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authorRoland McGrath <roland@gnu.org>2002-08-28 23:11:21 +0000
committerRoland McGrath <roland@gnu.org>2002-08-28 23:11:21 +0000
commitdf9f41c94286bcaac949fd490e11bde61b8a9567 (patch)
tree2d7deceaa2e48d4dc55a4be335ef9fc010ca161d /time/era.c
parent6e68eecf7b2d778e0bd488466a1798c3b3fd4dcc (diff)
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* locale/lc-time.c (_nl_init_era_entries, _nl_get_era_entry,
_nl_select_era_entry): Moved to ... * time/era.c: ... here, new file. (_nl_init_era_entries, _nl_get_era_entry, _nl_select_era_entry): Add internal_function to definitions. Take an additional argument giving the `struct locale_data *' to use. * locale/lc-time.c (_get_alt_digit, _nl_get_walt_digit, _nl_parse_alt_digit): Moved to ... * time/alt_digit.c: ... here, new file. * time/lc-time-cleanup.c: New file. * locale/lc-time.c (_nl_postload_time, free_mem): Functions removed. * locale/localeinfo.h (_nl_postload_time): Remove decl. (_nl_cleanup_time): Declare it. (_nl_get_era_entry, _nl_select_era_entry): Update decls. (_get_alt_digit, _nl_get_walt_digit, _nl_parse_alt_digit): Likewise. * time/Makefile (aux): New variable: era, alt_digit, lc-time-cleanup. * time/strftime.c: Pass locale data to helper functions. * time/strptime.c: Likewise. * locale/localeinfo.h (struct locale_data): New member `private' * locale/loadlocale.c (_nl_intern_locale_data): Initialize it. (_nl_unload_locale): Call LOCALE->private.cleanup if it is set. * locale/C-collate.c: Update initializer. * locale/C-identification.c: Likewise. * locale/C-measurement.c: Likewise. * locale/C-telephone.c: Likewise. * locale/C-address.c: Likewise. * locale/C-name.c: Likewise. * locale/C-paper.c: Likewise. * locale/C-time.c: Likewise. * locale/C-numeric.c: Likewise. * locale/C-monetary.c: Likewise. * locale/C-messages.c : Likewise. * locale/C-ctype.c: Likewise. * time/strptime.c [USE_IN_EXTENDED_LOCALE_MODEL] (_NL_CURRENT_WORD): Redefine this too.
Diffstat (limited to 'time/era.c')
-rw-r--r--time/era.c177
1 files changed, 177 insertions, 0 deletions
diff --git a/time/era.c b/time/era.c
new file mode 100644
index 0000000..a8d2237
--- /dev/null
+++ b/time/era.c
@@ -0,0 +1,177 @@
+/* Helper functions used by strftime/strptime to handle locale-specific "eras".
+ Copyright (C) 1995-2001,02 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 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include "../locale/localeinfo.h"
+#include <bits/libc-lock.h>
+#include <stdlib.h>
+#include <wchar.h>
+#include <string.h>
+
+/* Some of the functions here must not be used while setlocale is called. */
+__libc_lock_define (extern, __libc_setlocale_lock attribute_hidden)
+
+#define CURRENT(item) (current->values[_NL_ITEM_INDEX (item)].string)
+#define CURRENT_WORD(item) (current->values[_NL_ITEM_INDEX (item)].word)
+
+#define ERA_DATE_CMP(a, b) \
+ (a[0] < b[0] || (a[0] == b[0] && (a[1] < b[1] \
+ || (a[1] == b[1] && a[2] <= b[2]))))
+
+/* Look up the era information in CURRENT's locale strings and
+ cache it in CURRENT->private. */
+static void internal_function
+_nl_init_era_entries (struct locale_data *current)
+{
+ size_t cnt;
+ struct lc_time_data *data;
+
+ /* Avoid touching CURRENT if there is no data at all, for _nl_C_LC_TIME. */
+ if (CURRENT_WORD (_NL_TIME_ERA_NUM_ENTRIES) == 0)
+ return;
