+++ /dev/null
-/* $NetBSD: localtime.c,v 1.72 2012/10/28 19:02:29 christos Exp $ */
-
-/* Don't reformat the code arbitrarily.
-
- It uses in wide parts the exact formatting as the upstream NetBSD
- versions. The purpose is to simplify subsequent diffs to the NetBSD
- version, should the need arise again at one point. */
-
-/*
-** This file is in the public domain, so clarified as of
-** 1996-06-05 by Arthur David Olson.
-*/
-/* Temporarily merged private.h and tzfile.h for ease of management - DJ */
-
-#include "winsup.h"
-#include "cygerrno.h"
-#include "sync.h"
-#include <ctype.h>
-#define STD_INSPIRED
-#define lint
-
-#define USG_COMPAT
-
-#ifndef lint
-#ifndef NOID
-static char elsieid[] = "@(#)localtime.c 8.17";
-#endif /* !defined NOID */
-#endif /* !defined lint */
-
-/*
-** Leap second handling from Bradley White.
-** POSIX-style TZ environment variable handling from Guy Harris.
-*/
-
-#define NO_ERROR_IN_DST_GAP
-
-/*LINTLIBRARY*/
-
-#ifndef PRIVATE_H
-
-#define PRIVATE_H
-
-/*
-** This file is in the public domain, so clarified as of
-** 1996-06-05 by Arthur David Olson
-*/
-
-/*
-** This header is for use ONLY with the time conversion code.
-** There is no guarantee that it will remain unchanged,
-** or that it will remain at all.
-** Do NOT copy it to any system include directory.
-** Thank you!
-*/
-
-/*
-** ID
-*/
-
-#ifndef lint
-#ifndef NOID
-static char privatehid[] = "@(#)private.h 7.48";
-#endif /* !defined NOID */
-#endif /* !defined lint */
-
-/*
-** Nested includes
-*/
-
-#include "stdio.h"
-#include "limits.h" /* for CHAR_BIT */
-#include "stdlib.h"
-#include "unistd.h" /* for F_OK and R_OK */
-
-/* Unlike <ctype.h>'s isdigit, this also works if c < 0 | c > UCHAR_MAX. */
-#define is_digit(c) ((unsigned)(c) - '0' <= 9)
-
-#ifndef __pure
-#if 2 < __GNUC__ || (__GNUC__ == 2 && 96 <= __GNUC_MINOR__)
-# define __pure __attribute__ ((__pure__))
-#else
-# define __pure /* empty */
-#endif
-#endif
-
-/*
-** Finally, some convenience items.
-*/
-
-#ifndef TYPE_INTEGRAL
-#define TYPE_INTEGRAL(type) (/*CONSTCOND*/((type) 0.5) != 0.5)
-#endif /* !defined TYPE_INTEGRAL */
-
-#ifndef TYPE_BIT
-#define TYPE_BIT(type) (sizeof (type) * CHAR_BIT)
-#endif /* !defined TYPE_BIT */
-
-#ifndef TYPE_SIGNED
-#define TYPE_SIGNED(type) (((type) -1) < 0)
-#endif /* !defined TYPE_SIGNED */
-
-#ifndef INT_STRLEN_MAXIMUM
-/*
-** 302 / 1000 is log10(2.0) rounded up.
-** Subtract one for the sign bit if the type is signed;
-** add one for integer division truncation;
-** add one more for a minus sign if the type is signed.
-*/
-#define INT_STRLEN_MAXIMUM(type) \
- ((TYPE_BIT(type) - TYPE_SIGNED(type)) * 302 / 1000 + 1 + TYPE_SIGNED(type))
-#endif /* !defined INT_STRLEN_MAXIMUM */
-
-/*
-** INITIALIZE(x)
-*/
-
-#ifndef GNUC_or_lint
-#ifdef lint
-#define GNUC_or_lint
-#endif /* defined lint */
-#ifndef lint
-#ifdef __GNUC__
-#define GNUC_or_lint
-#endif /* defined __GNUC__ */
-#endif /* !defined lint */
-#endif /* !defined GNUC_or_lint */
-
-#ifndef INITIALIZE
-#ifdef GNUC_or_lint
-#define INITIALIZE(x) ((x) = 0)
-#endif /* defined GNUC_or_lint */
-#ifndef GNUC_or_lint
-#define INITIALIZE(x)
-#endif /* !defined GNUC_or_lint */
-#endif /* !defined INITIALIZE */
-
-#ifndef TZ_DOMAIN
-#define TZ_DOMAIN "tz"
-#endif /* !defined TZ_DOMAIN */
-
-#ifndef YEARSPERREPEAT
-#define YEARSPERREPEAT 400 /* years before a Gregorian repeat */
-#endif /* !defined YEARSPERREPEAT */
-
-/*
-** The Gregorian year averages 365.2425 days, which is 31556952 seconds.
-*/
-
-#ifndef AVGSECSPERYEAR
-#define AVGSECSPERYEAR 31556952L
-#endif /* !defined AVGSECSPERYEAR */
-
-#ifndef SECSPERREPEAT
-#define SECSPERREPEAT ((int_fast64_t) YEARSPERREPEAT * (int_fast64_t) AVGSECSPERYEAR)
-#endif /* !defined SECSPERREPEAT */
-
-#ifndef SECSPERREPEAT_BITS
-#define SECSPERREPEAT_BITS 34 /* ceil(log2(SECSPERREPEAT)) */
-#endif /* !defined SECSPERREPEAT_BITS */
-
-/*
-** UNIX was a registered trademark of UNIX System Laboratories in 1993.
-*/
-
-#endif /* !defined PRIVATE_H */
-
-#ifndef TZFILE_H
-
-#define TZFILE_H
-
-/*
-** This file is in the public domain, so clarified as of
-** 1996-06-05 by Arthur David Olson.
-*/
-
-/*
-** This header is for use ONLY with the time conversion code.
-** There is no guarantee that it will remain unchanged,
-** or that it will remain at all.
-** Do NOT copy it to any system include directory.
-** Thank you!
-*/
-
-/*
-** ID
-*/
-
-#ifndef lint
-#ifndef NOID
-static char tzfilehid[] = "@(#)tzfile.h 7.14";
-#endif /* !defined NOID */
-#endif /* !defined lint */
-
-/*
-** Information about time zone files.
-*/
-
-#ifndef TZDIR
-#define TZDIR "/usr/share/zoneinfo" /* Time zone object file directory */
-#endif /* !defined TZDIR */
-
-#ifndef TZDEFAULT
-#define TZDEFAULT "localtime"
-#endif /* !defined TZDEFAULT */
-
-#ifndef TZDEFRULES
-#define TZDEFRULES "posixrules"
-#endif /* !defined TZDEFRULES */
-
-/*
-** Each file begins with. . .
-*/
-
-#define TZ_MAGIC "TZif"
-
-struct tzhead {
- char tzh_magic[4]; /* TZ_MAGIC */
- char tzh_version[1]; /* '\0' or '2' as of 2005 */
- char tzh_reserved[15]; /* reserved for future use */
- char tzh_ttisgmtcnt[4]; /* coded number of trans. time flags */
- char tzh_ttisstdcnt[4]; /* coded number of trans. time flags */
- char tzh_leapcnt[4]; /* coded number of leap seconds */
- char tzh_timecnt[4]; /* coded number of transition times */
- char tzh_typecnt[4]; /* coded number of local time types */
- char tzh_charcnt[4]; /* coded number of abbr. chars */
-};
-
-/*
-** . . .followed by. . .
-**
-** tzh_timecnt (char [4])s coded transition times a la time(2)
-** tzh_timecnt (unsigned char)s types of local time starting at above
-** tzh_typecnt repetitions of
-** one (char [4]) coded UTC offset in seconds
-** one (unsigned char) used to set tm_isdst
-** one (unsigned char) that's an abbreviation list index
-** tzh_charcnt (char)s '\0'-terminated zone abbreviations
-** tzh_leapcnt repetitions of
-** one (char [4]) coded leap second transition times
-** one (char [4]) total correction after above
-** tzh_ttisstdcnt (char)s indexed by type; if TRUE, transition
-** time is standard time, if FALSE,
-** transition time is wall clock time
-** if absent, transition times are
-** assumed to be wall clock time
-** tzh_ttisgmtcnt (char)s indexed by type; if TRUE, transition
-** time is UTC, if FALSE,
-** transition time is local time
-** if absent, transition times are
-** assumed to be local time
-*/
-
-/*
-** If tzh_version is '2' or greater, the above is followed by a second instance
-** of tzhead and a second instance of the data in which each coded transition
-** time uses 8 rather than 4 chars,
-** then a POSIX-TZ-environment-variable-style string for use in handling
-** instants after the last transition time stored in the file
-** (with nothing between the newlines if there is no POSIX representation for
-** such instants).
-*/
-
-/*
-** In the current implementation, "tzset()" refuses to deal with files that
-** exceed any of the limits below.
-*/
-
-#ifndef TZ_MAX_TIMES
-/*
-** The TZ_MAX_TIMES value below is enough to handle a bit more than a
-** year's worth of solar time (corrected daily to the nearest second) or
-** 138 years of Pacific Presidential Election time
-** (where there are three time zone transitions every fourth year).
-*/
-#define TZ_MAX_TIMES 1200
-#endif /* !defined TZ_MAX_TIMES */
-
-#ifndef TZ_MAX_TYPES
-#ifndef NOSOLAR
-#define TZ_MAX_TYPES 256 /* Limited by what (unsigned char)'s can hold */
-#endif /* !defined NOSOLAR */
-#ifdef NOSOLAR
-/*
-** Must be at least 14 for Europe/Riga as of Jan 12 1995,
-** as noted by Earl Chew.
-*/
-#define TZ_MAX_TYPES 20 /* Maximum number of local time types */
-#endif /* !defined NOSOLAR */
-#endif /* !defined TZ_MAX_TYPES */
-
-#ifndef TZ_MAX_CHARS
-#define TZ_MAX_CHARS 50 /* Maximum number of abbreviation characters */
- /* (limited by what unsigned chars can hold) */
-#endif /* !defined TZ_MAX_CHARS */
-
-#ifndef TZ_MAX_LEAPS
-#define TZ_MAX_LEAPS 50 /* Maximum number of leap second corrections */
-#endif /* !defined TZ_MAX_LEAPS */
-
-#define SECSPERMIN 60
-#define MINSPERHOUR 60
-#define HOURSPERDAY 24
-#define DAYSPERWEEK 7
-#define DAYSPERNYEAR 365
-#define DAYSPERLYEAR 366
-#define SECSPERHOUR (SECSPERMIN * MINSPERHOUR)
-#define SECSPERDAY ((long) SECSPERHOUR * HOURSPERDAY)
-#define MONSPERYEAR 12
-
-#define TM_SUNDAY 0
-#define TM_MONDAY 1
-#define TM_TUESDAY 2
-#define TM_WEDNESDAY 3
-#define TM_THURSDAY 4
-#define TM_FRIDAY 5
-#define TM_SATURDAY 6
-
-#define TM_JANUARY 0
-#define TM_FEBRUARY 1
-#define TM_MARCH 2
-#define TM_APRIL 3
-#define TM_MAY 4
-#define TM_JUNE 5
-#define TM_JULY 6
-#define TM_AUGUST 7
-#define TM_SEPTEMBER 8
-#define TM_OCTOBER 9
-#define TM_NOVEMBER 10
-#define TM_DECEMBER 11
-
-#define TM_YEAR_BASE 1900
-
-#define EPOCH_YEAR 1970
-#define EPOCH_WDAY TM_THURSDAY
-
-/*
-** Accurate only for the past couple of centuries;
-** that will probably do.
