1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
|
/* Copyright (C) 1996 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, 1996.
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 <locale.h>
#include <stdlib.h>
#include <string.h>
#include "localeinfo.h"
/* Constant data defined in setlocale.c. */
extern const struct locale_data *const _nl_C[];
static inline char *
copy (const char *string)
{
size_t len;
char *new;
len = strlen (string) + 1;
new = (char *) malloc (len);
return new != NULL ? memcpy (new, string, len) : NULL;
}
/* For each category we keep a list of records for the locale files
which are somehow addressed. */
static struct loaded_l10nfile *locale_file_list[LC_ALL];
const struct locale_data *
_nl_find_locale (const char *locale_path, size_t locale_path_len,
int category, char **name)
{
int mask;
/* Name of the locale for this category. */
char *loc_name;
const char *language;
const char *modifier;
const char *territory;
const char *codeset;
const char *normalized_codeset;
const char *special;
const char *sponsor;
const char *revision;
struct loaded_l10nfile *locale_file;
if ((*name)[0] == '\0')
{
/* The user decides which locale to use by setting environment
variables. */
*name = getenv ("LC_ALL");
if (*name == NULL || (*name)[0] == '\0')
*name = getenv (_nl_category_names[category]);
if (*name == NULL || (*name)[0] == '\0')
*name = getenv ("LANG");
if (*name == NULL || (*name)[0] == '\0')
*name = (char *) _nl_C_name;
}
if (strcmp (*name, _nl_C_name) == 0 || strcmp (*name, "POSIX") == 0)
{
/* We need not load anything. The needed data is contained in
the library itself. */
*name = (char *) _nl_C_name;
return _nl_C[category];
}
/* We really have to load some data. First see whether the name is
an alias. Please note that this makes it impossible to have "C"
or "POSIX" as aliases. */
loc_name = _nl_expand_alias (*name);
if (loc_name == NULL)
/* It is no alias. */
loc_name = *name;
/* Make a writable copy of the locale name. */
loc_name = copy (loc_name);
/* LOCALE can consist of up to four recognized parts for the XPG syntax:
language[_territory[.codeset]][@modifier]
and six parts for the CEN syntax:
language[_territory][+audience][+special][,sponsor][_revision]
Beside the first all of them are allowed to be missing. If the
full specified locale is not found, the less specific one are
looked for. The various part will be stripped of according to
the following order:
(1) revision
(2) sponsor
(3) special
(4) codeset
(5) normalized codeset
(6) territory
(7) audience/modifier
*/
mask = _nl_explode_name (loc_name, &language, &modifier, &territory,
&codeset, &normalized_codeset, &special,
&sponsor, &revision);
/* If exactly this locale was already asked for we have an entry with
the complete name. */
locale_file = _nl_make_l10nflist (&locale_file_list[category],
locale_path, locale_path_len, mask,
language, territory, codeset,
normalized_codeset, modifier, special,
sponsor, revision,
_nl_category_names[category], 0);
if (locale_file == NULL)
{
/* Find status record for addressed locale file. We have to search
through all directories in the locale path. */
locale_file = _nl_make_l10nflist (&locale_file_list[category],
locale_path, locale_path_len, mask,
language, territory, codeset,
normalized_codeset, modifier, special,
sponsor, revision,
_nl_category_names[category], 1);
if (locale_file == NULL)
/* This means we are out of core. */
return NULL;
}
else
/* If the addressed locale is already available it should be freed.
If we would not do this switching back and force between two
locales would slowly eat up all memory.*/
free (loc_name);
if (locale_file->decided == 0)
_nl_load_locale (locale_file, category);
if (locale_file->data == NULL)
{
int cnt;
for (cnt = 0; locale_file->successor[cnt] != NULL; ++cnt)
{
if (locale_file->successor[cnt]->decided == 0)
_nl_load_locale (locale_file->successor[cnt], category);
if (locale_file->successor[cnt]->data != NULL)
break;
}
/* Move the entry we found (or NULL) to the first place of
successors. */
locale_file->successor[0] = locale_file->successor[cnt];
locale_file = locale_file->successor[cnt];
}
if (locale_file == NULL)
return NULL;
/* Determine the locale name for which loading succeeded. This
information comes from the file name. The form is
<path>/<locale>/LC_foo. We must extract this <locale> part. */
if (((struct locale_data *) locale_file->data)->name == NULL)
{
char *newp, *cp, *endp;
endp = strrchr (locale_file->filename, '/');
cp = endp - 1;
while (cp[-1] != '/')
--cp;
newp = (char *) malloc (endp - cp + 1);
if (newp == NULL)
return NULL;
memcpy (newp, cp, endp - cp);
newp[endp - cp] = '\0';
((struct locale_data *) locale_file->data)->name = newp;
}
*name = (char *) ((struct locale_data *) locale_file->data)->name;
return (struct locale_data *) locale_file->data;
}
|
