diff options
| -rw-r--r-- | src/timezone/asctime.c | 150 | ||||
| -rw-r--r-- | src/timezone/difftime.c | 168 | ||||
| -rw-r--r-- | src/timezone/ialloc.c | 162 | ||||
| -rw-r--r-- | src/timezone/localtime.c | 3424 | ||||
| -rw-r--r-- | src/timezone/pgtz.h | 2 | ||||
| -rw-r--r-- | src/timezone/private.h | 588 | ||||
| -rw-r--r-- | src/timezone/scheck.c | 118 | ||||
| -rw-r--r-- | src/timezone/tzfile.h | 376 | ||||
| -rw-r--r-- | src/timezone/zic.c | 4516 |
9 files changed, 4751 insertions, 4753 deletions
diff --git a/src/timezone/asctime.c b/src/timezone/asctime.c index 31a6275edc9..d19e1dc1925 100644 --- a/src/timezone/asctime.c +++ b/src/timezone/asctime.c @@ -1,75 +1,75 @@ -#include "pgtz.h"
-/*
-** This file is in the public domain, so clarified as of
-** 1996-06-05 by Arthur David Olson (arthur_david_olson@nih.gov).
-*/
-
-#ifndef lint
-#ifndef NOID
-static char elsieid[] = "@(#)asctime.c 7.9";
-#endif /* !defined NOID */
-#endif /* !defined lint */
-
-/*LINTLIBRARY*/
-
-#include "private.h"
-#include "tzfile.h"
-
-/*
-** A la ISO/IEC 9945-1, ANSI/IEEE Std 1003.1, Second Edition, 1996-07-12.
-*/
-
-char *
-asctime_r(timeptr, buf)
-register const struct tm * timeptr;
-char * buf;
-{
- static const char wday_name[][3] = {
- "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"
- };
- static const char mon_name[][3] = {
- "Jan", "Feb", "Mar", "Apr", "May", "Jun",
- "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
- };
- register const char * wn;
- register const char * mn;
-
- if (timeptr->tm_wday < 0 || timeptr->tm_wday >= DAYSPERWEEK)
- wn = "???";
- else wn = wday_name[timeptr->tm_wday];
- if (timeptr->tm_mon < 0 || timeptr->tm_mon >= MONSPERYEAR)
- mn = "???";
- else mn = mon_name[timeptr->tm_mon];
- /*
- ** The X3J11-suggested format is
- ** "%.3s %.3s%3d %02.2d:%02.2d:%02.2d %d\n"
- ** Since the .2 in 02.2d is ignored, we drop it.
- */
- (void) sprintf(buf, "%.3s %.3s%3d %02d:%02d:%02d %d\n",
- wn, mn,
- timeptr->tm_mday, timeptr->tm_hour,
- timeptr->tm_min, timeptr->tm_sec,
- TM_YEAR_BASE + timeptr->tm_year);
- return buf;
-}
-
-/*
-** A la X3J11, with core dump avoidance.
-*/
-
-char *
-asctime(timeptr)
-register const struct tm * timeptr;
-{
- /*
- ** Big enough for something such as
- ** ??? ???-2147483648 -2147483648:-2147483648:-2147483648 -2147483648\n
- ** (two three-character abbreviations, five strings denoting integers,
- ** three explicit spaces, two explicit colons, a newline,
- ** and a trailing ASCII nul).
- */
- static char result[3 * 2 + 5 * INT_STRLEN_MAXIMUM(int) +
- 3 + 2 + 1 + 1];
-
- return asctime_r(timeptr, result);
-}
+#include "pgtz.h" +/* +** This file is in the public domain, so clarified as of +** 1996-06-05 by Arthur David Olson (arthur_david_olson@nih.gov). +*/ + +#ifndef lint +#ifndef NOID +static char elsieid[] = "@(#)asctime.c 7.9"; +#endif /* !defined NOID */ +#endif /* !defined lint */ + +/*LINTLIBRARY*/ + +#include "private.h" +#include "tzfile.h" + +/* +** A la ISO/IEC 9945-1, ANSI/IEEE Std 1003.1, Second Edition, 1996-07-12. +*/ + +char * +asctime_r(timeptr, buf) +register const struct tm * timeptr; +char * buf; +{ + static const char wday_name[][3] = { + "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" + }; + static const char mon_name[][3] = { + "Jan", "Feb", "Mar", "Apr", "May", "Jun", + "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" + }; + register const char * wn; + register const char * mn; + + if (timeptr->tm_wday < 0 || timeptr->tm_wday >= DAYSPERWEEK) + wn = "???"; + else wn = wday_name[timeptr->tm_wday]; + if (timeptr->tm_mon < 0 || timeptr->tm_mon >= MONSPERYEAR) + mn = "???"; + else mn = mon_name[timeptr->tm_mon]; + /* + ** The X3J11-suggested format is + ** "%.3s %.3s%3d %02.2d:%02.2d:%02.2d %d\n" + ** Since the .2 in 02.2d is ignored, we drop it. + */ + (void) sprintf(buf, "%.3s %.3s%3d %02d:%02d:%02d %d\n", + wn, mn, + timeptr->tm_mday, timeptr->tm_hour, + timeptr->tm_min, timeptr->tm_sec, + TM_YEAR_BASE + timeptr->tm_year); + return buf; +} + +/* +** A la X3J11, with core dump avoidance. +*/ + +char * +asctime(timeptr) +register const struct tm * timeptr; +{ + /* + ** Big enough for something such as + ** ??? ???-2147483648 -2147483648:-2147483648:-2147483648 -2147483648\n + ** (two three-character abbreviations, five strings denoting integers, + ** three explicit spaces, two explicit colons, a newline, + ** and a trailing ASCII nul). + */ + static char result[3 * 2 + 5 * INT_STRLEN_MAXIMUM(int) + + 3 + 2 + 1 + 1]; + + return asctime_r(timeptr, result); +} diff --git a/src/timezone/difftime.c b/src/timezone/difftime.c index 636640d6f57..57b88deafee 100644 --- a/src/timezone/difftime.c +++ b/src/timezone/difftime.c @@ -1,84 +1,84 @@ -#include "pgtz.h"
-/*
-** This file is in the public domain, so clarified as of
-** June 5, 1996 by Arthur David Olson (arthur_david_olson@nih.gov).
-*/
-
-#ifndef lint
-#ifndef NOID
-static char elsieid[] = "@(#)difftime.c 7.9";
-#endif /* !defined NOID */
-#endif /* !defined lint */
-
-/*LINTLIBRARY*/
-
-#include "private.h"
-
-/*
-** Algorithm courtesy Paul Eggert (eggert@twinsun.com).
-*/
-
-#ifdef HAVE_LONG_DOUBLE
-#define long_double long double
-#endif /* defined HAVE_LONG_DOUBLE */
-#ifndef HAVE_LONG_DOUBLE
-#define long_double double
-#endif /* !defined HAVE_LONG_DOUBLE */
-
-double
-difftime(time1, time0)
-const time_t time1;
-const time_t time0;
-{
- time_t delta;
- time_t hibit;
-
- {
- time_t tt;
- double d;
- long_double ld;
-
- if (sizeof tt < sizeof d)
- return (double) time1 - (double) time0;
- if (sizeof tt < sizeof ld)
- return (long_double) time1 - (long_double) time0;
- }
- if (time1 < time0)
- return -difftime(time0, time1);
- /*
- ** As much as possible, avoid loss of precision
- ** by computing the difference before converting to double.
- */
- delta = time1 - time0;
- if (delta >= 0)
- return delta;
- /*
- ** Repair delta overflow.
- */
- hibit = (~ (time_t) 0) << (TYPE_BIT(time_t) - 1);
- /*
- ** The following expression rounds twice, which means
- ** the result may not be the closest to the true answer.
- ** For example, suppose time_t is 64-bit signed int,
- ** long_double is IEEE 754 double with default rounding,
- ** time1 = 9223372036854775807 and time0 = -1536.
- ** Then the true difference is 9223372036854777343,
- ** which rounds to 9223372036854777856
- ** with a total error of 513.
- ** But delta overflows to -9223372036854774273,
- ** which rounds to -9223372036854774784, and correcting
- ** this by subtracting 2 * (long_double) hibit
- ** (i.e. by adding 2**64 = 18446744073709551616)
- ** yields 9223372036854776832, which
- ** rounds to 9223372036854775808
- ** with a total error of 1535 instead.
- ** This problem occurs only with very large differences.
- ** It's too painful to fix this portably.
- ** We are not alone in this problem;
- ** some C compilers round twice when converting
- ** large unsigned types to small floating types,
- ** so if time_t is unsigned the "return delta" above
- ** has the same double-rounding problem with those compilers.
- */
- return delta - 2 * (long_double) hibit;
-}
+#include "pgtz.h" +/* +** This file is in the public domain, so clarified as of +** June 5, 1996 by Arthur David Olson (arthur_david_olson@nih.gov). +*/ + +#ifndef lint +#ifndef NOID +static char elsieid[] = "@(#)difftime.c 7.9"; +#endif /* !defined NOID */ +#endif /* !defined lint */ + +/*LINTLIBRARY*/ + +#include "private.h" + +/* +** Algorithm courtesy Paul Eggert (eggert@twinsun.com). +*/ + +#ifdef HAVE_LONG_DOUBLE +#define long_double long double +#endif /* defined HAVE_LONG_DOUBLE */ +#ifndef HAVE_LONG_DOUBLE +#define long_double double +#endif /* !defined HAVE_LONG_DOUBLE */ + +double +difftime(time1, time0) +const time_t time1; +const time_t time0; +{ + time_t delta; + time_t hibit; + + { + time_t tt; + double d; + long_double ld; + + if (sizeof tt < sizeof d) + return (double) time1 - (double) time0; + if (sizeof tt < sizeof ld) + return (long_double) time1 - (long_double) time0; + } + if (time1 < time0) + return -difftime(time0, time1); + /* + ** As much as possible, avoid loss of precision + ** by computing the difference before converting to double. + */ + delta = time1 - time0; + if (delta >= 0) + return delta; + /* + ** Repair delta overflow. + */ + hibit = (~ (time_t) 0) << (TYPE_BIT(time_t) - 1); + /* + ** The following expression rounds twice, which means + ** the result may not be the closest to the true answer. + ** For example, suppose time_t is 64-bit signed int, + ** long_double is IEEE 754 double with default rounding, + ** time1 = 9223372036854775807 and time0 = -1536. + ** Then the true difference is 9223372036854777343, + ** which rounds to 9223372036854777856 + ** with a total error of 513. + ** But delta overflows to -9223372036854774273, + ** which rounds to -9223372036854774784, and correcting + ** this by subtracting 2 * (long_double) hibit + ** (i.e. by adding 2**64 = 18446744073709551616) + ** yields 9223372036854776832, which + ** rounds to 9223372036854775808 + ** with a total error of 1535 instead. + ** This problem occurs only with very large differences. + ** It's too painful to fix this portably. + ** We are not alone in this problem; + ** some C compilers round twice when converting + ** large unsigned types to small floating types, + ** so if time_t is unsigned the "return delta" above + ** has the same double-rounding problem with those compilers. + */ + return delta - 2 * (long_double) hibit; +} diff --git a/src/timezone/ialloc.c b/src/timezone/ialloc.c index ea457aeb664..8a0c7015789 100644 --- a/src/timezone/ialloc.c +++ b/src/timezone/ialloc.c @@ -1,81 +1,81 @@ -#ifndef lint
-#ifndef NOID
-static char elsieid[] = "@(#)ialloc.c 8.29";
-#endif /* !defined NOID */
-#endif /* !defined lint */
-
-/*LINTLIBRARY*/
-
-#include "private.h"
-
-#define nonzero(n) (((n) == 0) ? 1 : (n))
-
-char *
-imalloc(n)
-const int n;
-{
- return malloc((size_t) nonzero(n));
-}
-
-char *
-icalloc(nelem, elsize)
-int nelem;
-int elsize;
-{
- if (nelem == 0 || elsize == 0)
- nelem = elsize = 1;
- return calloc((size_t) nelem, (size_t) elsize);
-}
-
-void *
-irealloc(pointer, size)
-void * const pointer;
-const int size;
-{
- if (pointer == NULL)
- return imalloc(size);
- return realloc((void *) pointer, (size_t) nonzero(size));
-}
-
-char *
-icatalloc(old, new)
-char * const old;
-const char * const new;
-{
- register char * result;
- register int oldsize, newsize;
-
- newsize = (new == NULL) ? 0 : strlen(new);
- if (old == NULL)
- oldsize = 0;
- else if (newsize == 0)
- return old;
- else oldsize = strlen(old);
- if ((result = irealloc(old, oldsize + newsize + 1)) != NULL)
- if (new != NULL)
- (void) strcpy(result + oldsize, new);
- return result;
-}
-
-char *
-icpyalloc(string)
-const char * const string;
-{
- return icatalloc((char *) NULL, string);
-}
-
-void
-ifree(p)
-char * const p;
-{
- if (p != NULL)
- (void) free(p);
-}
-
-void
-icfree(p)
-char * const p;
-{
- if (p != NULL)
- (void) free(p);
-}
+#ifndef lint +#ifndef NOID +static char elsieid[] = "@(#)ialloc.c 8.29"; +#endif /* !defined NOID */ +#endif /* !defined lint */ + +/*LINTLIBRARY*/ + +#include "private.h" + +#define nonzero(n) (((n) == 0) ? 1 : (n)) + +char * +imalloc(n) +const int n; +{ + return malloc((size_t) nonzero(n)); +} + +char * +icalloc(nelem, elsize) +int nelem; +int elsize; +{ + if (nelem == 0 || elsize == 0) + nelem = elsize = 1; + return calloc((size_t) nelem, (size_t) elsize); +} + +void * +irealloc(pointer, size) +void * const pointer; +const int size; +{ + if (pointer == NULL) + return imalloc(size); + return realloc((void *) pointer, (size_t) nonzero(size)); +} + +char * +icatalloc(old, new) +char * const old; +const char * const new; +{ + register char * result; + register int oldsize, newsize; + + newsize = (new == NULL) ? 0 : strlen(new); + if (old == NULL) + oldsize = 0; + else if (newsize == 0) + return old; + else oldsize = strlen(old); + if ((result = irealloc(old, oldsize + newsize + 1)) != NULL) + if (new != NULL) + (void) strcpy(result + oldsize, new); + return result; +} + +char * +icpyalloc(string) +const char * const string; +{ + return icatalloc((char *) NULL, string); +} + +void +ifree(p) +char * const p; +{ + if (p != NULL) + (void) free(p); +} + +void +icfree(p) +char * const p; +{ + if (p != NULL) + (void) free(p); +} diff --git a/src/timezone/localtime.c b/src/timezone/localtime.c index 4f389b52dee..6936cd674be 100644 --- a/src/timezone/localtime.c +++ b/src/timezone/localtime.c @@ -1,1712 +1,1712 @@ -#include "pgtz.h"
-#undef open
-#define timezone pg_timezone
-#define USG_COMPAT
-extern time_t pg_timezone;
-/*
-** This file is in the public domain, so clarified as of
-** 1996-06-05 by Arthur David Olson (arthur_david_olson@nih.gov).
-*/
-
-#ifndef lint
-#ifndef NOID
-static char elsieid[] = "@(#)localtime.c 7.78";
-#endif /* !defined NOID */
-#endif /* !defined lint */
-
-/*
-** Leap second handling from Bradley White (bww@k.gp.cs.cmu.edu).
-** POSIX-style TZ environment variable handling from Guy Harris
-** (guy@auspex.com).
-*/
-
-/*LINTLIBRARY*/
-
-#include "private.h"
-#include "tzfile.h"
-#include "fcntl.h"
-
-/*
-** 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 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;
- time_t ats[TZ_MAX_TIMES];
- unsigned char types[TZ_MAX_TIMES];
- struct ttinfo ttis[TZ_MAX_TYPES];
- char chars[BIGGEST(BIGGEST(TZ_MAX_CHARS + 1, sizeof gmt),
- (2 * (MY_TZNAME_MAX + 1)))];
- struct lsinfo lsis[TZ_MAX_LEAPS];
-};
-
-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 */
-
-/*
-** Prototypes for static functions.
-*/
-
-static long detzcode P((const char * codep));
-static const char * getzname P((const char * strp));
-static const char * getnum P((const char * strp, int * nump, int min,
- int max));
-static const char * getsecs P((const char * strp, long * secsp));
-static const char * getoffset P((const char * strp, long * offsetp));
-static const char * getrule P((const char * strp, struct rule * rulep));
-static void gmtload P((struct state * sp));
-static void gmtsub P((const time_t * timep, long offset,
- struct tm * tmp));
-static void localsub P((const time_t * timep, long offset,
- struct tm * tmp));
-static int increment_overflow P((int * number, int delta));
-static int normalize_overflow P((int * tensptr, int * unitsptr,
- int base));
-static void settzname P((void));
-static time_t time1 P((struct tm * tmp,
- void(*funcp) P((const time_t *,
- long, struct tm *)),
- long offset));
-static time_t time2 P((struct tm *tmp,
- void(*funcp) P((const time_t *,
- long, struct tm*)),
- long offset, int * okayp));
-static time_t time2sub P((struct tm *tmp,
- void(*funcp) P((const time_t *,
- long, struct tm*)),
- long offset, int * okayp, int do_norm_secs));
-static void timesub P((const time_t * timep, long offset,
- const struct state * sp, struct tm * tmp));
-static int tmcomp P((const struct tm * atmp,
- const struct tm * btmp));
-static time_t transtime P((time_t janfirst, int year,
- const struct rule * rulep, long offset));
-static int tzload P((const char * name, struct state * sp));
-static int tzparse P((const char * name, struct state * sp,
- int lastditch));
-
-#ifdef ALL_STATE
-static struct state * lclptr;
-static struct state * gmtptr;
-#endif /* defined ALL_STATE */
-
-#ifndef ALL_STATE
-static struct state lclmem;
-static struct state gmtmem;
-#define lclptr (&lclmem)
-#define gmtptr (&gmtmem)
-#endif /* State Farm */
-
-#ifndef TZ_STRLEN_MAX
-#define TZ_STRLEN_MAX 255
-#endif /* !defined TZ_STRLEN_MAX */
-
-static char lcl_TZname[TZ_STRLEN_MAX + 1];
-static int lcl_is_set;
-static int gmt_is_set;
-
-char * tzname[2] = {
- wildabbr,
- 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 (eggert@twinsun.com) for noting this.
-*/
-
-static struct tm tm;
-
-#ifdef USG_COMPAT
-time_t timezone = 0;
-int daylight = 0;
-#endif /* defined USG_COMPAT */
-
-#ifdef ALTZONE
-time_t altzone = 0;
-#endif /* defined ALTZONE */
-
-static long
-detzcode(codep)
-const char * const codep;
-{
- register long result;
- register int i;
-
- result = (codep[0] & 0x80) ? ~0L : 0L;
- for (i = 0; i < 4; ++i)
- result = (result << 8) | (codep[i] & 0xff);
- return result;
-}
-
-static void
-settzname P((void))
-{
- register struct state * const sp = lclptr;
- register int i;
-
- tzname[0] = wildabbr;
- tzname[1] = wildabbr;
-#ifdef USG_COMPAT
- daylight = 0;
- timezone = 0;
-#endif /* defined USG_COMPAT */
-#ifdef ALTZONE
- altzone = 0;
-#endif /* defined ALTZONE */
-#ifdef ALL_STATE
- if (sp == NULL) {
- tzname[0] = tzname[1] = gmt;
- return;
- }
-#endif /* defined ALL_STATE */
- for (i = 0; i < sp->typecnt; ++i) {
- register 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 (i == 0 || !ttisp->tt_isdst)
- timezone = -(ttisp->tt_gmtoff);
-#endif /* defined USG_COMPAT */
-#ifdef ALTZONE
- if (i == 0 || 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) {
- register const struct ttinfo * const ttisp =
- &sp->ttis[
- sp->types[i]];
-
- tzname[ttisp->tt_isdst] =
- &sp->chars[ttisp->tt_abbrind];
- }
-}
-
-static int
-tzload(name, sp)
-register const char * name;
-register struct state * const sp;
-{
- register const char * p;
- register int i;
- register int fid;
-
- if (name == NULL && (name = TZDEFAULT) == NULL)
- return -1;
- {
- register 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)
- return -1;
- if ((strlen(p) + strlen(name) + 1) >= sizeof fullname)
- return -1;
- (void) strcpy(fullname, p);
- (void) strcat(fullname, "/");
- (void) strcat(fullname, name);
- /*
- ** Set doaccess if '.' (as in "../") shows up in name.
- */
- if (strchr(name, '.') != NULL)
- doaccess = TRUE;
- name = fullname;
- }
- if (doaccess && access(name, R_OK) != 0)
- return -1;
- if ((fid = open(name, OPEN_MODE)) == -1)
- return -1;
- }
- {
- struct tzhead * tzhp;
- union {
- struct tzhead tzhead;
- char buf[sizeof *sp + sizeof *tzhp];
- } u;
- int ttisstdcnt;
- int ttisgmtcnt;
-
- i = read(fid, u.buf, sizeof u.buf);
- if (close(fid) != 0)
- return -1;
- ttisstdcnt = (int) detzcode(u.tzhead.tzh_ttisstdcnt);
- ttisgmtcnt = (int) detzcode(u.tzhead.tzh_ttisgmtcnt);
- sp->leapcnt = (int) detzcode(u.tzhead.tzh_leapcnt);
- sp->timecnt = (int) detzcode(u.tzhead.tzh_timecnt);
- sp->typecnt = (int) detzcode(u.tzhead.tzh_typecnt);
- sp->charcnt = (int) detzcode(u.tzhead.tzh_charcnt);
- p = u.tzhead.tzh_charcnt + sizeof u.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))
- return -1;
- if (i - (p - u.buf) < sp->timecnt * 4 + /* ats */
- sp->timecnt + /* types */
- sp->typecnt * (4 + 2) + /* ttinfos */
- sp->charcnt + /* chars */
- sp->leapcnt * (4 + 4) + /* lsinfos */
- ttisstdcnt + /* ttisstds */
- ttisgmtcnt) /* ttisgmts */
- return -1;
- for (i = 0; i < sp->timecnt; ++i) {
- sp->ats[i] = detzcode(p);
- p += 4;
- }
- for (i = 0; i < sp->timecnt; ++i) {
- sp->types[i] = (unsigned char) *p++;
- if (sp->types[i] >= sp->typecnt)
- return -1;
- }
- for (i = 0; i < sp->typecnt; ++i) {
- register 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)
- return -1;
- ttisp->tt_abbrind = (unsigned char) *p++;
- if (ttisp->tt_abbrind < 0 ||
- ttisp->tt_abbrind > sp->charcnt)
- return -1;
- }
- 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) {
- register struct lsinfo * lsisp;
-
- lsisp = &sp->lsis[i];
- lsisp->ls_trans = detzcode(p);
- p += 4;
- lsisp->ls_corr = detzcode(p);
- p += 4;
- }
- for (i = 0; i < sp->typecnt; ++i) {
- register 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)
- return -1;
- }
- }
- for (i = 0; i < sp->typecnt; ++i) {
- register 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)
- return -1;
- }
- }
- }
- return 0;
-}
-
-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(strp)
-register const char * strp;
-{
- register char c;
-
- while ((c = *strp) != '\0' && !is_digit(c) && c != ',' && c != '-' &&
- c != '+')
- ++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(strp, nump, min, max)
-register const char * strp;
-int * const nump;
-const int min;
-const int max;
-{
- register char c;
- register int num;
-
- if (strp == NULL || !is_digit(c = *strp))
- return NULL;
- num = 0;
- do {
- num = num * 10 + (c - '0');
- if (num > max)
- return NULL; /* illegal value */
- c = *++strp;
- } while (is_digit(c));
- if (num < min)
- 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(strp, secsp)
-register 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(strp, offsetp)
-register const char * strp;
-long * const offsetp;
-{
- register 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(strp, rulep)
-const char * strp;
-register 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(janfirst, year, rulep, offset)
-const time_t janfirst;
-const int year;
-register const struct rule * const rulep;
-const long offset;
-{
- register int leapyear;
- register time_t value;
- register 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 = 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 = 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 += 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 += 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 value + rulep->r_time + offset;
-}
-
-/*
-** Given a POSIX section 8-style TZ string, fill in the rule tables as
-** appropriate.
-*/
-
-static int
-tzparse(name, sp, lastditch)
-const char * name;
-register struct state * const sp;
-const int lastditch;
-{
- const char * stdname;
- const char * dstname;
- size_t stdlen;
- size_t dstlen;
- long stdoffset;
- long dstoffset;
- register time_t * atp;
- register unsigned char * typep;
- register char * cp;
- register 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 {
- name = getzname(name);
- stdlen = name - stdname;
- if (stdlen < 3)
- return -1;
- if (*name == '\0')
- return -1;
- name = getoffset(name, &stdoffset);
- if (name == NULL)
- return -1;
- }
- load_result = tzload(TZDEFRULES, sp);
- if (load_result != 0)
- sp->leapcnt = 0; /* so, we're off a little */
- if (*name != '\0') {
- dstname = name;
- name = getzname(name);
- dstlen = name - dstname; /* length of DST zone name */
- if (dstlen < 3)
- return -1;
- 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;
- register int year;
- register 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 to 2037.
- */
- sp->timecnt = 2 * (2037 - EPOCH_YEAR + 1);
- if (sp->timecnt > TZ_MAX_TIMES)
- return -1;
- sp->ttis[0].tt_gmtoff = -dstoffset;
- sp->ttis[0].tt_isdst = 1;
- sp->ttis[0].tt_abbrind = 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;
- for (year = EPOCH_YEAR; year <= 2037; ++year) {
- 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 */
- }
- janfirst += year_lengths[isleap(year)] *
- SECSPERDAY;
- }
- } else {
- register long theirstdoffset;
- register long theirdstoffset;
- register long theiroffset;
- register int isdst;
- register int i;
- register 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] += dstoffset -
- theirdstoffset;
- } else {
- sp->ats[i] += stdoffset -
- theirstdoffset;
- }
- }
- theiroffset = -sp->ttis[j].tt_gmtoff;
- if (sp->ttis[j].tt_isdst)
- theirdstoffset = theiroffset;
- else theirstdoffset = theiroffset;
- }
- /*
- ** Finally, fill in ttis.
- ** ttisstd and ttisgmt need not be handled.
