From: Eric Blake Date: Thu, 30 Sep 2010 15:23:12 +0000 (-0600) Subject: getdate: rename to get_date X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9ff86bc1fbc6e5e31220cc1e04f1e07e03d4d5a4;p=pspp getdate: rename to get_date Note: getdate.h is not renamed, to minimize client impact. Besides, whenever we eventually add getdate-posix, we'll want to use getdate.m4 and getdate.c for the implementation, but don't need to worry about getdate.h since getdate() uses for its header. * modules/getdate: Mark obsolete. Move old contents... * modules/get_date: ...to new module name. * modules/getdate-tests: Move... * modules/get_date-tests: ...here. * m4/getdate.m4: Move... * m4/get_date.m4: ...here, and rename gl_GETDATE to gl_GET_DATE. * lib/getdate.y: Move... * lib/get_date.y: ...here. * tests/test-getdate.c: Move... * tests/test-get_date.c: ...here. * doc/posix-functions/getdate.texi (getdate): Update name. * NEWS: Mention the change. Signed-off-by: Eric Blake --- diff --git a/ChangeLog b/ChangeLog index 7fdc71315a..af7ba44d22 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,20 @@ +2010-09-30 Eric Blake + + getdate: rename to get_date + Note: getdate.h is not renamed, to minimize client impact. + * modules/getdate: Mark obsolete. Move old contents... + * modules/get_date: ...to new module name. + * modules/getdate-tests: Move... + * modules/get_date-tests: ...here. + * m4/getdate.m4: Move... + * m4/get_date.m4: ...here, and rename gl_GETDATE to gl_GET_DATE. + * lib/getdate.y: Move... + * lib/get_date.y: ...here. + * tests/test-getdate.c: Move... + * tests/test-get_date.c: ...here. + * doc/posix-functions/getdate.texi (getdate): Update name. + * NEWS: Mention the change. + 2010-09-29 Bruno Haible Separate the module 'waitpid' from the module 'sys_wait'. diff --git a/NEWS b/NEWS index 2f03ac1398..28ccdcddbe 100644 --- a/NEWS +++ b/NEWS @@ -12,6 +12,10 @@ User visible incompatible changes Date Modules Changes +2010-09-30 getdate This module is deprecated. Please use get_date + for get_date(), or help us write getdate-posix + for getdate(). + 2010-09-29 sys_wait This module no longer provides the waitpid() function. If you need this function, you now need to request the 'waitpid' module. diff --git a/doc/posix-functions/getdate.texi b/doc/posix-functions/getdate.texi index 6d454a0b47..156713aeb2 100644 --- a/doc/posix-functions/getdate.texi +++ b/doc/posix-functions/getdate.texi @@ -17,5 +17,6 @@ This function is missing on some platforms: MacOS X 10.3, FreeBSD 6.0, NetBSD 3.0, OpenBSD 3.8, Cygwin, mingw, BeOS. @end itemize -Gnulib provides a module @code{getdate} that contains a function @code{get_date} +Gnulib provides a module @code{get_date} that contains a function +@code{get_date} that has similar functionality as the @code{getdate} function. diff --git a/lib/get_date.y b/lib/get_date.y new file mode 100644 index 0000000000..445865bdb8 --- /dev/null +++ b/lib/get_date.y @@ -0,0 +1,1572 @@ +%{ +/* Parse a string into an internal time stamp. + + Copyright (C) 1999, 2000, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, + 2010 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 . */ + +/* Originally written by Steven M. Bellovin while + at the University of North Carolina at Chapel Hill. Later tweaked by + a couple of people on Usenet. Completely overhauled by Rich $alz + and Jim Berets in August, 1990. + + Modified by Paul Eggert in August 1999 to do + the right thing about local DST. Also modified by Paul Eggert + in February 2004 to support + nanosecond-resolution time stamps, and in October 2004 to support + TZ strings in dates. */ + +/* FIXME: Check for arithmetic overflow in all cases, not just + some of them. */ + +#include + +#include "getdate.h" + +#include "intprops.h" +#include "timespec.h" +#include "verify.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 getdate.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 +#include +#include +#include +#include + +#include "xalloc.h" + + +/* ISDIGIT differs from isdigit, as follows: + - Its arg may be any int or unsigned int; it need not be an unsigned char + or EOF. + - It's typically faster. + POSIX says that only '0' through '9' are digits. Prefer ISDIGIT to + isdigit unless it's important to use the locale's definition + of `digit' even when the host does not conform to POSIX. */ +#define ISDIGIT(c) ((unsigned int) (c) - '0' <= 9) + +/* 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 EPOCH_YEAR 1970 +#define TM_YEAR_BASE 1900 + +#define HOUR(x) ((x) * 60) + +/* long_time_t is a signed integer type that contains all time_t values. */ +verify (TYPE_IS_INTEGER (time_t)); +#if TIME_T_FITS_IN_LONG_INT +typedef long int long_time_t; +#else +typedef time_t long_time_t; +#endif + +/* Lots of this code assumes time_t and time_t-like values fit into + long_time_t. */ +verify (TYPE_MINIMUM (long_time_t) <= TYPE_MINIMUM (time_t) + && TYPE_MAXIMUM (time_t) <= TYPE_MAXIMUM (long_time_t)); + +/* FIXME: It also assumes that signed integer overflow silently wraps around, + but this is not true any more with recent versions of GCC 4. */ + +/* An integer value, and the number of digits in its textual + representation. */ +typedef struct +{ + bool negative; + long int value; + size_t digits; +} textint; + +/* An entry in the lexical lookup table. */ +typedef struct +{ + char const *name; + int type; + int value; +} table; + +/* Meridian: am, pm, or 24-hour style. */ +enum { MERam, MERpm, MER24 }; + +enum { BILLION = 1000000000, LOG10_BILLION = 9 }; + +/* Relative times. */ +typedef struct +{ + /* Relative year, month, day, hour, minutes, seconds, and nanoseconds. */ + long int year; + long int month; + long int day; + long int hour; + long int minutes; + long_time_t seconds; + long 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. */ + long int day_ordinal; + + /* Day of week; Sunday is 0. */ + int day_number; + + /* tm_isdst flag for the local zone. */ + int local_isdst; + + /* Time zone, in minutes east of UTC. */ + long int time_zone; + + /* Style used for time. */ + int meridian; + + /* Gregorian year, month, day, hour, minutes, seconds, and nanoseconds. */ + textint year; + long int month; + long int day; + long int hour; + long int 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; + size_t dates_seen; + size_t days_seen; + size_t local_zones_seen; + size_t dsts_seen; + size_t times_seen; + size_t zones_seen; + + /* Table of local time zone abbrevations, 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 long int time_zone_hhmm (parser_control *, textint, long int); + +/* Extract into *PC any date and time info from a string of digits + of the form e.g., YYYYMMDD, YYMMDD, HHMM, HH (and sometimes YYY, + YYYY, ...). */ +static void +digits_to_date_time (parser_control *pc, textint text_int) +{ + if (pc->dates_seen && ! pc->year.digits + && ! pc->rels_seen && (pc->times_seen || 2 < text_int.digits)) + pc->year = text_int; + else + { + if (4 < text_int.digits) + { + pc->dates_seen++; + pc->day = text_int.value % 100; + pc->month = (text_int.value / 100) % 100; + pc->year.value = text_int.value / 10000; + pc->year.digits = text_int.digits - 4; + } + else + { + pc->times_seen++; + if (text_int.digits <= 2) + { + pc->hour = text_int.value; + pc->minutes = 0; + } + else + { + pc->hour = text_int.value / 100; + pc->minutes = text_int.value % 100; + } + pc->seconds.tv_sec = 0; + pc->seconds.tv_nsec = 0; + pc->meridian = MER24; + } + } +} + +/* Increment PC->rel by FACTOR * REL (FACTOR is 1 or -1). */ +static void +apply_relative_time (parser_control *pc, relative_time rel, int factor) +{ + pc->rel.ns += factor * rel.ns; + pc->rel.seconds += factor * rel.seconds; + pc->rel.minutes += factor * rel.minutes; + pc->rel.hour += factor * rel.hour; + pc->rel.day += factor * rel.day; + pc->rel.month += factor * rel.month; + pc->rel.year += factor * rel.year; + pc->rels_seen = true; +} + +/* Set PC-> hour, minutes, seconds and nanoseconds members from arguments. */ +static void +set_hhmmss (parser_control *pc, long int hour, long int minutes, + time_t sec, long int nsec) +{ + pc->hour = hour; + pc->minutes = minutes; + pc->seconds.tv_sec = sec; + pc->seconds.tv_nsec = nsec; +} + +%} + +/* We want a reentrant parser, even if the TZ manipulation and the calls to + localtime and gmtime are not reentrant. */ +%pure-parser +%parse-param { parser_control *pc } +%lex-param { parser_control *pc } + +/* This grammar has 20 shift/reduce conflicts. */ +%expect 20 + +%union +{ + long int intval; + textint textintval; + struct timespec timespec; + relative_time rel; +} + +%token tAGO tDST + +%token tYEAR_UNIT tMONTH_UNIT tHOUR_UNIT tMINUTE_UNIT tSEC_UNIT +%token tDAY_UNIT tDAY_SHIFT + +%token tDAY tDAYZONE tLOCAL_ZONE tMERIDIAN +%token tMONTH tORDINAL tZONE + +%token tSNUMBER tUNUMBER +%token tSDECIMAL_NUMBER tUDECIMAL_NUMBER + +%type o_colon_minutes o_merid +%type seconds signed_seconds unsigned_seconds + +%type relunit relunit_snumber dayshift + +%% + +spec: + timespec + | items + ; + +timespec: + '@' seconds + { + pc->seconds = $2; + pc->timespec_seen = true; + } + ; + +items: + /* empty */ + | items item + ; + +item: + time + { pc->times_seen++; } + | local_zone + { pc->local_zones_seen++; } + | zone + { pc->zones_seen++; } + | date + { pc->dates_seen++; } + | day + { pc->days_seen++; } + | rel + | number + | hybrid + ; + +time: + tUNUMBER tMERIDIAN + { + set_hhmmss (pc, $1.value, 0, 0, 0); + pc->meridian = $2; + } + | tUNUMBER ':' tUNUMBER o_merid + { + set_hhmmss (pc, $1.value, $3.value, 0, 0); + pc->meridian = $4; + } + | tUNUMBER ':' tUNUMBER tSNUMBER o_colon_minutes + { + set_hhmmss (pc, $1.value, $3.value, 0, 0); + pc->meridian = MER24; + pc->zones_seen++; + pc->time_zone = time_zone_hhmm (pc, $4, $5); + } + | tUNUMBER ':' tUNUMBER ':' unsigned_seconds o_merid + { + set_hhmmss (pc, $1.value, $3.value, $5.tv_sec, $5.tv_nsec); + pc->meridian = $6; + } + | tUNUMBER ':' tUNUMBER ':' unsigned_seconds tSNUMBER o_colon_minutes + { + set_hhmmss (pc, $1.value, $3.value, $5.tv_sec, $5.tv_nsec); + pc->meridian = MER24; + pc->zones_seen++; + pc->time_zone = time_zone_hhmm (pc, $6, $7); + } + ; + +local_zone: + tLOCAL_ZONE + { + pc->local_isdst = $1; + pc->dsts_seen += (0 < $1); + } + | tLOCAL_ZONE tDST + { + pc->local_isdst = 1; + pc->dsts_seen += (0 < $1) + 1; + } + ; + +zone: + tZONE + { pc->time_zone = $1; } + | tZONE relunit_snumber + { pc->time_zone = $1; + apply_relative_time (pc, $2, 1); } + | tZONE tSNUMBER o_colon_minutes + { pc->time_zone = $1 + time_zone_hhmm (pc, $2, $3); } + | tDAYZONE + { pc->time_zone = $1 + 60; } + | tZONE tDST + { pc->time_zone = $1 + 60; } + ; + +day: + tDAY + { + pc->day_ordinal = 0; + pc->day_number = $1; + } + | tDAY ',' + { + pc->day_ordinal = 0; + pc->day_number = $1; + } + | tORDINAL tDAY + { + pc->day_ordinal = $1; + pc->day_number = $2; + } + | tUNUMBER tDAY + { + pc->day_ordinal = $1.value; + pc->day_number = $2; + } + ; + +date: + tUNUMBER '/' tUNUMBER + { + pc->month = $1.value; + pc->day = $3.value; + } + | tUNUMBER '/' tUNUMBER '/' tUNUMBER + { + /* 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 <= $1.digits) + { + pc->year = $1; + pc->month = $3.value; + pc->day = $5.value; + } + else + { + pc->month = $1.value; + pc->day = $3.value; + pc->year = $5; + } + } + | tUNUMBER tSNUMBER tSNUMBER + { + /* ISO 8601 format. YYYY-MM-DD. */ + pc->year = $1; + pc->month = -$2.value; + pc->day = -$3.value; + } + | tUNUMBER tMONTH tSNUMBER + { + /* e.g. 17-JUN-1992. */ + pc->day = $1.value; + pc->month = $2; + pc->year.value = -$3.value; + pc->year.digits = $3.digits; + } + | tMONTH tSNUMBER tSNUMBER + { + /* e.g. JUN-17-1992. */ + pc->month = $1; + pc->day = -$2.value; + pc->year.value = -$3.value; + pc->year.digits = $3.digits; + } + | tMONTH tUNUMBER + { + pc->month = $1; + pc->day = $2.value; + } + | tMONTH tUNUMBER ',' tUNUMBER + { + pc->month = $1; + pc->day = $2.value; + pc->year = $4; + } + | tUNUMBER tMONTH + { + pc->day = $1.value; + pc->month = $2; + } + | tUNUMBER tMONTH tUNUMBER + { + pc->day = $1.value; + pc->month = $2; + pc->year = $3; + } + ; + +rel: + relunit tAGO + { apply_relative_time (pc, $1, -1); } + | relunit + { apply_relative_time (pc, $1, 1); } + | dayshift + { apply_relative_time (pc, $1, 1); } + ; + +relunit: + tORDINAL tYEAR_UNIT + { $$ = RELATIVE_TIME_0; $$.year = $1; } + | tUNUMBER tYEAR_UNIT + { $$ = RELATIVE_TIME_0; $$.year = $1.value; } + | tYEAR_UNIT + { $$ = RELATIVE_TIME_0; $$.year = 1; } + | tORDINAL tMONTH_UNIT + { $$ = RELATIVE_TIME_0; $$.month = $1; } + | tUNUMBER tMONTH_UNIT + { $$ = RELATIVE_TIME_0; $$.month = $1.value; } + | tMONTH_UNIT + { $$ = RELATIVE_TIME_0; $$.month = 1; } + | tORDINAL tDAY_UNIT + { $$ = RELATIVE_TIME_0; $$.day = $1 * $2; } + | tUNUMBER tDAY_UNIT + { $$ = RELATIVE_TIME_0; $$.day = $1.value * $2; } + | tDAY_UNIT + { $$ = RELATIVE_TIME_0; $$.day = $1; } + | tORDINAL tHOUR_UNIT + { $$ = RELATIVE_TIME_0; $$.hour = $1; } + | tUNUMBER tHOUR_UNIT + { $$ = RELATIVE_TIME_0; $$.hour = $1.value; } + | tHOUR_UNIT + { $$ = RELATIVE_TIME_0; $$.hour = 1; } + | tORDINAL tMINUTE_UNIT + { $$ = RELATIVE_TIME_0; $$.minutes = $1; } + | tUNUMBER tMINUTE_UNIT + { $$ = RELATIVE_TIME_0; $$.minutes = $1.value; } + | tMINUTE_UNIT + { $$ = RELATIVE_TIME_0; $$.minutes = 1; } + | tORDINAL tSEC_UNIT + { $$ = RELATIVE_TIME_0; $$.seconds = $1; } + | tUNUMBER tSEC_UNIT + { $$ = RELATIVE_TIME_0; $$.seconds = $1.value; } + | tSDECIMAL_NUMBER tSEC_UNIT + { $$ = RELATIVE_TIME_0; $$.seconds = $1.tv_sec; $$.ns = $1.tv_nsec; } + | tUDECIMAL_NUMBER tSEC_UNIT + { $$ = RELATIVE_TIME_0; $$.seconds = $1.tv_sec; $$.ns = $1.tv_nsec; } + | tSEC_UNIT + { $$ = RELATIVE_TIME_0; $$.seconds = 1; } + | relunit_snumber + ; + +relunit_snumber: + tSNUMBER tYEAR_UNIT + { $$ = RELATIVE_TIME_0; $$.year = $1.value; } + | tSNUMBER tMONTH_UNIT + { $$ = RELATIVE_TIME_0; $$.month = $1.value; } + | tSNUMBER tDAY_UNIT + { $$ = RELATIVE_TIME_0; $$.day = $1.value * $2; } + | tSNUMBER tHOUR_UNIT + { $$ = RELATIVE_TIME_0; $$.hour = $1.value; } + | tSNUMBER tMINUTE_UNIT + { $$ = RELATIVE_TIME_0; $$.minutes = $1.value; } + | tSNUMBER tSEC_UNIT + { $$ = RELATIVE_TIME_0; $$.seconds = $1.value; } + ; + +dayshift: + tDAY_SHIFT + { $$ = RELATIVE_TIME_0; $$.day = $1; } + ; + +seconds: signed_seconds | unsigned_seconds; + +signed_seconds: + tSDECIMAL_NUMBER + | tSNUMBER + { $$.tv_sec = $1.value; $$.tv_nsec = 0; } + ; + +unsigned_seconds: + tUDECIMAL_NUMBER + | tUNUMBER + { $$.tv_sec = $1.value; $$.tv_nsec = 0; } + ; + +number: + tUNUMBER + { digits_to_date_time (pc, $1); } + ; + +hybrid: + tUNUMBER relunit_snumber + { + /* 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, $1); + apply_relative_time (pc, $2, 1); + } + ; + +o_colon_minutes: + /* empty */ + { $$ = -1; } + | ':' tUNUMBER + { $$ = $2.value; } + ; + +o_merid: + /* empty */ + { $$ = MER24; } + | tMERIDIAN + { $$ = $1; } + ; + +%% + +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 }, + { NULL, 0, 0 } +}; + +/* The universal time zone table. These labels can be used even for + time stamps that would not otherwise be valid, e.g., GMT time + stamps in London during summer. */ +static table const universal_time_zone_table[] = +{ + { "GMT", tZONE, HOUR ( 0) }, /* Greenwich Mean */ + { "UT", tZONE, HOUR ( 0) }, /* Universal (Coordinated) */ + { "UTC", tZONE, HOUR ( 0) }, + { NULL, 0, 0 } +}; + +/* The time zone table. This table is necessarily incomplete, as time + zone abbreviations are ambiguous; e.g. Australians interpret "EST" + as Eastern time in Australia, not as US Eastern Standard Time. + You cannot rely on getdate to handle arbitrary time zone + abbreviations; use numeric abbreviations like `-0500' instead. */ +static table const time_zone_table[] = +{ + { "WET", tZONE, HOUR ( 0) }, /* Western European */ + { "WEST", tDAYZONE, HOUR ( 0) }, /* Western European Summer */ + { "BST", tDAYZONE, HOUR ( 0) }, /* British Summer */ + { "ART", tZONE, -HOUR ( 3) }, /* Argentina */ + { "BRT", tZONE, -HOUR ( 3) }, /* Brazil */ + { "BRST", tDAYZONE, -HOUR ( 3) }, /* Brazil Summer */ + { "NST", tZONE, -(HOUR ( 3) + 30) }, /* Newfoundland Standard */ + { "NDT", tDAYZONE,-(HOUR ( 3) + 30) }, /* Newfoundland Daylight */ + { "AST", tZONE, -HOUR ( 4) }, /* Atlantic Standard */ + { "ADT", tDAYZONE, -HOUR ( 4) }, /* Atlantic Daylight */ + { "CLT", tZONE, -HOUR ( 4) }, /* Chile */ + { "CLST", tDAYZONE, -HOUR ( 4) }, /* Chile Summer */ + { "EST", tZONE, -HOUR ( 5) }, /* Eastern Standard */ + { "EDT", tDAYZONE, -HOUR ( 5) }, /* Eastern Daylight */ + { "CST", tZONE, -HOUR ( 6) }, /* Central Standard */ + { "CDT", tDAYZONE, -HOUR ( 6) }, /* Central Daylight */ + { "MST", tZONE, -HOUR ( 7) }, /* Mountain Standard */ + { "MDT", tDAYZONE, -HOUR ( 7) }, /* Mountain Daylight */ + { "PST", tZONE, -HOUR ( 8) }, /* Pacific Standard */ + { "PDT", tDAYZONE, -HOUR ( 8) }, /* Pacific Daylight */ + { "AKST", tZONE, -HOUR ( 9) }, /* Alaska Standard */ + { "AKDT", tDAYZONE, -HOUR ( 9) }, /* Alaska Daylight */ + { "HST", tZONE, -HOUR (10) }, /* Hawaii Standard */ + { "HAST", tZONE, -HOUR (10) }, /* Hawaii-Aleutian Standard */ + { "HADT", tDAYZONE, -HOUR (10) }, /* Hawaii-Aleutian Daylight */ + { "SST", tZONE, -HOUR (12) }, /* Samoa Standard */ + { "WAT", tZONE, HOUR ( 1) }, /* West Africa */ + { "CET", tZONE, HOUR ( 1) }, /* Central European */ + { "CEST", tDAYZONE, HOUR ( 1) }, /* Central European Summer */ + { "MET", tZONE, HOUR ( 1) }, /* Middle European */ + { "MEZ", tZONE, HOUR ( 1) }, /* Middle European */ + { "MEST", tDAYZONE, HOUR ( 1) }, /* Middle European Summer */ + { "MESZ", tDAYZONE, HOUR ( 1) }, /* Middle European Summer */ + { "EET", tZONE, HOUR ( 2) }, /* Eastern European */ + { "EEST", tDAYZONE, HOUR ( 2) }, /* Eastern European Summer */ + { "CAT", tZONE, HOUR ( 2) }, /* Central Africa */ + { "SAST", tZONE, HOUR ( 2) }, /* South Africa Standard */ + { "EAT", tZONE, HOUR ( 3) }, /* East Africa */ + { "MSK", tZONE, HOUR ( 3) }, /* Moscow */ + { "MSD", tDAYZONE, HOUR ( 3) }, /* Moscow Daylight */ + { "IST", tZONE, (HOUR ( 5) + 30) }, /* India Standard */ + { "SGT", tZONE, HOUR ( 8) }, /* Singapore */ + { "KST", tZONE, HOUR ( 9) }, /* Korea Standard */ + { "JST", tZONE, HOUR ( 9) }, /* Japan Standard */ + { "GST", tZONE, HOUR (10) }, /* Guam Standard */ + { "NZST", tZONE, HOUR (12) }, /* New Zealand Standard */ + { "NZDT", tDAYZONE, HOUR (12) }, /* New Zealand Daylight */ + { NULL, 0, 0 } +}; + +/* Military time zone table. */ +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", tZONE, HOUR ( 7) }, + { "U", tZONE, HOUR ( 8) }, + { "V", tZONE, HOUR ( 9) }, + { "W", tZONE, HOUR (10) }, + { "X", tZONE, HOUR (11) }, + { "Y", tZONE, HOUR (12) }, + { "Z", tZONE, HOUR ( 0) }, + { NULL, 0, 0 } +}; + + + +/* Convert a time zone expressed as HH:MM into an integer count of + minutes. 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 + http://www.opengroup.org/susv3xbd/xbd_chap08.html#tag_08_03, allow + only valid TZ range, and consider first two digits as hours, if no + minutes specified. */ + +static long int +time_zone_hhmm (parser_control *pc, textint s, long int mm) +{ + long int n_minutes; + + /* 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 + n_minutes = s.value * 60 + (s.negative ? -mm : mm); + + /* If the absolute number of minutes is larger than 24 hours, + arrange to reject it by incrementing pc->zones_seen. Thus, + we allow only values in the range UTC-24:00 to UTC+24:00. */ + if (24 * 60 < abs (n_minutes)) + pc->zones_seen++; + + return n_minutes; +} + +static int +to_hour (long int hours, int meridian) +{ + switch (meridian) + { + default: /* Pacify GCC. */ + case MER24: + return 0 <= hours && hours < 24 ? hours : -1; + case MERam: + return 0 < hours && hours < 12 ? hours : hours == 12 ? 0 : -1; + case MERpm: + return 0 < hours && hours < 12 ? hours + 12 : hours == 12 ? 12 : -1; + } +} + +static long int +to_year (textint textyear) +{ + long int year = textyear.value; + + if (year < 0) + year = -year; + + /* XPG4 suggests that years 00-68 map to 2000-2068, and + years 69-99 map to 1969-1999. */ + else if (textyear.digits == 2) + year += year < 69 ? 2000 : 1900; + + return year; +} + +static table const * +lookup_zone (parser_control const *pc, char const *name) +{ + table const *tp; + + for (tp = universal_time_zone_table; tp->name; tp++) + if (strcmp (name, tp->name) == 0) + return tp; + + /* Try local zone abbreviations before those in time_zone_table, as + the local ones are more likely to be right. */ + for (tp = pc->local_time_zone_table; tp->name; tp++) + if (strcmp (name, tp->name) == 0) + return tp; + + for (tp = time_zone_table; tp->name; tp++) + if (strcmp (name, tp->name) == 0) + return tp; + + return NULL; +} + +#if ! HAVE_TM_GMTOFF +/* Yield the difference between *A and *B, + measured in seconds, ignoring leap seconds. + The body of this function is taken directly from the GNU C Library; + see src/strftime.c. */ +static long int +tm_diff (struct tm const *a, struct tm const *b) +{ + /* Compute intervening leap days correctly even if year is negative. + Take care to avoid int overflow in leap day calculations. */ + int a4 = SHR (a->tm_year, 2) + SHR (TM_YEAR_BASE, 2) - ! (a->tm_year & 3); + int b4 = SHR (b->tm_year, 2) + SHR (TM_YEAR_BASE, 2) - ! (b->tm_year & 3); + int a100 = a4 / 25 - (a4 % 25 < 0); + int b100 = b4 / 25 - (b4 % 25 < 0); + int a400 = SHR (a100, 2); + int b400 = SHR (b100, 2); + int intervening_leap_days = (a4 - b4) - (a100 - b100) + (a400 - b400); + long int ayear = a->tm_year; + long int years = ayear - b->tm_year; + long int days = (365 * years + intervening_leap_days + + (a->tm_yday - b->tm_yday)); + return (60 * (60 * (24 * days + (a->tm_hour - b->tm_hour)) + + (a->tm_min - b->tm_min)) + + (a->tm_sec - b->tm_sec)); +} +#endif /* ! HAVE_TM_GMTOFF */ + +static table const * +lookup_word (parser_control const *pc, char *word) +{ + char *p; + char *q; + size_t wordlen; + table const *tp; + bool period_found; + bool abbrev; + + /* Make it uppercase. */ + for (p = word; *p; p++) + { + unsigned char ch = *p; + *p = c_toupper (ch); + } + + 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 (YYSTYPE *lvalp, parser_control *pc) +{ + unsigned char c; + size_t count; + + for (;;) + { + while (c = *pc->input, c_isspace (c)) + pc->input++; + + if (ISDIGIT (c) || c == '-' || c == '+') + { + char const *p; + int sign; + unsigned long int value; + if (c == '-' || c == '+') + { + sign = c == '-' ? -1 : 1; + while (c = *++pc->input, c_isspace (c)) + continue; + if (! ISDIGIT (c)) + /* skip the '-' sign */ + continue; + } + else + sign = 0; + p = pc->input; + for (value = 0; ; value *= 10) + { + unsigned long int value1 = value + (c - '0'); + if (value1 < value) + return '?'; + value = value1; + c = *++p; + if (! ISDIGIT (c)) + break; + if (ULONG_MAX / 10 < value) + return '?'; + } + if ((c == '.' || c == ',') && ISDIGIT (p[1])) + { + time_t s; + int ns; + int digits; + unsigned long int value1; + + /* Check for overflow when converting value to time_t. */ + if (sign < 0) + { + s = - value; + if (0 < s) + return '?'; + value1 = -s; + } + else + { + s = value; + if (s < 0) + return '?'; + value1 = s; + } + if (value != value1) + return '?'; + + /* Accumulate fraction, to ns precision. */ + p++; + ns = *p++ - '0'; + for (digits = 2; digits <= LOG10_BILLION; digits++) + { + ns *= 10; + if (ISDIGIT (*p)) + ns += *p++ - '0'; + } + + /* Skip excess digits, truncating toward -Infinity. */ + if (sign < 0) + for (; ISDIGIT (*p); p++) + if (*p != '0') + { + ns++; + break; + } + while (ISDIGIT (*p)) + p++; + + /* Adjust to the timespec convention, which is that + tv_nsec is always a positive offset even if tv_sec is + negative. */ + if (sign < 0 && ns) + { + s--; + if (! (s < 0)) + return '?'; + ns = BILLION - ns; + } + + lvalp->timespec.tv_sec = s; + lvalp->timespec.tv_nsec = ns; + pc->input = p; + return sign ? tSDECIMAL_NUMBER : tUDECIMAL_NUMBER; + } + else + { + lvalp->textintval.negative = sign < 0; + if (sign < 0) + { + lvalp->textintval.value = - value; + if (0 < lvalp->textintval.value) + return '?'; + } + else + { + lvalp->textintval.value = value; + if (lvalp->textintval.value < 0) + return '?'; + } + lvalp->textintval.digits = p - pc->input; + pc->input = p; + return sign ? tSNUMBER : tUNUMBER; + } + } + + if (c_isalpha (c)) + { + char buff[20]; + char *p = buff; + table const *tp; + + do + { + if (p < buff + sizeof buff - 1) + *p++ = c; + c = *++pc->input; + } + while (c_isalpha (c) || c == '.'); + + *p = '\0'; + tp = lookup_word (pc, buff); + if (! tp) + return '?'; + lvalp->intval = tp->value; + return tp->type; + } + + if (c != '(') + return *pc->input++; + count = 0; + do + { + c = *pc->input++; + if (c == '\0') + return c; + if (c == '(') + count++; + else if (c == ')') + count--; + } + while (count != 0); + } +} + +/* Do nothing if the parser reports an error. */ +static int +yyerror (parser_control const *pc _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, return true if it's OK that mktime returned T. + It's not OK if *TM0 has out-of-range members. */ + +static bool +mktime_ok (struct tm const *tm0, struct tm const *tm1, time_t t) +{ + if (t == (time_t) -1) + { + /* Guard against falsely reporting an error when parsing a time + stamp that happens to equal (time_t) -1, on a host that + supports such a time stamp. */ + tm1 = localtime (&t); + if (!tm1) + 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)); +} + +/* A reasonable upper bound for the size of ordinary TZ strings. + Use heap allocation if TZ's length exceeds this. */ +enum { TZBUFSIZE = 100 }; + +/* Return a copy of TZ, stored in TZBUF if it fits, and heap-allocated + otherwise. */ +static char * +get_tz (char tzbuf[TZBUFSIZE]) +{ + char *tz = getenv ("TZ"); + if (tz) + { + size_t tzsize = strlen (tz) + 1; + tz = (tzsize <= TZBUFSIZE + ? memcpy (tzbuf, tz, tzsize) + : xmemdup (tz, tzsize)); + } + return tz; +} + +/* 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. */ +bool +get_date (struct timespec *result, char const *p, struct timespec const *now) +{ + time_t Start; + long int Start_ns; + struct tm const *tmp; + struct tm tm; + struct tm tm0; + parser_control pc; + struct timespec gettime_buffer; + unsigned char c; + bool tz_was_altered = false; + char *tz0 = NULL; + char tz0buf[TZBUFSIZE]; + bool ok = true; + + if (! now) + { + gettime (&gettime_buffer); + now = &gettime_buffer; + } + + Start = now->tv_sec; + Start_ns = now->tv_nsec; + + tmp = localtime (&now->tv_sec); + if (! tmp) + return false; + + while (c = *p, c_isspace (c)) + p++; + + if (strncmp (p, "TZ=\"", 4) == 0) + { + char const *tzbase = p + 4; + size_t tzsize = 1; + char const *s; + + for (s = tzbase; *s; s++, tzsize++) + if (*s == '\\') + { + s++; + if (! (*s == '\\' || *s == '"')) + break; + } + else if (*s == '"') + { + char *z; + char *tz1; + char tz1buf[TZBUFSIZE]; + bool large_tz = TZBUFSIZE < tzsize; + bool setenv_ok; + /* Free tz0, in case this is the 2nd or subsequent time through. */ + free (tz0); + tz0 = get_tz (tz0buf); + z = tz1 = large_tz ? xmalloc (tzsize) : tz1buf; + for (s = tzbase; *s != '"'; s++) + *z++ = *(s += *s == '\\'); + *z = '\0'; + setenv_ok = setenv ("TZ", tz1, 1) == 0; + if (large_tz) + free (tz1); + if (!setenv_ok) + goto fail; + tz_was_altered = true; + p = s + 1; + } + } + + /* As documented, be careful to treat the empty string just like + a date string of "0". Without this, an empty string would be + declared invalid when parsed during a DST transition. */ + if (*p == '\0') + p = "0"; + + pc.input = p; + pc.year.value = tmp->tm_year; + pc.year.value += TM_YEAR_BASE; + pc.year.digits = 0; + pc.month = tmp->tm_mon + 1; + pc.day = tmp->tm_mday; + pc.hour = tmp->tm_hour; + pc.minutes = tmp->tm_min; + pc.seconds.tv_sec = tmp->tm_sec; + pc.seconds.tv_nsec = Start_ns; + tm.tm_isdst = tmp->tm_isdst; + + pc.meridian = MER24; + pc.rel = RELATIVE_TIME_0; + pc.timespec_seen = 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; + +#if HAVE_STRUCT_TM_TM_ZONE + pc.local_time_zone_table[0].name = tmp->tm_zone; + pc.local_time_zone_table[0].type = tLOCAL_ZONE; + pc.local_time_zone_table[0].value = tmp->tm_isdst; + pc.local_time_zone_table[1].name = NULL; + + /* Probe the names used in the next three calendar quarters, looking + for a tm_isdst different from the one we already have. */ + { + int quarter; + for (quarter = 1; quarter <= 3; quarter++) + { + time_t probe = Start + quarter * (90 * 24 * 60 * 60); + struct tm const *probe_tm = localtime (&probe); + if (probe_tm && probe_tm->tm_zone + && probe_tm->tm_isdst != pc.local_time_zone_table[0].value) + { + { + pc.local_time_zone_table[1].name = probe_tm->tm_zone; + pc.local_time_zone_table[1].type = tLOCAL_ZONE; + pc.local_time_zone_table[1].value = probe_tm->tm_isdst; + pc.local_time_zone_table[2].name = NULL; + } + break; + } + } + } +#else +#if HAVE_TZNAME + { +# if !HAVE_DECL_TZNAME + extern char *tzname[]; +# endif + int i; + for (i = 0; i < 2; i++) + { + pc.local_time_zone_table[i].name = tzname[i]; + pc.local_time_zone_table[i].type = tLOCAL_ZONE; + pc.local_time_zone_table[i].value = i; + } + pc.local_time_zone_table[i].name = NULL; + } +#else + pc.local_time_zone_table[0].name = NULL; +#endif +#endif + + if (pc.local_time_zone_table[0].name && pc.local_time_zone_table[1].name + && ! strcmp (pc.local_time_zone_table[0].name, + pc.local_time_zone_table[1].name)) + { + /* This locale uses the same abbrevation for standard and + daylight times. So if we see that abbreviation, we don't + know whether it's daylight time. */ + pc.local_time_zone_table[0].value = -1; + pc.local_time_zone_table[1].name = NULL; + } + + if (yyparse (&pc) != 0) + goto fail; + + if (pc.timespec_seen) + *result = pc.seconds; + else + { + if (1 < (pc.times_seen | pc.dates_seen | pc.days_seen | pc.dsts_seen + | (pc.local_zones_seen + pc.zones_seen))) + goto fail; + + tm.tm_year = to_year (pc.year) - TM_YEAR_BASE; + tm.tm_mon = pc.month - 1; + tm.tm_mday = pc.day; + if (pc.times_seen || (pc.rels_seen && ! pc.dates_seen && ! pc.days_seen)) + { + tm.tm_hour = to_hour (pc.hour, pc.meridian); + if (tm.tm_hour < 0) + goto fail; + tm.tm_min = pc.minutes; + tm.tm_sec = pc.seconds.tv_sec; + } + else + { + tm.tm_hour = tm.tm_min = tm.tm_sec = 0; + pc.seconds.tv_nsec = 0; + } + + /* Let mktime deduce tm_isdst if we have an absolute time stamp. */ + if (pc.dates_seen | pc.days_seen | pc.times_seen) + tm.tm_isdst = -1; + + /* But if the input explicitly specifies local time with or without + DST, give mktime that information. */ + if (pc.local_zones_seen) + tm.tm_isdst = pc.local_isdst; + + tm0 = tm; + + Start = mktime (&tm); + + if (! mktime_ok (&tm0, &tm, Start)) + { + if (! pc.zones_seen) + goto fail; + else + { + /* Guard against falsely reporting errors near the time_t + boundaries when parsing times in other time zones. For + example, suppose the input string "1969-12-31 23:00:00 -0100", + the current time zone is 8 hours ahead of UTC, and the min + time_t value is 1970-01-01 00:00:00 UTC. Then the min + localtime value is 1970-01-01 08:00:00, and mktime will + therefore fail on 1969-12-31 23:00:00. To work around the + problem, set the time zone to 1 hour behind UTC temporarily + by setting TZ="XXX1:00" and try mktime again. */ + + long int time_zone = pc.time_zone; + long int abs_time_zone = time_zone < 0 ? - time_zone : time_zone; + long int abs_time_zone_hour = abs_time_zone / 60; + int abs_time_zone_min = abs_time_zone % 60; + char tz1buf[sizeof "XXX+0:00" + + sizeof pc.time_zone * CHAR_BIT / 3]; + if (!tz_was_altered) + tz0 = get_tz (tz0buf); + sprintf (tz1buf, "XXX%s%ld:%02d", "-" + (time_zone < 0), + abs_time_zone_hour, abs_time_zone_min); + if (setenv ("TZ", tz1buf, 1) != 0) + goto fail; + tz_was_altered = true; + tm = tm0; + Start = mktime (&tm); + if (! mktime_ok (&tm0, &tm, Start)) + goto fail; + } + } + + if (pc.days_seen && ! pc.dates_seen) + { + tm.tm_mday += ((pc.day_number - tm.tm_wday + 7) % 7 + + 7 * (pc.day_ordinal + - (0 < pc.day_ordinal + && tm.tm_wday != pc.day_number))); + tm.tm_isdst = -1; + Start = mktime (&tm); + if (Start == (time_t) -1) + goto fail; + } + + /* Add relative date. */ + if (pc.rel.year | pc.rel.month | pc.rel.day) + { + int year = tm.tm_year + pc.rel.year; + int month = tm.tm_mon + pc.rel.month; + int day = tm.tm_mday + pc.rel.day; + if (((year < tm.tm_year) ^ (pc.rel.year < 0)) + | ((month < tm.tm_mon) ^ (pc.rel.month < 0)) + | ((day < tm.tm_mday) ^ (pc.rel.day < 0))) + goto fail; + tm.tm_year = year; + tm.tm_mon = month; + tm.tm_mday = day; + tm.tm_hour = tm0.tm_hour; + tm.tm_min = tm0.tm_min; + tm.tm_sec = tm0.tm_sec; + tm.tm_isdst = tm0.tm_isdst; + Start = mktime (&tm); + if (Start == (time_t) -1) + goto fail; + } + + /* The only "output" of this if-block is an updated Start value, + so this block must follow others that clobber Start. */ + if (pc.zones_seen) + { + long int delta = pc.time_zone * 60; + time_t t1; +#ifdef HAVE_TM_GMTOFF + delta -= tm.tm_gmtoff; +#else + time_t t = Start; + struct tm const *gmt = gmtime (&t); + if (! gmt) + goto fail; + delta -= tm_diff (&tm, gmt); +#endif + t1 = Start - delta; + if ((Start < t1) != (delta < 0)) + goto fail; /* time_t overflow */ + Start = t1; + } + + /* Add relative hours, minutes, and seconds. On hosts that support + leap seconds, ignore the possibility of leap seconds; e.g., + "+ 10 minutes" adds 600 seconds, even if one of them is a + leap second. Typically this is not what the user wants, but it's + too hard to do it the other way, because the time zone indicator + must be applied before relative times, and if mktime is applied + again the time zone will be lost. */ + { + long int sum_ns = pc.seconds.tv_nsec + pc.rel.ns; + long int normalized_ns = (sum_ns % BILLION + BILLION) % BILLION; + time_t t0 = Start; + long int d1 = 60 * 60 * pc.rel.hour; + time_t t1 = t0 + d1; + long int d2 = 60 * pc.rel.minutes; + time_t t2 = t1 + d2; + long_time_t d3 = pc.rel.seconds; + long_time_t t3 = t2 + d3; + long int d4 = (sum_ns - normalized_ns) / BILLION; + long_time_t t4 = t3 + d4; + time_t t5 = t4; + + if ((d1 / (60 * 60) ^ pc.rel.hour) + | (d2 / 60 ^ pc.rel.minutes) + | ((t1 < t0) ^ (d1 < 0)) + | ((t2 < t1) ^ (d2 < 0)) + | ((t3 < t2) ^ (d3 < 0)) + | ((t4 < t3) ^ (d4 < 0)) + | (t5 != t4)) + goto fail; + + result->tv_sec = t5; + result->tv_nsec = normalized_ns; + } + } + + goto done; + + fail: + ok = false; + done: + if (tz_was_altered) + ok &= (tz0 ? setenv ("TZ", tz0, 1) : unsetenv ("TZ")) == 0; + if (tz0 != tz0buf) + free (tz0); + 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 (! get_date (&d, buff, NULL)) + printf ("Bad format - couldn't convert.