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- /* User interface for extracting locale-dependent parameters.
- Copyright (C) 1995, 1996, 1997, 1999, 2000 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., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
- #include <stddef.h>
- #include <time.h>
- #include <langinfo.h>
- #include <limits.h>
- #include <errno.h>
- #include <locale.h>
- #include <langinfo.h>
- #include <sys/types.h>
- /* Structure describing locale data in core for a category. */
- struct locale_data
- {
- const char *name;
- const char *filedata; /* Region mapping the file data. */
- off_t filesize; /* Size of the file (and the region). */
- int mmaped; /* If nonzero the data is mmaped. */
- unsigned int usage_count; /* Counter for users. */
- unsigned int nstrings; /* Number of strings below. */
- union locale_data_value
- {
- const wchar_t *wstr;
- const char *string;
- unsigned int word;
- }
- values[0]; /* Items, usually pointers into `filedata'. */
- };
- /* For each category declare two external variables (with weak references):
- * extern const struct locale_data *_nl_current_CATEGORY;
- * This points to the current locale's in-core data for CATEGORY.
- * extern const struct locale_data _nl_C_CATEGORY;
- * This contains the built-in "C"/"POSIX" locale's data for CATEGORY.
- * Both are weak references; if &_nl_current_CATEGORY is zero,
- * then nothing is using the locale data. */
- #define DEFINE_CATEGORY(category, category_name, items, a, b, c, d) \
- extern struct locale_data *_nl_current_##category; \
- extern struct locale_data _nl_C_##category;
- #include "categories.c"
- #undef DEFINE_CATEGORY
- /* Array indexed by category of pointers to _nl_C_CATEGORY slots.
- * Elements are zero for categories whose data is never used. */
- struct locale_data *const _nl_C[] =
- {
- #define DEFINE_CATEGORY(category, category_name, items, a, b, c, d) \
- [category] = &_nl_C_##category,
- #include "categories.c"
- #undef DEFINE_CATEGORY
- };
- /* Return a string with the data for locale-dependent parameter ITEM. */
- char * nl_langinfo (nl_item item)
- {
- int category = _NL_ITEM_CATEGORY (item);
- unsigned int index = _NL_ITEM_INDEX (item);
- const struct locale_data *data;
- if (category < 0 || category >= LC_ALL)
- /* Bogus category: bogus item. */
- return (char *) "";
- data = _nl_C[category];
- if (index >= data->nstrings)
- /* Bogus index for this category: bogus item. */
- return (char *) "";
- /* Return the string for the specified item. */
- return (char *) data->values[index].string;
- }
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