- */
- 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 = stdlen + 1;
- sp->typecnt = 2;
- }
- } else {
- dstlen = 0;
- sp->typecnt = 1; /* only standard time */
- sp->timecnt = 0;
- sp->ttis[0].tt_gmtoff = -stdoffset;
- sp->ttis[0].tt_isdst = 0;
- sp->ttis[0].tt_abbrind = 0;
- }
- sp->charcnt = stdlen + 1;
- if (dstlen != 0)
- sp->charcnt += 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(sp)
-struct state * const sp;
-{
- if (tzload(gmt, sp) != 0)
- (void) tzparse(gmt, sp, 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 P((void))
-{
- if (lcl_is_set < 0)
- return;
- lcl_is_set = -1;
-
-#ifdef ALL_STATE
- if (lclptr == NULL) {
- lclptr = (struct state *) malloc(sizeof *lclptr);
- if (lclptr == NULL) {
- settzname(); /* all we can do */
- return;
- }
- }
-#endif /* defined ALL_STATE */
- if (tzload((char *) NULL, lclptr) != 0)
- gmtload(lclptr);
- settzname();
-}
-
-void
-tzset P((void))
-{
- register const char * name;
-
- name = getenv("TZ");
- if (name == NULL) {
- tzsetwall();
- return;
- }
-
- if (lcl_is_set > 0 && strcmp(lcl_TZname, name) == 0)
- return;
- lcl_is_set = strlen(name) < sizeof lcl_TZname;
- if (lcl_is_set)
- (void) strcpy(lcl_TZname, name);
-
-#ifdef ALL_STATE
- if (lclptr == NULL) {
- lclptr = (struct state *) malloc(sizeof *lclptr);
- if (lclptr == NULL) {
- settzname(); /* all we can do */
- return;
- }
- }
-#endif /* defined ALL_STATE */
- 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) strcpy(lclptr->chars, gmt);
- } else if (tzload(name, lclptr) != 0)
- if (name[0] == ':' || tzparse(name, lclptr, FALSE) != 0)
- (void) gmtload(lclptr);
- settzname();
-}
-
-/*
-** 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 void
-localsub(timep, offset, tmp)
-const time_t * const timep;
-const long offset;
-struct tm * const tmp;
-{
- register struct state * sp;
- register const struct ttinfo * ttisp;
- register int i;
- const time_t t = *timep;
-
- sp = lclptr;
-#ifdef ALL_STATE
- if (sp == NULL) {
- gmtsub(timep, offset, tmp);
- return;
- }
-#endif /* defined ALL_STATE */
- if (sp->timecnt == 0 || t < sp->ats[0]) {
- i = 0;
- while (sp->ttis[i].tt_isdst)
- if (++i >= sp->typecnt) {
- i = 0;
- break;
- }
- } else {
- for (i = 1; i < sp->timecnt; ++i)
- if (t < sp->ats[i])
- break;
- i = sp->types[i - 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);
- */
- timesub(&t, ttisp->tt_gmtoff, sp, tmp);
- tmp->tm_isdst = ttisp->tt_isdst;
- tzname[tmp->tm_isdst] = &sp->chars[ttisp->tt_abbrind];
-#ifdef TM_ZONE
- tmp->TM_ZONE = &sp->chars[ttisp->tt_abbrind];
-#endif /* defined TM_ZONE */
-}
-
-struct tm *
-localtime(timep)
-const time_t * const timep;
-{
- tzset();
- localsub(timep, 0L, &tm);
- return &tm;
-}
-
-/*
-** Re-entrant version of localtime.
-*/
-
-struct tm *
-localtime_r(timep, tm)
-const time_t * const timep;
-struct tm * tm;
-{
- localsub(timep, 0L, tm);
- return tm;
-}
-
-/*
-** gmtsub is to gmtime as localsub is to localtime.
-*/
-
-static void
-gmtsub(timep, offset, tmp)
-const time_t * const timep;
-const long offset;
-struct tm * const tmp;
-{
- if (!gmt_is_set) {
- gmt_is_set = TRUE;
-#ifdef ALL_STATE
- gmtptr = (struct state *) malloc(sizeof *gmtptr);
- if (gmtptr != NULL)
-#endif /* defined ALL_STATE */
- gmtload(gmtptr);
- }
- timesub(timep, offset, gmtptr, 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 (offset != 0)
- tmp->TM_ZONE = wildabbr;
- else {
-#ifdef ALL_STATE
- if (gmtptr == NULL)
- tmp->TM_ZONE = gmt;
- else tmp->TM_ZONE = gmtptr->chars;
-#endif /* defined ALL_STATE */
-#ifndef ALL_STATE
- tmp->TM_ZONE = gmtptr->chars;
-#endif /* State Farm */
- }
-#endif /* defined TM_ZONE */
-}
-
-struct tm *
-gmtime(timep)
-const time_t * const timep;
-{
- gmtsub(timep, 0L, &tm);
- return &tm;
-}
-
-/*
-* Re-entrant version of gmtime.
-*/
-
-struct tm *
-gmtime_r(timep, tm)
-const time_t * const timep;
-struct tm * tm;
-{
- gmtsub(timep, 0L, tm);
- return tm;
-}
-
-#ifdef STD_INSPIRED
-
-struct tm *
-offtime(timep, offset)
-const time_t * const timep;
-const long offset;
-{
- gmtsub(timep, offset, &tm);
- return &tm;
-}
-
-#endif /* defined STD_INSPIRED */
-
-static void
-timesub(timep, offset, sp, tmp)
-const time_t * const timep;
-const long offset;
-register const struct state * const sp;
-register struct tm * const tmp;
-{
- register const struct lsinfo * lp;
- register long days;
- register long rem;
- register int y;
- register int yleap;
- register const int * ip;
- register long corr;
- register int hit;
- register int i;
-
- corr = 0;
- hit = 0;
-#ifdef ALL_STATE
- i = (sp == NULL) ? 0 : sp->leapcnt;
-#endif /* defined ALL_STATE */
-#ifndef ALL_STATE
- i = sp->leapcnt;
-#endif /* State Farm */
- 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;
- }
- }
- days = *timep / SECSPERDAY;
- rem = *timep % SECSPERDAY;
-#ifdef mc68k
- if (*timep == 0x80000000) {
- /*
- ** A 3B1 muffs the division on the most negative number.
- */
- days = -24855;
- rem = -11648;
- }
-#endif /* defined mc68k */
- rem += (offset - corr);
- while (rem < 0) {
- rem += SECSPERDAY;
- --days;
- }
- while (rem >= SECSPERDAY) {
- rem -= SECSPERDAY;
- ++days;
- }
- tmp->tm_hour = (int) (rem / SECSPERHOUR);
- rem = 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;
- tmp->tm_wday = (int) ((EPOCH_WDAY + days) % DAYSPERWEEK);
- if (tmp->tm_wday < 0)
- tmp->tm_wday += DAYSPERWEEK;
- y = EPOCH_YEAR;
-#define LEAPS_THRU_END_OF(y) ((y) / 4 - (y) / 100 + (y) / 400)
- while (days < 0 || days >= (long) year_lengths[yleap = isleap(y)]) {
- register int newy;
-
- newy = y + days / DAYSPERNYEAR;
- if (days < 0)
- --newy;
- days -= (newy - y) * DAYSPERNYEAR +
- LEAPS_THRU_END_OF(newy - 1) -
- LEAPS_THRU_END_OF(y - 1);
- y = newy;
- }
- tmp->tm_year = y - TM_YEAR_BASE;
- tmp->tm_yday = (int) days;
- ip = mon_lengths[yleap];
- for (tmp->tm_mon = 0; days >= (long) ip[tmp->tm_mon]; ++(tmp->tm_mon))
- days = days - (long) ip[tmp->tm_mon];
- tmp->tm_mday = (int) (days + 1);
- tmp->tm_isdst = 0;
-#ifdef TM_GMTOFF
- tmp->TM_GMTOFF = offset;
-#endif /* defined TM_GMTOFF */
-}
-
-char *
-ctime(timep)
-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))
-*/
- return asctime(localtime(timep));
-}
-
-char *
-ctime_r(timep, buf)
-const time_t * const timep;
-char * buf;
-{
- struct tm tm;
-
- return asctime_r(localtime_r(timep, &tm), 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.
-** [kridle@xinet.com as of 1996-01-16.]
-** 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 (-1)
-#endif /* !defined WRONG */
-
-/*
-** Simplified normalize logic courtesy Paul Eggert (eggert@twinsun.com).
-*/
-
-static int
-increment_overflow(number, delta)
-int * number;
-int delta;
-{
- int number0;
-
- number0 = *number;
- *number += delta;
- return (*number < number0) != (delta < 0);
-}
-
-static int
-normalize_overflow(tensptr, unitsptr, base)
-int * const tensptr;
-int * const unitsptr;
-const int base;
-{
- register int tensdelta;
-
- tensdelta = (*unitsptr >= 0) ?
- (*unitsptr / base) :
- (-1 - (-1 - *unitsptr) / base);
- *unitsptr -= tensdelta * base;
- return increment_overflow(tensptr, tensdelta);
-}
-
-static int
-tmcomp(atmp, btmp)
-register const struct tm * const atmp;
-register const struct tm * const btmp;
-{
- register 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(tmp, funcp, offset, okayp, do_norm_secs)
-struct tm * const tmp;
-void (* const funcp) P((const time_t*, long, struct tm*));
-const long offset;
-int * const okayp;
-const int do_norm_secs;
-{
- register const struct state * sp;
- register int dir;
- register int bits;
- register int i, j ;
- register int saved_seconds;
- time_t newt;
- time_t t;
- struct tm yourtm, mytm;
-
- *okayp = FALSE;
- yourtm = *tmp;
- if (do_norm_secs) {
- if (normalize_overflow(&yourtm.tm_min, &yourtm.tm_sec,
- SECSPERMIN))
- return WRONG;
- }
- if (normalize_overflow(&yourtm.tm_hour, &yourtm.tm_min, MINSPERHOUR))
- return WRONG;
- if (normalize_overflow(&yourtm.tm_mday, &yourtm.tm_hour, HOURSPERDAY))
- return WRONG;
- if (normalize_overflow(&yourtm.tm_year, &yourtm.tm_mon, MONSPERYEAR))
- return WRONG;
- /*
- ** Turn yourtm.tm_year into an actual year number for now.
- ** It is converted back to an offset from TM_YEAR_BASE later.
- */
- if (increment_overflow(&yourtm.tm_year, TM_YEAR_BASE))
- return WRONG;
- while (yourtm.tm_mday <= 0) {
- if (increment_overflow(&yourtm.tm_year, -1))
- return WRONG;
- i = yourtm.tm_year + (1 < yourtm.tm_mon);
- yourtm.tm_mday += year_lengths[isleap(i)];
- }
- while (yourtm.tm_mday > DAYSPERLYEAR) {
- i = yourtm.tm_year + (1 < yourtm.tm_mon);
- yourtm.tm_mday -= year_lengths[isleap(i)];
- if (increment_overflow(&yourtm.tm_year, 1))
- return WRONG;
- }
- for ( ; ; ) {
- i = mon_lengths[isleap(yourtm.tm_year)][yourtm.tm_mon];
- if (yourtm.tm_mday <= i)
- break;
- yourtm.tm_mday -= i;
- if (++yourtm.tm_mon >= MONSPERYEAR) {
- yourtm.tm_mon = 0;
- if (increment_overflow(&yourtm.tm_year, 1))
- return WRONG;
- }
- }
- if (increment_overflow(&yourtm.tm_year, -TM_YEAR_BASE))
- return WRONG;
- if (yourtm.tm_sec >= 0 && yourtm.tm_sec < SECSPERMIN)
- saved_seconds = 0;
- else if (yourtm.tm_year + 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))
- return WRONG;
- saved_seconds = yourtm.tm_sec;
- yourtm.tm_sec = SECSPERMIN - 1;
- } else {
- saved_seconds = yourtm.tm_sec;
- yourtm.tm_sec = 0;
- }
- /*
- ** Divide the search space in half
- ** (this works whether time_t is signed or unsigned).
- */
- bits = TYPE_BIT(time_t) - 1;
- /*
- ** If time_t is signed, then 0 is just above the median,
- ** assuming two's complement arithmetic.
- ** If time_t is unsigned, then (1 << bits) is just above the median.
- */
- t = TYPE_SIGNED(time_t) ? 0 : (((time_t) 1) << bits);
- for ( ; ; ) {
- (*funcp)(&t, offset, &mytm);
- dir = tmcomp(&mytm, &yourtm);
- if (dir != 0) {
- if (bits-- < 0)
- return WRONG;
- if (bits < 0)
- --t; /* may be needed if new t is minimal */
- else if (dir > 0)
- t -= ((time_t) 1) << bits;
- else t += ((time_t) 1) << bits;
- 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.
- */
- /*
- ** The (void *) casts are the benefit of SunOS 3.3 on Sun 2's.
- */
- sp = (const struct state *)
- (((void *) funcp == (void *) localsub) ?
- lclptr : gmtptr);
-#ifdef ALL_STATE
- if (sp == NULL)
- return WRONG;
-#endif /* defined ALL_STATE */
- 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 = t + sp->ttis[j].tt_gmtoff -
- sp->ttis[i].tt_gmtoff;
- (*funcp)(&newt, offset, &mytm);
- if (tmcomp(&mytm, &yourtm) != 0)
- continue;
- if (mytm.tm_isdst != yourtm.tm_isdst)
- continue;
- /*
- ** We have a match.
- */
- t = newt;
- goto label;
- }
- }
- return WRONG;
- }
-label:
- newt = t + saved_seconds;
- if ((newt < t) != (saved_seconds < 0))
- return WRONG;
- t = newt;
- (*funcp)(&t, offset, tmp);
- *okayp = TRUE;
- return t;
-}
-
-static time_t
-time2(tmp, funcp, offset, okayp)
-struct tm * const tmp;
-void (* const funcp) P((const time_t*, long, struct tm*));
-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(tmp, funcp, offset, okayp, FALSE);
- return *okayp ? t : time2sub(tmp, funcp, offset, okayp, TRUE);
-}
-
-static time_t
-time1(tmp, funcp, offset)
-struct tm * const tmp;
-void (* const funcp) P((const time_t *, long, struct tm *));
-const long offset;
-{
- register time_t t;
- register const struct state * sp;
- register int samei, otheri;
- register int sameind, otherind;
- register int i;
- register int nseen;
- int seen[TZ_MAX_TYPES];
- int types[TZ_MAX_TYPES];
- int okay;
-
- if (tmp->tm_isdst > 1)
- tmp->tm_isdst = 1;
- t = time2(tmp, funcp, offset, &okay);
-#ifdef PCTS
- /*
- ** PCTS code courtesy Grant Sullivan (grant@osf.org).
- */
- 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.
- */
- /*
- ** The (void *) casts are the benefit of SunOS 3.3 on Sun 2's.
- */
- sp = (const struct state *) (((void *) funcp == (void *) localsub) ?
- lclptr : gmtptr);
-#ifdef ALL_STATE
- if (sp == NULL)
- return WRONG;
-#endif /* defined ALL_STATE */
- 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 += sp->ttis[otheri].tt_gmtoff -
- sp->ttis[samei].tt_gmtoff;
- tmp->tm_isdst = !tmp->tm_isdst;
- t = time2(tmp, funcp, offset, &okay);
- if (okay)
- return t;
- tmp->tm_sec -= sp->ttis[otheri].tt_gmtoff -
- sp->ttis[samei].tt_gmtoff;
- tmp->tm_isdst = !tmp->tm_isdst;
- }
- }
- return WRONG;
-}
-
-time_t
-mktime(tmp)
-struct tm * const tmp;
-{
- tzset();
- return time1(tmp, localsub, 0L);
-}
-
-#ifdef STD_INSPIRED
-
-time_t
-timelocal(tmp)
-struct tm * const tmp;
-{
- tmp->tm_isdst = -1; /* in case it wasn't initialized */
- return mktime(tmp);
-}
-
-time_t
-timegm(tmp)
-struct tm * const tmp;
-{
- tmp->tm_isdst = 0;
- return time1(tmp, gmtsub, 0L);
-}
-
-time_t
-timeoff(tmp, offset)
-struct tm * const tmp;
-const long offset;
-{
- tmp->tm_isdst = 0;
- return time1(tmp, gmtsub, offset);
-}
-
-#endif /* defined STD_INSPIRED */
-
-#ifdef CMUCS
-
-/*
-** The following is supplied for compatibility with
-** previous versions of the CMUCS runtime library.
-*/
-
-long
-gtime(tmp)
-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(timep)
-time_t * timep;
-{
- register struct state * sp;
- register struct lsinfo * lp;
- register int i;
-
- sp = lclptr;
- i = sp->leapcnt;
- while (--i >= 0) {
- lp = &sp->lsis[i];
- if (*timep >= lp->ls_trans)
- return lp->ls_corr;
- }
- return 0;
-}
-
-time_t
-time2posix(t)
-time_t t;
-{
- tzset();
- return t - leapcorr(&t);
-}
-
-time_t
-posix2time(t)
-time_t t;
-{
- time_t x;
- time_t y;
-
- tzset();
- /*
- ** 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 = t + leapcorr(&t);
- y = x - leapcorr(&x);
- if (y < t) {
- do {
- x++;
- y = x - leapcorr(&x);
- } while (y < t);
- if (t != y)
- return x - 1;
- } else if (y > t) {
- do {
- --x;
- y = x - leapcorr(&x);
- } while (y > t);
- if (t != y)
- return x + 1;
- }
- return x;
-}
-
-#endif /* defined STD_INSPIRED */
+#include "pgtz.h" +#undef open +#define timezone pg_timezone +#define USG_COMPAT +extern time_t pg_timezone; +/* +** This file is in the public domain, so clarified as of +** 1996-06-05 by Arthur David Olson (arthur_david_olson@nih.gov). +*/ + +#ifndef lint +#ifndef NOID +static char elsieid[] = "@(#)localtime.c 7.78"; +#endif /* !defined NOID */ +#endif /* !defined lint */ + +/* +** Leap second handling from Bradley White (bww@k.gp.cs.cmu.edu). +** POSIX-style TZ environment variable handling from Guy Harris +** (guy@auspex.com). +*/ + +/*LINTLIBRARY*/ + +#include "private.h" +#include "tzfile.h" +#include "fcntl.h" + +/* +** 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 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; + time_t ats[TZ_MAX_TIMES]; + unsigned char types[TZ_MAX_TIMES]; + struct ttinfo ttis[TZ_MAX_TYPES]; + char chars[BIGGEST(BIGGEST(TZ_MAX_CHARS + 1, sizeof gmt), + (2 * (MY_TZNAME_MAX + 1)))]; + struct lsinfo lsis[TZ_MAX_LEAPS]; +}; + +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 */ + +/* +** Prototypes for static functions. +*/ + +static long detzcode P((const char * codep)); +static const char * getzname P((const char * strp)); +static const char * getnum P((const char * strp, int * nump, int min, + int max)); +static const char * getsecs P((const char * strp, long * secsp)); +static const char * getoffset P((const char * strp, long * offsetp)); +static const char * getrule P((const char * strp, struct rule * rulep)); +static void gmtload P((struct state * sp)); +static void gmtsub P((const time_t * timep, long offset, + struct tm * tmp)); +static void localsub P((const time_t * timep, long offset, + struct tm * tmp)); +static int increment_overflow P((int * number, int delta)); +static int normalize_overflow P((int * tensptr, int * unitsptr, + int base)); +static void settzname P((void)); +static time_t time1 P((struct tm * tmp, + void(*funcp) P((const time_t *, + long, struct tm *)), + long offset)); +static time_t time2 P((struct tm *tmp, + void(*funcp) P((const time_t *, + long, struct tm*)), + long offset, int * okayp)); +static time_t time2sub P((struct tm *tmp, + void(*funcp) P((const time_t *, + long, struct tm*)), + long offset, int * okayp, int do_norm_secs)); +static void timesub P((const time_t * timep, long offset, + const struct state * sp, struct tm * tmp)); +static int tmcomp P((const struct tm * atmp, + const struct tm * btmp)); +static time_t transtime P((time_t janfirst, int year, + const struct rule * rulep, long offset)); +static int tzload P((const char * name, struct state * sp)); +static int tzparse P((const char * name, struct state * sp, + int lastditch)); + +#ifdef ALL_STATE +static struct state * lclptr; +static struct state * gmtptr; +#endif /* defined ALL_STATE */ + +#ifndef ALL_STATE +static struct state lclmem; +static struct state gmtmem; +#define lclptr (&lclmem) +#define gmtptr (&gmtmem) +#endif /* State Farm */ + +#ifndef TZ_STRLEN_MAX +#define TZ_STRLEN_MAX 255 +#endif /* !defined TZ_STRLEN_MAX */ + +static char lcl_TZname[TZ_STRLEN_MAX + 1]; +static int lcl_is_set; +static int gmt_is_set; + +char * tzname[2] = { + wildabbr, + 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 (eggert@twinsun.com) for noting this. +*/ + +static struct tm tm; + +#ifdef USG_COMPAT +time_t timezone = 0; +int daylight = 0; +#endif /* defined USG_COMPAT */ + +#ifdef ALTZONE +time_t altzone = 0; +#endif /* defined ALTZONE */ + +static long +detzcode(codep) +const char * const codep; +{ + register long result; + register int i; + + result = (codep[0] & 0x80) ? ~0L : 0L; + for (i = 0; i < 4; ++i) + result = (result << 8) | (codep[i] & 0xff); + return result; +} + +static void +settzname P((void)) +{ + register struct state * const sp = lclptr; + register int i; + + tzname[0] = wildabbr; + tzname[1] = wildabbr; +#ifdef USG_COMPAT + daylight = 0; + timezone = 0; +#endif /* defined USG_COMPAT */ +#ifdef ALTZONE + altzone = 0; +#endif /* defined ALTZONE */ +#ifdef ALL_STATE + if (sp == NULL) { + tzname[0] = tzname[1] = gmt; + return; + } +#endif /* defined ALL_STATE */ + for (i = 0; i < sp->typecnt; ++i) { + register 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 (i == 0 || !ttisp->tt_isdst) + timezone = -(ttisp->tt_gmtoff); +#endif /* defined USG_COMPAT */ +#ifdef ALTZONE + if (i == 0 || 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) { + register const struct ttinfo * const ttisp = + &sp->ttis[ + sp->types[i]]; + + tzname[ttisp->tt_isdst] = + &sp->chars[ttisp->tt_abbrind]; + } +} + +static int +tzload(name, sp) +register const char * name; +register struct state * const sp; +{ + register const char * p; + register int i; + register int fid; + + if (name == NULL && (name = TZDEFAULT) == NULL) + return -1; + { + register 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) + return -1; + if ((strlen(p) + strlen(name) + 1) >= sizeof fullname) + return -1; + (void) strcpy(fullname, p); + (void) strcat(fullname, "/"); + (void) strcat(fullname, name); + /* + ** Set doaccess if '.' (as in "../") shows up in name. + */ + if (strchr(name, '.') != NULL) + doaccess = TRUE; + name = fullname; + } + if (doaccess && access(name, R_OK) != 0) + return -1; + if ((fid = open(name, OPEN_MODE)) == -1) + return -1; + } + { + struct tzhead * tzhp; + union { + struct tzhead tzhead; + char buf[sizeof *sp + sizeof *tzhp]; + } u; + int ttisstdcnt; + int ttisgmtcnt; + + i = read(fid, u.buf, sizeof u.buf); + if (close(fid) != 0) + return -1; + ttisstdcnt = (int) detzcode(u.tzhead.tzh_ttisstdcnt); + ttisgmtcnt = (int) detzcode(u.tzhead.tzh_ttisgmtcnt); + sp->leapcnt = (int) detzcode(u.tzhead.tzh_leapcnt); + sp->timecnt = (int) detzcode(u.tzhead.tzh_timecnt); + sp->typecnt = (int) detzcode(u.tzhead.tzh_typecnt); + sp->charcnt = (int) detzcode(u.tzhead.tzh_charcnt); + p = u.tzhead.tzh_charcnt + sizeof u.