-/* Copyright (C) 1991, 1992, 1993 Free Software Foundation, Inc.
+/* Copyright (C) 1991, 92, 93, 94, 95, 96 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
Cambridge, MA 02139, USA. */
#include <ansidecl.h>
-#include <localeinfo.h>
#include <ctype.h>
#include <stddef.h>
#include <stdio.h>
#include <string.h>
#include <time.h>
-#ifndef HAVE_GNU_LD
-#define __tzname tzname
-#define __daylight daylight
-#define __timezone timezone
-#endif
+/* Defined in mktime.c. */
+extern CONST unsigned short int __mon_yday[2][13];
+
+#define NOID
+#include "tzfile.h"
extern int __use_tzfile;
extern void EXFUN(__tzfile_read, (CONST char *file));
int __daylight = 0;
long int __timezone = 0L;
+weak_alias (__tzname, tzname)
+weak_alias (__daylight, daylight)
+weak_alias (__timezone, timezone)
+
#define min(a, b) ((a) < (b) ? (a) : (b))
#define max(a, b) ((a) > (b) ? (a) : (b))
/* tz_rules[0] is standard, tz_rules[1] is daylight. */
static tz_rule tz_rules[2];
\f
-static int tzset_run = 0;
+int __tzset_run = 0;
/* Interpret the TZ envariable. */
void
__tzfile_read(tz + 1);
if (__use_tzfile)
{
- tzset_run = 1;
+ __tzset_run = 1;
return;
}
else
}
if (tz == NULL || *tz == '\0')
- tz = _time_info->tz;
- if (tz == NULL || *tz == '\0')
{
__tzfile_read((char *) NULL);
if (!__use_tzfile)
{
- size_t len = strlen(_time_info->ut0) + 1;
+ const char UTC[] = "UTC";
+ size_t len = sizeof UTC;
tz_rules[0].name = (char *) malloc(len);
if (tz_rules[0].name == NULL)
return;
tz_rules[1].name = (char *) malloc(len);
if (tz_rules[1].name == NULL)
return;
- memcpy((PTR) tz_rules[0].name, _time_info->ut0, len);
- memcpy((PTR) tz_rules[1].name, _time_info->ut0, len);
+ memcpy ((PTR) tz_rules[0].name, UTC, len);
+ memcpy ((PTR) tz_rules[1].name, UTC, len);
tz_rules[0].type = tz_rules[1].type = J0;
tz_rules[0].m = tz_rules[0].n = tz_rules[0].d = 0;
tz_rules[1].m = tz_rules[1].n = tz_rules[1].d = 0;
tz_rules[0].change = tz_rules[1].change = (time_t) -1;
tz_rules[0].computed_for = tz_rules[1].computed_for = 0;
}
- tzset_run = 1;
+ __tzset_run = 1;
return;
}
+ /* Clear out old state and reset to unnamed UTC. */
+ memset (tz_rules, 0, sizeof tz_rules);
+ tz_rules[0].name = tz_rules[1].name = (char *) "";
+
/* Get the standard timezone name. */
- tz_rules[0].name = (char *) malloc(strlen(tz) + 1);
+ tz_rules[0].name = (char *) malloc (strlen (tz) + 1);
if (tz_rules[0].name == NULL)
+ /* Don't set __tzset_run so we will try again. */
return;
if (sscanf(tz, "%[^0-9,+-]", tz_rules[0].name) != 1 ||
(l = strlen(tz_rules[0].name)) < 3)
- return;
+ {
+ free (tz_rules[0].name);
+ tz_rules[0].name = (char *) "";
+ return;
+ }
- tz_rules[0].name = (char *) realloc((PTR) tz_rules[0].name, l + 1);
- if (tz_rules[0].name == NULL)
- return;
+ {
+ char *n = realloc ((PTR) tz_rules[0].name, l + 1);
+ if (n != NULL)
+ tz_rules[0].name = n;
+ }
tz += l;
- /* Figure out the standard offset from GMT. */
+ /* Figure out the standard offset from UTC. */
if (*tz == '\0' || (*tz != '+' && *tz != '-' && !isdigit(*tz)))
return;
break;
}
tz_rules[0].offset *= (min(ss, 59) + (min(mm, 59) * 60) +
