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/* Define current locale data for LC_TIME category.
Copyright (C) 1995, 1996 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
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If
not, write to the Free Software Foundation, Inc., 675 Mass Ave,
Cambridge, MA 02139, USA. */
#include <libc-lock.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include "localeinfo.h"
_NL_CURRENT_DEFINE (LC_TIME);
/* Some of the functions here must not be used while setlocale is called. */
__libc_lock_define (extern, __libc_setlocale_lock)
static int era_initialized;
static struct era_entry **eras;
static size_t num_eras;
static int alt_digits_initialized;
static const char **alt_digits;
static size_t num_alt_digits;
void
_nl_postload_time (void)
{
/* Prepare lazy initialization of `era' and `alt_digits' array. */
era_initialized = 0;
alt_digits_initialized = 0;
}
struct era_entry *
_nl_get_era_entry (const struct tm *tp)
{
struct era_entry *result;
size_t cnt;
__libc_lock_lock (__libc_setlocale_lock);
if (era_initialized == 0)
{
size_t new_num_eras = _NL_CURRENT_WORD (LC_TIME,
_NL_TIME_ERA_NUM_ENTRIES);
if (eras != NULL && new_num_eras == 0)
{
free (eras);
eras = NULL;
}
else if (new_num_eras != 0)
{
if (num_eras != new_num_eras)
eras = realloc (eras, new_num_eras * sizeof (struct era_entry *));
if (eras == NULL)
num_eras = 0;
else
{
#if __BYTE_ORDER == __LITTLE_ENDIAN
const char *ptr = _NL_CURRENT (LC_TIME, _NL_TIME_ERA_ENTRIES_EL);
#else
const char *ptr = _NL_CURRENT (LC_TIME, _NL_TIME_ERA_ENTRIES_EB);
#endif
num_eras = new_num_eras;
for (cnt = 0; cnt < num_eras; ++cnt)
{
eras[cnt] = (struct era_entry *) ptr;
/* Skip numeric values. */
ptr += sizeof (struct era_entry);
/* Skip era name. */
ptr = strchr (ptr, '\0') + 1;
/* Skip era format. */
ptr = strchr (ptr, '\0') + 1;
ptr += 3 - (((ptr - (const char *) eras[cnt]) + 3) & 3);
}
}
}
era_initialized = 1;
}
/* Now compare date with the available eras. */
for (cnt = 0; cnt < num_eras; ++cnt)
if ((eras[cnt]->start_date[0] < tp->tm_year
|| (eras[cnt]->start_date[0] == tp->tm_year
&& (eras[cnt]->start_date[1] < tp->tm_mon
|| (eras[cnt]->start_date[1] == tp->tm_mon
&& eras[cnt]->start_date[2] <= tp->tm_mday))))
&& (eras[cnt]->stop_date[0] > tp->tm_year
|| (eras[cnt]->stop_date[0] == tp->tm_year
&& (eras[cnt]->stop_date[1] > tp->tm_mon
|| (eras[cnt]->stop_date[1] == tp->tm_mon
&& eras[cnt]->stop_date[2] >= tp->tm_mday)))))
break;
result = cnt < num_eras ? eras[cnt] : NULL;
__libc_lock_unlock (__libc_setlocale_lock);
return result;
}
const char *
_nl_get_alt_digit (unsigned int number)
{
const char *result;
__libc_lock_lock (__libc_setlocale_lock);
if (alt_digits_initialized == 0)
{
size_t new_num_alt_digits = _NL_CURRENT_WORD (LC_TIME,
_NL_TIME_NUM_ALT_DIGITS);
if (alt_digits != NULL && new_num_alt_digits == 0)
{
free (alt_digits);
alt_digits = NULL;
}
else if (new_num_alt_digits != 0)
{
if (num_alt_digits != new_num_alt_digits)
alt_digits = realloc (alt_digits, (new_num_alt_digits
* sizeof (const char *)));
if (alt_digits == NULL)
num_alt_digits = 0;
else
{
const char *ptr = _NL_CURRENT (LC_TIME, ALT_DIGITS);
size_t cnt;
num_alt_digits = new_num_alt_digits;
for (cnt = 0; cnt < num_alt_digits; ++cnt)
{
alt_digits[cnt] = ptr;
/* Skip digit format. */
ptr = strchr (ptr, '\0') + 1;
}
}
}
alt_digits_initialized = 1;
}
result = number < num_alt_digits ? alt_digits[number] : NULL;
__libc_lock_unlock (__libc_setlocale_lock);
return result;
}
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