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)) + return -1; + if (i - (p - u.buf) < sp->timecnt * 4 + /* ats */ + sp->timecnt + /* types */ + sp->typecnt * (4 + 2) + /* ttinfos */ + sp->charcnt + /* chars */ + sp->leapcnt * (4 + 4) + /* lsinfos */ + ttisstdcnt + /* ttisstds */ + ttisgmtcnt) /* ttisgmts */ + return -1; + for (i = 0; i < sp->timecnt; ++i) { + sp->ats[i] = detzcode(p); + p += 4; + } + for (i = 0; i < sp->timecnt; ++i) { + sp->types[i] = (unsigned char) *p++; + if (sp->types[i] >= sp->typecnt) + return -1; + } + for (i = 0; i < sp->typecnt; ++i) { + register 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) + return -1; + ttisp->tt_abbrind = (unsigned char) *p++; + if (ttisp->tt_abbrind < 0 || + ttisp->tt_abbrind > sp->charcnt) + return -1; + } + 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) { + register struct lsinfo * lsisp; + + lsisp = &sp->lsis[i]; + lsisp->ls_trans = detzcode(p); + p += 4; + lsisp->ls_corr = detzcode(p); + p += 4; + } + for (i = 0; i < sp->typecnt; ++i) { + register 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) + return -1; + } + } + for (i = 0; i < sp->typecnt; ++i) { + register 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) + return -1; + } + } + } + return 0; +} + +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(strp) +register const char * strp; +{ + register char c; + + while ((c = *strp) != '\0' && !is_digit(c) && c != ',' && c != '-' && + c != '+') + ++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(strp, nump, min, max) +register const char * strp; +int * const nump; +const int min; +const int max; +{ + register char c; + register int num; + + if (strp == NULL || !is_digit(c = *strp)) + return NULL; + num = 0; + do { + num = num * 10 + (c - '0'); + if (num > max) + return NULL; /* illegal value */ + c = *++strp; + } while (is_digit(c)); + if (num < min) + 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(strp, secsp) +register 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(strp, offsetp) +register const char * strp; +long * const offsetp; +{ + register 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(strp, rulep) +const char * strp; +register 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(janfirst, year, rulep, offset) +const time_t janfirst; +const int year; +register const struct rule * const rulep; +const long offset; +{ + register int leapyear; + register time_t value; + register 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 = 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 = 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 += 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 += 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 value + rulep->r_time + offset; +} + +/* +** Given a POSIX section 8-style TZ string, fill in the rule tables as +** appropriate. +*/ + +static int +tzparse(name, sp, lastditch) +const char * name; +register struct state * const sp; +const int lastditch; +{ + const char * stdname; + const char * dstname; + size_t stdlen; + size_t dstlen; + long stdoffset; + long dstoffset; + register time_t * atp; + register unsigned char * typep; + register char * cp; + register 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 { + name = getzname(name); + stdlen = name - stdname; + if (stdlen < 3) + return -1; + if (*name == '\0') + return -1; + name = getoffset(name, &stdoffset); + if (name == NULL) + return -1; + } + load_result = tzload(TZDEFRULES, sp); + if (load_result != 0) + sp->leapcnt = 0; /* so, we're off a little */ + if (*name != '\0') { + dstname = name; + name = getzname(name); + dstlen = name - dstname; /* length of DST zone name */ + if (dstlen < 3) + return -1; + 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; + register int year; + register 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 to 2037. + */ + sp->timecnt = 2 * (2037 - EPOCH_YEAR + 1); + if (sp->timecnt > TZ_MAX_TIMES) + return -1; + sp->ttis[0].tt_gmtoff = -dstoffset; + sp->ttis[0].tt_isdst = 1; + sp->ttis[0].tt_abbrind = 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; + for (year = EPOCH_YEAR; year <= 2037; ++year) { + 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 */ + } + janfirst += year_lengths[isleap(year)] * + SECSPERDAY; + } + } else { + register long theirstdoffset; + register long theirdstoffset; + register long theiroffset; + register int isdst; + register int i; + register 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] += dstoffset - + theirdstoffset; + } else { + sp->ats[i] += stdoffset - + theirstdoffset; + } + } + theiroffset = -sp->ttis[j].tt_gmtoff; + if (sp->ttis[j].tt_isdst) + theirdstoffset = theiroffset; + else theirstdoffset = theiroffset; + } + /* + ** Finally, fill in ttis. + ** ttisstd and ttisgmt need not be handled. + */ + 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 = stdlen + 1; + sp->typecnt = 2; + } + } else { + dstlen = 0; + sp->typecnt = 1; /* only standard time */ + sp->timecnt = 0; + sp->ttis[0].tt_gmtoff = -stdoffset; + sp->ttis[0].tt_isdst = 0; + sp->ttis[0].tt_abbrind = 0; + } + sp->charcnt = stdlen + 1; + if (dstlen != 0) + sp->charcnt += 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(sp) +struct state * const sp; +{ + if (tzload(gmt, sp) != 0) + (void) tzparse(gmt, sp, 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 P((void)) +{ + if (lcl_is_set < 0) + return; + lcl_is_set = -1; + +#ifdef ALL_STATE + if (lclptr == NULL) { + lclptr = (struct state *) malloc(sizeof *lclptr); + if (lclptr == NULL) { + settzname(); /* all we can do */ + return; + } + } +#endif /* defined ALL_STATE */ + if (tzload((char *) NULL, lclptr) != 0) + gmtload(lclptr); + settzname(); +} + +void +tzset P((void)) +{ + register const char * name; + + name = getenv("TZ"); + if (name == NULL) { + tzsetwall(); + return; + } + + if (lcl_is_set > 0 && strcmp(lcl_TZname, name) == 0) + return; + lcl_is_set = strlen(name) < sizeof lcl_TZname; + if (lcl_is_set) + (void) strcpy(lcl_TZname, name); + +#ifdef ALL_STATE + if (lclptr == NULL) { + lclptr = (struct state *) malloc(sizeof *lclptr); + if (lclptr == NULL) { + settzname(); /* all we can do */ + return; + } + } +#endif /* defined ALL_STATE */ + 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) strcpy(lclptr->chars, gmt); + } else if (tzload(name, lclptr) != 0) + if (name[0] == ':' || tzparse(name, lclptr, FALSE) != 0) + (void) gmtload(lclptr); + settzname(); +} + +/* +** 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 void +localsub(timep, offset, tmp) +const time_t * const timep; +const long offset; +struct tm * const tmp; +{ + register struct state * sp; + register const struct ttinfo * ttisp; + register int i; + const time_t t = *timep; + + sp = lclptr; +#ifdef ALL_STATE + if (sp == NULL) { + gmtsub(timep, offset, tmp); + return; + } +#endif /* defined ALL_STATE */ + if (sp->timecnt == 0 || t < sp->ats[0]) { + i = 0; + while (sp->ttis[i].tt_isdst) + if (++i >= sp->typecnt) { + i = 0; + break; + } + } else { + for (i = 1; i < sp->timecnt; ++i) + if (t < sp->ats[i]) + break; + i = sp->types[i - 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); + */ + timesub(&t, ttisp->tt_gmtoff, sp, tmp); + tmp->tm_isdst = ttisp->tt_isdst; + tzname[tmp->tm_isdst] = &sp->chars[ttisp->tt_abbrind]; +#ifdef TM_ZONE + tmp->TM_ZONE = &sp->chars[ttisp->tt_abbrind]; +#endif /* defined TM_ZONE */ +} + +struct tm * +localtime(timep) +const time_t * const timep; +{ + tzset(); + localsub(timep, 0L, &tm); + return &tm; +} + +/* +** Re-entrant version of localtime. +*/ + +struct tm * +localtime_r(timep, tm) +const time_t * const timep; +struct tm * tm; +{ + localsub(timep, 0L, tm); + return tm; +} + +/* +** gmtsub is to gmtime as localsub is to localtime. +*/ + +static void +gmtsub(timep, offset, tmp) +const time_t * const timep; +const long offset; +struct tm * const tmp; +{ + if (!gmt_is_set) { + gmt_is_set = TRUE; +#ifdef ALL_STATE + gmtptr = (struct state *) malloc(sizeof *gmtptr); + if (gmtptr != NULL) +#endif /* defined ALL_STATE */ + gmtload(gmtptr); + } + timesub(timep, offset, gmtptr, 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 (offset != 0) + tmp->TM_ZONE = wildabbr; + else { +#ifdef ALL_STATE + if (gmtptr == NULL) + tmp->TM_ZONE = gmt; + else tmp->TM_ZONE = gmtptr->chars; +#endif /* defined ALL_STATE */ +#ifndef ALL_STATE + tmp->TM_ZONE = gmtptr->chars; +#endif /* State Farm */ + } +#endif /* defined TM_ZONE */ +} + +struct tm * +gmtime(timep) +const time_t * const timep; +{ + gmtsub(timep, 0L, &tm); + return &tm; +} + +/* +* Re-entrant version of gmtime. +*/ + +struct tm * +gmtime_r(timep, tm) +const time_t * const timep; +struct tm * tm; +{ + gmtsub(timep, 0L, tm); + return tm; +} + +#ifdef STD_INSPIRED + +struct tm * +offtime(timep, offset) +const time_t * const timep; +const long offset; +{ + gmtsub(timep, offset, &tm); + return &tm; +} + +#endif /* defined STD_INSPIRED */ + +static void +timesub(timep, offset, sp, tmp) +const time_t * const timep; +const long offset; +register const struct state * const sp; +register struct tm * const tmp; +{ + register const struct lsinfo * lp; + register long days; + register long rem; + register int y; + register int yleap; + register const int * ip; + register long corr; + register int hit; + register int i; + + corr = 0; + hit = 0; +#ifdef ALL_STATE + i = (sp == NULL) ? 0 : sp->leapcnt; +#endif /* defined ALL_STATE */ +#ifndef ALL_STATE + i = sp->leapcnt; +#endif /* State Farm */ + 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; + } + } + days = *timep / SECSPERDAY; + rem = *timep % SECSPERDAY; +#ifdef mc68k + if (*timep == 0x80000000) { + /* + ** A 3B1 muffs the division on the most negative number. + */ + days = -24855; + rem = -11648; + } +#endif /* defined mc68k */ + rem += (offset - corr); + while (rem < 0) { + rem += SECSPERDAY; + --days; + } + while (rem >= SECSPERDAY) { + rem -= SECSPERDAY; + ++days; + } + tmp->tm_hour = (int) (rem / SECSPERHOUR); + rem = 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; + tmp->tm_wday = (int) ((EPOCH_WDAY + days) % DAYSPERWEEK); + if (tmp->tm_wday < 0) + tmp->tm_wday += DAYSPERWEEK; + y = EPOCH_YEAR; +#define LEAPS_THRU_END_OF(y) ((y) / 4 - (y) / 100 + (y) / 400) + while (days < 0 || days >= (long) year_lengths[yleap = isleap(y)]) { + register int newy; + + newy = y + days / DAYSPERNYEAR; + if (days < 0) + --newy; + days -= (newy - y) * DAYSPERNYEAR + + LEAPS_THRU_END_OF(newy - 1) - + LEAPS_THRU_END_OF(y - 1); + y = newy; + } + tmp->tm_year = y - TM_YEAR_BASE; + tmp->tm_yday = (int) days; + ip = mon_lengths[yleap]; + for (tmp->tm_mon = 0; days >= (long) ip[tmp->tm_mon]; ++(tmp->tm_mon)) + days = days - (long) ip[tmp->tm_mon]; + tmp->tm_mday = (int) (days + 1); + tmp->tm_isdst = 0; +#ifdef TM_GMTOFF + tmp->TM_GMTOFF = offset; +#endif /* defined TM_GMTOFF */ +} + +char * +ctime(timep) +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)) +*/ + return asctime(localtime(timep)); +} + +char * +ctime_r(timep, buf) +const time_t * const timep; +char * buf; +{ + struct tm tm; + + return asctime_r(localtime_r(timep, &tm), 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. +** [kridle@xinet.com as of 1996-01-16.] +** 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 (-1) +#endif /* !defined WRONG */ + +/* +** Simplified normalize logic courtesy Paul Eggert (eggert@twinsun.com). +*/ + +static int +increment_overflow(number, delta) +int * number; +int delta; +{ + int number0; + + number0 = *number; + *number += delta; + return (*number < number0) != (delta < 0); +} + +static int +normalize_overflow(tensptr, unitsptr, base) +int * const tensptr; +int * const unitsptr; +const int base; +{ + register int tensdelta; + + tensdelta = (*unitsptr >= 0) ? + (*unitsptr / base) : + (-1 - (-1 - *unitsptr) / base); + *unitsptr -= tensdelta * base; + return increment_overflow(tensptr, tensdelta); +} + +static int +tmcomp(atmp, btmp) +register const struct tm * const atmp; +register const struct tm * const btmp; +{ + register 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(tmp, funcp, offset, okayp, do_norm_secs) +struct tm * const tmp; +void (* const funcp) P((const time_t*, long, struct tm*)); +const long offset; +int * const okayp; +const int do_norm_secs; +{ + register const struct state * sp; + register int dir; + register int bits; + register int i, j ; + register int saved_seconds; + time_t newt; + time_t t; + struct tm yourtm, mytm; + + *okayp = FALSE; + yourtm = *tmp; + if (do_norm_secs) { + if (normalize_overflow(&yourtm.tm_min, &yourtm.tm_sec, + SECSPERMIN)) + return WRONG; + } + if (normalize_overflow(&yourtm.tm_hour, &yourtm.tm_min, MINSPERHOUR)) + return WRONG; + if (normalize_overflow(&yourtm.tm_mday, &yourtm.tm_hour, HOURSPERDAY)) + return WRONG; + if (normalize_overflow(&yourtm.tm_year, &yourtm.tm_mon, MONSPERYEAR)) + return WRONG; + /* + ** Turn yourtm.tm_year into an actual year number for now. + ** It is converted back to an offset from TM_YEAR_BASE later. + */ + if (increment_overflow(&yourtm.tm_year, TM_YEAR_BASE)) + return WRONG; + while (yourtm.tm_mday <= 0) { + if (increment_overflow(&yourtm.tm_year, -1)) + return WRONG; + i = yourtm.tm_year + (1 < yourtm.tm_mon); + yourtm.tm_mday += year_lengths[isleap(i)]; + } + while (yourtm.tm_mday > DAYSPERLYEAR) { + i = yourtm.tm_year + (1 < yourtm.tm_mon); + yourtm.tm_mday -= year_lengths[isleap(i)]; + if (increment_overflow(&yourtm.tm_year, 1)) + return WRONG; + } + for ( ; ; ) { + i = mon_lengths[isleap(yourtm.tm_year)][yourtm.tm_mon]; + if (yourtm.tm_mday <= i) + break; + yourtm.tm_mday -= i; + if (++yourtm.tm_mon >= MONSPERYEAR) { + yourtm.tm_mon = 0; + if (increment_overflow(&yourtm.tm_year, 1)) + return WRONG; + } + } + if (increment_overflow(&yourtm.tm_year, -TM_YEAR_BASE)) + return WRONG; + if (yourtm.tm_sec >= 0 && yourtm.tm_sec < SECSPERMIN) + saved_seconds = 0; + else if (yourtm.tm_year + 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)) + return WRONG; + saved_seconds = yourtm.tm_sec; + yourtm.tm_sec = SECSPERMIN - 1; + } else { + saved_seconds = yourtm.tm_sec; + yourtm.tm_sec = 0; + } + /* + ** Divide the search space in half + ** (this works whether time_t is signed or unsigned). + */ + bits = TYPE_BIT(time_t) - 1; + /* + ** If time_t is signed, then 0 is just above the median, + ** assuming two's complement arithmetic. + ** If time_t is unsigned, then (1 << bits) is just above the median. + */ + t = TYPE_SIGNED(time_t) ? 0 : (((time_t) 1) << bits); + for ( ; ; ) { + (*funcp)(&t, offset, &mytm); + dir = tmcomp(&mytm, &yourtm); + if (dir != 0) { + if (bits-- < 0) + return WRONG; + if (bits < 0) + --t; /* may be needed if new t is minimal */ + else if (dir > 0) + t -= ((time_t) 1) << bits; + else t += ((time_t) 1) << bits; + 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. + */ + /* + ** The (void *) casts are the benefit of SunOS 3.3 on Sun 2's. + */ + sp = (const struct state *) + (((void *) funcp == (void *) localsub) ? + lclptr : gmtptr); +#ifdef ALL_STATE + if (sp == NULL) + return WRONG; +#endif /* defined ALL_STATE */ + 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 = t + sp->ttis[j].tt_gmtoff - + sp->ttis[i].tt_gmtoff; + (*funcp)(&newt, offset, &mytm); + if (tmcomp(&mytm, &yourtm) != 0) + continue; + if (mytm.tm_isdst != yourtm.tm_isdst) + continue; + /* + ** We have a match. + */ + t = newt; + goto label; + } + } + return WRONG; + } +label: + newt = t + saved_seconds; + if ((newt < t) != (saved_seconds < 0)) + return WRONG; + t = newt; + (*funcp)(&t, offset, tmp); + *okayp = TRUE; + return t; +} + +static time_t +time2(tmp, funcp, offset, okayp) +struct tm * const tmp; +void (* const funcp) P((const time_t*, long, struct tm*)); +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(tmp, funcp, offset, okayp, FALSE); + return *okayp ? t : time2sub(tmp, funcp, offset, okayp, TRUE); +} + +static time_t +time1(tmp, funcp, offset) +struct tm * const tmp; +void (* const funcp) P((const time_t *, long, struct tm *)); +const long offset; +{ + register time_t t; + register const struct state * sp; + register int samei, otheri; + register int sameind, otherind; + register int i; + register int nseen; + int seen[TZ_MAX_TYPES]; + int types[TZ_MAX_TYPES]; + int okay; + + if (tmp->tm_isdst > 1) + tmp->tm_isdst = 1; + t = time2(tmp, funcp, offset, &okay); +#ifdef PCTS + /* + ** PCTS code courtesy Grant Sullivan (grant@osf.org). + */ + 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. + */ + /* + ** The (void *) casts are the benefit of SunOS 3.3 on Sun 2's. + */ + sp = (const struct state *) (((void *) funcp == (void *) localsub) ? + lclptr : gmtptr); +#ifdef ALL_STATE + if (sp == NULL) + return WRONG; +#endif /* defined ALL_STATE */ + 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 += sp->ttis[otheri].tt_gmtoff - + sp->ttis[samei].tt_gmtoff; + tmp->tm_isdst = !tmp->tm_isdst; + t = time2(tmp, funcp, offset, &okay); + if (okay) + return t; + tmp->tm_sec -= sp->ttis[otheri].tt_gmtoff - + sp->ttis[samei].tt_gmtoff; + tmp->tm_isdst = !tmp->tm_isdst; + } + } + return WRONG; +} + +time_t +mktime(tmp) +struct tm * const tmp; +{ + tzset(); + return time1(tmp, localsub, 0L); +} + +#ifdef STD_INSPIRED + +time_t +timelocal(tmp) +struct tm * const tmp; +{ + tmp->tm_isdst = -1; /* in case it wasn't initialized */ + return mktime(tmp); +} + +time_t +timegm(tmp) +struct tm * const tmp; +{ + tmp->tm_isdst = 0; + return time1(tmp, gmtsub, 0L); +} + +time_t +timeoff(tmp, offset) +struct tm * const tmp; +const long offset; +{ + tmp->tm_isdst = 0; + return time1(tmp, gmtsub, offset); +} + +#endif /* defined STD_INSPIRED */ + +#ifdef CMUCS + +/* +** The following is supplied for compatibility with +** previous versions of the CMUCS runtime library. +*/ + +long +gtime(tmp) +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(timep) +time_t * timep; +{ + register struct state * sp; + register struct lsinfo * lp; + register int i; + + sp = lclptr; + i = sp->leapcnt; + while (--i >= 0) { + lp = &sp->lsis[i]; + if (*timep >= lp->ls_trans) + return lp->ls_corr; + } + return 0; +} + +time_t +time2posix(t) +time_t t; +{ + tzset(); + return t - leapcorr(&t); +} + +time_t +posix2time(t) +time_t t; +{ + time_t x; + time_t y; + + tzset(); + /* + ** 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 = t + leapcorr(&t); + y = x - leapcorr(&x); + if (y < t) { + do { + x++; + y = x - leapcorr(&x); + } while (y < t); + if (t != y) + return x - 1; + } else if (y > t) { + do { + --x; + y = x - leapcorr(&x); + } while (y > t); + if (t != y) + return x + 1; + } + return x; +} + +#endif /* defined STD_INSPIRED */ diff --git a/src/timezone/pgtz.h b/src/timezone/pgtz.h index 17df71cbec9..d30ac7aac3a 100644 --- a/src/timezone/pgtz.h +++ b/src/timezone/pgtz.h @@ -1,8 +1,6 @@ #include "postgres.h" #define NOID -#define HAVE_SYMLINK 0 -#define HAVE_SYS_WAIT_H 0 #define TZDIR pgwin32_TZDIR() char *pgwin32_TZDIR(void); diff --git a/src/timezone/private.h b/src/timezone/private.h index 9333529bcc4..c8f45486837 100644 --- a/src/timezone/private.h +++ b/src/timezone/private.h @@ -1,294 +1,294 @@ -#ifndef PRIVATE_H
-
-#define PRIVATE_H
-
-/*
-** This file is in the public domain, so clarified as of
-** 1996-06-05 by Arthur David Olson (arthur_david_olson@nih.gov).
-*/
-
-/*
-** 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 7.53";
-#endif /* !defined NOID */
-#endif /* !defined lint */
-
-/*
-** Defaults for preprocessor symbols.
-** You can override these in your C compiler options, e.g. `-DHAVE_ADJTIME=0'.
-*/
-
-#ifndef HAVE_ADJTIME
-#define HAVE_ADJTIME 1
-#endif /* !defined HAVE_ADJTIME */
-
-#ifndef HAVE_GETTEXT
-#define HAVE_GETTEXT 0
-#endif /* !defined HAVE_GETTEXT */
-
-#ifndef HAVE_INCOMPATIBLE_CTIME_R
-#define HAVE_INCOMPATIBLE_CTIME_R 0
-#endif /* !defined INCOMPATIBLE_CTIME_R */
-
-#ifndef HAVE_SETTIMEOFDAY
-#define HAVE_SETTIMEOFDAY 3
-#endif /* !defined HAVE_SETTIMEOFDAY */
-
-#ifndef HAVE_STRERROR
-#define HAVE_STRERROR 1
-#endif /* !defined HAVE_STRERROR */
-
-#ifndef HAVE_SYMLINK
-#define HAVE_SYMLINK 1
-#endif /* !defined HAVE_SYMLINK */
-
-#ifndef HAVE_SYS_STAT_H
-#define HAVE_SYS_STAT_H 1
-#endif /* !defined HAVE_SYS_STAT_H */
-
-#ifndef HAVE_SYS_WAIT_H
-#define HAVE_SYS_WAIT_H 1
-#endif /* !defined HAVE_SYS_WAIT_H */
-
-#ifndef HAVE_UNISTD_H
-#define HAVE_UNISTD_H 1
-#endif /* !defined HAVE_UNISTD_H */
-
-#ifndef HAVE_UTMPX_H
-#define HAVE_UTMPX_H 0
-#endif /* !defined HAVE_UTMPX_H */
-
-#ifndef LOCALE_HOME
-#define LOCALE_HOME "/usr/lib/locale"
-#endif /* !defined LOCALE_HOME */
-
-#if HAVE_INCOMPATIBLE_CTIME_R
-#define asctime_r _incompatible_asctime_r
-#define ctime_r _incompatible_ctime_r
-#endif /* HAVE_INCOMPATIBLE_CTIME_R */
-
-/*
-** Nested includes
-*/
-
-#include "sys/types.h" /* for time_t */
-#include "stdio.h"
-#include "errno.h"
-#include "string.h"
-#include "limits.h" /* for CHAR_BIT */
-#include "time.h"
-#include "stdlib.h"
-
-#if HAVE_GETTEXT - 0
-#include "libintl.h"
-#endif /* HAVE_GETTEXT - 0 */
-
-#if HAVE_SYS_WAIT_H - 0
-#include <sys/wait.h> /* for WIFEXITED and WEXITSTATUS */
-#endif /* HAVE_SYS_WAIT_H - 0 */
-
-#ifndef WIFEXITED
-#define WIFEXITED(status) (((status) & 0xff) == 0)
-#endif /* !defined WIFEXITED */
-#ifndef WEXITSTATUS
-#define WEXITSTATUS(status) (((status) >> 8) & 0xff)
-#endif /* !defined WEXITSTATUS */
-
-#if HAVE_UNISTD_H - 0
-#include "unistd.h" /* for F_OK and R_OK */
-#endif /* HAVE_UNISTD_H - 0 */
-
-#if !(HAVE_UNISTD_H - 0)
-#ifndef F_OK
-#define F_OK 0
-#endif /* !defined F_OK */
-#ifndef R_OK
-#define R_OK 4
-#endif /* !defined R_OK */
-#endif /* !(HAVE_UNISTD_H - 0) */
-
-/* Unlike <ctype.h>'s isdigit, this also works if c < 0 | c > UCHAR_MAX. */
-#define is_digit(c) ((unsigned)(c) - '0' <= 9)
-
-/*
-** Workarounds for compilers/systems.
-*/
-
-/*
-** SunOS 4.1.1 cc lacks prototypes.
-*/
-
-#ifndef P
-#ifdef __STDC__
-#define P(x) x
-#endif /* defined __STDC__ */
-#ifndef __STDC__
-#define P(x) ()
-#endif /* !defined __STDC__ */
-#endif /* !defined P */
-
-/*
-** SunOS 4.1.1 headers lack EXIT_SUCCESS.
-*/
-
-#ifndef EXIT_SUCCESS
-#define EXIT_SUCCESS 0
-#endif /* !defined EXIT_SUCCESS */
-
-/*
-** SunOS 4.1.1 headers lack EXIT_FAILURE.
-*/
-
-#ifndef EXIT_FAILURE
-#define EXIT_FAILURE 1
-#endif /* !defined EXIT_FAILURE */
-
-/*
-** SunOS 4.1.1 headers lack FILENAME_MAX.
-*/
-
-#ifndef FILENAME_MAX
-
-#ifndef MAXPATHLEN
-#ifdef unix
-#include "sys/param.h"
-#endif /* defined unix */
-#endif /* !defined MAXPATHLEN */
-
-#ifdef MAXPATHLEN
-#define FILENAME_MAX MAXPATHLEN
-#endif /* defined MAXPATHLEN */
-#ifndef MAXPATHLEN
-#define FILENAME_MAX 1024 /* Pure guesswork */
-#endif /* !defined MAXPATHLEN */
-
-#endif /* !defined FILENAME_MAX */
-
-/*
-** SunOS 4.1.1 libraries lack remove.
-*/
-
-#ifndef remove
-extern int unlink P((const char * filename));
-#define remove unlink
-#endif /* !defined remove */
-
-/*
-** Some ancient errno.h implementations don't declare errno.
-** But some newer errno.h implementations define it as a macro.
-** Fix the former without affecting the latter.
-*/
-#ifndef errno
-extern int errno;
-#endif /* !defined errno */
-
-/*
-** Private function declarations.
-*/
-char * icalloc P((int nelem, int elsize));
-char * icatalloc P((char * old, const char * new));
-char * icpyalloc P((const char * string));
-char * imalloc P((int n));
-void * irealloc P((void * pointer, int size));
-void icfree P((char * pointer));
-void ifree P((char * pointer));
-char * scheck P((const char *string, const char *format));
-
-
-/*
-** Finally, some convenience items.
-*/
-
-#ifndef TRUE
-#define TRUE 1
-#endif /* !defined TRUE */
-
-#ifndef FALSE
-#define FALSE 0
-#endif /* !defined FALSE */
-
-#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 */
-
-/*
-** For the benefit of GNU folk...
-** `_(MSGID)' uses the current locale's message library string for MSGID.
-** The default is to use gettext if available, and use MSGID otherwise.
-*/
-
-#ifndef _
-#if HAVE_GETTEXT - 0
-#define _(msgid) gettext(msgid)
-#else /* !(HAVE_GETTEXT - 0) */
-#define _(msgid) msgid
-#endif /* !(HAVE_GETTEXT - 0) */
-#endif /* !defined _ */
-
-#ifndef TZ_DOMAIN
-#define TZ_DOMAIN "tz"
-#endif /* !defined TZ_DOMAIN */
-
-#if HAVE_INCOMPATIBLE_CTIME_R
-#undef asctime_r
-#undef ctime_r
-char *asctime_r P((struct tm const *, char *));
-char *ctime_r P((time_t const *, char *));
-#endif /* HAVE_INCOMPATIBLE_CTIME_R */
-
-/*
-** UNIX was a registered trademark of The Open Group in 2003.
