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Diffstat (limited to 'lib/parse-datetime.c')
| -rw-r--r-- | lib/parse-datetime.c | 4145 |
1 files changed, 4145 insertions, 0 deletions
diff --git a/lib/parse-datetime.c b/lib/parse-datetime.c new file mode 100644 index 0000000..dde5f8a --- /dev/null +++ b/lib/parse-datetime.c @@ -0,0 +1,4145 @@ +/* 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 "parse-datetime.y" + +/* Parse a string into an internal timestamp. + + Copyright (C) 1999-2000, 2002-2020 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 <https://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 Assaf Gordon <assafgordon@gmail.com> in 2016 to add + debug output. + + Modified by Paul Eggert <eggert@twinsun.com> in 1999 to do the + right thing about local DST. Also modified by Paul Eggert + <eggert@cs.ucla.edu> in 2004 to support nanosecond-resolution + timestamps, in 2004 to support TZ strings in dates, and in 2017 to + check for integer overflow and to support longer-than-'long' + 'time_t' and 'tv_nsec'. */ + +#include <config.h> + +#include "parse-datetime.h" + +#include "intprops.h" +#include "timespec.h" +#include "verify.h" +#include "strftime.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 <c-ctype.h> +#include <limits.h> +#include <stdarg.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +#include "gettext.h" + +#define _(str) gettext (str) + +/* 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 + +/* The __attribute__ feature is available in gcc versions 2.5 and later. + The __-protected variants of the attributes 'format' and 'printf' are + accepted by gcc versions 2.6.4 (effectively 2.7) and later. + Enable _GL_ATTRIBUTE_FORMAT only if these are supported too, because + gnulib and libintl do '#define printf __printf__' when they override + the 'printf' function. */ +#if 2 < __GNUC__ + (7 <= __GNUC_MINOR__) +# define _GL_ATTRIBUTE_FORMAT(spec) __attribute__ ((__format__ spec)) +#else +# define _GL_ATTRIBUTE_FORMAT(spec) /* empty */ +#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 HOUR(x) (60 * 60 * (x)) + +#define STREQ(a, b) (strcmp (a, b) == 0) + +/* Verify that time_t is an integer as POSIX requires, and that every + time_t value fits in intmax_t. Please file a bug report if these + assumptions are false on your platform. */ +verify (TYPE_IS_INTEGER (time_t)); +verify (!TYPE_SIGNED (time_t) || INTMAX_MIN <= TYPE_MINIMUM (time_t)); +verify (TYPE_MAXIMUM (time_t) <= INTMAX_MAX); + +/* True if N is out of range for time_t. */ +static bool +time_overflow (intmax_t n) +{ + return ! ((TYPE_SIGNED (time_t) ? TYPE_MINIMUM (time_t) <= n : 0 <= n) + && n <= TYPE_MAXIMUM (time_t)); +} + +/* 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; } + +static void _GL_ATTRIBUTE_FORMAT ((__printf__, 1, 2)) +dbg_printf (char const *msg, ...) +{ + va_list args; + /* TODO: use gnulib's 'program_name' instead? */ + fputs ("date: ", stderr); + + va_start (args, msg); + vfprintf (stderr, msg, args); + va_end (args); +} + + +/* An integer value, and the number of digits in its textual + representation. */ +typedef struct +{ + bool negative; + intmax_t value; + ptrdiff_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 }; + +/* A reasonable upper bound for the buffer used in debug output. */ +enum { DBGBUFSIZE = 100 }; + +enum { BILLION = 1000000000, LOG10_BILLION = 9 }; + +/* Relative times. */ +typedef struct +{ + /* Relative year, month, day, hour, minutes, seconds, and nanoseconds. */ + intmax_t year; + intmax_t month; + intmax_t day; + intmax_t hour; + intmax_t minutes; + intmax_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 seconds east of UT. */ + int time_zone; + + /* Style used for time. */ + int meridian; + + /* Gregorian year, month, day, hour, minutes, seconds, and nanoseconds. */ + 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 nanoseconds. */ + relative_time rel; + + /* Presence or counts of nonterminals of various flavors parsed so far. */ + bool timespec_seen; + bool rels_seen; + ptrdiff_t dates_seen; + ptrdiff_t days_seen; + ptrdiff_t local_zones_seen; + ptrdiff_t dsts_seen; + ptrdiff_t times_seen; + ptrdiff_t zones_seen; + bool year_seen; + + /* Print debugging output to stderr. */ + bool parse_datetime_debug; + + /* Which of the 'seen' parts have been printed when debugging. */ + bool debug_dates_seen; + bool debug_days_seen; + bool debug_local_zones_seen; + bool debug_times_seen; + bool debug_zones_seen; + bool debug_year_seen; + + /* The user specified explicit ordinal day value. */ + bool debug_ordinal_day_seen; + + /* Table of local time zone abbreviations, terminated by a null entry. */ + 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 bool time_zone_hhmm (parser_control *, textint, intmax_t); + +/* 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_seen = true; + 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). Return true + if successful, false if an overflow occurred. */ +static bool +apply_relative_time (parser_control *pc, relative_time rel, int factor) +{ + if (factor < 0 + ? (INT_SUBTRACT_WRAPV (pc->rel.ns, rel.ns, &pc->rel.ns) + | INT_SUBTRACT_WRAPV (pc->rel.seconds, rel.seconds, &pc->rel.seconds) + | INT_SUBTRACT_WRAPV (pc->rel.minutes, rel.minutes, &pc->rel.minutes) + | INT_SUBTRACT_WRAPV (pc->rel.hour, rel.hour, &pc->rel.hour) + | INT_SUBTRACT_WRAPV (pc->rel.day, rel.day, &pc->rel.day) + | INT_SUBTRACT_WRAPV (pc->rel.month, rel.month, &pc->rel.month) + | INT_SUBTRACT_WRAPV (pc->rel.year, rel.year, &pc->rel.year)) + : (INT_ADD_WRAPV (pc->rel.ns, rel.ns, &pc->rel.ns) + | INT_ADD_WRAPV (pc->rel.seconds, rel.seconds, &pc->rel.seconds) + | INT_ADD_WRAPV (pc->rel.minutes, rel.minutes, &pc->rel.minutes) + | INT_ADD_WRAPV (pc->rel.hour, rel.hour, &pc->rel.hour) + | INT_ADD_WRAPV (pc->rel.day, rel.day, &pc->rel.day) + | INT_ADD_WRAPV (pc->rel.month, rel.month, &pc->rel.month) + | INT_ADD_WRAPV (pc->rel.year, rel.year, &pc->rel.year))) + return false; + pc->rels_seen = true; + return true; +} + +/* 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; +} + +/* Return a textual representation of the day ordinal/number values + in the parser_control struct (e.g., "last wed", "this tues", "thu"). */ +static const char * +str_days (parser_control *pc, char *buffer, int n) +{ + /* TODO: use relative_time_table for reverse lookup. */ + static char const ordinal_values[][11] = { + "last", + "this", + "next/first", + "(SECOND)", /* SECOND is commented out in relative_time_table. */ + "third", + "fourth", + "fifth", + "sixth", + "seventh", + "eight", + "ninth", + "tenth", + "eleventh", + "twelfth" + }; + + static char const