-*/
-
-#define isleap(y) (((y) % 4) == 0 && (((y) % 100) != 0 || ((y) % 400) == 0))
-
-#endif /* !defined TZFILE_H */
-
-#include "fcntl.h"
-
-#ifdef __TM_GMTOFF
-# define TM_GMTOFF __TM_GMTOFF
-#endif
-#ifdef __TM_ZONE
-# define TM_ZONE __TM_ZONE
-#endif
-
-/*
-** SunOS 4.1.1 headers lack O_BINARY.
-*/
-
-#ifdef O_BINARY
-#define OPEN_MODE (O_RDONLY | O_BINARY)
-#endif /* defined O_BINARY */
-#ifndef O_BINARY
-#define OPEN_MODE O_RDONLY
-#endif /* !defined O_BINARY */
-
-#ifndef WILDABBR
-/*
-** Someone might make incorrect use of a time zone abbreviation:
-** 1. They might reference tzname[0] before calling tzset (explicitly
-** or implicitly).
-** 2. They might reference tzname[1] before calling tzset (explicitly
-** or implicitly).
-** 3. They might reference tzname[1] after setting to a time zone
-** in which Daylight Saving Time is never observed.
-** 4. They might reference tzname[0] after setting to a time zone
-** in which Standard Time is never observed.
-** 5. They might reference tm.TM_ZONE after calling offtime.
-** What's best to do in the above cases is open to debate;
-** for now, we just set things up so that in any of the five cases
-** WILDABBR is used. Another possibility: initialize tzname[0] to the
-** string "tzname[0] used before set", and similarly for the other cases.
-** And another: initialize tzname[0] to "ERA", with an explanation in the
-** manual page of what this "time zone abbreviation" means (doing this so
-** that tzname[0] has the "normal" length of three characters).
-*/
-#define WILDABBR " "
-#endif /* !defined WILDABBR */
-
-static const char wildabbr[] = WILDABBR;
-
-static const char gmt[] = "GMT";
-
-/*
-** The DST rules to use if TZ has no rules and we can't load TZDEFRULES.
-** We default to US rules as of 1999-08-17.
-** POSIX 1003.1 section 8.1.1 says that the default DST rules are
-** implementation dependent; for historical reasons, US rules are a
-** common default.
-*/
-#ifndef TZDEFRULESTRING
-#define TZDEFRULESTRING ",M4.1.0,M10.5.0"
-#endif /* !defined TZDEFDST */
-
-struct ttinfo { /* time type information */
- long tt_gmtoff; /* UTC offset in seconds */
- int tt_isdst; /* used to set tm_isdst */
- int tt_abbrind; /* abbreviation list index */
- int tt_ttisstd; /* TRUE if transition is std time */
- int tt_ttisgmt; /* TRUE if transition is UTC */
-};
-
-struct lsinfo { /* leap second information */
- time_t ls_trans; /* transition time */
- long ls_corr; /* correction to apply */
-};
-
-#define BIGGEST(a, b) (((a) > (b)) ? (a) : (b))
-
-#ifdef TZNAME_MAX
-#define MY_TZNAME_MAX TZNAME_MAX
-#endif /* defined TZNAME_MAX */
-#ifndef TZNAME_MAX
-#define MY_TZNAME_MAX 255
-#endif /* !defined TZNAME_MAX */
-
-struct __state {
- int leapcnt;
- int timecnt;
- int typecnt;
- int charcnt;
- int goback;
- int goahead;
- time_t ats[TZ_MAX_TIMES];
- unsigned char types[TZ_MAX_TIMES];
- struct ttinfo ttis[TZ_MAX_TYPES];
- char chars[/*CONSTCOND*/BIGGEST(BIGGEST(TZ_MAX_CHARS + 1,
- sizeof gmt), (2 * (MY_TZNAME_MAX + 1)))];
- struct lsinfo lsis[TZ_MAX_LEAPS];
-};
-
-typedef struct __state *timezone_t;
-
-struct rule {
- int r_type; /* type of rule--see below */
- int r_day; /* day number of rule */
- int r_week; /* week number of rule */
- int r_mon; /* month number of rule */
- long r_time; /* transition time of rule */
-};
-
-#define JULIAN_DAY 0 /* Jn - Julian day */
-#define DAY_OF_YEAR 1 /* n - day of year */
-#define MONTH_NTH_DAY_OF_WEEK 2 /* Mm.n.d - month, week, day of week */
-
-typedef struct tm *(*subfun_t)(const timezone_t sp, const time_t *timep,
- long offset, struct tm *tmp);
-
-/*
-** Prototypes for static functions.
-*/
-
-static long detzcode(const char * codep);
-static time_t detzcode64(const char * codep);
-static int differ_by_repeat(time_t t1, time_t t0);
-static const char * getzname(const char * strp) __pure;
-static const char * getqzname(const char * strp, const int delim) __pure;
-static const char * getnum(const char * strp, int * nump, int min,
- int max);
-static const char * getsecs(const char * strp, long * secsp);
-static const char * getoffset(const char * strp, long * offsetp);
-static const char * getrule(const char * strp, struct rule * rulep);
-static void gmtload(timezone_t sp);
-static struct tm * gmtsub(const timezone_t sp, const time_t *timep,
- long offset, struct tm * tmp);
-static struct tm * localsub(const timezone_t sp, const time_t *timep,
- long offset, struct tm *tmp);
-static int increment_overflow(int * number, int delta);
-static int leaps_thru_end_of(int y) __pure;
-static int long_increment_overflow(long * number, int delta);
-static int long_normalize_overflow(long * tensptr,
- int * unitsptr, int base);
-static int normalize_overflow(int * tensptr, int * unitsptr,
- int base);
-static void settzname(void);
-static time_t time1(const timezone_t sp, struct tm * const tmp,
- subfun_t funcp, const long offset);
-static time_t time2(const timezone_t sp, struct tm * const tmp,
- subfun_t funcp,
- const long offset, int *const okayp);
-static time_t time2sub(const timezone_t sp, struct tm * const tmp,
- subfun_t funcp, const long offset,
- int *const okayp, const int do_norm_secs);
-static struct tm * timesub(const timezone_t sp, const time_t * timep,
- long offset, struct tm * tmp);
-static int tmcomp(const struct tm * atmp,
- const struct tm * btmp);
-static time_t transtime(time_t janfirst, int year,
- const struct rule * rulep, long offset) __pure;
-static int typesequiv(const timezone_t sp, int a, int b);
-static int tzload(timezone_t sp, const char * name,
- int doextend);
-static int tzparse(timezone_t sp, const char * name,
- int lastditch);
-#ifdef __CYGWIN__
-extern "C" void tzset_unlocked(void);
-#else
-static void tzset_unlocked(void);
-#endif
-static long leapcorr(const timezone_t sp, time_t * timep);
-
-static timezone_t lclptr;
-static timezone_t gmtptr;
-
-#ifndef TZ_STRLEN_MAX
-#define TZ_STRLEN_MAX 255
-#endif /* !defined TZ_STRLEN_MAX */
-
-static char lcl_TZname[TZ_STRLEN_MAX + 1];
-static enum lcl_states
-{
- lcl_setting = -1,
- lcl_unset = 0,
- lcl_from_environment = 1,
- lcl_from_default = 2
-} lcl_is_set;
-static int gmt_is_set;
-
-#define tzname _tzname
-#undef _tzname
-
-char * tzname[2] = {
- (char *) wildabbr,
- (char *) wildabbr
-};
-
-/*
-** Section 4.12.3 of X3.159-1989 requires that
-** Except for the strftime function, these functions [asctime,
-** ctime, gmtime, localtime] return values in one of two static
-** objects: a broken-down time structure and an array of char.
-** Thanks to Paul Eggert for noting this.
-*/
-
-static struct tm tm;
-
-/* These variables are initialized by tzset. The macro versions are
- defined in time.h, and indirect through the __imp_ pointers. */
-
-#define timezone _timezone
-#define daylight _daylight
-#undef _timezone
-#undef _daylight
-
-#ifdef USG_COMPAT
-long timezone = 0;
-int daylight;
-#endif /* defined USG_COMPAT */
-
-#ifdef ALTZONE
-time_t altzone = 0;
-#endif /* defined ALTZONE */
-
-static long
-detzcode(const char *const codep)
-{
- long result;
- int i;
-
- result = (codep[0] & 0x80) ? ~0L : 0;
- for (i = 0; i < 4; ++i)
- result = (result << 8) | (codep[i] & 0xff);
- return result;
-}
-
-static time_t
-detzcode64(const char *const codep)
-{
- time_t result;
- int i;
-
- result = (time_t)((codep[0] & 0x80) ? (~(int_fast64_t) 0) : 0);
- for (i = 0; i < 8; ++i)
- result = result * 256 + (codep[i] & 0xff);
- return result;
-}
-
-static void
-settzname (void)
-{
- timezone_t const sp = lclptr;
- int i;
-
- tzname[0] = (char *) wildabbr;
- tzname[1] = (char *) wildabbr;
-#ifdef USG_COMPAT
- daylight = 0;
- timezone = 0;
-#endif /* defined USG_COMPAT */
-#ifdef ALTZONE
- altzone = 0;
-#endif /* defined ALTZONE */
- if (sp == NULL) {
- tzname[0] = tzname[1] = (char *) gmt;
- return;
- }
- for (i = 0; i < sp->typecnt; ++i) {
- const struct ttinfo * const ttisp = &sp->ttis[i];
-
- tzname[ttisp->tt_isdst] =
- &sp->chars[ttisp->tt_abbrind];
-#ifdef USG_COMPAT
- if (ttisp->tt_isdst)
- daylight = 1;
- if (!ttisp->tt_isdst)
- timezone = -(ttisp->tt_gmtoff);
-#endif /* defined USG_COMPAT */
-#ifdef ALTZONE
- if (ttisp->tt_isdst)
- altzone = -(ttisp->tt_gmtoff);
-#endif /* defined ALTZONE */
- }
- /*
- ** And to get the latest zone names into tzname. . .
- */
- for (i = 0; i < sp->timecnt; ++i) {
- const struct ttinfo *const ttisp = &sp->ttis[sp->types[i]];
-
- tzname[ttisp->tt_isdst] =
- &sp->chars[ttisp->tt_abbrind];
- }
-}
-
-#include "tz_posixrules.h"
-
-static int
-differ_by_repeat(const time_t t1, const time_t t0)
-{
- if (TYPE_INTEGRAL(time_t) &&
- TYPE_BIT(time_t) - TYPE_SIGNED(time_t) < SECSPERREPEAT_BITS)
- return 0;
- return (int_fast64_t)t1 - (int_fast64_t)t0 == SECSPERREPEAT;
-}
-
-static int
-tzload(timezone_t sp, const char *name, const int doextend)
-{
- const char * p;
- int i;
- int fid;
- int stored;
- ssize_t nread;
- typedef union {
- struct tzhead tzhead;
- char buf[2 * sizeof(struct tzhead) +
- 2 * sizeof *sp +
- 4 * TZ_MAX_TIMES];
- } u_t;
- u_t * up;
- save_errno save;
-
- up = (u_t *) calloc(1, sizeof *up);
- if (up == NULL)
- return -1;
-
- sp->goback = sp->goahead = FALSE;
- if (name == NULL && (name = TZDEFAULT) == NULL)
- goto oops;
- {
- int doaccess;
- /*
- ** Section 4.9.1 of the C standard says that
- ** "FILENAME_MAX expands to an integral constant expression
- ** that is the size needed for an array of char large enough
- ** to hold the longest file name string that the implementation
- ** guarantees can be opened."