-*/
-
-#endif /* !defined PRIVATE_H */
+#ifndef PRIVATE_H + +#define PRIVATE_H + +/* +** This file is in the public domain, so clarified as of +** 1996-06-05 by Arthur David Olson (arthur_david_olson@nih.gov). +*/ + +/* +** 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 7.53"; +#endif /* !defined NOID */ +#endif /* !defined lint */ + +/* +** Defaults for preprocessor symbols. +** You can override these in your C compiler options, e.g. `-DHAVE_ADJTIME=0'. +*/ + +#ifndef HAVE_ADJTIME +#define HAVE_ADJTIME 1 +#endif /* !defined HAVE_ADJTIME */ + +#ifndef HAVE_GETTEXT +#define HAVE_GETTEXT 0 +#endif /* !defined HAVE_GETTEXT */ + +#ifndef HAVE_INCOMPATIBLE_CTIME_R +#define HAVE_INCOMPATIBLE_CTIME_R 0 +#endif /* !defined INCOMPATIBLE_CTIME_R */ + +#ifndef HAVE_SETTIMEOFDAY +#define HAVE_SETTIMEOFDAY 3 +#endif /* !defined HAVE_SETTIMEOFDAY */ + +#ifndef HAVE_STRERROR +#define HAVE_STRERROR 1 +#endif /* !defined HAVE_STRERROR */ + +#ifndef HAVE_SYMLINK +#define HAVE_SYMLINK 1 +#endif /* !defined HAVE_SYMLINK */ + +#ifndef HAVE_SYS_STAT_H +#define HAVE_SYS_STAT_H 1 +#endif /* !defined HAVE_SYS_STAT_H */ + +#ifndef HAVE_SYS_WAIT_H +#define HAVE_SYS_WAIT_H 1 +#endif /* !defined HAVE_SYS_WAIT_H */ + +#ifndef HAVE_UNISTD_H +#define HAVE_UNISTD_H 1 +#endif /* !defined HAVE_UNISTD_H */ + +#ifndef HAVE_UTMPX_H +#define HAVE_UTMPX_H 0 +#endif /* !defined HAVE_UTMPX_H */ + +#ifndef LOCALE_HOME +#define LOCALE_HOME "/usr/lib/locale" +#endif /* !defined LOCALE_HOME */ + +#if HAVE_INCOMPATIBLE_CTIME_R +#define asctime_r _incompatible_asctime_r +#define ctime_r _incompatible_ctime_r +#endif /* HAVE_INCOMPATIBLE_CTIME_R */ + +/* +** Nested includes +*/ + +#include "sys/types.h" /* for time_t */ +#include "stdio.h" +#include "errno.h" +#include "string.h" +#include "limits.h" /* for CHAR_BIT */ +#include "time.h" +#include "stdlib.h" + +#if HAVE_GETTEXT - 0 +#include "libintl.h" +#endif /* HAVE_GETTEXT - 0 */ + +#if HAVE_SYS_WAIT_H - 0 +#include <sys/wait.h> /* for WIFEXITED and WEXITSTATUS */ +#endif /* HAVE_SYS_WAIT_H - 0 */ + +#ifndef WIFEXITED +#define WIFEXITED(status) (((status) & 0xff) == 0) +#endif /* !defined WIFEXITED */ +#ifndef WEXITSTATUS +#define WEXITSTATUS(status) (((status) >> 8) & 0xff) +#endif /* !defined WEXITSTATUS */ + +#if HAVE_UNISTD_H - 0 +#include "unistd.h" /* for F_OK and R_OK */ +#endif /* HAVE_UNISTD_H - 0 */ + +#if !(HAVE_UNISTD_H - 0) +#ifndef F_OK +#define F_OK 0 +#endif /* !defined F_OK */ +#ifndef R_OK +#define R_OK 4 +#endif /* !defined R_OK */ +#endif /* !(HAVE_UNISTD_H - 0) */ + +/* Unlike <ctype.h>'s isdigit, this also works if c < 0 | c > UCHAR_MAX. */ +#define is_digit(c) ((unsigned)(c) - '0' <= 9) + +/* +** Workarounds for compilers/systems. +*/ + +/* +** SunOS 4.1.1 cc lacks prototypes. +*/ + +#ifndef P +#ifdef __STDC__ +#define P(x) x +#endif /* defined __STDC__ */ +#ifndef __STDC__ +#define P(x) () +#endif /* !defined __STDC__ */ +#endif /* !defined P */ + +/* +** SunOS 4.1.1 headers lack EXIT_SUCCESS. +*/ + +#ifndef EXIT_SUCCESS +#define EXIT_SUCCESS 0 +#endif /* !defined EXIT_SUCCESS */ + +/* +** SunOS 4.1.1 headers lack EXIT_FAILURE. +*/ + +#ifndef EXIT_FAILURE +#define EXIT_FAILURE 1 +#endif /* !defined EXIT_FAILURE */ + +/* +** SunOS 4.1.1 headers lack FILENAME_MAX. +*/ + +#ifndef FILENAME_MAX + +#ifndef MAXPATHLEN +#ifdef unix +#include "sys/param.h" +#endif /* defined unix */ +#endif /* !defined MAXPATHLEN */ + +#ifdef MAXPATHLEN +#define FILENAME_MAX MAXPATHLEN +#endif /* defined MAXPATHLEN */ +#ifndef MAXPATHLEN +#define FILENAME_MAX 1024 /* Pure guesswork */ +#endif /* !defined MAXPATHLEN */ + +#endif /* !defined FILENAME_MAX */ + +/* +** SunOS 4.1.1 libraries lack remove. +*/ + +#ifndef remove +extern int unlink P((const char * filename)); +#define remove unlink +#endif /* !defined remove */ + +/* +** Some ancient errno.h implementations don't declare errno. +** But some newer errno.h implementations define it as a macro. +** Fix the former without affecting the latter. +*/ +#ifndef errno +extern int errno; +#endif /* !defined errno */ + +/* +** Private function declarations. +*/ +char * icalloc P((int nelem, int elsize)); +char * icatalloc P((char * old, const char * new)); +char * icpyalloc P((const char * string)); +char * imalloc P((int n)); +void * irealloc P((void * pointer, int size)); +void icfree P((char * pointer)); +void ifree P((char * pointer)); +char * scheck P((const char *string, const char *format)); + + +/* +** Finally, some convenience items. +*/ + +#ifndef TRUE +#define TRUE 1 +#endif /* !defined TRUE */ + +#ifndef FALSE +#define FALSE 0 +#endif /* !defined FALSE */ + +#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 */ + +/* +** For the benefit of GNU folk... +** `_(MSGID)' uses the current locale's message library string for MSGID. +** The default is to use gettext if available, and use MSGID otherwise. +*/ + +#ifndef _ +#if HAVE_GETTEXT - 0 +#define _(msgid) gettext(msgid) +#else /* !(HAVE_GETTEXT - 0) */ +#define _(msgid) msgid +#endif /* !(HAVE_GETTEXT - 0) */ +#endif /* !defined _ */ + +#ifndef TZ_DOMAIN +#define TZ_DOMAIN "tz" +#endif /* !defined TZ_DOMAIN */ + +#if HAVE_INCOMPATIBLE_CTIME_R +#undef asctime_r +#undef ctime_r +char *asctime_r P((struct tm const *, char *)); +char *ctime_r P((time_t const *, char *)); +#endif /* HAVE_INCOMPATIBLE_CTIME_R */ + +/* +** UNIX was a registered trademark of The Open Group in 2003. +*/ + +#endif /* !defined PRIVATE_H */ diff --git a/src/timezone/scheck.c b/src/timezone/scheck.c index 6bcfe87950a..39feeba7011 100644 --- a/src/timezone/scheck.c +++ b/src/timezone/scheck.c @@ -1,59 +1,59 @@ -#ifndef lint
-#ifndef NOID
-static char elsieid[] = "@(#)scheck.c 8.15";
-#endif /* !defined lint */
-#endif /* !defined NOID */
-
-/*LINTLIBRARY*/
-
-#include "private.h"
-
-char *
-scheck(string, format)
-const char * const string;
-const char * const format;
-{
- register char * fbuf;
- register const char * fp;
- register char * tp;
- register int c;
- register char * result;
- char dummy;
- static char nada;
-
- result = &nada;
- if (string == NULL || format == NULL)
- return result;
- fbuf = imalloc((int) (2 * strlen(format) + 4));
- if (fbuf == NULL)
- return result;
- fp = format;
- tp = fbuf;
- while ((*tp++ = c = *fp++) != '\0') {
- if (c != '%')
- continue;
- if (*fp == '%') {
- *tp++ = *fp++;
- continue;
- }
- *tp++ = '*';
- if (*fp == '*')
- ++fp;
- while (is_digit(*fp))
- *tp++ = *fp++;
- if (*fp == 'l' || *fp == 'h')
- *tp++ = *fp++;
- else if (*fp == '[')
- do *tp++ = *fp++;
- while (*fp != '\0' && *fp != ']');
- if ((*tp++ = *fp++) == '\0')
- break;
- }
- *(tp - 1) = '%';
- *tp++ = 'c';
- *tp = '\0';
- if (sscanf(string, fbuf, &dummy) != 1)
- result = (char *) format;
- ifree(fbuf);
- return result;
-}
+#ifndef lint +#ifndef NOID +static char elsieid[] = "@(#)scheck.c 8.15"; +#endif /* !defined lint */ +#endif /* !defined NOID */ + +/*LINTLIBRARY*/ + +#include "private.h" + +char * +scheck(string, format) +const char * const string; +const char * const format; +{ + register char * fbuf; + register const char * fp; + register char * tp; + register int c; + register char * result; + char dummy; + static char nada; + + result = &nada; + if (string == NULL || format == NULL) + return result; + fbuf = imalloc((int) (2 * strlen(format) + 4)); + if (fbuf == NULL) + return result; + fp = format; + tp = fbuf; + while ((*tp++ = c = *fp++) != '\0') { + if (c != '%') + continue; + if (*fp == '%') { + *tp++ = *fp++; + continue; + } + *tp++ = '*'; + if (*fp == '*') + ++fp; + while (is_digit(*fp)) + *tp++ = *fp++; + if (*fp == 'l' || *fp == 'h') + *tp++ = *fp++; + else if (*fp == '[') + do *tp++ = *fp++; + while (*fp != '\0' && *fp != ']'); + if ((*tp++ = *fp++) == '\0') + break; + } + *(tp - 1) = '%'; + *tp++ = 'c'; + *tp = '\0'; + if (sscanf(string, fbuf, &dummy) != 1) + result = (char *) format; + ifree(fbuf); + return result; +} diff --git a/src/timezone/tzfile.h b/src/timezone/tzfile.h index 2d07a867e2f..0921c3c3396 100644 --- a/src/timezone/tzfile.h +++ b/src/timezone/tzfile.h @@ -1,188 +1,188 @@ -#ifndef TZFILE_H
-
-#define TZFILE_H
-
-/*
-** This file is in the public domain, so clarified as of
-** 1996-06-05 by Arthur David Olson (arthur_david_olson@nih.gov).
-*/
-
-/*
-** 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/local/etc/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_reserved[16]; /* 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
-*/
-
-/*
-** 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 370
-#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 <earl@hpato.aus.hp.com>.
-*/
-#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))
-
-#ifndef USG
-
-/*
-** Use of the underscored variants may cause problems if you move your code to
-** certain System-V-based systems; for maximum portability, use the
-** underscore-free variants. The underscored variants are provided for
-** backward compatibility only; they may disappear from future versions of
-** this file.
-*/
-
-#define SECS_PER_MIN SECSPERMIN
-#define MINS_PER_HOUR MINSPERHOUR
-#define HOURS_PER_DAY HOURSPERDAY
-#define DAYS_PER_WEEK DAYSPERWEEK
-#define DAYS_PER_NYEAR DAYSPERNYEAR
-#define DAYS_PER_LYEAR DAYSPERLYEAR
-#define SECS_PER_HOUR SECSPERHOUR
-#define SECS_PER_DAY SECSPERDAY
-#define MONS_PER_YEAR MONSPERYEAR
-
-#endif /* !defined USG */
-
-#endif /* !defined TZFILE_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 (arthur_david_olson@nih.gov). +*/ + +/* +** 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/local/etc/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_reserved[16]; /* 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 +*/ + +/* +** 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 370 +#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 <earl@hpato.aus.hp.com>. +*/ +#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)) + +#ifndef USG + +/* +** Use of the underscored variants may cause problems if you move your code to +** certain System-V-based systems; for maximum portability, use the +** underscore-free variants. The underscored variants are provided for +** backward compatibility only; they may disappear from future versions of +** this file. +*/ + +#define SECS_PER_MIN SECSPERMIN +#define MINS_PER_HOUR MINSPERHOUR +#define HOURS_PER_DAY HOURSPERDAY +#define DAYS_PER_WEEK DAYSPERWEEK +#define DAYS_PER_NYEAR DAYSPERNYEAR +#define DAYS_PER_LYEAR DAYSPERLYEAR +#define SECS_PER_HOUR SECSPERHOUR +#define SECS_PER_DAY SECSPERDAY +#define MONS_PER_YEAR MONSPERYEAR + +#endif /* !defined USG */ + +#endif /* !defined TZFILE_H */ diff --git a/src/timezone/zic.c b/src/timezone/zic.c index ec187addf3d..21d665c7150 100644 --- a/src/timezone/zic.c +++ b/src/timezone/zic.c @@ -1,2258 +1,2258 @@ -static char elsieid[] = "@(#)zic.c 7.115";
-#include "pgtz.h"
-#undef unlink
-#undef TZDIR
-#define TZDIR "data"
-#ifdef WIN32
-#include <windows.h>
-#endif
-
-#include "private.h"
-#include "locale.h"
-#include "tzfile.h"
-
-#if HAVE_SYS_STAT_H
-#include "sys/stat.h"
-#endif
-#ifndef WIN32
-#ifdef S_IRUSR
-#define MKDIR_UMASK (S_IRUSR|S_IWUSR|S_IXUSR|S_IRGRP|S_IXGRP|S_IROTH|S_IXOTH)
-#else
-#define MKDIR_UMASK 0755
-#endif
-#endif
-
-/*
-** On some ancient hosts, predicates like `isspace(C)' are defined
-** only if isascii(C) || C == EOF. Modern hosts obey the C Standard,
-** which says they are defined only if C == ((unsigned char) C) || C == EOF.
-** Neither the C Standard nor Posix require that `isascii' exist.
-** For portability, we check both ancient and modern requirements.
-** If isascii is not defined, the isascii check succeeds trivially.
-*/
-#include "ctype.h"
-#ifndef isascii
-#define isascii(x) 1
-#endif
-
-struct rule {
- const char * r_filename;
- int r_linenum;
- const char * r_name;
-
- int r_loyear; /* for example, 1986 */
- int r_hiyear; /* for example, 1986 */
- const char * r_yrtype;
-
- int r_month; /* 0..11 */
-
- int r_dycode; /* see below */
- int r_dayofmonth;
- int r_wday;
-
- long r_tod; /* time from midnight */
- int r_todisstd; /* above is standard time if TRUE */
- /* or wall clock time if FALSE */
- int r_todisgmt; /* above is GMT if TRUE */
- /* or local time if FALSE */
- long r_stdoff; /* offset from standard time */
- const char * r_abbrvar; /* variable part of abbreviation */
-
- int r_todo; /* a rule to do (used in outzone) */
- time_t r_temp; /* used in outzone */
-};
-
-/*
-** r_dycode r_dayofmonth r_wday
-*/
-
-#define DC_DOM 0 /* 1..31 */ /* unused */
-#define DC_DOWGEQ 1 /* 1..31 */ /* 0..6 (Sun..Sat) */
-#define DC_DOWLEQ 2 /* 1..31 */ /* 0..6 (Sun..Sat) */
-
-struct zone {
- const char * z_filename;
- int z_linenum;
-
- const char * z_name;
- long z_gmtoff;
- const char * z_rule;
- const char * z_format;
-
- long z_stdoff;
-
- struct rule * z_rules;
- int z_nrules;
-
- struct rule z_untilrule;
- time_t z_untiltime;
-};
-
-extern int getopt P((int argc, char * const argv[],
- const char * options));
-extern int link P((const char * fromname, const char * toname));
-extern char * optarg;
-extern int optind;
-
-static void addtt P((time_t starttime, int type));
-static int addtype P((long gmtoff, const char * abbr, int isdst,
- int ttisstd, int ttisgmt));
-static void leapadd P((time_t t, int positive, int rolling, int count));
-static void adjleap P((void));
-static void associate P((void));
-static int ciequal P((const char * ap, const char * bp));
-static void convert P((long val, char * buf));
-static void dolink P((const char * fromfile, const char * tofile));
-static void doabbr P((char * abbr, const char * format,
- const char * letters, int isdst));
-static void eat P((const char * name, int num));
-static void eats P((const char * name, int num,
- const char * rname, int rnum));
-static long eitol P((int i));
-static void error P((const char * message));
-static char ** getfields P((char * buf));
-static long gethms P((const char * string, const char * errstrng,
- int signable));
-static void infile P((const char * filename));
-static void inleap P((char ** fields, int nfields));
-static void inlink P((char ** fields, int nfields));
-static void inrule P((char ** fields, int nfields));
-static int inzcont P((char ** fields, int nfields));
-static int inzone P((char ** fields, int nfields));
-static int inzsub P((char ** fields, int nfields, int iscont));
-static int itsabbr P((const char * abbr, const char * word));
-static int itsdir P((const char * name));
-static int lowerit P((int c));
-static char * memcheck P((char * tocheck));
-static int mkdirs P((char * filename));
-static void newabbr P((const char * abbr));
-static long oadd P((long t1, long t2));
-static void outzone P((const struct zone * zp, int ntzones));
-static void puttzcode P((long code, FILE * fp));
-static int rcomp P((const void * leftp, const void * rightp));
-static time_t rpytime P((const struct rule * rp, int wantedy));
-static void rulesub P((struct rule * rp,
- const char * loyearp, const char * hiyearp,
- const char * typep, const char * monthp,
- const char * dayp, const char * timep));
-static void setboundaries P((void));
-static time_t tadd P((time_t t1, long t2));
-static void usage P((void));
-static void writezone P((const char * name));
-static int yearistype P((int year, const char * type));
-
-#if !(HAVE_STRERROR - 0)
-static char * strerror P((int));
-#endif /* !(HAVE_STRERROR - 0) */
-
-static int charcnt;
-static int errors;
-static const char * filename;
-static int leapcnt;
-static int linenum;
-static time_t max_time;
-static int max_year;
-static int max_year_representable;
-static time_t min_time;
-static int min_year;
-static int min_year_representable;
-static int noise;
-static const char * rfilename;
-static int rlinenum;
-static const char * progname;
-static int timecnt;
-static int typecnt;
-
-/*
-** Line codes.
-*/
-
-#define LC_RULE 0
-#define LC_ZONE 1
-#define LC_LINK 2
-#define LC_LEAP 3
-
-/*
-** Which fields are which on a Zone line.
-*/
-
-#define ZF_NAME 1
-#define ZF_GMTOFF 2
-#define ZF_RULE 3
-#define ZF_FORMAT 4
-#define ZF_TILYEAR 5
-#define ZF_TILMONTH 6
-#define ZF_TILDAY 7
-#define ZF_TILTIME 8
-#define ZONE_MINFIELDS 5
-#define ZONE_MAXFIELDS 9
-
-/*
-** Which fields are which on a Zone continuation line.
-*/
-
-#define ZFC_GMTOFF 0
-#define ZFC_RULE 1
-#define ZFC_FORMAT 2
-#define ZFC_TILYEAR 3
-#define ZFC_TILMONTH 4
-#define ZFC_TILDAY 5
-#define ZFC_TILTIME 6
-#define ZONEC_MINFIELDS 3
-#define ZONEC_MAXFIELDS 7
-
-/*
-** Which files are which on a Rule line.
-*/
-
-#define RF_NAME 1
-#define RF_LOYEAR 2
-#define RF_HIYEAR 3
-#define RF_COMMAND 4
-#define RF_MONTH 5
-#define RF_DAY 6
-#define RF_TOD 7
-#define RF_STDOFF 8
-#define RF_ABBRVAR 9
-#define RULE_FIELDS 10
-
-/*
-** Which fields are which on a Link line.
-*/
-
-#define LF_FROM 1
-#define LF_TO 2
-#define LINK_FIELDS 3
-
-/*
-** Which fields are which on a Leap line.
-*/
-
-#define LP_YEAR 1
-#define LP_MONTH 2
-#define LP_DAY 3
-#define LP_TIME 4
-#define LP_CORR 5
-#define LP_ROLL 6
-#define LEAP_FIELDS 7
-
-/*
-** Year synonyms.
-*/
-
-#define YR_MINIMUM 0
-#define YR_MAXIMUM 1
-#define YR_ONLY 2
-
-static struct rule * rules;
-static int nrules; /* number of rules */
-
-static struct zone * zones;
-static int nzones; /* number of zones */
-
-struct link {
- const char * l_filename;
- int l_linenum;
- const char * l_from;
- const char * l_to;
-};
-
-static struct link * links;
-static int nlinks;
-
-struct lookup {
- const char * l_word;
- const int l_value;
-};
-
-static struct lookup const * byword P((const char * string,
- const struct lookup * lp));
-
-static struct lookup const line_codes[] = {
- { "Rule", LC_RULE },
- { "Zone", LC_ZONE },
- { "Link", LC_LINK },
- { "Leap", LC_LEAP },
- { NULL, 0}
-};
-
-static struct lookup const mon_names[] = {
- { "January", TM_JANUARY },
- { "February", TM_FEBRUARY },
- { "March", TM_MARCH },
- { "April", TM_APRIL },
- { "May", TM_MAY },
- { "June", TM_JUNE },
- { "July", TM_JULY },
- { "August", TM_AUGUST },
- { "September", TM_SEPTEMBER },
- { "October", TM_OCTOBER },
- { "November", TM_NOVEMBER },
- { "December", TM_DECEMBER },
- { NULL, 0 }
-};
-
-static struct lookup const wday_names[] = {
- { "Sunday", TM_SUNDAY },
- { "Monday", TM_MONDAY },
- { "Tuesday", TM_TUESDAY },
- { "Wednesday", TM_WEDNESDAY },
- { "Thursday", TM_THURSDAY },
- { "Friday", TM_FRIDAY },
- { "Saturday", TM_SATURDAY },
- { NULL, 0 }
-};
-
-static struct lookup const lasts[] = {
- { "last-Sunday", TM_SUNDAY },
- { "last-Monday", TM_MONDAY },
- { "last-Tuesday", TM_TUESDAY },
- { "last-Wednesday", TM_WEDNESDAY },
- { "last-Thursday", TM_THURSDAY },
- { "last-Friday", TM_FRIDAY },
- { "last-Saturday", TM_SATURDAY },
- { NULL, 0 }
-};
-
-static struct lookup const begin_years[] = {
- { "minimum", YR_MINIMUM },
- { "maximum", YR_MAXIMUM },
- { NULL, 0 }
-};
-
-static struct lookup const end_years[] = {
- { "minimum", YR_MINIMUM },
- { "maximum", YR_MAXIMUM },
- { "only", YR_ONLY },
- { NULL, 0 }
-};
-
-static struct lookup const leap_types[] = {
- { "Rolling", TRUE },
- { "Stationary", FALSE },
- { NULL, 0 }
-};
-
-static const int len_months[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 len_years[2] = {
- DAYSPERNYEAR, DAYSPERLYEAR
-};
-
-static struct attype {
- time_t at;
- unsigned char type;
-} attypes[TZ_MAX_TIMES];
-static long gmtoffs[TZ_MAX_TYPES];
-static char isdsts[TZ_MAX_TYPES];
-static unsigned char abbrinds[TZ_MAX_TYPES];
-static char ttisstds[TZ_MAX_TYPES];
-static char ttisgmts[TZ_MAX_TYPES];
-static char chars[TZ_MAX_CHARS];
-static time_t trans[TZ_MAX_LEAPS];
-static long corr[TZ_MAX_LEAPS];
-static char roll[TZ_MAX_LEAPS];
-
-/*
-** Memory allocation.
-*/
-
-static char *
-memcheck(ptr)
-char * const ptr;
-{
- if (ptr == NULL) {
- const char *e = strerror(errno);
-
- (void) fprintf(stderr, _("%s: Memory exhausted: %s\n"),
- progname, e);
- (void) exit(EXIT_FAILURE);
- }
- return ptr;
-}
-
-#define emalloc(size) memcheck(imalloc(size))
-#define erealloc(ptr, size) memcheck(irealloc((ptr), (size)))
-#define ecpyalloc(ptr) memcheck(icpyalloc(ptr))
-#define ecatalloc(oldp, newp) memcheck(icatalloc((oldp), (newp)))
-
-/*
-** Error handling.
-*/
-
-#if !(HAVE_STRERROR - 0)
-static char *
-strerror(errnum)
-int errnum;
-{
- extern char * sys_errlist[];
- extern int sys_nerr;
-
- return (errnum > 0 && errnum <= sys_nerr) ?
- sys_errlist[errnum] : _("Unknown system error");
-}
-#endif /* !(HAVE_STRERROR - 0) */
-
-static void
-eats(name, num, rname, rnum)
-const char * const name;
-const int num;
-const char * const rname;
-const int rnum;
-{
- filename = name;
- linenum = num;
- rfilename = rname;
- rlinenum = rnum;
-}
-
-static void
-eat(name, num)
-const char * const name;
-const int num;
-{
- eats(name, num, (char *) NULL, -1);
-}
-
-static void
-error(string)
-const char * const string;
-{
- /*
- ** Match the format of "cc" to allow sh users to
- ** zic ... 2>&1 | error -t "*" -v
- ** on BSD systems.
- */
- (void) fprintf(stderr, _("\"%s\", line %d: %s"),
- filename, linenum, string);
- if (rfilename != NULL)
- (void) fprintf(stderr, _(" (rule from \"%s\", line %d)"),
- rfilename, rlinenum);
- (void) fprintf(stderr, "\n");
- ++errors;
-}
-
-static void
-warning(string)
-const char * const string;
-{
- char * cp;
-
- cp = ecpyalloc(_("warning: "));
- cp = ecatalloc(cp, string);
- error(cp);
- ifree(cp);
- --errors;
-}
-
-static void
-usage P((void))
-{
- (void) fprintf(stderr, _("%s: usage is %s [ --version ] [ -s ] [ -v ] [ -l localtime ] [ -p posixrules ] \\\n\t[ -d directory ] [ -L leapseconds ] [ -y yearistype ] [ filename ... ]\n"),
- progname, progname);
- (void) exit(EXIT_FAILURE);
-}
-
-static const char * psxrules;
-static const char * lcltime;
-static const char * directory;
-static const char * leapsec;
-static const char * yitcommand;
-static int sflag = FALSE;
-
-int
-main(argc, argv)
-int argc;
-char * argv[];
-{
- register int i;
- register int j;
- register int c;
-
-#ifdef unix
- (void) umask(umask(S_IWGRP | S_IWOTH) | (S_IWGRP | S_IWOTH));
-#endif /* defined unix */
-#if HAVE_GETTEXT - 0
- (void) setlocale(LC_MESSAGES, "");
-#ifdef TZ_DOMAINDIR
- (void) bindtextdomain(TZ_DOMAIN, TZ_DOMAINDIR);
-#endif /* defined TEXTDOMAINDIR */
- (void) textdomain(TZ_DOMAIN);
-#endif /* HAVE_GETTEXT - 0 */
- progname = argv[0];
- for (i = 1; i < argc; ++i)
- if (strcmp(argv[i], "--version") == 0) {
- (void) printf("%s\n", elsieid);
- (void) exit(EXIT_SUCCESS);
- }
- while ((c = getopt(argc, argv, "d:l:p:L:vsy:")) != EOF && c != -1)
- switch (c) {
- default:
- usage();
- case 'd':
- if (directory == NULL)
- directory = optarg;
- else {
- (void) fprintf(stderr,
-_("%s: More than one -d option specified\n"),
- progname);
- (void) exit(EXIT_FAILURE);
- }
- break;
- case 'l':
- if (lcltime == NULL)
- lcltime = optarg;
- else {
- (void) fprintf(stderr,
-_("%s: More than one -l option specified\n"),
- progname);
- (void) exit(EXIT_FAILURE);
- }
- break;
- case 'p':
- if (psxrules == NULL)
- psxrules = optarg;
- else {
- (void) fprintf(stderr,
-_("%s: More than one -p option specified\n"),
- progname);
- (void) exit(EXIT_FAILURE);
- }
- break;
- case 'y':
- if (yitcommand == NULL)
- yitcommand = optarg;
- else {
- (void) fprintf(stderr,
-_("%s: More than one -y option specified\n"),
- progname);
- (void) exit(EXIT_FAILURE);
- }
- break;
- case 'L':
- if (leapsec == NULL)
- leapsec = optarg;
- else {
- (void) fprintf(stderr,
-_("%s: More than one -L option specified\n"),
- progname);
- (void) exit(EXIT_FAILURE);
- }
- break;
- case 'v':
- noise = TRUE;
- break;
- case 's':
- sflag = TRUE;
- break;
- }
- if (optind == argc - 1 && strcmp(argv[optind], "=") == 0)
- usage(); /* usage message by request */
- if (directory == NULL)
- directory = TZDIR;
- if (yitcommand == NULL)
- yitcommand = "yearistype";
-
- setboundaries();
-
- if (optind < argc && leapsec != NULL) {
- infile(leapsec);
- adjleap();
- }
-
- for (i = optind; i < argc; ++i)
- infile(argv[i]);
- if (errors)
- (void) exit(EXIT_FAILURE);
- associate();
- for (i = 0; i < nzones; i = j) {
- /*
- ** Find the next non-continuation zone entry.
- */
- for (j = i + 1; j < nzones && zones[j].z_name == NULL; ++j)
- continue;
- outzone(&zones[i], j - i);
- }
- /*
- ** Make links.
- */
- for (i = 0; i < nlinks; ++i) {
- eat(links[i].l_filename, links[i].l_linenum);
- dolink(links[i].l_from, links[i].l_to);
- }
- if (lcltime != NULL) {
- eat("command line", 1);
- dolink(lcltime, TZDEFAULT);
- }
- if (psxrules != NULL) {
- eat("command line", 1);
- dolink(psxrules, TZDEFRULES);
- }
- return (errors == 0) ? EXIT_SUCCESS : EXIT_FAILURE;
-}
-
-static void
-dolink(fromfile, tofile)
-const char * const fromfile;
-const char * const tofile;
-{
- register char * fromname;
- register char * toname;
-
- if (fromfile[0] == '/')
- fromname = ecpyalloc(fromfile);
- else {
- fromname = ecpyalloc(directory);
- fromname = ecatalloc(fromname, "/");
- fromname = ecatalloc(fromname, fromfile);
- }
- if (tofile[0] == '/')
- toname = ecpyalloc(tofile);
- else {
- toname = ecpyalloc(directory);
- toname = ecatalloc(toname, "/");
- toname = ecatalloc(toname, tofile);
- }
- /*
- ** We get to be careful here since
- ** there's a fair chance of root running us.
- */
- if (!itsdir(toname))
- (void) remove(toname);
- if (link(fromname, toname) != 0) {
- int result;
-
- if (mkdirs(toname) != 0)
- (void) exit(EXIT_FAILURE);
-
- result = link(fromname, toname);
-#if (HAVE_SYMLINK - 0)
- if (result != 0 &&
- access(fromname, F_OK) == 0 &&
- !itsdir(fromname)) {
- const char *s = tofile;
- register char * symlinkcontents = NULL;
- while ((s = strchr(s+1, '/')) != NULL)
- symlinkcontents = ecatalloc(symlinkcontents, "../");
- symlinkcontents = ecatalloc(symlinkcontents, fromfile);
-
- result = symlink(symlinkcontents, toname);
- if (result == 0)
-warning(_("hard link failed, symbolic link used"));
- ifree(symlinkcontents);
- }
-#endif
- if (result != 0) {
- const char *e = strerror(errno);
-
- (void) fprintf(stderr,
- _("%s: Can't link from %s to %s: %s\n"),
- progname, fromname, toname, e);
- (void) exit(EXIT_FAILURE);
- }
- }
- ifree(fromname);
- ifree(toname);
-}
-
-#ifndef INT_MAX
-#define INT_MAX ((int) (((unsigned)~0)>>1))
-#endif /* !defined INT_MAX */
-
-#ifndef INT_MIN
-#define INT_MIN ((int) ~(((unsigned)~0)>>1))
-#endif /* !defined INT_MIN */
-
-/*
-** The tz file format currently allows at most 32-bit quantities.