\n"); + else if (! (tm = localtime (&d.tv_sec))) + { + long int sec = d.tv_sec; + printf ("localtime (%ld) failed\n", sec); + } + else + { + int ns = d.tv_nsec; + printf ("%04ld-%02d-%02d %02d:%02d:%02d.%09d\n", + tm->tm_year + 1900L, 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 */ diff --git a/lib/getdate.y b/lib/getdate.y deleted file mode 100644 index 445865bdb8..0000000000 --- a/lib/getdate.y +++ /dev/null @@ -1,1572 +0,0 @@ -%{ -/* Parse a string into an internal time stamp. - - Copyright (C) 1999, 2000, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, - 2010 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 . */ - -/* Originally written by Steven M. Bellovin while - at the University of North Carolina at Chapel Hill. Later tweaked by - a couple of people on Usenet. Completely overhauled by Rich $alz - and Jim Berets in August, 1990. - - Modified by Paul Eggert in August 1999 to do - the right thing about local DST. Also modified by Paul Eggert - in February 2004 to support - nanosecond-resolution time stamps, and in October 2004 to support - TZ strings in dates. */ - -/* FIXME: Check for arithmetic overflow in all cases, not just - some of them. */ - -#include - -#include "getdate.h" - -#include "intprops.h" -#include "timespec.h" -#include "verify.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 getdate.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 -#include -#include -#include -#include - -#include "xalloc.h" - - -/* ISDIGIT differs from isdigit, as follows: - - Its arg may be any int or unsigned int; it need not be an unsigned char - or EOF. - - It's typically faster. - POSIX says that only '0' through '9' are digits. Prefer ISDIGIT to - isdigit unless it's important to use the locale's definition - of `digit' even when the host does not conform to POSIX. */ -#define ISDIGIT(c) ((unsigned int) (c) - '0' <= 9) - -/* 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 EPOCH_YEAR 1970 -#define TM_YEAR_BASE 1900 - -#define HOUR(x) ((x) * 60) - -/* long_time_t is a signed integer type that contains all time_t values. */ -verify (TYPE_IS_INTEGER (time_t)); -#if TIME_T_FITS_IN_LONG_INT -typedef long int long_time_t; -#else -typedef time_t long_time_t; -#endif - -/* Lots of this code assumes time_t and time_t-like values fit into - long_time_t. */ -verify (TYPE_MINIMUM (long_time_t) <= TYPE_MINIMUM (time_t) - && TYPE_MAXIMUM (time_t) <= TYPE_MAXIMUM (long_time_t)); - -/* FIXME: It also assumes that signed integer overflow silently wraps around, - but this is not true any more with recent versions of GCC 4. */ - -/* An integer value, and the number of digits in its textual - representation. */ -typedef struct -{ - bool negative; - long int value; - size_t digits; -} textint; - -/* An entry in the lexical lookup table. */ -typedef struct -{ - char const *name; - int type; - int value; -} table; - -/* Meridian: am, pm, or 24-hour style. */ -enum { MERam, MERpm, MER24 }; - -enum { BILLION = 1000000000, LOG10_BILLION = 9 }; - -/* Relative times. */ -typedef struct -{ - /* Relative year, month, day, hour, minutes, seconds, and nanoseconds. */ - long int year; - long int month; - long int day; - long int hour; - long int minutes; - long_time_t seconds; - long 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. */ - long int day_ordinal; - - /* Day of week; Sunday is 0. */ - int day_number; - - /* tm_isdst flag for the local zone. */ - int local_isdst; - - /* Time zone, in minutes east of UTC. */ - long int time_zone; - - /* Style used for time. */ - int meridian; - - /* Gregorian year, month, day, hour, minutes, seconds, and nanoseconds. */ - textint year; - long int month; - long int day; - long int hour; - long int 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; - size_t dates_seen; - size_t days_seen; - size_t local_zones_seen; - size_t dsts_seen; - size_t times_seen; - size_t zones_seen; - - /* Table of local time zone abbrevations, 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 long int time_zone_hhmm (parser_control *, textint, long int); - -/* Extract into *PC any date and time info from a string of digits - of the form e.g., YYYYMMDD, YYMMDD, HHMM, HH (and sometimes YYY, - YYYY, ...). */ -static void -digits_to_date_time (parser_control *pc, textint text_int) -{ - if (pc->dates_seen && ! pc->year.digits - && ! pc->rels_seen && (pc->times_seen || 2 < text_int.digits)) - pc->year = text_int; - else - { - if (4 < text_int.digits) - { - pc->dates_seen++; - pc->day = text_int.value % 100; - pc->month = (text_int.value / 100) % 100; - pc->year.value = text_int.value / 10000; - pc->year.digits = text_int.digits - 4; - } - else - { - pc->times_seen++; - if (text_int.digits <= 2) - { - pc->hour = text_int.value; - pc->minutes = 0; - } - else - { - pc->hour = text_int.value / 100; - pc->minutes = text_int.value % 100; - } - pc->seconds.tv_sec = 0; - pc->seconds.tv_nsec = 0; - pc->meridian = MER24; - } - } -} - -/* Increment PC->rel by FACTOR * REL (FACTOR is 1 or -1). */ -static void -apply_relative_time (parser_control *pc, relative_time rel, int factor) -{ - pc->rel.ns += factor * rel.ns; - pc->rel.seconds += factor * rel.seconds; - pc->rel.minutes += factor * rel.minutes; - pc->rel.hour += factor * rel.hour; - pc->rel.day += factor * rel.day; - pc->rel.month += factor * rel.month; - pc->rel.year += factor * rel.year; - pc->rels_seen = true; -} - -/* Set PC-> hour, minutes, seconds and nanoseconds members from arguments. */ -static void -set_hhmmss (parser_control *pc, long int hour, long int minutes, - time_t sec, long int nsec) -{ - pc->hour = hour; - pc->minutes = minutes; - pc->seconds.tv_sec = sec; - pc->seconds.tv_nsec = nsec; -} - -%} - -/* We want a reentrant parser, even if the TZ manipulation and the calls to - localtime and gmtime are not reentrant. */ -%pure-parser -%parse-param { parser_control *pc } -%lex-param { parser_control *pc } - -/* This grammar has 20 shift/reduce conflicts. */ -%expect 20 - -%union -{ - long int intval; - textint textintval; - struct timespec timespec; - relative_time rel; -} - -%token tAGO tDST - -%token tYEAR_UNIT tMONTH_UNIT tHOUR_UNIT tMINUTE_UNIT tSEC_UNIT -%token tDAY_UNIT tDAY_SHIFT - -%token tDAY tDAYZONE tLOCAL_ZONE tMERIDIAN -%token tMONTH tORDINAL tZONE - -%token tSNUMBER tUNUMBER -%token tSDECIMAL_NUMBER tUDECIMAL_NUMBER - -%type o_colon_minutes o_merid -%type seconds signed_seconds unsigned_seconds - -%type relunit relunit_snumber dayshift - -%% - -spec: - timespec - | items - ; - -timespec: - '@' seconds - { - pc->seconds = $2; - pc->timespec_seen = true; - } - ; - -items: - /* empty */ - | items item - ; - -item: - time - { pc->times_seen++; } - | local_zone - { pc->local_zones_seen++; } - | zone - { pc->zones_seen++; } - | date - { pc->dates_seen++; } - | day - { pc->days_seen++; } - | rel - | number - | hybrid - ; - -time: - tUNUMBER tMERIDIAN - { - set_hhmmss (pc, $1.value, 0, 0, 0); - pc->meridian = $2; - } - | tUNUMBER ':' tUNUMBER o_merid - { - set_hhmmss (pc, $1.value, $3.value, 0, 0); - pc->meridian = $4; - } - | tUNUMBER ':' tUNUMBER tSNUMBER o_colon_minutes - { - set_hhmmss (pc, $1.value, $3.value, 0, 0); - pc->meridian = MER24; - pc->zones_seen++; - pc->time_zone = time_zone_hhmm (pc, $4, $5); - } - | tUNUMBER ':' tUNUMBER ':' unsigned_seconds o_merid - { - set_hhmmss (pc, $1.value, $3.value, $5.tv_sec, $5.tv_nsec); - pc->meridian = $6; - } - | tUNUMBER ':' tUNUMBER ':' unsigned_seconds tSNUMBER o_colon_minutes - { - set_hhmmss (pc, $1.value, $3.value, $5.tv_sec, $5.tv_nsec); - pc->meridian = MER24; - pc->zones_seen++; - pc->time_zone = time_zone_hhmm (pc, $6, $7); - } - ; - -local_zone: - tLOCAL_ZONE - { - pc->local_isdst = $1; - pc->dsts_seen += (0 < $1); - } - | tLOCAL_ZONE tDST - { - pc->local_isdst = 1; - pc->dsts_seen += (0 < $1) + 1; - } - ; - -zone: - tZONE - { pc->time_zone = $1; } - | tZONE relunit_snumber - { pc->time_zone = $1; - apply_relative_time (pc, $2, 1); } - | tZONE tSNUMBER o_colon_minutes - { pc->time_zone = $1 + time_zone_hhmm (pc, $2, $3); } - | tDAYZONE - { pc->time_zone = $1 + 60; } - | tZONE tDST - { pc->time_zone = $1 + 60; } - ; - -day: - tDAY - { - pc->day_ordinal = 0; - pc->day_number = $1; - } - | tDAY ',' - { - pc->day_ordinal = 0; - pc->day_number = $1; - } - | tORDINAL tDAY - { - pc->day_ordinal = $1; - pc->day_number = $2; - } - | tUNUMBER tDAY - { - pc->day_ordinal = $1.value; - pc->day_number = $2; - } - ; - -date: - tUNUMBER '/' tUNUMBER - { - pc->month = $1.value; - pc->day = $3.value; - } - | tUNUMBER '/' tUNUMBER '/' tUNUMBER - { - /* 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 <= $1.digits) - { - pc->year = $1; - pc->month = $3.value; - pc->day = $5.value; - } - else - { - pc->month = $1.value; - pc->day = $3.value; - pc->year = $5; - } - } - | tUNUMBER tSNUMBER tSNUMBER - { - /* ISO 8601 format. YYYY-MM-DD. */ - pc->year = $1; - pc->month = -$2.value; - pc->day = -$3.value; - } - | tUNUMBER tMONTH tSNUMBER - { - /* e.g. 17-JUN-1992. */ - pc->day = $1.value; - pc->month = $2; - pc->year.value = -$3.value; - pc->year.digits = $3.digits; - } - | tMONTH tSNUMBER tSNUMBER - { - /* e.g. JUN-17-1992. */ - pc->month = $1; - pc->day = -$2.value; - pc->year.value = -$3.value; - pc->year.digits = $3.digits; - } - | tMONTH tUNUMBER - { - pc->month = $1; - pc->day = $2.value; - } - | tMONTH tUNUMBER ',' tUNUMBER - { - pc->month = $1; - pc->day = $2.value; - pc->year = $4; - } - | tUNUMBER tMONTH - { - pc->day = $1.value; - pc->month = $2; - } - | tUNUMBER tMONTH tUNUMBER - { - pc->day = $1.value; - pc->month = $2; - pc->year = $3; - } - ; - -rel: - relunit tAGO - { apply_relative_time (pc, $1, -1); } - | relunit - { apply_relative_time (pc, $1, 1); } - | dayshift - { apply_relative_time (pc, $1, 1); } - ; - -relunit: - tORDINAL tYEAR_UNIT - { $$ = RELATIVE_TIME_0; $$.year = $1; } - | tUNUMBER tYEAR_UNIT - { $$ = RELATIVE_TIME_0; $$.year = $1.value; } - | tYEAR_UNIT - { $$ = RELATIVE_TIME_0; $$.year = 1; } - | tORDINAL tMONTH_UNIT - { $$ = RELATIVE_TIME_0; $$.month = $1; } - | tUNUMBER tMONTH_UNIT - { $$ = RELATIVE_TIME_0; $$.month = $1.value; } - | tMONTH_UNIT - { $$ = RELATIVE_TIME_0; $$.month = 1; } - | tORDINAL tDAY_UNIT - { $$ = RELATIVE_TIME_0; $$.day = $1 * $2; } - | tUNUMBER tDAY_UNIT - { $$ = RELATIVE_TIME_0; $$.day = $1.value * $2; } - | tDAY_UNIT - { $$ = RELATIVE_TIME_0; $$.day = $1; } - | tORDINAL tHOUR_UNIT - { $$ = RELATIVE_TIME_0; $$.hour = $1; } - | tUNUMBER tHOUR_UNIT - { $$ = RELATIVE_TIME_0; $$.hour = $1.value; } - | tHOUR_UNIT - { $$ = RELATIVE_TIME_0; $$.hour = 1; } - | tORDINAL tMINUTE_UNIT - { $$ = RELATIVE_TIME_0; $$.minutes = $1; } - | tUNUMBER tMINUTE_UNIT - { $$ = RELATIVE_TIME_0; $$.minutes = $1.value; } - | tMINUTE_UNIT - { $$ = RELATIVE_TIME_0; $$.minutes = 1; } - | tORDINAL tSEC_UNIT - { $$ = RELATIVE_TIME_0; $$.seconds = $1; } - | tUNUMBER tSEC_UNIT - { $$ = RELATIVE_TIME_0; $$.seconds = $1.value; } - | tSDECIMAL_NUMBER tSEC_UNIT - { $$ = RELATIVE_TIME_0; $$.seconds = $1.tv_sec; $$.ns = $1.tv_nsec; } - | tUDECIMAL_NUMBER tSEC_UNIT - { $$ = RELATIVE_TIME_0; $$.seconds = $1.tv_sec; $$.ns = $1.tv_nsec; } - | tSEC_UNIT - { $$ = RELATIVE_TIME_0; $$.seconds = 1; } - | relunit_snumber - ; - -relunit_snumber: - tSNUMBER tYEAR_UNIT - { $$ = RELATIVE_TIME_0; $$.year = $1.value; } - | tSNUMBER tMONTH_UNIT - { $$ = RELATIVE_TIME_0; $$.month = $1.value; } - | tSNUMBER tDAY_UNIT - { $$ = RELATIVE_TIME_0; $$.day = $1.value * $2; } - | tSNUMBER tHOUR_UNIT - { $$ = RELATIVE_TIME_0; $$.hour = $1.value; } - | tSNUMBER tMINUTE_UNIT - { $$ = RELATIVE_TIME_0; $$.minutes = $1.value; } - | tSNUMBER tSEC_UNIT - { $$ = RELATIVE_TIME_0; $$.seconds = $1.value; } - ; - -dayshift: - tDAY_SHIFT - { $$ = RELATIVE_TIME_0; $$.day = $1; } - ; - -seconds: signed_seconds | unsigned_seconds; - -signed_seconds: - tSDECIMAL_NUMBER - | tSNUMBER - { $$.tv_sec = $1.value; $$.tv_nsec = 0; } - ; - -unsigned_seconds: - tUDECIMAL_NUMBER - | tUNUMBER - { $$.tv_sec = $1.value; $$.tv_nsec = 0; } - ; - -number: - tUNUMBER - { digits_to_date_time (pc, $1); } - ; - -hybrid: - tUNUMBER relunit_snumber - { - /* 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, $1); - apply_relative_time (pc, $2, 1); - } - ; - -o_colon_minutes: - /* empty */ - { $$ = -1; } - | ':' tUNUMBER - { $$ = $2.value; } - ; - -o_merid: - /* empty */ - { $$ = MER24; } - | tMERIDIAN - { $$ = $1; } - ; - -%% - -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 }, - { NULL, 0, 0 } -}; - -/* The universal time zone table. These labels can be used even for - time stamps that would not otherwise be valid, e.g., GMT time - stamps in London during summer. */ -static table const universal_time_zone_table[] = -{ - { "GMT", tZONE, HOUR ( 0) }, /* Greenwich Mean */ - { "UT", tZONE, HOUR ( 0) }, /* Universal (Coordinated) */ - { "UTC", tZONE, HOUR ( 0) }, - { NULL, 0, 0 } -}; - -/* The time zone table. This table is necessarily incomplete, as time - zone abbreviations are ambiguous; e.g. Australians interpret "EST" - as Eastern time in Australia, not as US Eastern Standard Time. - You cannot rely on getdate to handle arbitrary time zone - abbreviations; use numeric abbreviations like `-0500' instead. */ -static table const time_zone_table[] = -{ - { "WET", tZONE, HOUR ( 0) }, /* Western European */ - { "WEST", tDAYZONE, HOUR ( 0) }, /* Western European Summer */ - { "BST", tDAYZONE, HOUR ( 0) }, /* British Summer */ - { "ART", tZONE, -HOUR ( 3) }, /* Argentina */ - { "BRT", tZONE, -HOUR ( 3) }, /* Brazil */ - { "BRST", tDAYZONE, -HOUR ( 3) }, /* Brazil Summer */ - { "NST", tZONE, -(HOUR ( 3) + 30) }, /* Newfoundland Standard */ - { "NDT", tDAYZONE,-(HOUR ( 3) + 30) }, /* Newfoundland Daylight */ - { "AST", tZONE, -HOUR ( 4) }, /* Atlantic Standard */ - { "ADT", tDAYZONE, -HOUR ( 4) }, /* Atlantic Daylight */ - { "CLT", tZONE, -HOUR ( 4) }, /* Chile */ - { "CLST", tDAYZONE, -HOUR ( 4) }, /* Chile Summer */ - { "EST", tZONE, -HOUR ( 5) }, /* Eastern Standard */ - { "EDT", tDAYZONE, -HOUR ( 5) }, /* Eastern Daylight */ - { "CST", tZONE, -HOUR ( 6) }, /* Central Standard */ - { "CDT", tDAYZONE, -HOUR ( 6) }, /* Central Daylight */ - { "MST", tZONE, -HOUR ( 7) }, /* Mountain Standard */ - { "MDT", tDAYZONE, -HOUR ( 7) }, /* Mountain Daylight */ - { "PST", tZONE, -HOUR ( 8) }, /* Pacific Standard */ - { "PDT", tDAYZONE, -HOUR ( 8) }, /* Pacific Daylight */ - { "AKST", tZONE, -HOUR ( 9) }, /* Alaska Standard */ - { "AKDT", tDAYZONE, -HOUR ( 9) }, /* Alaska Daylight */ - { "HST", tZONE, -HOUR (10) }, /* Hawaii Standard */ - { "HAST", tZONE, -HOUR (10) }, /* Hawaii-Aleutian Standard */ - { "HADT", tDAYZONE, -HOUR (10) }, /* Hawaii-Aleutian Daylight */ - { "SST", tZONE, -HOUR (12) }, /* Samoa Standard */ - { "WAT", tZONE, HOUR ( 1) }, /* West Africa */ - { "CET", tZONE, HOUR ( 1) }, /* Central European */ - { "CEST", tDAYZONE, HOUR ( 1) }, /* Central European Summer */ - { "MET", tZONE, HOUR ( 1) }, /* Middle European */ - { "MEZ", tZONE, HOUR ( 1) }, /* Middle European */ - { "MEST", tDAYZONE, HOUR ( 1) }, /* Middle European Summer */ - { "MESZ", tDAYZONE, HOUR ( 1) }, /* Middle European Summer */ - { "EET", tZONE, HOUR ( 2) }, /* Eastern European */ - { "EEST", tDAYZONE, HOUR ( 2) }, /* Eastern European Summer */ - { "CAT", tZONE, HOUR ( 2) }, /* Central Africa */ - { "SAST", tZONE, HOUR ( 2) }, /* South Africa Standard */ - { "EAT", tZONE, HOUR ( 3) }, /* East Africa */ - { "MSK", tZONE, HOUR ( 3) }, /* Moscow */ - { "MSD", tDAYZONE, HOUR ( 3) }, /* Moscow Daylight */ - { "IST", tZONE, (HOUR ( 5) + 30) }, /* India Standard */ - { "SGT", tZONE, HOUR ( 8) }, /* Singapore */ - { "KST", tZONE, HOUR ( 9) }, /* Korea Standard */ - { "JST", tZONE, HOUR ( 9) }, /* Japan Standard */ - { "GST", tZONE, HOUR (10) }, /* Guam Standard */ - { "NZST", tZONE, HOUR (12) }, /* New Zealand Standard */ - { "NZDT", tDAYZONE, HOUR (12) }, /* New Zealand Daylight */ - { NULL, 0, 0 } -}; - -/* Military time zone table. */ -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", tZONE, HOUR ( 7) }, - { "U", tZONE, HOUR ( 8) }, - { "V", tZONE, HOUR ( 9) }, - { "W", tZONE, HOUR (10) }, - { "X", tZONE, HOUR (11) }, - { "Y", tZONE, HOUR (12) }, - { "Z", tZONE, HOUR ( 0) }, - { NULL, 0, 0 } -}; - - - -/* Convert a time zone expressed as HH:MM into an integer count of - minutes. 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 - http://www.opengroup.org/susv3xbd/xbd_chap08.html#tag_08_03, allow - only valid TZ range, and consider first two digits as hours, if no - minutes specified. */ - -static long int -time_zone_hhmm (parser_control *pc, textint s, long int mm) -{ - long int n_minutes; - - /* 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 - n_minutes = s.value * 60 + (s.negative ? -mm : mm); - - /* If the absolute number of minutes is larger than 24 hours, - arrange to reject it by incrementing pc->zones_seen. Thus, - we allow only values in the range UTC-24:00 to UTC+24:00. */ - if (24 * 60 < abs (n_minutes)) - pc->zones_seen++; - - return n_minutes; -} - -static int -to_hour (long int hours, int meridian) -{ - switch (meridian) - { - default: /* Pacify GCC. */ - case MER24: - return 0 <= hours && hours < 24 ? hours : -1; - case MERam: - return 0 < hours && hours < 12 ? hours : hours == 12 ? 0 : -1; - case MERpm: - return 0 < hours && hours < 12 ? hours + 12 : hours == 12 ? 12 : -1; - } -} - -static long int -to_year (textint textyear) -{ - long int year = textyear.value; - - if (year < 0) - year = -year; - - /* XPG4 suggests that years 00-68 map to 2000-2068, and - years 69-99 map to 1969-1999. */ - else if (textyear.digits == 2) - year += year < 69 ? 2000 : 1900; - - return year; -} - -static table const * -lookup_zone (parser_control const *pc, char const *name) -{ - table const *tp; - - for (tp = universal_time_zone_table; tp->name; tp++) - if (strcmp (name, tp->name) == 0) - return tp; - - /* Try local zone abbreviations before those in time_zone_table, as - the local ones are more likely to be right. */ - for (tp = pc->local_time_zone_table; tp->name; tp++) - if (strcmp (name, tp->name) == 0) - return tp; - - for (tp = time_zone_table; tp->name; tp++) - if (strcmp (name, tp->name) == 0) - return tp; - - return NULL; -} - -#if ! HAVE_TM_GMTOFF -/* Yield the difference between *A and *B, - measured in seconds, ignoring leap seconds. - The body of this function is taken directly from the GNU C Library; - see src/strftime.c. */ -static long int -tm_diff (struct tm const *a, struct tm const *b) -{ - /* Compute intervening leap days correctly even if year is negative. - Take care to avoid int overflow in leap day calculations. */ - int a4 = SHR (a->tm_year, 2) + SHR (TM_YEAR_BASE, 2) - ! (a->tm_year & 3); - int b4 = SHR (b->tm_year, 2) + SHR (TM_YEAR_BASE, 2) - ! (b->tm_year & 3); - int a100 = a4 / 25 - (a4 % 25 < 0); - int b100 = b4 / 25 - (b4 % 25 < 0); - int a400 = SHR (a100, 2); - int b400 = SHR (b100, 2); - int intervening_leap_days = (a4 - b4) - (a100 - b100) + (a400 - b400); - long int ayear = a->tm_year; - long int years = ayear - b->tm_year; - long int days = (365 * years + intervening_leap_days - + (a->tm_yday - b->tm_yday)); - return (60 * (60 * (24 * days + (a->tm_hour - b->tm_hour)) - + (a->tm_min - b->tm_min)) - + (a->tm_sec - b->tm_sec)); -} -#endif /* ! HAVE_TM_GMTOFF */ - -static table const * -lookup_word (parser_control const *pc, char *word) -{ - char *p; - char *q; - size_t wordlen; - table const *tp; - bool period_found; - bool abbrev; - - /* Make it uppercase. */ - for (p = word; *p; p++) - { - unsigned char ch = *p; - *p = c_toupper (ch); - } - - 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 (YYSTYPE *lvalp, parser_control *pc) -{ - unsigned char c; - size_t count; - - for (;;) - { - while (c = *pc->input, c_isspace (c)) - pc->input++; - - if (ISDIGIT (c) || c == '-' || c == '+') - { - char const *p; - int sign; - unsigned long int value; - if (c == '-' || c == '+') - { - sign = c == '-' ? -1 : 1; - while (c = *++pc->input, c_isspace (c)) - continue; - if (! ISDIGIT (c)) - /* skip the '-' sign */ - continue; - } - else - sign = 0; - p = pc->input; - for (value = 0; ; value *= 10) - { - unsigned long int value1 = value + (c - '0'); - if (value1 < value) - return '?'; - value = value1; - c = *++p; - if (! ISDIGIT (c)) - break; - if (ULONG_MAX / 10 < value) - return '?'; - } - if ((c == '.' || c == ',') && ISDIGIT (p[1])) - { - time_t s; - int ns; - int digits; - unsigned long int value1; - - /* Check for overflow when converting value to time_t. */ - if (sign < 0) - { - s = - value; - if (0 < s) - return '?'; - value1 = -s; - } - else - { - s = value; - if (s < 0) - return '?'; - value1 = s; - } - if (value != value1) - return '?'; - - /* Accumulate fraction, to ns precision. */ - p++; - ns = *p++ - '0'; - for (digits = 2; digits <= LOG10_BILLION; digits++) - { - ns *= 10; - if (ISDIGIT (*p)) - ns += *p++ - '0'; - } - - /* Skip excess digits, truncating toward -Infinity. */ - if (sign < 0) - for (; ISDIGIT (*p); p++) - if (*p != '0') - { - ns++; - break; - } - while (ISDIGIT (*p)) - p++; - - /* Adjust to the timespec convention, which is that - tv_nsec is always a positive offset even if tv_sec is - negative. */ - if (sign < 0 && ns) - { - s--; - if (! (s < 0)) - return '?'; - ns = BILLION - ns; - } - - lvalp->timespec.tv_sec = s; - lvalp->timespec.tv_nsec = ns; - pc->input = p; - return sign ? tSDECIMAL_NUMBER : tUDECIMAL_NUMBER; - } - else - { - lvalp->textintval.negative = sign < 0; - if (sign < 0) - { - lvalp->textintval.value = - value; - if (0 < lvalp->textintval.value) - return '?'; - } - else - { - lvalp->textintval.value = value; - if (lvalp->textintval.value < 0) - return '?'; - } - lvalp->textintval.digits = p - pc->input; - pc->input = p; - return sign ? tSNUMBER : tUNUMBER; - } - } - - if (c_isalpha (c)) - { - char buff[20]; - char *p = buff; - table const *tp; - - do - { - if (p < buff + sizeof buff - 1) - *p++ = c; - c = *++pc->input; - } - while (c_isalpha (c) || c == '.'); - - *p = '\0'; - tp = lookup_word (pc, buff); - if (! tp) - return '?'; - lvalp->intval = tp->value; - return tp->type; - } - - if (c != '(') - return *pc->input++; - count = 0; - do - { - c = *pc->input++; - if (c == '\0') - return c; - if (c == '(') - count++; - else if (c == ')') - count--; - } - while (count != 0); - } -} - -/* Do nothing if the parser reports an error. */ -static int -yyerror (parser_control const *pc _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, return true if it's OK that mktime returned T. - It's not OK if *TM0 has out-of-range members. */ - -static bool -mktime_ok (struct tm const *tm0, struct tm const *tm1, time_t t) -{ - if (t == (time_t) -1) - { - /* Guard against falsely reporting an error when parsing a time - stamp that happens to equal (time_t) -1, on a host that - supports such a time stamp. */ - tm1 = localtime (&t); - if (!tm1) - 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)); -} - -/* A reasonable upper bound for the size of ordinary TZ strings. - Use heap allocation if TZ's length exceeds this. */ -enum { TZBUFSIZE = 100 }; - -/* Return a copy of TZ, stored in TZBUF if it fits, and heap-allocated - otherwise. */ -static char * -get_tz (char tzbuf[TZBUFSIZE]) -{ - char *tz = getenv ("TZ"); - if (tz) - { - size_t tzsize = strlen (tz) + 1; - tz = (tzsize <= TZBUFSIZE - ? memcpy (tzbuf, tz, tzsize) - : xmemdup (tz, tzsize)); - } - return tz; -} - -/* 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. */ -bool -get_date (struct timespec *result, char const *p, struct timespec const *now) -{ - time_t Start; - long int Start_ns; - struct tm const *tmp; - struct tm tm; - struct tm tm0; - parser_control pc; - struct timespec gettime_buffer; - unsigned char c; - bool tz_was_altered = false; - char *tz0 = NULL; - char tz0buf[TZBUFSIZE]; - bool ok = true; - - if (! now) - { - gettime (&gettime_buffer); - now = &gettime_buffer; - } - - Start = now->tv_sec; - Start_ns = now->tv_nsec; - - tmp = localtime (&now->tv_sec); - if (! tmp) - return false; - - while (c = *p, c_isspace (c)) - p++; - - if (strncmp (p, "TZ=\"", 4) == 0) - { - char const *tzbase = p + 4; - size_t tzsize = 1; - char const *s; - - for (s = tzbase; *s; s++, tzsize++) - if (*s == '\\') - { - s++; - if (! (*s == '\\' || *s == '"')) - break; - } - else if (*s == '"') - { - char *z; - char *tz1; - char tz1buf[TZBUFSIZE]; - bool large_tz = TZBUFSIZE < tzsize; - bool setenv_ok; - /* Free tz0, in case this is the 2nd or subsequent time through. */ - free (tz0); - tz0 = get_tz (tz0buf); - z = tz1 = large_tz ? xmalloc (tzsize) : tz1buf; - for (s = tzbase; *s != '"'; s++) - *z++ = *(s += *s == '\\'); - *z = '\0'; - setenv_ok = setenv ("TZ", tz1, 1) == 0; - if (large_tz) - free (tz1); - if (!setenv_ok) - goto fail; - tz_was_altered = true; - p = s + 1; - } - } - - /* As documented, be careful to treat the empty string just like - a date string of "0". Without this, an empty string would be - declared invalid when parsed during a DST transition. */ - if (*p == '\0') - p = "0"; - - pc.input = p; - pc.year.value = tmp->tm_year; - pc.year.value += TM_YEAR_BASE; - pc.year.digits = 0; - pc.month = tmp->tm_mon + 1; - pc.day = tmp->tm_mday; - pc.hour = tmp->tm_hour; - pc.minutes = tmp->tm_min; - pc.seconds.tv_sec = tmp->tm_sec; - pc.seconds.tv_nsec = Start_ns; - tm.tm_isdst = tmp->tm_isdst; - - pc.meridian = MER24; - pc.rel = RELATIVE_TIME_0; - pc.timespec_seen = 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; - -#if HAVE_STRUCT_TM_TM_ZONE - pc.local_time_zone_table[0].name = tmp->tm_zone; - pc.local_time_zone_table[0].type = tLOCAL_ZONE; - pc.local_time_zone_table[0].value = tmp->tm_isdst; - pc.local_time_zone_table[1].name = NULL; - - /* Probe the names used in the next three calendar quarters, looking - for a tm_isdst different from the one we already have. */ - { - int quarter; - for (quarter = 1; quarter <= 3; quarter++) - { - time_t probe = Start + quarter * (90 * 24 * 60 * 60); - struct tm const *probe_tm = localtime (&probe); - if (probe_tm && probe_tm->tm_zone - && probe_tm->tm_isdst != pc.local_time_zone_table[0].value) - { - { - pc.local_time_zone_table[1].name = probe_tm->tm_zone; - pc.local_time_zone_table[1].type = tLOCAL_ZONE; - pc.local_time_zone_table[1].value = probe_tm->tm_isdst; - pc.local_time_zone_table[2].name = NULL; - } - break; - } - } - } -#else -#if HAVE_TZNAME - { -# if !HAVE_DECL_TZNAME - extern char *tzname[]; -# endif - int i; - for (i = 0; i < 2; i++) - { - pc.local_time_zone_table[i].name = tzname[i]; - pc.local_time_zone_table[i].type = tLOCAL_ZONE; - pc.local_time_zone_table[i].value = i; - } - pc.local_time_zone_table[i].name = NULL; - } -#else - pc.local_time_zone_table[0].name = NULL; -#endif -#endif - - if (pc.local_time_zone_table[0].name && pc.local_time_zone_table[1].name - && ! strcmp (pc.local_time_zone_table[0].name, - pc.local_time_zone_table[1].name)) - { - /* This locale uses the same abbrevation for standard and - daylight times. So if we see that abbreviation, we don't - know whether it's daylight time. */ - pc.local_time_zone_table[0].value = -1; - pc.local_time_zone_table[1].name = NULL; - } - - if (yyparse (&pc) != 0) - goto fail; - - if (pc.timespec_seen) - *result = pc.seconds; - else - { - if (1 < (pc.times_seen | pc.dates_seen | pc.days_seen | pc.dsts_seen - | (pc.local_zones_seen + pc.zones_seen))) - goto fail; - - tm.tm_year = to_year (pc.year) - TM_YEAR_BASE; - tm.tm_mon = pc.month - 1; - tm.tm_mday = pc.day; - if (pc.times_seen || (pc.rels_seen && ! pc.dates_seen && ! pc.days_seen)) - { - tm.tm_hour = to_hour (pc.hour, pc.meridian); - if (tm.tm_hour < 0) - goto fail; - tm.tm_min = pc.minutes; - tm.tm_sec = pc.seconds.tv_sec; - } - else - { - tm.tm_hour = tm.tm_min = tm.tm_sec = 0; - pc.seconds.tv_nsec = 0; - } - - /* Let mktime deduce tm_isdst if we have an absolute time stamp. */ - if (pc.dates_seen | pc.days_seen | pc.times_seen) - tm.tm_isdst = -1; - - /* But if the input explicitly specifies local time with or without - DST, give mktime that information. */ - if (pc.local_zones_seen) - tm.tm_isdst = pc.local_isdst; - - tm0 = tm; - - Start = mktime (&tm); - - if (! mktime_ok (&tm0, &tm, Start)) - { - if (! pc.zones_seen) - goto fail; - else - { - /* Guard against falsely reporting errors near the time_t - boundaries when parsing times in other time zones. For - example, suppose the input string "1969-12-31 23:00:00 -0100", - the current time zone is 8 hours ahead of UTC, and the min - time_t value is 1970-01-01 00:00:00 UTC. Then the min - localtime value is 1970-01-01 08:00:00, and mktime will - therefore fail on 1969-12-31 23:00:00. To work around the - problem, set the time zone to 1 hour behind UTC temporarily - by setting TZ="XXX1:00" and try mktime again. */ - - long int time_zone = pc.time_zone; - long int abs_time_zone = time_zone < 0 ? - time_zone : time_zone; - long int abs_time_zone_hour = abs_time_zone / 60; - int abs_time_zone_min = abs_time_zone % 60; - char tz1buf[sizeof "XXX+0:00" - + sizeof pc.time_zone * CHAR_BIT / 3]; - if (!tz_was_altered) - tz0 = get_tz (tz0buf); - sprintf (tz1buf, "XXX%s%ld:%02d", "-" + (time_zone < 0), - abs_time_zone_hour, abs_time_zone_min); - if (setenv ("TZ", tz1buf, 1) != 0) - goto fail; - tz_was_altered = true; - tm = tm0; - Start = mktime (&tm); - if (! mktime_ok (&tm0, &tm, Start)) - goto fail; - } - } - - if (pc.days_seen && ! pc.dates_seen) - { - tm.tm_mday += ((pc.day_number - tm.tm_wday + 7) % 7 - + 7 * (pc.day_ordinal - - (0 < pc.day_ordinal - && tm.tm_wday != pc.day_number))); - tm.tm_isdst = -1; - Start = mktime (&tm); - if (Start == (time_t) -1) - goto fail; - } - - /* Add relative date. */ - if (pc.rel.year | pc.rel.month | pc.rel.day) - { - int year = tm.tm_year + pc.rel.year; - int month = tm.tm_mon + pc.rel.month; - int day = tm.tm_mday + pc.rel.day; - if (((year < tm.tm_year) ^ (pc.rel.year < 0)) - | ((month < tm.tm_mon) ^ (pc.rel.month < 0)) - | ((day < tm.tm_mday) ^ (pc.rel.day < 0))) - goto fail; - tm.tm_year = year; - tm.tm_mon = month; - tm.tm_mday = day; - tm.tm_hour = tm0.tm_hour; - tm.tm_min = tm0.tm_min; - tm.tm_sec = tm0.tm_sec; - tm.tm_isdst = tm0.tm_isdst; - Start = mktime (&tm); - if (Start == (time_t) -1) - goto fail; - } - - /* The only "output" of this if-block is an updated Start value, - so this block must follow others that clobber Start. */ - if (pc.zones_seen) - { - long int delta = pc.time_zone * 60; - time_t t1; -#ifdef HAVE_TM_GMTOFF - delta -= tm.tm_gmtoff; -#else - time_t t = Start; - struct tm const *gmt = gmtime (&t); - if (! gmt) - goto fail; - delta -= tm_diff (&tm, gmt); -#endif - t1 = Start - delta; - if ((Start < t1) != (delta < 0)) - goto fail; /* time_t overflow */ - Start = t1; - } - - /* Add relative hours, minutes, and seconds. On hosts that support - leap seconds, ignore the possibility of leap seconds; e.g., - "+ 10 minutes" adds 600 seconds, even if one of them is a - leap second. Typically this is not what the user wants, but it's - too hard to do it the other way, because the time zone indicator - must be applied before relative times, and if mktime is applied - again the time zone will be lost. */ - { - long int sum_ns = pc.seconds.tv_nsec + pc.rel.ns; - long int normalized_ns = (sum_ns % BILLION + BILLION) % BILLION; - time_t t0 = Start; - long int d1 = 60 * 60 * pc.rel.hour; - time_t t1 = t0 + d1; - long int d2 = 60 * pc.rel.minutes; - time_t t2 = t1 + d2; - long_time_t d3 = pc.rel.seconds; - long_time_t t3 = t2 + d3; - long int d4 = (sum_ns - normalized_ns) / BILLION; - long_time_t t4 = t3 + d4; - time_t t5 = t4; - - if ((d1 / (60 * 60) ^ pc.rel.hour) - | (d2 / 60 ^ pc.rel.minutes) - | ((t1 < t0) ^ (d1 < 0)) - | ((t2 < t1) ^ (d2 < 0)) - | ((t3 < t2) ^ (d3 < 0)) - | ((t4 < t3) ^ (d4 < 0)) - | (t5 != t4)) - goto fail; - - result->tv_sec = t5; - result->tv_nsec = normalized_ns; - } - } - - goto done; - - fail: - ok = false; - done: - if (tz_was_altered) - ok &= (tz0 ? setenv ("TZ", tz0, 1) : unsetenv ("TZ")) == 0; - if (tz0 != tz0buf) - free (tz0); - 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 (! get_date (&d, buff, NULL)) - printf ("Bad format - couldn't convert.