- */
- char fullname[FILENAME_MAX + 1];
-
- if (name[0] == ':')
- ++name;
- doaccess = name[0] == '/';
- if (!doaccess) {
- if ((p = TZDIR) == NULL)
- goto oops;
- if ((strlen(p) + strlen(name) + 1) >= sizeof fullname)
- goto oops;
- (void) strcpy(fullname, p); /* XXX strcpy is safe */
- (void) strcat(fullname, "/"); /* XXX strcat is safe */
- (void) strcat(fullname, name); /* XXX strcat is safe */
- /*
- ** Set doaccess if '.' (as in "../") shows up in name.
- */
- if (strchr(name, '.') != NULL)
- doaccess = TRUE;
- name = fullname;
- }
- if ((doaccess && access(name, R_OK) != 0)
- || (fid = open(name, OPEN_MODE)) == -1)
- {
- const char *base = strrchr(name, '/');
- if (base)
- base++;
- else
- base = name;
- if (strcmp(base, "posixrules"))
- goto oops;
-
- /* We've got a built-in copy of posixrules just in case */
- fid = -2;
- }
- }
- if (fid == -2)
- {
- memcpy(up->buf, _posixrules_data, sizeof (_posixrules_data));
- nread = sizeof (_posixrules_data);
- }
- else
- {
- nread = read(fid, up->buf, sizeof up->buf);
- if (close(fid) < 0 || nread <= 0)
- goto oops;
- }
- for (stored = 4; stored <= 8; stored *= 2) {
- int ttisstdcnt;
- int ttisgmtcnt;
-
- ttisstdcnt = (int) detzcode(up->tzhead.tzh_ttisstdcnt);
- ttisgmtcnt = (int) detzcode(up->tzhead.tzh_ttisgmtcnt);
- sp->leapcnt = (int) detzcode(up->tzhead.tzh_leapcnt);
- sp->timecnt = (int) detzcode(up->tzhead.tzh_timecnt);
- sp->typecnt = (int) detzcode(up->tzhead.tzh_typecnt);
- sp->charcnt = (int) detzcode(up->tzhead.tzh_charcnt);
- p = up->tzhead.tzh_charcnt + sizeof up->tzhead.tzh_charcnt;
- if (sp->leapcnt < 0 || sp->leapcnt > TZ_MAX_LEAPS ||
- sp->typecnt <= 0 || sp->typecnt > TZ_MAX_TYPES ||
- sp->timecnt < 0 || sp->timecnt > TZ_MAX_TIMES ||
- sp->charcnt < 0 || sp->charcnt > TZ_MAX_CHARS ||
- (ttisstdcnt != sp->typecnt && ttisstdcnt != 0) ||
- (ttisgmtcnt != sp->typecnt && ttisgmtcnt != 0))
- goto oops;
- if (nread - (p - up->buf) <
- sp->timecnt * stored + /* ats */
- sp->timecnt + /* types */
- sp->typecnt * 6 + /* ttinfos */
- sp->charcnt + /* chars */
- sp->leapcnt * (stored + 4) + /* lsinfos */
- ttisstdcnt + /* ttisstds */
- ttisgmtcnt) /* ttisgmts */
- goto oops;
- for (i = 0; i < sp->timecnt; ++i) {
- sp->ats[i] = (time_t)((stored == 4) ?
- detzcode(p) : detzcode64(p));
- p += stored;
- }
- for (i = 0; i < sp->timecnt; ++i) {
- sp->types[i] = (unsigned char) *p++;
- if (sp->types[i] >= sp->typecnt)
- goto oops;
- }
- for (i = 0; i < sp->typecnt; ++i) {
- struct ttinfo * ttisp;
-
- ttisp = &sp->ttis[i];
- ttisp->tt_gmtoff = detzcode(p);
- p += 4;
- ttisp->tt_isdst = (unsigned char) *p++;
- if (ttisp->tt_isdst != 0 && ttisp->tt_isdst != 1)
- goto oops;
- ttisp->tt_abbrind = (unsigned char) *p++;
- if (ttisp->tt_abbrind < 0 ||
- ttisp->tt_abbrind > sp->charcnt)
- goto oops;
- }
- for (i = 0; i < sp->charcnt; ++i)
- sp->chars[i] = *p++;
- sp->chars[i] = '\0'; /* ensure '\0' at end */
- for (i = 0; i < sp->leapcnt; ++i) {
- struct lsinfo * lsisp;
-
- lsisp = &sp->lsis[i];
- lsisp->ls_trans = (time_t)((stored == 4) ?
- detzcode(p) : detzcode64(p));
- p += stored;
- lsisp->ls_corr = detzcode(p);
- p += 4;
- }
- for (i = 0; i < sp->typecnt; ++i) {
- struct ttinfo * ttisp;
-
- ttisp = &sp->ttis[i];
- if (ttisstdcnt == 0)
- ttisp->tt_ttisstd = FALSE;
- else {
- ttisp->tt_ttisstd = *p++;
- if (ttisp->tt_ttisstd != TRUE &&
- ttisp->tt_ttisstd != FALSE)
- goto oops;
- }
- }
- for (i = 0; i < sp->typecnt; ++i) {
- struct ttinfo * ttisp;
-
- ttisp = &sp->ttis[i];
- if (ttisgmtcnt == 0)
- ttisp->tt_ttisgmt = FALSE;
- else {
- ttisp->tt_ttisgmt = *p++;
- if (ttisp->tt_ttisgmt != TRUE &&
- ttisp->tt_ttisgmt != FALSE)
- goto oops;
- }
- }
- /*
- ** Out-of-sort ats should mean we're running on a
- ** signed time_t system but using a data file with
- ** unsigned values (or vice versa).
- */
- for (i = 0; i < sp->timecnt - 2; ++i)
- if (sp->ats[i] > sp->ats[i + 1]) {
- ++i;
- if (TYPE_SIGNED(time_t)) {
- /*
- ** Ignore the end (easy).
- */
- sp->timecnt = i;
- } else {
- /*
- ** Ignore the beginning (harder).
- */
- int j;
-
- for (j = 0; j + i < sp->timecnt; ++j) {
- sp->ats[j] = sp->ats[j + i];
- sp->types[j] = sp->types[j + i];
- }
- sp->timecnt = j;
- }
- break;
- }
- /*
- ** If this is an old file, we're done.
- */
- if (up->tzhead.tzh_version[0] == '\0')
- break;
- nread -= p - up->buf;
- for (i = 0; i < nread; ++i)
- up->buf[i] = p[i];
- /*
- ** If this is a narrow integer time_t system, we're done.
- */
- if (stored >= (int) sizeof(time_t)
-/* CONSTCOND */
- && TYPE_INTEGRAL(time_t))
- break;
- }
- if (doextend && nread > 2 &&
- up->buf[0] == '\n' && up->buf[nread - 1] == '\n' &&
- sp->typecnt + 2 <= TZ_MAX_TYPES) {
- struct __state ts;
- int result;
-
- up->buf[nread - 1] = '\0';
- result = tzparse(&ts, &up->buf[1], FALSE);
- if (result == 0 && ts.typecnt == 2 &&
- sp->charcnt + ts.charcnt <= TZ_MAX_CHARS) {
- for (i = 0; i < 2; ++i)
- ts.ttis[i].tt_abbrind +=
- sp->charcnt;
- for (i = 0; i < ts.charcnt; ++i)
- sp->chars[sp->charcnt++] =
- ts.chars[i];
- i = 0;
- while (i < ts.timecnt &&
- ts.ats[i] <=
- sp->ats[sp->timecnt - 1])
- ++i;
- while (i < ts.timecnt &&
- sp->timecnt < TZ_MAX_TIMES) {
- sp->ats[sp->timecnt] =
- ts.ats[i];
- sp->types[sp->timecnt] =
- sp->typecnt +
- ts.types[i];
- ++sp->timecnt;
- ++i;
- }
- sp->ttis[sp->typecnt++] = ts.ttis[0];
- sp->ttis[sp->typecnt++] = ts.ttis[1];
- }
- }
- if (sp->timecnt > 1) {
- for (i = 1; i < sp->timecnt; ++i)
- if (typesequiv(sp, sp->types[i], sp->types[0]) &&
- differ_by_repeat(sp->ats[i], sp->ats[0])) {
- sp->goback = TRUE;
- break;
- }
- for (i = sp->timecnt - 2; i >= 0; --i)
- if (typesequiv(sp, sp->types[sp->timecnt - 1],
- sp->types[i]) &&
- differ_by_repeat(sp->ats[sp->timecnt - 1],
- sp->ats[i])) {
- sp->goahead = TRUE;
- break;
- }
- }
- free(up);
- /*
- ** Get latest zone offsets into tzinfo (for newlib). . .
- */
- if (sp == lclptr)
- {
- for (i = 0; i < sp->timecnt; ++i)
- {
- const struct ttinfo *const ttisp = &sp->ttis[sp->types[i]];
-
- __gettzinfo ()->__tzrule[ttisp->tt_isdst].offset
- = -ttisp->tt_gmtoff;
- }
- }
- return 0;
-oops:
- free(up);
- return -1;
-}
-
-static int
-typesequiv(const timezone_t sp, const int a, const int b)
-{
- int result;
-
- if (sp == NULL ||
- a < 0 || a >= sp->typecnt ||
- b < 0 || b >= sp->typecnt)
- result = FALSE;
- else {
- const struct ttinfo * ap = &sp->ttis[a];
- const struct ttinfo * bp = &sp->ttis[b];
- result = ap->tt_gmtoff == bp->tt_gmtoff &&
- ap->tt_isdst == bp->tt_isdst &&
- ap->tt_ttisstd == bp->tt_ttisstd &&
- ap->tt_ttisgmt == bp->tt_ttisgmt &&
- strcmp(&sp->chars[ap->tt_abbrind],
- &sp->chars[bp->tt_abbrind]) == 0;
- }
- return result;
-}
-
-static const int mon_lengths[2][MONSPERYEAR] = {
- { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 },
- { 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }
-};
-
-static const int year_lengths[2] = {
- DAYSPERNYEAR, DAYSPERLYEAR
-};
-
-/*
-** Given a pointer into a time zone string, scan until a character that is not
-** a valid character in a zone name is found. Return a pointer to that
-** character.
-*/
-
-static const char *
-getzname(const char *strp)
-{
- char c;
-
- while ((c = *strp) != '\0' && !is_digit(c) && c != ',' && c != '-' &&
- c != '+')
- ++strp;
- return strp;
-}
-
-/*
-** Given a pointer into an extended time zone string, scan until the ending
-** delimiter of the zone name is located. Return a pointer to the delimiter.
-**
-** As with getzname above, the legal character set is actually quite
-** restricted, with other characters producing undefined results.
-** We don't do any checking here; checking is done later in common-case code.
-*/
-
-static const char *
-getqzname(const char *strp, const int delim)
-{
- int c;
-
- while ((c = *strp) != '\0' && c != delim)
- ++strp;
- return strp;
-}
-
-/*
-** Given a pointer into a time zone string, extract a number from that string.