- (min(hh, 12) * 60 * 60));
+ (min(hh, 23) * 60 * 60));
for (l = 0; l < 3; ++l)
{
}
/* Get the DST timezone name (if any). */
- if (*tz == '\0')
- tz_rules[1].name = (char *) "";
- else
+ if (*tz != '\0')
{
- tz_rules[1].name = (char *) malloc(strlen(tz) + 1);
- if (tz_rules[1].name == NULL)
- return;
- if (sscanf(tz, "%[^0-9,+-]", tz_rules[1].name) != 1 ||
- (l = strlen(tz_rules[1].name)) < 3)
- return;
- tz_rules[1].name = (char *) realloc((PTR) tz_rules[1].name, l + 1);
- if (tz_rules[1].name == NULL)
- return;
+ char *n = malloc (strlen(tz) + 1);
+ if (n != NULL)
+ {
+ tz_rules[1].name = n;
+ if (sscanf(tz, "%[^0-9,+-]", tz_rules[1].name) != 1 ||
+ (l = strlen(tz_rules[1].name)) < 3)
+ {
+ free (n);
+ tz_rules[1].name = (char *) "";
+ goto done_names; /* Punt on name, set up the offsets. */
+ }
+ n = realloc ((PTR) tz_rules[1].name, l + 1);
+ if (n != NULL)
+ tz_rules[1].name = n;
+ }
}
tz += l;
ss = 0;
case 3:
tz_rules[1].offset *= (min(ss, 59) + (min(mm, 59) * 60) +
- (min(hh, 12) * (60 * 60)));
+ (min(hh, 23) * (60 * 60)));
break;
}
for (l = 0; l < 3; ++l)
{
- while (isdigit(*tz))
+ while (isdigit (*tz))
++tz;
if (l < 2 && *tz == ':')
++tz;
}
- /* If no standard or DST offset was given, default to GMT
- for standard and one hour later than standard for DST. */
- if (*tz_rules[0].name == '\0')
- tz_rules[0].offset = 0L;
- if (*tz_rules[1].name == '\0')
- tz_rules[1].offset = tz_rules[0].offset + (60 * 60);
+ done_names:
if (*tz == '\0' || (tz[0] == ',' && tz[1] == '\0'))
{
__tzfile_default (tz_rules[0].name, tz_rules[1].name,
tz_rules[0].offset, tz_rules[1].offset);
if (__use_tzfile)
- return;
+ {
+ __tzset_run = 1;
+ return;
+ }
}
/* Figure out the standard <-> DST rules. */
for (whichrule = 0; whichrule < 2; ++whichrule)
{
register tz_rule *tzr = &tz_rules[whichrule];
-
- if (*tz != '\0' && *tz == ',')
+
+ if (*tz == ',')
{
++tz;
if (*tz == '\0')
return;
}
-
+
/* Get the date of the change. */
- if (*tz == 'J' || isdigit(*tz))
+ if (*tz == 'J' || isdigit (*tz))
{
char *end;
tzr->type = *tz == 'J' ? J1 : J0;
- if (tzr->type == J1 && !isdigit(*++tz))
+ if (tzr->type == J1 && !isdigit (*++tz))
return;
- tzr->d = (unsigned short int) strtoul(tz, &end, 10);
+ tzr->d = (unsigned short int) strtoul (tz, &end, 10);
if (end == tz || tzr->d > 365)
return;
else if (tzr->type == J1 && tzr->d == 0)
}
else if (*tz == '\0')
{
- /* United States Federal Law, the equivalent of "M3.1.0,M8.5.0". */
+ /* United States Federal Law, the equivalent of "M4.1.0,M10.5.0". */
tzr->type = M;
if (tzr == &tz_rules[0])
{
}
else
return;
-
+
if (*tz != '\0' && *tz != '/' && *tz != ',')
return;
else if (*tz == '/')
++tz;
if (*tz == '\0')
return;
- switch (sscanf(tz, "%hu:%hu:%hu", &hh, &mm, &ss))
+ switch (sscanf (tz, "%hu:%hu:%hu", &hh, &mm, &ss))
{
default:
- return;
+ hh = 2; /* Default to 2:00 AM. */
case 1:
mm = 0;
case 2:
tzr->computed_for = -1;
}
- tzset_run = 1;
+ __tzset_run = 1;
+}
+\f
+/* Maximum length of a timezone name. __tz_compute keeps this up to date
+ (never decreasing it) when ! __use_tzfile.
