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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-15 05:40:05 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-15 05:40:05 +0000 |
commit | 4038ab95a094b363f1748f3dcb51511a1217475d (patch) | |
tree | 7f393d66a783f91ddd263c78d681e485cf4f45ca /src/parsedate.y | |
parent | Initial commit. (diff) | |
download | raptor2-4038ab95a094b363f1748f3dcb51511a1217475d.tar.xz raptor2-4038ab95a094b363f1748f3dcb51511a1217475d.zip |
Adding upstream version 2.0.16.upstream/2.0.16upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/parsedate.y')
-rw-r--r-- | src/parsedate.y | 1161 |
1 files changed, 1161 insertions, 0 deletions
diff --git a/src/parsedate.y b/src/parsedate.y new file mode 100644 index 0000000..77f5d4f --- /dev/null +++ b/src/parsedate.y @@ -0,0 +1,1161 @@ +%{ +/* + * Imported from the public domain source in PHP 4.4 + * Fri May 20 07:14:01 2005 + * https://github.com/php/php-src/blob/379c4af44aa6456fbdbc69dba3ead166ba7ff67d/ext/standard/parsedate.y + * + * and patched from there + * + * Later versions removed this from PHP and replaced it with entirely + * new code written under the PHP license. That code is not used here + * and cannot be used. + * + */ + + +/* +** 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. +** +** This code is in the public domain and has no copyright. +*/ + + +#ifdef HAVE_CONFIG_H +#include <raptor_config.h> +#endif + +#include <stdio.h> +#include <sys/types.h> +#include <ctype.h> + +#ifdef HAVE_SYS_TIME_H +#include <sys/time.h> +#endif +#ifdef HAVE_TIME_H +#include <time.h> +#endif + +#ifdef HAVE_STDLIB_H +#include <stdlib.h> +#endif + +#if defined(_HPUX_SOURCE) +#include <alloca.h> +#endif + +#include "raptor2.h" +#include "raptor_internal.h" + + +#define ISDIGIT(c) ((unsigned) (c) - '0' <= 9) + +#ifdef HAVE_STRING_H +# include <string.h> +#endif + +#if !defined(__GNUC__) || __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 7) +# define __attribute__(x) +#endif + +#ifndef ATTRIBUTE_UNUSED +# define ATTRIBUTE_UNUSED __attribute__ ((__unused__)) +#endif + +/* Some old versions of bison generate parsers that use bcopy. + That loses on systems that don't provide the function, so we have + to redefine it here. */ +#if !defined (HAVE_BCOPY) && defined (HAVE_MEMCPY) && !defined (bcopy) +# define bcopy(from, to, len) memcpy ((to), (from), (len)) +#endif + +/* Prototypes */ +static int raptor_parsedate_error(void* parm, const char *msg); + + +#define EPOCH 1970 +#define HOUR(x) ((x) * 60) + +#define MAX_BUFF_LEN 128 /* size of buffer to read the date into */ + +/* +** An entry in the lexical lookup table. +*/ +typedef struct _TABLE { + const char *name; + int type; + int value; +} TABLE; + + +/* +** Meridian: am, pm, or 24-hour style. +*/ +typedef enum _MERIDIAN { + MERam, MERpm, MER24 +} MERIDIAN; + +struct date_yy { + const char *yyInput; + int yyDayOrdinal; + int yyDayNumber; + int yyHaveDate; + int yyHaveDay; + int yyHaveRel; + int yyHaveTime; + int yyHaveZone; + int yyTimezone; + int yyDay; + int yyHour; + int yyMinutes; + int yyMonth; + int yySeconds; + int yyYear; + MERIDIAN yyMeridian; + int yyRelDay; + int yyRelHour; + int yyRelMinutes; + int yyRelMonth; + int yyRelSeconds; + int yyRelYear; +}; + +typedef union _date_ll { + int Number; + enum _MERIDIAN Meridian; +} date_ll; + +#define YYPARSE_PARAM parm +#define YYLEX_PARAM parm +#define YYSTYPE date_ll +#define YYLTYPE void + +static int yylex (YYSTYPE *lvalp, void *parm); + +static int ToHour (int Hours, MERIDIAN Meridian); +static int ToYear (int Year); +static int LookupWord (YYSTYPE *lvalp, char *buff); + +%} + +/* directives */ + +%require "3.0" + +/* File prefix (bison -b) */ +%file-prefix "parsedate" + +/* Symbol prefix (bison -d : deprecated) */ +%define api.prefix {raptor_parsedate_} + +/* Write parser header file with macros (bison -d) */ +%defines + +/* Write output file with verbose descriptions of parser states */ +%verbose + +%define api.pure true + +/* This grammar has 56 shift/reduce conflicts. */ +%expect 56 + +%param { struct date_yy *parm } + +%token tAGO tDAY tDAY_UNIT tDAYZONE tDST tHOUR_UNIT tID tTZONE tWZONE tZZONE +%token tMERIDIAN tMINUTE_UNIT tMONTH tMONTH_UNIT +%token tSEC_UNIT tSNUMBER tUNUMBER tYEAR_UNIT tZONE + +%type <Number> tDAY tDAY_UNIT tDAYZONE tHOUR_UNIT tMINUTE_UNIT +%type <Number> tMONTH tMONTH_UNIT +%type <Number> tSEC_UNIT tSNUMBER tUNUMBER tYEAR_UNIT tZONE tTZONE tWZONE tZZONE +%type <Meridian> tMERIDIAN + +%% + +spec : /* NULL */ + | spec item + ; + +item : time { + ((struct date_yy *)parm)->yyHaveTime++; + } + | zone { + ((struct date_yy *)parm)->yyHaveZone++; + } + | date { + ((struct date_yy *)parm)->yyHaveDate++; + } + | day { + ((struct date_yy *)parm)->yyHaveDay++; + } + | rel { + ((struct date_yy *)parm)->yyHaveRel++; + } + | number + | o_merid + ; + +time : tUNUMBER tMERIDIAN { + ((struct date_yy *)parm)->yyHour = $1; + ((struct date_yy *)parm)->yyMinutes = 0; + ((struct date_yy *)parm)->yySeconds = 0; + ((struct date_yy *)parm)->yyMeridian = $2; + } + | iso8601time_colon + /* | pgsqltime ... shares a common spec with ISO8601 */ + ; + +iso8601time_colon: HMStime_with_colon sec_fraction_part rel { + ((struct date_yy *)parm)->yyMeridian = MER24; + } + | HMtime_with_colon sec_fraction_part rel { + ((struct date_yy *)parm)->yyMeridian = MER24; + ((struct date_yy *)parm)->yySeconds = 0; + } + | HMStime_with_colon sec_fraction_part iso8601zonepart { + ((struct date_yy *)parm)->yyMeridian = MER24; + } + | HMtime_with_colon sec_fraction_part iso8601zonepart { + ((struct date_yy *)parm)->yyMeridian = MER24; + ((struct date_yy *)parm)->yySeconds = 0; + } + ; + +iso8601zonepart: zonepart_numeric_without_colon { + ((struct date_yy *)parm)->yyHaveZone++; + } + | zonepart_numeric_with_colon { + ((struct date_yy *)parm)->yyHaveZone++; + } + | zone { + ((struct date_yy *)parm)->yyHaveZone++; + } + | /* empty */ + ; + +sec_fraction_part: '.' tUNUMBER { + } + | /* empty */ + ; + +zonepart_numeric_without_colon: tSNUMBER { + /* format: [+-]hhmm */ + if($1 <= -100 || $1 >= 100) { + ((struct date_yy *)parm)->yyTimezone = (-$1 / 100) * 60 + (-$1 % 100); + } else if($1 >= -99 && $1 <= 99) { + ((struct date_yy *)parm)->yyTimezone = -$1 * 60; + } + } + ; + +zonepart_numeric_with_colon: tSNUMBER ':' tUNUMBER { + /* format: [+-]hh:mm */ + ((struct date_yy *)parm)->yyTimezone = -$1 * 60 + ($1 > 0 ? -$3: $3); + } + ; + +HMStime_with_colon: HMtime_with_colon ':' tUNUMBER { + /* format: hh:mm:ss */ + ((struct date_yy *)parm)->yySeconds = $3; + } + ; + +HMtime_with_colon: tUNUMBER ':' tUNUMBER { + /* format: hh:mm */ + ((struct date_yy *)parm)->yyHour = $1; + ((struct date_yy *)parm)->yyMinutes = $3; + } + ; + + + /* we have to deal with a special case for the datetime format + of XML Schema here: '2003-11-18T22:40:00Z' + the combination of a 'T' timezone specifier later followed + by a 'Z' is now recognized and allowed + TODO: change the grammer so that the exact positions are checked + right now '2003-11-18 22:40:00 TZ' is also accepted (hartmut) + */ + +zone : tTZONE { + ((struct date_yy *)parm)->yyTimezone = $1; + } + | tWZONE { + ((struct date_yy *)parm)->yyTimezone = $1; + } + | tZZONE { + ((struct date_yy *)parm)->yyTimezone = $1; + } + | tZONE { + ((struct date_yy *)parm)->yyTimezone = $1; + } + | tDAYZONE { + ((struct date_yy *)parm)->yyTimezone = $1 - 