days_values[][4] = { + "Sun", + "Mon", + "Tue", + "Wed", + "Thu", + "Fri", + "Sat" + }; + + int len; + + /* Don't add an ordinal prefix if the user didn't specify it + (e.g., "this wed" vs "wed"). */ + if (pc->debug_ordinal_day_seen) + { + /* Use word description if possible (e.g., -1 = last, 3 = third). */ + len = (-1 <= pc->day_ordinal && pc->day_ordinal <= 12 + ? snprintf (buffer, n, "%s", ordinal_values[pc->day_ordinal + 1]) + : snprintf (buffer, n, "%"PRIdMAX, pc->day_ordinal)); + } + else + { + buffer[0] = '\0'; + len = 0; + } + + /* Add the day name */ + if (0 <= pc->day_number && pc->day_number <= 6 && 0 <= len && len < n) + snprintf (buffer + len, n - len, &" %s"[len == 0], + days_values[pc->day_number]); + else + { + /* invalid day_number value - should never happen */ + } + return buffer; +} + +/* Convert a time zone to its string representation. */ + +enum { TIME_ZONE_BUFSIZE = INT_STRLEN_BOUND (intmax_t) + sizeof ":MM:SS" } ; + +static char const * +time_zone_str (int time_zone, char time_zone_buf[TIME_ZONE_BUFSIZE]) +{ + char *p = time_zone_buf; + char sign = time_zone < 0 ? '-' : '+'; + int hour = abs (time_zone / (60 * 60)); + p += sprintf (time_zone_buf, "%c%02d", sign, hour); + int offset_from_hour = abs (time_zone % (60 * 60)); + if (offset_from_hour != 0) + { + int mm = offset_from_hour / 60; + int ss = offset_from_hour % 60; + *p++ = ':'; + *p++ = '0' + mm / 10; + *p++ = '0' + mm % 10; + if (ss) + { + *p++ = ':'; + *p++ = '0' + ss / 10; + *p++ = '0' + ss % 10; + } + *p = '\0'; + } + return time_zone_buf; +} + +/* debugging: print the current time in the parser_control structure. + The parser will increment "*_seen" members for those which were parsed. + This function will print only newly seen parts. */ +static void +debug_print_current_time (char const *item, parser_control *pc) +{ + bool space = false; + + if (!pc->parse_datetime_debug) + return; + + /* no newline, more items printed below */ + dbg_printf (_("parsed %s part: "), item); + + if (pc->dates_seen && !pc->debug_dates_seen) + { + /*TODO: use pc->year.negative? */ + fprintf (stderr, "(Y-M-D) %04"PRIdMAX"-%02"PRIdMAX"-%02"PRIdMAX, + pc->year.value, pc->month, pc->day); + pc->debug_dates_seen = true; + space = true; + } + + if (pc->year_seen != pc->debug_year_seen) + { + if (space) + fputc (' ', stderr); + fprintf (stderr, _("year: %04"PRIdMAX), pc->year.value); + + pc->debug_year_seen = pc->year_seen; + space = true; + } + + if (pc->times_seen && !pc->debug_times_seen) + { + intmax_t sec = pc->seconds.tv_sec; + fprintf (stderr, &" %02"PRIdMAX":%02"PRIdMAX":%02"PRIdMAX[!space], + pc->hour, pc->minutes, sec); + if (pc->seconds.tv_nsec != 0) + { + int nsec = pc->seconds.tv_nsec; + fprintf (stderr, ".%09d", nsec); + } + if (pc->meridian == MERpm) + fputs ("pm", stderr); + + pc->debug_times_seen = true; + space = true; + } + + if (pc->days_seen && !pc->debug_days_seen) + { + if (space) + fputc (' ', stderr); + char tmp[DBGBUFSIZE]; + fprintf (stderr, _("%s (day ordinal=%"PRIdMAX" number=%d)"), + str_days (pc, tmp, sizeof tmp), + pc->day_ordinal, pc->day_number); + pc->debug_days_seen = true; + space = true; + } + + /* local zone strings only change the DST settings, + not the timezone value. If seen, inform about the DST. */ + if (pc->local_zones_seen && !pc->debug_local_zones_seen) + { + fprintf (stderr, &" isdst=%d%s"[!space], + pc->local_isdst, pc->dsts_seen ? " DST" : ""); + pc->debug_local_zones_seen = true; + space = true; + } + + if (pc->zones_seen && !pc->debug_zones_seen) + { + char time_zone_buf[TIME_ZONE_BUFSIZE]; + fprintf (stderr, &" UTC%s"[!space], + time_zone_str (pc->time_zone, time_zone_buf)); + pc->debug_zones_seen = true; + space = true; + } + + if (pc->timespec_seen) + { + intmax_t sec = pc->seconds.tv_sec; + if (space) + fputc (' ', stderr); + fprintf (stderr, _("number of seconds: %"PRIdMAX), sec); + } + + fputc ('\n', stderr); +} + +/* Debugging: print the current relative values. */ + +static bool +print_rel_part (bool space, intmax_t val, char const *name) +{ + if (val == 0) + return space; + fprintf (stderr, &" %+"PRIdMAX" %s"[!space], val, name); + return true; +} + +static void +debug_print_relative_time (char const *item, parser_control const *pc) +{ + bool space = false; + + if (!pc->parse_datetime_debug) + return; + + /* no newline, more items printed below */ + dbg_printf (_("parsed %s part: "), item); + + if (pc->rel.year == 0 && pc->rel.month == 0 && pc->rel.day == 0 + && pc->rel.hour == 0 && pc->rel.minutes == 0 && pc->rel.seconds == 0 + && pc->rel.ns == 0) + { + /* Special case: relative time of this/today/now */ + fputs (_("today/this/now\n"), stderr); + return; + } + + space = print_rel_part (space, pc->rel.year, "year(s)"); + space = print_rel_part (space, pc->rel.month, "month(s)"); + space = print_rel_part (space, pc->rel.day, "day(s)"); + space = print_rel_part (space, pc->rel.hour, "hour(s)"); + space = print_rel_part (space, pc->rel.minutes, "minutes"); + space = print_rel_part (space, pc->rel.seconds, "seconds"); + print_rel_part (space, pc->rel.ns, "nanoseconds"); + + fputc ('\n', stderr); +} + + + + +#line 635 "parse-datetime.tab.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 + +/* Use api.header.include to #include this header + instead of duplicating it here. */ +#ifndef YY_YY_PARSE_DATETIME_TAB_H_INCLUDED +# define YY_YY_PARSE_DATETIME_TAB_H_INCLUDED +/* 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 + +/* Value type. */ +#if ! defined YYSTYPE && ! defined YYSTYPE_IS_DECLARED +union YYSTYPE +{ +#line 576 "parse-datetime.y" + + intmax_t intval; + textint textintval; + struct timespec timespec; + relative_time rel; + +#line 708 "parse-datetime.tab.c" + +}; +typedef union YYSTYPE YYSTYPE; +# define YYSTYPE_IS_TRIVIAL 1 +# define YYSTYPE_IS_DECLARED 1 +#endif + + + +int yyparse (parser_control *pc); + +#endif /* !YY_YY_PARSE_DATETIME_TAB_H_INCLUDED */ + + + +#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, 603, 603, 604, 608, 616, 618, 622, 627, 632, + 637, 642, 647, 652, 656, 660, 667, 671, 675, 680, + 685, 690, 694, 699, 704, 711, 713, 717, 742, 744, + 754, 756, 758, 763, 768, 771, 773, 778, 783, 788, + 794, 803, 808, 841, 849, 857, 862, 868, 873, 879, + 883, 893, 895, 897, 902, 904, 906, 908, 910, 912, + 914, 917, 920, 922, 924, 926, 928, 930, 932, 934, + 936, 938, 940, 942, 944, 948, 950, 952, 955, 957, + 959, 964, 968, 968, 971, 972, 978, 979, 985, 990, + 1001, 1002 +}; +#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 609 "parse-datetime.y" + { + pc->seconds = (yyvsp[0].timespec); + pc->timespec_seen = true; + debug_print_current_time (_("number of seconds"), pc); + } +#line 1896 "parse-datetime.tab.c" + break; + + case 7: +#line 