-** Check that the number is within a specified range; if it is not, return
-** NULL.
-** Otherwise, return a pointer to the first character not part of the number.
-*/
-
-static const char *
-getnum(const char *strp, int *const nump, const int min, const int max)
-{
- char c;
- int num;
-
- if (strp == NULL || !is_digit(c = *strp)) {
- errno = EINVAL;
- return NULL;
- }
- num = 0;
- do {
- num = num * 10 + (c - '0');
- if (num > max) {
- errno = EOVERFLOW;
- return NULL; /* illegal value */
- }
- c = *++strp;
- } while (is_digit(c));
- if (num < min) {
- errno = EINVAL;
- return NULL; /* illegal value */
- }
- *nump = num;
- return strp;
-}
-
-/*
-** Given a pointer into a time zone string, extract a number of seconds,
-** in hh[:mm[:ss]] form, from the string.
-** If any error occurs, return NULL.
-** Otherwise, return a pointer to the first character not part of the number
-** of seconds.
-*/
-
-static const char *
-getsecs(const char *strp, long *const secsp)
-{
- int num;
-
- /*
- ** `HOURSPERDAY * DAYSPERWEEK - 1' allows quasi-Posix rules like
- ** "M10.4.6/26", which does not conform to Posix,
- ** but which specifies the equivalent of
- ** ``02:00 on the first Sunday on or after 23 Oct''.
- */
- strp = getnum(strp, &num, 0, HOURSPERDAY * DAYSPERWEEK - 1);
- if (strp == NULL)
- return NULL;
- *secsp = num * (long) SECSPERHOUR;
- if (*strp == ':') {
- ++strp;
- strp = getnum(strp, &num, 0, MINSPERHOUR - 1);
- if (strp == NULL)
- return NULL;
- *secsp += num * SECSPERMIN;
- if (*strp == ':') {
- ++strp;
- /* `SECSPERMIN' allows for leap seconds. */
- strp = getnum(strp, &num, 0, SECSPERMIN);
- if (strp == NULL)
- return NULL;
- *secsp += num;
- }
- }
- return strp;
-}
-
-/*
-** Given a pointer into a time zone string, extract an offset, in
-** [+-]hh[:mm[:ss]] form, from the string.
-** If any error occurs, return NULL.
-** Otherwise, return a pointer to the first character not part of the time.
-*/
-
-static const char *
-getoffset(const char *strp, long *const offsetp)
-{
- int neg = 0;
-
- if (*strp == '-') {
- neg = 1;
- ++strp;
- } else if (*strp == '+')
- ++strp;
- strp = getsecs(strp, offsetp);
- if (strp == NULL)
- return NULL; /* illegal time */
- if (neg)
- *offsetp = -*offsetp;
- return strp;
-}
-
-/*
-** Given a pointer into a time zone string, extract a rule in the form
-** date[/time]. See POSIX section 8 for the format of "date" and "time".
-** If a valid rule is not found, return NULL.
-** Otherwise, return a pointer to the first character not part of the rule.
-*/
-
-static const char *
-getrule(const char *strp, struct rule *const rulep)
-{
- if (*strp == 'J') {
- /*
- ** Julian day.
- */
- rulep->r_type = JULIAN_DAY;
- ++strp;
- strp = getnum(strp, &rulep->r_day, 1, DAYSPERNYEAR);
- } else if (*strp == 'M') {
- /*
- ** Month, week, day.
- */
- rulep->r_type = MONTH_NTH_DAY_OF_WEEK;
- ++strp;
- strp = getnum(strp, &rulep->r_mon, 1, MONSPERYEAR);
- if (strp == NULL)
- return NULL;
- if (*strp++ != '.')
- return NULL;
- strp = getnum(strp, &rulep->r_week, 1, 5);
- if (strp == NULL)
- return NULL;
- if (*strp++ != '.')
- return NULL;
- strp = getnum(strp, &rulep->r_day, 0, DAYSPERWEEK - 1);
- } else if (is_digit(*strp)) {
- /*
- ** Day of year.
- */
- rulep->r_type = DAY_OF_YEAR;
- strp = getnum(strp, &rulep->r_day, 0, DAYSPERLYEAR - 1);
- } else return NULL; /* invalid format */
- if (strp == NULL)
- return NULL;
- if (*strp == '/') {
- /*
- ** Time specified.
- */
- ++strp;
- strp = getsecs(strp, &rulep->r_time);
- } else rulep->r_time = 2 * SECSPERHOUR; /* default = 2:00:00 */
- return strp;
-}
-
-/*
-** Given the Epoch-relative time of January 1, 00:00:00 UTC, in a year, the
-** year, a rule, and the offset from UTC at the time that rule takes effect,
-** calculate the Epoch-relative time that rule takes effect.
-*/
-
-static time_t
-transtime(const time_t janfirst, const int year, const struct rule *const rulep,
- const long offset)
-{
- int leapyear;
- time_t value;
- int i;
- int d, m1, yy0, yy1, yy2, dow;
-
- INITIALIZE(value);
- leapyear = isleap(year);
- switch (rulep->r_type) {
-
- case JULIAN_DAY:
- /*
- ** Jn - Julian day, 1 == January 1, 60 == March 1 even in leap
- ** years.
- ** In non-leap years, or if the day number is 59 or less, just
- ** add SECSPERDAY times the day number-1 to the time of
- ** January 1, midnight, to get the day.
- */
- value = (time_t)(janfirst + (rulep->r_day - 1) * SECSPERDAY);
- if (leapyear && rulep->r_day >= 60)
- value += SECSPERDAY;
- break;
-
- case DAY_OF_YEAR:
- /*
- ** n - day of year.
- ** Just add SECSPERDAY times the day number to the time of
- ** January 1, midnight, to get the day.
- */
- value = (time_t)(janfirst + rulep->r_day * SECSPERDAY);
- break;
-
- case MONTH_NTH_DAY_OF_WEEK:
- /*
- ** Mm.n.d - nth "dth day" of month m.
- */
- value = janfirst;
- for (i = 0; i < rulep->r_mon - 1; ++i)
- value += (time_t)(mon_lengths[leapyear][i] * SECSPERDAY);
-
- /*
- ** Use Zeller's Congruence to get day-of-week of first day of
- ** month.
- */
- m1 = (rulep->r_mon + 9) % 12 + 1;
- yy0 = (rulep->r_mon <= 2) ? (year - 1) : year;
- yy1 = yy0 / 100;
- yy2 = yy0 % 100;
- dow = ((26 * m1 - 2) / 10 +
- 1 + yy2 + yy2 / 4 + yy1 / 4 - 2 * yy1) % 7;
- if (dow < 0)
- dow += DAYSPERWEEK;
-
- /*
- ** "dow" is the day-of-week of the first day of the month. Get
- ** the day-of-month (zero-origin) of the first "dow" day of the
- ** month.
- */
- d = rulep->r_day - dow;
- if (d < 0)
- d += DAYSPERWEEK;
- for (i = 1; i < rulep->r_week; ++i) {
- if (d + DAYSPERWEEK >=
- mon_lengths[leapyear][rulep->r_mon - 1])
- break;
- d += DAYSPERWEEK;
- }
-
- /*
- ** "d" is the day-of-month (zero-origin) of the day we want.
- */
- value += (time_t)(d * SECSPERDAY);
- break;
- }
-
- /*
- ** "value" is the Epoch-relative time of 00:00:00 UTC on the day in
- ** question. To get the Epoch-relative time of the specified local
- ** time on that day, add the transition time and the current offset
- ** from UTC.
- */
- return (time_t)(value + rulep->r_time + offset);
-}
-
-/*
-** Given a POSIX section 8-style TZ string, fill in the rule tables as
-** appropriate.
-*/
-
-static int
-tzparse(timezone_t sp, const char *name, const int lastditch)
-{
- const char * stdname;
- const char * dstname;
- size_t stdlen;
- size_t dstlen;
- long stdoffset;
- long dstoffset;
- time_t * atp;
- unsigned char * typep;
- char * cp;
- int load_result;
-
- INITIALIZE(dstname);
- stdname = name;
- if (lastditch) {
- stdlen = strlen(name); /* length of standard zone name */
- name += stdlen;
- if (stdlen >= sizeof sp->chars)
- stdlen = (sizeof sp->chars) - 1;
- stdoffset = 0;
- } else {
- if (*name == '<') {
- name++;
- stdname = name;
- name = getqzname(name, '>');
- if (*name != '>')
- return (-1);
- stdlen = name - stdname;
- name++;
- } else {
- name = getzname(name);
- stdlen = name - stdname;
- }
- if (*name == '\0')
- return -1;
- name = getoffset(name, &stdoffset);
- if (name == NULL)
- return -1;
- }
- load_result = tzload(sp, TZDEFRULES, FALSE);
- if (load_result != 0)
- sp->leapcnt = 0; /* so, we're off a little */
- if (*name != '\0') {
- if (*name == '<') {
- dstname = ++name;
- name = getqzname(name, '>');
- if (*name != '>')
- return -1;
- dstlen = name - dstname;
- name++;
- } else {
- dstname = name;
- name = getzname(name);
- dstlen = name - dstname; /* length of DST zone name */
- }
- if (*name != '\0' && *name != ',' && *name != ';') {
- name = getoffset(name, &dstoffset);
- if (name == NULL)
- return -1;
- } else dstoffset = stdoffset - SECSPERHOUR;
- if (*name == '\0' && load_result != 0)
- name = TZDEFRULESTRING;
- if (*name == ',' || *name == ';') {
- struct rule start;
- struct rule end;
- int year;
- time_t janfirst;
- time_t starttime;
- time_t endtime;
-
- ++name;
- if ((name = getrule(name, &start)) == NULL)
- return -1;
- if (*name++ != ',')
- return -1;
- if ((name = getrule(name, &end)) == NULL)
- return -1;
- if (*name != '\0')
- return -1;
- sp->typecnt = 2; /* standard time and DST */
- /*
- ** Two transitions per year, from EPOCH_YEAR forward.
- */
- memset(sp->ttis, 0, sizeof(sp->ttis));
- sp->ttis[0].tt_gmtoff = -dstoffset;
- sp->ttis[0].tt_isdst = 1;
- sp->ttis[0].tt_abbrind = (int)(stdlen + 1);
- sp->ttis[1].tt_gmtoff = -stdoffset;
- sp->ttis[1].tt_isdst = 0;
- sp->ttis[1].tt_abbrind = 0;
- atp = sp->ats;
- typep = sp->types;
- janfirst = 0;
- sp->timecnt = 0;
- for (year = EPOCH_YEAR;
- sp->timecnt + 2 <= TZ_MAX_TIMES;
- ++year) {
- time_t newfirst;
-
- starttime = transtime(janfirst, year, &start,
- stdoffset);
- endtime = transtime(janfirst, year, &end,
- dstoffset);
- if (starttime > endtime) {
- *atp++ = endtime;
- *typep++ = 1; /* DST ends */
- *atp++ = starttime;
- *typep++ = 0; /* DST begins */
- } else {
- *atp++ = starttime;
- *typep++ = 0; /* DST begins */
- *atp++ = endtime;
- *typep++ = 1; /* DST ends */
- }
- sp->timecnt += 2;
- newfirst = janfirst;
- newfirst += (time_t)
- (year_lengths[isleap(year)] * SECSPERDAY);
- if (newfirst <= janfirst)
- break;
- janfirst = newfirst;
- }
- /*
- ** Get zone offsets into tzinfo (for newlib). . .
