1 /* Declarations for internal libc locale interfaces
2 Copyright (C) 1995-2001, 2002 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, write to the Free
17 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
21 #define _LOCALEINFO_H 1
29 #include <sys/types.h>
31 #include <intl/loadinfo.h> /* For loaded_l10nfile definition. */
33 /* Magic number at the beginning of a locale data file for CATEGORY. */
34 #define LIMAGIC(category) ((unsigned int) (0x20000828 ^ (category)))
36 /* Two special weight constants for the collation data. */
39 /* We use a special value for the usage counter in `locale_data' to
40 signal that this data must never be removed anymore. */
41 #define MAX_USAGE_COUNT (UINT_MAX - 1)
42 #define UNDELETABLE UINT_MAX
44 /* Structure describing locale data in core for a category. */
48 const char *filedata; /* Region mapping the file data. */
49 off_t filesize; /* Size of the file (and the region). */
50 int mmaped; /* If nonzero the data is mmaped. */
52 unsigned int usage_count; /* Counter for users. */
54 int use_translit; /* Nonzero if the mb*towv*() and wc*tomb()
55 functions should use transliteration. */
56 const char *options; /* Extra options from the locale name,
57 not used in the path to the locale data. */
59 unsigned int nstrings; /* Number of strings below. */
60 union locale_data_value
66 values __flexarr; /* Items, usually pointers into `filedata'. */
69 /* We know three kinds of collation sorting rules. */
77 sort_forward_position,
78 sort_backward_position,
82 /* We can map the types of the entries into a few categories. */
99 /* Definitions for `era' information from LC_TIME. */
100 #define ERA_NAME_FORMAT_MEMBERS 4
102 #define ERA_M_FORMAT 1
104 #define ERA_W_FORMAT 3
107 /* Structure to access `era' information from LC_TIME. */
110 uint32_t direction; /* Contains '+' or '-'. */
112 int32_t start_date[3];
113 int32_t stop_date[3];
114 const char *era_name;
115 const char *era_format;
116 const wchar_t *era_wname;
117 const wchar_t *era_wformat;
118 int absolute_direction;
119 /* absolute direction:
120 +1 indicates that year number is higher in the future. (like A.D.)
121 -1 indicates that year number is higher in the past. (like B.C.) */
125 /* LC_CTYPE specific:
126 Hardwired indices for standard wide character translation mappings. */
134 /* LC_CTYPE specific:
135 Access a wide character class with a single character index.
136 _ISCTYPE (c, desc) = iswctype (btowc (c), desc).
137 c must be an `unsigned char'. desc must be a nonzero wctype_t. */
138 #define _ISCTYPE(c, desc) \
139 (((((const uint32_t *) (desc)) - 8)[(c) >> 5] >> ((c) & 0x1f)) & 1)
142 /* For each category declare the variable for the current locale data. */
143 /* XXX _nl_current_LC_CTYPE and _nl_current_LC_COLLATE were exported
144 but where are they used? */
145 #define DEFINE_CATEGORY(category, category_name, items, a) \
146 extern struct locale_data *_nl_current_##category attribute_hidden;
147 #include "categories.def"
148 #undef DEFINE_CATEGORY
150 extern const char *const _nl_category_names[__LC_LAST] attribute_hidden;
151 extern const size_t _nl_category_name_sizes[__LC_LAST] attribute_hidden;
152 extern struct locale_data * *const _nl_current[__LC_LAST] attribute_hidden;
154 /* Name of the standard locales. */
155 extern const char _nl_C_name[] attribute_hidden;
156 extern const char _nl_POSIX_name[] attribute_hidden;
158 /* The standard codeset. */
159 extern const char _nl_C_codeset[] attribute_hidden;
161 /* Return a pointer to the current `struct locale_data' for CATEGORY. */
162 #define _NL_CURRENT_DATA(category) \
163 ((const struct locale_data *) _nl_current_##category)
165 /* Extract the current CATEGORY locale's string for ITEM. */
166 #define _NL_CURRENT(category, item) \
167 (_nl_current_##category->values[_NL_ITEM_INDEX (item)].string)
169 /* Extract the current CATEGORY locale's string for ITEM. */
170 #define _NL_CURRENT_WSTR(category, item) \
171 ((wchar_t *) _nl_current_##category->values[_NL_ITEM_INDEX (item)].wstr)
173 /* Extract the current CATEGORY locale's word for ITEM. */
174 #define _NL_CURRENT_WORD(category, item) \
175 (_nl_current_##category->values[_NL_ITEM_INDEX (item)].word)
177 /* This is used in lc-CATEGORY.c to define _nl_current_CATEGORY. */
178 #define _NL_CURRENT_DEFINE(category) \
179 extern struct locale_data _nl_C_##category attribute_hidden; \
180 struct locale_data *_nl_current_##category = &_nl_C_##category
182 /* Load the locale data for CATEGORY from the file specified by *NAME.
183 If *NAME is "", use environment variables as specified by POSIX,
184 and fill in *NAME with the actual name used. The directories
185 listed in LOCALE_PATH are searched for the locale files. */
186 extern struct locale_data *_nl_find_locale (const char *locale_path,
187 size_t locale_path_len,
188 int category, const char **name);
190 /* Try to load the file described by FILE. */
191 extern void _nl_load_locale (struct loaded_l10nfile *file, int category);
193 /* Free all resource. */
194 extern void _nl_unload_locale (struct locale_data *locale);
196 /* Free the locale and give back all memory if the usage count is one. */
197 extern void _nl_remove_locale (int locale, struct locale_data *data);
200 /* Return `era' entry which corresponds to TP. Used in strftime. */
201 extern struct era_entry *_nl_get_era_entry (const struct tm *tp);
203 /* Return `era' cnt'th entry . Used in strptime. */
204 extern struct era_entry *_nl_select_era_entry (int cnt);
206 /* Return `alt_digit' which corresponds to NUMBER. Used in strftime. */
207 extern const char *_nl_get_alt_digit (unsigned int number);
209 /* Similar, but now for wide characters. */
210 extern const wchar_t *_nl_get_walt_digit (unsigned int number);
212 /* Parse string as alternative digit and return numeric value. */
213 extern int _nl_parse_alt_digit (const char **strp);
215 /* Postload processing. */
216 extern void _nl_postload_ctype (void);
217 extern void _nl_postload_time (void);
220 #endif /* localeinfo.h */