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sourceware.org Git - glibc.git/blob - locale/localeinfo.h
1 /* Declarations for internal libc locale interfaces
2 Copyright (C) 1995, 96, 97, 98, 99,2000,2001 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 #define DEFINE_CATEGORY(category, category_name, items, a) \
144 extern struct locale_data *_nl_current_##category;
145 #include "categories.def"
146 #undef DEFINE_CATEGORY
148 extern const char *const _nl_category_names
[__LC_LAST
];
149 extern const size_t _nl_category_name_sizes
[__LC_LAST
];
150 extern struct locale_data
* *const _nl_current
[__LC_LAST
];
152 /* Name of the standard locales. */
153 extern const char _nl_C_name
[];
154 extern const char _nl_POSIX_name
[];
156 /* The standard codeset. */
157 extern const char _nl_C_codeset
[];
159 /* Extract the current CATEGORY locale's string for ITEM. */
160 #define _NL_CURRENT(category, item) \
161 (_nl_current_##category->values[_NL_ITEM_INDEX (item)].string)
163 /* Extract the current CATEGORY locale's string for ITEM. */
164 #define _NL_CURRENT_WSTR(category, item) \
165 ((wchar_t *) (_nl_current_##category->values[_NL_ITEM_INDEX (item)].wstr))
167 /* Extract the current CATEGORY locale's word for ITEM. */
168 #define _NL_CURRENT_WORD(category, item) \
169 (_nl_current_##category->values[_NL_ITEM_INDEX (item)].word)
171 /* This is used in lc-CATEGORY.c to define _nl_current_CATEGORY. */
172 #define _NL_CURRENT_DEFINE(category) \
173 extern struct locale_data _nl_C_##category; \
174 struct locale_data *_nl_current_##category = &_nl_C_##category
176 /* Load the locale data for CATEGORY from the file specified by *NAME.
177 If *NAME is "", use environment variables as specified by POSIX,
178 and fill in *NAME with the actual name used. The directories
179 listed in LOCALE_PATH are searched for the locale files. */
180 extern struct locale_data
*_nl_find_locale (const char *locale_path
,
181 size_t locale_path_len
,
182 int category
, const char **name
);
184 /* Try to load the file described by FILE. */
185 extern void _nl_load_locale (struct loaded_l10nfile
*file
, int category
);
187 /* Free all resource. */
188 extern void _nl_unload_locale (struct locale_data
*locale
);
190 /* Free the locale and give back all memory if the usage count is one. */
191 extern void _nl_remove_locale (int locale
, struct locale_data
*data
);
194 /* Return `era' entry which corresponds to TP. Used in strftime. */
195 extern struct era_entry
*_nl_get_era_entry (const struct tm
*tp
);
197 /* Return `era' cnt'th entry . Used in strptime. */
198 extern struct era_entry
*_nl_select_era_entry (int cnt
);
200 /* Return `alt_digit' which corresponds to NUMBER. Used in strftime. */
201 extern const char *_nl_get_alt_digit (unsigned int number
);
203 /* Similar, but now for wide characters. */
204 extern const wchar_t *_nl_get_walt_digit (unsigned int number
);
206 /* Parse string as alternative digit and return numeric value. */
207 extern int _nl_parse_alt_digit (const char **strp
);
209 /* Postload processing. */
210 extern void _nl_postload_ctype (void);
211 extern void _nl_postload_time (void);
214 #endif /* localeinfo.h */
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