+ tzfile.c keeps it up to date when __use_tzfile. */
+long int __tzname_cur_max;
+
+long int
+DEFUN_VOID(__tzname_max)
+{
+ if (! __tzset_run)
+ __tzset ();
+
+ return __tzname_cur_max;
}
\f
/* Figure out the exact time (as a time_t) in YEAR
if (year != -1 && rule->computed_for == year)
/* Operations on times in 1969 will be slower. Oh well. */
return 1;
-
+
/* First set T to January 1st, 0:00:00 GMT in YEAR. */
t = 0;
for (y = 1970; y < year; ++y)
case J0:
/* n - Day of year.
Just add SECSPERDAY times the day number to the time of Jan 1st. */
- t += r->day * SECSPERDAY;
+ t += rule->d * SECSPERDAY;
break;
case M:
/* Mm.n.d - Nth "Dth day" of month M. */
{
- register unsigned int i, d, m1, yy0, yy1, yy2, dow;
+ register int i, d, m1, yy0, yy1, yy2, dow;
+ register CONST unsigned short int *myday =
+ &__mon_yday[__isleap (year)][rule->m];
/* First add SECSPERDAY for each day in months before M. */
- for (i = 0; i <= rule->m; ++i)
- t += __mon_lengths[__isleap (year)][i] * SECSPERDAY;
+ t += myday[-1] * SECSPERDAY;
/* Use Zeller's Congruence to get day-of-week of first day of month. */
m1 = (rule->m + 9) % 12 + 1;
d += 7;
for (i = 1; i < rule->n; ++i)
{
- if (d + 7 >= __mon_lengths[__isleap (year)][rule->m - 1])
+ if (d + 7 >= myday[0] - myday[-1])
break;
d += 7;
}
Return nonzero on success, zero on failure. */
int
DEFUN(__tz_compute, (timer, tm),
- time_t timer AND struct tm tm)
+ time_t timer AND const struct tm *tm)
{
- if (!tzset_run)
- __tzset();
+ if (! __tzset_run)
+ __tzset ();
- if (__use_tzfile)
- return __tzfile_compute(timer, tm);
-
- if (!compute_change(&tz_rules[0], tm.tm_year) ||
- !compute_change(&tz_rules[1], tm.tm_year))
+ if (! compute_change (&tz_rules[0], 1900 + tm->tm_year) ||
+ ! compute_change (&tz_rules[1], 1900 + tm->tm_year))
return 0;
__daylight = timer >= tz_rules[0].change && timer < tz_rules[1].change;
__tzname[0] = (char *) tz_rules[0].name;
__tzname[1] = (char *) tz_rules[1].name;
+ {
+ /* Keep __tzname_cur_max up to date. */
+ size_t len0 = strlen (__tzname[0]);
+ size_t len1 = strlen (__tzname[1]);
+ if (len0 > __tzname_cur_max)
+ __tzname_cur_max = len0;
+ if (len1 > __tzname_cur_max)
+ __tzname_cur_max = len1;
+ }
+
return 1;
}
-
-long int
-DEFUN_VOID (__tzname_max)
-{
- size_t len0 = strlen (__tzname[0]), len1 = strlen (__tzname[1]);
- return len0 > len1 ? len0 : len1;
-}
+weak_alias (__tzset, tzset)
projects / kopensolaris-gnu / glibc.git / blobdiff