60; + } + | tZONE tDST { + ((struct date_yy *)parm)->yyTimezone = $1 - 60; + } + ; + +day : tDAY { + ((struct date_yy *)parm)->yyDayOrdinal = 1; + ((struct date_yy *)parm)->yyDayNumber = $1; + } + | tDAY ',' { + ((struct date_yy *)parm)->yyDayOrdinal = 1; + ((struct date_yy *)parm)->yyDayNumber = $1; + } + | tUNUMBER tDAY { + ((struct date_yy *)parm)->yyDayOrdinal = $1; + ((struct date_yy *)parm)->yyDayNumber = $2; + } + ; + +date : tUNUMBER '/' tUNUMBER { + ((struct date_yy *)parm)->yyMonth = $1; + ((struct date_yy *)parm)->yyDay = $3; + } + | tMONTH tUNUMBER tUNUMBER ':' tUNUMBER ':' tUNUMBER tUNUMBER { + ((struct date_yy *)parm)->yyYear = $8; + ((struct date_yy *)parm)->yyMonth = $1; + ((struct date_yy *)parm)->yyDay = $2; + + ((struct date_yy *)parm)->yyHour = $3; + ((struct date_yy *)parm)->yyMinutes = $5; + ((struct date_yy *)parm)->yySeconds = $7; + + ((struct date_yy *)parm)->yyHaveTime = 1; + } + | tUNUMBER '/' tUNUMBER '/' tUNUMBER { + /* Interpret as YYYY/MM/DD if $1 >= 1000, 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($1 >= 1000) + { + ((struct date_yy *)parm)->yyYear = $1; + ((struct date_yy *)parm)->yyMonth = $3; + ((struct date_yy *)parm)->yyDay = $5; + } + else + { + ((struct date_yy *)parm)->yyMonth = $1; + ((struct date_yy *)parm)->yyDay = $3; + ((struct date_yy *)parm)->yyYear = $5; + } + } + | iso8601date + | iso8601datetime { + ((struct date_yy *)parm)->yyHaveTime++; + } + | tUNUMBER tMONTH tSNUMBER { + /* e.g. 17-JUN-1992. */ + ((struct date_yy *)parm)->yyDay = $1; + ((struct date_yy *)parm)->yyMonth = $2; + ((struct date_yy *)parm)->yyYear = -$3; + } + | tMONTH tUNUMBER tUNUMBER { + ((struct date_yy *)parm)->yyMonth = $1; + ((struct date_yy *)parm)->yyDay = $2; + ((struct date_yy *)parm)->yyYear = $3; + } + | tMONTH tUNUMBER { + ((struct date_yy *)parm)->yyMonth = $1; + if($2 > 1000) { + ((struct date_yy *)parm)->yyYear = $2; + } else { + ((struct date_yy *)parm)->yyDay = $2; + } + } + | tMONTH tUNUMBER ',' tUNUMBER { + ((struct date_yy *)parm)->yyMonth = $1; + ((struct date_yy *)parm)->yyDay = $2; + ((struct date_yy *)parm)->yyYear = $4; + } + | tUNUMBER tMONTH { + ((struct date_yy *)parm)->yyMonth = $2; + if($1 > 1000) { + ((struct date_yy *)parm)->yyYear = $1; + } else { + ((struct date_yy *)parm)->yyDay = $1; + } + } + | tUNUMBER tMONTH tUNUMBER { + ((struct date_yy *)parm)->yyMonth = $2; + ((struct date_yy *)parm)->yyDay = $1; + ((struct date_yy *)parm)->yyYear = $3; + } + ; + +iso8601datetime: iso8601date tTZONE iso8601time + | tUNUMBER tTZONE iso8601time { + int i = $1; + + if(i >= 10000) { + /* format: yyyymmdd */ + ((struct date_yy *)parm)->yyYear = i / 10000; + i %= 10000; + ((struct date_yy *)parm)->yyMonth = i / 100; + i %= 100; + ((struct date_yy *)parm)->yyDay = i; + } else if(i >= 1000 && i <= 9999) { + /* format: yyyy */ + ((struct date_yy *)parm)->yyYear = i; + ((struct date_yy *)parm)->yyDay= 1; + ((struct date_yy *)parm)->yyMonth = 1; + } + } + ; + +iso8601date: tUNUMBER tSNUMBER tSNUMBER { + /* ISO 8601 format. yyyy-mm-dd. */ + ((struct date_yy *)parm)->yyYear = $1; + ((struct date_yy *)parm)->yyMonth = -$2; + ((struct date_yy *)parm)->yyDay = -$3; + } + | tUNUMBER tSNUMBER { + /* ISO 8601 format yyyy-mm */ + ((struct date_yy *)parm)->yyYear = $1; + ((struct date_yy *)parm)->yyMonth = -$2; + ((struct date_yy *)parm)->yyDay = 1; + } + | tUNUMBER iso8601weekspec { + const int om = (1 + 9) % 12; /* offset month */ + const int oy = $1 - 1; /* offset year */ + + ((struct date_yy *)parm)->yyYear = $1; + ((struct date_yy *)parm)->yyMonth = 1; + /* Zeller's formula */ + ((struct date_yy *)parm)->yyDay -= ((13 * om + 12) / 5 + + oy + oy / 4 + oy / 400 - oy / 100) % 7 - 