-** This restriction should be removed before signed 32-bit values
-** wrap around in 2038, but unfortunately this will require a
-** change to the tz file format.
-*/
-
-#define MAX_BITS_IN_FILE 32
-#define TIME_T_BITS_IN_FILE ((TYPE_BIT(time_t) < MAX_BITS_IN_FILE) ? TYPE_BIT(time_t) : MAX_BITS_IN_FILE)
-
-static void
-setboundaries P((void))
-{
- if (TYPE_SIGNED(time_t)) {
- min_time = ~ (time_t) 0;
- min_time <<= TIME_T_BITS_IN_FILE - 1;
- max_time = ~ (time_t) 0 - min_time;
- if (sflag)
- min_time = 0;
- } else {
- min_time = 0;
- max_time = 2 - sflag;
- max_time <<= TIME_T_BITS_IN_FILE - 1;
- --max_time;
- }
- min_year = TM_YEAR_BASE + gmtime(&min_time)->tm_year;
- max_year = TM_YEAR_BASE + gmtime(&max_time)->tm_year;
- min_year_representable = min_year;
- max_year_representable = max_year;
-}
-
-static int
-itsdir(name)
-const char * const name;
-{
- register char * myname;
- register int accres;
-
- myname = ecpyalloc(name);
- myname = ecatalloc(myname, "/.");
- accres = access(myname, F_OK);
- ifree(myname);
- return accres == 0;
-}
-
-/*
-** Associate sets of rules with zones.
-*/
-
-/*
-** Sort by rule name.
-*/
-
-static int
-rcomp(cp1, cp2)
-const void * cp1;
-const void * cp2;
-{
- return strcmp(((const struct rule *) cp1)->r_name,
- ((const struct rule *) cp2)->r_name);
-}
-
-static void
-associate P((void))
-{
- register struct zone * zp;
- register struct rule * rp;
- register int base, out;
- register int i, j;
-
- if (nrules != 0) {
- (void) qsort((void *) rules, (size_t) nrules,
- (size_t) sizeof *rules, rcomp);
- for (i = 0; i < nrules - 1; ++i) {
- if (strcmp(rules[i].r_name,
- rules[i + 1].r_name) != 0)
- continue;
- if (strcmp(rules[i].r_filename,
- rules[i + 1].r_filename) == 0)
- continue;
- eat(rules[i].r_filename, rules[i].r_linenum);
- warning(_("same rule name in multiple files"));
- eat(rules[i + 1].r_filename, rules[i + 1].r_linenum);
- warning(_("same rule name in multiple files"));
- for (j = i + 2; j < nrules; ++j) {
- if (strcmp(rules[i].r_name,
- rules[j].r_name) != 0)
- break;
- if (strcmp(rules[i].r_filename,
- rules[j].r_filename) == 0)
- continue;
- if (strcmp(rules[i + 1].r_filename,
- rules[j].r_filename) == 0)
- continue;
- break;
- }
- i = j - 1;
- }
- }
- for (i = 0; i < nzones; ++i) {
- zp = &zones[i];
- zp->z_rules = NULL;
- zp->z_nrules = 0;
- }
- for (base = 0; base < nrules; base = out) {
- rp = &rules[base];
- for (out = base + 1; out < nrules; ++out)
- if (strcmp(rp->r_name, rules[out].r_name) != 0)
- break;
- for (i = 0; i < nzones; ++i) {
- zp = &zones[i];
- if (strcmp(zp->z_rule, rp->r_name) != 0)
- continue;
- zp->z_rules = rp;
- zp->z_nrules = out - base;
- }
- }
- for (i = 0; i < nzones; ++i) {
- zp = &zones[i];
- if (zp->z_nrules == 0) {
- /*
- ** Maybe we have a local standard time offset.
- */
- eat(zp->z_filename, zp->z_linenum);
- zp->z_stdoff = gethms(zp->z_rule, _("unruly zone"),
- TRUE);
- /*
- ** Note, though, that if there's no rule,
- ** a '%s' in the format is a bad thing.
- */
- if (strchr(zp->z_format, '%') != 0)
- error(_("%s in ruleless zone"));
- }
- }
- if (errors)
- (void) exit(EXIT_FAILURE);
-}
-
-static void
-infile(name)
-const char * name;
-{
- register FILE * fp;
- register char ** fields;
- register char * cp;
- register const struct lookup * lp;
- register int nfields;
- register int wantcont;
- register int num;
- char buf[BUFSIZ];
-
- if (strcmp(name, "-") == 0) {
- name = _("standard input");
- fp = stdin;
- } else if ((fp = fopen(name, "r")) == NULL) {
- const char *e = strerror(errno);
-
- (void) fprintf(stderr, _("%s: Can't open %s: %s\n"),
- progname, name, e);
- (void) exit(EXIT_FAILURE);
- }
- wantcont = FALSE;
- for (num = 1; ; ++num) {
- eat(name, num);
- if (fgets(buf, (int) sizeof buf, fp) != buf)
- break;
- cp = strchr(buf, '\n');
- if (cp == NULL) {
- error(_("line too long"));
- (void) exit(EXIT_FAILURE);
- }
- *cp = '\0';
- fields = getfields(buf);
- nfields = 0;
- while (fields[nfields] != NULL) {
- static char nada;
-
- if (strcmp(fields[nfields], "-") == 0)
- fields[nfields] = &nada;
- ++nfields;
- }
- if (nfields == 0) {
- /* nothing to do */
- } else if (wantcont) {
- wantcont = inzcont(fields, nfields);
- } else {
- lp = byword(fields[0], line_codes);
- if (lp == NULL)
- error(_("input line of unknown type"));
- else switch ((int) (lp->l_value)) {
- case LC_RULE:
- inrule(fields, nfields);
- wantcont = FALSE;
- break;
- case LC_ZONE:
- wantcont = inzone(fields, nfields);
- break;
- case LC_LINK:
- inlink(fields, nfields);
- wantcont = FALSE;
- break;
- case LC_LEAP:
- if (name != leapsec)
- (void) fprintf(stderr,
-_("%s: Leap line in non leap seconds file %s\n"),
- progname, name);
- else inleap(fields, nfields);
- wantcont = FALSE;
- break;
- default: /* "cannot happen" */
- (void) fprintf(stderr,
-_("%s: panic: Invalid l_value %d\n"),
- progname, lp->l_value);
- (void) exit(EXIT_FAILURE);
- }
- }
- ifree((char *) fields);
- }
- if (ferror(fp)) {
- (void) fprintf(stderr, _("%s: Error reading %s\n"),
- progname, filename);
- (void) exit(EXIT_FAILURE);
- }
- if (fp != stdin && fclose(fp)) {
- const char *e = strerror(errno);
-
- (void) fprintf(stderr, _("%s: Error closing %s: %s\n"),
- progname, filename, e);
- (void) exit(EXIT_FAILURE);
- }
- if (wantcont)
- error(_("expected continuation line not found"));
-}
-
-/*
-** Convert a string of one of the forms
-** h -h hh:mm -hh:mm hh:mm:ss -hh:mm:ss
-** into a number of seconds.
-** A null string maps to zero.
-** Call error with errstring and return zero on errors.
-*/
-
-static long
-gethms(string, errstring, signable)
-const char * string;
-const char * const errstring;
-const int signable;
-{
- int hh, mm, ss, sign;
-
- if (string == NULL || *string == '\0')
- return 0;
- if (!signable)
- sign = 1;
- else if (*string == '-') {
- sign = -1;
- ++string;
- } else sign = 1;
- if (sscanf(string, scheck(string, "%d"), &hh) == 1)
- mm = ss = 0;
- else if (sscanf(string, scheck(string, "%d:%d"), &hh, &mm) == 2)
- ss = 0;
- else if (sscanf(string, scheck(string, "%d:%d:%d"),
- &hh, &mm, &ss) != 3) {
- error(errstring);
- return 0;
- }
- if ((hh < 0 || hh >= HOURSPERDAY ||
- mm < 0 || mm >= MINSPERHOUR ||
- ss < 0 || ss > SECSPERMIN) &&
- !(hh == HOURSPERDAY && mm == 0 && ss == 0)) {
- error(errstring);
- return 0;
- }
- if (noise && hh == HOURSPERDAY)
- warning(_("24:00 not handled by pre-1998 versions of zic"));
- return eitol(sign) *
- (eitol(hh * MINSPERHOUR + mm) *
- eitol(SECSPERMIN) + eitol(ss));
-}
-
-static void
-inrule(fields, nfields)
-register char ** const fields;
-const int nfields;
-{
- static struct rule r;
-
- if (nfields != RULE_FIELDS) {
- error(_("wrong number of fields on Rule line"));
- return;
- }
- if (*fields[RF_NAME] == '\0') {
- error(_("nameless rule"));
- return;
- }
- r.r_filename = filename;
- r.r_linenum = linenum;
- r.r_stdoff = gethms(fields[RF_STDOFF], _("invalid saved time"), TRUE);
- rulesub(&r, fields[RF_LOYEAR], fields[RF_HIYEAR], fields[RF_COMMAND],
- fields[RF_MONTH], fields[RF_DAY], fields[RF_TOD]);
- r.r_name = ecpyalloc(fields[RF_NAME]);
- r.r_abbrvar = ecpyalloc(fields[RF_ABBRVAR]);
- rules = (struct rule *) (void *) erealloc((char *) rules,
- (int) ((nrules + 1) * sizeof *rules));
- rules[nrules++] = r;
-}
-
-static int
-inzone(fields, nfields)
-register char ** const fields;
-const int nfields;
-{
- register int i;
- static char * buf;
-
- if (nfields < ZONE_MINFIELDS || nfields > ZONE_MAXFIELDS) {
- error(_("wrong number of fields on Zone line"));
- return FALSE;
- }
- if (strcmp(fields[ZF_NAME], TZDEFAULT) == 0 && lcltime != NULL) {
- buf = erealloc(buf, (int) (132 + strlen(TZDEFAULT)));
- (void) sprintf(buf,
-_("\"Zone %s\" line and -l option are mutually exclusive"),
- TZDEFAULT);
- error(buf);
- return FALSE;
- }
- if (strcmp(fields[ZF_NAME], TZDEFRULES) == 0 && psxrules != NULL) {
- buf = erealloc(buf, (int) (132 + strlen(TZDEFRULES)));
- (void) sprintf(buf,
-_("\"Zone %s\" line and -p option are mutually exclusive"),
- TZDEFRULES);
- error(buf);
- return FALSE;
- }
- for (i = 0; i < nzones; ++i)
- if (zones[i].z_name != NULL &&
- strcmp(zones[i].z_name, fields[ZF_NAME]) == 0) {
- buf = erealloc(buf, (int) (132 +
- strlen(fields[ZF_NAME]) +
- strlen(zones[i].z_filename)));
- (void) sprintf(buf,
-_("duplicate zone name %s (file \"%s\", line %d)"),
- fields[ZF_NAME],
- zones[i].z_filename,
- zones[i].z_linenum);
- error(buf);
- return FALSE;
- }
- return inzsub(fields, nfields, FALSE);
-}
-
-static int
-inzcont(fields, nfields)
-register char ** const fields;
-const int nfields;
-{
- if (nfields < ZONEC_MINFIELDS || nfields > ZONEC_MAXFIELDS) {
- error(_("wrong number of fields on Zone continuation line"));
- return FALSE;
- }
- return inzsub(fields, nfields, TRUE);
-}
-
-static int
-inzsub(fields, nfields, iscont)
-register char ** const fields;
-const int nfields;
-const int iscont;
-{
- register char * cp;
- static struct zone z;
- register int i_gmtoff, i_rule, i_format;
- register int i_untilyear, i_untilmonth;
- register int i_untilday, i_untiltime;
- register int hasuntil;
-
- if (iscont) {
- i_gmtoff = ZFC_GMTOFF;
- i_rule = ZFC_RULE;
- i_format = ZFC_FORMAT;
- i_untilyear = ZFC_TILYEAR;
- i_untilmonth = ZFC_TILMONTH;
- i_untilday = ZFC_TILDAY;
- i_untiltime = ZFC_TILTIME;
- z.z_name = NULL;
- } else {
- i_gmtoff = ZF_GMTOFF;
- i_rule = ZF_RULE;
- i_format = ZF_FORMAT;
- i_untilyear = ZF_TILYEAR;
- i_untilmonth = ZF_TILMONTH;
- i_untilday = ZF_TILDAY;
- i_untiltime = ZF_TILTIME;
- z.z_name = ecpyalloc(fields[ZF_NAME]);
- }
- z.z_filename = filename;
- z.z_linenum = linenum;
- z.z_gmtoff = gethms(fields[i_gmtoff], _("invalid UTC offset"), TRUE);
- if ((cp = strchr(fields[i_format], '%')) != 0) {
- if (*++cp != 's' || strchr(cp, '%') != 0) {
- error(_("invalid abbreviation format"));
- return FALSE;
- }
- }
- z.z_rule = ecpyalloc(fields[i_rule]);
- z.z_format = ecpyalloc(fields[i_format]);
- hasuntil = nfields > i_untilyear;
- if (hasuntil) {
- z.z_untilrule.r_filename = filename;
- z.z_untilrule.r_linenum = linenum;
- rulesub(&z.z_untilrule,
- fields[i_untilyear],
- "only",
- "",
- (nfields > i_untilmonth) ?
- fields[i_untilmonth] : "Jan",
- (nfields > i_untilday) ? fields[i_untilday] : "1",
- (nfields > i_untiltime) ? fields[i_untiltime] : "0");
- z.z_untiltime = rpytime(&z.z_untilrule,
- z.z_untilrule.r_loyear);
- if (iscont && nzones > 0 &&
- z.z_untiltime > min_time &&
- z.z_untiltime < max_time &&
- zones[nzones - 1].z_untiltime > min_time &&
- zones[nzones - 1].z_untiltime < max_time &&
- zones[nzones - 1].z_untiltime >= z.z_untiltime) {
- error(_("Zone continuation line end time is not after end time of previous line"));
- return FALSE;
- }
- }
- zones = (struct zone *) (void *) erealloc((char *) zones,
- (int) ((nzones + 1) * sizeof *zones));
- zones[nzones++] = z;
- /*
- ** If there was an UNTIL field on this line,
- ** there's more information about the zone on the next line.
- */
- return hasuntil;
-}
-
-static void
-inleap(fields, nfields)
-register char ** const fields;
-const int nfields;
-{
- register const char * cp;
- register const struct lookup * lp;
- register int i, j;
- int year, month, day;
- long dayoff, tod;
- time_t t;
-
- if (nfields != LEAP_FIELDS) {
- error(_("wrong number of fields on Leap line"));
- return;
- }
- dayoff = 0;
- cp = fields[LP_YEAR];
- if (sscanf(cp, scheck(cp, "%d"), &year) != 1) {
- /*
- * Leapin' Lizards!
- */
- error(_("invalid leaping year"));
- return;
- }
- j = EPOCH_YEAR;
- while (j != year) {
- if (year > j) {
- i = len_years[isleap(j)];
- ++j;
- } else {
- --j;
- i = -len_years[isleap(j)];
- }
- dayoff = oadd(dayoff, eitol(i));
- }
- if ((lp = byword(fields[LP_MONTH], mon_names)) == NULL) {
- error(_("invalid month name"));
- return;
- }
- month = lp->l_value;
- j = TM_JANUARY;
- while (j != month) {
- i = len_months[isleap(year)][j];
- dayoff = oadd(dayoff, eitol(i));
- ++j;
- }
- cp = fields[LP_DAY];
- if (sscanf(cp, scheck(cp, "%d"), &day) != 1 ||
- day <= 0 || day > len_months[isleap(year)][month]) {
- error(_("invalid day of month"));
- return;
- }
- dayoff = oadd(dayoff, eitol(day - 1));
- if (dayoff < 0 && !TYPE_SIGNED(time_t)) {
- error(_("time before zero"));
- return;
- }
- if (dayoff < min_time / SECSPERDAY) {
- error(_("time too small"));
- return;
- }
- if (dayoff > max_time / SECSPERDAY) {
- error(_("time too large"));
- return;
- }
- t = (time_t) dayoff * SECSPERDAY;
- tod = gethms(fields[LP_TIME], _("invalid time of day"), FALSE);
- cp = fields[LP_CORR];
- {
- register int positive;
- int count;
-
- if (strcmp(cp, "") == 0) { /* infile() turns "-" into "" */
- positive = FALSE;
- count = 1;
- } else if (strcmp(cp, "--") == 0) {
- positive = FALSE;
- count = 2;
- } else if (strcmp(cp, "+") == 0) {
- positive = TRUE;
- count = 1;
- } else if (strcmp(cp, "++") == 0) {
- positive = TRUE;
- count = 2;
- } else {
- error(_("illegal CORRECTION field on Leap line"));
- return;
- }
- if ((lp = byword(fields[LP_ROLL], leap_types)) == NULL) {
- error(_("illegal Rolling/Stationary field on Leap line"));
- return;
- }
- leapadd(tadd(t, tod), positive, lp->l_value, count);
- }
-}
-
-static void
-inlink(fields, nfields)
-register char ** const fields;
-const int nfields;
-{
- struct link l;
-
- if (nfields != LINK_FIELDS) {
- error(_("wrong number of fields on Link line"));
- return;
- }
- if (*fields[LF_FROM] == '\0') {
- error(_("blank FROM field on Link line"));
- return;
- }
- if (*fields[LF_TO] == '\0') {
- error(_("blank TO field on Link line"));
- return;
- }
- l.l_filename = filename;
- l.l_linenum = linenum;
- l.l_from = ecpyalloc(fields[LF_FROM]);
- l.l_to = ecpyalloc(fields[LF_TO]);
- links = (struct link *) (void *) erealloc((char *) links,
- (int) ((nlinks + 1) * sizeof *links));
- links[nlinks++] = l;
-}
-
-static void
-rulesub(rp, loyearp, hiyearp, typep, monthp, dayp, timep)
-register struct rule * const rp;
-const char * const loyearp;
-const char * const hiyearp;
-const char * const typep;
-const char * const monthp;
-const char * const dayp;
-const char * const timep;
-{
- register const struct lookup * lp;
- register const char * cp;
- register char * dp;
- register char * ep;
-
- if ((lp = byword(monthp, mon_names)) == NULL) {
- error(_("invalid month name"));
- return;
- }
- rp->r_month = lp->l_value;
- rp->r_todisstd = FALSE;
- rp->r_todisgmt = FALSE;
- dp = ecpyalloc(timep);
- if (*dp != '\0') {
- ep = dp + strlen(dp) - 1;
- switch (lowerit(*ep)) {
- case 's': /* Standard */
- rp->r_todisstd = TRUE;
- rp->r_todisgmt = FALSE;
- *ep = '\0';
- break;
- case 'w': /* Wall */
- rp->r_todisstd = FALSE;
- rp->r_todisgmt = FALSE;
- *ep = '\0';
- break;
- case 'g': /* Greenwich */
- case 'u': /* Universal */
- case 'z': /* Zulu */
- rp->r_todisstd = TRUE;
- rp->r_todisgmt = TRUE;
- *ep = '\0';
- break;
- }
- }
- rp->r_tod = gethms(dp, _("invalid time of day"), FALSE);
- ifree(dp);
- /*
- ** Year work.
- */
- cp = loyearp;
- lp = byword(cp, begin_years);
- if (lp != NULL) switch ((int) lp->l_value) {
- case YR_MINIMUM:
- rp->r_loyear = INT_MIN;
- break;
- case YR_MAXIMUM:
- rp->r_loyear = INT_MAX;
- break;
- default: /* "cannot happen" */
- (void) fprintf(stderr,
- _("%s: panic: Invalid l_value %d\n"),
- progname, lp->l_value);
- (void) exit(EXIT_FAILURE);
- } else if (sscanf(cp, scheck(cp, "%d"), &rp->r_loyear) != 1) {
- error(_("invalid starting year"));
- return;
- } else if (noise) {
- if (rp->r_loyear < min_year_representable)
- warning(_("starting year too low to be represented"));
- else if (rp->r_loyear > max_year_representable)
- warning(_("starting year too high to be represented"));
- }
- cp = hiyearp;
- if ((lp = byword(cp, end_years)) != NULL) switch ((int) lp->l_value) {
- case YR_MINIMUM:
- rp->r_hiyear = INT_MIN;
- break;
- case YR_MAXIMUM:
- rp->r_hiyear = INT_MAX;
- break;
- case YR_ONLY:
- rp->r_hiyear = rp->r_loyear;
- break;
- default: /* "cannot happen" */
- (void) fprintf(stderr,
- _("%s: panic: Invalid l_value %d\n"),
- progname, lp->l_value);
- (void) exit(EXIT_FAILURE);
- } else if (sscanf(cp, scheck(cp, "%d"), &rp->r_hiyear) != 1) {
- error(_("invalid ending year"));
- return;
- } else if (noise) {
- if (rp->r_loyear < min_year_representable)
- warning(_("ending year too low to be represented"));
- else if (rp->r_loyear > max_year_representable)
- warning(_("ending year too high to be represented"));
- }
- if (rp->r_loyear > rp->r_hiyear) {
- error(_("starting year greater than ending year"));
- return;
- }
- if (*typep == '\0')
- rp->r_yrtype = NULL;
- else {
- if (rp->r_loyear == rp->r_hiyear) {
- error(_("typed single year"));
- return;
- }
- rp->r_yrtype = ecpyalloc(typep);
- }
- if (rp->r_loyear < min_year && rp->r_loyear > 0)
- min_year = rp->r_loyear;
- /*
- ** Day work.
- ** Accept things such as:
- ** 1
- ** last-Sunday
- ** Sun<=20
- ** Sun>=7
- */
- dp = ecpyalloc(dayp);
- if ((lp = byword(dp, lasts)) != NULL) {
- rp->r_dycode = DC_DOWLEQ;
- rp->r_wday = lp->l_value;
- rp->r_dayofmonth = len_months[1][rp->r_month];
- } else {
- if ((ep = strchr(dp, '<')) != 0)
- rp->r_dycode = DC_DOWLEQ;
- else if ((ep = strchr(dp, '>')) != 0)
- rp->r_dycode = DC_DOWGEQ;
- else {
- ep = dp;
- rp->r_dycode = DC_DOM;
- }
- if (rp->r_dycode != DC_DOM) {
- *ep++ = 0;
- if (*ep++ != '=') {
- error(_("invalid day of month"));
- ifree(dp);
- return;
- }
- if ((lp = byword(dp, wday_names)) == NULL) {
- error(_("invalid weekday name"));
- ifree(dp);
- return;
- }
- rp->r_wday = lp->l_value;
- }
- if (sscanf(ep, scheck(ep, "%d"), &rp->r_dayofmonth) != 1 ||
- rp->r_dayofmonth <= 0 ||
- (rp->r_dayofmonth > len_months[1][rp->r_month])) {
- error(_("invalid day of month"));
- ifree(dp);
- return;
- }
- }
- ifree(dp);
-}
-
-static void
-convert(val, buf)
-const long val;
-char * const buf;
-{
- register int i;
- register long shift;
-
- for (i = 0, shift = 24; i < 4; ++i, shift -= 8)
- buf[i] = val >> shift;
-}
-
-static void
-puttzcode(val, fp)
-const long val;
-FILE * const fp;
-{
- char buf[4];
-
- convert(val, buf);
- (void) fwrite((void *) buf, (size_t) sizeof buf, (size_t) 1, fp);
-}
-
-static int
-atcomp(avp, bvp)
-void * avp;
-void * bvp;
-{
- if (((struct attype *) avp)->at < ((struct attype *) bvp)->at)
- return -1;
- else if (((struct attype *) avp)->at > ((struct attype *) bvp)->at)
- return 1;
- else return 0;
-}
-
-static void
-writezone(name)
-const char * const name;
-{
- register FILE * fp;
- register int i, j;
- static char * fullname;
- static struct tzhead tzh;
- time_t ats[TZ_MAX_TIMES];
- unsigned char types[TZ_MAX_TIMES];
-
- /*
- ** Sort.
- */
- if (timecnt > 1)
- (void) qsort((void *) attypes, (size_t) timecnt,
- (size_t) sizeof *attypes, atcomp);
- /*
- ** Optimize.
- */
- {
- int fromi;
- int toi;
-
- toi = 0;
- fromi = 0;
- while (fromi < timecnt && attypes[fromi].at < min_time)
- ++fromi;
- if (isdsts[0] == 0)
- while (fromi < timecnt && attypes[fromi].type == 0)
- ++fromi; /* handled by default rule */
- for ( ; fromi < timecnt; ++fromi) {
- if (toi != 0
- && ((attypes[fromi].at
- + gmtoffs[attypes[toi - 1].type])
- <= (attypes[toi - 1].at
- + gmtoffs[toi == 1 ? 0
- : attypes[toi - 2].type]))) {
- attypes[toi - 1].type = attypes[fromi].type;
- continue;
- }
- if (toi == 0 ||
- attypes[toi - 1].type != attypes[fromi].type)
- attypes[toi++] = attypes[fromi];
- }
- timecnt = toi;
- }
- /*
- ** Transfer.
- */
- for (i = 0; i < timecnt; ++i) {
- ats[i] = attypes[i].at;
- types[i] = attypes[i].type;
- }
- fullname = erealloc(fullname,
- (int) (strlen(directory) + 1 + strlen(name) + 1));
- (void) sprintf(fullname, "%s/%s", directory, name);
- /*
- ** Remove old file, if any, to snap links.
- */
- if (!itsdir(fullname) && remove(fullname) != 0 && errno != ENOENT) {
- const char *e = strerror(errno);
-
- (void) fprintf(stderr, _("%s: Can't remove %s: %s\n"),
- progname, fullname, e);
- (void) exit(EXIT_FAILURE);
- }
- if ((fp = fopen(fullname, "wb")) == NULL) {
- if (mkdirs(fullname) != 0)
- (void) exit(EXIT_FAILURE);
- if ((fp = fopen(fullname, "wb")) == NULL) {
- const char *e = strerror(errno);
-
- (void) fprintf(stderr, _("%s: Can't create %s: %s\n"),
- progname, fullname, e);
- (void) exit(EXIT_FAILURE);
- }
- }
- convert(eitol(typecnt), tzh.tzh_ttisgmtcnt);
- convert(eitol(typecnt), tzh.tzh_ttisstdcnt);
- convert(eitol(leapcnt), tzh.tzh_leapcnt);
- convert(eitol(timecnt), tzh.tzh_timecnt);
- convert(eitol(typecnt), tzh.tzh_typecnt);
- convert(eitol(charcnt), tzh.tzh_charcnt);
- (void) strncpy(tzh.tzh_magic, TZ_MAGIC, sizeof tzh.tzh_magic);
-#define DO(field) (void) fwrite((void *) tzh.field, (size_t) sizeof tzh.field, (size_t) 1, fp)
- DO(tzh_magic);
- DO(tzh_reserved);
- DO(tzh_ttisgmtcnt);
- DO(tzh_ttisstdcnt);
- DO(tzh_leapcnt);
- DO(tzh_timecnt);
- DO(tzh_typecnt);
- DO(tzh_charcnt);
-#undef DO
- for (i = 0; i < timecnt; ++i) {
- j = leapcnt;
- while (--j >= 0)
- if (ats[i] >= trans[j]) {
- ats[i] = tadd(ats[i], corr[j]);
- break;
- }
- puttzcode((long) ats[i], fp);
- }
- if (timecnt > 0)
- (void) fwrite((void *) types, (size_t) sizeof types[0],
- (size_t) timecnt, fp);
- for (i = 0; i < typecnt; ++i) {
- puttzcode((long) gmtoffs[i], fp);
- (void) putc(isdsts[i], fp);
- (void) putc(abbrinds[i], fp);
- }
- if (charcnt != 0)
- (void) fwrite((void *) chars, (size_t) sizeof chars[0],
- (size_t) charcnt, fp);
- for (i = 0; i < leapcnt; ++i) {
- if (roll[i]) {
- if (timecnt == 0 || trans[i] < ats[0]) {
- j = 0;
- while (isdsts[j])
- if (++j >= typecnt) {
- j = 0;
- break;
- }
- } else {
- j = 1;
- while (j < timecnt && trans[i] >= ats[j])
- ++j;
- j = types[j - 1];
- }
- puttzcode((long) tadd(trans[i], -gmtoffs[j]), fp);
- } else puttzcode((long) trans[i], fp);
- puttzcode((long) corr[i], fp);
- }
- for (i = 0; i < typecnt; ++i)
- (void) putc(ttisstds[i], fp);
- for (i = 0; i < typecnt; ++i)
- (void) putc(ttisgmts[i], fp);
- if (ferror(fp) || fclose(fp)) {
- (void) fprintf(stderr, _("%s: Error writing %s\n"),
- progname, fullname);
- (void) exit(EXIT_FAILURE);
- }
-}
-
-static void
-doabbr(abbr, format, letters, isdst)
-char * const abbr;
-const char * const format;
-const char * const letters;
-const int isdst;
-{
- if (strchr(format, '/') == NULL) {
- if (letters == NULL)
- (void) strcpy(abbr, format);
- else (void) sprintf(abbr, format, letters);
- } else if (isdst)
- (void) strcpy(abbr, strchr(format, '/') + 1);
- else {
- (void) strcpy(abbr, format);
- *strchr(abbr, '/') = '\0';
- }
-}
-
-static void
-outzone(zpfirst, zonecount)
-const struct zone * const zpfirst;
-const int zonecount;
-{
- register const struct zone * zp;
- register struct rule * rp;
- register int i, j;
- register int usestart, useuntil;
- register time_t starttime, untiltime;
- register long gmtoff;
- register long stdoff;
- register int year;
- register long startoff;
- register int startttisstd;
- register int startttisgmt;
- register int type;
- char startbuf[BUFSIZ];
-
- INITIALIZE(untiltime);
- INITIALIZE(starttime);
- /*
- ** Now. . .finally. . .generate some useful data!
