG) + goto zzerrlab; + zzn = -zzn; + goto zzreduce; + } + else if (zzn == 0) + goto zzerrlab; + + if (zzn == YYFINAL) + YYACCEPT; + + /* Shift the lookahead token. */ + +#if YYDEBUG != 0 + if (zzdebug) + fprintf(stderr, "Shifting token %d (%s), ", zzchar, zztname[zzchar1]); +#endif + + /* Discard the token being shifted unless it is eof. */ + if (zzchar != YYEOF) + zzchar = YYEMPTY; + + *++zzvsp = zzlval; +#ifdef YYLSP_NEEDED + *++zzlsp = zzlloc; +#endif + + /* count tokens shifted since error; after three, turn off error status. */ + if (zzerrstatus) zzerrstatus--; + + zzstate = zzn; + goto zznewstate; + +/* Do the default action for the current state. */ +zzdefault: + + zzn = zzdefact[zzstate]; + if (zzn == 0) + goto zzerrlab; + +/* Do a reduction. zzn is the number of a rule to reduce with. */ +zzreduce: + zzlen = zzr2[zzn]; + if (zzlen > 0) + zzval = zzvsp[1-zzlen]; /* implement default value of the action */ + +#if YYDEBUG != 0 + if (zzdebug) + { + int i; + + fprintf (stderr, "Reducing via rule %d (line %d), ", + zzn, zzrline[zzn]); + + /* Print the symbols being reduced, and their result. */ + for (i = zzprhs[zzn]; zzrhs[i] > 0; i++) + fprintf (stderr, "%s ", zztname[zzrhs[i]]); + fprintf (stderr, " -> %s\n", zztname[zzr1[zzn]]); + } +#endif + + + switch (zzn) { + +case 1: +#line 84 "./posixtm.y" +{ + if (zzvsp[-5] >= 1 && zzvsp[-5] <= 12) + t.tm_mon = zzvsp[-5] - 1; + else { + YYABORT; + } + if (zzvsp[-4] >= 1 && zzvsp[-4] <= 31) + t.tm_mday = zzvsp[-4]; + else { + YYABORT; + } + if (zzvsp[-3] >= 0 && zzvsp[-3] <= 23) + t.tm_hour = zzvsp[-3]; + else { + YYABORT; + } + if (zzvsp[-2] >= 0 && zzvsp[-2] <= 59) + t.tm_min = zzvsp[-2]; + else { + YYABORT; + } + ; + break;} +case 2: +#line 107 "./posixtm.y" +{ + t.tm_year = zzvsp[0]; + /* Deduce the century based on the year. + See POSIX.2 section 4.63.3. */ + if (zzvsp[0] <= 68) + t.tm_year += 100; + ; + break;} +case 3: +#line 114 "./posixtm.y" +{ + t.tm_year = zzvsp[-1] * 100 + zzvsp[0]; + if (t.tm_year < 1900) { + YYABORT; + } else + t.tm_year -= 1900; + ; + break;} +case 4: +#line 121 "./posixtm.y" +{ + time_t now; + struct tm *tmp; + + /* Use current year. */ + time (&now); + tmp = localtime (&now); + t.tm_year = tmp->tm_year; + ; + break;} +case 5: +#line 132 "./posixtm.y" +{ + t.tm_sec = 0; + ; + break;} +case 6: +#line 135 "./posixtm.y" +{ + if (zzvsp[0] >= 0 && zzvsp[0] <= 61) + t.tm_sec = zzvsp[0]; + else { + YYABORT; + } + ; + break;} +case 7: +#line 144 "./posixtm.y" +{ + zzval = zzvsp[-1] * 10 + zzvsp[0]; + ; + break;} +} + /* the action file gets copied in in place of this dollarsign */ +#line 465 "/usr/local/lib/bison.simple" + + zzvsp -= zzlen; + zzssp -= zzlen; +#ifdef YYLSP_NEEDED + zzlsp -= zzlen; +#endif + +#if YYDEBUG != 0 + if (zzdebug) + { + short *ssp1 = zzss - 1; + fprintf (stderr, "state stack now"); + while (ssp1 != zzssp) + fprintf (stderr, " %d", *++ssp1); + fprintf (stderr, "\n"); + } +#endif + + *++zzvsp = zzval; + +#ifdef YYLSP_NEEDED + zzlsp++; + if (zzlen == 0) + { + zzlsp->first_line = zzlloc.first_line; + zzlsp->first_column = zzlloc.first_column; + zzlsp->last_line = (zzlsp-1)->last_line; + zzlsp->last_column = (zzlsp-1)->last_column; + zzlsp->text = 0; + } + else + { + zzlsp->last_line = (zzlsp+zzlen-1)->last_line; + zzlsp->last_column = (zzlsp+zzlen-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. */ + + zzn = zzr1[zzn]; + + zzstate = zzpgoto[zzn - YYNTBASE] + *zzssp; + if (zzstate >= 0 && zzstate <= YYLAST && zzcheck[zzstate] == *zzssp) + zzstate = zztable[zzstate]; + else + zzstate = zzdefgoto[zzn - YYNTBASE]; + + goto