- */
- if (sp == lclptr)
- {
- __gettzinfo ()->__tzrule[0].offset
- = -sp->ttis[1].tt_gmtoff;
- __gettzinfo ()->__tzrule[1].offset
- = -sp->ttis[0].tt_gmtoff;
- }
- } else {
- long theirstdoffset;
- long theirdstoffset;
- long theiroffset;
- int isdst;
- int i;
- int j;
-
- if (*name != '\0')
- return -1;
- /*
- ** Initial values of theirstdoffset and theirdstoffset.
- */
- theirstdoffset = 0;
- for (i = 0; i < sp->timecnt; ++i) {
- j = sp->types[i];
- if (!sp->ttis[j].tt_isdst) {
- theirstdoffset =
- -sp->ttis[j].tt_gmtoff;
- break;
- }
- }
- theirdstoffset = 0;
- for (i = 0; i < sp->timecnt; ++i) {
- j = sp->types[i];
- if (sp->ttis[j].tt_isdst) {
- theirdstoffset =
- -sp->ttis[j].tt_gmtoff;
- break;
- }
- }
- /*
- ** Initially we're assumed to be in standard time.
- */
- isdst = FALSE;
- theiroffset = theirstdoffset;
- /*
- ** Now juggle transition times and types
- ** tracking offsets as you do.
- */
- for (i = 0; i < sp->timecnt; ++i) {
- j = sp->types[i];
- sp->types[i] = sp->ttis[j].tt_isdst;
- if (sp->ttis[j].tt_ttisgmt) {
- /* No adjustment to transition time */
- } else {
- /*
- ** If summer time is in effect, and the
- ** transition time was not specified as
- ** standard time, add the summer time
- ** offset to the transition time;
- ** otherwise, add the standard time
- ** offset to the transition time.
- */
- /*
- ** Transitions from DST to DDST
- ** will effectively disappear since
- ** POSIX provides for only one DST
- ** offset.
- */
- if (isdst && !sp->ttis[j].tt_ttisstd) {
- sp->ats[i] += (time_t)
- (dstoffset - theirdstoffset);
- } else {
- sp->ats[i] += (time_t)
- (stdoffset - theirstdoffset);
- }
- }
- theiroffset = -sp->ttis[j].tt_gmtoff;
- if (!sp->ttis[j].tt_isdst)
- theirstdoffset = theiroffset;
- else theirdstoffset = theiroffset;
- }
- /*
- ** Finally, fill in ttis.
- ** ttisstd and ttisgmt need not be handled
- */
- memset(sp->ttis, 0, sizeof(sp->ttis));
- sp->ttis[0].tt_gmtoff = -stdoffset;
- sp->ttis[0].tt_isdst = FALSE;
- sp->ttis[0].tt_abbrind = 0;
- sp->ttis[1].tt_gmtoff = -dstoffset;
- sp->ttis[1].tt_isdst = TRUE;
- sp->ttis[1].tt_abbrind = (int)(stdlen + 1);
- sp->typecnt = 2;
- /*
- ** Get zone offsets into tzinfo (for newlib). . .
- */
- if (sp == lclptr)
- {
- __gettzinfo ()->__tzrule[0].offset
- = -sp->ttis[0].tt_gmtoff;
- __gettzinfo ()->__tzrule[1].offset
- = -sp->ttis[1].tt_gmtoff;
- }
- }
- } else {
- dstlen = 0;
- sp->typecnt = 1; /* only standard time */
- sp->timecnt = 0;
- memset(sp->ttis, 0, sizeof(sp->ttis));
- sp->ttis[0].tt_gmtoff = -stdoffset;
- sp->ttis[0].tt_isdst = 0;
- sp->ttis[0].tt_abbrind = 0;
- /*
- ** Get zone offsets into tzinfo (for newlib). . .
- */
- if (sp == lclptr)
- {
- __gettzinfo ()->__tzrule[0].offset = -sp->ttis[0].tt_gmtoff;
- __gettzinfo ()->__tzrule[1].offset = -sp->ttis[0].tt_gmtoff;
- }
- }
- sp->charcnt = (int)(stdlen + 1);
- if (dstlen != 0)
- sp->charcnt += (int)(dstlen + 1);
- if ((size_t) sp->charcnt > sizeof sp->chars)
- return -1;
- cp = sp->chars;
- (void) strncpy(cp, stdname, stdlen);
- cp += stdlen;
- *cp++ = '\0';
- if (dstlen != 0) {
- (void) strncpy(cp, dstname, dstlen);
- *(cp + dstlen) = '\0';
- }
- return 0;
-}
-
-static void
-gmtload(timezone_t sp)
-{
- if (tzload(sp, gmt, TRUE) != 0)
- (void) tzparse(sp, gmt, TRUE);
-}
-
-#ifndef STD_INSPIRED
-/*
-** A non-static declaration of tzsetwall in a system header file
-** may cause a warning about this upcoming static declaration...
-*/
-static
-#endif /* !defined STD_INSPIRED */
-void
-tzsetwall (void)
-{
- if (lcl_is_set == lcl_setting)
- return;
- lcl_is_set = lcl_setting;
-
- if (lclptr == NULL) {
- save_errno save;
- lclptr = (timezone_t) calloc(1, sizeof *lclptr);
- if (lclptr == NULL) {
- settzname(); /* all we can do */
- return;
- }
- }
-#if defined (__CYGWIN__)
- {
- TIME_ZONE_INFORMATION tz;
- char buf[BUFSIZ];
- char *cp, *dst;
- wchar_t *src;
- div_t d;
- GetTimeZoneInformation(&tz);
- dst = cp = buf;
- for (src = tz.StandardName; *src; src++)
- if (*src >= L'A' && *src <= L'Z')
- *dst++ = *src;
- if ((dst - cp) < 3)
- {
- /* In non-english Windows, converted tz.StandardName
- may not contain a valid standard timezone name. */
- strcpy(cp, wildabbr);
- cp += strlen(wildabbr);
- }
- else
- cp = dst;
- d = div(tz.Bias+tz.StandardBias, 60);
- sprintf(cp, "%d", d.quot);
- if (d.rem)
- sprintf(cp=strchr(cp, 0), ":%d", abs(d.rem));
- if(tz.StandardDate.wMonth) {
- cp = strchr(cp, 0);
- dst = cp;
- for (src = tz.DaylightName; *src; src++)
- if (*src >= L'A' && *src <= L'Z')
- *dst++ = *src;
- if ((dst - cp) < 3)
- {
- /* In non-english Windows, converted tz.DaylightName
- may not contain a valid daylight timezone name. */
- strcpy(cp, wildabbr);
- cp += strlen(wildabbr);
- }
- else
- cp = dst;
- d = div(tz.Bias+tz.DaylightBias, 60);
- sprintf(cp, "%d", d.quot);
- if (d.rem)
- sprintf(cp=strchr(cp, 0), ":%d", abs(d.rem));
- cp = strchr(cp, 0);
- sprintf(cp=strchr(cp, 0), ",M%d.%d.%d/%d",
- tz.DaylightDate.wMonth,
- tz.DaylightDate.wDay,
- tz.DaylightDate.wDayOfWeek,
- tz.DaylightDate.wHour);
- if (tz.DaylightDate.wMinute || tz.DaylightDate.wSecond)
- sprintf(cp=strchr(cp, 0), ":%d", tz.DaylightDate.wMinute);
- if (tz.DaylightDate.wSecond)
- sprintf(cp=strchr(cp, 0), ":%d", tz.DaylightDate.wSecond);
- cp = strchr(cp, 0);
- sprintf(cp=strchr(cp, 0), ",M%d.%d.%d/%d",
- tz.StandardDate.wMonth,
- tz.StandardDate.wDay,
- tz.StandardDate.wDayOfWeek,
- tz.StandardDate.wHour);
- if (tz.StandardDate.wMinute || tz.StandardDate.wSecond)
- sprintf(cp=strchr(cp, 0), ":%d", tz.StandardDate.wMinute);
- if (tz.StandardDate.wSecond)
- sprintf(cp=strchr(cp, 0), ":%d", tz.StandardDate.wSecond);
- }
- /* printf("TZ deduced as `%s'\n", buf); */
- if (tzparse(lclptr, buf, FALSE) == 0) {
- settzname();
- lcl_is_set = lcl_from_default;
- strlcpy(lcl_TZname, buf, sizeof (lcl_TZname));
-#if 0
- /* Huh? POSIX doesn't mention anywhere that tzset should
- set $TZ. That's not right. */
- setenv("TZ", lcl_TZname, 1);
-#endif
- return;
- }
- }
-#endif
- if (tzload(lclptr, NULL, TRUE) != 0)
- gmtload(lclptr);
- settzname();
-}
-
-static NO_COPY muto tzset_guard;
-
-#ifdef __CYGWIN__
-extern "C"
-#else
-#ifndef STD_INSPIRED
-/*
-** A non-static declaration of tzsetwall in a system header file
-** may cause a warning about this upcoming static declaration...
-*/
-static
-#endif /* !defined STD_INSPIRED */
-#endif
-void
-tzset_unlocked(void)
-{
- const char * name;
-
- name = getenv("TZ");
- if (name == NULL) {
- if (lcl_is_set != lcl_from_default)
- tzsetwall();
- return;
- }
-
- if (lcl_is_set > 0 && strcmp(lcl_TZname, name) == 0)
- return;
- lcl_is_set = (strlen(name) < sizeof (lcl_TZname)) ? lcl_from_environment : lcl_unset;
- if (lcl_is_set != lcl_unset)
- (void)strlcpy(lcl_TZname, name, sizeof (lcl_TZname));
-
- if (lclptr == NULL) {
- save_errno save;
- lclptr = (timezone_t) calloc(1, sizeof *lclptr);
- if (lclptr == NULL) {
- settzname(); /* all we can do */
- return;
- }
- }
- if (*name == '\0') {
- /*
- ** User wants it fast rather than right.
- */
- lclptr->leapcnt = 0; /* so, we're off a little */
- lclptr->timecnt = 0;
- lclptr->typecnt = 0;
- lclptr->ttis[0].tt_isdst = 0;
- lclptr->ttis[0].tt_gmtoff = 0;
- lclptr->ttis[0].tt_abbrind = 0;
- (void) strlcpy(lclptr->chars, gmt, sizeof(lclptr->chars));
- } else if (tzload(lclptr, name, TRUE) != 0)
- if (name[0] == ':' || tzparse(lclptr, name, FALSE) != 0)
- (void) gmtload(lclptr);
- settzname();
-}
-
-EXPORT_ALIAS (tzset_unlocked, _tzset_unlocked)
-
-extern "C" void
-tzset(void)
-{
- tzset_guard.init ("tzset_guard")->acquire ();
- tzset_unlocked();
- tzset_guard.release ();
-}
-
-/*
-** The easy way to behave "as if no library function calls" localtime
-** is to not call it--so we drop its guts into "localsub", which can be
-** freely called. (And no, the PANS doesn't require the above behavior--
-** but it *is* desirable.)
-**
-** The unused offset argument is for the benefit of mktime variants.