623 "parse-datetime.y" + { + pc->times_seen++; pc->dates_seen++; + debug_print_current_time (_("datetime"), pc); + } +#line 1905 "parse-datetime.tab.c" + break; + + case 8: +#line 628 "parse-datetime.y" + { + pc->times_seen++; + debug_print_current_time (_("time"), pc); + } +#line 1914 "parse-datetime.tab.c" + break; + + case 9: +#line 633 "parse-datetime.y" + { + pc->local_zones_seen++; + debug_print_current_time (_("local_zone"), pc); + } +#line 1923 "parse-datetime.tab.c" + break; + + case 10: +#line 638 "parse-datetime.y" + { + pc->zones_seen++; + debug_print_current_time (_("zone"), pc); + } +#line 1932 "parse-datetime.tab.c" + break; + + case 11: +#line 643 "parse-datetime.y" + { + pc->dates_seen++; + debug_print_current_time (_("date"), pc); + } +#line 1941 "parse-datetime.tab.c" + break; + + case 12: +#line 648 "parse-datetime.y" + { + pc->days_seen++; + debug_print_current_time (_("day"), pc); + } +#line 1950 "parse-datetime.tab.c" + break; + + case 13: +#line 653 "parse-datetime.y" + { + debug_print_relative_time (_("relative"), pc); + } +#line 1958 "parse-datetime.tab.c" + break; + + case 14: +#line 657 "parse-datetime.y" + { + debug_print_current_time (_("number"), pc); + } +#line 1966 "parse-datetime.tab.c" + break; + + case 15: +#line 661 "parse-datetime.y" + { + debug_print_relative_time (_("hybrid"), pc); + } +#line 1974 "parse-datetime.tab.c" + break; + + case 18: +#line 676 "parse-datetime.y" + { + set_hhmmss (pc, (yyvsp[-1].textintval).value, 0, 0, 0); + pc->meridian = (yyvsp[0].intval); + } +#line 1983 "parse-datetime.tab.c" + break; + + case 19: +#line 681 "parse-datetime.y" + { + set_hhmmss (pc, (yyvsp[-3].textintval).value, (yyvsp[-1].textintval).value, 0, 0); + pc->meridian = (yyvsp[0].intval); + } +#line 1992 "parse-datetime.tab.c" + break; + + case 20: +#line 686 "parse-datetime.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 2001 "parse-datetime.tab.c" + break; + + case 22: +#line 695 "parse-datetime.y" + { + set_hhmmss (pc, (yyvsp[-1].textintval).value, 0, 0, 0); + pc->meridian = MER24; + } +#line 2010 "parse-datetime.tab.c" + break; + + case 23: +#line 700 "parse-datetime.y" + { + set_hhmmss (pc, (yyvsp[-3].textintval).value, (yyvsp[-1].textintval).value, 0, 0); + pc->meridian = MER24; + } +#line 2019 "parse-datetime.tab.c" + break; + + case 24: +#line 705 "parse-datetime.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 2028 "parse-datetime.tab.c" + break; + + case 27: +#line 718 "parse-datetime.y" + { + pc->zones_seen++; + if (! time_zone_hhmm (pc, (yyvsp[-1].textintval), (yyvsp[0].intval))) YYABORT; + } +#line 2037 "parse-datetime.tab.c" + break; + + case 28: +#line 743 "parse-datetime.y" + { pc->local_isdst = (yyvsp[0].intval); } +#line 2043 "parse-datetime.tab.c" + break; + + case 29: +#line 745 "parse-datetime.y" + { + pc->local_isdst = 1; + pc->dsts_seen++; + } +#line 2052 "parse-datetime.tab.c" + break; + + case 30: +#line 755 "parse-datetime.y" + { pc->time_zone = (yyvsp[0].intval); } +#line 2058 "parse-datetime.tab.c" + break; + + case 31: +#line 757 "parse-datetime.y" + { pc->time_zone = -HOUR (7); } +#line 2064 "parse-datetime.tab.c" + break; + + case 32: +#line 759 "parse-datetime.y" + { pc->time_zone = (yyvsp[-1].intval); + if (! apply_relative_time (pc, (yyvsp[0].rel), 1)) YYABORT; + debug_print_relative_time (_("relative"), pc); + } +#line 2073 "parse-datetime.tab.c" + break; + + case 33: +#line 764 "parse-datetime.y" + { pc->time_zone = -HOUR (7); + if (! apply_relative_time (pc, (yyvsp[0].rel), 1)) YYABORT; + debug_print_relative_time (_("relative"), pc); + } +#line 2082 "parse-datetime.tab.c" + break; + + case 34: +#line 769 "parse-datetime.y" + { if (! time_zone_hhmm (pc, (yyvsp[-1].textintval), (yyvsp[0].intval))) YYABORT; + if (INT_ADD_WRAPV (pc->time_zone, (yyvsp[-2].intval), &pc->time_zone)) YYABORT; } +#line 2089 "parse-datetime.tab.c" + break; + + case 35: +#line 772 "parse-datetime.y" + { pc->time_zone = (yyvsp[0].intval) + 60 * 60; } +#line 2095 "parse-datetime.tab.c" + break; + + case 36: +#line 774 "parse-datetime.y" + { pc->time_zone = (yyvsp[-1].intval) + 60 * 60; } +#line 2101 "parse-datetime.tab.c" + break; + + case 37: +#line 779 "parse-datetime.y" + { + pc->day_ordinal = 0; + pc->day_number = (yyvsp[0].intval); + } +#line 2110 "parse-datetime.tab.c" + break; + + case 38: +#line 784 "parse-datetime.y" + { + pc->day_ordinal = 0; + pc->day_number = (yyvsp[-1].intval); + } +#line 2119 "parse-datetime.tab.c" + break; + + case 39: +#line 789 "parse-datetime.y" + { + pc->day_ordinal = (yyvsp[-1].intval); + pc->day_number = (yyvsp[0].intval); + pc->debug_ordinal_day_seen = true; + } +#line 2129 "parse-datetime.tab.c" + break; + + case 40: +#line 795 "parse-datetime.y" + { + pc->day_ordinal = (yyvsp[-1].textintval).value; + pc->day_number = (yyvsp[0].intval); + pc->debug_ordinal_day_seen = true; + } +#line 2139 "parse-datetime.tab.c" + break; + + case 41: +#line 804 "parse-datetime.y" + { + pc->month = (yyvsp[-2].textintval).value; + pc->day = (yyvsp[0].textintval).value; + } +#line 2148 "parse-datetime.tab.c" + break; + + case 42: +#line 809 "parse-datetime.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) + { + if (pc->parse_datetime_debug) + { + intmax_t digits = (yyvsp[-4].textintval).digits; + dbg_printf (_("warning: value %"PRIdMAX" has %"PRIdMAX" digits. " + "Assuming YYYY/MM/DD\n"), + (yyvsp[-4].textintval).value, digits); + } + + pc->year = (yyvsp[-4].textintval); + pc->month = (yyvsp[-2].textintval).value; + pc->day = (yyvsp[0].textintval).value; + } + else + { + if (pc->parse_datetime_debug) + dbg_printf (_("warning: value %"PRIdMAX" has less than 4 digits. " + "Assuming MM/DD/YY[YY]\n"), + (yyvsp[-4].textintval).value); + + pc->month = (yyvsp[-4].textintval).value; + pc->day = (yyvsp[-2].textintval).value; + pc->year = (yyvsp[0].textintval); + } + } +#line 2185 "parse-datetime.tab.c" + break; + + case 43: +#line 842 "parse-datetime.y" + { + /* E.g., 17-JUN-1992. */ + pc->day = (yyvsp[-2].textintval).value; + pc->month = (yyvsp[-1].intval); + if (INT_SUBTRACT_WRAPV (0, (yyvsp[0].textintval).value, &pc->year.value)) YYABORT; + pc->year.digits = (yyvsp[0].textintval).digits; + } +#line 2197 "parse-datetime.tab.c" + break; + + case 44: +#line 850 "parse-datetime.y" + { + /* E.g., JUN-17-1992. */ + pc->month = (yyvsp[-2].intval); + if (INT_SUBTRACT_WRAPV (0, (yyvsp[-1].textintval).value, &pc->day)) YYABORT; + if (INT_SUBTRACT_WRAPV (0, (yyvsp[0].textintval).value, &pc->year.value)) YYABORT; + pc->year.digits = (yyvsp[0].textintval).digits; + } +#line 2209 "parse-datetime.tab.c" + break; + + case 45: +#line 858 "parse-datetime.y" + { + pc->month = (yyvsp[-1].intval); + pc->day = (yyvsp[0].textintval).value; + } +#line 2218 "parse-datetime.tab.c" + break; + + case 46: +#line 863 "parse-datetime.y" + { + pc->month = (yyvsp[-3].intval); + pc->day = (yyvsp[-2].textintval).value; + pc->year = (yyvsp[0].textintval); + } +#line 2228 "parse-datetime.tab.c" + break; + + case 47: +#line 869 "parse-datetime.y" + { + pc->day = (yyvsp[-1].textintval).value; + pc->month = (yyvsp[0].intval); + } +#line 2237 "parse-datetime.tab.c" + break; + + case 48: +#line 874 "parse-datetime.y" + { + pc->day = (yyvsp[-2].textintval).value; + pc->month = (yyvsp[-1].intval); + pc->year = (yyvsp[0].textintval); + } +#line 2247 "parse-datetime.tab.c" + break; + + case 50: +#line 884 "parse-datetime.y" + { + /* ISO 8601 format. YYYY-MM-DD. */ + pc->year = (yyvsp[-2].textintval); + if (INT_SUBTRACT_WRAPV (0, (yyvsp[-1].textintval).value, &pc->month)) YYABORT; + if (INT_SUBTRACT_WRAPV (0, (yyvsp[0].textintval).value, &pc->day)) YYABORT; + } +#line 2258 "parse-datetime.tab.c" + break; + + case 51: +#line 894 "parse-datetime.y" + { if (! apply_relative_time (pc, (yyvsp[-1].rel), (yyvsp[0].intval))) YYABORT; } +#line 2264 "parse-datetime.tab.c" + break; + + case 52: +#line 896 "parse-datetime.y" + { if (! apply_relative_time (pc, (yyvsp[0].rel), 1)) YYABORT; } +#line 2270 "parse-datetime.tab.c" + break; + + case 53: +#line 898 "parse-datetime.y" + { if (! apply_relative_time (pc, (yyvsp[0].rel), 1)) YYABORT; } +#line 2276 "parse-datetime.tab.c" + break; + + case 54: +#line 903 "parse-datetime.y" + { (yyval.rel) = RELATIVE_TIME_0; (yyval.rel).year = (yyvsp[-1].intval); } +#line 2282 "parse-datetime.tab.c" + break; + + case 55: +#line 905 "parse-datetime.y" + { (yyval.rel) = RELATIVE_TIME_0; (yyval.rel).year = (yyvsp[-1].textintval).value; } +#line 2288 "parse-datetime.tab.c" + break; + + case 56: +#line 907 "parse-datetime.y" + { (yyval.rel) = RELATIVE_TIME_0; (yyval.rel).year = 1; } +#line 2294 "parse-datetime.tab.c" + break; + + case 57: +#line 909 "parse-datetime.y" + { (yyval.rel) = RELATIVE_TIME_0; (yyval.rel).month = (yyvsp[-1].intval); } +#line 2300 "parse-datetime.tab.c" + break; + + case 58: +#line 911 "parse-datetime.y" + { (yyval.rel) = RELATIVE_TIME_0; (yyval.rel).month = (yyvsp[-1].textintval).value; } +#line 2306 "parse-datetime.tab.c" + break; + + case 59: +#line 913 "parse-datetime.y" + { (yyval.rel) = RELATIVE_TIME_0; (yyval.rel).month = 1; } +#line 2312 "parse-datetime.tab.c" + break; + + case 60: +#line 915 "parse-datetime.y" + { (yyval.rel) = RELATIVE_TIME_0; + if (INT_MULTIPLY_WRAPV ((yyvsp[-1].intval), (yyvsp[0].intval), &(yyval.rel).day)) YYABORT; } +#line 2319 "parse-datetime.tab.c" + break; + + case 61: +#line 918 "parse-datetime.y" + { (yyval.rel) = RELATIVE_TIME_0; + if (INT_MULTIPLY_WRAPV ((yyvsp[-1].textintval).value, (yyvsp[0].intval), &(yyval.rel).day)) YYABORT; } +#line 2326 "parse-datetime.tab.c" + break; + + case 62: +#line 921 "parse-datetime.y" + { (yyval.rel) = RELATIVE_TIME_0; (yyval.rel).day = (yyvsp[0].intval); } +#line 2332 "parse-datetime.tab.c" + break; + + case 63: +#line 923 "parse-datetime.y" + { (yyval.rel) = RELATIVE_TIME_0; (yyval.rel).hour = (yyvsp[-1].intval); } +#line 2338 "parse-datetime.tab.c" + break; + + case 64: +#line 925 "parse-datetime.y" + { (yyval.rel) = RELATIVE_TIME_0; (yyval.rel).hour = (yyvsp[-1].textintval).value; } +#line 2344 "parse-datetime.tab.c" + break; + + case 65: +#line 927 "parse-datetime.y" + { (yyval.rel) = RELATIVE_TIME_0; (yyval.rel).hour = 1; } +#line 2350 "parse-datetime.tab.c" + break; + + case 66: +#line 929 "parse-datetime.y" + { (yyval.rel) = RELATIVE_TIME_0; (yyval.rel).minutes = (yyvsp[-1].intval); } +#line 2356 "parse-datetime.tab.c" + break; + + case 67: +#line 931 "parse-datetime.y" + { (yyval.rel) = RELATIVE_TIME_0; (yyval.rel).minutes = (yyvsp[-1].textintval).value; } +#line 2362 "parse-datetime.tab.c" + break; + + case 68: +#line 933 "parse-datetime.y" + { (yyval.rel) = RELATIVE_TIME_0; (yyval.rel).minutes = 1; } +#line 2368 "parse-datetime.tab.c" + break; + + case 69: +#line 935 "parse-datetime.y" + { (yyval.rel) = RELATIVE_TIME_0; (yyval.rel).seconds = (yyvsp[-1].intval); } +#line 2374 "parse-datetime.tab.c" + break; + + case 70: +#line 937 "parse-datetime.y" + { (yyval.rel) = RELATIVE_TIME_0; (yyval.rel).seconds = (yyvsp[-1].textintval).value; } +#line 2380 "parse-datetime.tab.c" + break; + + case 71: +#line 939 "parse-datetime.y" + { (yyval.rel) = RELATIVE_TIME_0; (yyval.rel).seconds = (yyvsp[-1].timespec).tv_sec; (yyval.rel).ns = (yyvsp[-1].timespec).tv_nsec; } +#line 2386 "parse-datetime.tab.c" + break; + + case 72: +#line 941 "parse-datetime.y" + { (yyval.rel) = RELATIVE_TIME_0; (yyval.rel).seconds = (yyvsp[-1].timespec).tv_sec; (yyval.rel).ns = (yyvsp[-1].timespec).tv_nsec; } +#line 2392 "parse-datetime.tab.c" + break; + + case 73: +#line 943 "parse-datetime.y" + { (yyval.rel) = RELATIVE_TIME_0; (yyval.rel).seconds = 1; } +#line 2398 "parse-datetime.tab.c" + break; + + case 75: +#line 949 "parse-datetime.y" + { (yyval.rel) = RELATIVE_TIME_0; (yyval.rel).year = (yyvsp[-1].textintval).value; } +#line 2404 "parse-datetime.tab.c" + break; + + case 76: +#line 951 "parse-datetime.y" + { (yyval.rel) = RELATIVE_TIME_0; (yyval.rel).month = (yyvsp[-1].textintval).value; } +#line 2410 "parse-datetime.tab.c" + break; + + case 77: +#line 953 "parse-datetime.y" + { (yyval.rel) = RELATIVE_TIME_0; + if (INT_MULTIPLY_WRAPV ((yyvsp[-1].textintval).value, (yyvsp[0].intval), &(yyval.rel).day)) YYABORT; } +#line 2417 "parse-datetime.tab.c" + break; + + case 78: +#line 956 "parse-datetime.y" + { (yyval.rel) = RELATIVE_TIME_0; (yyval.rel).hour = (yyvsp[-1].textintval).value; } +#line 2423 "parse-datetime.tab.c" + break; + + case 79: +#line 958 "parse-datetime.y" + { (yyval.rel) = RELATIVE_TIME_0; (yyval.rel).minutes = (yyvsp[-1].textintval).value; } +#line 2429 "parse-datetime.tab.c" + break; + + case 80: +#line 960 "parse-datetime.y" + { (yyval.rel) = RELATIVE_TIME_0; (yyval.rel).seconds = (yyvsp[-1].textintval).value; } +#line 2435 "parse-datetime.tab.c" + break; + + case 81: +#line 965 "parse-datetime.y" + { (yyval.rel) = RELATIVE_TIME_0; (yyval.rel).day = (yyvsp[0].intval); } +#line 2441 "parse-datetime.tab.c" + break; + + case 85: +#line 973 "parse-datetime.y" + { if (time_overflow ((yyvsp[0].textintval).value)) YYABORT; + (yyval.timespec).tv_sec = (yyvsp[0].textintval).value; (yyval.timespec).tv_nsec = 0; } +#line 2448 "parse-datetime.tab.c" + break; + + case 87: +#line 980 "parse-datetime.y" + { if (time_overflow ((yyvsp[0].textintval).value)) YYABORT; + (yyval.timespec).tv_sec = (yyvsp[0].textintval).value; (yyval.timespec).tv_nsec = 0; } +#line 2455 "parse-datetime.tab.c" + break; + + case 88: +#line 986 "parse-datetime.y" + { digits_to_date_time (pc, (yyvsp[0].textintval)); } +#line 2461 "parse-datetime.tab.c" + break; + + case 89: +#line 991 "parse-datetime.