zznewstate; + +zzerrlab: /* here on detecting error */ + + if (! zzerrstatus) + /* If not already recovering from an error, report this error. */ + { + ++zznerrs; + +#ifdef YYERROR_VERBOSE + zzn = zzpact[zzstate]; + + if (zzn > YYFLAG && zzn < YYLAST) + { + int size = 0; + char *msg; + int x, count; + + count = 0; + /* Start X at -zzn if nec to avoid negative indexes in zzcheck. */ + for (x = (zzn < 0 ? -zzn : 0); + x < (sizeof(zztname) / sizeof(char *)); x++) + if (zzcheck[x + zzn] == x) + size += strlen(zztname[x]) + 15, count++; + msg = (char *) malloc(size + 15); + if (msg != 0) + { + strcpy(msg, "parse error"); + + if (count < 5) + { + count = 0; + for (x = (zzn < 0 ? -zzn : 0); + x < (sizeof(zztname) / sizeof(char *)); x++) + if (zzcheck[x + zzn] == x) + { + strcat(msg, count == 0 ? ", expecting `" : " or `"); + strcat(msg, zztname[x]); + strcat(msg, "'"); + count++; + } + } + zzerror(msg); + free(msg); + } + else + zzerror ("parse error; also virtual memory exceeded"); + } + else +#endif /* YYERROR_VERBOSE */ + zzerror("parse error"); + } + + goto zzerrlab1; +zzerrlab1: /* here on error raised explicitly by an action */ + + if (zzerrstatus == 3) + { + /* if just tried and failed to reuse lookahead token after an error, discard it. */ + + /* return failure if at end of input */ + if (zzchar == YYEOF) + YYABORT; + +#if YYDEBUG != 0 + if (zzdebug) + fprintf(stderr, "Discarding token %d (%s).\n", zzchar, zztname[zzchar1]); +#endif + + zzchar = YYEMPTY; + } + + /* Else will try to reuse lookahead token + after shifting the error token. */ + + zzerrstatus = 3; /* Each real token shifted decrements this */ + + goto zzerrhandle; + +zzerrdefault: /* 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. */ + zzn = zzdefact[zzstate]; /* If its default is to accept any token, ok. Otherwise pop it.*/ + if (zzn) goto zzdefault; +#endif + +zzerrpop: /* pop the current state because it cannot handle the error token */ + + if (zzssp == zzss) YYABORT; + zzvsp--; + zzstate = *--zzssp; +#ifdef YYLSP_NEEDED + zzlsp--; +#endif + +#if YYDEBUG != 0 + if (zzdebug) + { + short *ssp1 = zzss - 1; + fprintf (stderr, "Error: state stack now"); + while (ssp1 != zzssp) + fprintf (stderr, " %d", *++ssp1); + fprintf (stderr, "\n"); + } +#endif + +zzerrhandle: + + zzn = zzpact[zzstate]; + if (zzn == YYFLAG) + goto zzerrdefault; + + zzn += YYTERROR; + if (zzn < 0 || zzn > YYLAST || zzcheck[zzn] != YYTERROR) + goto zzerrdefault; + + zzn = zztable[zzn]; + if (zzn < 0) + { + if (zzn == YYFLAG) + goto zzerrpop; + zzn = -zzn; + goto zzreduce; + } + else if (zzn == 0) + goto zzerrpop; + + if (zzn == YYFINAL) + YYACCEPT; + +#if YYDEBUG != 0 + if (zzdebug) + fprintf(stderr, "Shifting error token, "); +#endif + + *++zzvsp = zzlval; +#ifdef YYLSP_NEEDED + *++zzlsp = zzlloc; +#endif + + zzstate = zzn; + goto zznewstate; +} +#line 148 "./posixtm.y" + +static int +zzlex () +{ + char ch = *curpos++; + + if (ch >= '0' && ch <= '9') + { + zzlval = ch - '0'; + return DIGIT; + } + else if (ch == '.' || ch == 0) + return ch; + else + return '?'; /* Cause an error. */ +} + +static int +zzerror () +{ + return 0; +} + +/* Parse a POSIX-style date and return it, or (time_t)-1 for an error. */ + +time_t +posixtime (s) + char *s; +{ + curpos = s; + /* Let mktime decide whether it is daylight savings time. */ + t.tm_isdst = -1; + if (zzparse ()) + return (time_t)-1; + else + return mktime (&t); +} + +/* Parse a POSIX-style date and return it, or NULL for an error. */ + +struct tm * +posixtm (s) + char *s; +{ + if (posixtime (s) == -1) + return NULL; + return &t; +} -- 2.30.2