\n"); - else if (! (tm = localtime (&d.tv_sec))) - { - long int sec = d.tv_sec; - printf ("localtime (%ld) failed\n", sec); - } - else - { - int ns = d.tv_nsec; - printf ("%04ld-%02d-%02d %02d:%02d:%02d.%09d\n", - tm->tm_year + 1900L, 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 */ diff --git a/m4/get_date.m4 b/m4/get_date.m4 new file mode 100644 index 0000000000..6cb2e1d305 --- /dev/null +++ b/m4/get_date.m4 @@ -0,0 +1,53 @@ +# getdate.m4 serial 17 +dnl Copyright (C) 2002-2006, 2008-2010 Free Software Foundation, Inc. +dnl This file is free software; the Free Software Foundation +dnl gives unlimited permission to copy and/or distribute it, +dnl with or without modifications, as long as this notice is preserved. + +dnl Define HAVE_COMPOUND_LITERALS if the C compiler supports compound literals +dnl as in ISO C99. +dnl Note that compound literals such as (struct s) { 3, 4 } can be used for +dnl initialization of stack-allocated variables, but are not constant +dnl expressions and therefore cannot be used as initializer for global or +dnl static variables (even though gcc supports this in pre-C99 mode). +AC_DEFUN([gl_C_COMPOUND_LITERALS], +[ + AC_CACHE_CHECK([for compound literals], [gl_cv_compound_literals], + [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[struct s { int i, j; };]], + [[struct s t = (struct s) { 3, 4 }; + if (t.i != 0) return 0;]])], + gl_cv_compound_literals=yes, + gl_cv_compound_literals=no)]) + if test $gl_cv_compound_literals = yes; then + AC_DEFINE([HAVE_COMPOUND_LITERALS], [1], + [Define if you have compound literals.]) + fi +]) + +AC_DEFUN([gl_GET_DATE], +[ + dnl Prerequisites of lib/getdate.h. + AC_REQUIRE([AM_STDBOOL_H]) + AC_REQUIRE([gl_TIMESPEC]) + + dnl Prerequisites of lib/getdate.y. + AC_REQUIRE([gl_BISON]) + AC_REQUIRE([gl_C_COMPOUND_LITERALS]) + AC_STRUCT_TIMEZONE + AC_REQUIRE([gl_CLOCK_TIME]) + AC_REQUIRE([gl_TM_GMTOFF]) + AC_COMPILE_IFELSE( + [AC_LANG_SOURCE([[ +#include /* for time_t */ +#include /* for CHAR_BIT, LONG_MIN, LONG_MAX */ +#define TYPE_MINIMUM(t) \ + ((t) ((t) 0 < (t) -1 ? (t) 0 : ~ (t) 0 << (sizeof (t) * CHAR_BIT - 1))) +#define TYPE_MAXIMUM(t) \ + ((t) ((t) 0 < (t) -1 ? (t) -1 : ~ (~ (t) 0 << (sizeof (t) * CHAR_BIT - 1)))) +typedef int verify_min[2 * (LONG_MIN <= TYPE_MINIMUM (time_t)) - 1]; +typedef int verify_max[2 * (TYPE_MAXIMUM (time_t) <= LONG_MAX) - 1]; + ]])], + [AC_DEFINE([TIME_T_FITS_IN_LONG_INT], [1], + [Define to 1 if all 'time_t' values fit in a 'long int'.]) + ]) +]) diff --git a/m4/getdate.m4 b/m4/getdate.m4 deleted file mode 100644 index 5f98229f6a..0000000000 --- a/m4/getdate.m4 +++ /dev/null @@ -1,53 +0,0 @@ -# getdate.m4 serial 16 -dnl Copyright (C) 2002-2006, 2008-2010 Free Software Foundation, Inc. -dnl This file is free software; the Free Software Foundation -dnl gives unlimited permission to copy and/or distribute it, -dnl with or without modifications, as long as this notice is preserved. - -dnl Define HAVE_COMPOUND_LITERALS if the C compiler supports compound literals -dnl as in ISO C99. -dnl Note that compound literals such as (struct s) { 3, 4 } can be used for -dnl initialization of stack-allocated variables, but are not constant -dnl expressions and therefore cannot be used as initializer for global or -dnl static variables (even though gcc supports this in pre-C99 mode). -AC_DEFUN([gl_C_COMPOUND_LITERALS], -[ - AC_CACHE_CHECK([for compound literals], [gl_cv_compound_literals], - [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[struct s { int i, j; };]], - [[struct s t = (struct s) { 3, 4 }; - if (t.i != 0) return 0;]])], - gl_cv_compound_literals=yes, - gl_cv_compound_literals=no)]) - if test $gl_cv_compound_literals = yes; then - AC_DEFINE([HAVE_COMPOUND_LITERALS], [1], - [Define if you have compound literals.]) - fi -]) - -AC_DEFUN([gl_GETDATE], -[ - dnl Prerequisites of lib/getdate.h. - AC_REQUIRE([AM_STDBOOL_H]) - AC_REQUIRE([gl_TIMESPEC]) - - dnl Prerequisites of lib/getdate.y. - AC_REQUIRE([gl_BISON]) - AC_REQUIRE([gl_C_COMPOUND_LITERALS]) - AC_STRUCT_TIMEZONE - AC_REQUIRE([gl_CLOCK_TIME]) - AC_REQUIRE([gl_TM_GMTOFF]) - AC_COMPILE_IFELSE( - [AC_LANG_SOURCE([[ -#include /* for time_t */ -#include /* for CHAR_BIT, LONG_MIN, LONG_MAX */ -#define TYPE_MINIMUM(t) \ - ((t) ((t) 0 < (t) -1 ? (t) 0 : ~ (t) 0 << (sizeof (t) * CHAR_BIT - 1))) -#define TYPE_MAXIMUM(t) \ - ((t) ((t) 0 < (t) -1 ? (t) -1 : ~ (~ (t) 0 << (sizeof (t) * CHAR_BIT - 1)))) -typedef int verify_min[2 * (LONG_MIN <= TYPE_MINIMUM (time_t)) - 1]; -typedef int verify_max[2 * (TYPE_MAXIMUM (time_t) <= LONG_MAX) - 1]; - ]])], - [AC_DEFINE([TIME_T_FITS_IN_LONG_INT], [1], - [Define to 1 if all 'time_t' values fit in a 'long int'.]) - ]) -]) diff --git a/modules/get_date b/modules/get_date new file mode 100644 index 0000000000..fda965f9a9 --- /dev/null +++ b/modules/get_date @@ -0,0 +1,52 @@ +Description: +Convert a date/time string to linear time. + +Files: +doc/getdate.texi +lib/getdate.h +lib/get_date.y +m4/bison.m4 +m4/tm_gmtoff.m4 +m4/get_date.m4 + +Depends-on: +c-ctype +stdbool +gettime +intprops +mktime +setenv +unsetenv +time +verify +xalloc + +configure.ac: +gl_GET_DATE + +Makefile.am: +# This rule overrides the Automake generated .y.c rule, to ensure that the +# get_date.c file gets generated in the source directory, not in the build +# directory. +get_date.c: get_date.y + $(AM_V_GEN)$(SHELL) $(YLWRAP) $(srcdir)/get_date.y \ + y.tab.c get_date.c \ + y.tab.h getdate.h \ + y.output get_date.output \ + -- $(YACC) $(YFLAGS) $(AM_YFLAGS) && \ + mv get_date.c get_date.c-t && \ + mv get_date.c-t $(srcdir)/get_date.c +lib_SOURCES += get_date.y +BUILT_SOURCES += get_date.c +MOSTLYCLEANFILES += get_date.c-t +MAINTAINERCLEANFILES += get_date.c +EXTRA_DIST += get_date.c + +Include: +"getdate.h" + +License: +GPL + +Maintainer: +Paul Eggert diff --git a/modules/get_date-tests b/modules/get_date-tests new file mode 100644 index 0000000000..cb96ff6e1d --- /dev/null +++ b/modules/get_date-tests @@ -0,0 +1,14 @@ +Files: +tests/test-get_date.c +tests/macros.h + +Depends-on: +progname +setenv + +configure.ac: + +Makefile.am: +TESTS += test-get_date +check_PROGRAMS += test-get_date +test_get_date_LDADD = $(LDADD) @LIBINTL@ $(LIB_CLOCK_GETTIME) diff --git a/modules/getdate b/modules/getdate index 2f0fdb279c..2f23036151 100644 --- a/modules/getdate +++ b/modules/getdate @@ -1,49 +1,22 @@ Description: Convert a date/time string to linear time. +Status: +obsolete + +Notice: +This module is obsolete. Use the module 'get_date' instead. + Files: -doc/getdate.texi -lib/getdate.h -lib/getdate.y -m4/bison.m4 -m4/tm_gmtoff.m4 -m4/getdate.m4 Depends-on: -c-ctype -stdbool -gettime -intprops -mktime -setenv -unsetenv -time -verify -xalloc +get_date configure.ac: -gl_GETDATE Makefile.am: -# This rule overrides the Automake generated .y.c rule, to ensure that the -# getdate.c file gets generated in the source directory, not in the build -# directory. -getdate.c: getdate.y - $(AM_V_GEN)$(SHELL) $(YLWRAP) $(srcdir)/getdate.y \ - y.tab.c getdate.c \ - y.tab.h getdate.h \ - y.output getdate.output \ - -- $(YACC) $(YFLAGS) $(AM_YFLAGS) && \ - mv getdate.c getdate.c-t && \ - mv getdate.c-t $(srcdir)/getdate.c -lib_SOURCES += getdate.y -BUILT_SOURCES += getdate.c -MOSTLYCLEANFILES += getdate.c-t -MAINTAINERCLEANFILES += getdate.c -EXTRA_DIST += getdate.c Include: -"getdate.h" License: GPL diff --git a/modules/getdate-tests b/modules/getdate-tests deleted file mode 100644 index ff2945db05..0000000000 --- a/modules/getdate-tests +++ /dev/null @@ -1,14 +0,0 @@ -Files: -tests/test-getdate.c -tests/macros.h - -Depends-on: -progname -setenv - -configure.ac: - -Makefile.am: -TESTS += test-getdate -check_PROGRAMS += test-getdate -test_getdate_LDADD = $(LDADD) @LIBINTL@ $(LIB_CLOCK_GETTIME) diff --git a/tests/test-get_date.c b/tests/test-get_date.c new file mode 100644 index 0000000000..5f7095c5c9 --- /dev/null +++ b/tests/test-get_date.c @@ -0,0 +1,255 @@ +/* Test of getdate() function. + Copyright (C) 2008, 2009, 2010 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, or (at your option) + any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software Foundation, + Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ + +/* Written by Simon Josefsson , 2008. */ + +#include + +#include "getdate.h" + +#include +#include +#include + +#include "progname.h" +#include "macros.h" + +#ifdef DEBUG +#define LOG(str, now, res) \ + printf ("string `%s' diff %d %d\n", \ + str, res.tv_sec - now.tv_sec, res.tv_nsec - now.tv_nsec); +#else +#define LOG(str, now, res) (void) 0 +#endif + +static const char* const day_table[] = +{ + "SUNDAY", + "MONDAY", + "TUESDAY", + "WEDNESDAY", + "THURSDAY", + "FRIDAY", + "SATURDAY", + NULL +}; + +int +main (int argc _GL_UNUSED, char **argv) +{ + struct timespec result; + struct timespec result2; + struct timespec now; + const char *p; + int i; + + set_program_name (argv[0]); + + now.tv_sec = 4711; + now.tv_nsec = 1267; + p = "now"; + ASSERT (get_date (&result, p, &now)); + LOG (p, now, result); + ASSERT (now.tv_sec == result.tv_sec && now.tv_nsec == result.tv_nsec); + + now.tv_sec = 4711; + now.tv_nsec = 1267; + p = "tomorrow"; + ASSERT (get_date (&result, p, &now)); + LOG (p, now, result); + ASSERT (now.tv_sec + 24 * 60 * 60 == result.tv_sec + && now.tv_nsec == result.tv_nsec); + + now.tv_sec = 4711; + now.tv_nsec = 1267; + p = "yesterday"; + ASSERT (get_date (&result, p, &now)); + LOG (p, now, result); + ASSERT (now.tv_sec - 24 * 60 * 60 == result.tv_sec + && now.tv_nsec == result.tv_nsec); + + now.tv_sec = 4711; + now.tv_nsec = 1267; + p = "4 hours"; + ASSERT (get_date (&result, p, &now)); + LOG (p, now, result); + ASSERT (now.tv_sec + 4 * 60 * 60 == result.tv_sec + && now.tv_nsec == result.tv_nsec); + + /* test if timezone is not being ignored for day offset */ + now.tv_sec = 4711; + now.tv_nsec = 1267; + p = "UTC+400 +24 hours"; + ASSERT (get_date (&result, p, &now)); + LOG (p, now, result); + p = "UTC+400 +1 day"; + ASSERT (get_date (&result2, p, &now)); + LOG (p, now, result2); + ASSERT (result.tv_sec == result2.tv_sec + && result.tv_nsec == result2.tv_nsec); + + /* test if several time zones formats are handled same way */ + now.tv_sec = 4711; + now.tv_nsec = 1267; + p = "UTC+14:00"; + ASSERT (get_date (&result, p, &now)); + LOG (p, now, result); + p = "UTC+14"; + ASSERT (get_date (&result2, p, &now)); + LOG (p, now, result2); + ASSERT (result.tv_sec == result2.tv_sec + && result.tv_nsec == result2.tv_nsec); + p = "UTC+1400"; + ASSERT (get_date (&result2, p, &now)); + LOG (p, now, result2); + ASSERT (result.tv_sec == result2.tv_sec + && result.tv_nsec == result2.tv_nsec); + + now.tv_sec = 4711; + now.tv_nsec = 1267; + p = "UTC-14:00"; + ASSERT (get_date (&result, p, &now)); + LOG (p, now, result); + p = "UTC-14"; + ASSERT (get_date (&result2, p, &now)); + LOG (p, now, result2); + ASSERT (result.tv_sec == result2.tv_sec + && result.tv_nsec == result2.tv_nsec); + p = "UTC-1400"; + ASSERT (get_date (&result2, p, &now)); + LOG (p, now, result2); + ASSERT (result.tv_sec == result2.tv_sec + && result.tv_nsec == result2.tv_nsec); + + now.tv_sec = 4711; + now.tv_nsec = 1267; + p = "UTC+0:15"; + ASSERT (get_date (&result, p, &now)); + LOG (p, now, result); + p = "UTC+0015"; + ASSERT (get_date (&result2, p, &now)); + LOG (p, now, result2); + ASSERT (result.tv_sec == result2.tv_sec + && result.tv_nsec == result2.tv_nsec); + + now.tv_sec = 4711; + now.tv_nsec = 1267; + p = "UTC-1:30"; + ASSERT (get_date (&result, p, &now)); + LOG (p, now, result); + p = "UTC-130"; + ASSERT (get_date (&result2, p, &now)); + LOG (p, now, result2); + ASSERT (result.tv_sec == result2.tv_sec + && result.tv_nsec == result2.tv_nsec); + + + /* TZ out of range should cause get_date failure */ + now.tv_sec = 4711; + now.tv_nsec = 1267; + p = "UTC+25:00"; + ASSERT (!get_date (&result, p, &now)); + + /* Check for several invalid countable dayshifts */ + now.tv_sec = 4711; + now.tv_nsec = 1267; + p = "UTC+4:00 +40 yesterday"; + ASSERT (!get_date (&result, p, &now)); + p = "UTC+4:00 next yesterday"; + ASSERT (!get_date (&result, p, &now)); + p = "UTC+4:00 tomorrow ago"; + ASSERT (!get_date (&result, p, &now)); + p = "UTC+4:00 40 now ago"; + ASSERT (!get_date (&result, p, &now)); + p = "UTC+4:00 last tomorrow"; + ASSERT (!get_date (&result, p, &now)); + p = "UTC+4:00 -4 today"; + ASSERT (!get_date (&result, p, &now)); + + /* And check correct usage of dayshifts */ + now.tv_sec = 4711; + now.tv_nsec = 1267; + p = "UTC+400 tomorrow"; + ASSERT (get_date (&result, p, &now)); + LOG (p, now, result); + p = "UTC+400 +1 day"; + ASSERT (get_date (&result2, p, &now)); + LOG (p, now, result2); + ASSERT (result.tv_sec == result2.tv_sec + && result.tv_nsec == result2.tv_nsec); + now.tv_sec = 4711; + now.tv_nsec = 1267; + p = "UTC+400 yesterday"; + ASSERT (get_date (&result, p, &now)); + LOG (p, now, result); + p = "UTC+400 1 day ago"; + ASSERT (get_date (&result2, p, &now)); + LOG (p, now, result2); + ASSERT (result.tv_sec == result2.tv_sec + && result.tv_nsec == result2.tv_nsec); + now.tv_sec = 4711; + now.tv_nsec = 1267; + p = "UTC+400 now"; + ASSERT (get_date (&result, p, &now)); + LOG (p, now, result); + p = "UTC+400 +0 minutes"; /* silly, but simple "UTC+400" is different*/ + ASSERT (get_date (&result2, p, &now)); + LOG (p, now, result2); + ASSERT (result.tv_sec == result2.tv_sec + && result.tv_nsec == result2.tv_nsec); + + /* Check that some "next Monday", "last Wednesday", etc. are correct. */ + setenv ("TZ", "UTC0", 1); + for (i = 0; day_table[i]; i++) + { + unsigned int thur2 = 7 * 24 * 3600; /* 2nd thursday */ + char tmp[32]; + sprintf (tmp, "NEXT %s", day_table[i]); + now.tv_sec = thur2 + 4711; + now.tv_nsec = 1267; + ASSERT (get_date (&result, tmp, &now)); + LOG (tmp, now, result); + ASSERT (result.tv_nsec == 0); + ASSERT (result.tv_sec == thur2 + (i == 4 ? 7 : (i + 3) % 7) * 24 * 3600); + + sprintf (tmp, "LAST %s", day_table[i]); + now.tv_sec = thur2 + 4711; + now.tv_nsec = 1267; + ASSERT (get_date (&result, tmp, &now)); + LOG (tmp, now, result); + ASSERT (result.tv_nsec == 0); + ASSERT (result.tv_sec == thur2 + ((i + 3) % 7 - 7) * 24 * 3600); + } + + p = "THURSDAY UTC+00"; /* The epoch was on Thursday. */ + now.tv_sec = 0; + now.tv_nsec = 0; + ASSERT (get_date (&result, p, &now)); + LOG (p, now, result); + ASSERT (result.tv_sec == now.tv_sec + && result.tv_nsec == now.tv_nsec); + + p = "FRIDAY UTC+00"; + now.tv_sec = 0; + now.tv_nsec = 0; + ASSERT (get_date (&result, p, &now)); + LOG (p, now, result); + ASSERT (result.tv_sec == 24 * 3600 + && result.tv_nsec == now.tv_nsec); + + return 0; +} diff --git a/tests/test-getdate.c b/tests/test-getdate.c deleted file mode 100644 index 5f7095c5c9..0000000000 --- a/tests/test-getdate.c +++ /dev/null @@ -1,255 +0,0 @@ -/* Test of getdate() function. - Copyright (C) 2008, 2009, 2010 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, or (at your option) - any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software Foundation, - Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ - -/* Written by Simon Josefsson , 2008. */ - -#include - -#include "getdate.h" - -#include -#include -#include - -#include "progname.h" -#include "macros.h" - -#ifdef DEBUG -#define LOG(str, now, res) \ - printf ("string `%s' diff %d %d\n", \ - str, res.tv_sec - now.tv_sec, res.tv_nsec - now.tv_nsec); -#else -#define LOG(str, now, res) (void) 0 -#endif - -static const char* const day_table[] = -{ - "SUNDAY", - "MONDAY", - "TUESDAY", - "WEDNESDAY", - "THURSDAY", - "FRIDAY", - "SATURDAY", - NULL -}; - -int -main (int argc _GL_UNUSED, char **argv) -{ - struct timespec result; - struct timespec result2; - struct timespec now; - const char *p; - int i; - - set_program_name (argv[0]); - - now.tv_sec = 4711; - now.tv_nsec = 1267; - p = "now"; - ASSERT (get_date (&result, p, &now)); - LOG (p, now, result); - ASSERT (now.tv_sec == result.tv_sec && now.tv_nsec == result.tv_nsec); - - now.tv_sec = 4711; - now.tv_nsec = 1267; - p = "tomorrow"; - ASSERT (get_date (&result, p, &now)); - LOG (p, now, result); - ASSERT (now.tv_sec + 24 * 60 * 60 == result.tv_sec - && now.tv_nsec == result.tv_nsec); - - now.tv_sec = 4711; - now.tv_nsec = 1267; - p = "yesterday"; - ASSERT (get_date (&result, p, &now)); - LOG (p, now, result); - ASSERT (now.tv_sec - 24 * 60 * 60 == result.tv_sec - && now.tv_nsec == result.tv_nsec); - - now.tv_sec = 4711; - now.tv_nsec = 1267; - p = "4 hours"; - ASSERT (get_date (&result, p, &now)); - LOG (p, now, result); - ASSERT (now.tv_sec + 4 * 60 * 60 == result.tv_sec - && now.tv_nsec == result.tv_nsec); - - /* test if timezone is not being ignored for day offset */ - now.tv_sec = 4711; - now.tv_nsec = 1267; - p = "UTC+400 +24 hours"; - ASSERT (get_date (&result, p, &now)); - LOG (p, now, result); - p = "UTC+400 +1 day"; - ASSERT (get_date (&result2, p, &now)); - LOG (p, now, result2); - ASSERT (result.tv_sec == result2.tv_sec - && result.tv_nsec == result2.tv_nsec); - - /* test if several time zones formats are handled same way */ - now.tv_sec = 4711; - now.tv_nsec = 1267; - p = "UTC+14:00"; - ASSERT (get_date (&result, p, &now)); - LOG (p, now, result); - p = "UTC+14"; - ASSERT (get_date (&result2, p, &now)); - LOG (p, now, result2); - ASSERT (result.tv_sec == result2.tv_sec - && result.tv_nsec == result2.tv_nsec); - p = "UTC+1400"; - ASSERT (get_date (&result2, p, &now)); - LOG (p, now, result2); - ASSERT (result.tv_sec == result2.tv_sec - && result.tv_nsec == result2.tv_nsec); - - now.tv_sec = 4711; - now.tv_nsec = 1267; - p = "UTC-14:00"; - ASSERT (get_date (&result, p, &now)); - LOG (p, now, result); - p = "UTC-14"; - ASSERT (get_date (&result2, p, &now)); - LOG (p, now, result2); - ASSERT (result.tv_sec == result2.tv_sec - && result.tv_nsec == result2.tv_nsec); - p = "UTC-1400"; - ASSERT (get_date (&result2, p, &now)); - LOG (p, now, result2); - ASSERT (result.tv_sec == result2.tv_sec - && result.tv_nsec == result2.tv_nsec); - - now.tv_sec = 4711; - now.tv_nsec = 1267; - p = "UTC+0:15"; - ASSERT (get_date (&result, p, &now)); - LOG (p, now, result); - p = "UTC+0015"; - ASSERT (get_date (&result2, p, &now)); - LOG (p, now, result2); - ASSERT (result.tv_sec == result2.tv_sec - && result.tv_nsec == result2.tv_nsec); - - now.tv_sec = 4711; - now.tv_nsec = 1267; - p = "UTC-1:30"; - ASSERT (get_date (&result, p, &now)); - LOG (p, now, result); - p = "UTC-130"; - ASSERT (get_date (&result2, p, &now)); - LOG (p, now, result2); - ASSERT (result.tv_sec == result2.tv_sec - && result.tv_nsec == result2.tv_nsec); - - - /* TZ out of range should cause get_date failure */ - now.tv_sec = 4711; - now.tv_nsec = 1267; - p = "UTC+25:00"; - ASSERT (!get_date (&result, p, &now)); - - /* Check for several invalid countable dayshifts */ - now.tv_sec = 4711; - now.tv_nsec = 1267; - p = "UTC+4:00 +40 yesterday"; - ASSERT (!get_date (&result, p, &now)); - p = "UTC+4:00 next yesterday"; - ASSERT (!get_date (&result, p, &now)); - p = "UTC+4:00 tomorrow ago"; - ASSERT (!get_date (&result, p, &now)); - p = "UTC+4:00 40 now ago"; - ASSERT (!get_date (&result, p, &now)); - p = "UTC+4:00 last tomorrow"; - ASSERT (!get_date (&result, p, &now)); - p = "UTC+4:00 -4 today"; - ASSERT (!get_date (&result, p, &now)); - - /* And check correct usage of dayshifts */ - now.tv_sec = 4711; - now.tv_nsec = 1267; - p = "UTC+400 tomorrow"; - ASSERT (get_date (&result, p, &now)); - LOG (p, now, result); - p = "UTC+400 +1 day"; - ASSERT (get_date (&result2, p, &now)); - LOG (p, now, result2); - ASSERT (result.tv_sec == result2.tv_sec - && result.tv_nsec == result2.tv_nsec); - now.tv_sec = 4711; - now.tv_nsec = 1267; - p = "UTC+400 yesterday"; - ASSERT (get_date (&result, p, &now)); - LOG (p, now, result); - p = "UTC+400 1 day ago"; - ASSERT (get_date (&result2, p, &now)); - LOG (p, now, result2); - ASSERT (result.tv_sec == result2.tv_sec - && result.tv_nsec == result2.tv_nsec); - now.tv_sec = 4711; - now.tv_nsec = 1267; - p = "UTC+400 now"; - ASSERT (get_date (&result, p, &now)); - LOG (p, now, result); - p = "UTC+400 +0 minutes"; /* silly, but simple "UTC+400" is different*/ - ASSERT (get_date (&result2, p, &now)); - LOG (p, now, result2); - ASSERT (result.tv_sec == result2.tv_sec - && result.tv_nsec == result2.tv_nsec); - - /* Check that some "next Monday", "last Wednesday", etc. are correct. */ - setenv ("TZ", "UTC0", 1); - for (i = 0; day_table[i]; i++) - { - unsigned int thur2 = 7 * 24 * 3600; /* 2nd thursday */ - char tmp[32]; - sprintf (tmp, "NEXT %s", day_table[i]); - now.tv_sec = thur2 + 4711; - now.tv_nsec = 1267; - ASSERT (get_date (&result, tmp, &now)); - LOG (tmp, now, result); - ASSERT (result.tv_nsec == 0); - ASSERT (result.tv_sec == thur2 + (i == 4 ? 7 : (i + 3) % 7) * 24 * 3600); - - sprintf (tmp, "LAST %s", day_table[i]); - now.tv_sec = thur2 + 4711; - now.tv_nsec = 1267; - ASSERT (get_date (&result, tmp, &now)); - LOG (tmp, now, result); - ASSERT (result.tv_nsec == 0); - ASSERT (result.tv_sec == thur2 + ((i + 3) % 7 - 7) * 24 * 3600); - } - - p = "THURSDAY UTC+00"; /* The epoch was on Thursday. */ - now.tv_sec = 0; - now.tv_nsec = 0; - ASSERT (get_date (&result, p, &now)); - LOG (p, now, result); - ASSERT (result.tv_sec == now.tv_sec - && result.tv_nsec == now.tv_nsec); - - p = "FRIDAY UTC+00"; - now.tv_sec = 0; - now.tv_nsec = 0; - ASSERT (get_date (&result, p, &now)); - LOG (p, now, result); - ASSERT (result.tv_sec == 24 * 3600 - && result.tv_nsec == now.tv_nsec); - - return 0; -}