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)); + if (! apply_relative_time (pc, (yyvsp[0].rel), 1)) YYABORT; + } +#line 2472 "parse-datetime.tab.c" + break; + + case 90: +#line 1001 "parse-datetime.y" + { (yyval.intval) = -1; } +#line 2478 "parse-datetime.tab.c" + break; + + case 91: +#line 1003 "parse-datetime.y" + { (yyval.intval) = (yyvsp[0].textintval).value; } +#line 2484 "parse-datetime.tab.c" + break; + + +#line 2488 "parse-datetime.tab.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 1006 "parse-datetime.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 + oin 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_datetime 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 * 60) }, /* Newfoundland Standard */ + { "NDT", tDAYZONE,-(HOUR ( 3) + 30 * 60) }, /* 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 * 60) }, /* 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. + + RFC 822 got these backwards, but RFC 5322 makes the incorrect + treatment optional, so do them the right way here. + + 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 zone expressed as HH:MM into an integer count of + seconds. If MM is negative, then S is of the form HHMM and needs + to be picked apart; otherwise, S is of the form HH. As specified in + https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap08.html#tag_08_03, allow + only valid TZ range, and consider first two digits as hours, if no + minutes specified. Return true if successful. */ + +static bool +time_zone_hhmm (parser_control *pc, textint s, intmax_t mm) +{ + intmax_t n_minutes; + bool overflow = false; + + /* If the length of S is 1 or 2 and no minutes are specified, + interpret it as a number of hours. */ + if (s.digits <= 2 && mm < 0) + s.value *= 100; + + if (mm < 0) + n_minutes = (s.value / 100) * 60 + s.value % 100; + else + { + overflow |= INT_MULTIPLY_WRAPV (s.value, 60, &n_minutes); + overflow |= (s.negative + ? INT_SUBTRACT_WRAPV (n_minutes, mm, &n_minutes) + : INT_ADD_WRAPV (n_minutes, mm, &n_minutes)); + } + + if (overflow || ! (-24 * 60 <= n_minutes && n_minutes <= 24 * 60)) + return false; + pc->time_zone = n_minutes * 60; + return true; +} + +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; + } +} + +enum { TM_YEAR_BASE = 1900 }; +enum { TM_YEAR_BUFSIZE = INT_BUFSIZE_BOUND (int) + 1 }; + +/* Convert TM_YEAR, a year minus 1900, to a string that is numerically + correct even if subtracting 1900 would overflow. */ + +static char const * +tm_year_str (int tm_year, char buf[TM_YEAR_BUFSIZE]) +{ + verify (TM_YEAR_BASE % 100 == 0); + sprintf (buf, &"-%02d%02d"[-TM_YEAR_BASE <= tm_year], + abs (tm_year / 100 + TM_YEAR_BASE / 100), + abs (tm_year % 100)); + return buf; +} + +/* Convert a text year number to a year minus 1900, working correctly + even if the input is in the range INT_MAX .. INT_MAX + 1900 - 1. */ + +static bool +to_tm_year (textint textyear, bool debug, int *tm_year) +{ + intmax_t year = textyear.value; + + /* XPG4 suggests that years 00-68 map to 2000-2068, and + years 69-99 map to 1969-1999. */ + if (0 <= year && textyear.digits == 2) + { + year += year < 69 ? 2000 : 1900; + if (debug) + dbg_printf (_("warning: adjusting year value %"PRIdMAX + " to %"PRIdMAX"\n"), + textyear.value, year); + } + + if (year < 0 + ? INT_SUBTRACT_WRAPV (-TM_YEAR_BASE, year, tm_year) + : INT_SUBTRACT_WRAPV (year, TM_YEAR_BASE, tm_year)) + { + if (debug) + dbg_printf (_("error: out-of-range year %"PRIdMAX"\n"), year); + return false; + } + + return true; +} + +static table const * _GL_ATTRIBUTE_PURE +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 strftime.c. */ +static int +tm_diff (const struct tm *a, const struct tm *b) +{ + /* Compute intervening leap days correctly even if year is negative. + Take care to avoid int overflow in leap day calculations, + but it's OK to assume that A and B are close to each other. */ + 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; + ptrdiff_t wordlen; + table const *tp; + bool period_found; + bool 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 = false, p = q = word; (*p = *q); q++) + if (*q == '.') + period_found = true; + 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; + + for (;;) + { + while (c = *pc->input, c_isspace (c)) + pc->input++; + + if (c_isdigit (c) || c == '-' || c == '+') + { + char const *p; + int sign; + intmax_t value = 0; + 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; + + do + { + if (INT_MULTIPLY_WRAPV (value, 10, &value)) + return '?'; + if (INT_ADD_WRAPV (value, sign < 0 ? '0' - c : c - '0', &value)) + return '?'; + c = *++p; + } + while (c_isdigit (c)); + + if ((c == '.' || c == ',') && c_isdigit (p[1])) + { + time_t s; + int ns; + int digits; + + if (time_overflow (value)) + return '?'; + s = value; + + /* 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) + { + if (s == TYPE_MINIMUM (time_t)) + return '?'; + s--; + 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; + lvalp->textintval.value = value; + 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) + { + if (pc->parse_datetime_debug) + dbg_printf (_("error: unknown word '%s'\n"), buff); + return '?'; + } + lvalp->intval = tp->value; + return tp->type; + } + + if (c != '(') + return to_uchar (*pc->input++); + + ptrdiff_t 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 _GL_UNUSED, + char const *s _GL_UNUSED) +{ + return 0; +} + +/* If *TM0 is the old and *TM1 is the new value of a struct tm after + passing it to mktime_z, return true if it's OK. It's not OK if + mktime failed or if *TM0 has out-of-range mainline members. + The caller should set TM1->tm_wday to -1 before calling mktime, + as a negative tm_wday is how mktime failure is inferred. */ + +static bool +mktime_ok (struct tm const *tm0, struct tm const *tm1) +{ + if (tm1->tm_wday < 0) + return false; + + 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)); +} + +/* Debugging: format a 'struct tm' into a buffer, taking the parser's + timezone information into account (if pc != NULL). */ +static char const * +debug_strfdatetime (struct tm const *tm, parser_control const *pc, + char *buf, int n) +{ + /* TODO: + 1. find an optimal way to print date string in a clear and unambiguous + format. Currently, always add '(Y-M-D)' prefix. + Consider '2016y01m10d' or 'year(2016) month(01) day(10)'. + + If the user needs debug printing, it means he/she already having + issues with the parsing - better to avoid formats that could + be mis-interpreted (e.g., just YYYY-MM-DD). + + 2. Can strftime be used instead? + depends if it is portable and can print invalid dates on all systems. + + 3. Print timezone information ? + + 4. Print DST information ? + + 5. Print nanosecond information ? + + NOTE: + Printed date/time values might not be valid, e.g., '2016-02-31' + or '2016-19-2016' . These are the values as parsed from the user + string, before validation. + */ + int m = nstrftime (buf, n, "(Y-M-D) %Y-%m-%d %H:%M:%S", tm, 0, 0); + + /* If parser_control information was provided (for timezone), + and there's enough space in the buffer, add timezone info. */ + if (pc && m < n && pc->zones_seen) + { + int tz = pc->time_zone; + + /* Account for DST if tLOCAL_ZONE was seen. */ + if (pc->local_zones_seen && !pc->zones_seen && 0 < pc->local_isdst) + tz += 60 * 60; + + char time_zone_buf[TIME_ZONE_BUFSIZE]; + snprintf (&buf[m], n - m, " TZ=%s", time_zone_str (tz, time_zone_buf)); + } + return buf; +} + +static char const * +debug_strfdate (struct tm const *tm, char *buf, int n) +{ + char tm_year_buf[TM_YEAR_BUFSIZE]; + snprintf (buf, n, "(Y-M-D) %s-%02d-%02d", + tm_year_str (tm->tm_year, tm_year_buf), + tm->tm_mon + 1, tm->tm_mday); + return buf; +} + +static char const * +debug_strftime (struct tm const *tm, char *buf, int n) +{ + snprintf (buf, n, "%02d:%02d:%02d", tm->tm_hour, tm->tm_min, tm->tm_sec); + return buf; +} + +/* If mktime_ok failed, display the failed time values, + and provide possible hints. Example output: + + date: error: invalid date/time value: + date: user provided time: '(Y-M-D) 2006-04-02 02:45:00' + date: normalized time: '(Y-M-D) 2006-04-02 03:45:00' + date: __ + date: possible reasons: + date: non-existing due to daylight-saving time; + date: numeric values overflow; + date: missing timezone; + */ +static void +debug_mktime_not_ok (struct tm const *tm0, struct tm const *tm1, + parser_control const *pc, bool time_zone_seen) +{ + /* TODO: handle t == -1 (as in 'mktime_ok'). */ + char tmp[DBGBUFSIZE]; + int i; + const bool eq_sec = (tm0->tm_sec == tm1->tm_sec); + const bool eq_min = (tm0->tm_min == tm1->tm_min); + const bool eq_hour = (tm0->tm_hour == tm1->tm_hour); + const bool eq_mday = (tm0->tm_mday == tm1->tm_mday); + const bool eq_month = (tm0->tm_mon == tm1->tm_mon); + const bool eq_year = (tm0->tm_year == tm1->tm_year); + + const bool dst_shift = eq_sec && eq_min && !eq_hour + && eq_mday && eq_month && eq_year; + + if (!pc->parse_datetime_debug) + return; + + dbg_printf (_("error: invalid date/time value:\n")); + dbg_printf (_(" user provided time: '%s'\n"), + debug_strfdatetime (tm0, pc, tmp, sizeof tmp)); + dbg_printf (_(" normalized time: '%s'\n"), + debug_strfdatetime (tm1, pc, tmp, sizeof tmp)); + /* The format must be aligned with debug_strfdatetime and the two + DEBUG statements above. This string is not translated. */ + i = snprintf (tmp, sizeof tmp, + " %4s %2s %2s %2s %2s %2s", + eq_year ? "" : "----", + eq_month ? "" : "--", + eq_mday ? "" : "--", + eq_hour ? "" : "--", + eq_min ? "" : "--", + eq_sec ? "" : "--"); + /* Trim trailing whitespace. */ + if (0 <= i) + { + if (sizeof tmp - 1 < i) + i = sizeof tmp - 1; + while (0 < i && tmp[i - 1] == ' ') + --i; + tmp[i] = '\0'; + } + dbg_printf ("%s\n", tmp); + + dbg_printf (_(" possible reasons:\n")); + if (dst_shift) + dbg_printf (_(" non-existing due to daylight-saving time;\n")); + if (!eq_mday && !eq_month) + dbg_printf (_(" invalid day/month combination;\n")); + dbg_printf (_(" numeric values overflow;\n")); + dbg_printf (" %s\n", (time_zone_seen ? _("incorrect timezone") + : _("missing timezone"))); +} + +/* The original interface: run with debug=false and the default timezone. */ +bool +parse_datetime (struct timespec *result, char const *p, + struct timespec const *now) +{ + char const *tzstring = getenv ("TZ"); + timezone_t tz = tzalloc (tzstring); + if (!tz) + return false; + bool ok = parse_datetime2 (result, p, now, 0, tz, tzstring); + tzfree (tz); + return ok; +} + +/* Parse a date/time string, storing the resulting time value into *RESULT. + The string itself is pointed to by P. Return true if successful. + P can be an incomplete or relative time specification; if so, use + *NOW as the basis for the returned time. Default to timezone + TZDEFAULT, which corresponds to tzalloc (TZSTRING). */ +bool +parse_datetime2 (struct timespec *result, char const *p, + struct timespec const *now, unsigned int flags, + timezone_t tzdefault, char const *tzstring) +{ + struct tm tm; + struct tm tm0; + char time_zone_buf[TIME_ZONE_BUFSIZE]; + char dbg_tm[DBGBUFSIZE]; + bool ok = false; + char const *input_sentinel = p + strlen (p); + char *tz1alloc = NULL; + + /* A reasonable upper bound for the size of ordinary TZ strings. + Use heap allocation if TZ's length exceeds this. */ + enum { TZBUFSIZE = 100 }; + char tz1buf[TZBUFSIZE]; + + struct timespec gettime_buffer; + if (! now) + { + gettime (&gettime_buffer); + now = &gettime_buffer; + } + + time_t Start = now->tv_sec; + int Start_ns = now->tv_nsec; + + unsigned char c; + while (c = *p, c_isspace (c)) + p++; + + timezone_t tz = tzdefault; + + /* Store a local copy prior to first "goto". Without this, a prior use + below of RELATIVE_TIME_0 on the RHS might translate to an assignment- + to-temporary, which would trigger a -Wjump-misses-init warning. */ + const relative_time rel_time_0 = RELATIVE_TIME_0; + + if (strncmp (p, "TZ=\"", 4) == 0) + { + char const *tzbase = p + 4; + ptrdiff_t tzsize = 1; + char const *s; + + for (s = tzbase; *s; s++, tzsize++) + if (*s == '\\') + { + s++; + if (! (*s == '\\' || *s == '"')) + break; + } + else if (*s == '"') + { + timezone_t tz1; + char *tz1string = tz1buf; + char *z; + if (TZBUFSIZE < tzsize) + { + tz1alloc = malloc (tzsize); + if (!tz1alloc) + goto fail; + tz1string = tz1alloc; + } + z = tz1string; + for (s = tzbase; *s != '"'; s++) + *z++ = *(s += *s == '\\'); + *z = '\0'; + tz1 = tzalloc (tz1string); + if (!tz1) + goto fail; + tz = tz1; + tzstring = tz1string; + + p = s + 1; + while (c = *p, c_isspace (c)) + p++; + + break; + } + } + + struct tm tmp; + if (! localtime_rz (tz, &now->tv_sec, &tmp)) + goto fail; + + /* 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"; + + parser_control pc; + pc.input = p; + pc.parse_datetime_debug = (flags & PARSE_DATETIME_DEBUG) != 0; + if (INT_ADD_WRAPV (tmp.tm_year, TM_YEAR_BASE, &pc.year.value)) + { + if (pc.parse_datetime_debug) + dbg_printf (_("error: initial year out of range\n")); + goto fail; + } + 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 = rel_time_0; + pc.timespec_seen = false; + pc.rels_seen = false; + 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; + pc.year_seen = false; + pc.debug_dates_seen = false; + pc.debug_days_seen = false; + pc.debug_times_seen = false; + pc.debug_local_zones_seen = false; + pc.debug_zones_seen = false; + pc.debug_year_seen = false; + pc.debug_ordinal_day_seen = false; + +#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++) + { + intmax_t iprobe; + if (INT_ADD_WRAPV (Start, quarter * (90 * 24 * 60 * 60), &iprobe) + || time_overflow (iprobe)) + break; + time_t probe = iprobe; + struct tm probe_tm; + if (localtime_rz (tz, &probe, &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) + { + if (pc.parse_datetime_debug) + dbg_printf ((input_sentinel <= pc.input + ? _("error: parsing failed\n") + : _("error: parsing failed, stopped at '%s'\n")), + pc.input); + goto fail; + } + + + /* Determine effective timezone source. */ + + if (pc.parse_datetime_debug) + { + dbg_printf (_("input timezone: ")); + + if (pc.timespec_seen) + fprintf (stderr, _("'@timespec' - always UTC")); + else if (pc.zones_seen) + fprintf (stderr, _("parsed date/time string")); + else if (tzstring) + { + if (tz != tzdefault) + fprintf (stderr, _("TZ=\"%s\" in date string"), tzstring); + else if (STREQ (tzstring, "UTC0")) + { + /* Special case: 'date -u' sets TZ="UTC0". */ + fprintf (stderr, _("TZ=\"UTC0\" environment value or -u")); + } + else + fprintf (stderr, _("TZ=\"%s\" environment value"), tzstring); + } + else + fprintf (stderr, _("system default")); + + /* Account for DST changes if tLOCAL_ZONE was seen. + local timezone only changes DST and is relative to the + default timezone.*/ + if (pc.local_zones_seen && !pc.zones_seen && 0 < pc.local_isdst) + fprintf (stderr, ", dst"); + + if (pc.zones_seen) + fprintf (stderr, " (%s)", time_zone_str (pc.time_zone, time_zone_buf)); + + fputc ('\n', stderr); + } + + 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))) + { + if (pc.parse_datetime_debug) + { + if (pc.times_seen > 1) + dbg_printf ("error: seen multiple time parts\n"); + if (pc.dates_seen > 1) + dbg_printf ("error: seen multiple date parts\n"); + if (pc.days_seen > 1) + dbg_printf ("error: seen multiple days parts\n"); + if (pc.dsts_seen > 1) + dbg_printf ("error: seen multiple daylight-saving parts\n"); + if ((pc.local_zones_seen + pc.zones_seen) > 1) + dbg_printf ("error: seen multiple time-zone parts\n"); + } + goto fail; + } + + if (! to_tm_year (pc.year, pc.parse_datetime_debug, &tm.tm_year) + || INT_ADD_WRAPV (pc.month, -1, &tm.tm_mon) + || INT_ADD_WRAPV (pc.day, 0, &tm.tm_mday)) + { + if (pc.parse_datetime_debug) + dbg_printf (_("error: year, month, or day overflow\n")); + goto fail; + } + 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) + { + char const *mrd = (pc.meridian == MERam ? "am" + : pc.meridian == MERpm ?"pm" : ""); + if (pc.parse_datetime_debug) + dbg_printf (_("error: invalid hour %"PRIdMAX"%s\n"), + pc.hour, mrd); + goto fail; + } + tm.tm_min = pc.minutes; + tm.tm_sec = pc.seconds.tv_sec; + if (pc.parse_datetime_debug) + dbg_printf ((pc.times_seen + ? _("using specified time as starting value: '%s'\n") + : _("using current time as starting value: '%s'\n")), + debug_strftime (&tm, dbg_tm, sizeof dbg_tm)); + } + else + { + tm.tm_hour = tm.tm_min = tm.tm_sec = 0; + pc.seconds.tv_nsec = 0; + if (pc.parse_datetime_debug) + dbg_printf ("warning: using midnight as starting time: 00:00:00\n"); + } + + /* 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_sec = tm.tm_sec; + tm0.tm_min = tm.tm_min; + tm0.tm_hour = tm.tm_hour; + tm0.tm_mday = tm.tm_mday; + tm0.tm_mon = tm.tm_mon; + tm0.tm_year = tm.tm_year; + tm0.tm_isdst = tm.tm_isdst; + tm.tm_wday = -1; + + Start = mktime_z (tz, &tm); + + if (! mktime_ok (&tm0, &tm)) + { + bool repaired = false; + bool time_zone_seen = pc.zones_seen != 0; + if (time_zone_seen) + { + /* 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. */ + + char tz2buf[sizeof "XXX" - 1 + TIME_ZONE_BUFSIZE]; + tz2buf[0] = tz2buf[1] = tz2buf[2] = 'X'; + time_zone_str (pc.time_zone, &tz2buf[3]); + timezone_t tz2 = tzalloc (tz2buf); + if (!tz2) + { + if (pc.parse_datetime_debug) + dbg_printf (_("error: tzalloc (\"%s\") failed\n"), tz2buf); + goto fail; + } + tm.tm_sec = tm0.tm_sec; + tm.tm_min = tm0.tm_min; + tm.tm_hour = tm0.tm_hour; + tm.tm_mday = tm0.tm_mday; + tm.tm_mon = tm0.tm_mon; + tm.tm_year = tm0.tm_year; + tm.tm_isdst = tm0.tm_isdst; + tm.tm_wday = -1; + Start = mktime_z (tz2, &tm); + repaired = mktime_ok (&tm0, &tm); + tzfree (tz2); + } + + if (! repaired) + { + debug_mktime_not_ok (&tm0, &tm, &pc, time_zone_seen); + goto fail; + } + } + + char dbg_ord[DBGBUFSIZE]; + + if (pc.days_seen && ! pc.dates_seen) + { + intmax_t dayincr; + if (INT_MULTIPLY_WRAPV ((pc.day_ordinal + - (0 < pc.day_ordinal + && tm.tm_wday != pc.day_number)), + 7, &dayincr) + || INT_ADD_WRAPV ((pc.day_number - tm.tm_wday + 7) % 7, + dayincr, &dayincr) + || INT_ADD_WRAPV (dayincr, tm.tm_mday, &tm.tm_mday)) + Start = -1; + else + { + tm.tm_isdst = -1; + Start = mktime_z (tz, &tm); + } + + if (Start == (time_t) -1) + { + if (pc.parse_datetime_debug) + dbg_printf (_("error: day '%s' " + "(day ordinal=%"PRIdMAX" number=%d) " + "resulted in an invalid date: '%s'\n"), + str_days (&pc, dbg_ord, sizeof dbg_ord), + pc.day_ordinal, pc.day_number, + debug_strfdatetime (&tm, &pc, dbg_tm, + sizeof dbg_tm)); + goto fail; + } + + if (pc.parse_datetime_debug) + dbg_printf (_("new start date: '%s' is '%s'\n"), + str_days (&pc, dbg_ord, sizeof dbg_ord), + debug_strfdatetime (&tm, &pc, dbg_tm, sizeof dbg_tm)); + + } + + if (pc.parse_datetime_debug) + { + if (!pc.dates_seen && !pc.days_seen) + dbg_printf (_("using current date as starting value: '%s'\n"), + debug_strfdate (&tm, dbg_tm, sizeof dbg_tm)); + + if (pc.days_seen && pc.dates_seen) + dbg_printf (_("warning: day (%s) ignored when explicit dates " + "are given\n"), + str_days (&pc, dbg_ord, sizeof dbg_ord)); + + dbg_printf (_("starting date/time: '%s'\n"), + debug_strfdatetime (&tm, &pc, dbg_tm, sizeof dbg_tm)); + } + + /* Add relative date. */ + if (pc.rel.year | pc.rel.month | pc.rel.day) + { + if (pc.parse_datetime_debug) + { + if ((pc.rel.year != 0 || pc.rel.month != 0) && tm.tm_mday != 15) + dbg_printf (_("warning: when adding relative months/years, " + "it is recommended to specify the 15th of the " + "months\n")); + + if (pc.rel.day != 0 && tm.tm_hour != 12) + dbg_printf (_("warning: when adding relative days, " + "it is recommended to specify noon\n")); + } + + int year, month, day; + if (INT_ADD_WRAPV (tm.tm_year, pc.rel.year, &year) + || INT_ADD_WRAPV (tm.tm_mon, pc.rel.month, &month) + || INT_ADD_WRAPV (tm.tm_mday, pc.rel.day, &day)) + { + if (pc.parse_datetime_debug) + dbg_printf (_("error: %s:%d\n"), __FILE__, __LINE__); + 