]>
Commit | Line | Data |
---|---|---|
c84142e8 | 1 | /* Duplicate handle for selection of locales. |
d4697bc9 | 2 | Copyright (C) 1997-2014 Free Software Foundation, Inc. |
c84142e8 UD |
3 | This file is part of the GNU C Library. |
4 | Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997. | |
5 | ||
6 | The GNU C Library is free software; you can redistribute it and/or | |
41bdb6e2 AJ |
7 | modify it under the terms of the GNU Lesser General Public |
8 | License as published by the Free Software Foundation; either | |
9 | version 2.1 of the License, or (at your option) any later version. | |
c84142e8 UD |
10 | |
11 | The GNU C Library is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
41bdb6e2 | 14 | Lesser General Public License for more details. |
c84142e8 | 15 | |
41bdb6e2 | 16 | You should have received a copy of the GNU Lesser General Public |
59ba27a6 PE |
17 | License along with the GNU C Library; if not, see |
18 | <http://www.gnu.org/licenses/>. */ | |
c84142e8 UD |
19 | |
20 | #include <locale.h> | |
5107cf1d | 21 | #include <bits/libc-lock.h> |
c84142e8 | 22 | #include <stdlib.h> |
95ed9d84 | 23 | #include <string.h> |
c84142e8 UD |
24 | |
25 | #include <localeinfo.h> | |
26 | ||
27 | ||
28 | /* Lock for protecting global data. */ | |
9a69db29 | 29 | __libc_rwlock_define (extern , __libc_setlocale_lock attribute_hidden) |
c84142e8 UD |
30 | |
31 | ||
32 | __locale_t | |
33 | __duplocale (__locale_t dataset) | |
34 | { | |
679e4c43 | 35 | /* This static object is returned for newlocale (LC_ALL_MASK, "C"). */ |
4b5b009c | 36 | if (dataset == _nl_C_locobj_ptr) |
679e4c43 RM |
37 | return dataset; |
38 | ||
74432447 UD |
39 | /* Handle a special value. */ |
40 | if (dataset == LC_GLOBAL_LOCALE) | |
41 | dataset = &_nl_global_locale; | |
42 | ||
c84142e8 | 43 | __locale_t result; |
1ce8aaae | 44 | int cnt; |
a0fc81e1 | 45 | size_t names_len = 0; |
c84142e8 | 46 | |
a0fc81e1 RM |
47 | /* Calculate the total space we need to store all the names. */ |
48 | for (cnt = 0; cnt < __LC_LAST; ++cnt) | |
49 | if (cnt != LC_ALL && dataset->__names[cnt] != _nl_C_name) | |
50 | names_len += strlen (dataset->__names[cnt]) + 1; | |
c84142e8 UD |
51 | |
52 | /* Get memory. */ | |
a0fc81e1 | 53 | result = malloc (sizeof (struct __locale_struct) + names_len); |
1ce8aaae | 54 | |
c84142e8 UD |
55 | if (result != NULL) |
56 | { | |
a0fc81e1 RM |
57 | char *namep = (char *) (result + 1); |
58 | ||
59 | /* We modify global data (the usage counts). */ | |
9a69db29 | 60 | __libc_rwlock_wrlock (__libc_setlocale_lock); |
a0fc81e1 | 61 | |
5bef2820 UD |
62 | for (cnt = 0; cnt < __LC_LAST; ++cnt) |
63 | if (cnt != LC_ALL) | |
64 | { | |
65 | result->__locales[cnt] = dataset->__locales[cnt]; | |
66 | if (result->__locales[cnt]->usage_count < MAX_USAGE_COUNT) | |
67 | ++result->__locales[cnt]->usage_count; | |
a0fc81e1 RM |
68 | |
69 | if (dataset->__names[cnt] == _nl_C_name) | |
70 | result->__names[cnt] = _nl_C_name; | |
71 | else | |
72 | { | |
73 | result->__names[cnt] = namep; | |
74 | namep = __stpcpy (namep, dataset->__names[cnt]) + 1; | |
75 | } | |
5bef2820 | 76 | } |
c84142e8 | 77 | |
bf418dda UD |
78 | /* Update the special members. */ |
79 | result->__ctype_b = dataset->__ctype_b; | |
80 | result->__ctype_tolower = dataset->__ctype_tolower; | |
81 | result->__ctype_toupper = dataset->__ctype_toupper; | |
89f29a07 | 82 | |
a0fc81e1 | 83 | /* It's done. */ |
9a69db29 | 84 | __libc_rwlock_unlock (__libc_setlocale_lock); |
a0fc81e1 | 85 | } |
1fb05e3d UD |
86 | |
87 | return result; | |
c84142e8 | 88 | } |
30c14c31 | 89 | weak_alias (__duplocale, duplocale) |