projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| c84142e8 | 1 | /* Duplicate handle for selection of locales. |
| a334319f | 2 | Copyright (C) 1997, 2000, 2001, 2002 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 AJ |
16 | You should have received a copy of the GNU Lesser General Public |
| 17 | License along with the GNU C Library; if not, write to the Free | |
| 18 | Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA | |
| 19 | 02111-1307 USA. */ | |
| c84142e8 UD |
20 | |
| 21 | #include <locale.h> | |
| 5107cf1d | 22 | #include <bits/libc-lock.h> |
| c84142e8 | 23 | #include <stdlib.h> |
| 95ed9d84 | 24 | #include <string.h> |
| c84142e8 UD |
25 | |
| 26 | #include <localeinfo.h> | |
| 27 | ||
| 28 | ||
| 29 | /* Lock for protecting global data. */ | |
| ab26a24a | 30 | __libc_lock_define (extern , __libc_setlocale_lock attribute_hidden) |
| c84142e8 UD |
31 | |
| 32 | ||
| 33 | __locale_t | |
| 34 | __duplocale (__locale_t dataset) | |
| 35 | { | |
| 679e4c43 | 36 | /* This static object is returned for newlocale (LC_ALL_MASK, "C"). */ |
| a334319f | 37 | if (dataset == &_nl_C_locobj) |
| 679e4c43 RM |
38 | return dataset; |
| 39 | ||
| c84142e8 | 40 | __locale_t result; |
| 1ce8aaae | 41 | int cnt; |
| a0fc81e1 | 42 | size_t names_len = 0; |
| c84142e8 | 43 | |
| a0fc81e1 RM |
44 | /* Calculate the total space we need to store all the names. */ |
| 45 | for (cnt = 0; cnt < __LC_LAST; ++cnt) | |
| 46 | if (cnt != LC_ALL && dataset->__names[cnt] != _nl_C_name) | |
| 47 | names_len += strlen (dataset->__names[cnt]) + 1; | |
| c84142e8 UD |
48 | |
| 49 | /* Get memory. */ | |
| a0fc81e1 | 50 | result = malloc (sizeof (struct __locale_struct) + names_len); |
| 1ce8aaae | 51 | |
| c84142e8 UD |
52 | if (result != NULL) |
| 53 | { | |
| a0fc81e1 RM |
54 | char *namep = (char *) (result + 1); |
| 55 | ||
| 56 | /* We modify global data (the usage counts). */ | |
| 57 | __libc_lock_lock (__libc_setlocale_lock); | |
| 58 | ||
| 5bef2820 UD |
59 | for (cnt = 0; cnt < __LC_LAST; ++cnt) |
| 60 | if (cnt != LC_ALL) | |
| 61 | { | |
| 62 | result->__locales[cnt] = dataset->__locales[cnt]; | |
| 63 | if (result->__locales[cnt]->usage_count < MAX_USAGE_COUNT) | |
| 64 | ++result->__locales[cnt]->usage_count; | |
| a0fc81e1 RM |
65 | |
| 66 | if (dataset->__names[cnt] == _nl_C_name) | |
| 67 | result->__names[cnt] = _nl_C_name; | |
| 68 | else | |
| 69 | { | |
| 70 | result->__names[cnt] = namep; | |
| 71 | namep = __stpcpy (namep, dataset->__names[cnt]) + 1; | |
| 72 | } | |
| 5bef2820 | 73 | } |
| c84142e8 | 74 | |
| bf418dda UD |
75 | /* Update the special members. */ |
| 76 | result->__ctype_b = dataset->__ctype_b; | |
| 77 | result->__ctype_tolower = dataset->__ctype_tolower; | |
| 78 | result->__ctype_toupper = dataset->__ctype_toupper; | |
| 89f29a07 | 79 | |
| a0fc81e1 RM |
80 | /* It's done. */ |
| 81 | __libc_lock_unlock (__libc_setlocale_lock); | |
| 82 | } | |
| 1fb05e3d UD |
83 | |
| 84 | return result; | |
| c84142e8 | 85 | } |
| 30c14c31 | 86 | weak_alias (__duplocale, duplocale) |