-*/
-
-/*ARGSUSED*/
-static struct tm *
-localsub(const timezone_t sp, const time_t * const timep, const long offset,
- struct tm *const tmp)
-{
- const struct ttinfo * ttisp;
- int i;
- struct tm * result;
- const time_t t = *timep;
-
- if ((sp->goback && t < sp->ats[0]) ||
- (sp->goahead && t > sp->ats[sp->timecnt - 1])) {
- time_t newt = t;
- time_t seconds;
- time_t tcycles;
- int_fast64_t icycles;
-
- if (t < sp->ats[0])
- seconds = sp->ats[0] - t;
- else seconds = t - sp->ats[sp->timecnt - 1];
- --seconds;
- tcycles = (time_t)
- (seconds / YEARSPERREPEAT / AVGSECSPERYEAR);
- ++tcycles;
- icycles = tcycles;
- if (tcycles - icycles >= 1 || icycles - tcycles >= 1)
- return NULL;
- seconds = (time_t) icycles;
- seconds *= YEARSPERREPEAT;
- seconds *= AVGSECSPERYEAR;
- if (t < sp->ats[0])
- newt += seconds;
- else newt -= seconds;
- if (newt < sp->ats[0] ||
- newt > sp->ats[sp->timecnt - 1])
- return NULL; /* "cannot happen" */
- result = localsub(sp, &newt, offset, tmp);
- if (result == tmp) {
- time_t newy;
-
- newy = tmp->tm_year;
- if (t < sp->ats[0])
- newy -= (time_t)icycles * YEARSPERREPEAT;
- else newy += (time_t)icycles * YEARSPERREPEAT;
- tmp->tm_year = (int)newy;
- if (tmp->tm_year != newy)
- return NULL;
- }
- return result;
- }
- if (sp->timecnt == 0 || t < sp->ats[0]) {
- i = 0;
- while (sp->ttis[i].tt_isdst)
- if (++i >= sp->typecnt) {
- i = 0;
- break;
- }
- } else {
- int lo = 1;
- int hi = sp->timecnt;
-
- while (lo < hi) {
- int mid = (lo + hi) / 2;
-
- if (t < sp->ats[mid])
- hi = mid;
- else lo = mid + 1;
- }
- i = (int) sp->types[lo - 1];
- }
- ttisp = &sp->ttis[i];
- /*
- ** To get (wrong) behavior that's compatible with System V Release 2.0
- ** you'd replace the statement below with
- ** t += ttisp->tt_gmtoff;
- ** timesub(&t, 0L, sp, tmp);
- */
- result = timesub(sp, &t, ttisp->tt_gmtoff, tmp);
- tmp->tm_isdst = ttisp->tt_isdst;
- if (sp == lclptr)
- tzname[tmp->tm_isdst] = &sp->chars[ttisp->tt_abbrind];
-#ifdef TM_ZONE
- if (CYGWIN_VERSION_CHECK_FOR_EXTRA_TM_MEMBERS)
- tmp->TM_ZONE = &sp->chars[ttisp->tt_abbrind];
-#endif /* defined TM_ZONE */
- return result;
-}
-
-/*
-** Re-entrant version of localtime.
-*/
-extern "C" struct tm *
-localtime_r(const time_t *__restrict timep, struct tm *__restrict tmp)
-{
- tzset_guard.init ("tzset_guard")->acquire ();
- tzset_unlocked();
- tmp = localsub(lclptr, timep, 0L, tmp);
- tzset_guard.release ();
- if (tmp == NULL)
- errno = EOVERFLOW;
- return tmp;
-}
-
-extern "C" struct tm *
-localtime(const time_t *const timep)
-{
- return localtime_r(timep, &tm);
-}
-
-/*
-** gmtsub is to gmtime as localsub is to localtime.
-*/
-static NO_COPY muto gmt_guard;
-
-static struct tm *
-gmtsub(const timezone_t sp, const time_t *const timep, const long offset,
- struct tm *tmp)
-{
- struct tm * result;
-
- gmt_guard.init ("gmt_guard")->acquire ();
- if (!gmt_is_set) {
- save_errno save;
- gmt_is_set = TRUE;
- gmtptr = (timezone_t) calloc(1, sizeof *gmtptr);
- if (gmtptr != NULL)
- gmtload(gmtptr);
- }
- gmt_guard.release ();
- result = timesub(gmtptr, timep, offset, tmp);
-#ifdef TM_ZONE
- /*
- ** Could get fancy here and deliver something such as
- ** "UTC+xxxx" or "UTC-xxxx" if offset is non-zero,
- ** but this is no time for a treasure hunt.
- */
- if (CYGWIN_VERSION_CHECK_FOR_EXTRA_TM_MEMBERS)
- {
- if (offset != 0)
- tmp->TM_ZONE = wildabbr;
- else {
- if (gmtptr == NULL)
- tmp->TM_ZONE = gmt;
- else tmp->TM_ZONE = gmtptr->chars;
- }
- }
-#endif /* defined TM_ZONE */
- return result;
-}
-
-extern "C" struct tm *
-gmtime(const time_t *const timep)
-{
- struct tm *tmp = gmtsub(NULL, timep, 0L, &tm);
-
- if (tmp == NULL)
- errno = EOVERFLOW;
-
- return tmp;
-}
-
-/*
-** Re-entrant version of gmtime.
-*/
-
-extern "C" struct tm *
-gmtime_r(const time_t *__restrict const timep, struct tm *__restrict tmp)
-{
- tmp = gmtsub(NULL, timep, 0L, tmp);
-
- if (tmp == NULL)
- errno = EOVERFLOW;
-
- return tmp;
-}
-
-#ifdef STD_INSPIRED
-
-extern "C" struct tm *
-offtime(const time_t *const timep, long offset)
-{
- struct tm *tmp = gmtsub(NULL, timep, offset, &tm);
-
- if (tmp == NULL)
- errno = EOVERFLOW;
-
- return tmp;
-}
-
-#endif /* defined STD_INSPIRED */
-
-/*
-** Return the number of leap years through the end of the given year
-** where, to make the math easy, the answer for year zero is defined as zero.
-*/
-
-static int
-leaps_thru_end_of(const int y)
-{
- return (y >= 0) ? (y / 4 - y / 100 + y / 400) :
- -(leaps_thru_end_of(-(y + 1)) + 1);
-}
-
-static struct tm *
-timesub(const timezone_t sp, const time_t *const timep, const long offset,
- struct tm *const tmp)
-{
- const struct lsinfo * lp;
- time_t tdays;
- int idays; /* unsigned would be so 2003 */
- long rem;
- int y;
- const int * ip;
- long corr;
- int hit;
- int i;
-
- corr = 0;
- hit = 0;
- i = (sp == NULL) ? 0 : sp->leapcnt;
- while (--i >= 0) {
- lp = &sp->lsis[i];
- if (*timep >= lp->ls_trans) {
- if (*timep == lp->ls_trans) {
- hit = ((i == 0 && lp->ls_corr > 0) ||
- lp->ls_corr > sp->lsis[i - 1].ls_corr);
- if (hit)
- while (i > 0 &&
- sp->lsis[i].ls_trans ==
- sp->lsis[i - 1].ls_trans + 1 &&
- sp->lsis[i].ls_corr ==
- sp->lsis[i - 1].ls_corr + 1) {
- ++hit;
- --i;
- }
- }
- corr = lp->ls_corr;
- break;
- }
- }
- y = EPOCH_YEAR;
- tdays = (time_t)(*timep / SECSPERDAY);
- rem = (long) (*timep - tdays * SECSPERDAY);
- while (tdays < 0 || tdays >= year_lengths[isleap(y)]) {
- int newy;
- time_t tdelta;
- int idelta;
- int leapdays;
-
- tdelta = tdays / DAYSPERLYEAR;
- idelta = (int) tdelta;
- if (tdelta - idelta >= 1 || idelta - tdelta >= 1)
- return NULL;
- if (idelta == 0)
- idelta = (tdays < 0) ? -1 : 1;
- newy = y;
- if (increment_overflow(&newy, idelta))
- return NULL;
- leapdays = leaps_thru_end_of(newy - 1) -
- leaps_thru_end_of(y - 1);
- tdays -= ((time_t) newy - y) * DAYSPERNYEAR;
- tdays -= leapdays;
- y = newy;
- }
- {
- long seconds;
-
- seconds = tdays * SECSPERDAY + 0.5;
- tdays = (time_t)(seconds / SECSPERDAY);
- rem += (long) (seconds - tdays * SECSPERDAY);
- }
- /*
- ** Given the range, we can now fearlessly cast...
- */
- idays = (int) tdays;
- rem += offset - corr;
- while (rem < 0) {
- rem += SECSPERDAY;
- --idays;
- }
- while (rem >= SECSPERDAY) {
- rem -= SECSPERDAY;
- ++idays;
- }
- while (idays < 0) {
- if (increment_overflow(&y, -1))
- return NULL;
- idays += year_lengths[isleap(y)];
- }
- while (idays >= year_lengths[isleap(y)]) {
- idays -= year_lengths[isleap(y)];
- if (increment_overflow(&y, 1))
- return NULL;
- }
- tmp->tm_year = y;
- if (increment_overflow(&tmp->tm_year, -TM_YEAR_BASE))
- return NULL;
- tmp->tm_yday = idays;
- /*
- ** The "extra" mods below avoid overflow problems.
- */
- tmp->tm_wday = EPOCH_WDAY +
- ((y - EPOCH_YEAR) % DAYSPERWEEK) *
- (DAYSPERNYEAR % DAYSPERWEEK) +
- leaps_thru_end_of(y - 1) -
- leaps_thru_end_of(EPOCH_YEAR - 1) +
- idays;
- tmp->tm_wday %= DAYSPERWEEK;
- if (tmp->tm_wday < 0)
- tmp->tm_wday += DAYSPERWEEK;
- tmp->tm_hour = (int) (rem / SECSPERHOUR);
- rem %= SECSPERHOUR;
- tmp->tm_min = (int) (rem / SECSPERMIN);
- /*
- ** A positive leap second requires a special
- ** representation. This uses "... ??:59:60" et seq.
- */
- tmp->tm_sec = (int) (rem % SECSPERMIN) + hit;
- ip = mon_lengths[isleap(y)];
- for (tmp->tm_mon = 0; idays >= ip[tmp->tm_mon]; ++(tmp->tm_mon))
- idays -= ip[tmp->tm_mon];
- tmp->tm_mday = (int) (idays + 1);
- tmp->tm_isdst = 0;
-#ifdef TM_GMTOFF
- if (CYGWIN_VERSION_CHECK_FOR_EXTRA_TM_MEMBERS)
- tmp->TM_GMTOFF = offset;
-#endif /* defined TM_GMTOFF */
- return tmp;
-}
-
-extern "C" char *
-ctime(const time_t *const timep)
-{
-/*
-** Section 4.12.3.2 of X3.159-1989 requires that
-** The ctime function converts the calendar time pointed to by timer
-** to local time in the form of a string. It is equivalent to
-** asctime(localtime(timer))
-*/
- struct tm *rtm = localtime(timep);
- if (rtm == NULL)
- return NULL;
- return asctime(rtm);
-}
-
-extern "C" char *
-ctime_r(const time_t *const timep, char *buf)
-{
- struct tm mytm, *rtm;
-
- rtm = localtime_r(timep, &mytm);
- if (rtm == NULL)
- return NULL;
- return asctime_r(rtm, buf);
-}
-
-/*
-** Adapted from code provided by Robert Elz, who writes:
-** The "best" way to do mktime I think is based on an idea of Bob
-** Kridle's (so its said...) from a long time ago.
-** It does a binary search of the time_t space. Since time_t's are
-** just 32 bits, its a max of 32 iterations (even at 64 bits it
-** would still be very reasonable).