- */
- timecnt = 0;
- typecnt = 0;
- charcnt = 0;
- /*
- ** Thanks to Earl Chew (earl@dnd.icp.nec.com.au)
- ** for noting the need to unconditionally initialize startttisstd.
- */
- startttisstd = FALSE;
- startttisgmt = FALSE;
- for (i = 0; i < zonecount; ++i) {
- /*
- ** A guess that may well be corrected later.
- */
- stdoff = 0;
- zp = &zpfirst[i];
- usestart = i > 0 && (zp - 1)->z_untiltime > min_time;
- useuntil = i < (zonecount - 1);
- if (useuntil && zp->z_untiltime <= min_time)
- continue;
- gmtoff = zp->z_gmtoff;
- eat(zp->z_filename, zp->z_linenum);
- *startbuf = '\0';
- startoff = zp->z_gmtoff;
- if (zp->z_nrules == 0) {
- stdoff = zp->z_stdoff;
- doabbr(startbuf, zp->z_format,
- (char *) NULL, stdoff != 0);
- type = addtype(oadd(zp->z_gmtoff, stdoff),
- startbuf, stdoff != 0, startttisstd,
- startttisgmt);
- if (usestart) {
- addtt(starttime, type);
- usestart = FALSE;
- } else if (stdoff != 0)
- addtt(min_time, type);
- } else for (year = min_year; year <= max_year; ++year) {
- if (useuntil && year > zp->z_untilrule.r_hiyear)
- break;
- /*
- ** Mark which rules to do in the current year.
- ** For those to do, calculate rpytime(rp, year);
- */
- for (j = 0; j < zp->z_nrules; ++j) {
- rp = &zp->z_rules[j];
- eats(zp->z_filename, zp->z_linenum,
- rp->r_filename, rp->r_linenum);
- rp->r_todo = year >= rp->r_loyear &&
- year <= rp->r_hiyear &&
- yearistype(year, rp->r_yrtype);
- if (rp->r_todo)
- rp->r_temp = rpytime(rp, year);
- }
- for ( ; ; ) {
- register int k;
- register time_t jtime, ktime;
- register long offset;
- char buf[BUFSIZ];
-
- INITIALIZE(ktime);
- if (useuntil) {
- /*
- ** Turn untiltime into UTC
- ** assuming the current gmtoff and
- ** stdoff values.
- */
- untiltime = zp->z_untiltime;
- if (!zp->z_untilrule.r_todisgmt)
- untiltime = tadd(untiltime,
- -gmtoff);
- if (!zp->z_untilrule.r_todisstd)
- untiltime = tadd(untiltime,
- -stdoff);
- }
- /*
- ** Find the rule (of those to do, if any)
- ** that takes effect earliest in the year.
- */
- k = -1;
- for (j = 0; j < zp->z_nrules; ++j) {
- rp = &zp->z_rules[j];
- if (!rp->r_todo)
- continue;
- eats(zp->z_filename, zp->z_linenum,
- rp->r_filename, rp->r_linenum);
- offset = rp->r_todisgmt ? 0 : gmtoff;
- if (!rp->r_todisstd)
- offset = oadd(offset, stdoff);
- jtime = rp->r_temp;
- if (jtime == min_time ||
- jtime == max_time)
- continue;
- jtime = tadd(jtime, -offset);
- if (k < 0 || jtime < ktime) {
- k = j;
- ktime = jtime;
- }
- }
- if (k < 0)
- break; /* go on to next year */
- rp = &zp->z_rules[k];
- rp->r_todo = FALSE;
- if (useuntil && ktime >= untiltime)
- break;
- stdoff = rp->r_stdoff;
- if (usestart && ktime == starttime)
- usestart = FALSE;
- if (usestart) {
- if (ktime < starttime) {
- startoff = oadd(zp->z_gmtoff,
- stdoff);
- doabbr(startbuf, zp->z_format,
- rp->r_abbrvar,
- rp->r_stdoff != 0);
- continue;
- }
- if (*startbuf == '\0' &&
- startoff == oadd(zp->z_gmtoff,
- stdoff)) {
- doabbr(startbuf, zp->z_format,
- rp->r_abbrvar,
- rp->r_stdoff != 0);
- }
- }
- eats(zp->z_filename, zp->z_linenum,
- rp->r_filename, rp->r_linenum);
- doabbr(buf, zp->z_format, rp->r_abbrvar,
- rp->r_stdoff != 0);
- offset = oadd(zp->z_gmtoff, rp->r_stdoff);
- type = addtype(offset, buf, rp->r_stdoff != 0,
- rp->r_todisstd, rp->r_todisgmt);
- addtt(ktime, type);
- }
- }
- if (usestart) {
- if (*startbuf == '\0' &&
- zp->z_format != NULL &&
- strchr(zp->z_format, '%') == NULL &&
- strchr(zp->z_format, '/') == NULL)
- (void) strcpy(startbuf, zp->z_format);
- eat(zp->z_filename, zp->z_linenum);
- if (*startbuf == '\0')
-error(_("can't determine time zone abbreviation to use just after until time"));
- else addtt(starttime,
- addtype(startoff, startbuf,
- startoff != zp->z_gmtoff,
- startttisstd,
- startttisgmt));
- }
- /*
- ** Now we may get to set starttime for the next zone line.
- */
- if (useuntil) {
- startttisstd = zp->z_untilrule.r_todisstd;
- startttisgmt = zp->z_untilrule.r_todisgmt;
- starttime = zp->z_untiltime;
- if (!startttisstd)
- starttime = tadd(starttime, -stdoff);
- if (!startttisgmt)
- starttime = tadd(starttime, -gmtoff);
- }
- }
- writezone(zpfirst->z_name);
-}
-
-static void
-addtt(starttime, type)
-const time_t starttime;
-int type;
-{
- if (starttime <= min_time ||
- (timecnt == 1 && attypes[0].at < min_time)) {
- gmtoffs[0] = gmtoffs[type];
- isdsts[0] = isdsts[type];
- ttisstds[0] = ttisstds[type];
- ttisgmts[0] = ttisgmts[type];
- if (abbrinds[type] != 0)
- (void) strcpy(chars, &chars[abbrinds[type]]);
- abbrinds[0] = 0;
- charcnt = strlen(chars) + 1;
- typecnt = 1;
- timecnt = 0;
- type = 0;
- }
- if (timecnt >= TZ_MAX_TIMES) {
- error(_("too many transitions?!"));
- (void) exit(EXIT_FAILURE);
- }
- attypes[timecnt].at = starttime;
- attypes[timecnt].type = type;
- ++timecnt;
-}
-
-static int
-addtype(gmtoff, abbr, isdst, ttisstd, ttisgmt)
-const long gmtoff;
-const char * const abbr;
-const int isdst;
-const int ttisstd;
-const int ttisgmt;
-{
- register int i, j;
-
- if (isdst != TRUE && isdst != FALSE) {
- error(_("internal error - addtype called with bad isdst"));
- (void) exit(EXIT_FAILURE);
- }
- if (ttisstd != TRUE && ttisstd != FALSE) {
- error(_("internal error - addtype called with bad ttisstd"));
- (void) exit(EXIT_FAILURE);
- }
- if (ttisgmt != TRUE && ttisgmt != FALSE) {
- error(_("internal error - addtype called with bad ttisgmt"));
- (void) exit(EXIT_FAILURE);
- }
- /*
- ** See if there's already an entry for this zone type.
- ** If so, just return its index.
- */
- for (i = 0; i < typecnt; ++i) {
- if (gmtoff == gmtoffs[i] && isdst == isdsts[i] &&
- strcmp(abbr, &chars[abbrinds[i]]) == 0 &&
- ttisstd == ttisstds[i] &&
- ttisgmt == ttisgmts[i])
- return i;
- }
- /*
- ** There isn't one; add a new one, unless there are already too
- ** many.
- */
- if (typecnt >= TZ_MAX_TYPES) {
- error(_("too many local time types"));
- (void) exit(EXIT_FAILURE);
- }
- gmtoffs[i] = gmtoff;
- isdsts[i] = isdst;
- ttisstds[i] = ttisstd;
- ttisgmts[i] = ttisgmt;
-
- for (j = 0; j < charcnt; ++j)
- if (strcmp(&chars[j], abbr) == 0)
- break;
- if (j == charcnt)
- newabbr(abbr);
- abbrinds[i] = j;
- ++typecnt;
- return i;
-}
-
-static void
-leapadd(t, positive, rolling, count)
-const time_t t;
-const int positive;
-const int rolling;
-int count;
-{
- register int i, j;
-
- if (leapcnt + (positive ? count : 1) > TZ_MAX_LEAPS) {
- error(_("too many leap seconds"));
- (void) exit(EXIT_FAILURE);
- }
- for (i = 0; i < leapcnt; ++i)
- if (t <= trans[i]) {
- if (t == trans[i]) {
- error(_("repeated leap second moment"));
- (void) exit(EXIT_FAILURE);
- }
- break;
- }
- do {
- for (j = leapcnt; j > i; --j) {
- trans[j] = trans[j - 1];
- corr[j] = corr[j - 1];
- roll[j] = roll[j - 1];
- }
- trans[i] = t;
- corr[i] = positive ? 1L : eitol(-count);
- roll[i] = rolling;
- ++leapcnt;
- } while (positive && --count != 0);
-}
-
-static void
-adjleap P((void))
-{
- register int i;
- register long last = 0;
-
- /*
- ** propagate leap seconds forward
- */
- for (i = 0; i < leapcnt; ++i) {
- trans[i] = tadd(trans[i], last);
- last = corr[i] += last;
- }
-}
-
-static int
-yearistype(year, type)
-const int year;
-const char * const type;
-{
- static char * buf;
- int result;
-
- if (type == NULL || *type == '\0')
- return TRUE;
- buf = erealloc(buf, (int) (132 + strlen(yitcommand) + strlen(type)));
- (void) sprintf(buf, "%s %d %s", yitcommand, year, type);
- result = system(buf);
- if (WIFEXITED(result)) switch (WEXITSTATUS(result)) {
- case 0:
- return TRUE;
- case 1:
- return FALSE;
- }
- error(_("Wild result from command execution"));
- (void) fprintf(stderr, _("%s: command was '%s', result was %d\n"),
- progname, buf, result);
- for ( ; ; )
- (void) exit(EXIT_FAILURE);
-}
-
-static int
-lowerit(a)
-int a;
-{
- a = (unsigned char) a;
- return (isascii(a) && isupper(a)) ? tolower(a) : a;
-}
-
-static int
-ciequal(ap, bp) /* case-insensitive equality */
-register const char * ap;
-register const char * bp;
-{
- while (lowerit(*ap) == lowerit(*bp++))
- if (*ap++ == '\0')
- return TRUE;
- return FALSE;
-}
-
-static int
-itsabbr(abbr, word)
-register const char * abbr;
-register const char * word;
-{
- if (lowerit(*abbr) != lowerit(*word))
- return FALSE;
- ++word;
- while (*++abbr != '\0')
- do {
- if (*word == '\0')
- return FALSE;
- } while (lowerit(*word++) != lowerit(*abbr));
- return TRUE;
-}
-
-static const struct lookup *
-byword(word, table)
-register const char * const word;
-register const struct lookup * const table;
-{
- register const struct lookup * foundlp;
- register const struct lookup * lp;
-
- if (word == NULL || table == NULL)
- return NULL;
- /*
- ** Look for exact match.
- */
- for (lp = table; lp->l_word != NULL; ++lp)
- if (ciequal(word, lp->l_word))
- return lp;
- /*
- ** Look for inexact match.
- */
- foundlp = NULL;
- for (lp = table; lp->l_word != NULL; ++lp)
- if (itsabbr(word, lp->l_word)) {
- if (foundlp == NULL)
- foundlp = lp;
- else return NULL; /* multiple inexact matches */
- }
- return foundlp;
-}
-
-static char **
-getfields(cp)
-register char * cp;
-{
- register char * dp;
- register char ** array;
- register int nsubs;
-
- if (cp == NULL)
- return NULL;
- array = (char **) (void *)
- emalloc((int) ((strlen(cp) + 1) * sizeof *array));
- nsubs = 0;
- for ( ; ; ) {
- while (isascii(*cp) && isspace((unsigned char) *cp))
- ++cp;
- if (*cp == '\0' || *cp == '#')
- break;
- array[nsubs++] = dp = cp;
- do {
- if ((*dp = *cp++) != '"')
- ++dp;
- else while ((*dp = *cp++) != '"')
- if (*dp != '\0')
- ++dp;
- else error(_("Odd number of quotation marks"));
- } while (*cp != '\0' && *cp != '#' &&
- (!isascii(*cp) || !isspace((unsigned char) *cp)));
- if (isascii(*cp) && isspace((unsigned char) *cp))
- ++cp;
- *dp = '\0';
- }
- array[nsubs] = NULL;
- return array;
-}
-
-static long
-oadd(t1, t2)
-const long t1;
-const long t2;
-{
- register long t;
-
- t = t1 + t2;
- if ((t2 > 0 && t <= t1) || (t2 < 0 && t >= t1)) {
- error(_("time overflow"));
- (void) exit(EXIT_FAILURE);
- }
- return t;
-}
-
-static time_t
-tadd(t1, t2)
-const time_t t1;
-const long t2;
-{
- register time_t t;
-
- if (t1 == max_time && t2 > 0)
- return max_time;
- if (t1 == min_time && t2 < 0)
- return min_time;
- t = t1 + t2;
- if ((t2 > 0 && t <= t1) || (t2 < 0 && t >= t1)) {
- error(_("time overflow"));
- (void) exit(EXIT_FAILURE);
- }
- return t;
-}
-
-/*
-** Given a rule, and a year, compute the date - in seconds since January 1,
-** 1970, 00:00 LOCAL time - in that year that the rule refers to.
-*/
-
-static time_t
-rpytime(rp, wantedy)
-register const struct rule * const rp;
-register const int wantedy;
-{
- register int y, m, i;
- register long dayoff; /* with a nod to Margaret O. */
- register time_t t;
-
- if (wantedy == INT_MIN)
- return min_time;
- if (wantedy == INT_MAX)
- return max_time;
- dayoff = 0;
- m = TM_JANUARY;
- y = EPOCH_YEAR;
- while (wantedy != y) {
- if (wantedy > y) {
- i = len_years[isleap(y)];
- ++y;
- } else {
- --y;
- i = -len_years[isleap(y)];
- }
- dayoff = oadd(dayoff, eitol(i));
- }
- while (m != rp->r_month) {
- i = len_months[isleap(y)][m];
- dayoff = oadd(dayoff, eitol(i));
- ++m;
- }
- i = rp->r_dayofmonth;
- if (m == TM_FEBRUARY && i == 29 && !isleap(y)) {
- if (rp->r_dycode == DC_DOWLEQ)
- --i;
- else {
- error(_("use of 2/29 in non leap-year"));
- (void) exit(EXIT_FAILURE);
- }
- }
- --i;
- dayoff = oadd(dayoff, eitol(i));
- if (rp->r_dycode == DC_DOWGEQ || rp->r_dycode == DC_DOWLEQ) {
- register long wday;
-
-#define LDAYSPERWEEK ((long) DAYSPERWEEK)
- wday = eitol(EPOCH_WDAY);
- /*
- ** Don't trust mod of negative numbers.
- */
- if (dayoff >= 0)
- wday = (wday + dayoff) % LDAYSPERWEEK;
- else {
- wday -= ((-dayoff) % LDAYSPERWEEK);
- if (wday < 0)
- wday += LDAYSPERWEEK;
- }
- while (wday != eitol(rp->r_wday))
- if (rp->r_dycode == DC_DOWGEQ) {
- dayoff = oadd(dayoff, (long) 1);
- if (++wday >= LDAYSPERWEEK)
- wday = 0;
- ++i;
- } else {
- dayoff = oadd(dayoff, (long) -1);
- if (--wday < 0)
- wday = LDAYSPERWEEK - 1;
- --i;
- }
- if (i < 0 || i >= len_months[isleap(y)][m]) {
- error(_("no day in month matches rule"));
- (void) exit(EXIT_FAILURE);
- }
- }
- if (dayoff < 0 && !TYPE_SIGNED(time_t))
- return min_time;
- if (dayoff < min_time / SECSPERDAY)
- return min_time;
- if (dayoff > max_time / SECSPERDAY)
- return max_time;
- t = (time_t) dayoff * SECSPERDAY;
- return tadd(t, rp->r_tod);
-}
-
-static void
-newabbr(string)
-const char * const string;
-{
- register int i;
-
- i = strlen(string) + 1;
- if (charcnt + i > TZ_MAX_CHARS) {
- error(_("too many, or too long, time zone abbreviations"));
- (void) exit(EXIT_FAILURE);
- }
- (void) strcpy(&chars[charcnt], string);
- charcnt += eitol(i);
-}
-
-static int
-mkdirs(argname)
-char * const argname;
-{
- register char * name;
- register char * cp;
-
- if (argname == NULL || *argname == '\0')
- return 0;
- cp = name = ecpyalloc(argname);
- while ((cp = strchr(cp + 1, '/')) != 0) {
- *cp = '\0';
-#ifndef unix
- /*
- ** DOS drive specifier?
- */
- if (isalpha((unsigned char) name[0]) &&
- name[1] == ':' && name[2] == '\0') {
- *cp = '/';
- continue;
- }
-#endif /* !defined unix */
- if (!itsdir(name)) {
- /*
- ** It doesn't seem to exist, so we try to create it.
- ** Creation may fail because of the directory being
- ** created by some other multiprocessor, so we get
- ** to do extra checking.
- */
- if (mkdir(name, MKDIR_UMASK) != 0) {
- const char *e = strerror(errno);
-
- if (errno != EEXIST || !itsdir(name)) {
- (void) fprintf(stderr,
-_("%s: Can't create directory %s: %s\n"),
- progname, name, e);
- ifree(name);
- return -1;
- }
- }
- }
- *cp = '/';
- }
- ifree(name);
- return 0;
-}
-
-static long
-eitol(i)
-const int i;
-{
- long l;
-
- l = i;
- if ((i < 0 && l >= 0) || (i == 0 && l != 0) || (i > 0 && l <= 0)) {
- (void) fprintf(stderr,
- _("%s: %d did not sign extend correctly\n"),
- progname, i);
- (void) exit(EXIT_FAILURE);
- }
- return l;
-}
-
-/*
-** UNIX was a registered trademark of The Open Group in 2003.
