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Diffstat (limited to 'sys-utils/hwclock-parse-date.c')
| -rw-r--r-- | sys-utils/hwclock-parse-date.c | 3382 |
1 files changed, 3382 insertions, 0 deletions
diff --git a/sys-utils/hwclock-parse-date.c b/sys-utils/hwclock-parse-date.c new file mode 100644 index 0000000..76843d3 --- /dev/null +++ b/sys-utils/hwclock-parse-date.c @@ -0,0 +1,3382 @@ +/* A Bison parser, made by GNU Bison 3.4.1. */ + +/* Bison implementation for Yacc-like parsers in C + + Copyright (C) 1984, 1989-1990, 2000-2015, 2018-2019 Free Software Foundation, + Inc. + + 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 3 of the License, 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, see <http://www.gnu.org/licenses/>. */ + +/* As a special exception, you may create a larger work that contains + part or all of the Bison parser skeleton and distribute that work + under terms of your choice, so long as that work isn't itself a + parser generator using the skeleton or a modified version thereof + as a parser skeleton. Alternatively, if you modify or redistribute + the parser skeleton itself, you may (at your option) remove this + special exception, which will cause the skeleton and the resulting + Bison output files to be licensed under the GNU General Public + License without this special exception. + + This special exception was added by the Free Software Foundation in + version 2.2 of Bison. */ + +/* C LALR(1) parser skeleton written by Richard Stallman, by + simplifying the original so-called "semantic" parser. */ + +/* All symbols defined below should begin with yy or YY, to avoid + infringing on user name space. This should be done even for local + variables, as they might otherwise be expanded by user macros. + There are some unavoidable exceptions within include files to + define necessary library symbols; they are noted "INFRINGES ON + USER NAME SPACE" below. */ + +/* Undocumented macros, especially those whose name start with YY_, + are private implementation details. Do not rely on them. */ + +/* Identify Bison output. */ +#define YYBISON 1 + +/* Bison version. */ +#define YYBISON_VERSION "3.4.1" + +/* Skeleton name. */ +#define YYSKELETON_NAME "yacc.c" + +/* Pure parsers. */ +#define YYPURE 1 + +/* Push parsers. */ +#define YYPUSH 0 + +/* Pull parsers. */ +#define YYPULL 1 + + + + +/* First part of user prologue. */ +#line 1 "sys-utils/hwclock-parse-date.y" + +/** + * SPDX-License-Identifier: GPL-3.0-or-later + * + * Parse a string into an internal timestamp. + * + * This file is based on gnulib parse-datetime.y-dd7a871 with + * the other gnulib dependencies removed for use in util-linux. + * + * Copyright (C) 1999-2000, 2002-2017 Free Software Foundation, Inc. + * + * 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 3 of the License, 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, see <http://www.gnu.org/licenses/>. + * + * 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. + * + * Modified by Paul Eggert <eggert@twinsun.com> in August 1999 to do + * the right thing about local DST. Also modified by Paul Eggert + * <eggert@cs.ucla.edu> in February 2004 to support + * nanosecond-resolution timestamps, and in October 2004 to support + * TZ strings in dates. + */ + +/** + * FIXME: Check for arithmetic overflow in all cases, not just + * some of them. + */ + +#include <sys/time.h> +#include <time.h> + +#include "c.h" +#include "timeutils.h" +#include "hwclock.h" + +/** + * There's no need to extend the stack, so there's no need to involve + * alloca. + */ +#define YYSTACK_USE_ALLOCA 0 + +/** + * Tell Bison how much stack space is needed. 20 should be plenty for + * this grammar, which is not right recursive. Beware setting it too + * high, since that might cause problems on machines whose + * implementations have lame stack-overflow checking. + */ +#define YYMAXDEPTH 20 +#define YYINITDEPTH YYMAXDEPTH + +/** + * Since the code of parse-datetime.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 <inttypes.h> +#include <limits.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + + +#include <stdarg.h> +#include "cctype.h" +#include "nls.h" + +/** + * Bison's skeleton tests _STDLIB_H, while some stdlib.h headers + * use _STDLIB_H_ as witness. Map the latter to the one bison uses. + * FIXME: this is temporary. Remove when we have a mechanism to ensure + * that the version we're using is fixed, too. + */ +#ifdef _STDLIB_H_ +# undef _STDLIB_H +# define _STDLIB_H 1 +#endif + +/** + * Shift A right by B bits portably, by dividing A by 2**B and + * truncating towards minus infinity. A and B should be free of side + * effects, and B should be in the range 0 <= B <= INT_BITS - 2, where + * INT_BITS is the number of useful bits in an int. GNU code can + * assume that INT_BITS is at least 32. + * + * ISO C99 says that A >> B is implementation-defined if A < 0. Some + * implementations (e.g., UNICOS 9.0 on a Cray Y-MP EL) don't shift + * right in the usual way when A < 0, so SHR falls back on division if + * ordinary A >> B doesn't seem to be the usual signed shift. + */ +#define SHR(a, b) \ + (-1 >> 1 == -1 \ + ? (a) >> (b) \ + : (a) / (1 << (b)) - ((a) % (1 << (b)) < 0)) + +#define TM_YEAR_BASE 1900 + +#define HOUR(x) ((x) * 60) + +#define STREQ(a, b) (strcmp (a, b) == 0) + +/** + * Convert a possibly-signed character to an unsigned character. This is + * a bit safer than casting to unsigned char, since it catches some type + * errors that the cast doesn't. + */ +static unsigned char to_uchar (char ch) { return ch; } + +/** + * FIXME: It also assumes that signed integer overflow silently wraps around, + * but this is not true any more with recent versions of GCC 4. + */ + +/** + * An integer value, and the number of digits in its textual + * representation. + */ +typedef struct { + int negative; + intmax_t value; + size_t digits; +} textint; + +/* An entry in the lexical lookup table. */ +typedef struct { + char const *name; + int type; + int value; +} table; + +/* Meridian: am, pm, or 24-hour style. */ +enum { MERam, MERpm, MER24 }; + +enum { BILLION = 1000000000, LOG10_BILLION = 9 }; + +/* Relative year, month, day, hour, minutes, seconds, and nanoseconds. */ +typedef struct { + intmax_t year; + intmax_t month; + intmax_t day; + intmax_t hour; + intmax_t minutes; + time_t seconds; + int ns; +} relative_time; + +#if HAVE_COMPOUND_LITERALS +# define RELATIVE_TIME_0 ((relative_time) { 0, 0, 0, 0, 0, 0, 0 }) +#else +static relative_time const RELATIVE_TIME_0; +#endif + +/* Information passed to and from the parser. */ +typedef struct { + /* The input string remaining to be parsed. */ + const char *input; + + /* N, if this is the Nth Tuesday. */ + intmax_t day_ordinal; + + /* Day of week; Sunday is 0. */ + int day_number; + + /* tm_isdst flag for the local zone. */ + int local_isdst; + + /* Time zone, in minutes east of UTC. */ + int time_zone; + + /* Style used for time. */ + int meridian; + + /* Gregorian year, month, day, hour, minutes, seconds, and ns. */ + textint year; + intmax_t month; + intmax_t day; + intmax_t hour; + intmax_t minutes; + struct timespec seconds; /* includes nanoseconds */ + + /* Relative year, month, day, hour, minutes, seconds, and ns. */ + relative_time rel; + + /* Presence or counts of some nonterminals parsed so far. */ + int timespec_seen; + int rels_seen; + size_t dates_seen; + size_t days_seen; + size_t local_zones_seen; + size_t dsts_seen; + size_t times_seen; + size_t zones_seen; + + /* Table of local time zone abbreviations, null terminated. */ + table local_time_zone_table[3]; +} parser_control; + +union YYSTYPE; +static int yylex (union YYSTYPE *, parser_control *); +static int yyerror (parser_control const *, char const *); +static int time_zone_hhmm (parser_control *, textint, textint); + +/** + * Extract into *PC any date and time info from a string of digits + * of the form e.g., YYYYMMDD, YYMMDD, HHMM, HH (and sometimes YYY, + * YYYY, ...). + */ +static void digits_to_date_time(parser_control *pc, textint text_int) +{ + if (pc->dates_seen && ! pc->year.digits + && ! pc->rels_seen && (pc->times_seen || 2 < text_int.digits)) { + pc->year = text_int; + } else { + if (4 < text_int.digits) { + pc->dates_seen++; + pc->day = text_int.value % 100; + pc->month = (text_int.value / 100) % 100; + pc->year.value = text_int.value / 10000; + pc->year.digits = text_int.digits - 4; + } else { + pc->times_seen++; + if (text_int.digits <= 2) { + pc->hour = text_int.value; + pc->minutes = 0; + } + else { + pc->hour = text_int.value / 100; + pc->minutes = text_int.value % 100; + } + pc->seconds.tv_sec = 0; + pc->seconds.tv_nsec = 0; + pc->meridian = MER24; + } + } +} + +/* Increment PC->rel by FACTOR * REL (FACTOR is 1 or -1). */ +static void apply_relative_time(parser_control *pc, relative_time rel, + int factor) +{ + pc->rel.ns += factor * rel.ns; + pc->rel.seconds += factor * rel.seconds; + pc->rel.minutes += factor * rel.minutes; + pc->rel.hour += factor * rel.hour; + pc->rel.day += factor * rel.day; + pc->rel.month += factor * rel.month; + pc->rel.year += factor * rel.year; + pc->rels_seen = 1; +} + +/* Set PC-> hour, minutes, seconds and nanoseconds members from arguments. */ +static void +set_hhmmss(parser_control *pc, intmax_t hour, intmax_t minutes, + time_t sec, int nsec) +{ + pc->hour = hour; + pc->minutes = minutes; + pc->seconds.tv_sec = sec; + pc->seconds.tv_nsec = nsec; +} + + +#line 352 "sys-utils/hwclock-parse-date.c" + +# ifndef YY_NULLPTR +# if defined __cplusplus +# if 201103L <= __cplusplus +# define YY_NULLPTR nullptr +# else +# define YY_NULLPTR 0 +# endif +# else +# define YY_NULLPTR ((void*)0) +# endif +# endif + +/* Enabling verbose error messages. */ +#ifdef YYERROR_VERBOSE +# undef YYERROR_VERBOSE +# define YYERROR_VERBOSE 1 +#else +# define YYERROR_VERBOSE 0 +#endif + + +/* Debug traces. */ +#ifndef YYDEBUG +# define YYDEBUG 0 +#endif +#if YYDEBUG +extern int yydebug; +#endif + +/* Token type. */ +#ifndef YYTOKENTYPE +# define YYTOKENTYPE + enum yytokentype + { + tAGO = 258, + tDST = 259, + tYEAR_UNIT = 260, + tMONTH_UNIT = 261, + tHOUR_UNIT = 262, + tMINUTE_UNIT = 263, + tSEC_UNIT = 264, + tDAY_UNIT = 265, + tDAY_SHIFT = 266, + tDAY = 267, + tDAYZONE = 268, + tLOCAL_ZONE = 269, + tMERIDIAN = 270, + tMONTH = 271, + tORDINAL = 272, + tZONE = 273, + tSNUMBER = 274, + tUNUMBER = 275, + tSDECIMAL_NUMBER = 276, + tUDECIMAL_NUMBER = 277 + }; +#endif +/* Tokens. */ +#define tAGO 258 +#define tDST 259 +#define tYEAR_UNIT 260 +#define tMONTH_UNIT 261 +#define tHOUR_UNIT 262 +#define tMINUTE_UNIT 263 +#define tSEC_UNIT 264 +#define tDAY_UNIT 265 +#define tDAY_SHIFT 266 +#define tDAY 267 +#define tDAYZONE 268 +#define tLOCAL_ZONE 269 +#define tMERIDIAN 270 +#define tMONTH 271 +#define tORDINAL 272 +#define tZONE 273 +#define tSNUMBER 274 +#define tUNUMBER 275 +#define tSDECIMAL_NUMBER 276 +#define tUDECIMAL_NUMBER 277 + +/* Value type. */ +#if ! defined YYSTYPE && ! defined YYSTYPE_IS_DECLARED +union YYSTYPE +{ +#line 294 "sys-utils/hwclock-parse-date.y" + + intmax_t intval; + textint textintval; + struct timespec timespec; + relative_time rel; + +#line 443 "sys-utils/hwclock-parse-date.c" + +}; +typedef union YYSTYPE YYSTYPE; +# define YYSTYPE_IS_TRIVIAL 1 +# define YYSTYPE_IS_DECLARED 1 +#endif + + + +int yyparse (parser_control *pc); + + + + + +#ifdef short +# undef short +#endif + +#ifdef YYTYPE_UINT8 +typedef YYTYPE_UINT8 yytype_uint8; +#else +typedef unsigned char yytype_uint8; +#endif + +#ifdef YYTYPE_INT8 +typedef YYTYPE_INT8 yytype_int8; +#else +typedef signed char yytype_int8; +#endif + +#ifdef YYTYPE_UINT16 +typedef YYTYPE_UINT16 yytype_uint16; +#else +typedef unsigned short yytype_uint16; +#endif + +#ifdef YYTYPE_INT16 +typedef YYTYPE_INT16 yytype_int16; +#else +typedef short yytype_int16; +#endif + +#ifndef YYSIZE_T +# ifdef __SIZE_TYPE__ +# define YYSIZE_T __SIZE_TYPE__ +# elif defined size_t +# define YYSIZE_T size_t +# elif ! defined YYSIZE_T +# include <stddef.h> /* INFRINGES ON USER NAME SPACE */ +# define YYSIZE_T size_t +# else +# define YYSIZE_T unsigned +# endif +#endif + +#define YYSIZE_MAXIMUM ((YYSIZE_T) -1) + +#ifndef YY_ +# if defined YYENABLE_NLS && YYENABLE_NLS +# if ENABLE_NLS +# include <libintl.h> /* INFRINGES ON USER NAME SPACE */ +# define YY_(Msgid) dgettext ("bison-runtime", Msgid) +# endif +# endif +# ifndef YY_ +# define YY_(Msgid) Msgid +# endif +#endif + +#ifndef YY_ATTRIBUTE +# if (defined __GNUC__ \ + && (2 < __GNUC__ || (__GNUC__ == 2 && 96 <= __GNUC_MINOR__))) \ + || defined __SUNPRO_C && 0x5110 <= __SUNPRO_C +# define YY_ATTRIBUTE(Spec) __attribute__(Spec) +# else +# define YY_ATTRIBUTE(Spec) /* empty */ +# endif +#endif + +#ifndef YY_ATTRIBUTE_PURE +# define YY_ATTRIBUTE_PURE YY_ATTRIBUTE ((__pure__)) +#endif + +#ifndef YY_ATTRIBUTE_UNUSED +# define YY_ATTRIBUTE_UNUSED YY_ATTRIBUTE ((__unused__)) +#endif + +/* Suppress unused-variable warnings by "using" E. */ +#if ! defined lint || defined __GNUC__ +# define YYUSE(E) ((void) (E)) +#else +# define YYUSE(E) /* empty */ +#endif + +#if defined __GNUC__ && ! defined __ICC && 407 <= __GNUC__ * 100 + __GNUC_MINOR__ +/* Suppress an incorrect diagnostic about yylval being uninitialized. */ +# define YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN \ + _Pragma ("GCC diagnostic push") \ + _Pragma ("GCC diagnostic ignored \"-Wuninitialized\"")\ + _Pragma ("GCC diagnostic ignored \"-Wmaybe-uninitialized\"") +# define YY_IGNORE_MAYBE_UNINITIALIZED_END \ + _Pragma ("GCC diagnostic pop") +#else +# define YY_INITIAL_VALUE(Value) Value +#endif +#ifndef YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN +# define YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN +# define YY_IGNORE_MAYBE_UNINITIALIZED_END +#endif +#ifndef YY_INITIAL_VALUE +# define YY_INITIAL_VALUE(Value) /* Nothing. */ +#endif + + +#define YY_ASSERT(E) ((void) (0 && (E))) + +#if ! defined yyoverflow || YYERROR_VERBOSE + +/* The parser invokes alloca or malloc; define the necessary symbols. */ + +# ifdef YYSTACK_USE_ALLOCA +# if YYSTACK_USE_ALLOCA +# ifdef __GNUC__ +# define YYSTACK_ALLOC __builtin_alloca +# elif defined __BUILTIN_VA_ARG_INCR +# include <alloca.h> /* INFRINGES ON USER NAME SPACE */ +# elif defined _AIX +# define YYSTACK_ALLOC __alloca +# elif defined _MSC_VER +# include <malloc.h> /* INFRINGES ON USER NAME SPACE */ +# define alloca _alloca +# else +# define YYSTACK_ALLOC alloca +# if ! defined _ALLOCA_H && ! defined EXIT_SUCCESS +# include <stdlib.h> /* INFRINGES ON USER NAME SPACE */ + /* Use EXIT_SUCCESS as a witness for stdlib.h. */ +# ifndef EXIT_SUCCESS +# define EXIT_SUCCESS 0 +# endif +# endif +# endif +# endif +# endif + +# ifdef YYSTACK_ALLOC + /* Pacify GCC's 'empty if-body' warning. */ +# define YYSTACK_FREE(Ptr) do { /* empty */; } while (0) +# ifndef YYSTACK_ALLOC_MAXIMUM + /* The OS might guarantee only one guard page at the bottom of the stack, + and a page size can be as small as 4096 bytes. So we cannot safely + invoke alloca (N) if N exceeds 4096. Use a slightly smaller number + to allow for a few compiler-allocated temporary stack slots. */ +# define YYSTACK_ALLOC_MAXIMUM 4032 /* reasonable circa 2006 */ +# endif +# else +# define YYSTACK_ALLOC YYMALLOC +# define YYSTACK_FREE YYFREE +# ifndef YYSTACK_ALLOC_MAXIMUM +# define YYSTACK_ALLOC_MAXIMUM YYSIZE_MAXIMUM +# endif +# if (defined __cplusplus && ! defined EXIT_SUCCESS \ + && ! ((defined YYMALLOC || defined malloc) \ + && (defined YYFREE || defined free))) +# include <stdlib.h> /* INFRINGES ON USER NAME SPACE */ +# ifndef EXIT_SUCCESS +# define EXIT_SUCCESS 0 +# endif +# endif +# ifndef YYMALLOC +# define YYMALLOC malloc +# if ! defined malloc && ! defined EXIT_SUCCESS +void *malloc (YYSIZE_T); /* INFRINGES ON USER NAME SPACE */ +# endif +# endif +# ifndef YYFREE +# define YYFREE free +# if ! defined free && ! defined EXIT_SUCCESS +void free (void *); /* INFRINGES ON USER NAME SPACE */ +# endif +# endif +# endif +#endif /* ! defined yyoverflow || YYERROR_VERBOSE */ + + +#if (! defined yyoverflow \ + && (! defined __cplusplus \ + || (defined YYSTYPE_IS_TRIVIAL && YYSTYPE_IS_TRIVIAL))) + +/* A type that is properly aligned for any stack member. */ +union yyalloc +{ + yytype_int16 yyss_alloc; + YYSTYPE yyvs_alloc; +}; + +/* The size of the maximum gap between one aligned stack and the next. */ +# define YYSTACK_GAP_MAXIMUM (sizeof (union yyalloc) - 1) + +/* The size of an array large to enough to hold all stacks, each with + N elements. */ +# define YYSTACK_BYTES(N) \ + ((N) * (sizeof (yytype_int16) + sizeof (YYSTYPE)) \ + + YYSTACK_GAP_MAXIMUM) + +# define YYCOPY_NEEDED 1 + +/* Relocate STACK from its old location to the new one. The + local variables YYSIZE and YYSTACKSIZE give the old and new number of + elements in the stack, and YYPTR gives the new location of the + stack. Advance YYPTR to a properly aligned location for the next + stack. */ +# define YYSTACK_RELOCATE(Stack_alloc, Stack) \ + do \ + { \ + YYSIZE_T yynewbytes; \ + YYCOPY (&yyptr->Stack_alloc, Stack, yysize); \ + Stack = &yyptr->Stack_alloc; \ + yynewbytes = yystacksize * sizeof (*Stack) + YYSTACK_GAP_MAXIMUM; \ + yyptr += yynewbytes / sizeof (*yyptr); \ + } \ + while (0) + +#endif + +#if defined YYCOPY_NEEDED && YYCOPY_NEEDED +/* Copy COUNT objects from SRC to DST. The source and destination do + not overlap. */ +# ifndef YYCOPY +# if defined __GNUC__ && 1 < __GNUC__ +# define YYCOPY(Dst, Src, Count) \ + __builtin_memcpy (Dst, Src, (Count) * sizeof (*(Src))) +# else +# define YYCOPY(Dst, Src, Count) \ + do \ + { \ + YYSIZE_T yyi; \ + for (yyi = 0; yyi < (Count); yyi++) \ + (Dst)[yyi] = (Src)[yyi]; \ + } \ + while (0) +# endif +# endif +#endif /* !YYCOPY_NEEDED */ + +/* YYFINAL -- State number of the termination state. */ +#define YYFINAL 12 +/* YYLAST -- Last index in YYTABLE. */ +#define YYLAST 112 + +/* YYNTOKENS -- Number of terminals. */ +#define YYNTOKENS 28 +/* YYNNTS -- Number of nonterminals. */ +#define YYNNTS 26 +/* YYNRULES -- Number of rules. */ +#define YYNRULES 91 +/* YYNSTATES -- Number of states. */ +#define YYNSTATES 114 + +#define YYUNDEFTOK 2 +#define YYMAXUTOK 277 + +/* YYTRANSLATE(TOKEN-NUM) -- Symbol number corresponding to TOKEN-NUM + as returned by yylex, with out-of-bounds checking. */ +#define YYTRANSLATE(YYX) \ + ((unsigned) (YYX) <= YYMAXUTOK ? yytranslate[YYX] : YYUNDEFTOK) + +/* YYTRANSLATE[TOKEN-NUM] -- Symbol number corresponding to TOKEN-NUM + as returned by yylex. */ +static const yytype_uint8 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, 26, 2, 2, 27, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 25, 2, + 2, 2, 2, 2, 23, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 24, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 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, 16, 17, 18, 19, 20, 21, 22 +}; + +#if YYDEBUG + /* YYRLINE[YYN] -- Source line where rule number YYN was defined. */ +static const yytype_uint16 yyrline[] = +{ + 0, 321, 321, 322, 326, 332, 334, 338, 341, 344, + 347, 350, 353, 356, 357, 358, 362, 366, 370, 374, + 378, 382, 386, 390, 394, 400, 402, 406, 431, 435, + 446, 449, 452, 456, 460, 464, 467, 473, 477, 481, + 485, 492, 496, 514, 521, 528, 532, 537, 541, 546, + 550, 559, 561, 563, 568, 570, 572, 574, 576, 578, + 580, 582, 584, 586, 588, 590, 592, 594, 596, 598, + 600, 602, 607, 612, 614, 618, 620, 622, 624, 626, + 628, 633, 637, 637, 640, 641, 646, 647, 652, 657, + 669, 670 +}; +#endif + +#if YYDEBUG || YYERROR_VERBOSE || 0 +/* YYTNAME[SYMBOL-NUM] -- String name of the symbol SYMBOL-NUM. + First, the terminals, then, starting at YYNTOKENS, nonterminals. */ +static const char *const yytname[] = +{ + "$end", "error", "$undefined", "tAGO", "tDST", "tYEAR_UNIT", + "tMONTH_UNIT", "tHOUR_UNIT", "tMINUTE_UNIT", "tSEC_UNIT", "tDAY_UNIT", + "tDAY_SHIFT", "tDAY", "tDAYZONE", "tLOCAL_ZONE", "tMERIDIAN", "tMONTH", + "tORDINAL", "tZONE", "tSNUMBER", "tUNUMBER", "tSDECIMAL_NUMBER", + "tUDECIMAL_NUMBER", "'@'", "'T'", "':'", "','", "'/'", "$accept", "spec", + "timespec", "items", "item", "datetime", "iso_8601_datetime", "time", + "iso_8601_time", "o_zone_offset", "zone_offset", "local_zone", "zone", + "day", "date", "iso_8601_date", "rel", "relunit", "relunit_snumber", + "dayshift", "seconds", "signed_seconds", "unsigned_seconds", "number", + "hybrid", "o_colon_minutes", YY_NULLPTR +}; +#endif + +# ifdef YYPRINT +/* YYTOKNUM[NUM] -- (External) token number corresponding to the + (internal) symbol number NUM (which must be that of a token). */ +static const yytype_uint16 yytoknum[] = +{ + 0, 256, 257, 258, 259, 260, 261, 262, 263, 264, + 265, 266, 267, 268, 269, 270, 271, 272, 273, 274, + 275, 276, 277, 64, 84, 58, 44, 47 +}; +# endif + +#define YYPACT_NINF -93 + +#define yypact_value_is_default(Yystate) \ + (!!