Add tests for recent getopt changes.
[glibc.git] / catgets / catgets.c
blob9fd01158061959d5c71802ac7a43f2ecd5047282
1 /* Copyright (C) 1996-2000, 2001, 2002 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3 Contributed by Ulrich Drepper, <drepper@gnu.org>.
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
18 02111-1307 USA. */
20 #include <alloca.h>
21 #include <errno.h>
22 #include <locale.h>
23 #include <nl_types.h>
24 #include <stdlib.h>
25 #include <string.h>
26 #include <unistd.h>
27 #include <sys/mman.h>
29 #include "catgetsinfo.h"
32 /* Open the catalog and return a descriptor for the catalog. */
33 nl_catd
34 catopen (const char *cat_name, int flag)
36 __nl_catd result;
37 const char *env_var = NULL;
38 const char *nlspath = NULL;
40 if (strchr (cat_name, '/') == NULL)
42 if (flag == NL_CAT_LOCALE)
43 /* Use the current locale setting for LC_MESSAGES. */
44 env_var = setlocale (LC_MESSAGES, NULL);
45 else
46 /* Use the LANG environment variable. */
47 env_var = getenv ("LANG");
49 if (env_var == NULL || *env_var == '\0'
50 || (__libc_enable_secure && strchr (env_var, '/') != NULL))
51 env_var = "C";
53 nlspath = getenv ("NLSPATH");
54 if (nlspath != NULL && *nlspath != '\0')
56 /* Append the system dependent directory. */
57 size_t len = strlen (nlspath) + 1 + sizeof NLSPATH;
58 char *tmp = alloca (len);
60 __stpcpy (__stpcpy (__stpcpy (tmp, nlspath), ":"), NLSPATH);
61 nlspath = tmp;
63 else
64 nlspath = NLSPATH;
67 result = (__nl_catd) malloc (sizeof (*result));
68 if (result == NULL)
69 /* We cannot get enough memory. */
70 return (nl_catd) -1;
72 if (__open_catalog (cat_name, nlspath, env_var, result) != 0)
74 /* Couldn't open the file. */
75 free ((void *) result);
76 return (nl_catd) -1;
79 return (nl_catd) result;
83 /* Return message from message catalog. */
84 char *
85 catgets (nl_catd catalog_desc, int set, int message, const char *string)
87 __nl_catd catalog;
88 size_t idx;
89 size_t cnt;
91 /* Be generous if catalog which failed to be open is used. */
92 if (catalog_desc == (nl_catd) -1 || ++set <= 0 || message < 0)
93 return (char *) string;
95 catalog = (__nl_catd) catalog_desc;
97 idx = ((set * message) % catalog->plane_size) * 3;
98 cnt = 0;
101 if (catalog->name_ptr[idx + 0] == (u_int32_t) set
102 && catalog->name_ptr[idx + 1] == (u_int32_t) message)
103 return (char *) &catalog->strings[catalog->name_ptr[idx + 2]];
105 idx += catalog->plane_size * 3;
107 while (++cnt < catalog->plane_depth);
109 __set_errno (ENOMSG);
110 return (char *) string;
114 /* Return resources used for loaded message catalog. */
116 catclose (nl_catd catalog_desc)
118 __nl_catd catalog;
120 /* Be generous if catalog which failed to be open is used. */
121 if (catalog_desc == (nl_catd) -1)
123 __set_errno (EBADF);
124 return -1;
127 catalog = (__nl_catd) catalog_desc;
129 #ifdef _POSIX_MAPPED_FILES
130 if (catalog->status == mmapped)
131 __munmap ((void *) catalog->file_ptr, catalog->file_size);
132 else
133 #endif /* _POSIX_MAPPED_FILES */
134 if (catalog->status == malloced)
135 free ((void *) catalog->file_ptr);
136 else
138 __set_errno (EBADF);
139 return -1;
142 free ((void *) catalog);
144 return 0;