-*/
-
-
-#ifdef WIN32
-/*
- * To run on win32
- */
-int link(const char *oldpath, const char *newpath) {
- if (!CopyFileEx(oldpath, newpath, NULL, NULL, FALSE, 0)) {
- return -1;
- }
- return 0;
-}
-#endif
+static char elsieid[] = "@(#)zic.c 7.115"; +#include "pgtz.h" +#undef unlink +#undef TZDIR +#define TZDIR "data" +#ifdef WIN32 +#include <windows.h> +#endif + +#include "private.h" +#include "locale.h" +#include "tzfile.h" + +#if HAVE_SYS_STAT_H +#include "sys/stat.h" +#endif +#ifndef WIN32 +#ifdef S_IRUSR +#define MKDIR_UMASK (S_IRUSR|S_IWUSR|S_IXUSR|S_IRGRP|S_IXGRP|S_IROTH|S_IXOTH) +#else +#define MKDIR_UMASK 0755 +#endif +#endif + +/* +** On some ancient hosts, predicates like `isspace(C)' are defined +** only if isascii(C) || C == EOF. Modern hosts obey the C Standard, +** which says they are defined only if C == ((unsigned char) C) || C == EOF. +** Neither the C Standard nor Posix require that `isascii' exist. +** For portability, we check both ancient and modern requirements. +** If isascii is not defined, the isascii check succeeds trivially. +*/ +#include "ctype.h" +#ifndef isascii +#define isascii(x) 1 +#endif + +struct rule { + const char * r_filename; + int r_linenum; + const char * r_name; + + int r_loyear; /* for example, 1986 */ + int r_hiyear; /* for example, 1986 */ + const char * r_yrtype; + + int r_month; /* 0..11 */ + + int r_dycode; /* see below */ + int r_dayofmonth; + int r_wday; + + long r_tod; /* time from midnight */ + int r_todisstd; /* above is standard time if TRUE */ + /* or wall clock time if FALSE */ + int r_todisgmt; /* above is GMT if TRUE */ + /* or local time if FALSE */ + long r_stdoff; /* offset from standard time */ + const char * r_abbrvar; /* variable part of abbreviation */ + + int r_todo; /* a rule to do (used in outzone) */ + time_t r_temp; /* used in outzone */ +}; + +/* +** r_dycode r_dayofmonth r_wday +*/ + +#define DC_DOM 0 /* 1..31 */ /* unused */ +#define DC_DOWGEQ 1 /* 1..31 */ /* 0..6 (Sun..Sat) */ +#define DC_DOWLEQ 2 /* 1..31 */ /* 0..6 (Sun..Sat) */ + +struct zone { + const char * z_filename; + int z_linenum; + + const char * z_name; + long z_gmtoff; + const char * z_rule; + const char * z_format; + + long z_stdoff; + + struct rule * z_rules; + int z_nrules; + + struct rule z_untilrule; + time_t z_untiltime; +}; + +extern int getopt P((int argc, char * const argv[], + const char * options)); +extern int link P((const char * fromname, const char * toname)); +extern char * optarg; +extern int optind; + +static void addtt P((time_t starttime, int type)); +static int addtype P((long gmtoff, const char * abbr, int isdst, + int ttisstd, int ttisgmt)); +static void leapadd P((time_t t, int positive, int rolling, int count)); +static void adjleap P((void)); +static void associate P((void)); +static int ciequal P((const char * ap, const char * bp)); +static void convert P((long val, char * buf)); +static void dolink P((const char * fromfile, const char * tofile)); +static void doabbr P((char * abbr, const char * format, + const char * letters, int isdst)); +static void eat P((const char * name, int num)); +static void eats P((const char * name, int num, + const char * rname, int rnum)); +static long eitol P((int i)); +static void error P((const char * message)); +static char ** getfields P((char * buf)); +static long gethms P((const char * string, const char * errstrng, + int signable)); +static void infile P((const char * filename)); +static void inleap P((char ** fields, int nfields)); +static void inlink P((char ** fields, int nfields)); +static void inrule P((char ** fields, int nfields)); +static int inzcont P((char ** fields, int nfields)); +static int inzone P((char ** fields, int nfields)); +static int inzsub P((char ** fields, int nfields, int iscont)); +static int itsabbr P((const char * abbr, const char * word)); +static int itsdir P((const char * name)); +static int lowerit P((int c)); +static char * memcheck P((char * tocheck)); +static int mkdirs P((char * filename)); +static void newabbr P((const char * abbr)); +static long oadd P((long t1, long t2)); +static void outzone P((const struct zone * zp, int ntzones)); +static void puttzcode P((long code, FILE * fp)); +static int rcomp P((const void * leftp, const void * rightp)); +static time_t rpytime P((const struct rule * rp, int wantedy)); +static void rulesub P((struct rule * rp, + const char * loyearp, const char * hiyearp, + const char * typep, const char * monthp, + const char * dayp, const char * timep)); +static void setboundaries P((void)); +static time_t tadd P((time_t t1, long t2)); +static void usage P((void)); +static void writezone P((const char * name)); +static int yearistype P((int year, const char * type)); + +#if !(HAVE_STRERROR - 0) +static char * strerror P((int)); +#endif /* !(HAVE_STRERROR - 0) */ + +static int charcnt; +static int errors; +static const char * filename; +static int leapcnt; +static int linenum; +static time_t max_time; +static int max_year; +static int max_year_representable; +static time_t min_time; +static int min_year; +static int min_year_representable; +static int noise; +static const char * rfilename; +static int rlinenum; +static const char * progname; +static int timecnt; +static int typecnt; + +/* +** Line codes. +*/ + +#define LC_RULE 0 +#define LC_ZONE 1 +#define LC_LINK 2 +#define LC_LEAP 3 + +/* +** Which fields are which on a Zone line. +*/ + +#define ZF_NAME 1 +#define ZF_GMTOFF 2 +#define ZF_RULE 3 +#define ZF_FORMAT 4 +#define ZF_TILYEAR 5 +#define ZF_TILMONTH 6 +#define ZF_TILDAY 7 +#define ZF_TILTIME 8 +#define ZONE_MINFIELDS 5 +#define ZONE_MAXFIELDS 9 + +/* +** Which fields are which on a Zone continuation line. +*/ + +#define ZFC_GMTOFF 0 +#define ZFC_RULE 1 +#define ZFC_FORMAT 2 +#define ZFC_TILYEAR 3 +#define ZFC_TILMONTH 4 +#define ZFC_TILDAY 5 +#define ZFC_TILTIME 6 +#define ZONEC_MINFIELDS 3 +#define ZONEC_MAXFIELDS 7 + +/* +** Which files are which on a Rule line. +*/ + +#define RF_NAME 1 +#define RF_LOYEAR 2 +#define RF_HIYEAR 3 +#define RF_COMMAND 4 +#define RF_MONTH 5 +#define RF_DAY 6 +#define RF_TOD 7 +#define RF_STDOFF 8 +#define RF_ABBRVAR 9 +#define RULE_FIELDS 10 + +/* +** Which fields are which on a Link line. +*/ + +#define LF_FROM 1 +#define LF_TO 2 +#define LINK_FIELDS 3 + +/* +** Which fields are which on a Leap line. +*/ + +#define LP_YEAR 1 +#define LP_MONTH 2 +#define LP_DAY 3 +#define LP_TIME 4 +#define LP_CORR 5 +#define LP_ROLL 6 +#define LEAP_FIELDS 7 + +/* +** Year synonyms. +*/ + +#define YR_MINIMUM 0 +#define YR_MAXIMUM 1 +#define YR_ONLY 2 + +static struct rule * rules; +static int nrules; /* number of rules */ + +static struct zone * zones; +static int nzones; /* number of zones */ + +struct link { + const char * l_filename; + int l_linenum; + const char * l_from; + const char * l_to; +}; + +static struct link * links; +static int nlinks; + +struct lookup { + const char * l_word; + const int l_value; +}; + +static struct lookup const * byword P((const char * string, + const struct lookup * lp)); + +static struct lookup const line_codes[] = { + { "Rule", LC_RULE }, + { "Zone", LC_ZONE }, + { "Link", LC_LINK }, + { "Leap", LC_LEAP }, + { NULL, 0} +}; + +static struct lookup const mon_names[] = { + { "January", TM_JANUARY }, + { "February", TM_FEBRUARY }, + { "March", TM_MARCH }, + { "April", TM_APRIL }, + { "May", TM_MAY }, + { "June", TM_JUNE }, + { "July", TM_JULY }, + { "August", TM_AUGUST }, + { "September", TM_SEPTEMBER }, + { "October", TM_OCTOBER }, + { "November", TM_NOVEMBER }, + { "December", TM_DECEMBER }, + { NULL, 0 } +}; + +static struct lookup const wday_names[] = { + { "Sunday", TM_SUNDAY }, + { "Monday", TM_MONDAY }, + { "Tuesday", TM_TUESDAY }, + { "Wednesday", TM_WEDNESDAY }, + { "Thursday", TM_THURSDAY }, + { "Friday", TM_FRIDAY }, + { "Saturday", TM_SATURDAY }, + { NULL, 0 } +}; + +static struct lookup const lasts[] = { + { "last-Sunday", TM_SUNDAY }, + { "last-Monday", TM_MONDAY }, + { "last-Tuesday", TM_TUESDAY }, + { "last-Wednesday", TM_WEDNESDAY }, + { "last-Thursday", TM_THURSDAY }, + { "last-Friday", TM_FRIDAY }, + { "last-Saturday", TM_SATURDAY }, + { NULL, 0 } +}; + +static struct lookup const begin_years[] = { + { "minimum", YR_MINIMUM }, + { "maximum", YR_MAXIMUM }, + { NULL, 0 } +}; + +static struct lookup const end_years[] = { + { "minimum", YR_MINIMUM }, + { "maximum", YR_MAXIMUM }, + { "only", YR_ONLY }, + { NULL, 0 } +}; + +static struct lookup const leap_types[] = { + { "Rolling", TRUE }, + { "Stationary", FALSE }, + { NULL, 0 } +}; + +static const int len_months[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 len_years[2] = { + DAYSPERNYEAR, DAYSPERLYEAR +}; + +static struct attype { + time_t at; + unsigned char type; +} attypes[TZ_MAX_TIMES]; +static long gmtoffs[TZ_MAX_TYPES]; +static char isdsts[TZ_MAX_TYPES]; +static unsigned char abbrinds[TZ_MAX_TYPES]; +static char ttisstds[TZ_MAX_TYPES]; +static char ttisgmts[TZ_MAX_TYPES]; +static char chars[TZ_MAX_CHARS]; +static time_t trans[TZ_MAX_LEAPS]; +static long corr[TZ_MAX_LEAPS]; +static char roll[TZ_MAX_LEAPS]; + +/* +** Memory allocation. +*/ + +static char * +memcheck(ptr) +char * const ptr; +{ + if (ptr == NULL) { + const char *e = strerror(errno); + + (void) fprintf(stderr, _("%s: Memory exhausted: %s\n"), + progname, e); + (void) exit(EXIT_FAILURE); + } + return ptr; +} + +#define emalloc(size) memcheck(imalloc(size)) +#define erealloc(ptr, size) memcheck(irealloc((ptr), (size))) +#define ecpyalloc(ptr) memcheck(icpyalloc(ptr)) +#define ecatalloc(oldp, newp) memcheck(icatalloc((oldp), (newp))) + +/* +** Error handling. +*/ + +#if !(HAVE_STRERROR - 0) +static char * +strerror(errnum) +int errnum; +{ + extern char * sys_errlist[]; + extern int sys_nerr; + + return (errnum > 0 && errnum <= sys_nerr) ? + sys_errlist[errnum] : _("Unknown system error"); +} +#endif /* !(HAVE_STRERROR - 0) */ + +static void +eats(name, num, rname, rnum) +const char * const name; +const int num; +const char * const rname; +const int rnum; +{ + filename = name; + linenum = num; + rfilename = rname; + rlinenum = rnum; +} + +static void +eat(name, num) +const char * const name; +const int num; +{ + eats(name, num, (char *) NULL, -1); +} + +static void +error(string) +const char * const string; +{ + /* + ** Match the format of "cc" to allow sh users to + ** zic ... 2>&1 | error -t "*" -v + ** on BSD systems. + */ + (void) fprintf(stderr, _("\"%s\", line %d: %s"), + filename, linenum, string); + if (rfilename != NULL) + (void) fprintf(stderr, _(" (rule from \"%s\", line %d)"), + rfilename, rlinenum); + (void) fprintf(stderr, "\n"); + ++errors; +} + +static void +warning(string) +const char * const string; +{ + char * cp; + + cp = ecpyalloc(_("warning: ")); + cp = ecatalloc(cp, string); + error(cp); + ifree(cp); + --errors; +} + +static void +usage P((void)) +{ + (void) fprintf(stderr, _("%s: usage is %s [ --version ] [ -s ] [ -v ] [ -l localtime ] [ -p posixrules ] \\\n\t[ -d directory ] [ -L leapseconds ] [ -y yearistype ] [ filename ... ]\n"), + progname, progname); + (void) exit(EXIT_FAILURE); +} + +static const char * psxrules; +static const char * lcltime; +static const char * directory; +static const char * leapsec; +static const char * yitcommand; +static int sflag = FALSE; + +int +main(argc, argv) +int argc; +char * argv[]; +{ + register int i; + register int j; + register int c; + +#ifdef unix + (void) umask(umask(S_IWGRP | S_IWOTH) | (S_IWGRP | S_IWOTH)); +#endif /* defined unix */ +#if HAVE_GETTEXT - 0 + (void) setlocale(LC_MESSAGES, ""); +#ifdef TZ_DOMAINDIR + (void) bindtextdomain(TZ_DOMAIN, TZ_DOMAINDIR); +#endif /* defined TEXTDOMAINDIR */ + (void) textdomain(TZ_DOMAIN); +#endif /* HAVE_GETTEXT - 0 */ + progname = argv[0]; + for (i = 1; i < argc; ++i) + if (strcmp(argv[i], "--version") == 0) { + (void) printf("%s\n", elsieid); + (void) exit(EXIT_SUCCESS); + } + while ((c = getopt(argc, argv, "d:l:p:L:vsy:")) != EOF && c != -1) + switch (c) { + default: + usage(); + case 'd': + if (directory == NULL) + directory = optarg; + else { + (void) fprintf(stderr, +_("%s: More than one -d option specified\n"), + progname); + (void) exit(EXIT_FAILURE); + } + break; + case 'l': + if (lcltime == NULL) + lcltime = optarg; + else { + (void) fprintf(stderr, +_("%s: More than one -l option specified\n"), + progname); + (void) exit(EXIT_FAILURE); + } + break; + case 'p': + if (psxrules == NULL) + psxrules = optarg; + else { + (void) fprintf(stderr, +_("%s: More than one -p option specified\n"), + progname); + (void) exit(EXIT_FAILURE); + } + break; + case 'y': + if (yitcommand == NULL) + yitcommand = optarg; + else { + (void) fprintf(stderr, +_("%s: More than one -y option specified\n"), + progname); + (void) exit(EXIT_FAILURE); + } + break; + case 'L': + if (leapsec == NULL) + leapsec = optarg; + else { + (void) fprintf(stderr, +_("%s: More than one -L option specified\n"), + progname); + (void) exit(EXIT_FAILURE); + } + break; + case 'v': + noise = TRUE; + break; + case 's': + sflag = TRUE; + break; + } + if (optind == argc - 1 && strcmp(argv[optind], "=") == 0) + usage(); /* usage message by request */ + if (directory == NULL) + directory = TZDIR; + if (yitcommand == NULL) + yitcommand = "yearistype"; + + setboundaries(); + + if (optind < argc && leapsec != NULL) { + infile(leapsec); + adjleap(); + } + + for (i = optind; i < argc; ++i) + infile(argv[i]); + if (errors) + (void) exit(EXIT_FAILURE); + associate(); + for (i = 0; i < nzones; i = j) { + /* + ** Find the next non-continuation zone entry. + */ + for (j = i + 1; j < nzones && zones[j].z_name == NULL; ++j) + continue; + outzone(&zones[i], j - i); + } + /* + ** Make links. + */ + for (i = 0; i < nlinks; ++i) { + eat(links[i].l_filename, links[i].l_linenum); + dolink(links[i].l_from, links[i].l_to); + } + if (lcltime != NULL) { + eat("command line", 1); + dolink(lcltime, TZDEFAULT); + } + if (psxrules != NULL) { + eat("command line", 1); + dolink(psxrules, TZDEFRULES); + } + return (errors == 0) ? EXIT_SUCCESS : EXIT_FAILURE; +} + +static void +dolink(fromfile, tofile) +const char * const fromfile; +const char * const tofile; +{ + register char * fromname; + register char * toname; + + if (fromfile[0] == '/') + fromname = ecpyalloc(fromfile); + else { + fromname = ecpyalloc(directory); + fromname = ecatalloc(fromname, "/"); + fromname = ecatalloc(fromname, fromfile); + } + if (tofile[0] == '/') + toname = ecpyalloc(tofile); + else { + toname = ecpyalloc(directory); + toname = ecatalloc(toname, "/"); + toname = ecatalloc(toname, tofile); + } + /* + ** We get to be careful here since + ** there's a fair chance of root running us. + */ + if (!itsdir(toname)) + (void) remove(toname); + if (link(fromname, toname) != 0) { + int result; + + if (mkdirs(toname) != 0) + (void) exit(EXIT_FAILURE); + + result = link(fromname, toname); +#if (HAVE_SYMLINK - 0) + if (result != 0 && + access(fromname, F_OK) == 0 && + !itsdir(fromname)) { + const char *s = tofile; + register char * symlinkcontents = NULL; + while ((s = strchr(s+1, '/')) != NULL) + symlinkcontents = ecatalloc(symlinkcontents, "../"); + symlinkcontents = ecatalloc(symlinkcontents, fromfile); + + result = symlink(symlinkcontents, toname); + if (result == 0) +warning(_("hard link failed, symbolic link used")); + ifree(symlinkcontents); + } +#endif + if (result != 0) { + const char *e = strerror(errno); + + (void) fprintf(stderr, + _("%s: Can't link from %s to %s: %s\n"), + progname, fromname, toname, e); + (void) exit(EXIT_FAILURE); + } + } + ifree(fromname); + ifree(toname); +} + +#ifndef INT_MAX +#define INT_MAX ((int) (((unsigned)~0)>>1)) +#endif /* !defined INT_MAX */ + +#ifndef INT_MIN +#define INT_MIN ((int) ~(((unsigned)~0)>>1)) +#endif /* !defined INT_MIN */ + +/* +** The tz file format currently allows at most 32-bit quantities. +** This restriction should be removed before signed 32-bit values +** wrap around in 2038, but unfortunately this will require a +** change to the tz file format. +*/ + +#define MAX_BITS_IN_FILE 32 +#define TIME_T_BITS_IN_FILE ((TYPE_BIT(time_t) < MAX_BITS_IN_FILE) ? TYPE_BIT(time_t) : MAX_BITS_IN_FILE) + +static void +setboundaries P((void)) +{ + if (TYPE_SIGNED(time_t)) { + min_time = ~ (time_t) 0; + min_time <<= TIME_T_BITS_IN_FILE - 1; + max_time = ~ (time_t) 0 - min_time; + if (sflag) + min_time = 0; + } else { + min_time = 0; + max_time = 2 - sflag; + max_time <<= TIME_T_BITS_IN_FILE - 1; + --max_time; + } + min_year = TM_YEAR_BASE + gmtime(&min_time)->tm_year; + max_year = TM_YEAR_BASE + gmtime(&max_time)->tm_year; + min_year_representable = min_year; + max_year_representable = max_year; +} + +static int +itsdir(name) +const char * const name; +{ + register char * myname; + register int accres; + + myname = ecpyalloc(name); + myname = ecatalloc(myname, "/."); + accres = access(myname, F_OK); + ifree(myname); + return accres == 0; +} + +/* +** Associate sets of rules with zones. +*/ + +/* +** Sort by rule name. +*/ + +static int +rcomp(cp1, cp2) +const void * cp1; +const void * cp2; +{ + return strcmp(((const struct rule *) cp1)->r_name, + ((const struct rule *) cp2)->r_name); +} + +static void +associate P((void)) +{ + register struct zone * zp; + register struct rule * rp; + register int base, out; + register int i, j; + + if (nrules != 0) { + (void) qsort((void *) rules, (size_t) nrules, + (size_t) sizeof *rules, rcomp); + for (i = 0; i < nrules - 1; ++i) { + if (strcmp(rules[i].r_name, + rules[i + 1].r_name) != 0) + continue; + if (strcmp(rules[i].r_filename, + rules[i + 1].r_filename) == 0) + continue; + eat(rules[i].r_filename, rules[i].r_linenum); + warning(_("same rule name in multiple files")); + eat(rules[i + 1].r_filename, rules[i + 1].r_linenum); + warning(_("same rule name in multiple files")); + for (j = i + 2; j < nrules; ++j) { + if (strcmp(rules[i].r_name, + rules[j].r_name) != 0) + break; + if (strcmp(rules[i].r_filename, + rules[j].r_filename) == 0) + continue; + if (strcmp(rules[i + 1].r_filename, + rules[j].r_filename) == 0) + continue; + break; + } + i = j - 1; + } + } + for (i = 0; i < nzones; ++i) { + zp = &zones[i]; + zp->z_rules = NULL; + zp->z_nrules = 0; + } + for (base = 0; base < nrules; base = out) { + rp = &rules[base]; + for (out = base + 1; out < nrules; ++out) + if (strcmp(rp->r_name, rules[out].r_name) != 0) + break; + for (i = 0; i < nzones; ++i) { + zp = &zones[i]; + if (strcmp(zp->z_rule, rp->r_name) != 0) + continue; + zp->z_rules = rp; + zp->z_nrules = out - base; + } + } + for (i = 0; i < nzones; ++i) { + zp = &zones[i]; + if (zp->z_nrules == 0) { + /* + ** Maybe we have a local standard time offset. + */ + eat(zp->z_filename, zp->z_linenum); + zp->z_stdoff = gethms(zp->z_rule, _("unruly zone"), + TRUE); + /* + ** Note, though, that if there's no rule, + ** a '%s' in the format is a bad thing. + */ + if (strchr(zp->z_format, '%') != 0) + error(_("%s in ruleless zone")); + } + } + if (errors) + (void) exit(EXIT_FAILURE); +} + +static void +infile(name) +const char * name; +{ + register FILE * fp; + register char ** fields; + register char * cp; + register const struct lookup * lp; + register int nfields; + register int wantcont; + register int num; + char buf[BUFSIZ]; + + if (strcmp(name, "-") == 0) { + name = _("standard input"); + fp = stdin; + } else if ((fp = fopen(name, "r")) == NULL) { + const char *e = strerror(errno); + + (void) fprintf(stderr, _("%s: Can't open %s: %s\n"), + progname, name, e); + (void) exit(EXIT_FAILURE); + } + wantcont = FALSE; + for (num = 1; ; ++num) { + eat(name, num); + if (fgets(buf, (int) sizeof buf, fp) != buf) + break; + cp = strchr(buf, '\n'); + if (cp == NULL) { + error(_("line too long")); + (void) exit(EXIT_FAILURE); + } + *cp = '\0'; + fields = getfields(buf); + nfields = 0; + while (fields[nfields] != NULL) { + static char nada; + + if (strcmp(fields[nfields], "-") == 0) + fields[nfields] = &nada; + ++nfields; + } + if (nfields == 0) { + /* nothing to do */ + } else if (wantcont) { + wantcont = inzcont(fields, nfields); + } else { + lp = byword(fields[0], line_codes); + if (lp == NULL) + error(_("input line of unknown type")); + else switch ((int) (lp->l_value)) { + case LC_RULE: + inrule(fields, nfields); + wantcont = FALSE; + break; + case LC_ZONE: + wantcont = inzone(fields, nfields); + break; + case LC_LINK: + inlink(fields, nfields); + wantcont = FALSE; + break; + case LC_LEAP: + if (name != leapsec) + (void) fprintf(stderr, +_("%s: Leap line in non leap seconds file %s\n"), + progname, name); + else inleap(fields, nfields); + wantcont = FALSE; + break; + default: /* "cannot happen" */ + (void) fprintf(stderr, +_("%s: panic: Invalid l_value %d\n"), + progname, lp->l_value); + (void) exit(EXIT_FAILURE); + } + } + ifree((char *) fields); + } + if (ferror(fp)) { + (void) fprintf(stderr, _("%s: Error reading %s\n"), + progname, filename); + (void) exit(EXIT_FAILURE); + } + if (fp != stdin && fclose(fp)) { + const char *e = strerror(errno); + + (void) fprintf(stderr, _("%s: Error closing %s: %s\n"), + progname, filename, e); + (void) exit(EXIT_FAILURE); + } + if (wantcont) + error(_("expected continuation line not found")); +} + +/* +** Convert a string of one of the forms +** h -h hh:mm -hh:mm hh:mm:ss -hh:mm:ss +** into a number of seconds. +** A null string maps to zero. +** Call error with errstring and return zero on errors. +*/ + +static long +gethms(string, errstring, signable) +const char * string; +const char * const errstring; +const int signable; +{ + int hh, mm, ss, sign; + + if (string == NULL || *string == '\0') + return 0; + if (!signable) + sign = 1; + else if (*string == '-') { + sign = -1; + ++string; + } else sign = 1; + if (sscanf(string, scheck(string, "%d"), &hh) == 1) + mm = ss = 0; + else if (sscanf(string, scheck(string, "%d:%d"), &hh, &mm) == 2) + ss = 0; + else if (sscanf(string, scheck(string, "%d:%d:%d"), + &hh, &mm, &ss) != 3) { + error(errstring); + return 0; + } + if ((hh < 0 || hh >= HOURSPERDAY || + mm < 0 || mm >= MINSPERHOUR || + ss < 0 || ss > SECSPERMIN) && + !(hh == HOURSPERDAY && mm == 0 && ss == 0)) { + error(errstring); + return 0; + } + if (noise && hh == HOURSPERDAY) + warning(_("24:00 not handled by pre-1998 versions of zic")); + return eitol(sign) * + (eitol(hh * MINSPERHOUR + mm) * + eitol(SECSPERMIN) + eitol(ss)); +} + +static void +inrule(fields, nfields) +register char ** const fields; +const int nfields; +{ + static struct rule r; + + if (nfields != RULE_FIELDS) { + error(_("wrong number of fields on Rule line")); + return; + } + if (*fields[RF_NAME] == '\0') { + error(_("nameless rule")); + return; + } + r.r_filename = filename; + r.r_linenum = linenum; + r.r_stdoff = gethms(fields[RF_STDOFF], _("invalid saved time"), TRUE); + rulesub(&r, fields[RF_LOYEAR], fields[RF_HIYEAR], fields[RF_COMMAND], + fields[RF_MONTH], fields[RF_DAY], fields[RF_TOD]); + r.r_name = ecpyalloc(fields[RF_NAME]); + r.r_abbrvar = ecpyalloc(fields[RF_ABBRVAR]); + rules = (struct rule *) (void *) erealloc((char *) rules, + (int) ((nrules + 1) * sizeof *rules)); + rules[nrules++] = r; +} + +static int +inzone(fields, nfields) +register char ** const fields; +const int nfields; +{ + register int i; + static char * buf; + + if (nfields < ZONE_MINFIELDS || nfields > ZONE_MAXFIELDS) { + error(_("wrong number of fields on Zone line")); + return FALSE; + } + if (strcmp(fields[ZF_NAME], TZDEFAULT) == 0 && lcltime != NULL) { + buf = erealloc(buf, (int) (132 + strlen(TZDEFAULT))); + (void) sprintf(buf, +_("\"Zone %s\" line and -l option are mutually exclusive"), + TZDEFAULT); + error(buf); + return FALSE; + } + if (strcmp(fields[ZF_NAME], TZDEFRULES) == 0 && psxrules != NULL) { + buf = erealloc(buf, (int) (132 + strlen(TZDEFRULES))); + (void) sprintf(buf, +_("\"Zone %s\" line and -p option are mutually exclusive"), + TZDEFRULES); + error(buf); + return FALSE; + } + for (i = 0; i < nzones; ++i) + if (zones[i].z_name != NULL && + strcmp(zones[i].z_name, fields[ZF_NAME]) == 0) { + buf = erealloc(buf, (int) (132 + + strlen(fields[ZF_NAME]) + + strlen(zones[i].z_filename))); + (void) sprintf(buf, +_("duplicate zone name %s (file \"%s\", line %d)"), + fields[ZF_NAME], + zones[i].z_filename, + zones[i].z_linenum); + error(buf); + return FALSE; + } + return inzsub(fields, nfields, FALSE); +} + +static int +inzcont(fields, nfields) +register char ** const fields; +const int nfields; +{ + if (nfields < ZONEC_MINFIELDS || nfields > ZONEC_MAXFIELDS) { + error(_("wrong number of fields on Zone continuation line")); + return FALSE; + } + return inzsub(fields, nfields, TRUE); +} + +static int +inzsub(fields, nfields, iscont) +register char ** const fields; +const int nfields; +const int iscont; +{ + register char * cp; + static struct zone z; + register int i_gmtoff, i_rule, i_format; + register int i_untilyear, i_untilmonth; + register int i_untilday, i_untiltime; + register int hasuntil; + + if (iscont) { + i_gmtoff = ZFC_GMTOFF; + i_rule = ZFC_RULE; + i_format = ZFC_FORMAT; + i_untilyear = ZFC_TILYEAR; + i_untilmonth = ZFC_TILMONTH; + i_untilday = ZFC_TILDAY; + i_untiltime = ZFC_TILTIME; + z.z_name = NULL; + } else { + i_gmtoff = ZF_GMTOFF; + i_rule = ZF_RULE; + i_format = ZF_FORMAT; + i_untilyear = ZF_TILYEAR; + i_untilmonth = ZF_TILMONTH; + i_untilday = ZF_TILDAY; + i_untiltime = ZF_TILTIME; + z.z_name = ecpyalloc(fields[ZF_NAME]); + } + z.z_filename = filename; + z.z_linenum = linenum; + z.z_gmtoff = gethms(fields[i_gmtoff], _("invalid UTC offset"), TRUE); + if ((cp = strchr(fields[i_format], '%')) != 0) { + if (*++cp != 's' || strchr(cp, '%') != 0) { + error(_("invalid abbreviation format")); + return FALSE; + } + } + z.z_rule = ecpyalloc(fields[i_rule]); + z.z_format = ecpyalloc(fields[i_format]); + hasuntil = nfields > i_untilyear; + if (hasuntil) { + z.z_untilrule.r_filename = filename; + z.z_untilrule.r_linenum = linenum; + rulesub(&z.z_untilrule, + fields[i_untilyear], + "only", + "", + (nfields > i_untilmonth) ? + fields[i_untilmonth] : "Jan", + (nfields > i_untilday) ? fields[i_untilday] : "1", + (nfields > i_untiltime) ? fields[i_untiltime] : "0"); + z.z_untiltime = rpytime(&z.z_untilrule, + z.z_untilrule.r_loyear); + if (iscont && nzones > 0 && + z.z_untiltime > min_time && + z.z_untiltime < max_time && + zones[nzones - 1].z_untiltime > min_time && + zones[nzones - 1].z_untiltime < max_time && + zones[nzones - 1].z_untiltime >= z.z_untiltime) { + error(_("Zone continuation line end time is not after end time