((Yystate) == (-93))) + +#define YYTABLE_NINF -1 + +#define yytable_value_is_error(Yytable_value) \ + 0 + + /* YYPACT[STATE-NUM] -- Index in YYTABLE of the portion describing + STATE-NUM. */ +static const yytype_int8 yypact[] = +{ + 38, 27, 77, -93, 46, -93, -93, -93, -93, -93, + -93, -93, -93, -93, -93, -93, -93, -93, -93, -93, + 62, -93, 82, -3, 66, 3, 74, -4, 83, 84, + 75, -93, -93, -93, -93, -93, -93, -93, -93, -93, + 71, -93, 93, -93, -93, -93, -93, -93, -93, 78, + 72, -93, -93, -93, -93, -93, -93, -93, -93, 25, + -93, -93, -93, -93, -93, -93, -93, -93, -93, -93, + -93, -93, -93, -93, -93, 21, 19, 79, 80, -93, + -93, -93, -93, -93, 81, -93, -93, 85, 86, -93, + -93, -93, -93, -93, -6, 76, 17, -93, -93, -93, + -93, 87, 69, -93, -93, 88, 89, -1, -93, 18, + -93, -93, 69, 91 +}; + + /* YYDEFACT[STATE-NUM] -- Default reduction number in state STATE-NUM. + Performed when YYTABLE does not specify something else to do. Zero + means the default is an error. */ +static const yytype_uint8 yydefact[] = +{ + 5, 0, 0, 2, 3, 85, 87, 84, 86, 4, + 82, 83, 1, 56, 59, 65, 68, 73, 62, 81, + 37, 35, 28, 0, 0, 30, 0, 88, 0, 0, + 31, 6, 7, 16, 8, 21, 9, 10, 12, 11, + 49, 13, 52, 74, 53, 14, 15, 38, 29, 0, + 45, 54, 57, 63, 66, 69, 60, 39, 36, 90, + 32, 75, 76, 78, 79, 80, 77, 55, 58, 64, + 67, 70, 61, 40, 18, 47, 90, 0, 0, 22, + 89, 71, 72, 33, 0, 51, 44, 0, 0, 34, + 43, 48, 50, 27, 25, 41, 0, 17, 46, 91, + 19, 90, 0, 23, 26, 0, 0, 25, 42, 25, + 20, 24, 0, 25 +}; + + /* YYPGOTO[NTERM-NUM]. */ +static const yytype_int8 yypgoto[] = +{ + -93, -93, -93, -93, -93, -93, -93, -93, 20, -68, + -27, -93, -93, -93, -93, -93, -93, -93, 60, -93, + -93, -93, -92, -93, -93, 43 +}; + + /* YYDEFGOTO[NTERM-NUM]. */ +static const yytype_int8 yydefgoto[] = +{ + -1, 2, 3, 4, 31, 32, 33, 34, 35, 103, + 104, 36, 37, 38, 39, 40, 41, 42, 43, 44, + 9, 10, 11, 45, 46, 93 +}; + + /* YYTABLE[YYPACT[STATE-NUM]] -- What to do in state STATE-NUM. If + positive, shift that token. If negative, reduce the rule whose + number is the opposite. If YYTABLE_NINF, syntax error. */ +static const yytype_uint8 yytable[] = +{ + 79, 67, 68, 69, 70, 71, 72, 58, 73, 100, + 107, 74, 75, 101, 110, 76, 49, 50, 101, 102, + 113, 77, 59, 78, 61, 62, 63, 64, 65, 66, + 61, 62, 63, 64, 65, 66, 101, 101, 92, 111, + 90, 91, 106, 112, 88, 111, 5, 6, 7, 8, + 88, 13, 14, 15, 16, 17, 18, 19, 20, 21, + 22, 1, 23, 24, 25, 26, 27, 28, 29, 79, + 30, 51, 52, 53, 54, 55, 56, 12, 57, 61, + 62, 63, 64, 65, 66, 60, 48, 80, 47, 6, + 83, 8, 81, 82, 26, 84, 85, 86, 87, 94, + 95, 96, 89, 105, 97, 98, 99, 0, 108, 109, + 101, 0, 88 +}; + +static const yytype_int8 yycheck[] = +{ + 27, 5, 6, 7, 8, 9, 10, 4, 12, 15, + 102, 15, 16, 19, 15, 19, 19, 20, 19, 25, + 112, 25, 19, 27, 5, 6, 7, 8, 9, 10, + 5, 6, 7, 8, 9, 10, 19, 19, 19, 107, + 19, 20, 25, 25, 25, 113, 19, 20, 21, 22, + 25, 5, 6, 7, 8, 9, 10, 11, 12, 13, + 14, 23, 16, 17, 18, 19, 20, 21, 22, 96, + 24, 5, 6, 7, 8, 9, 10, 0, 12, 5, + 6, 7, 8, 9, 10, 25, 4, 27, 26, 20, + 30, 22, 9, 9, 19, 24, 3, 19, 26, 20, + 20, 20, 59, 27, 84, 20, 20, -1, 20, 20, + 19, -1, 25 +}; + + /* YYSTOS[STATE-NUM] -- The (internal number of the) accessing + symbol of state STATE-NUM. */ +static const yytype_uint8 yystos[] = +{ + 0, 23, 29, 30, 31, 19, 20, 21, 22, 48, + 49, 50, 0, 5, 6, 7, 8, 9, 10, 11, + 12, 13, 14, 16, 17, 18, 19, 20, 21, 22, + 24, 32, 33, 34, 35, 36, 39, 40, 41, 42, + 43, 44, 45, 46, 47, 51, 52, 26, 4, 19, + 20, 5, 6, 7, 8, 9, 10, 12, 4, 19, + 46, 5, 6, 7, 8, 9, 10, 5, 6, 7, + 8, 9, 10, 12, 15, 16, 19, 25, 27, 38, + 46, 9, 9, 46, 24, 3, 19, 26, 25, 53, + 19, 20, 19, 53, 20, 20, 20, 36, 20, 20, + 15, 19, 25, 37, 38, 27, 25, 50, 20, 20, + 15, 37, 25, 50 +}; + + /* YYR1[YYN] -- Symbol number of symbol that rule YYN derives. */ +static const yytype_uint8 yyr1[] = +{ + 0, 28, 29, 29, 30, 31, 31, 32, 32, 32, + 32, 32, 32, 32, 32, 32, 33, 34, 35, 35, + 35, 35, 36, 36, 36, 37, 37, 38, 39, 39, + 40, 40, 40, 40, 40, 40, 40, 41, 41, 41, + 41, 42, 42, 42, 42, 42, 42, 42, 42, 42, + 43, 44, 44, 44, 45, 45, 45, 45, 45, 45, + 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, + 45, 45, 45, 45, 45, 46, 46, 46, 46, 46, + 46, 47, 48, 48, 49, 49, 50, 50, 51, 52, + 53, 53 +}; + + /* YYR2[YYN] -- Number of symbols on the right hand side of rule YYN. */ +static const yytype_uint8 yyr2[] = +{ + 0, 2, 1, 1, 2, 0, 2, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 3, 2, 4, + 6, 1, 2, 4, 6, 0, 1, 2, 1, 2, + 1, 1, 2, 2, 3, 1, 2, 1, 2, 2, + 2, 3, 5, 3, 3, 2, 4, 2, 3, 1, + 3, 2, 1, 1, 2, 2, 1, 2, 2, 1, + 2, 2, 1, 2, 2, 1, 2, 2, 1, 2, + 2, 2, 2, 1, 1, 2, 2, 2, 2, 2, + 2, 1, 1, 1, 1, 1, 1, 1, 1, 2, + 0, 2 +}; + + +#define yyerrok (yyerrstatus = 0) +#define yyclearin (yychar = YYEMPTY) +#define YYEMPTY (-2) +#define YYEOF 0 + +#define YYACCEPT goto yyacceptlab +#define YYABORT goto yyabortlab +#define YYERROR goto yyerrorlab + + +#define YYRECOVERING() (!!yyerrstatus) + +#define YYBACKUP(Token, Value) \ + do \ + if (yychar == YYEMPTY) \ + { \ + yychar = (Token); \ + yylval = (Value); \ + YYPOPSTACK (yylen); \ + yystate = *yyssp; \ + goto yybackup; \ + } \ + else \ + { \ + yyerror (pc, YY_("syntax error: cannot back up")); \ + YYERROR; \ + } \ + while (0) + +/* Error token number */ +#define YYTERROR 1 +#define YYERRCODE 256 + + + +/* Enable debugging if requested. */ +#if YYDEBUG + +# ifndef YYFPRINTF +# include <stdio.h> /* INFRINGES ON USER NAME SPACE */ +# define YYFPRINTF fprintf +# endif + +# define YYDPRINTF(Args) \ +do { \ + if (yydebug) \ + YYFPRINTF Args; \ +} while (0) + +/* This macro is provided for backward compatibility. */ +#ifndef YY_LOCATION_PRINT +# define YY_LOCATION_PRINT(File, Loc) ((void) 0) +#endif + + +# define YY_SYMBOL_PRINT(Title, Type, Value, Location) \ +do { \ + if (yydebug) \ + { \ + YYFPRINTF (stderr, "%s ", Title); \ + yy_symbol_print (stderr, \ + Type, Value, pc); \ + YYFPRINTF (stderr, "\n"); \ + } \ +} while (0) + + +/*-----------------------------------. +| Print this symbol's value on YYO. | +`-----------------------------------*/ + +static void +yy_symbol_value_print (FILE *yyo, int yytype, YYSTYPE const * const yyvaluep, parser_control *pc) +{ + FILE *yyoutput = yyo; + YYUSE (yyoutput); + YYUSE (pc); + if (!yyvaluep) + return; +# ifdef YYPRINT + if (yytype < YYNTOKENS) + YYPRINT (yyo, yytoknum[yytype], *yyvaluep); +# endif + YYUSE (yytype); +} + + +/*---------------------------. +| Print this symbol on YYO. | +`---------------------------*/ + +static void +yy_symbol_print (FILE *yyo, int yytype, YYSTYPE const * const yyvaluep, parser_control *pc) +{ + YYFPRINTF (yyo, "%s %s (", + yytype < YYNTOKENS ? "token" : "nterm", yytname[yytype]); + + yy_symbol_value_print (yyo, yytype, yyvaluep, pc); + YYFPRINTF (yyo, ")"); +} + +/*------------------------------------------------------------------. +| yy_stack_print -- Print the state stack from its BOTTOM up to its | +| TOP (included). | +`------------------------------------------------------------------*/ + +static void +yy_stack_print (yytype_int16 *yybottom, yytype_int16 *yytop) +{ + YYFPRINTF (stderr, "Stack now"); + for (; yybottom <= yytop; yybottom++) + { + int yybot = *yybottom; + YYFPRINTF (stderr, " %d", yybot); + } + YYFPRINTF (stderr, "\n"); +} + +# define YY_STACK_PRINT(Bottom, Top) \ +do { \ + if (yydebug) \ + yy_stack_print ((Bottom), (Top)); \ +} while (0) + + +/*------------------------------------------------. +| Report that the YYRULE is going to be reduced. | +`------------------------------------------------*/ + +static void +yy_reduce_print (yytype_int16 *yyssp, YYSTYPE *yyvsp, int yyrule, parser_control *pc) +{ + unsigned long yylno = yyrline[yyrule]; + int yynrhs = yyr2[yyrule]; + int yyi; + YYFPRINTF (stderr, "Reducing stack by rule %d (line %lu):\n", + yyrule - 1, yylno); + /* The symbols being reduced. */ + for (yyi = 0; yyi < yynrhs; yyi++) + { + YYFPRINTF (stderr, " $%d = ", yyi + 1); + yy_symbol_print (stderr, + yystos[yyssp[yyi + 1 - yynrhs]], + &yyvsp[(yyi + 1) - (yynrhs)] + , pc); + YYFPRINTF (stderr, "\n"); + } +} + +# define YY_REDUCE_PRINT(Rule) \ +do { \ + if (yydebug) \ + yy_reduce_print (yyssp, yyvsp, Rule, pc); \ +} while (0) + +/* Nonzero means print parse trace. It is left uninitialized so that + multiple parsers can coexist. */ +int yydebug; +#else /* !YYDEBUG */ +# define YYDPRINTF(Args) +# define YY_SYMBOL_PRINT(Title, Type, Value, Location) +# define YY_STACK_PRINT(Bottom, Top) +# define YY_REDUCE_PRINT(Rule) +#endif /* !YYDEBUG */ + + +/* YYINITDEPTH -- initial size of the parser's stacks. */ +#ifndef YYINITDEPTH +# define YYINITDEPTH 200 +#endif + +/* YYMAXDEPTH -- maximum size the stacks can grow to (effective only + if the built-in stack extension method is used). + + Do not make this value too large; the results are undefined if + YYSTACK_ALLOC_MAXIMUM < YYSTACK_BYTES (YYMAXDEPTH) + evaluated with infinite-precision integer arithmetic. */ + +#ifndef YYMAXDEPTH +# define YYMAXDEPTH 10000 +#endif + + +#if YYERROR_VERBOSE + +# ifndef yystrlen +# if defined __GLIBC__ && defined _STRING_H +# define yystrlen strlen +# else +/* Return the length of YYSTR. */ +static YYSIZE_T +yystrlen (const char *yystr) +{ + YYSIZE_T yylen; + for (yylen = 0; yystr[yylen]; yylen++) + continue; + return yylen; +} +# endif +# endif + +# ifndef yystpcpy +# if defined __GLIBC__ && defined _STRING_H && defined _GNU_SOURCE +# define yystpcpy stpcpy +# else +/* Copy YYSRC to YYDEST, returning the address of the terminating '\0' in + YYDEST. */ +static char * +yystpcpy (char *yydest, const char *yysrc) +{ + char *yyd = yydest; + const char *yys = yysrc; + + while ((*yyd++ = *yys++) != '\0') + continue; + + return yyd - 1; +} +# endif +# endif + +# ifndef yytnamerr +/* Copy to YYRES the contents of YYSTR after stripping away unnecessary + quotes and backslashes, so that it's suitable for yyerror. The + heuristic is that double-quoting is unnecessary unless the string + contains an apostrophe, a comma, or backslash (other than + backslash-backslash). YYSTR is taken from yytname. If YYRES is + null, do not copy; instead, return the length of what the result + would have been. */ +static YYSIZE_T +yytnamerr (char *yyres, const char *yystr) +{ + if (*yystr == '"') + { + YYSIZE_T yyn = 0; + char const *yyp = yystr; + + for (;;) + switch (*++yyp) + { + case '\'': + case ',': + goto do_not_strip_quotes; + + case '\\': + if (*++yyp != '\\') + goto do_not_strip_quotes; + else + goto append; + + append: + default: + if (yyres) + yyres[yyn] = *yyp; + yyn++; + break; + + case '"': + if (yyres) + yyres[yyn] = '\0'; + return yyn; + } + do_not_strip_quotes: ; + } + + if (! yyres) + return yystrlen (yystr); + + return (YYSIZE_T) (yystpcpy (yyres, yystr) - yyres); +} +# endif + +/* Copy into *YYMSG, which is of size *YYMSG_ALLOC, an error message + about the unexpected token YYTOKEN for the state stack whose top is + YYSSP. + + Return 0 if *YYMSG was successfully written. Return 1 if *YYMSG is + not large enough to hold the message. In that case, also set + *YYMSG_ALLOC to the required number of bytes. Return 2 if the + required number of bytes is too large to store. */ +static int +yysyntax_error (YYSIZE_T *yymsg_alloc, char **yymsg, + yytype_int16 *yyssp, int yytoken) +{ + YYSIZE_T yysize0 = yytnamerr (YY_NULLPTR, yytname[yytoken]); + YYSIZE_T yysize = yysize0; + enum { YYERROR_VERBOSE_ARGS_MAXIMUM = 5 }; + /* Internationalized format string. */ + const char *yyformat = YY_NULLPTR; + /* Arguments of yyformat. */ + char const *yyarg[YYERROR_VERBOSE_ARGS_MAXIMUM]; + /* Number of reported tokens (one for the "unexpected", one per + "expected"). */ + int yycount = 0; + + /* There are many possibilities here to consider: + - If this state is a consistent state with a default action, then + the only way this function was invoked is if the default action + is an error action. In that case, don't check for expected + tokens because there are none. + - The only way there can be no lookahead present (in yychar) is