1; + } + ; + +iso8601weekspec: tWZONE tUNUMBER { + ((struct date_yy *)parm)->yyDay = ($2 / 10) * 7 + ($2 % 10) - 8; + } + | tWZONE tUNUMBER tSNUMBER { + ((struct date_yy *)parm)->yyDay = $2 * 7 - $3 - 8; + } + ; + +iso8601time: + iso8601time_colon + | tUNUMBER sec_fraction_part iso8601zonepart { + int i = $1; + + if(i <= -100000 || i >= 100000) { + ((struct date_yy *)parm)->yyHour = i / 10000; + i %= 10000; + ((struct date_yy *)parm)->yyMinutes = i / 100; + i %= 100; + ((struct date_yy *)parm)->yySeconds = i; + } else if(i <= -1000 || i >= 1000) { + ((struct date_yy *)parm)->yyHour = i / 100; + i %= 100; + ((struct date_yy *)parm)->yyMinutes = i; + ((struct date_yy *)parm)->yySeconds = 0; + } else if(i >= -99 && i <= 99) { + ((struct date_yy *)parm)->yyHour = i; + ((struct date_yy *)parm)->yyMinutes = 0; + ((struct date_yy *)parm)->yySeconds = 0; + } else { + ((struct date_yy *)parm)->yyHaveTime = 0; + } + ((struct date_yy *)parm)->yyMeridian = MER24; + } + ; + +rel : relunit tAGO { + ((struct date_yy *)parm)->yyRelSeconds = + -((struct date_yy *)parm)->yyRelSeconds; + ((struct date_yy *)parm)->yyRelMinutes = + -((struct date_yy *)parm)->yyRelMinutes; + ((struct date_yy *)parm)->yyRelHour = + -((struct date_yy *)parm)->yyRelHour; + ((struct date_yy *)parm)->yyRelDay = + -((struct date_yy *)parm)->yyRelDay; + ((struct date_yy *)parm)->yyRelMonth = + -((struct date_yy *)parm)->yyRelMonth; + ((struct date_yy *)parm)->yyRelYear = + -((struct date_yy *)parm)->yyRelYear; + } + | relunit + ; + +relunit : tUNUMBER tYEAR_UNIT { + ((struct date_yy *)parm)->yyRelYear += $1 * $2; + } + | tSNUMBER tYEAR_UNIT { + ((struct date_yy *)parm)->yyRelYear += $1 * $2; + } + | tYEAR_UNIT { + ((struct date_yy *)parm)->yyRelYear += $1; + } + | tUNUMBER tMONTH_UNIT { + ((struct date_yy *)parm)->yyRelMonth += $1 * $2; + } + | tSNUMBER tMONTH_UNIT { + ((struct date_yy *)parm)->yyRelMonth += $1 * $2; + } + | tMONTH_UNIT { + ((struct date_yy *)parm)->yyRelMonth += $1; + } + | tUNUMBER tDAY_UNIT { + ((struct date_yy *)parm)->yyRelDay += $1 * $2; + } + | tSNUMBER tDAY_UNIT { + ((struct date_yy *)parm)->yyRelDay += $1 * $2; + } + | tDAY_UNIT { + ((struct date_yy *)parm)->yyRelDay += $1; + } + | tUNUMBER tHOUR_UNIT { + ((struct date_yy *)parm)->yyRelHour += $1 * $2; + } + | tSNUMBER tHOUR_UNIT { + ((struct date_yy *)parm)->yyRelHour += $1 * $2; + } + | tHOUR_UNIT { + ((struct date_yy *)parm)->yyRelHour += $1; + } + | tUNUMBER tMINUTE_UNIT { + ((struct date_yy *)parm)->yyRelMinutes += $1 * $2; + } + | tSNUMBER tMINUTE_UNIT { + ((struct date_yy *)parm)->yyRelMinutes += $1 * $2; + } + | tMINUTE_UNIT { + ((struct date_yy *)parm)->yyRelMinutes += $1; + } + | tUNUMBER tSEC_UNIT { + ((struct date_yy *)parm)->yyRelSeconds += $1 * $2; + } + | tSNUMBER tSEC_UNIT { + ((struct date_yy *)parm)->yyRelSeconds += $1 * $2; + } + | tSEC_UNIT { + ((struct date_yy *)parm)->yyRelSeconds += $1; + } + ; + +number : tUNUMBER + { + if(((struct date_yy *)parm)->yyHaveTime && + ((struct date_yy *)parm)->yyHaveDate && + !((struct date_yy *)parm)->yyHaveRel) + ((struct date_yy *)parm)->yyYear = $1; + else + { + if($1 > 10000) + { + ((struct date_yy *)parm)->yyHaveDate++; + ((struct date_yy *)parm)->yyDay= ($1)%100; + ((struct date_yy *)parm)->yyMonth= ($1/100)%100; + ((struct date_yy *)parm)->yyYear = $1/10000; + } + else + { + ((struct date_yy *)parm)->yyHaveTime++; + if($1 < 100) + { + ((struct date_yy *)parm)->yyHour = $1; + ((struct date_yy *)parm)->yyMinutes = 0; + } + else + { + ((struct date_yy *)parm)->yyHour = $1 / 100; + ((struct date_yy *)parm)->yyMinutes = $1 % 100; + } + ((struct date_yy *)parm)->yySeconds = 0; + ((struct date_yy *)parm)->yyMeridian = MER24; + } + } + } + ; + +o_merid : tMERIDIAN + { + ((struct date_yy *)parm)->yyMeridian = $1; + } + ; + +%% + +time_t get_date (char *p, time_t *now); + +/* Month and day table. */ +static TABLE const MonthDayTable[] = { + { "january", tMONTH, 1 }, + { "february", tMONTH, 2 }, + { "march", tMONTH, 3 }, + { "april", tMONTH, 4 }, + { "may", tMONTH, 5 }, + { "june", tMONTH, 6 }, + { "july", tMONTH, 7 }, + { "august", tMONTH, 8 }, + { "september", tMONTH, 9 }, + { "sept", tMONTH, 9 }, + { "october", tMONTH, 10 }, + { "november", tMONTH, 11 }, + { "december", tMONTH, 12 }, + { "sunday", tDAY, 0 }, + { "monday", tDAY, 1 }, + { "tuesday", tDAY, 2 }, + { "tues", tDAY, 2 }, + { "wednesday", tDAY, 3 }, + { "wednes", tDAY, 3 }, + { "thursday", tDAY, 4 }, + { "thur", tDAY, 4 }, + { "thurs", tDAY, 4 }, + { "friday", tDAY, 5 }, + { "saturday", tDAY, 6 }, + { NULL, 0, 0 } +}; + +/* Time units table. */ +static TABLE const UnitsTable[] = { + { "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 OtherTable[] = { + { "tomorrow", tDAY_UNIT, 1 }, + { "yesterday", tDAY_UNIT, -1 }, + { "today", tDAY_UNIT, 0 }, + { "now", tDAY_UNIT, 0 }, + { "last", tUNUMBER, -1 }, + { "this", tUNUMBER, 0 }, + { "next", tUNUMBER, 1 }, + { "first", tUNUMBER, 1 }, +/* { "second", tUNUMBER, 2 }, */ + { "third", tUNUMBER, 3 }, + { "fourth", tUNUMBER, 4 }, + { "fifth", tUNUMBER, 5 }, + { "sixth", tUNUMBER, 6 }, + { "seventh", tUNUMBER, 7 }, + { "eighth", tUNUMBER, 8 }, + { "ninth", tUNUMBER, 9 }, + { "tenth", tUNUMBER, 10 }, + { "eleventh", tUNUMBER, 11 }, + { "twelfth", tUNUMBER, 12 }, + { "ago", tAGO, 1 }, + { NULL, 0, 0 } +}; + +/* The timezone table. */ +static TABLE const TimezoneTable[] = { + { "gmt", tZONE, HOUR ( 0) }, /* Greenwich Mean */ + { "ut", tZONE, HOUR ( 0) }, /* Universal (Coordinated) */ + { "utc", tZONE, HOUR ( 0) }, + { "wet", tZONE, HOUR ( 0) }, /* Western European */ + { "bst", tDAYZONE, HOUR ( 0) }, /* British Summer */ + { "wat", tZONE, HOUR ( 1) }, /* West Africa */ + { "at", tZONE, HOUR ( 2) }, /* Azores */ +#if 0 + /* For completeness. BST is also British Summer, and GST is + * also Guam Standard. */ + { "bst", tZONE, HOUR ( 3) }, /* Brazil Standard */ + { "gst", tZONE, HOUR ( 3) }, /* Greenland Standard */ +#endif +#if 0 + { "nft", tZONE, HOUR (3.5) }, /* Newfoundland */ + { "nst", tZONE, HOUR (3.5) }, /* Newfoundland Standard */ + { "ndt", tDAYZONE, HOUR (3.5) }, /* Newfoundland Daylight */ +#endif + { "ast", tZONE, HOUR ( 4) }, /* Atlantic Standard */ + { "adt", tDAYZONE, HOUR ( 4) }, /* Atlantic Daylight */ + { "est", tZONE, HOUR ( 5) }, /* Eastern Standard */ + { "edt", tDAYZONE, HOUR ( 5) }, /* Eastern Daylight */ + { "cst", tZONE, HOUR ( 6) }, /* Central Standard */ + { "cdt", tDAYZONE, HOUR ( 6) }, /* Central Daylight */ + { "mst", tZONE, HOUR ( 7) }, /* Mountain Standard */ + { "mdt", tDAYZONE, HOUR ( 7) }, /* Mountain Daylight */ + { "pst", tZONE, HOUR ( 8) }, /* Pacific Standard */ + { "pdt", tDAYZONE, HOUR ( 8) }, /* Pacific Daylight */ + { "yst", tZONE, HOUR ( 9) }, /* Yukon Standard */ + { "ydt", tDAYZONE, HOUR ( 9) }, /* Yukon Daylight */ + { "hst", tZONE, HOUR (10) }, /* Hawaii Standard */ + { "hdt", tDAYZONE, HOUR (10) }, /* Hawaii Daylight */ + { "cat", tZONE, HOUR (10) }, /* Central Alaska */ + { "akst", tZONE, HOUR (10) }, /* Alaska Standard */ + { "akdt", tZONE, HOUR (10) }, /* Alaska Daylight */ + { "ahst", tZONE, HOUR (10) }, /* Alaska-Hawaii Standard */ + { "nt", tZONE, HOUR (11) }, /* Nome */ + { "idlw", tZONE, HOUR (12) }, /* International Date Line West */ + { "cet", tZONE, -HOUR (1) }, /* Central European */ + { "cest", tDAYZONE, -HOUR (1) }, /* Central European Summer */ + { "met", tZONE, -HOUR (1) }, /* Middle European */ + { "mewt", tZONE, -HOUR (1) }, /* Middle European Winter */ + { "mest", tDAYZONE, -HOUR (1) }, /* Middle European Summer */ + { "mesz", tDAYZONE, -HOUR (1) }, /* Middle European Summer */ + { "swt", tZONE, -HOUR (1) }, /* Swedish Winter */ + { "sst", tDAYZONE, -HOUR (1) }, /* Swedish Summer */ + { "fwt", tZONE, -HOUR (1) }, /* French Winter */ + { "fst", tDAYZONE, -HOUR (1) }, /* French Summer */ + { "eet", tZONE, -HOUR (2) }, /* Eastern Europe, USSR Zone 1 */ + { "bt", tZONE, -HOUR (3) }, /* Baghdad, USSR Zone 2 */ +#if 0 + { "it", tZONE, -HOUR (3.5) },/* Iran */ +#endif + { "zp4", tZONE, -HOUR (4) }, /* USSR Zone 3 */ + { "zp5", tZONE, -HOUR (5) }, /* USSR Zone 4 */ +#if 0 + { "ist", tZONE, -HOUR (5.5) },/* Indian Standard */ +#endif + { "zp6", tZONE, -HOUR (6) }, /* USSR Zone 5 */ +#if 0 + /* For completeness. NST is also Newfoundland Standard, and SST is + * also Swedish Summer. */ + { "nst", tZONE, -HOUR (6.5) },/* North Sumatra */ + { "sst", tZONE, -HOUR (7) }, /* South Sumatra, USSR Zone 6 */ +#endif /* 0 */ + { "wast", tZONE, -HOUR (7) }, /* West Australian Standard */ + { "wadt", tDAYZONE, -HOUR (7) }, /* West Australian Daylight */ +#if 0 + { "jt", tZONE, -HOUR (7.5) },/* Java (3pm in Cronusland!) */ +#endif + { "cct", tZONE, -HOUR (8) }, /* China Coast, USSR Zone 7 */ + { "jst", tZONE, -HOUR (9) }, /* Japan Standard, USSR Zone 8 */ +#if 0 + { "cast", tZONE, -HOUR (9.5) },/* Central Australian Standard */ + { "cadt", tDAYZONE, -HOUR (9.5) },/* Central Australian Daylight */ +#endif + { "east", tZONE, -HOUR (10) }, /* Eastern Australian Standard */ + { "eadt", tDAYZONE, -HOUR (10) }, /* Eastern Australian Daylight */ + { "gst", tZONE, -HOUR (10) }, /* Guam Standard, USSR Zone 9 */ + { "nzt", tZONE, -HOUR (12) }, /* New Zealand */ + { "nzst", tZONE, -HOUR (12) }, /* New Zealand Standard */ + { "nzdt", tDAYZONE, -HOUR (12) }, /* New Zealand Daylight */ + { "idle", tZONE, -HOUR (12) }, /* International Date Line East */ + { NULL, 0, 0 } +}; + +/* Military timezone table. */ +static TABLE const MilitaryTable[] = { + { "a", tZONE, HOUR (- 1) }, + { "b", tZONE, HOUR (- 2) }, + { "c", tZONE, HOUR (- 3) }, + { "d", tZONE, HOUR (- 4) }, + { "e", tZONE, HOUR (- 5) }, + { "f", tZONE, HOUR (- 6) }, + { "g", tZONE, HOUR (- 7) }, + { "h", tZONE, HOUR (- 8) }, + { "i", tZONE, HOUR (- 9) }, + { "k", tZONE, HOUR (-10) }, + { "l", tZONE, HOUR (-11) }, + { "m", tZONE, HOUR (-12) }, + { "n", tZONE, HOUR ( 1) }, + { "o", tZONE, HOUR ( 2) }, + { "p", tZONE, HOUR ( 3) }, + { "q", tZONE, HOUR ( 4) }, + { "r", tZONE, HOUR ( 5) }, + { "s", tZONE, HOUR ( 6) }, + { "t", tTZONE, HOUR ( 7) }, + { "u", tZONE, HOUR ( 8) }, + { "v", tZONE, HOUR ( 9) }, + { "w", tWZONE, HOUR ( 10) }, + { "x", tZONE, HOUR ( 11) }, + { "y", tZONE, HOUR ( 12) }, + { "z", tZZONE, HOUR ( 0) }, + { NULL, 0, 0 } +}; + + + + +/* ARGSUSED */ +static int +yyerror(void* parm, const char *s) +{ + return 0; +} + +static int +ToHour(int Hours, MERIDIAN Meridian) +{ + switch (Meridian) + { + case MER24: + if(Hours < 0 || Hours > 23) + return -1; + return Hours; + case MERam: + if(Hours < 1 || Hours > 12) + return -1; + if(Hours == 12) + Hours = 0; + return Hours; + case MERpm: + if(Hours < 1 || Hours > 12) + return -1; + if(Hours == 12) + Hours = 0; + return Hours + 12; + default: +#ifdef RAPTOR_DEBUG + fprintf(stderr, "%s:%d:%s: UNKNOWN Meridian %d - add a new case", + __FILE__, __LINE__, __FUNCTION__, (int)Meridian); +#endif + return -1; + } + /* NOTREACHED */ +} + +static int +ToYear(int Year) +{ + if(Year < 0) + Year = -Year; + + /* XPG4 suggests that years 00-68 map to 2000-2068, and + years 69-99 map to 1969-1999. */ + if(Year < 69) + Year += 2000; + else if(Year < 