of previous line")); + return FALSE; + } + } + zones = (struct zone *) (void *) erealloc((char *) zones, + (int) ((nzones + 1) * sizeof *zones)); + zones[nzones++] = z; + /* + ** If there was an UNTIL field on this line, + ** there's more information about the zone on the next line. + */ + return hasuntil; +} + +static void +inleap(fields, nfields) +register char ** const fields; +const int nfields; +{ + register const char * cp; + register const struct lookup * lp; + register int i, j; + int year, month, day; + long dayoff, tod; + time_t t; + + if (nfields != LEAP_FIELDS) { + error(_("wrong number of fields on Leap line")); + return; + } + dayoff = 0; + cp = fields[LP_YEAR]; + if (sscanf(cp, scheck(cp, "%d"), &year) != 1) { + /* + * Leapin' Lizards! + */ + error(_("invalid leaping year")); + return; + } + j = EPOCH_YEAR; + while (j != year) { + if (year > j) { + i = len_years[isleap(j)]; + ++j; + } else { + --j; + i = -len_years[isleap(j)]; + } + dayoff = oadd(dayoff, eitol(i)); + } + if ((lp = byword(fields[LP_MONTH], mon_names)) == NULL) { + error(_("invalid month name")); + return; + } + month = lp->l_value; + j = TM_JANUARY; + while (j != month) { + i = len_months[isleap(year)][j]; + dayoff = oadd(dayoff, eitol(i)); + ++j; + } + cp = fields[LP_DAY]; + if (sscanf(cp, scheck(cp, "%d"), &day) != 1 || + day <= 0 || day > len_months[isleap(year)][month]) { + error(_("invalid day of month")); + return; + } + dayoff = oadd(dayoff, eitol(day - 1)); + if (dayoff < 0 && !TYPE_SIGNED(time_t)) { + error(_("time before zero")); + return; + } + if (dayoff < min_time / SECSPERDAY) { + error(_("time too small")); + return; + } + if (dayoff > max_time / SECSPERDAY) { + error(_("time too large")); + return; + } + t = (time_t) dayoff * SECSPERDAY; + tod = gethms(fields[LP_TIME], _("invalid time of day"), FALSE); + cp = fields[LP_CORR]; + { + register int positive; + int count; + + if (strcmp(cp, "") == 0) { /* infile() turns "-" into "" */ + positive = FALSE; + count = 1; + } else if (strcmp(cp, "--") == 0) { + positive = FALSE; + count = 2; + } else if (strcmp(cp, "+") == 0) { + positive = TRUE; + count = 1; + } else if (strcmp(cp, "++") == 0) { + positive = TRUE; + count = 2; + } else { + error(_("illegal CORRECTION field on Leap line")); + return; + } + if ((lp = byword(fields[LP_ROLL], leap_types)) == NULL) { + error(_("illegal Rolling/Stationary field on Leap line")); + return; + } + leapadd(tadd(t, tod), positive, lp->l_value, count); + } +} + +static void +inlink(fields, nfields) +register char ** const fields; +const int nfields; +{ + struct link l; + + if (nfields != LINK_FIELDS) { + error(_("wrong number of fields on Link line")); + return; + } + if (*fields[LF_FROM] == '\0') { + error(_("blank FROM field on Link line")); + return; + } + if (*fields[LF_TO] == '\0') { + error(_("blank TO field on Link line")); + return; + } + l.l_filename = filename; + l.l_linenum = linenum; + l.l_from = ecpyalloc(fields[LF_FROM]); + l.l_to = ecpyalloc(fields[LF_TO]); + links = (struct link *) (void *) erealloc((char *) links, + (int) ((nlinks + 1) * sizeof *links)); + links[nlinks++] = l; +} + +static void +rulesub(rp, loyearp, hiyearp, typep, monthp, dayp, timep) +register struct rule * const rp; +const char * const loyearp; +const char * const hiyearp; +const char * const typep; +const char * const monthp; +const char * const dayp; +const char * const timep; +{ + register const struct lookup * lp; + register const char * cp; + register char * dp; + register char * ep; + + if ((lp = byword(monthp, mon_names)) == NULL) { + error(_("invalid month name")); + return; + } + rp->r_month = lp->l_value; + rp->r_todisstd = FALSE; + rp->r_todisgmt = FALSE; + dp = ecpyalloc(timep); + if (*dp != '\0') { + ep = dp + strlen(dp) - 1; + switch (lowerit(*ep)) { + case 's': /* Standard */ + rp->r_todisstd = TRUE; + rp->r_todisgmt = FALSE; + *ep = '\0'; + break; + case 'w': /* Wall */ + rp->r_todisstd = FALSE; + rp->r_todisgmt = FALSE; + *ep = '\0'; + break; + case 'g': /* Greenwich */ + case 'u': /* Universal */ + case 'z': /* Zulu */ + rp->r_todisstd = TRUE; + rp->r_todisgmt = TRUE; + *ep = '\0'; + break; + } + } + rp->r_tod = gethms(dp, _("invalid time of day"), FALSE); + ifree(dp); + /* + ** Year work. + */ + cp = loyearp; + lp = byword(cp, begin_years); + if (lp != NULL) switch ((int) lp->l_value) { + case YR_MINIMUM: + rp->r_loyear = INT_MIN; + break; + case YR_MAXIMUM: + rp->r_loyear = INT_MAX; + break; + default: /* "cannot happen" */ + (void) fprintf(stderr, + _("%s: panic: Invalid l_value %d\n"), + progname, lp->l_value); + (void) exit(EXIT_FAILURE); + } else if (sscanf(cp, scheck(cp, "%d"), &rp->r_loyear) != 1) { + error(_("invalid starting year")); + return; + } else if (noise) { + if (rp->r_loyear < min_year_representable) + warning(_("starting year too low to be represented")); + else if (rp->r_loyear > max_year_representable) + warning(_("starting year too high to be represented")); + } + cp = hiyearp; + if ((lp = byword(cp, end_years)) != NULL) switch ((int) lp->l_value) { + case YR_MINIMUM: + rp->r_hiyear = INT_MIN; + break; + case YR_MAXIMUM: + rp->r_hiyear = INT_MAX; + break; + case YR_ONLY: + rp->r_hiyear = rp->r_loyear; + break; + default: /* "cannot happen" */ + (void) fprintf(stderr, + _("%s: panic: Invalid l_value %d\n"), + progname, lp->l_value); + (void) exit(EXIT_FAILURE); + } else if (sscanf(cp, scheck(cp, "%d"), &rp->r_hiyear) != 1) { + error(_("invalid ending year")); + return; + } else if (noise) { + if (rp->r_loyear < min_year_representable) + warning(_("ending year too low to be represented")); + else if (rp->r_loyear > max_year_representable) + warning(_("ending year too high to be represented")); + } + if (rp->r_loyear > rp->r_hiyear) { + error(_("starting year greater than ending year")); + return; + } + if (*typep == '\0') + rp->r_yrtype = NULL; + else { + if (rp->r_loyear == rp->r_hiyear) { + error(_("typed single year")); + return; + } + rp->r_yrtype = ecpyalloc(typep); + } + if (rp->r_loyear < min_year && rp->r_loyear > 0) + min_year = rp->r_loyear; + /* + ** Day work. + ** Accept things such as: + ** 1 + ** last-Sunday + ** Sun<=20 + ** Sun>=7 + */ + dp = ecpyalloc(dayp); + if ((lp = byword(dp, lasts)) != NULL) { + rp->r_dycode = DC_DOWLEQ; + rp->r_wday = lp->l_value; + rp->r_dayofmonth = len_months[1][rp->r_month]; + } else { + if ((ep = strchr(dp, '<')) != 0) + rp->r_dycode = DC_DOWLEQ; + else if ((ep = strchr(dp, '>')) != 0) + rp->r_dycode = DC_DOWGEQ; + else { + ep = dp; + rp->r_dycode = DC_DOM; + } + if (rp->r_dycode != DC_DOM) { + *ep++ = 0; + if (*ep++ != '=') { + error(_("invalid day of month")); + ifree(dp); + return; + } + if ((lp = byword(dp, wday_names)) == NULL) { + error(_("invalid weekday name")); + ifree(dp); + return; + } + rp->r_wday = lp->l_value; + } + if (sscanf(ep, scheck(ep, "%d"), &rp->r_dayofmonth) != 1 || + rp->r_dayofmonth <= 0 || + (rp->r_dayofmonth > len_months[1][rp->r_month])) { + error(_("invalid day of month")); + ifree(dp); + return; + } + } + ifree(dp); +} + +static void +convert(val, buf) +const long val; +char * const buf; +{ + register int i; + register long shift; + + for (i = 0, shift = 24; i < 4; ++i, shift -= 8) + buf[i] = val >> shift; +} + +static void +puttzcode(val, fp) +const long val; +FILE * const fp; +{ + char buf[4]; + + convert(val, buf); + (void) fwrite((void *) buf, (size_t) sizeof buf, (size_t) 1, fp); +} + +static int +atcomp(avp, bvp) +void * avp; +void * bvp; +{ + if (((struct attype *) avp)->at < ((struct attype *) bvp)->at) + return -1; + else if (((struct attype *) avp)->at > ((struct attype *) bvp)->at) + return 1; + else return 0; +} + +static void +writezone(name) +const char * const name; +{ + register FILE * fp; + register int i, j; + static char * fullname; + static struct tzhead tzh; + time_t ats[TZ_MAX_TIMES]; + unsigned char types[TZ_MAX_TIMES]; + + /* + ** Sort. + */ + if (timecnt > 1) + (void) qsort((void *) attypes, (size_t) timecnt, + (size_t) sizeof *attypes, atcomp); + /* + ** Optimize. + */ + { + int fromi; + int toi; + + toi = 0; + fromi = 0; + while (fromi < timecnt && attypes[fromi].at < min_time) + ++fromi; + if (isdsts[0] == 0) + while (fromi < timecnt && attypes[fromi].type == 0) + ++fromi; /* handled by default rule */ + for ( ; fromi < timecnt; ++fromi) { + if (toi != 0 + && ((attypes[fromi].at + + gmtoffs[attypes[toi - 1].type]) + <= (attypes[toi - 1].at + + gmtoffs[toi == 1 ? 0 + : attypes[toi - 2].type]))) { + attypes[toi - 1].type = attypes[fromi].type; + continue; + } + if (toi == 0 || + attypes[toi - 1].type != attypes[fromi].type) + attypes[toi++] = attypes[fromi]; + } + timecnt = toi; + } + /* + ** Transfer. + */ + for (i = 0; i < timecnt; ++i) { + ats[i] = attypes[i].at; + types[i] = attypes[i].type; + } + fullname = erealloc(fullname, + (int) (strlen(directory) + 1 + strlen(name) + 1)); + (void) sprintf(fullname, "%s/%s", directory, name); + /* + ** Remove old file, if any, to snap links. + */ + if (!itsdir(fullname) && remove(fullname) != 0 && errno != ENOENT) { + const char *e = strerror(errno); + + (void) fprintf(stderr, _("%s: Can't remove %s: %s\n"), + progname, fullname, e); + (void) exit(EXIT_FAILURE); + } + if ((fp = fopen(fullname, "wb")) == NULL) { + if (mkdirs(fullname) != 0) + (void) exit(EXIT_FAILURE); + if ((fp = fopen(fullname, "wb")) == NULL) { + const char *e = strerror(errno); + + (void) fprintf(stderr, _("%s: Can't create %s: %s\n"), + progname, fullname, e); + (void) exit(EXIT_FAILURE); + } + } + convert(eitol(typecnt), tzh.tzh_ttisgmtcnt); + convert(eitol(typecnt), tzh.tzh_ttisstdcnt); + convert(eitol(leapcnt), tzh.tzh_leapcnt); + convert(eitol(timecnt), tzh.tzh_timecnt); + convert(eitol(typecnt), tzh.tzh_typecnt); + convert(eitol(charcnt), tzh.tzh_charcnt); + (void) strncpy(tzh.tzh_magic, TZ_MAGIC, sizeof tzh.tzh_magic); +#define DO(field) (void) fwrite((void *) tzh.field, (size_t) sizeof tzh.field, (size_t) 1, fp) + DO(tzh_magic); + DO(tzh_reserved); + DO(tzh_ttisgmtcnt); + DO(tzh_ttisstdcnt); + DO(tzh_leapcnt); + DO(tzh_timecnt); + DO(tzh_typecnt); + DO(tzh_charcnt); +#undef DO + for (i = 0; i < timecnt; ++i) { + j = leapcnt; + while (--j >= 0) + if (ats[i] >= trans[j]) { + ats[i] = tadd(ats[i], corr[j]); + break; + } + puttzcode((long) ats[i], fp); + } + if (timecnt > 0) + (void) fwrite((void *) types, (size_t) sizeof types[0], + (size_t) timecnt, fp); + for (i = 0; i < typecnt; ++i) { + puttzcode((long) gmtoffs[i], fp); + (void) putc(isdsts[i], fp); + (void) putc(abbrinds[i], fp); + } + if (charcnt != 0) + (void) fwrite((void *) chars, (size_t) sizeof chars[0], + (size_t) charcnt, fp); + for (i = 0; i < leapcnt; ++i) { + if (roll[i]) { + if (timecnt == 0 || trans[i] < ats[0]) { + j = 0; + while (isdsts[j]) + if (++j >= typecnt) { + j = 0; + break; + } + } else { + j = 1; + while (j < timecnt && trans[i] >= ats[j]) + ++j; + j = types[j - 1]; + } + puttzcode((long) tadd(trans[i], -gmtoffs[j]), fp); + } else puttzcode((long) trans[i], fp); + puttzcode((long) corr[i], fp); + } + for (i = 0; i < typecnt; ++i) + (void) putc(ttisstds[i], fp); + for (i = 0; i < typecnt; ++i) + (void) putc(ttisgmts[i], fp); + if (ferror(fp) || fclose(fp)) { + (void) fprintf(stderr, _("%s: Error writing %s\n"), + progname, fullname); + (void) exit(EXIT_FAILURE); + } +} + +static void +doabbr(abbr, format, letters, isdst) +char * const abbr; +const char * const format; +const char * const letters; +const int isdst; +{ + if (strchr(format, '/') == NULL) { + if (letters == NULL) + (void) strcpy(abbr, format); + else (void) sprintf(abbr, format, letters); + } else if (isdst) + (void) strcpy(abbr, strchr(format, '/') + 1); + else { + (void) strcpy(abbr, format); + *strchr(abbr, '/') = '\0'; + } +} + +static void +outzone(zpfirst, zonecount) +const struct zone * const zpfirst; +const int zonecount; +{ + register const struct zone * zp; + register struct rule * rp; + register int i, j; + register int usestart, useuntil; + register time_t starttime, untiltime; + register long gmtoff; + register long stdoff; + register int year; + register long startoff; + register int startttisstd; + register int startttisgmt; + register int type; + char startbuf[BUFSIZ]; + + INITIALIZE(untiltime); + INITIALIZE(starttime); + /* + ** Now. . .finally. . .generate some useful data! + */ + timecnt = 0; + typecnt = 0; + charcnt = 0; + /* + ** Thanks to Earl Chew (earl@dnd.icp.nec.com.au) + ** for noting the need to unconditionally initialize startttisstd. + */ + startttisstd = FALSE; + startttisgmt = FALSE; + for (i = 0; i < zonecount; ++i) { + /* + ** A guess that may well be corrected later. + */ + stdoff = 0; + zp = &zpfirst[i]; + usestart = i > 0 && (zp - 1)->z_untiltime > min_time; + useuntil = i < (zonecount - 1); + if (useuntil && zp->z_untiltime <= min_time) + continue; + gmtoff = zp->z_gmtoff; + eat(zp->z_filename, zp->z_linenum); + *startbuf = '\0'; + startoff = zp->z_gmtoff; + if (zp->z_nrules == 0) { + stdoff = zp->z_stdoff; + doabbr(startbuf, zp->z_format, + (char *) NULL, stdoff != 0); + type = addtype(oadd(zp->z_gmtoff, stdoff), + startbuf, stdoff != 0, startttisstd, + startttisgmt); + if (usestart) { + addtt(starttime, type); + usestart = FALSE; + } else if (stdoff != 0) + addtt(min_time, type); + } else for (year = min_year; year <= max_year; ++year) { + if (useuntil && year > zp->z_untilrule.r_hiyear) + break; + /* + ** Mark which rules to do in the current year. + ** For those to do, calculate rpytime(rp, year); + */ + for (j = 0; j < zp->z_nrules; ++j) { + rp = &zp->z_rules[j]; + eats(zp->z_filename, zp->z_linenum, + rp->r_filename, rp->r_linenum); + rp->r_todo = year >= rp->r_loyear && + year <= rp->r_hiyear && + yearistype(year, rp->r_yrtype); + if (rp->r_todo) + rp->r_temp = rpytime(rp, year); + } + for ( ; ; ) { + register int k; + register time_t jtime, ktime; + register long offset; + char buf[BUFSIZ]; + + INITIALIZE(ktime); + if (useuntil) { + /* + ** Turn untiltime into UTC + ** assuming the current gmtoff and + ** stdoff values. + */ + untiltime = zp->z_untiltime; + if (!zp->z_untilrule.r_todisgmt) + untiltime = tadd(untiltime, + -gmtoff); + if (!zp->z_untilrule.r_todisstd) + untiltime = tadd(untiltime, + -stdoff); + } + /* + ** Find the rule (of those to do, if any) + ** that takes effect earliest in the year. + */ + k = -1; + for (j = 0; j < zp->z_nrules; ++j) { + rp = &zp->z_rules[j]; + if (!rp->r_todo) + continue; + eats(zp->z_filename, zp->z_linenum, + rp->r_filename, rp->r_linenum); + offset = rp->r_todisgmt ? 0 : gmtoff; + if (!rp->r_todisstd) + offset = oadd(offset, stdoff); + jtime = rp->r_temp; + if (jtime == min_time || + jtime == max_time) + continue; + jtime = tadd(jtime, -offset); + if (k < 0 || jtime < ktime) { + k = j; + ktime = jtime; + } + } + if (k < 0) + break; /* go on to next year */ + rp = &zp->z_rules[k]; + rp->r_todo = FALSE; + if (useuntil && ktime >= untiltime) + break; + stdoff = rp->r_stdoff; + if (usestart && ktime == starttime) + usestart = FALSE; + if (usestart) { + if (ktime < starttime) { + startoff = oadd(zp->z_gmtoff, + stdoff); + doabbr(startbuf, zp->z_format, + rp->r_abbrvar, + rp->r_stdoff != 0); + continue; + } + if (*startbuf == '\0' && + startoff == oadd(zp->z_gmtoff, + stdoff)) { + doabbr(startbuf, zp->z_format, + rp->r_abbrvar, + rp->r_stdoff != 0); + } + } + eats(zp->z_filename, zp->z_linenum, + rp->r_filename, rp->r_linenum); + doabbr(buf, zp->z_format, rp->r_abbrvar, + rp->r_stdoff != 0); + offset = oadd(zp->z_gmtoff, rp->r_stdoff); + type = addtype(offset, buf, rp->r_stdoff != 0, + rp->r_todisstd, rp->r_todisgmt); + addtt(ktime, type); + } + } + if (usestart) { + if (*startbuf == '\0' && + zp->z_format != NULL && + strchr(zp->z_format, '%') == NULL && + strchr(zp->z_format, '/') == NULL) + (void) strcpy(startbuf, zp->z_format); + eat(zp->z_filename, zp->z_linenum); + if (*startbuf == '\0') +error(_("can't determine time zone abbreviation to use just after until time")); + else addtt(starttime, + addtype(startoff, startbuf, + startoff != zp->z_gmtoff, + startttisstd, + startttisgmt)); + } + /* + ** Now we may get to set starttime for the next zone line. + */ + if (useuntil) { + startttisstd = zp->z_untilrule.r_todisstd; + startttisgmt = zp->z_untilrule.r_todisgmt; + starttime = zp->z_untiltime; + if (!startttisstd) + starttime = tadd(starttime, -stdoff); + if (!startttisgmt) + starttime = tadd(starttime, -gmtoff); + } + } + writezone(zpfirst->z_name); +} + +static void +addtt(starttime, type) +const time_t starttime; +int type; +{ + if (starttime <= min_time || + (timecnt == 1 && attypes[0].at < min_time)) { + gmtoffs[0] = gmtoffs[type]; + isdsts[0] = isdsts[type]; + ttisstds[0] = ttisstds[type]; + ttisgmts[0] = ttisgmts[type]; + if (abbrinds[type] != 0) + (void) strcpy(chars, &chars[abbrinds[type]]); + abbrinds[0] = 0; + charcnt = strlen(chars) + 1; + typecnt = 1; + timecnt = 0; + type = 0; + } + if (timecnt >= TZ_MAX_TIMES) { + error(_("too many transitions?!")); + (void) exit(EXIT_FAILURE); + } + attypes[timecnt].at = starttime; + attypes[timecnt].type = type; + ++timecnt; +} + +static int +addtype(gmtoff, abbr, isdst, ttisstd, ttisgmt) +const long gmtoff; +const char * const abbr; +const int isdst; +const int ttisstd; +const int ttisgmt; +{ + register int i, j; + + if (isdst != TRUE && isdst != FALSE) { + error(_("internal error - addtype called with bad isdst")); + (void) exit(EXIT_FAILURE); + } + if (ttisstd != TRUE && ttisstd != FALSE) { + error(_("internal error - addtype called with bad ttisstd")); + (void) exit(EXIT_FAILURE); + } + if (ttisgmt != TRUE && ttisgmt != FALSE) { + error(_("internal error - addtype called with bad ttisgmt")); + (void) exit(EXIT_FAILURE); + } + /* + ** See if there's already an entry for this zone type. + ** If so, just return its index. + */ + for (i = 0; i < typecnt; ++i) { + if (gmtoff == gmtoffs[i] && isdst == isdsts[i] && + strcmp(abbr, &chars[abbrinds[i]]) == 0 && + ttisstd == ttisstds[i] && + ttisgmt == ttisgmts[i]) + return i; + } + /* + ** There isn't one; add a new one, unless there are already too + ** many. + */ + if (typecnt >= TZ_MAX_TYPES) { + error(_("too many local time types")); + (void) exit(EXIT_FAILURE); + } + gmtoffs[i] = gmtoff; + isdsts[i] = isdst; + ttisstds[i] = ttisstd; + ttisgmts[i] = ttisgmt; + + for (j = 0; j < charcnt; ++j) + if (strcmp(&chars[j], abbr) == 0) + break; + if (j == charcnt) + newabbr(abbr); + abbrinds[i] = j; + ++typecnt; + return i; +} + +static void +leapadd(t, positive, rolling, count) +const time_t t; +const int positive; +const int rolling; +int count; +{ + register int i, j; + + if (leapcnt + (positive ? count : 1) > TZ_MAX_LEAPS) { + error(_("too many leap seconds")); + (void) exit(EXIT_FAILURE); + } + for (i = 0; i < leapcnt; ++i) + if (t <= trans[i]) { + if (t == trans[i]) { + error(_("repeated leap second moment")); + (void) exit(EXIT_FAILURE); + } + break; + } + do { + for (j = leapcnt; j > i; --j) { + trans[j] = trans[j - 1]; + corr[j] = corr[j - 1]; + roll[j] = roll[j - 1]; + } + trans[i] = t; + corr[i] = positive ? 1L : eitol(-count); + roll[i] = rolling; + ++leapcnt; + } while (positive && --count != 0); +} + +static void +adjleap P((void)) +{ + register int i; + register long last = 0; + + /* + ** propagate leap seconds forward + */ + for (i = 0; i < leapcnt; ++i) { + trans[i] = tadd(trans[i], last); + last = corr[i] += last; + } +} + +static int +yearistype(year, type) +const int year; +const char * const type; +{ + static char * buf; + int result; + + if (type == NULL || *type == '\0') + return TRUE; + buf = erealloc(buf, (int) (132 + strlen(yitcommand) + strlen(type))); + (void) sprintf(buf, "%s %d %s", yitcommand, year, type); + result = system(buf); + if (WIFEXITED(result)) switch (WEXITSTATUS(result)) { + case 0: + return TRUE; + case 1: + return FALSE; + } + error(_("Wild result from command execution")); + (void) fprintf(stderr, _("%s: command was '%s', result was %d\n"), + progname, buf, result); + for ( ; ; ) + (void) exit(EXIT_FAILURE); +} + +static int +lowerit(a) +int a; +{ + a = (unsigned char) a; + return (isascii(a) && isupper(a)) ? tolower(a) : a; +} + +static int +ciequal(ap, bp) /* case-insensitive equality */ +register const char * ap; +register const char * bp; +{ + while (lowerit(*ap) == lowerit(*bp++)) + if (*ap++ == '\0') + return TRUE; + return FALSE; +} + +static int +itsabbr(abbr, word) +register const char * abbr; +register const char * word; +{ + if (lowerit(*abbr) != lowerit(*word)) + return FALSE; + ++word; + while (*++abbr != '\0') + do { + if (*word == '\0') + return FALSE; + } while (lowerit(*word++) != lowerit(*abbr)); + return TRUE; +} + +static const struct lookup * +byword(word, table) +register const char * const word; +register const struct lookup * const table; +{ + register const struct lookup * foundlp; + register const struct lookup * lp; + + if (word == NULL || table == NULL) + return NULL; + /* + ** Look for exact match. + */ + for (lp = table; lp->l_word != NULL; ++lp) + if (ciequal(word, lp->l_word)) + return lp; + /* + ** Look for inexact match. + */ + foundlp = NULL; + for (lp = table; lp->l_word != NULL; ++lp) + if (itsabbr(word, lp->l_word)) { + if (foundlp == NULL) + foundlp = lp; + else return NULL; /* multiple inexact matches */ + } + return foundlp; +} + +static char ** +getfields(cp) +register char * cp; +{ + register char * dp; + register char ** array; + register int nsubs; + + if (cp == NULL) + return NULL; + array = (char **) (void *) + emalloc((int) ((strlen(cp) + 1) * sizeof *array)); + nsubs = 0; + for ( ; ; ) { + while (isascii(*cp) && isspace((unsigned char) *cp)) + ++cp; + if (*cp == '\0' || *cp == '#') + break; + array[nsubs++] = dp = cp; + do { + if ((*dp = *cp++) != '"') + ++dp; + else while ((*dp = *cp++) != '"') + if (*dp != '\0') + ++dp; + else error(_("Odd number of quotation marks")); + } while (*cp != '\0' && *cp != '#' && + (!isascii(*cp) || !isspace((unsigned char) *cp))); + if (isascii(*cp) && isspace((unsigned char) *cp)) + ++cp; + *dp = '\0'; + } + array[nsubs] = NULL; + return array; +} + +static long +oadd(t1, t2) +const long t1; +const long t2; +{ + register long t; + + t = t1 + t2; + if ((t2 > 0 && t <= t1) || (t2 < 0 && t >= t1)) { + error(_("time overflow")); + (void) exit(EXIT_FAILURE); + } + return t; +} + +static time_t +tadd(t1, t2) +const time_t t1; +const long t2; +{ + register time_t t; + + if (t1 == max_time && t2 > 0) + return max_time; + if (t1 == min_time && t2 < 0) + return min_time; + t = t1 + t2; + if ((t2 > 0 && t <= t1) || (t2 < 0 && t >= t1)) { + error(_("time overflow")); + (void) exit(EXIT_FAILURE); + } + return t; +} + +/* +** Given a rule, and a year, compute the date - in seconds since January 1, +** 1970, 00:00 LOCAL time - in that year that the rule refers to. +*/ + +static time_t +rpytime(rp, wantedy) +register const struct rule * const rp; +register const int wantedy; +{ + register int y, m, i; + register long dayoff; /* with a nod to Margaret O. */ + register time_t t; + + if (wantedy == INT_MIN) + return min_time; + if (wantedy == INT_MAX) + return max_time; + dayoff = 0; + m = TM_JANUARY; + y = EPOCH_YEAR; + while (wantedy != y) { + if (wantedy > y) { + i = len_years[isleap(y)]; + ++y; + } else { + --y; + i = -len_years[isleap(y)]; + } + dayoff = oadd(dayoff, eitol(i)); + } + while (m != rp->r_month) { + i = len_months[isleap(y)][m]; + dayoff = oadd(dayoff, eitol(i)); + ++m; + } + i = rp->r_dayofmonth; + if (m == TM_FEBRUARY && i == 29 && !isleap(y)) { + if (rp->r_dycode == DC_DOWLEQ) + --i; + else { + error(_("use of 2/29 in non leap-year")); + (void) exit(EXIT_FAILURE); + } + } + --i; + dayoff = oadd(dayoff, eitol(i)); + if (rp->r_dycode == DC_DOWGEQ || rp->r_dycode == DC_DOWLEQ) { + register long wday; + +#define LDAYSPERWEEK ((long) DAYSPERWEEK) + wday = eitol(EPOCH_WDAY); + /* + ** Don't trust mod of negative numbers. + */ + if (dayoff >= 0) + wday = (wday + dayoff) % LDAYSPERWEEK; + else { + wday -= ((-dayoff) % LDAYSPERWEEK); + if (wday < 0) + wday += LDAYSPERWEEK; + } + while (wday != eitol(rp->r_wday)) + if (rp->r_dycode == DC_DOWGEQ) { + dayoff = oadd(dayoff, (long) 1); + if (++wday >= LDAYSPERWEEK) + wday = 0; + ++i; + } else { + dayoff = oadd(dayoff, (long) -1); + if (--wday < 0) + wday = LDAYSPERWEEK - 1; + --i; + } + if (i < 0 || i >= len_months[isleap(y)][m]) { + error(_("no day in month matches rule")); + (void) exit(EXIT_FAILURE); + } + } + if (dayoff < 0 && !TYPE_SIGNED(time_t)) + return min_time; + if (dayoff < min_time / SECSPERDAY) + return min_time; + if (dayoff > max_time / SECSPERDAY) + return max_time; + t = (time_t) dayoff * SECSPERDAY; + return tadd(t, rp->r_tod); +} + +static void +newabbr(string) +const char * const string; +{ + register int i; + + i = strlen(string) + 1; + if (charcnt + i > TZ_MAX_CHARS) { + error(_("too many, or too long, time zone abbreviations")); + (void) exit(EXIT_FAILURE); + } + (void) strcpy(&chars[charcnt], string); + charcnt += eitol(i); +} + +static int +mkdirs(argname) +char * const argname; +{ + register char * name; + register char * cp; + + if (argname == NULL || *argname == '\0') + return 0; + cp = name = ecpyalloc(argname); + while ((cp = strchr(cp + 1, '/')) != 0) { + *cp = '\0'; +#ifndef unix + /* + ** DOS drive specifier? + */ + if (isalpha((unsigned char) name[0]) && + name[1] == ':' && name[2] == '\0') { + *cp = '/'; + continue; + } +#endif /* !defined unix */ + if (!itsdir(name)) { + /* + ** It doesn't seem to exist, so we try to create it. + ** Creation may fail because of the directory being + ** created by some other multiprocessor, so we get + ** to do extra checking. + */ + if (mkdir(name, MKDIR_UMASK) != 0) { + const char *e = strerror(errno); + + if (errno != EEXIST || !itsdir(name)) { + (void) fprintf(stderr, +_("%s: Can't create directory %s: %s\n"), + progname, name, e); + ifree(name); + return -1; + } + } + } + *cp = '/'; + } + ifree(name); + return 0; +} + +static long +eitol(i) +const int i; +{ + long l; + + l = i; + if ((i < 0 && l >= 0) || (i == 0 && l != 0) || (i > 0 && l <= 0)) { + (void) fprintf(stderr, + _("%s: %d did not sign extend correctly\n"), + progname, i); + (void) exit(EXIT_FAILURE); + } + return l; +} + +/* +** UNIX was a registered trademark of The Open Group in 2003. +*/ + + +#ifdef WIN32 +/* + * To run on win32 + */ +int link(const char *oldpath, const char *newpath) { + if (!CopyFileEx(oldpath, newpath, NULL, NULL, FALSE, 0)) { + return -1; + } + return 0; +} +#endif |