if + this state is a consistent state with a default action. Thus, + detecting the absence of a lookahead is sufficient to determine + that there is no unexpected or expected token to report. In that + case, just report a simple "syntax error". + - Don't assume there isn't a lookahead just because this state is a + consistent state with a default action. There might have been a + previous inconsistent state, consistent state with a non-default + action, or user semantic action that manipulated yychar. + - Of course, the expected token list depends on states to have + correct lookahead information, and it depends on the parser not + to perform extra reductions after fetching a lookahead from the + scanner and before detecting a syntax error. Thus, state merging + (from LALR or IELR) and default reductions corrupt the expected + token list. However, the list is correct for canonical LR with + one exception: it will still contain any token that will not be + accepted due to an error action in a later state. + */ + if (yytoken != YYEMPTY) + { + int yyn = yypact[*yyssp]; + yyarg[yycount++] = yytname[yytoken]; + if (!yypact_value_is_default (yyn)) + { + /* Start YYX at -YYN if negative to avoid negative indexes in + YYCHECK. In other words, skip the first -YYN actions for + this state because they are default actions. */ + int yyxbegin = yyn < 0 ? -yyn : 0; + /* Stay within bounds of both yycheck and yytname. */ + int yychecklim = YYLAST - yyn + 1; + int yyxend = yychecklim < YYNTOKENS ? yychecklim : YYNTOKENS; + int yyx; + + for (yyx = yyxbegin; yyx < yyxend; ++yyx) + if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR + && !yytable_value_is_error (yytable[yyx + yyn])) + { + if (yycount == YYERROR_VERBOSE_ARGS_MAXIMUM) + { + yycount = 1; + yysize = yysize0; + break; + } + yyarg[yycount++] = yytname[yyx]; + { + YYSIZE_T yysize1 = yysize + yytnamerr (YY_NULLPTR, yytname[yyx]); + if (yysize <= yysize1 && yysize1 <= YYSTACK_ALLOC_MAXIMUM) + yysize = yysize1; + else + return 2; + } + } + } + } + + switch (yycount) + { +# define YYCASE_(N, S) \ + case N: \ + yyformat = S; \ + break + default: /* Avoid compiler warnings. */ + YYCASE_(0, YY_("syntax error")); + YYCASE_(1, YY_("syntax error, unexpected %s")); + YYCASE_(2, YY_("syntax error, unexpected %s, expecting %s")); + YYCASE_(3, YY_("syntax error, unexpected %s, expecting %s or %s")); + YYCASE_(4, YY_("syntax error, unexpected %s, expecting %s or %s or %s")); + YYCASE_(5, YY_("syntax error, unexpected %s, expecting %s or %s or %s or %s")); +# undef YYCASE_ + } + + { + YYSIZE_T yysize1 = yysize + yystrlen (yyformat); + if (yysize <= yysize1 && yysize1 <= YYSTACK_ALLOC_MAXIMUM) + yysize = yysize1; + else + return 2; + } + + if (*yymsg_alloc < yysize) + { + *yymsg_alloc = 2 * yysize; + if (! (yysize <= *yymsg_alloc + && *yymsg_alloc <= YYSTACK_ALLOC_MAXIMUM)) + *yymsg_alloc = YYSTACK_ALLOC_MAXIMUM; + return 1; + } + + /* Avoid sprintf, as that infringes on the user's name space. + Don't have undefined behavior even if the translation + produced a string with the wrong number of "%s"s. */ + { + char *yyp = *yymsg; + int yyi = 0; + while ((*yyp = *yyformat) != '\0') + if (*yyp == '%' && yyformat[1] == 's' && yyi < yycount) + { + yyp += yytnamerr (yyp, yyarg[yyi++]); + yyformat += 2; + } + else + { + yyp++; + yyformat++; + } + } + return 0; +} +#endif /* YYERROR_VERBOSE */ + +/*-----------------------------------------------. +| Release the memory associated to this symbol. | +`-----------------------------------------------*/ + +static void +yydestruct (const char *yymsg, int yytype, YYSTYPE *yyvaluep, parser_control *pc) +{ + YYUSE (yyvaluep); + YYUSE (pc); + if (!yymsg) + yymsg = "Deleting"; + YY_SYMBOL_PRINT (yymsg, yytype, yyvaluep, yylocationp); + + YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN + YYUSE (yytype); + YY_IGNORE_MAYBE_UNINITIALIZED_END +} + + + + +/*----------. +| yyparse. | +`----------*/ + +int +yyparse (parser_control *pc) +{ +/* The lookahead symbol. */ +int yychar; + + +/* The semantic value of the lookahead symbol. */ +/* Default value used for initialization, for pacifying older GCCs + or non-GCC compilers. */ +YY_INITIAL_VALUE (static YYSTYPE yyval_default;) +YYSTYPE yylval YY_INITIAL_VALUE (= yyval_default); + + /* Number of syntax errors so far. */ + int yynerrs; + + int yystate; + /* Number of tokens to shift before error messages enabled. */ + int yyerrstatus; + + /* The stacks and their tools: + 'yyss': related to states. + 'yyvs': related to semantic values. + + Refer to the stacks through separate pointers, to allow yyoverflow + to reallocate them elsewhere. */ + + /* The state stack. */ + yytype_int16 yyssa[YYINITDEPTH]; + yytype_int16 *yyss; + yytype_int16 *yyssp; + + /* The semantic value stack. */ + YYSTYPE yyvsa[YYINITDEPTH]; + YYSTYPE *yyvs; + YYSTYPE *yyvsp; + + YYSIZE_T yystacksize; + + int yyn; + int yyresult; + /* Lookahead token as an internal (translated) token number. */ + int yytoken = 0; + /* The variables used to return semantic value and location from the + action routines. */ + YYSTYPE yyval; + +#if YYERROR_VERBOSE + /* Buffer for error messages, and its allocated size. */ + char yymsgbuf[128]; + char *yymsg = yymsgbuf; + YYSIZE_T yymsg_alloc = sizeof yymsgbuf; +#endif + +#define YYPOPSTACK(N) (yyvsp -= (N), yyssp -= (N)) + + /* The number of symbols on the RHS of the reduced rule. + Keep to zero when no symbol should be popped. */ + int yylen = 0; + + yyssp = yyss = yyssa; + yyvsp = yyvs = yyvsa; + yystacksize = YYINITDEPTH; + + YYDPRINTF ((stderr, "Starting parse\n")); + + yystate = 0; + yyerrstatus = 0; + yynerrs = 0; + yychar = YYEMPTY; /* Cause a token to be read. */ + goto yysetstate; + + +/*------------------------------------------------------------. +| yynewstate -- push a new state, which is found in yystate. | +`------------------------------------------------------------*/ +yynewstate: + /* In all cases, when you get here, the value and location stacks + have just been pushed. So pushing a state here evens the stacks. */ + yyssp++; + + +/*--------------------------------------------------------------------. +| yynewstate -- set current state (the top of the stack) to yystate. | +`--------------------------------------------------------------------*/ +yysetstate: + YYDPRINTF ((stderr, "Entering state %d\n", yystate)); + YY_ASSERT (0 <= yystate && yystate < YYNSTATES); + *yyssp = (yytype_int16) yystate; + + if (yyss + yystacksize - 1 <= yyssp) +#if !defined yyoverflow && !defined YYSTACK_RELOCATE + goto yyexhaustedlab; +#else + { + /* Get the current used size of the three stacks, in elements. */ + YYSIZE_T yysize = (YYSIZE_T) (yyssp - yyss + 1); + +# if defined yyoverflow + { + /* 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; + yytype_int16 *yyss1 = yyss; + + /* Each stack pointer address is followed by the size of the + data in use in that stack, in bytes. This used to be a + conditional around just the two extra args, but that might + be undefined if yyoverflow is a macro. */ + yyoverflow (YY_("memory exhausted"), + &yyss1, yysize * sizeof (*yyssp), + &yyvs1, yysize * sizeof (*yyvsp), + &yystacksize); + yyss = yyss1; + yyvs = yyvs1; + } +# else /* defined YYSTACK_RELOCATE */ + /* Extend the stack our own way. */ + if (YYMAXDEPTH <= yystacksize) + goto yyexhaustedlab; + yystacksize *= 2; + if (YYMAXDEPTH < yystacksize) + yystacksize = YYMAXDEPTH; + + { + yytype_int16 *yyss1 = yyss; + union yyalloc *yyptr = + (union yyalloc *) YYSTACK_ALLOC (YYSTACK_BYTES (yystacksize)); + if (! yyptr) + goto yyexhaustedlab; + YYSTACK_RELOCATE (yyss_alloc, yyss); + YYSTACK_RELOCATE (yyvs_alloc, yyvs); +# undef YYSTACK_RELOCATE + if (yyss1 != yyssa) + YYSTACK_FREE (yyss1); + } +# endif + + yyssp = yyss + yysize - 1; + yyvsp = yyvs + yysize - 1; + + YYDPRINTF ((stderr, "Stack size increased to %lu\n", + (unsigned long) yystacksize)); + + if (yyss + yystacksize - 1 <= yyssp) + YYABORT; + } +#endif /* !defined yyoverflow && !defined YYSTACK_RELOCATE */ + + if (yystate == YYFINAL) + YYACCEPT; + + goto yybackup; + + +/*-----------. +| yybackup. | +`-----------*/ +yybackup: + /* Do appropriate processing given the current state. Read a + lookahead token if we need one and don't already have one. */ + + /* First try to decide what to do without reference to lookahead token. */ + yyn = yypact[yystate]; + if (yypact_value_is_default (yyn)) + goto yydefault; + + /* Not known => get a lookahead token if don't already have one. */ + + /* YYCHAR is either YYEMPTY or YYEOF or a valid lookahead symbol. */ + if (yychar == YYEMPTY) + { + YYDPRINTF ((stderr, "Reading a token: ")); + yychar = yylex (&yylval, pc); + } + + if (yychar <= YYEOF) + { + yychar = yytoken = YYEOF; + YYDPRINTF ((stderr, "Now at end of input.\n")); + } + else + { + yytoken = YYTRANSLATE (yychar); + YY_SYMBOL_PRINT ("Next token is", yytoken, &yylval, &yylloc); + } + + /* If the proper action on seeing token YYTOKEN is to reduce or to + detect an error, take that action. */ + yyn += yytoken; + if (yyn < 0 || YYLAST < yyn || yycheck[yyn] != yytoken) + goto yydefault; + yyn = yytable[yyn]; + if (yyn <= 0) + { + if (yytable_value_is_error (yyn)) + goto yyerrlab; + yyn = -yyn; + goto yyreduce; + } + + /* Count tokens shifted since error; after three, turn off error + status. */ + if (yyerrstatus) + yyerrstatus--; + + /* Shift the lookahead token. */ + YY_SYMBOL_PRINT ("Shifting", yytoken, &yylval, &yylloc); + + /* Discard the shifted token. */ + yychar = YYEMPTY; + + yystate = yyn; + YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN + *++yyvsp = yylval; + YY_IGNORE_MAYBE_UNINITIALIZED_END + goto yynewstate; + + +/*-----------------------------------------------------------. +| yydefault -- do the default action for the current state. | +`-----------------------------------------------------------*/ +yydefault: + yyn = yydefact[yystate]; + if (yyn == 0) + goto yyerrlab; + goto yyreduce; + + +/*-----------------------------. +| yyreduce -- do a reduction. | +`-----------------------------*/ +yyreduce: + /* yyn is the number of a rule to reduce with. */ + yylen = yyr2[yyn]; + + /* If YYLEN is nonzero, implement the default value of the action: + '$$ = $1'. + + Otherwise, the following line sets YYVAL to garbage. + This behavior is undocumented and Bison + users should not rely upon it. Assigning to YYVAL + unconditionally makes the parser a bit smaller, and it avoids a + GCC warning that YYVAL may be used uninitialized. */ + yyval = yyvsp[1-yylen]; + + + YY_REDUCE_PRINT (yyn); + switch (yyn) + { + case 4: +#line 326 "sys-utils/hwclock-parse-date.y" + { + pc->seconds = (yyvsp[0].timespec); + pc->timespec_seen = 1; + } +#line 1630 "sys-utils/hwclock-parse-date.c" + break; + + case 7: +#line 338 "sys-utils/hwclock-parse-date.y" + { + pc->times_seen++; pc->dates_seen++; + } +#line 1638 "sys-utils/hwclock-parse-date.c" + break; + + case 8: +#line 341 "sys-utils/hwclock-parse-date.y" + { + pc->times_seen++; + } +#line 1646 "sys-utils/hwclock-parse-date.c" + break; + + case 9: +#line 344 "sys-utils/hwclock-parse-date.y" + { + pc->local_zones_seen++; + } +#line 1654 "sys-utils/hwclock-parse-date.c" + break; + + case 10: +#line 347 "sys-utils/hwclock-parse-date.y" + { + pc->zones_seen++; + } +#line 1662 "sys-utils/hwclock-parse-date.c" + break; + + case 11: +#line 350 "sys-utils/hwclock-parse-date.y" + { + pc->dates_seen++; + } +#line 1670 "sys-utils/hwclock-parse-date.c" + break; + + case 12: +#line 353 "sys-utils/hwclock-parse-date.y" + { + pc->days_seen++; + } +#line 1678 "sys-utils/hwclock-parse-date.c" + break; + + case 18: +#line 370 "sys-utils/hwclock-parse-date.y" + { + set_hhmmss (pc, (yyvsp[-1].textintval).value, 0, 0, 0); + pc->meridian = (yyvsp[0].intval); + } +#line 1687 "sys-utils/hwclock-parse-date.c" + break; + + case 19: +#line 374 "sys-utils/hwclock-parse-date.y" + { + set_hhmmss (pc, (yyvsp[-3].textintval).value, (yyvsp[-1].textintval).value, 0, 0); + pc->meridian = (yyvsp[0].intval); + } +#line 1696 "sys-utils/hwclock-parse-date.c" + break; + + case 20: +#line 378 "sys-utils/hwclock-parse-date.y" + { + set_hhmmss (pc, (yyvsp[-5].textintval).value, (yyvsp[-3].textintval).value, (yyvsp[-1].timespec).tv_sec, (yyvsp[-1].timespec).tv_nsec); + pc->meridian = (yyvsp[0].intval); + } +#line 1705 "sys-utils/hwclock-parse-date.c" + break; + + case 22: +#line 386 "sys-utils/hwclock-parse-date.y" + { + set_hhmmss (pc, (yyvsp[-1].textintval).value, 0, 0, 0); + pc->meridian = MER24; + } +#line 1714 "sys-utils/hwclock-parse-date.c" + break; + + case 23: +#line 390 "sys-utils/hwclock-parse-date.y" + { + set_hhmmss (pc, (yyvsp[-3].textintval).value, (yyvsp[-1].textintval).value, 0, 0); + pc->meridian = MER24; + } +#line 1723 "sys-utils/hwclock-parse-date.c" + break; + + case 24: +#line 394 "sys-utils/hwclock-parse-date.y" + { + set_hhmmss (pc, (yyvsp[-5].textintval).value, (yyvsp[-3].textintval).value, (yyvsp[-1].timespec).tv_sec, (yyvsp[-1].timespec).tv_nsec); + pc->meridian = MER24; + } +#line 1732 "sys-utils/hwclock-parse-date.c" + break; + + case 27: +#line 406 "sys-utils/hwclock-parse-date.y" + { + pc->zones_seen++; + if (! time_zone_hhmm (pc, (yyvsp[-1].textintval), (yyvsp[0].textintval))) YYABORT; + } +#line 1741 "sys-utils/hwclock-parse-date.c" + break; + + case 28: +#line 431 "sys-utils/hwclock-parse-date.y" + { + pc->local_isdst = (yyvsp[0].intval); + pc->dsts_seen += (0 < (yyvsp[0].intval)); + } +#line 1750 "sys-utils/hwclock-parse-date.c" + break; + + case 29: +#line 435 "sys-utils/hwclock-parse-date.y" + { + pc->local_isdst = 1; + pc->dsts_seen += (0 < (yyvsp[-1].intval)) + 1; + } +#line 1759 "sys-utils/hwclock-parse-date.c" + break; + + case 30: +#line 446 "sys-utils/hwclock-parse-date.y" + { + pc->time_zone = (yyvsp[0].intval); + } +#line 1767 "sys-utils/hwclock-parse-date.c" + break; + + case 31: +#line 449 "sys-utils/hwclock-parse-date.y" + { + pc->time_zone = HOUR(7); + } +#line 1775 "sys-utils/hwclock-parse-date.c" + break; + + case 32: +#line 452 "sys-utils/hwclock-parse-date.y" + { + pc->time_zone = (yyvsp[-1].intval); + apply_relative_time (pc, (yyvsp[0].rel), 1); + } +#line 1784 "sys-utils/hwclock-parse-date.c" + break; + + case 33: +#line 456 "sys-utils/hwclock-parse-date.y" + { + pc->time_zone = HOUR(7); + apply_relative_time (pc, (yyvsp[0].rel), 1); + } +#line 1793 "sys-utils/hwclock-parse-date.c" + break; + + case 34: +#line 460 "sys-utils/hwclock-parse-date.y" + { + if (! time_zone_hhmm (pc, (yyvsp[-1].textintval), (yyvsp[0].textintval))) YYABORT; + pc->time_zone += (yyvsp[-2].intval); + } +#line 1802 "sys-utils/hwclock-parse-date.c" + break; + + case 35: +#line 464 "sys-utils/hwclock-parse-date.y" + { + pc->time_zone = (yyvsp[0].intval) + 60; + } +#line 1810 "sys-utils/hwclock-parse-date.c" + break; + + case 36: +#line 467 "sys-utils/hwclock-parse-date.y" + { + pc->time_zone = (yyvsp[-1].intval) + 60; + } +#line 1818 "sys-utils/hwclock-parse-date.c" + break; + + case 37: +#line 473 "sys-utils/hwclock-parse-date.y" + { + pc->day_ordinal = 0; + pc->day_number = (yyvsp[0].intval); + } +#line 1827 "sys-utils/hwclock-parse-date.c" + break; + + case 38: +#line 477 "sys-utils/hwclock-parse-date.y" + { + pc->day_ordinal = 0; + pc->day_number = (yyvsp[-1].intval); + } +#line 1836 "sys-utils/hwclock-parse-date.c" + break; + + case 39: +#line 481 "sys-utils/hwclock-parse-date.y" + { + pc->day_ordinal = (yyvsp[-1].intval); + pc->day_number = (yyvsp[0].intval); + } +#line 1845 "sys-utils/hwclock-parse-date.c" + break; + + case 40: +#line 485 "sys-utils/hwclock-parse-date.y" + { + pc->day_ordinal = (yyvsp[-1].textintval).value; + pc->day_number = (yyvsp[0].intval); + } +#line 1854 "sys-utils/hwclock-parse-date.c" + break; + + case 41: +#line 492 "sys-utils/hwclock-parse-date.y" + { + pc->month = (yyvsp[-2].textintval).value; + pc->day = (yyvsp[0].textintval).value; + } +#line 1863 "sys-utils/hwclock-parse-date.c" + break; + + case 42: +#line 496 "sys-utils/hwclock-parse-date.y" + { + /** + * Interpret as YYYY/MM/DD if the first value has 4 or more digits, + * otherwise as MM/DD/YY. + * The goal in recognizing YYYY/MM/DD is solely to support legacy + * machine-generated dates like those in an RCS log listing. If + * you want portability, use the ISO 8601 format. + */ + if (4 <= (yyvsp[-4].textintval).digits) { + pc->year = (yyvsp[-4].textintval); + pc->month = (yyvsp[-2].textintval).value; + pc->day = (yyvsp[0].textintval).value; + } else { + pc->month = (yyvsp[-4].textintval).value; + pc->day = (yyvsp[-2].textintval).value; + pc->year = (yyvsp[0].textintval); + } + } +#line 1886 "sys-utils/hwclock-parse-date.c" + break; + + case 43: +#line 514 "sys-utils/hwclock-parse-date.y" + { + /* e.g. 17-JUN-1992. */ + pc->day = (yyvsp[-2].textintval).value; + pc->month = (yyvsp[-1].intval); + pc->year.value = -(yyvsp[0].textintval).value; + pc->year.digits = (yyvsp[0].textintval).digits; + } +#line 1898 "sys-utils/hwclock-parse-date.c" + break; + + case 44: +#line 521 "sys-utils/hwclock-parse-date.y" + { + /* e.g. JUN-17-1992. */ + pc->month = (yyvsp[-2].intval); + pc->day = -(yyvsp[-1].textintval).value; + pc->year.value = -(yyvsp[0].textintval).value; + pc->year.digits = (yyvsp[0].textintval).digits; + } +#line 1910 "sys-utils/hwclock-parse-date.c" + break; + + case 45: +#line 528 "sys-utils/hwclock-parse-date.y" + { + pc->month = (yyvsp[-1].intval); + pc->day = (yyvsp[0].textintval).value; + } +#line 1919 "sys-utils/hwclock-parse-date.c" + break; + + case 46: +#line 532 "sys-utils/hwclock-parse-date.y" + { + pc->month = (yyvsp[-3].intval); + pc->day = (yyvsp[-2].textintval).value; + pc->year = (yyvsp[0].textintval); + } +#line 1929 "sys-utils/hwclock-parse-date.c" + break; + + case 47: +#line 537 "sys-utils/hwclock-parse-date.y" + { + pc->day = (yyvsp[-1].textintval).value; + pc->month = (yyvsp[0].intval); + } +#line 1938 "sys-utils/hwclock-parse-date.c" + break; + + case 48: +#line 541 "sys-utils/hwclock-parse-date.y" + { + pc->day = (yyvsp[-2].textintval).value; + pc->month = (yyvsp[-1].intval); + pc->year = (yyvsp[0].textintval); + } +#line 1948 "sys-utils/hwclock-parse-date.c" + break; + + case 50: +#line 550 "sys-utils/hwclock-parse-date.y" + { + /* ISO 8601 format.YYYY-MM-DD. */ + pc->year = (yyvsp[-2].textintval); + pc->month = -(yyvsp[-1].textintval).value; + pc->day = -(yyvsp[0].textintval).value; + } +#line 1959 "sys-utils/hwclock-parse-date.c" + break; + + case 51: +#line 560 "sys-utils/hwclock-parse-date.y" + { apply_relative_time (pc, (yyvsp[-1].rel), (yyvsp[0].intval)); } +#line 1965 "sys-utils/hwclock-parse-date.c" + break; + + case 52: +#line 562 "sys-utils/hwclock-parse-date.y" + { apply_relative_time (pc, (yyvsp[0].rel), 1); } +#line 1971 "sys-utils/hwclock-parse-date.c" + break; + + case 53: +#line 564 "sys-utils/hwclock-parse-date.y" + { apply_relative_time (pc, (yyvsp[0].rel), 1); } +#line 1977 "sys-utils/hwclock-parse-date.c" + break; + + case 54: +#line 569 "sys-utils/hwclock-parse-date.y" + { (yyval.rel) = RELATIVE_TIME_0; (yyval.rel).year = (yyvsp[-1].intval); } +#line 1983 "sys-utils/hwclock-parse-date.c" + break; + + case 55: +#line 571 "sys-utils/hwclock-parse-date.y" + { (yyval.rel) = RELATIVE_TIME_0; (yyval.rel).year = (yyvsp[-1].textintval).value; } +#line 1989 "sys-utils/hwclock-parse-date.c" + break; + + case 56: +#line 573 "sys-utils/hwclock-parse-date.y" + { (yyval.rel) = RELATIVE_TIME_0; (yyval.rel).year = 1; } +#line 1995 "sys-utils/hwclock-parse-date.c" + break; + + case 57: +#line 575 "sys-utils/hwclock-parse-date.y" + { (yyval.rel) = RELATIVE_TIME_0; (yyval.rel).month = (yyvsp[-1].intval); } +#line 2001 "sys-utils/hwclock-parse-date.c" + break; + + case 58: +#line 577 "sys-utils/hwclock-parse-date.y" + { (yyval.rel) = RELATIVE_TIME_0; (yyval.rel).month = (yyvsp[-1].textintval).value; } +#line 2007 "sys-utils/hwclock-parse-date.c" + break; + + case 59: +#line 579 "sys-utils/hwclock-parse-date.y" + { (yyval.rel) = RELATIVE_TIME_0; (yyval.rel).month = 1; } +#line 2013 "sys-utils/hwclock-parse-date.c" + break; + + case 60: +#line 581 "sys-utils/hwclock-parse-date.y" + { (yyval.rel) = RELATIVE_TIME_0; (yyval.rel).day = (yyvsp[-1].intval) * (yyvsp[0].intval); } +#line 2019 "sys-utils/hwclock-parse-date.c" + break; + + case 61: +#line 583 "sys-utils/hwclock-parse-date.y" + { (yyval.rel) = RELATIVE_TIME_0; (yyval.rel).day = (yyvsp[-1].textintval).value * (yyvsp[0].intval); } +#line 2025 "sys-utils/hwclock-parse-date.c" + break; + + case 62: +#line 585 "sys-utils/hwclock-parse-date.y" + { (yyval.rel) = RELATIVE_TIME_0; (yyval.rel).day = (yyvsp[0].intval); } +#line 2031 "sys-utils/hwclock-parse-date.c" + break; + + case 63: +#line 587 "sys-utils/hwclock-parse-date.y" + { (yyval.rel) = RELATIVE_TIME_0; (yyval.rel).hour = (yyvsp[-1].intval); } +#line 2037 "sys-utils/hwclock-parse-date.c" + break; + + case 64: +#line 589 "sys-utils/hwclock-parse-date.y" + { (yyval.rel) = RELATIVE_TIME_0; (yyval.rel).hour = (yyvsp[-1].textintval).value; } +#line 2043 "sys-utils/hwclock-parse-date.c" + break; + + case 65: +#line 591 "sys-utils/hwclock-parse-date.y" + { (yyval.rel) = RELATIVE_TIME_0; (yyval.rel).hour = 1; } +#line 2049 "sys-utils/hwclock-parse-date.c" + break; + + case 66: +#line 593 "sys-utils/hwclock-parse-date.y" + { (yyval.rel) = RELATIVE_TIME_0; (yyval.rel).minutes = (yyvsp[-1].intval); } +#line 2055 "sys-utils/hwclock-parse-date.c" + break; + + case 67: +#line 595 "sys-utils/hwclock-parse-date.y" + { (yyval.rel) = RELATIVE_TIME_0; (yyval.rel).minutes = (yyvsp[-1].textintval).value; } +#line 2061 "sys-utils/hwclock-parse-date.c" + break; + + case 68: +#line 597 "sys-utils/hwclock-parse-date.y" + { (yyval.rel) = RELATIVE_TIME_0; (yyval.rel).minutes = 1; } +#line 2067 "sys-utils/hwclock-parse-date.c" + break; + + case 69: +#line 599 "sys-utils/hwclock-parse-date.y" + { (yyval.rel) = RELATIVE_TIME_0; (yyval.rel).seconds = (yyvsp[-1].intval); } +#line 2073 "sys-utils/hwclock-parse-date.c" + break; + + case 70: +#line 601 "sys-utils/hwclock-parse-date.y" + { (yyval.rel) = RELATIVE_TIME_0; (yyval.rel).seconds = (yyvsp[-1].textintval).value; } +#line 2079 "sys-utils/hwclock-parse-date.c" + break; + + case 71: +#line 602 "sys-utils/hwclock-parse-date.y" + { + (yyval.rel) = RELATIVE_TIME_0; + (yyval.rel).seconds = (yyvsp[-1].timespec).tv_sec; + (yyval.rel).ns = (yyvsp[-1].timespec).tv_nsec; + } +#line 2089 "sys-utils/hwclock-parse-date.c" + break; + + case 72: +#line 607 "sys-utils/hwclock-parse-date.y" + { + (yyval.rel) = RELATIVE_TIME_0; + (yyval.rel).seconds = (yyvsp[-1].timespec).tv_sec; + (yyval.rel).ns = (yyvsp[-1].timespec).tv_nsec; + } +#line 2099 "sys-utils/hwclock-parse-date.c" + break; + + case 73: +#line 613 "sys-utils/hwclock-parse-date.y" + { (yyval.rel) = RELATIVE_TIME_0; (yyval.rel).seconds = 1; } +#line 2105 "sys-utils/hwclock-parse-date.c" + break; + + case 75: +#line 619 "sys-utils/hwclock-parse-date.y" + { (yyval.rel) = RELATIVE_TIME_0; (yyval.rel).year = (yyvsp[-1].textintval).value; } +#line 2111 "sys-utils/hwclock-parse-date.c" + break; + + case 76: +#line 621 "sys-utils/hwclock-parse-date.y" + { (yyval.rel) = RELATIVE_TIME_0; (yyval.rel).month = (yyvsp[-1].textintval).value; } +#line 2117 "sys-utils/hwclock-parse-date.c" + break; + + case 77: +#line 623 "sys-utils/hwclock-parse-date.y" + { (yyval.rel) = RELATIVE_TIME_0; (yyval.rel).day = (yyvsp[-1].textintval).value * (yyvsp[0].intval); } +#line 2123 "sys-utils/hwclock-parse-date.c" + break; + + case 78: +#line 625 "sys-utils/hwclock-parse-date.y" + { (yyval.rel) = RELATIVE_TIME_0; (yyval.rel).hour = (yyvsp[-1].textintval).value; } +#line 2129 "sys-utils/hwclock-parse-date.c" + break; + + case 79: +#line 627 "sys-utils/hwclock-parse-date.y" + { (yyval.rel) = RELATIVE_TIME_0; (yyval.rel).minutes = (yyvsp[-1].textintval).value; } +#line 2135 "sys-utils/hwclock-parse-date.c" + break; + + case 80: +#line 629 "sys-utils/hwclock-parse-date.y" + { (yyval.rel) = RELATIVE_TIME_0; (yyval.rel).seconds = (yyvsp[-1].textintval).value; } +#line 2141 "sys-utils/hwclock-parse-date.c" + break; + + case 81: +#line 634 "sys-utils/hwclock-parse-date.y" + { (yyval.rel) = RELATIVE_TIME_0; (yyval.rel).day = (yyvsp[0].intval); } +#line 2147 "sys-utils/hwclock-parse-date.c" + break; + + case 85: +#line 642 "sys-utils/hwclock-parse-date.y" + { (yyval.timespec).tv_sec = (yyvsp[0].textintval).value; (yyval.timespec).tv_nsec = 0; } +#line 2153 "sys-utils/hwclock-parse-date.c" + break; + + case 87: +#line 648 "sys-utils/hwclock-parse-date.y" + { (yyval.timespec).tv_sec = (yyvsp[0].textintval).value; (yyval.timespec).tv_nsec = 0; } +#line 2159 "sys-utils/hwclock-parse-date.c" + break; + + case 88: +#line 653 "sys-utils/hwclock-parse-date.y" + { digits_to_date_time (pc, (yyvsp[0].textintval)); } +#line 2165 "sys-utils/hwclock-parse-date.c" + break; + + case 89: +#line 657 "sys-utils/hwclock-parse-date.y" + { + /** + * Hybrid all-digit and relative offset, so that we accept e.g., + * "YYYYMMDD +N days" as well as "YYYYMMDD N days". + */ + digits_to_date_time (pc, (yyvsp[-1].textintval)); + apply_relative_time (pc, (yyvsp[0].rel), 1); + } +#line 2178 "sys-utils/hwclock-parse-date.c" + break; + + case 90: +#line 669 "sys-utils/hwclock-parse-date.y" + { (yyval.textintval).value = (yyval.textintval).digits = 0; } +#line 2184 "sys-utils/hwclock-parse-date.c" + break; + + case 91: +#line 670 "sys-utils/hwclock-parse-date.y" + { + (yyval.textintval) = (yyvsp[0].textintval); + } +#line 2192 "sys-utils/hwclock-parse-date.c" + break; + + +#line 2196 "sys-utils/hwclock-parse-date.c" + + default: break; + } + /* User semantic actions sometimes alter yychar, and that requires + that yytoken be updated with the new translation. We take the + approach of translating immediately before every use of yytoken. + One alternative is translating here after every semantic action, + but that translation would be missed if the semantic action invokes + YYABORT, YYACCEPT, or YYERROR immediately after altering yychar or + if it invokes YYBACKUP. In the case of YYABORT or YYACCEPT, an + incorrect destructor might then be invoked immediately. In the + case of YYERROR or YYBACKUP, subsequent parser actions might lead + to an incorrect destructor call or verbose syntax error message + before the lookahead is translated. */ + YY_SYMBOL_PRINT ("-> $$ =", yyr1[yyn], &yyval, &yyloc); + + YYPOPSTACK (yylen); + yylen = 0; + YY_STACK_PRINT (yyss, yyssp); + + *++yyvsp = yyval; + + /* 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. */ + { + const int yylhs = yyr1[yyn] - YYNTOKENS; + const int yyi = yypgoto[yylhs] + *yyssp; + yystate = (0 <= yyi && yyi <= YYLAST && yycheck[yyi] == *yyssp + ? yytable[yyi] + : yydefgoto[yylhs]); + } + + goto yynewstate; + + +/*--------------------------------------. +| yyerrlab -- here on detecting error. | +`--------------------------------------*/ +yyerrlab: + /* Make sure we have latest lookahead translation. See comments at + user semantic actions for why this is necessary. */ + yytoken = yychar == YYEMPTY ? YYEMPTY : YYTRANSLATE (yychar); + + /* If not already recovering from an error, report this error. */ + if (!yyerrstatus) + { + ++yynerrs; +#if ! YYERROR_VERBOSE + yyerror (pc, YY_("syntax error")); +#else +# define YYSYNTAX_ERROR yysyntax_error (&yymsg_alloc, &yymsg, \ + yyssp, yytoken) + { + char const *yymsgp = YY_("syntax error"); + int yysyntax_error_status; + yysyntax_error_status = YYSYNTAX_ERROR; + if (yysyntax_error_status == 0) + yymsgp = yymsg; + else if (yysyntax_error_status == 1) + { + if (yymsg != yymsgbuf) + YYSTACK_FREE (yymsg); + yymsg = (char *) YYSTACK_ALLOC (yymsg_alloc); + if (!yymsg) + { + yymsg = yymsgbuf; + yymsg_alloc = sizeof yymsgbuf; + yysyntax_error_status = 2; + } + else + { + yysyntax_error_status = YYSYNTAX_ERROR; + yymsgp = yymsg; + } + } + yyerror (pc, yymsgp); + if (yysyntax_error_status == 2) + goto yyexhaustedlab; + } +# undef YYSYNTAX_ERROR +#endif + } + + + + if (yyerrstatus == 3) + { + /* If just tried and failed to reuse lookahead token after an + error, discard it. */ + + if (yychar <= YYEOF) + { + /* Return failure if at end of input. */ + if (yychar == YYEOF) + YYABORT; + } + else + { + yydestruct ("Error: discarding", + yytoken, &yylval, pc); + yychar = YYEMPTY; + } + } + + /* Else will try to reuse lookahead token after shifting the error + token. */ + goto yyerrlab1; + + +/*---------------------------------------------------. +| yyerrorlab -- error raised explicitly by YYERROR. | +`---------------------------------------------------*/ +yyerrorlab: + /* Pacify compilers when the user code never invokes YYERROR and the + label yyerrorlab therefore never appears in user code. */ + if (0) + YYERROR; + + /* Do not reclaim the symbols of the rule whose action triggered + this YYERROR. */ + YYPOPSTACK (yylen); + yylen = 0; + YY_STACK_PRINT (yyss, yyssp); + yystate = *yyssp; + goto yyerrlab1; + + +/*-------------------------------------------------------------. +| yyerrlab1 -- common code for both syntax error and YYERROR. | +`-------------------------------------------------------------*/ +yyerrlab1: + yyerrstatus = 3; /* Each real token shifted decrements this. */ + + for (;;) + { + yyn = yypact[yystate]; + if (!yypact_value_is_default (yyn)) + { + yyn += YYTERROR; + if (0 <= yyn && yyn <= YYLAST && yycheck[yyn] == YYTERROR) + { + yyn = yytable[yyn]; + if (0 < yyn) + break; + } + } + + /* Pop the current state because it cannot handle the error token. */ + if (yyssp == yyss) + YYABORT; + + + yydestruct ("Error: popping", + yystos[yystate], yyvsp, pc); + YYPOPSTACK (1); + yystate = *yyssp; + YY_STACK_PRINT (yyss, yyssp); + } + + YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN + *++yyvsp = yylval; + YY_IGNORE_MAYBE_UNINITIALIZED_END + + + /* Shift the error token. */ + YY_SYMBOL_PRINT ("Shifting", yystos[yyn], yyvsp, yylsp); + + yystate = yyn; + goto yynewstate; + + +/*-------------------------------------. +| yyacceptlab -- YYACCEPT comes here. | +`-------------------------------------*/ +yyacceptlab: + yyresult = 0; + goto yyreturn; + + +/*-----------------------------------. +| yyabortlab -- YYABORT comes here. | +`-----------------------------------*/ +yyabortlab: + yyresult = 1; + goto yyreturn; + + +#if !defined yyoverflow || YYERROR_VERBOSE +/*-------------------------------------------------. +| yyexhaustedlab -- memory exhaustion comes here. | +`-------------------------------------------------*/ +yyexhaustedlab: + yyerror (pc, YY_("memory exhausted")); + yyresult = 2; + /* Fall through. */ +#endif + + +/*-----------------------------------------------------. +| yyreturn -- parsing is finished, return the result. | +`-----------------------------------------------------*/ +yyreturn: + if (yychar != YYEMPTY) + { + /* Make sure we have latest lookahead translation. See comments at + user semantic actions for why this is necessary. */ + yytoken = YYTRANSLATE (yychar); + yydestruct ("Cleanup: discarding lookahead", + yytoken, &yylval, pc); + } + /* Do not reclaim the symbols of the rule whose action triggered + this YYABORT or YYACCEPT. */ + YYPOPSTACK (yylen); + YY_STACK_PRINT (yyss, yyssp); + while (yyssp != yyss) + { + yydestruct ("Cleanup: popping", + yystos[*yyssp], yyvsp, pc); + YYPOPSTACK (1); + } +#ifndef yyoverflow + if (yyss != yyssa) + YYSTACK_FREE (yyss); +#endif +#if YYERROR_VERBOSE + if (yymsg != yymsgbuf) + YYSTACK_FREE (yymsg); +#endif + return yyresult; +} +#line 675 "sys-utils/hwclock-parse-date.y" + + +static table const meridian_table[] = { + { "AM", tMERIDIAN, MERam }, + { "A.M.", tMERIDIAN, MERam }, + { "PM", tMERIDIAN, MERpm }, + { "P.M.", tMERIDIAN, MERpm }, + { NULL, 0, 0 } +}; + +static table const dst_table[] = { + { "DST", tDST, 0 } +}; + +static table const month_and_day_table[] = { + { "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, 0, 0 } +}; + +static table const time_units_table[] = { + { "YEAR", tYEAR_UNIT, 1 }, + { "MONTH", tMONTH_UNIT, 1 }, + { "FORTNIGHT",tDAY_UNIT, 14 }, + { "WEEK", tDAY_UNIT, 7 }, + { "DAY", tDAY_UNIT, 1 }, + { "HOUR", tHOUR_UNIT, 1 }, + { "MINUTE", tMINUTE_UNIT, 1 }, + { "MIN", tMINUTE_UNIT, 1 }, + { "SECOND", tSEC_UNIT, 1 }, + { "SEC", tSEC_UNIT, 1 }, + { NULL, 0, 0 } +}; + +/* Assorted relative-time words. */ +static table const relative_time_table[] = { + { "TOMORROW", tDAY_SHIFT, 1 }, + { "YESTERDAY",tDAY_SHIFT, -1 }, + { "TODAY", tDAY_SHIFT, 0 }, + { "NOW", tDAY_SHIFT, 0 }, + { "LAST", tORDINAL, -1 }, + { "THIS", tORDINAL, 0 }, + { "NEXT", tORDINAL, 1 }, + { "FIRST", tORDINAL, 1 }, + /*{ "SECOND", tORDINAL, 2 }, */ + { "THIRD", tORDINAL, 3 }, + { "FOURTH", tORDINAL, 4 }, + { "FIFTH", tORDINAL, 5 }, + { "SIXTH", tORDINAL, 6 }, + { "SEVENTH", tORDINAL, 7 }, + { "EIGHTH", tORDINAL, 8 }, + { "NINTH", tORDINAL, 9 }, + { "TENTH", tORDINAL, 