-*/
-
-#ifndef WRONG
-#define WRONG ((time_t)-1)
-#endif /* !defined WRONG */
-
-/*
-** Simplified normalize logic courtesy Paul Eggert.
-*/
-
-static int
-increment_overflow(int *const ip, int j)
-{
- int i = *ip;
-
- /*
- ** If i >= 0 there can only be overflow if i + j > INT_MAX
- ** or if j > INT_MAX - i; given i >= 0, INT_MAX - i cannot overflow.
- ** If i < 0 there can only be overflow if i + j < INT_MIN
- ** or if j < INT_MIN - i; given i < 0, INT_MIN - i cannot overflow.
- */
- if ((i >= 0) ? (j > INT_MAX - i) : (j < INT_MIN - i))
- return TRUE;
- *ip += j;
- return FALSE;
-}
-
-static int
-long_increment_overflow(long *const lp, int m)
-{
- long l = *lp;
-
- if ((l >= 0) ? (m > LONG_MAX - l) : (m < LONG_MIN - l))
- return TRUE;
- *lp += m;
- return FALSE;
-}
-
-static int
-normalize_overflow(int *const tensptr, int *const unitsptr, const int base)
-{
- int tensdelta;
-
- tensdelta = (*unitsptr >= 0) ?
- (*unitsptr / base) :
- (-1 - (-1 - *unitsptr) / base);
- *unitsptr -= tensdelta * base;
- return increment_overflow(tensptr, tensdelta);
-}
-
-static int
-long_normalize_overflow(long *const tensptr, int *const unitsptr,
- const int base)
-{
- int tensdelta;
-
- tensdelta = (*unitsptr >= 0) ?
- (*unitsptr / base) :
- (-1 - (-1 - *unitsptr) / base);
- *unitsptr -= tensdelta * base;
- return long_increment_overflow(tensptr, tensdelta);
-}
-
-static int
-tmcomp(const struct tm *const atmp, const struct tm *const btmp)
-{
- int result;
-
- if ((result = (atmp->tm_year - btmp->tm_year)) == 0 &&
- (result = (atmp->tm_mon - btmp->tm_mon)) == 0 &&
- (result = (atmp->tm_mday - btmp->tm_mday)) == 0 &&
- (result = (atmp->tm_hour - btmp->tm_hour)) == 0 &&
- (result = (atmp->tm_min - btmp->tm_min)) == 0)
- result = atmp->tm_sec - btmp->tm_sec;
- return result;
-}
-
-static time_t
-time2sub(const timezone_t sp, struct tm *const tmp, subfun_t funcp,
- const long offset, int *const okayp, const int do_norm_secs)
-{
- int dir;
- int i, j;
- int saved_seconds;
- long li;
- time_t lo;
- time_t hi;
-#ifdef NO_ERROR_IN_DST_GAP
- time_t ilo;
-#endif
- long y;
- time_t newt;
- time_t t;
- struct tm yourtm, mytm;
-
- *okayp = FALSE;
- yourtm = *tmp;
-#ifdef NO_ERROR_IN_DST_GAP
-again:
-#endif
- if (do_norm_secs) {
- if (normalize_overflow(&yourtm.tm_min, &yourtm.tm_sec,
- SECSPERMIN))
- goto overflow;
- }
- if (normalize_overflow(&yourtm.tm_hour, &yourtm.tm_min, MINSPERHOUR))
- goto overflow;
- if (normalize_overflow(&yourtm.tm_mday, &yourtm.tm_hour, HOURSPERDAY))
- goto overflow;
- y = yourtm.tm_year;
- if (long_normalize_overflow(&y, &yourtm.tm_mon, MONSPERYEAR))
- goto overflow;
- /*
- ** Turn y into an actual year number for now.
- ** It is converted back to an offset from TM_YEAR_BASE later.
- */
- if (long_increment_overflow(&y, TM_YEAR_BASE))
- goto overflow;
- while (yourtm.tm_mday <= 0) {
- if (long_increment_overflow(&y, -1))
- goto overflow;
- li = y + (1 < yourtm.tm_mon);
- yourtm.tm_mday += year_lengths[isleap(li)];
- }
- while (yourtm.tm_mday > DAYSPERLYEAR) {
- li = y + (1 < yourtm.tm_mon);
- yourtm.tm_mday -= year_lengths[isleap(li)];
- if (long_increment_overflow(&y, 1))
- goto overflow;
- }
- for ( ; ; ) {
- i = mon_lengths[isleap(y)][yourtm.tm_mon];
- if (yourtm.tm_mday <= i)
- break;
- yourtm.tm_mday -= i;
- if (++yourtm.tm_mon >= MONSPERYEAR) {
- yourtm.tm_mon = 0;
- if (long_increment_overflow(&y, 1))
- goto overflow;
- }
- }
- if (long_increment_overflow(&y, -TM_YEAR_BASE))
- goto overflow;
- yourtm.tm_year = (int)y;
- if (yourtm.tm_year != y)
- goto overflow;
- if (yourtm.tm_sec >= 0 && yourtm.tm_sec < SECSPERMIN)
- saved_seconds = 0;
- else if (y + TM_YEAR_BASE < EPOCH_YEAR) {
- /*
- ** We can't set tm_sec to 0, because that might push the
- ** time below the minimum representable time.
- ** Set tm_sec to 59 instead.
- ** This assumes that the minimum representable time is
- ** not in the same minute that a leap second was deleted from,
- ** which is a safer assumption than using 58 would be.
- */
- if (increment_overflow(&yourtm.tm_sec, 1 - SECSPERMIN))
- goto overflow;
- saved_seconds = yourtm.tm_sec;
- yourtm.tm_sec = SECSPERMIN - 1;
- } else {
- saved_seconds = yourtm.tm_sec;
- yourtm.tm_sec = 0;
- }
- /*
- ** Do a binary search (this works whatever time_t's type is).
- */
- /* LINTED const not */
- if (!TYPE_SIGNED(time_t)) {
- lo = 0;
- hi = lo - 1;
- /* LINTED const not */
- } else {
- lo = 1;
- for (i = 0; i < (int) TYPE_BIT(time_t) - 1; ++i)
- lo *= 2;
- hi = -(lo + 1);
- }
-#ifdef NO_ERROR_IN_DST_GAP
- ilo = lo;
-#endif
- for ( ; ; ) {
- t = lo / 2 + hi / 2;
- if (t < lo)
- t = lo;
- else if (t > hi)
- t = hi;
- if ((*funcp)(sp, &t, offset, &mytm) == NULL) {
- /*
- ** Assume that t is too extreme to be represented in
- ** a struct tm; arrange things so that it is less
- ** extreme on the next pass.
- */
- dir = (t > 0) ? 1 : -1;
- } else dir = tmcomp(&mytm, &yourtm);
- if (dir != 0) {
- if (t == lo) {
- ++t;
- if (t <= lo)
- goto overflow;
- ++lo;
- } else if (t == hi) {
- --t;
- if (t >= hi)
- goto overflow;
- --hi;
- }
-#ifdef NO_ERROR_IN_DST_GAP
- if (ilo != lo && lo - 1 == hi && yourtm.tm_isdst < 0 &&
- do_norm_secs) {
- for (i = sp->typecnt - 1; i >= 0; --i) {
- for (j = sp->typecnt - 1; j >= 0; --j) {
- time_t off;
- if (sp->ttis[j].tt_isdst ==
- sp->ttis[i].tt_isdst)
- continue;
- off = sp->ttis[j].tt_gmtoff -
- sp->ttis[i].tt_gmtoff;
- yourtm.tm_sec += off < 0 ?
- -off : off;
- goto again;
- }
- }
- }
-#endif
- if (lo > hi)
- goto invalid;
- if (dir > 0)
- hi = t;
- else lo = t;
- continue;
- }
- if (yourtm.tm_isdst < 0 || mytm.tm_isdst == yourtm.tm_isdst)
- break;
- /*
- ** Right time, wrong type.
- ** Hunt for right time, right type.
- ** It's okay to guess wrong since the guess
- ** gets checked.
- */
- if (sp == NULL)
- goto invalid;
- for (i = sp->typecnt - 1; i >= 0; --i) {
- if (sp->ttis[i].tt_isdst != yourtm.tm_isdst)
- continue;
- for (j = sp->typecnt - 1; j >= 0; --j) {
- if (sp->ttis[j].tt_isdst == yourtm.tm_isdst)
- continue;
- newt = (time_t)(t + sp->ttis[j].tt_gmtoff -
- sp->ttis[i].tt_gmtoff);
- if ((*funcp)(sp, &newt, offset, &mytm) == NULL)
- continue;
- if (tmcomp(&mytm, &yourtm) != 0)
- continue;
- if (mytm.tm_isdst != yourtm.tm_isdst)
- continue;
- /*
- ** We have a match.
- */
- t = newt;
- goto label;
- }
- }
- goto invalid;
- }
-label:
- newt = t + saved_seconds;
- if ((newt < t) != (saved_seconds < 0))
- goto overflow;
- t = newt;
- if ((*funcp)(sp, &t, offset, tmp)) {
- *okayp = TRUE;
- return t;
- }
-overflow:
- errno = EOVERFLOW;
- return WRONG;
-invalid:
- errno = EINVAL;
- return WRONG;
-}
-
-static time_t
-time2(const timezone_t sp, struct tm *const tmp, subfun_t funcp,
- const long offset, int *const okayp)
-{
- time_t t;
-
- /*
- ** First try without normalization of seconds
- ** (in case tm_sec contains a value associated with a leap second).
- ** If that fails, try with normalization of seconds.
- */
- t = time2sub(sp, tmp, funcp, offset, okayp, FALSE);
- return *okayp ? t : time2sub(sp, tmp, funcp, offset, okayp, TRUE);
-}
-
-static time_t
-time1(const timezone_t sp, struct tm *const tmp, subfun_t funcp,
- const long offset)
-{
- time_t t;
- int samei, otheri;
- int sameind, otherind;
- int i;
- int nseen;
- int seen[TZ_MAX_TYPES];
- int types[TZ_MAX_TYPES];
- int okay;
-
- if (tmp == NULL) {
- errno = EINVAL;
- return WRONG;
- }
- if (tmp->tm_isdst > 1)
- tmp->tm_isdst = 1;
- t = time2(sp, tmp, funcp, offset, &okay);
-#ifdef PCTS
- /*
- ** PCTS code courtesy Grant Sullivan.
- */
- if (okay)
- return t;
- if (tmp->tm_isdst < 0)
- tmp->tm_isdst = 0; /* reset to std and try again */
-#endif /* defined PCTS */
-#ifndef PCTS
- if (okay || tmp->tm_isdst < 0)
- return t;
-#endif /* !defined PCTS */
- /*
- ** We're supposed to assume that somebody took a time of one type
- ** and did some math on it that yielded a "struct tm" that's bad.
- ** We try to divine the type they started from and adjust to the
- ** type they need.
