/* Define current locale data for LC_TIME category.
- Copyright (C) 1995, 1996, 1997, 1998, 1999 Free Software Foundation, Inc.
+ Copyright (C) 1995-2023 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.
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 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.
+ Lesser 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., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
-#include <bits/libc-lock.h>
-#include <endian.h>
-#include <stdlib.h>
-#include <string.h>
-#include <time.h>
-#include <wchar.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 const void **eras_nf;
-static size_t num_eras;
-
-#define ERAS_NF(cnt, category) \
- *(eras_nf + ERA_NAME_FORMAT_MEMBERS * (cnt) + (category))
-
-static int alt_digits_initialized;
-static const char **alt_digits;
-
-
-static int walt_digits_initialized;
-static const wchar_t **walt_digits;
-
-
-void
-_nl_postload_time (void)
-{
- /* Prepare lazy initialization of `era' and `alt_digits' array. */
- era_initialized = 0;
- alt_digits_initialized = 0;
- walt_digits_initialized = 0;
-}
-
-
-static void
-init_era_entry (void)
-{
- size_t cnt;
-
- if (era_initialized == 0)
- {
- size_t new_num_eras = _NL_CURRENT_WORD (LC_TIME,
- _NL_TIME_ERA_NUM_ENTRIES);
-
- if (new_num_eras == 0)
- {
- if (eras != NULL)
- {
- free (eras);
- eras = NULL;
- }
- if (eras_nf != NULL)
- {
- free (eras_nf);
- eras_nf = NULL;
- }
- }
- else
- {
- if (num_eras != new_num_eras)
- {
- eras = realloc (eras,
- new_num_eras * sizeof (struct era_entry *));
- eras_nf = realloc (eras_nf,
- new_num_eras * sizeof (void *)
- * ERA_NAME_FORMAT_MEMBERS);
- }
-
- if (eras == NULL || eras_nf == NULL)
- {
- num_eras = 0;
- eras = NULL;
- eras_nf = NULL;
- }
- else
- {
- const char *ptr = _NL_CURRENT (LC_TIME, _NL_TIME_ERA_ENTRIES);
- 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);
-
- /* Set and skip era name. */
- ERAS_NF (cnt, ERA_M_NAME) = (void *) ptr;
- ptr = strchr (ptr, '\0') + 1;
-
- /* Set and skip era format. */
- ERAS_NF (cnt, ERA_M_FORMAT) = (void *) ptr;
- ptr = strchr (ptr, '\0') + 1;
-
- ptr += 3 - (((ptr - (const char *) eras[cnt]) + 3) & 3);
-
- /* Set and skip wide era name. */
- ERAS_NF (cnt, ERA_W_NAME) = (void *) ptr;
- ptr = (char *) (wcschr ((wchar_t *) ptr, '\0') + 1);
-
- /* Set and skip wide era format. */
- ERAS_NF (cnt, ERA_W_FORMAT) = (void *) ptr;
- ptr = (char *) (wcschr ((wchar_t *) ptr, '\0') + 1);
- }
- }
- }
-
- era_initialized = 1;
- }
-}
-
-
-struct era_entry *
-_nl_get_era_entry (const struct tm *tp)
-{
- struct era_entry *result;
- size_t cnt;
-
- __libc_lock_lock (__libc_setlocale_lock);
-
- init_era_entry ();
-
- /* 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 void *
-_nl_get_era_nf_entry (int cnt, int category)
-{
- const void *result;
-
- __libc_lock_lock (__libc_setlocale_lock);
-
- init_era_entry ();
-
- if (eras_nf == NULL)
- result = NULL;
- else
- result = ERAS_NF (cnt, category);
-
- __libc_lock_unlock (__libc_setlocale_lock);
-
- return result;
-}
-
-
-int
-_nl_get_era_year_offset (int cnt, int val)
-{
- __libc_lock_lock (__libc_setlocale_lock);
-
- init_era_entry ();
-
- if (eras == NULL)
- val = -1;
- else
- {
- val -= eras[cnt]->offset;
-
- if (val < 0 ||
- val > (eras[cnt]->stop_date[0] - eras[cnt]->start_date[0]))
- val = -1;
- }
-
- __libc_lock_unlock (__libc_setlocale_lock);
-
- return val;
-}
-
-
-int
-_nl_get_era_year_start (int cnt)
-{
- int result;
-
- __libc_lock_lock (__libc_setlocale_lock);
-
- init_era_entry ();
-
- result = eras[cnt]->start_date[0];
-
- __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)
- {
- alt_digits_initialized = 1;
-
- if (alt_digits == NULL)
- alt_digits = malloc (100 * sizeof (const char *));
-
- if (alt_digits != NULL)
- {
- const char *ptr = _NL_CURRENT (LC_TIME, ALT_DIGITS);
- size_t cnt;
-
- if (alt_digits != NULL)
- for (cnt = 0; cnt < 100; ++cnt)
- {
- alt_digits[cnt] = ptr;
-
- /* Skip digit format. */
- ptr = strchr (ptr, '\0') + 1;
- }
- }
- }
-
- result = alt_digits != NULL && number < 100 ? alt_digits[number] : NULL;
-
- __libc_lock_unlock (__libc_setlocale_lock);
-
- return result;
-}
-
-
-const wchar_t *
-_nl_get_walt_digit (unsigned int number)
-{
- const wchar_t *result;
-
- __libc_lock_lock (__libc_setlocale_lock);
-
- if (walt_digits_initialized == 0)
- {
- walt_digits_initialized = 1;
-
- if (walt_digits == NULL)
- walt_digits = malloc (100 * sizeof (const uint32_t *));
-
- if (walt_digits != NULL)
- {
- const wchar_t *ptr = _NL_CURRENT_WSTR (LC_TIME, _NL_WALT_DIGITS);
- size_t cnt;
-
- for (cnt = 0; cnt < 100; ++cnt)
- {
- walt_digits[cnt] = ptr;
-
- /* Skip digit format. */
- ptr = wcschr (ptr, L'\0') + 1;
- }
- }
- }
-
- result = walt_digits != NULL && number < 100 ? walt_digits[number] : NULL;
-
- __libc_lock_unlock (__libc_setlocale_lock);
-
- return (wchar_t *) result;
-}
projects / thirdparty / glibc.git / blobdiff