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_z (tz, &tm); + if (Start == (time_t) -1) + { + if (pc.parse_datetime_debug) + dbg_printf (_("error: adding relative date resulted " + "in an invalid date: '%s'\n"), + debug_strfdatetime (&tm, &pc, dbg_tm, + sizeof dbg_tm)); + goto fail; + } + + if (pc.parse_datetime_debug) + { + dbg_printf (_("after date adjustment " + "(%+"PRIdMAX" years, %+"PRIdMAX" months, " + "%+"PRIdMAX" days),\n"), + pc.rel.year, pc.rel.month, pc.rel.day); + dbg_printf (_(" new date/time = '%s'\n"), + debug_strfdatetime (&tm, &pc, dbg_tm, + sizeof dbg_tm)); + + /* Warn about crossing DST due to time adjustment. + Example: https://bugs.gnu.org/8357 + env TZ=Europe/Helsinki \ + date --debug \ + -d 'Mon Mar 28 00:36:07 2011 EEST 1 day ago' + + This case is different than DST changes due to time adjustment, + i.e., "1 day ago" vs "24 hours ago" are calculated in different + places. + + 'tm0.tm_isdst' contains the DST of the input date, + 'tm.tm_isdst' is the normalized result after calling + mktime (&tm). + */ + if (tm0.tm_isdst != -1 && tm.tm_isdst != tm0.tm_isdst) + dbg_printf (_("warning: daylight saving time changed after " + "date adjustment\n")); + + /* Warn if the user did not ask to adjust days but mday changed, + or + user did not ask to adjust months/days but the month changed. + + Example for first case: + 2016-05-31 + 1 month => 2016-06-31 => 2016-07-01. + User asked to adjust month, but the day changed from 31 to 01. + + Example for second case: + 2016-02-29 + 1 year => 2017-02-29 => 2017-03-01. + User asked to adjust year, but the month changed from 02 to 03. + */ + if (pc.rel.day == 0 + && (tm.tm_mday != day + || (pc.rel.month == 0 && tm.tm_mon != month))) + { + dbg_printf (_("warning: month/year adjustment resulted in " + "shifted dates:\n")); + char tm_year_buf[TM_YEAR_BUFSIZE]; + dbg_printf (_(" adjusted Y M D: %s %02d %02d\n"), + tm_year_str (year, tm_year_buf), month + 1, day); + dbg_printf (_(" normalized Y M D: %s %02d %02d\n"), + tm_year_str (tm.tm_year, tm_year_buf), + tm.tm_mon + 1, tm.tm_mday); + } + } + + } + + /* 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, t1; + bool overflow = false; +#ifdef HAVE_TM_GMTOFF + long int utcoff = tm.tm_gmtoff; +#else + time_t t = Start; + struct tm gmt; + int utcoff = (gmtime_r (&t, &gmt) + ? tm_diff (&tm, &gmt) + : (overflow = true, 0)); +#endif + overflow |= INT_SUBTRACT_WRAPV (delta, utcoff, &delta); + overflow |= INT_SUBTRACT_WRAPV (Start, delta, &t1); + if (overflow || time_overflow (t1)) + { + if (pc.parse_datetime_debug) + dbg_printf (_("error: timezone %d caused time_t overflow\n"), + pc.time_zone); + goto fail; + } + Start = t1; + } + + if (pc.parse_datetime_debug) + { + intmax_t Starti = Start; + dbg_printf (_("'%s' = %"PRIdMAX" epoch-seconds\n"), + debug_strfdatetime (&tm, &pc, dbg_tm, sizeof dbg_tm), + Starti); + } + + + /* 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 orig_ns = pc.seconds.tv_nsec; + intmax_t sum_ns = orig_ns + pc.rel.ns; + int normalized_ns = (sum_ns % BILLION + BILLION) % BILLION; + int d4 = (sum_ns - normalized_ns) / BILLION; + intmax_t d1, t1, d2, t2, t3, t4; + if (INT_MULTIPLY_WRAPV (pc.rel.hour, 60 * 60, &d1) + || INT_ADD_WRAPV (Start, d1, &t1) + || INT_MULTIPLY_WRAPV (pc.rel.minutes, 60, &d2) + || INT_ADD_WRAPV (t1, d2, &t2) + || INT_ADD_WRAPV (t2, pc.rel.seconds, &t3) + || INT_ADD_WRAPV (t3, d4, &t4) + || time_overflow (t4)) + { + if (pc.parse_datetime_debug) + dbg_printf (_("error: adding relative time caused an " + "overflow\n")); + goto fail; + } + + result->tv_sec = t4; + result->tv_nsec = normalized_ns; + + if (pc.parse_datetime_debug + && (pc.rel.hour | pc.rel.minutes | pc.rel.seconds | pc.rel.ns)) + { + dbg_printf (_("after time adjustment (%+"PRIdMAX" hours, " + "%+"PRIdMAX" minutes, " + "%+"PRIdMAX" seconds, %+d ns),\n"), + pc.rel.hour, pc.rel.minutes, pc.rel.seconds, + pc.rel.ns); + dbg_printf (_(" new time = %"PRIdMAX" epoch-seconds\n"), t4); + + /* Warn about crossing DST due to time adjustment. + Example: https://bugs.gnu.org/8357 + env TZ=Europe/Helsinki \ + date --debug \ + -d 'Mon Mar 28 00:36:07 2011 EEST 24 hours ago' + + This case is different than DST changes due to days adjustment, + i.e., "1 day ago" vs "24 hours ago" are calculated in different + places. + + 'tm.tm_isdst' contains the date after date adjustment. */ + struct tm lmt; + if (tm.tm_isdst != -1 && localtime_rz (tz, &result->tv_sec, &lmt) + && tm.tm_isdst != lmt.tm_isdst) + dbg_printf (_("warning: daylight saving time changed after " + "time adjustment\n")); + } + } + } + + if (pc.parse_datetime_debug) + { + /* Special case: using 'date -u' simply set TZ=UTC0 */ + if (! tzstring) + dbg_printf (_("timezone: system default\n")); + else if (STREQ (tzstring, "UTC0")) + dbg_printf (_("timezone: Universal Time\n")); + else + dbg_printf (_("timezone: TZ=\"%s\" environment value\n"), tzstring); + + intmax_t sec = result->tv_sec; + int nsec = result->tv_nsec; + dbg_printf (_("final: %"PRIdMAX".%09d (epoch-seconds)\n"), + sec, nsec); + + struct tm gmt, lmt; + bool got_utc = !!gmtime_r (&result->tv_sec, &gmt); + if (got_utc) + dbg_printf (_("final: %s (UTC)\n"), + debug_strfdatetime (&gmt, NULL, + dbg_tm, sizeof dbg_tm)); + if (localtime_rz (tz, &result->tv_sec, &lmt)) + { +#ifdef HAVE_TM_GMTOFF + bool got_utcoff = true; + long int utcoff = lmt.tm_gmtoff; +#else + bool got_utcoff = got_utc; + int utcoff; + if (got_utcoff) + utcoff = tm_diff (&lmt, &gmt); +#endif + if (got_utcoff) + dbg_printf (_("final: %s (UTC%s)\n"), + debug_strfdatetime (&lmt, NULL, dbg_tm, sizeof dbg_tm), + time_zone_str (utcoff, time_zone_buf)); + else + dbg_printf (_("final: %s (unknown time zone offset)\n"), + debug_strfdatetime (&lmt, NULL, dbg_tm, sizeof dbg_tm)); + } + } + + ok = true; + + fail: + if (tz != tzdefault) + tzfree (tz); + free (tz1alloc); + return ok; +} + +#if TEST + +int +main (int ac, char **av) +{ + char buff[BUFSIZ]; + + printf ("Enter date, or blank line to exit.\n\t> "); + fflush (stdout); + + buff[BUFSIZ - 1] = '\0'; + while (fgets (buff, BUFSIZ - 1, stdin) && buff[0]) + { + struct timespec d; + struct tm const *tm; + if (! parse_datetime (&d, buff, NULL)) + printf ("Bad format - couldn't convert.\n"); + else if (! (tm = localtime (&d.tv_sec))) + { + intmax_t sec = d.tv_sec; + printf ("localtime (%"PRIdMAX") failed\n", sec); + } + else + { + int ns = d.tv_nsec; + char tm_year_buf[TM_YEAR_BUFSIZE]; + printf ("%s-%02d-%02d %02d:%02d:%02d.%09d\n", + tm_year_str (tm->tm_year, tm_year_buf), + tm->tm_mon + 1, tm->tm_mday, + tm->tm_hour, tm->tm_min, tm->tm_sec, ns); + } + printf ("\t> "); + fflush (stdout); + } + return 0; +} +#endif /* TEST */ |