210 lines
6.6 KiB
C
210 lines
6.6 KiB
C
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/* Declarations for internal libc locale interfaces
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Copyright (C) 1995, 96, 97, 98, 99,2000,2001 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#ifndef _LOCALEINFO_H
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#define _LOCALEINFO_H 1
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#include <stddef.h>
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#include <langinfo.h>
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#include <limits.h>
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#include <time.h>
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#include <stdint.h>
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#include <sys/types.h>
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/* This has to be changed whenever a new locale is defined. */
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#define __LC_LAST 13
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#include "loadinfo.h" /* For loaded_l10nfile definition. */
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/* Magic number at the beginning of a locale data file for CATEGORY. */
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#define LIMAGIC(category) ((unsigned int) (0x20000828 ^ (category)))
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/* Two special weight constants for the collation data. */
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#define IGNORE_CHAR 2
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/* We use a special value for the usage counter in `locale_data' to
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signal that this data must never be removed anymore. */
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#define MAX_USAGE_COUNT (UINT_MAX - 1)
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#define UNDELETABLE UINT_MAX
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/* Structure describing locale data in core for a category. */
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struct locale_data
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{
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const char *name;
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const char *filedata; /* Region mapping the file data. */
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off_t filesize; /* Size of the file (and the region). */
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int mmaped; /* If nonzero the data is mmaped. */
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unsigned int usage_count; /* Counter for users. */
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int use_translit; /* Nonzero if the mb*towv*() and wc*tomb()
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functions should use transliteration. */
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const char *options; /* Extra options from the locale name,
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not used in the path to the locale data. */
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unsigned int nstrings; /* Number of strings below. */
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union locale_data_value
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{
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const uint32_t *wstr;
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const char *string;
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unsigned int word;
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}
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values __flexarr; /* Items, usually pointers into `filedata'. */
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};
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/* We know three kinds of collation sorting rules. */
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enum coll_sort_rule
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{
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illegal_0__,
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sort_forward,
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sort_backward,
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illegal_3__,
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sort_position,
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sort_forward_position,
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sort_backward_position,
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sort_mask
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};
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/* We can map the types of the entries into a few categories. */
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enum value_type
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{
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none,
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string,
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stringarray,
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byte,
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bytearray,
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word,
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stringlist,
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wordarray,
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wstring,
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wstringarray,
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wstringlist
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};
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/* Definitions for `era' information from LC_TIME. */
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#define ERA_NAME_FORMAT_MEMBERS 4
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#define ERA_M_NAME 0
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#define ERA_M_FORMAT 1
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#define ERA_W_NAME 2
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#define ERA_W_FORMAT 3
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/* Structure to access `era' information from LC_TIME. */
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struct era_entry
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{
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uint32_t direction; /* Contains '+' or '-'. */
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int32_t offset;
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int32_t start_date[3];
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int32_t stop_date[3];
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const char *era_name;
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const char *era_format;
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const wchar_t *era_wname;
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const wchar_t *era_wformat;
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int absolute_direction;
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/* absolute direction:
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+1 indicates that year number is higher in the future. (like A.D.)
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-1 indicates that year number is higher in the past. (like B.C.) */
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};
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/* LC_CTYPE specific:
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Hardwired indices for standard wide character translation mappings. */
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enum
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{
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__TOW_toupper = 0,
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__TOW_tolower = 1
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};
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/* LC_CTYPE specific:
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Access a wide character class with a single character index.
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_ISCTYPE (c, desc) = iswctype (btowc (c), desc).
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c must be an `unsigned char'. desc must be a nonzero wctype_t. */
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#define _ISCTYPE(c, desc) \
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(((((const uint32_t *) (desc)) - 8)[(c) >> 5] >> ((c) & 0x1f)) & 1)
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/* For each category declare the variable for the current locale data. */
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#define DEFINE_CATEGORY(category, category_name, items, a) \
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extern struct locale_data *_nl_current_##category;
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#include "categories.def"
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#undef DEFINE_CATEGORY
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extern const char *const _nl_category_names[__LC_LAST];
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extern const size_t _nl_category_name_sizes[__LC_LAST];
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extern struct locale_data * *const _nl_current[__LC_LAST];
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/* Extract the current CATEGORY locale's string for ITEM. */
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#define _NL_CURRENT(category, item) \
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(_nl_current_##category->values[_NL_ITEM_INDEX (item)].string)
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/* Extract the current CATEGORY locale's string for ITEM. */
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#define _NL_CURRENT_WSTR(category, item) \
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((wchar_t *) (_nl_current_##category->values[_NL_ITEM_INDEX (item)].wstr))
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/* Extract the current CATEGORY locale's word for ITEM. */
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#define _NL_CURRENT_WORD(category, item) \
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(_nl_current_##category->values[_NL_ITEM_INDEX (item)].word)
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/* This is used in lc-CATEGORY.c to define _nl_current_CATEGORY. */
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#define _NL_CURRENT_DEFINE(category) \
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extern struct locale_data _nl_C_##category; \
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struct locale_data *_nl_current_##category = &_nl_C_##category
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/* Load the locale data for CATEGORY from the file specified by *NAME.
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If *NAME is "", use environment variables as specified by POSIX,
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and fill in *NAME with the actual name used. The directories
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listed in LOCALE_PATH are searched for the locale files. */
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extern struct locale_data *_nl_find_locale (const char *locale_path,
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size_t locale_path_len,
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int category, const char **name);
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/* Try to load the file described by FILE. */
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extern void _nl_load_locale (struct loaded_l10nfile *file, int category);
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/* Free all resource. */
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extern void _nl_unload_locale (struct locale_data *locale);
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/* Free the locale and give back all memory if the usage count is one. */
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extern void _nl_remove_locale (int locale, struct locale_data *data);
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/* Return `era' entry which corresponds to TP. Used in strftime. */
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extern struct era_entry *_nl_get_era_entry (const struct tm *tp);
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/* Return `era' cnt'th entry . Used in strptime. */
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extern struct era_entry *_nl_select_era_entry (int cnt);
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/* Return `alt_digit' which corresponds to NUMBER. Used in strftime. */
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extern const char *_nl_get_alt_digit (unsigned int number);
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/* Similar, but now for wide characters. */
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extern const wchar_t *_nl_get_walt_digit (unsigned int number);
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/* Parse string as alternative digit and return numeric value. */
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extern int _nl_parse_alt_digit (const char **strp);
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/* Postload processing. */
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extern void _nl_postload_ctype (void);
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extern void _nl_postload_time (void);
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#endif /* localeinfo.h */
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