- */
- if (sp == NULL) {
- errno = EINVAL;
- return WRONG;
- }
- for (i = 0; i < sp->typecnt; ++i)
- seen[i] = FALSE;
- nseen = 0;
- for (i = sp->timecnt - 1; i >= 0; --i)
- if (!seen[sp->types[i]]) {
- seen[sp->types[i]] = TRUE;
- types[nseen++] = sp->types[i];
- }
- for (sameind = 0; sameind < nseen; ++sameind) {
- samei = types[sameind];
- if (sp->ttis[samei].tt_isdst != tmp->tm_isdst)
- continue;
- for (otherind = 0; otherind < nseen; ++otherind) {
- otheri = types[otherind];
- if (sp->ttis[otheri].tt_isdst == tmp->tm_isdst)
- continue;
- tmp->tm_sec += (int)(sp->ttis[otheri].tt_gmtoff -
- sp->ttis[samei].tt_gmtoff);
- tmp->tm_isdst = !tmp->tm_isdst;
- t = time2(sp, tmp, funcp, offset, &okay);
- if (okay)
- return t;
- tmp->tm_sec -= (int)(sp->ttis[otheri].tt_gmtoff -
- sp->ttis[samei].tt_gmtoff);
- tmp->tm_isdst = !tmp->tm_isdst;
- }
- }
- errno = EOVERFLOW;
- return WRONG;
-}
-
-extern "C" time_t
-mktime(struct tm *const tmp)
-{
- time_t result;
-
- tzset_guard.init ("tzset_guard")->acquire ();
- tzset_unlocked();
- result = time1(lclptr, tmp, localsub, 0L);
- tzset_guard.release ();
- return result;
-}
-
-#ifdef STD_INSPIRED
-
-extern "C" time_t
-timelocal(struct tm *const tmp)
-{
- if (tmp != NULL)
- tmp->tm_isdst = -1; /* in case it wasn't initialized */
- return mktime(tmp);
-}
-
-extern "C" time_t
-timegm(struct tm *const tmp)
-{
- time_t t;
-
- if (tmp != NULL)
- tmp->tm_isdst = 0;
- t = time1(gmtptr, tmp, gmtsub, 0L);
- return t;
-}
-
-extern "C" time_t
-timeoff(struct tm *const tmp, const long offset)
-{
- time_t t;
-
- if (tmp != NULL)
- tmp->tm_isdst = 0;
- t = time1(gmtptr, tmp, gmtsub, offset);
- return t;
-}
-
-#endif /* defined STD_INSPIRED */
-
-#ifdef CMUCS
-
-/*
-** The following is supplied for compatibility with
-** previous versions of the CMUCS runtime library.
-*/
-
-extern "C" long
-gtime(struct tm *const tmp)
-{
- const time_t t = mktime(tmp);
-
- if (t == WRONG)
- return -1;
- return t;
-}
-
-#endif /* defined CMUCS */
-
-/*
-** XXX--is the below the right way to conditionalize??
-*/
-
-#ifdef STD_INSPIRED
-
-/*
-** IEEE Std 1003.1-1988 (POSIX) legislates that 536457599
-** shall correspond to "Wed Dec 31 23:59:59 UTC 1986", which
-** is not the case if we are accounting for leap seconds.
-** So, we provide the following conversion routines for use
-** when exchanging timestamps with POSIX conforming systems.
-*/
-
-static long
-leapcorr(const timezone_t sp, time_t *timep)
-{
- struct lsinfo * lp;
- int i;
-
- i = sp->leapcnt;
- while (--i >= 0) {
- lp = &sp->lsis[i];
- if (*timep >= lp->ls_trans)
- return lp->ls_corr;
- }
- return 0;
-}
-
-extern "C" time_t
-time2posix(time_t t)
-{
- time_t result;
- tzset_guard.init ("tzset_guard")->acquire ();
- tzset_unlocked();
- result = t - leapcorr(lclptr, &t);
- tzset_guard.release ();
- return (result);
-}
-
-extern "C" time_t
-posix2time(time_t t)
-{
- time_t x;
- time_t y;
-
- tzset_guard.init ("tzset_guard")->acquire ();
- tzset_unlocked();
- /*
- ** For a positive leap second hit, the result
- ** is not unique. For a negative leap second
- ** hit, the corresponding time doesn't exist,
- ** so we return an adjacent second.
- */
- x = (time_t)(t + leapcorr(lclptr, &t));
- y = (time_t)(x - leapcorr(lclptr, &x));
- if (y < t) {
- do {
- x++;
- y = (time_t)(x - leapcorr(lclptr, &x));
- } while (y < t);
- if (t != y) {
- return x - 1;
- }
- } else if (y > t) {
- do {
- --x;
- y = (time_t)(x - leapcorr(lclptr, &x));
- } while (y > t);
- if (t != y) {
- return x + 1;
- }
- }
- tzset_guard.release ();
- return x;
-}
-
-#endif /* defined STD_INSPIRED */
-
-extern "C" long
-__cygwin_gettzoffset (const struct tm *tmp)
-{
-#ifdef TM_GMTOFF
- if (CYGWIN_VERSION_CHECK_FOR_EXTRA_TM_MEMBERS)
- return tmp->TM_GMTOFF;
-#endif /* defined TM_GMTOFF */
- __tzinfo_type *tz = __gettzinfo ();
- /* The sign of this is exactly opposite the envvar TZ. We
- could directly use the global _timezone for tm_isdst==0,
- but have to use __tzrule for daylight savings. */
- long offset = -tz->__tzrule[tmp->tm_isdst > 0].offset;
- return offset;
-}
-
-extern "C" const char *
-__cygwin_gettzname (const struct tm *tmp)
-{
-#ifdef TM_ZONE
- if (CYGWIN_VERSION_CHECK_FOR_EXTRA_TM_MEMBERS)
- return tmp->TM_ZONE;
-#endif
- return _tzname[tmp->tm_isdst > 0];
-}
+++ /dev/null
-/* generated with bin2h from zoneinfo/posixrules */
-
-static NO_COPY unsigned char _posixrules_data[] = {
-0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,0,0,0,0,0,
-0,1,16,0,0,0,2,0,0,0,8,0,151,254,240,1,135,225,224,2,119,224,240,3,112,254,96,4,96,253,112,5,80,
-224,96,6,64,223,112,7,48,194,96,7,141,25,112,9,16,164,96,9,173,148,240,10,240,134,96,11,224,133,112,12,217,162,
-224,13,192,103,112,14,185,132,224,15,169,131,240,16,153,102,224,17,137,101,240,18,121,72,224,19,105,71,240,20,89,42,224,
-21,73,41,240,22,57,12,224,23,41,11,240,24,34,41,96,25,8,237,240,26,2,11,96,26,242,10,112,27,225,237,96,28,
-209,236,112,29,193,207,96,30,177,206,112,31,161,177,96,32,118,0,240,33,129,147,96,34,85,226,240,35,106,175,224,36,53,
-196,240,37,74,145,224,38,21,166,240,39,42,115,224,39,254,195,112,41,10,85,224,41,222,165,112,42,234,55,224,43,190,135,
-112,44,211,84,96,45,158,105,112,46,179,54,96,47,126,75,112,48,147,24,96,49,103,103,240,50,114,250,96,51,71,73,240,
-52,82,220,96,53,39,43,240,54,50,190,96,55,7,13,240,56,27,218,224,56,230,239,240,57,251,188,224,58,198,209,240,59,
-219,158,224,60,175,238,112,61,187,128,224,62,143,208,112,63,155,98,224,64,111,178,112,65,132,127,96,66,79,148,112,67,100,
-97,96,68,47,118,112,69,68,67,96,70,15,88,112,71,36,37,96,71,248,116,240,73,4,7,96,73,216,86,240,74,227,233,
-96,75,184,56,240,76,205,5,224,77,152,26,240,78,172,231,224,79,119,252,240,80,140,201,224,81,97,25,112,82,108,171,224,
-83,64,251,112,84,76,141,224,85,32,221,112,86,44,111,224,87,0,191,112,88,21,140,96,88,224,161,112,89,245,110,96,90,
-192,131,112,91,213,80,96,92,169,159,240,93,181,50,96,94,137,129,240,95,149,20,96,96,105,99,240,97,126,48,224,98,73,
-69,240,99,94,18,224,100,41,39,240,101,61,244,224,102,18,68,112,103,29,214,224,103,242,38,112,104,253,184,224,105,210,8,
-112,106,221,154,224,107,177,234,112,108,198,183,96,109,145,204,112,110,166,153,96,111,113,174,112,112,134,123,96,113,90,202,240,
-114,102,93,96,115,58,172,240,116,70,63,96,117,26,142,240,118,47,91,224,118,250,112,240,120,15,61,224,120,218,82,240,121,
-239,31,224,122,186,52,240,123,207,1,224,124,163,81,112,125,174,227,224,126,131,51,112,127,142,197,224,128,99,21,112,129,119,
-226,96,130,66,247,112,131,87,196,96,132,34,217,112,133,55,166,96,134,11,245,240,135,23,136,96,135,235,215,240,136,247,106,
-96,137,203,185,240,138,215,76,96,139,171,155,240,140,192,104,224,141,139,125,240,142,160,74,224,143,107,95,240,144,128,44,224,
-145,84,124,112,146,96,14,224,147,52,94,112,148,63,240,224,149,20,64,112,150,41,13,96,150,244,34,112,152,8,239,96,152,
-212,4,112,153,232,209,96,154,189,32,240,155,200,179,96,156,157,2,240,157,168,149,96,158,124,228,240,159,136,119,96,160,92,
-198,240,161,113,147,224,162,60,168,240,163,81,117,224,164,28,138,240,165,49,87,224,166,5,167,112,167,17,57,224,167,229,137,
-112,168,241,27,224,169,197,107,112,170,218,56,96,171,165,77,112,172,186,26,96,173,133,47,112,174,153,252,96,175,101,17,112,
-176,121,222,96,177,78,45,240,178,89,192,96,179,46,15,240,180,57,162,96,181,13,241,240,182,34,190,224,182,237,211,240,184,
-2,160,224,184,205,181,240,185,226,130,224,186,182,210,112,187,194,100,224,188,150,180,112,189,162,70,224,190,118,150,112,191,130,
-40,224,192,86,120,112,193,107,69,96,194,54,90,112,195,75,39,96,196,22,60,112,197,43,9,96,197,255,88,240,199,10,235,
-96,199,223,58,240,200,234,205,96,201,191,28,240,202,211,233,224,203,158,254,240,204,179,203,224,205,126,224,240,206,147,173,224,
-207,103,253,112,208,115,143,224,209,71,223,112,210,83,113,224,211,39,193,112,212,51,83,224,213,7,163,112,214,28,112,96,214,
-231,133,112,215,252,82,96,216,199,103,112,217,220,52,96,218,176,131,240,219,188,22,96,220,144,101,240,221,155,248,96,222,112,
-71,240,223,133,20,224,224,80,41,240,225,100,246,224,226,48,11,240,227,68,216,224,228,15,237,240,229,36,186,224,229,249,10,
-112,231,4,156,224,231,216,236,112,232,228,126,224,233,184,206,112,234,205,155,96,235,152,176,112,236,173,125,96,237,120,146,112,
-238,141,95,96,239,97,174,240,240,109,65,96,241,65,144,240,242,77,35,96,243,33,114,240,244,45,5,96,245,1,84,240,246,
-22,33,224,246,225,54,240,247,246,3,224,248,193,24,240,249,213,229,224,250,160,250,240,251,181,199,224,252,138,23,112,253,149,
-169,224,254,105,249,112,255,117,139,224,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,
-1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,
-0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,
-1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,
-0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,
-1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,
-0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,
-1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,
-0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,255,255,199,192,1,0,255,255,185,176,0,4,69,68,84,
-0,69,83,84,0,0,0
-};
git://sourceware.org / newlib-cygwin.git / commitdiff