+
+ __libc_lock_lock (__libc_setlocale_lock);
+
+ if (current->private.time == NULL)
+ {
+ current->private.time = malloc (sizeof *current->private.time);
+ if (current->private.time == NULL)
+ goto out;
+ memset (current->private.time, 0, sizeof *current->private.time);
+ current->private.cleanup = &_nl_cleanup_time;
+ }
+ data = current->private.time;
+
+ if (! data->era_initialized)
+ {
+ size_t new_num_eras = CURRENT_WORD (_NL_TIME_ERA_NUM_ENTRIES);
+ if (new_num_eras == 0)
+ {
+ if (data->eras != NULL)
+ {
+ free (data->eras);
+ data->eras = NULL;
+ }
+ }
+ else
+ {
+ struct era_entry *new_eras = data->eras;
+
+ if (data->num_eras != new_num_eras)
+ new_eras =
+ (struct era_entry *) realloc (data->eras,
+ new_num_eras
+ * sizeof (struct era_entry));
+ if (new_eras == NULL)
+ {
+ free (data->eras);
+ data->num_eras = 0;
+ data->eras = NULL;
+ }
+ else
+ {
+ const char *ptr = CURRENT (_NL_TIME_ERA_ENTRIES);
+ data->num_eras = new_num_eras;
+ data->eras = new_eras;
+
+ for (cnt = 0; cnt < new_num_eras; ++cnt)
+ {
+ const char *base_ptr = ptr;
+ memcpy ((void *) (new_eras + cnt), (const void *) ptr,
+ sizeof (uint32_t) * 8);
+
+ if (ERA_DATE_CMP(new_eras[cnt].start_date,
+ new_eras[cnt].stop_date))
+ if (new_eras[cnt].direction == (uint32_t) '+')
+ new_eras[cnt].absolute_direction = 1;
+ else
+ new_eras[cnt].absolute_direction = -1;
+ else
+ if (new_eras[cnt].direction == (uint32_t) '+')
+ new_eras[cnt].absolute_direction = -1;
+ else
+ new_eras[cnt].absolute_direction = 1;
+
+ /* Skip numeric values. */
+ ptr += sizeof (uint32_t) * 8;
+
+ /* Set and skip era name. */
+ new_eras[cnt].era_name = ptr;
+ ptr = strchr (ptr, '\0') + 1;
+
+ /* Set and skip era format. */
+ new_eras[cnt].era_format = ptr;
+ ptr = strchr (ptr, '\0') + 1;
+
+ ptr += 3 - (((ptr - (const char *) base_ptr) + 3) & 3);
+
+ /* Set and skip wide era name. */
+ new_eras[cnt].era_wname = (wchar_t *) ptr;
+ ptr = (char *) (wcschr ((wchar_t *) ptr, L'\0') + 1);
+
+ /* Set and skip wide era format. */
+ new_eras[cnt].era_wformat = (wchar_t *) ptr;
+ ptr = (char *) (wcschr ((wchar_t *) ptr, L'\0') + 1);
+ }
+ }
+ }
+
+ data->era_initialized = 1;
+ }
+
+ out:
+ __libc_lock_unlock (__libc_setlocale_lock);
+}
+
+struct era_entry *
+internal_function
+_nl_get_era_entry (const struct tm *tp, struct locale_data *current)
+{
+ if (current->private.time == NULL || !current->private.time->era_initialized)
+ _nl_init_era_entries (current);
+
+ if (current->private.time != NULL)
+ {
+ /* Now compare date with the available eras. */
+ const int32_t tdate[3] = { tp->tm_year, tp->tm_mon, tp->tm_mday };
+ size_t cnt;
+ for (cnt = 0; cnt < current->private.time->num_eras; ++cnt)
+ if ((ERA_DATE_CMP (current->private.time->eras[cnt].start_date, tdate)
+ && ERA_DATE_CMP (tdate,
+ current->private.time->eras[cnt].stop_date))
+ || (ERA_DATE_CMP (current->private.time->eras[cnt].stop_date,
+ tdate)
+ && ERA_DATE_CMP (tdate,
+ current->private.time->eras[cnt].start_date)))
+ return &current->private.time->eras[cnt];
+ }
+
+ return NULL;
+}
+
+
+struct era_entry *
+internal_function
+_nl_select_era_entry (int cnt, struct locale_data *current)
+{
+ if (current->private.time == NULL || !current->private.time->era_initialized)
+ _nl_init_era_entries (current);
+
+ return (current->private.time == NULL
+ ? NULL : &current->private.time->eras[cnt]);
+}