100) + Year += 1900; + + return Year; +} + +static int +LookupWord (YYSTYPE *lvalp, char *buff) +{ + char *p; + char *q; + const TABLE *tp; + int i; + int abbrev; + + /* Make it lowercase. */ + for(p = buff; *p; p++) + if(isupper ((unsigned char) *p)) + *p = tolower (*p); + + if(strcmp (buff, "am") == 0 || strcmp (buff, "a.m.") == 0) + { + lvalp->Meridian = MERam; + return tMERIDIAN; + } + if(strcmp (buff, "pm") == 0 || strcmp (buff, "p.m.") == 0) + { + lvalp->Meridian = MERpm; + return tMERIDIAN; + } + + /* See if we have an abbreviation for a month. */ + if(strlen (buff) == 3) + abbrev = 1; + else if(strlen (buff) == 4 && buff[3] == '.') + { + abbrev = 1; + buff[3] = '\0'; + } + else + abbrev = 0; + + for(tp = MonthDayTable; tp->name; tp++) + { + if(abbrev) + { + if(strncmp (buff, tp->name, 3) == 0) + { + lvalp->Number = tp->value; + return tp->type; + } + } + else if(strcmp (buff, tp->name) == 0) + { + lvalp->Number = tp->value; + return tp->type; + } + } + + for(tp = TimezoneTable; tp->name; tp++) + if(strcmp (buff, tp->name) == 0) + { + lvalp->Number = tp->value; + return tp->type; + } + + if(strcmp (buff, "dst") == 0) + return tDST; + + for(tp = UnitsTable; tp->name; tp++) + if(strcmp (buff, tp->name) == 0) + { + lvalp->Number = tp->value; + return tp->type; + } + + /* Strip off any plural and try the units table again. */ + i = RAPTOR_BAD_CAST(int, strlen(buff)) - 1; + if(buff[i] == 's') + { + buff[i] = '\0'; + for(tp = UnitsTable; tp->name; tp++) + if(strcmp (buff, tp->name) == 0) + { + lvalp->Number = tp->value; + return tp->type; + } + buff[i] = 's'; /* Put back for "this" in OtherTable. */ + } + + for(tp = OtherTable; tp->name; tp++) + if(strcmp (buff, tp->name) == 0) + { + lvalp->Number = tp->value; + return tp->type; + } + + /* Military timezones. */ + if(buff[1] == '\0' && isalpha ((unsigned char) *buff)) + { + for(tp = MilitaryTable; tp->name; tp++) + if(strcmp (buff, tp->name) == 0) + { + lvalp->Number = tp->value; + return tp->type; + } + } + + /* Drop out any periods and try the timezone table again. */ + for(i = 0, p = q = buff; *q; q++) + if(*q != '.') + *p++ = *q; + else + i++; + *p = '\0'; + if(i) + for(tp = TimezoneTable; tp->name; tp++) + if(strcmp (buff, tp->name) == 0) + { + lvalp->Number = tp->value; + return tp->type; + } + + return tID; +} + +int yylex(YYSTYPE *lvalp, void *parm) +{ + unsigned char c; + char *p; + char buff[20]; + int Count; + int sign; + struct date_yy * date = (struct date_yy *)parm; + + for(;;) + { + while(isspace ((unsigned char) *date->yyInput)) + date->yyInput++; + + if(isdigit (c = *date->yyInput) || c == '-' || c == '+') + { + if(c == '-' || c == '+') + { + sign = c == '-' ? -1 : 1; + if(!ISDIGIT (*++date->yyInput)) + /* skip the '-' sign */ + continue; + } + else + sign = 0; + for(lvalp->Number = 0; ISDIGIT (c = *date->yyInput++);) + lvalp->Number = 10 * lvalp->Number + c - '0'; + date->yyInput--; + if(sign < 0) + lvalp->Number = -lvalp->Number; + /* Ignore ordinal suffixes on numbers */ + c = *date->yyInput; + if(c == 's' || c == 'n' || c == 'r' || c == 't') { + c = *++date->yyInput; + if(c == 't' || c == 'd' || c == 'h') { + date->yyInput++; + } else { + date->yyInput--; + } + } + return sign ? tSNUMBER : tUNUMBER; + } + if(isalpha (c)) + { + for(p = buff; (c = *date->yyInput++, isalpha (c)) || c == '.';) + if(p < &buff[sizeof buff - 1]) + *p++ = c; + *p = '\0'; + date->yyInput--; + return LookupWord (lvalp, buff); + } + if(c != '(') + return *date->yyInput++; + Count = 0; + do + { + c = *date->yyInput++; + if(c == '\0') + return c; + if(c == '(') + Count++; + else if(c == ')') + Count--; + } + while(Count > 0); + } +} + +#define TM_YEAR_ORIGIN 1900 + +/* Yield