1 /* Copyright (C) 1996-2000, 2001 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
29 #include "catgetsinfo.h"
32 /* Open the catalog and return a descriptor for the catalog. */
34 catopen (const char *cat_name, int flag)
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);
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))
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);
67 result = (__nl_catd) malloc (sizeof (*result));
69 /* We cannot get enough memory. */
72 if (__open_catalog (cat_name, nlspath, env_var, result) != 0)
73 /* Couldn't open the file. */
76 return (nl_catd) result;
80 /* Return message from message catalog. */
82 catgets (nl_catd catalog_desc, int set, int message, const char *string)
88 /* Be generous if catalog which failed to be open is used. */
89 if (catalog_desc == (nl_catd) -1 || ++set <= 0 || message < 0)
90 return (char *) string;
92 catalog = (__nl_catd) catalog_desc;
94 idx = ((set * message) % catalog->plane_size) * 3;
98 if (catalog->name_ptr[idx + 0] == (u_int32_t) set
99 && catalog->name_ptr[idx + 1] == (u_int32_t) message)
100 return (char *) &catalog->strings[catalog->name_ptr[idx + 2]];
102 idx += catalog->plane_size * 3;
104 while (++cnt < catalog->plane_depth);
106 __set_errno (ENOMSG);
107 return (char *) string;
111 /* Return resources used for loaded message catalog. */
113 catclose (nl_catd catalog_desc)
117 /* Be generous if catalog which failed to be open is used. */
118 if (catalog_desc == (nl_catd) -1)
124 catalog = (__nl_catd) catalog_desc;
126 #ifdef _POSIX_MAPPED_FILES
127 if (catalog->status == mmapped)
128 __munmap ((void *) catalog->file_ptr, catalog->file_size);
130 #endif /* _POSIX_MAPPED_FILES */
131 if (catalog->status == malloced)
132 free ((void *) catalog->file_ptr);
139 free ((void *) catalog);