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c84142e8 UD |
1 | /* User interface for extracting locale-dependent parameters. |
2 | Copyright (C) 1995, 1996, 1997 Free Software Foundation, Inc. | |
3 | This file is part of the GNU C Library. | |
933e73fa | 4 | |
c84142e8 UD |
5 | The GNU C Library is free software; you can redistribute it and/or |
6 | modify it under the terms of the GNU Library General Public License as | |
7 | published by the Free Software Foundation; either version 2 of the | |
8 | License, or (at your option) any later version. | |
933e73fa | 9 | |
c84142e8 UD |
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 | Library General Public License for more details. | |
933e73fa | 14 | |
c84142e8 UD |
15 | You should have received a copy of the GNU Library General Public |
16 | License along with the GNU C Library; see the file COPYING.LIB. If not, | |
17 | write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
18 | Boston, MA 02111-1307, USA. */ | |
933e73fa RM |
19 | |
20 | #include <langinfo.h> | |
d8cc5f0c RM |
21 | #include <errno.h> |
22 | #include <stddef.h> | |
23 | #include "localeinfo.h" | |
933e73fa RM |
24 | |
25 | /* This array duplicates `_nl_current' defined in setlocale.c; but since | |
26 | the references here are not weak references, this guarantees that the | |
27 | data for all the categories will be linked in. */ | |
28 | ||
c84142e8 | 29 | static struct locale_data * *const nldata[] = |
933e73fa RM |
30 | { |
31 | #define DEFINE_CATEGORY(category, category_name, items, a, b, c, d) \ | |
32 | [category] = &_nl_current_##category, | |
33 | #include "categories.def" | |
34 | #undef DEFINE_CATEGORY | |
35 | }; | |
36 | ||
37 | ||
38 | /* Return a string with the data for locale-dependent parameter ITEM. */ | |
39 | ||
40 | char * | |
41 | nl_langinfo (item) | |
42 | nl_item item; | |
43 | { | |
44 | int category = _NL_ITEM_CATEGORY (item); | |
45 | unsigned int index = _NL_ITEM_INDEX (item); | |
46 | const struct locale_data *data; | |
47 | ||
48 | if (category < 0 || category >= LC_ALL) | |
49 | { | |
50 | /* Bogus category: bogus item. */ | |
c4029823 | 51 | __set_errno (EINVAL); |
933e73fa RM |
52 | return NULL; |
53 | } | |
54 | ||
d8cc5f0c | 55 | data = *nldata[category]; |
933e73fa RM |
56 | |
57 | if (index >= data->nstrings) | |
58 | { | |
59 | /* Bogus index for this category: bogus item. */ | |
c4029823 | 60 | __set_errno (EINVAL); |
933e73fa RM |
61 | return NULL; |
62 | } | |
63 | ||
64 | /* Return the string for the specified item. */ | |
ffcf9634 | 65 | return (char *) data->values[index].string; |
933e73fa | 66 | } |