A - B, measured in seconds. */ +static long +difftm (struct tm *a, struct tm *b) +{ + int ay = a->tm_year + (TM_YEAR_ORIGIN - 1); + int by = b->tm_year + (TM_YEAR_ORIGIN - 1); + long days = ( + /* difference in day of year */ + a->tm_yday - b->tm_yday + /* + intervening leap days */ + + ((ay >> 2) - (by >> 2)) + - (ay / 100 - by / 100) + + ((ay / 100 >> 2) - (by / 100 >> 2)) + /* + difference in years * 365 */ + + (long) (ay - by) * 365 + ); + return (60 * (60 * (24 * days + (a->tm_hour - b->tm_hour)) + + (a->tm_min - b->tm_min)) + + (a->tm_sec - b->tm_sec)); +} + +time_t raptor_parse_date(const char *p, time_t *now) +{ + struct tm tm, tm0, *tmp; + time_t Start; + struct date_yy date; + + date.yyInput = p; + Start = now ? *now : time ((time_t *) NULL); + tmp = localtime (&Start); + if(!tmp) + return -1; + date.yyYear = tmp->tm_year + TM_YEAR_ORIGIN; + date.yyMonth = tmp->tm_mon + 1; + date.yyDay = tmp->tm_mday; + date.yyHour = tmp->tm_hour; + date.yyMinutes = tmp->tm_min; + date.yySeconds = tmp->tm_sec; + tm.tm_isdst = tmp->tm_isdst; + date.yyMeridian = MER24; + date.yyRelSeconds = 0; + date.yyRelMinutes = 0; + date.yyRelHour = 0; + date.yyRelDay = 0; + date.yyRelMonth = 0; + date.yyRelYear = 0; + date.yyHaveDate = 0; + date.yyHaveDay = 0; + date.yyHaveRel = 0; + date.yyHaveTime = 0; + date.yyHaveZone = 0; + + if(yyparse (&date) + || date.yyHaveTime > 1 || date.yyHaveZone > 1 + || date.yyHaveDate > 1 || date.yyHaveDay > 1) { + return -1; + } + tm.tm_year = ToYear (date.yyYear) - TM_YEAR_ORIGIN + date.yyRelYear; + tm.tm_mon = date.yyMonth - 1 + date.yyRelMonth; + tm.tm_mday = date.yyDay + date.yyRelDay; + if(date.yyHaveTime || (date.yyHaveRel && !date.yyHaveDate && !date.yyHaveDay)) + { + tm.tm_hour = ToHour (date.yyHour, date.yyMeridian); + if(tm.tm_hour < 0) + return -1; + tm.tm_min = date.yyMinutes; + tm.tm_sec = date.yySeconds; + } + else + { + tm.tm_hour = tm.tm_min = tm.tm_sec = 0; + } + tm.tm_hour += date.yyRelHour; + tm.tm_min += date.yyRelMinutes; + tm.tm_sec += date.yyRelSeconds; + + /* Let mktime deduce tm_isdst if we have an absolute timestamp, + or if the relative timestamp mentions days, months, or years. */ + if(date.yyHaveDate | date.yyHaveDay | date.yyHaveTime | date.yyRelDay | date.yyRelMonth | date.yyRelYear) + tm.tm_isdst = -1; + + tm0 = tm; + + Start = mktime (&tm); + + if(Start == (time_t) -1) + { + + /* Guard against falsely reporting errors near the time_t boundaries + when parsing times in other time zones. For example, if the min + time_t value is 1970-01-01 00:00:00 UTC and we are 8 hours ahead + of UTC, then the min localtime value is 1970-01-01 08:00:00; if + we apply mktime to 1970-01-01 00:00:00 we will get an error, so + we apply mktime to 1970-01-02 08:00:00 instead and adjust the time + zone by 24 hours to compensate. This algorithm assumes that + there is no DST transition within a day of the time_t boundaries. */ + if(date.yyHaveZone) + { + tm = tm0; + if(tm.tm_year <= EPOCH - TM_YEAR_ORIGIN) + { + tm.tm_mday++; + date.yyTimezone -= 24 * 60; + } + else + { + tm.tm_mday--; + date.yyTimezone += 24 * 60; + } + Start = mktime (&tm); + } + + if(Start == (time_t) -1) + return Start; + } + + if(date.yyHaveDay && !date.yyHaveDate) + { + tm.tm_mday += ((date.yyDayNumber - tm.tm_wday + 7) % 7 + + 7 * (date.yyDayOrdinal - (0 < date.yyDayOrdinal))); + Start = mktime (&tm); + if(Start == (time_t) -1) + return Start; + } + + if(date.yyHaveZone) + { + long delta; + struct tm *gmt = gmtime (&Start); + if(!gmt) + return -1; + delta = date.yyTimezone * 60L + difftm (&tm, gmt); + + if((Start + delta < Start) != (delta < 0)) + return -1; /* time_t overflow */ + Start += delta; + } + + return Start; +} |