10 }, + { "ELEVENTH", tORDINAL, 11 }, + { "TWELFTH", tORDINAL, 12 }, + { "AGO", tAGO, -1 }, + { "HENCE", tAGO, 1 }, + { NULL, 0, 0 } +}; + +/** + * The universal time zone table. These labels can be used even for + * timestamps that would not otherwise be valid, e.g., GMT timestamps + * in London during summer. + */ +static table const universal_time_zone_table[] = { + { "GMT", tZONE, HOUR ( 0) }, /* Greenwich Mean */ + { "UT", tZONE, HOUR ( 0) }, /* Universal (Coordinated) */ + { "UTC", tZONE, HOUR ( 0) }, + { NULL, 0, 0 } +}; + +/** + * The time zone table. This table is necessarily incomplete, as time + * zone abbreviations are ambiguous; e.g. Australians interpret "EST" + * as Eastern time in Australia, not as US Eastern Standard Time. + * You cannot rely on parse_date to handle arbitrary time zone + * abbreviations; use numeric abbreviations like "-0500" instead. + */ +static table const time_zone_table[] = { + { "WET", tZONE, HOUR ( 0) }, /* Western European */ + { "WEST", tDAYZONE, HOUR ( 0) }, /* Western European Summer */ + { "BST", tDAYZONE, HOUR ( 0) }, /* British Summer */ + { "ART", tZONE, -HOUR ( 3) }, /* Argentina */ + { "BRT", tZONE, -HOUR ( 3) }, /* Brazil */ + { "BRST", tDAYZONE, -HOUR ( 3) }, /* Brazil Summer */ + { "NST", tZONE, -(HOUR ( 3) + 30) }, /* Newfoundland Standard */ + { "NDT", tDAYZONE,-(HOUR ( 3) + 30) }, /* Newfoundland Daylight */ + { "AST", tZONE, -HOUR ( 4) }, /* Atlantic Standard */ + { "ADT", tDAYZONE, -HOUR ( 4) }, /* Atlantic Daylight */ + { "CLT", tZONE, -HOUR ( 4) }, /* Chile */ + { "CLST", tDAYZONE, -HOUR ( 4) }, /* Chile Summer */ + { "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 */ + { "AKST", tZONE, -HOUR ( 9) }, /* Alaska Standard */ + { "AKDT", tDAYZONE, -HOUR ( 9) }, /* Alaska Daylight */ + { "HST", tZONE, -HOUR (10) }, /* Hawaii Standard */ + { "HAST", tZONE, -HOUR (10) }, /* Hawaii-Aleutian Standard */ + { "HADT", tDAYZONE, -HOUR (10) }, /* Hawaii-Aleutian Daylight */ + { "SST", tZONE, -HOUR (12) }, /* Samoa Standard */ + { "WAT", tZONE, HOUR ( 1) }, /* West Africa */ + { "CET", tZONE, HOUR ( 1) }, /* Central European */ + { "CEST", tDAYZONE, HOUR ( 1) }, /* Central European Summer */ + { "MET", tZONE, HOUR ( 1) }, /* Middle European */ + { "MEZ", tZONE, HOUR ( 1) }, /* Middle European */ + { "MEST", tDAYZONE, HOUR ( 1) }, /* Middle European Summer */ + { "MESZ", tDAYZONE, HOUR ( 1) }, /* Middle European Summer */ + { "EET", tZONE, HOUR ( 2) }, /* Eastern European */ + { "EEST", tDAYZONE, HOUR ( 2) }, /* Eastern European Summer */ + { "CAT", tZONE, HOUR ( 2) }, /* Central Africa */ + { "SAST", tZONE, HOUR ( 2) }, /* South Africa Standard */ + { "EAT", tZONE, HOUR ( 3) }, /* East Africa */ + { "MSK", tZONE, HOUR ( 3) }, /* Moscow */ + { "MSD", tDAYZONE, HOUR ( 3) }, /* Moscow Daylight */ + { "IST", tZONE, (HOUR ( 5) + 30) }, /* India Standard */ + { "SGT", tZONE, HOUR ( 8) }, /* Singapore */ + { "KST", tZONE, HOUR ( 9) }, /* Korea Standard */ + { "JST", tZONE, HOUR ( 9) }, /* Japan Standard */ + { "GST", tZONE, HOUR (10) }, /* Guam Standard */ + { "NZST", tZONE, HOUR (12) }, /* New Zealand Standard */ + { "NZDT", tDAYZONE, HOUR (12) }, /* New Zealand Daylight */ + { NULL, 0, 0 } +}; + +/** + * Military time zone table. + * + * Note 'T' is a special case, as it is used as the separator in ISO + * 8601 date and time of day representation. + */ +static table const military_table[] = { + { "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", 'T', 0 }, + { "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, 0, 0 } +}; + +/** + * Convert a time offset expressed as HH:MM or HHMM into an integer count of + * minutes. If hh is more than 2 digits then it is of the form HHMM and must be + * delimited; in that case 'mm' is required to be absent. Otherwise, hh and mm + * are used ('mm' contains digits that were prefixed with a colon). + * + * POSIX TZ and ISO 8601 both define the maximum offset as 24:59. POSIX also + * allows seconds, but currently the parser rejects them. Both require minutes + * to be zero padded (2 digits). ISO requires hours to be zero padded, POSIX + * does not, either is accepted; which means an invalid ISO offset could pass. + */ + +static int time_zone_hhmm(parser_control *pc, textint hh, textint mm) +{ + int h, m; + + if (hh.digits > 2 && hh.digits < 5 && mm.digits == 0) { + h = hh.value / 100; + m = hh.value % 100; + } else if (hh.digits < 3 && (mm.digits == 0 || mm.digits == 2)) { + h = hh.value; + m = hh.negative ? -mm.value : mm.value; + } else + return 0; + + if (abs(h) > 24 || abs(m) > 59) + return 0; + + pc->time_zone = h * 60 + m; + return 1; +} + +static int to_hour(intmax_t hours, int meridian) +{ + switch (meridian) { + default: /* Pacify GCC. */ + case MER24: + return 0 <= hours && hours < 24 ? hours : -1; + case MERam: + return 0 < hours && hours < 12 ? hours : hours == 12 ? 0 : -1; + case MERpm: + return 0 < hours && hours < 12 ? hours + 12 : hours == 12 ? 12 : -1; + } +} + +static long int to_year(textint textyear) +{ + intmax_t year = textyear.value; + + if (year < 0) + year = -year; + + /** + * XPG4 suggests that years 00-68 map to 2000-2068, and + * years 69-99 map to 1969-1999. + */ + else if (textyear.digits == 2) + year += year < 69 ? 2000 : 1900; + + return year; +} + +static table const * lookup_zone(parser_control const *pc, char const *name) +{ + table const *tp; + + for (tp = universal_time_zone_table; tp->name; tp++) + if (strcmp (name, tp->name) == 0) + return tp; + + /** + * Try local zone abbreviations before those in time_zone_table, as + * the local ones are more likely to be right. + */ + for (tp = pc->local_time_zone_table; tp->name; tp++) + if (strcmp (name, tp->name) == 0) + return tp; + + for (tp = time_zone_table; tp->name; tp++) + if (strcmp (name, tp->name) == 0) + return tp; + + return NULL; +} + +#if ! HAVE_TM_GMTOFF +/** + * Yield the difference between *A and *B, + * measured in seconds, ignoring leap seconds. + * The body of this function is taken directly from the GNU C Library; + * see src/strftime.c. + */ +static int tm_diff(struct tm const *a, struct tm const *b) +{ + /** + * Compute intervening leap days correctly even if year is negative. + * Take care to avoid int overflow in leap day calculations. + */ + int a4 = SHR (a->tm_year, 2) + SHR (TM_YEAR_BASE, 2) - ! (a->tm_year & 3); + int b4 = SHR (b->tm_year, 2) + SHR (TM_YEAR_BASE, 2) - ! (b->tm_year & 3); + int a100 = a4 / 25 - (a4 % 25 < 0); + int b100 = b4 / 25 - (b4 % 25 < 0); + int a400 = SHR (a100, 2); + int b400 = SHR (b100, 2); + int intervening_leap_days = (a4 - b4) - (a100 - b100) + (a400 - b400); + int years = a->tm_year - b->tm_year; + int days = (365 * years + intervening_leap_days + + (a->tm_yday - b->tm_yday)); + return (60 * (60 * (24 * days + (a->tm_hour - b->tm_hour)) + + (a->tm_min - b->tm_min)) + + (a->tm_sec - b->tm_sec)); +} +#endif /* ! HAVE_TM_GMTOFF */ + +static table const * lookup_word(parser_control const *pc, char *word) +{ + char *p; + char *q; + size_t wordlen; + table const *tp; + int period_found; + int abbrev; + + /* Make it uppercase. */ + for (p = word; *p; p++) + *p = c_toupper (to_uchar (*p)); + + for (tp = meridian_table; tp->name; tp++) + if (strcmp (word, tp->name) == 0) + return tp; + + /* See if we have an abbreviation for a month. */ + wordlen = strlen (word); + abbrev = wordlen == 3 || (wordlen == 4 && word[3] == '.'); + + for (tp = month_and_day_table; tp->name; tp++) + if ((abbrev ? strncmp (word, tp->name, 3) : + strcmp (word, tp->name)) == 0) + return tp; + + if ((tp = lookup_zone (pc, word))) + return tp; + + if (strcmp (word, dst_table[0].name) == 0) + return dst_table; + + for (tp = time_units_table; tp->name; tp++) + if (strcmp (word, tp->name) == 0) + return tp; + + /* Strip off any plural and try the units table again. */ + if (word[wordlen - 1] == 'S') { + word[wordlen - 1] = '\0'; + for (tp = time_units_table; tp->name; tp++) + if (strcmp (word, tp->name) == 0) + return tp; + word[wordlen - 1] = 'S'; /* For "this" in relative_time_table. */ + } + + for (tp = relative_time_table; tp->name; tp++) + if (strcmp (word, tp->name) == 0) + return tp; + + /* Military time zones. */ + if (wordlen == 1) + for (tp = military_table; tp->name; tp++) + if (word[0] == tp->name[0]) + return tp; + + /* Drop out any periods and try the time zone table again. */ + for (period_found = 0, p = q = word; (*p = *q); q++) + if (*q == '.') + period_found = 1; + else + p++; + if (period_found && (tp = lookup_zone (pc, word))) + return tp; + + return NULL; +} + +static int yylex (union YYSTYPE *lvalp, parser_control *pc) +{ + unsigned char c; + size_t count; + + for (;;) { + while (c = *pc->input, c_isspace (c)) + pc->input++; + + if (c_isdigit (c) || c == '-' || c == '+') { + char const *p; + int sign; + uintmax_t value; + if (c == '-' || c == '+') { + sign = c == '-' ? -1 : 1; + while (c = *++pc->input, c_isspace (c)) + continue; + if (! c_isdigit (c)) + /* skip the '-' sign */ + continue; + } else + sign = 0; + p = pc->input; + for (value = 0; ; value *= 10) { + uintmax_t value1 = value + (c - '0'); + if (value1 < value) + return '?'; + value = value1; + c = *++p; + if (! c_isdigit (c)) + break; + if (UINTMAX_MAX / 10 < value) + return '?'; + } + if ((c == '.' || c == ',') && c_isdigit (p[1])) { + time_t s; + int ns; + int digits; + uintmax_t value1; + + /* Check for overflow when converting value to + * time_t. + */ + if (sign < 0) { + s = - value; + if (0 < s) + return '?'; + value1 = -s; + } else { + s = value; + if (s < 0) + return '?'; + value1 = s; + } + if (value != value1) + return '?'; + + /* Accumulate fraction, to ns precision. */ + p++; + ns = *p++ - '0'; + for (digits = 2; + digits <= LOG10_BILLION; digits++) { + ns *= 10; + if (c_isdigit (*p)) + ns += *p++ - '0'; + } + + /* Skip excess digits, truncating toward + * -Infinity. + */ + if (sign < 0) + for (; c_isdigit (*p); p++) + if (*p != '0') { + ns++; + break; + } + while (c_isdigit (*p)) + p++; + + /* Adjust to the timespec convention, which is + * that tv_nsec is always a positive offset even + * if tv_sec is negative. + */ + if (sign < 0 && ns) { + s--; + if (! (s < 0)) + return '?'; + ns = BILLION - ns; + } + + lvalp->timespec.tv_sec = s; + lvalp->timespec.tv_nsec = ns; + pc->input = p; + return + sign ? tSDECIMAL_NUMBER : tUDECIMAL_NUMBER; + } else { + lvalp->textintval.negative = sign < 0; + if (sign < 0) { + lvalp->textintval.value = - value; + if (0 < lvalp->textintval.value) + return '?'; + } else { + lvalp->textintval.value = value; + if (lvalp->textintval.value < 0) + return '?'; + } + lvalp->textintval.digits = p - pc->input; + pc->input = p; + return sign ? tSNUMBER : tUNUMBER; + } + } + + if (c_isalpha (c)) { + char buff[20]; + char *p = buff; + table const *tp; + + do { + if (p < buff + sizeof buff - 1) + *p++ = c; + c = *++pc->input; + } + while (c_isalpha (c) || c == '.'); + + *p = '\0'; + tp = lookup_word (pc, buff); + if (! tp) { + return '?'; + } + lvalp->intval = tp->value; + return tp->type; + } + + if (c != '(') + return to_uchar (*pc->input++); + + count = 0; + do { + c = *pc->input++; + if (c == '\0') + return c; + if (c == '(') + count++; + else if (c == ')') + count--; + } + while (count != 0); + } +} + +/* Do nothing if the parser reports an error. */ +static int yyerror(parser_control const *pc __attribute__((__unused__)), + char const *s __attribute__((__unused__))) +{ + return 0; +} + +/** + * If *TM0 is the old and *TM1 is the new value of a struct tm after + * passing it to mktime, return 1 if it's OK that mktime returned T. + * It's not OK if *TM0 has out-of-range members. + */ + +static int mktime_ok(struct tm const *tm0, struct tm const *tm1, time_t t) +{ + if (t == (time_t) -1) { + /** + * Guard against falsely reporting an error when parsing a + * timestamp that happens to equal (time_t) -1, on a host that + * supports such a timestamp. + */ + tm1 = localtime (&t); + if (!tm1) + return 0; + } + + return ! ((tm0->tm_sec ^ tm1->tm_sec) + | (tm0->tm_min ^ tm1->tm_min) + | (tm0->tm_hour ^ tm1->tm_hour) + | (tm0->tm_mday ^ tm1->tm_mday) + | (tm0->tm_mon ^ tm1->tm_mon) + | (tm0->tm_year ^ tm1->tm_year)); +} + +/** + * A reasonable upper bound for the size of ordinary TZ strings. + * Use heap allocation if TZ's length exceeds this. + */ +enum { TZBUFSIZE = 100 }; + +/** + * Return a copy of TZ, stored in TZBUF if it fits, and heap-allocated + * otherwise. + */ +static char * get_tz(char tzbuf[TZBUFSIZE]) +{ + char *tz = getenv ("TZ"); + if (tz) { + size_t tzsize = strlen (tz) + 1; + tz = (tzsize <= TZBUFSIZE + ? memcpy (tzbuf, tz, tzsize) + : strdup (tz)); + } + return tz; +} + +/** + * Parse a date/time string, storing the resulting time value into *result. + * The string itself is pointed to by *p. Return 1 if successful. + * *p can be an incomplete or relative time specification; if so, use + * *now as the basis for the returned time. + */ +int parse_date(struct timespec *result, char const *p, + struct timespec const *now) +{ + time_t Start; + intmax_t Start_ns; + struct tm const *tmp; + struct tm tm; + struct tm tm0; + parser_control pc; + struct timespec gettime_buffer; + unsigned char c; + int tz_was_altered = 0; + char *tz0 = NULL; + char tz0buf[TZBUFSIZE]; + int ok = 1; + struct timeval tv; + + if (! now) { + gettimeofday (&tv, NULL); + gettime_buffer.tv_sec = tv.tv_sec; + gettime_buffer.tv_nsec = tv.tv_usec * 1000; + now = &gettime_buffer; + } + + Start = now->tv_sec; + Start_ns = now->tv_nsec; + + tmp = localtime (&now->tv_sec); + if (! tmp) + return 0; + + while (c = *p, c_isspace (c)) + p++; + + if (strncmp (p, "TZ=\"", 4) == 0) { + char const *tzbase = p + 4; + size_t tzsize = 1; + char const *s; + + for (s = tzbase; *s; s++, tzsize++) + if (*s == '\\') { + s++; + if (! (*s == '\\' || *s == '"')) + break; + } else if (*s == '"') { + char *z; + char *tz1; + char tz1buf[TZBUFSIZE]; + int large_tz = TZBUFSIZE < tzsize; + int setenv_ok; + + tz0 = get_tz (tz0buf); + if (!tz0) + goto fail; + + if (large_tz) { + z = tz1 = malloc (tzsize); + if (!tz1) + goto fail; + } else + z = tz1 = tz1buf; + + for (s = tzbase; *s != '"'; s++) + *z++ = *(s += *s == '\\'); + *z = '\0'; + setenv_ok = setenv ("TZ", tz1, 1) == 0; + if (large_tz) + free (tz1); + if (!setenv_ok) + goto fail; + tz_was_altered = 1; + + p = s + 1; + while (c = *p, c_isspace (c)) + p++; + + break; + } + } + + /** + * As documented, be careful to treat the empty string just like + * a date string of "0". Without this, an empty string would be + * declared invalid when parsed during a DST transition. + */ + if (*p == '\0') + p = "0"; + + pc.input = p; + pc.year.value = tmp->tm_year; + pc.year.value += TM_YEAR_BASE; + pc.year.digits = 0; + pc.month = tmp->tm_mon + 1; + pc.day = tmp->tm_mday; + pc.hour = tmp->tm_hour; + pc.minutes = tmp->tm_min; + pc.seconds.tv_sec = tmp->tm_sec; + pc.seconds.tv_nsec = Start_ns; + tm.tm_isdst = tmp->tm_isdst; + + pc.meridian = MER24; + pc.rel = RELATIVE_TIME_0; + pc.timespec_seen = 0; + pc.rels_seen = 0; + pc.dates_seen = 0; + pc.days_seen = 0; + pc.times_seen = 0; + pc.local_zones_seen = 0; + pc.dsts_seen = 0; + pc.zones_seen = 0; + +#if HAVE_STRUCT_TM_TM_ZONE + pc.local_time_zone_table[0].name = tmp->tm_zone; + pc.local_time_zone_table[0].type = tLOCAL_ZONE; + pc.local_time_zone_table[0].value = tmp->tm_isdst; + pc.local_time_zone_table[1].name = NULL; + + /** + * Probe the names used in the next three calendar quarters, looking + * for a tm_isdst different from the one we already have. + */ + { + int quarter; + for (quarter = 1; quarter <= 3; quarter++) { + time_t probe = Start + quarter * (90 * 24 * 60 * 60); + struct tm const *probe_tm = localtime (&probe); + if (probe_tm && probe_tm->tm_zone + && probe_tm->tm_isdst + != pc.local_time_zone_table[0].value) { + { + pc.local_time_zone_table[1].name + = probe_tm->tm_zone; + pc.local_time_zone_table[1].type + = tLOCAL_ZONE; + pc.local_time_zone_table[1].value + = probe_tm->tm_isdst; + pc.local_time_zone_table[2].name + = NULL; + } + break; + } + } + } +#else +#if HAVE_TZNAME + { +# if !HAVE_DECL_TZNAME + extern char *tzname[]; +# endif + int i; + for (i = 0; i < 2; i++) { + pc.local_time_zone_table[i].name = tzname[i]; + pc.local_time_zone_table[i].type = tLOCAL_ZONE; + pc.local_time_zone_table[i].value = i; + } + pc.local_time_zone_table[i].name = NULL; + } +#else + pc.local_time_zone_table[0].name = NULL; +#endif +#endif + + if (pc.local_time_zone_table[0].name && pc.local_time_zone_table[1].name + && ! strcmp (pc.local_time_zone_table[0].name, + pc.local_time_zone_table[1].name)) { + /** + * This locale uses the same abbreviation for standard and + * daylight times. So if we see that abbreviation, we don't + * know whether it's daylight time. + */ + pc.local_time_zone_table[0].value = -1; + pc.local_time_zone_table[1].name = NULL; + } + + if (yyparse (&pc) != 0) { + goto fail; + } + + if (pc.timespec_seen) + *result = pc.seconds; + else { + if (1 < (pc.times_seen | pc.dates_seen | pc.days_seen + | pc.dsts_seen + | (pc.local_zones_seen + pc.zones_seen))) { + goto fail; + } + + tm.tm_year = to_year (pc.year) - TM_YEAR_BASE; + tm.tm_mon = pc.month - 1; + tm.tm_mday = pc.day; + if (pc.times_seen || (pc.rels_seen && + ! pc.dates_seen && ! pc.days_seen)) { + tm.tm_hour = to_hour (pc.hour, pc.meridian); + if (tm.tm_hour < 0) { + goto fail; + } + tm.tm_min = pc.minutes; + tm.tm_sec = pc.seconds.tv_sec; + } else { + tm.tm_hour = tm.tm_min = tm.tm_sec = 0; + pc.seconds.tv_nsec = 0; + } + + /** + * Let mktime deduce tm_isdst if we have an absolute timestamp. + */ + if (pc.dates_seen | pc.days_seen | pc.times_seen) + tm.tm_isdst = -1; + + /** + * But if the input explicitly specifies local time with or + * without DST, give mktime that information. + */ + if (pc.local_zones_seen) + tm.tm_isdst = pc.local_isdst; + + tm0 = tm; + + Start = mktime (&tm); + + if (! mktime_ok (&tm0, &tm, Start)) { + if (! pc.zones_seen) { + goto fail; + } else { + /** Guard against falsely reporting errors near + * the time_t boundaries when parsing times in + * other time zones. For example, suppose the + * input string "1969-12-31 23:00:00 -0100", the + * current time zone is 8 hours ahead of UTC, + * and the min time_t value is 1970-01-01 + * 00:00:00 UTC. Then the min localtime value + * is 1970-01-01 08:00:00, and mktime will + * therefore fail on 1969-12-31 23:00:00. To + * work around the problem, set the time zone to + * 1 hour behind UTC temporarily by setting + * TZ="XXX1:00" and try mktime again. + */ + + intmax_t time_zone = pc.time_zone; + + intmax_t abs_time_zone = time_zone < 0 + ? - time_zone : time_zone; + + intmax_t abs_time_zone_hour + = abs_time_zone / 60; + + int abs_time_zone_min = abs_time_zone % 60; + + char tz1buf[sizeof "XXX+0:00" + + sizeof pc.time_zone + * CHAR_BIT / 3]; + + if (!tz_was_altered) + tz0 = get_tz (tz0buf); + sprintf (tz1buf, "XXX%s%jd:%02d", + &"-"[time_zone < 0], + abs_time_zone_hour, + abs_time_zone_min); + if (setenv ("TZ", tz1buf, 1) != 0) { + goto fail; + } + tz_was_altered = 1; + tm = tm0; + Start = mktime (&tm); + if (! mktime_ok (&tm0, &tm, Start)) { + goto fail; + } + } + } + + if (pc.days_seen && ! pc.dates_seen) { + tm.tm_mday += ((pc.day_number - tm.tm_wday + 7) % 7 + 7 + * (pc.day_ordinal + - (0 < pc.day_ordinal + && tm.tm_wday != pc.day_number))); + tm.tm_isdst = -1; + Start = mktime (&tm); + if (Start == (time_t) -1) { + goto fail; + } + } + /* Add relative date. */ + if (pc.rel.year | pc.rel.month | pc.rel.day) { + int year = tm.tm_year + pc.rel.year; + int month = tm.tm_mon + pc.rel.month; + int day = tm.tm_mday + pc.rel.day; + if (((year < tm.tm_year) ^ (pc.rel.year < 0)) + | ((month < tm.tm_mon) ^ (pc.rel.month < 0)) + | ((day < tm.tm_mday) ^ (pc.rel.day < 0))) { + goto fail; + } + tm.tm_year = year; + tm.tm_mon = month; + tm.tm_mday = day; + tm.tm_hour = tm0.tm_hour; + tm.tm_min = tm0.tm_min; + tm.tm_sec = tm0.tm_sec; + tm.tm_isdst = tm0.tm_isdst; + Start = mktime (&tm); + if (Start == (time_t) -1) { + goto fail; + } + } + + /** + * The only "output" of this if-block is an updated Start value, + * so this block must follow others that clobber Start. + */ + if (pc.zones_seen) { + intmax_t delta = pc.time_zone * 60; + time_t t1; +#ifdef HAVE_TM_GMTOFF + delta -= tm.tm_gmtoff; +#else + time_t t = Start; + struct tm const *gmt = gmtime (&t); + if (! gmt) { + goto fail; + } + delta -= tm_diff (&tm, gmt); +#endif + t1 = Start - delta; + if ((Start < t1) != (delta < 0)) { + goto fail; /* time_t overflow */ + } + Start = t1; + } + + /** + * Add relative hours, minutes, and seconds. On hosts that + * support leap seconds, ignore the possibility of leap seconds; + * e.g., "+ 10 minutes" adds 600 seconds, even if one of them is + * a leap second. Typically this is not what the user wants, + * but it's too hard to do it the other way, because the time + * zone indicator must be applied before relative times, and if + * mktime is applied again the time zone will be lost. + */ + intmax_t sum_ns = pc.seconds.tv_nsec + pc.rel.ns; + intmax_t normalized_ns = (sum_ns % BILLION + BILLION) % BILLION; + time_t t0 = Start; + intmax_t d1 = 60 * 60 * pc.rel.hour; + time_t t1 = t0 + d1; + intmax_t d2 = 60 * pc.rel.minutes; + time_t t2 = t1 + d2; + time_t d3 = pc.rel.seconds; + time_t t3 = t2 + d3; + intmax_t d4 = (sum_ns - normalized_ns) / BILLION; + time_t t4 = t3 + d4; + time_t t5 = t4; + + if ((d1 / (60 * 60) ^ pc.rel.hour) + | (d2 / 60 ^ pc.rel.minutes) + | ((t1 < t0) ^ (d1 < 0)) + | ((t2 < t1) ^ (d2 < 0)) + | ((t3 < t2) ^ (d3 < 0)) + | ((t4 < t3) ^ (d4 < 0)) + | (t5 != t4)) { + goto fail; + } + result->tv_sec = t5; + result->tv_nsec = normalized_ns; + } + + goto done; + + fail: + ok = 0; + done: + if (tz_was_altered) + ok &= (tz0 ? setenv ("TZ", tz0, 1) + : unsetenv ("TZ")) == 0; + if (tz0 != tz0buf) + free (tz0); + return ok; +} |