| /* Copyright (C) 1996, 1997 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| Contributed by Ulrich Drepper, <drepper@gnu.ai.mit.edu>. |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Library General Public License as |
| published by the Free Software Foundation; either version 2 of the |
| License, or (at your option) any later version. |
| |
| The GNU C Library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Library General Public License for more details. |
| |
| You should have received a copy of the GNU Library General Public |
| License along with the GNU C Library; see the file COPYING.LIB. If not, |
| write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
| Boston, MA 02111-1307, USA. */ |
| |
| #include <alloca.h> |
| #include <errno.h> |
| #include <nl_types.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <unistd.h> |
| #include <sys/mman.h> |
| |
| #include "catgetsinfo.h" |
| |
| |
| /* Open the catalog and return a descriptor for the catalog. */ |
| nl_catd |
| catopen (const char *cat_name, int flag) |
| { |
| __nl_catd result; |
| const char *env_var; |
| const char *nlspath; |
| |
| result = (__nl_catd) malloc (sizeof (*result)); |
| if (result == NULL) |
| /* We cannot get enough memory. */ |
| return (nl_catd) -1; |
| |
| result->status = closed; |
| |
| result->cat_name = __strdup (cat_name); |
| if (result->cat_name == NULL) |
| { |
| free (result); |
| __set_errno (ENOMEM); |
| return (nl_catd) -1; |
| } |
| |
| if (strchr (cat_name, '/') == NULL) |
| { |
| if (flag == NL_CAT_LOCALE) |
| { |
| env_var = getenv ("LC_ALL"); |
| if (env_var == NULL) |
| { |
| env_var = getenv ("LC_MESSAGES"); |
| if (env_var == NULL) |
| { |
| env_var = getenv ("LANG"); |
| if (env_var == NULL) |
| env_var = "C"; |
| } |
| } |
| } |
| else |
| { |
| env_var = getenv ("LANG"); |
| if (env_var == NULL) |
| env_var = "C"; |
| } |
| |
| result->env_var = __strdup (env_var); |
| if (result->env_var == NULL) |
| { |
| free ((void *) result->cat_name); |
| free ((void *) result); |
| __set_errno (ENOMEM); |
| return (nl_catd) -1; |
| } |
| |
| nlspath = __secure_getenv ("NLSPATH"); |
| if (nlspath != NULL && *nlspath != '\0') |
| { |
| /* Append the system dependent directory. */ |
| size_t len = strlen (nlspath) + 1 + sizeof NLSPATH; |
| char *tmp = alloca (len); |
| |
| __stpcpy (__stpcpy (__stpcpy (tmp, nlspath), ":"), NLSPATH); |
| nlspath = tmp; |
| } |
| else |
| nlspath = NLSPATH; |
| |
| result->nlspath = __strdup (NLSPATH); |
| if (result->nlspath == NULL) |
| { |
| free ((void *) result->cat_name); |
| free ((void *) result->env_var); |
| free ((void *) result); |
| __set_errno (ENOMEM); |
| return (nl_catd) -1; |
| } |
| } |
| else |
| { |
| result->env_var = NULL; |
| result->nlspath = NULL; |
| } |
| |
| __libc_lock_init (result->lock); |
| |
| return (nl_catd) result; |
| } |
| |
| |
| /* Return message from message catalog. */ |
| char * |
| catgets (nl_catd catalog_desc, int set, int message, const char *string) |
| { |
| __nl_catd catalog; |
| size_t idx; |
| size_t cnt; |
| |
| /* Be generous if catalog which failed to be open is used. */ |
| if (catalog_desc == (nl_catd) -1 || ++set <= 0 || message < 0) |
| return (char *) string; |
| |
| catalog = (__nl_catd) catalog_desc; |
| |
| if (catalog->status == closed) |
| __open_catalog (catalog); |
| |
| if (catalog->status == nonexisting) |
| { |
| __set_errno (EBADF); |
| return (char *) string; |
| } |
| |
| idx = ((set * message) % catalog->plane_size) * 3; |
| cnt = 0; |
| do |
| { |
| if (catalog->name_ptr[idx + 0] == (u_int32_t) set |
| && catalog->name_ptr[idx + 1] == (u_int32_t) message) |
| return (char *) &catalog->strings[catalog->name_ptr[idx + 2]]; |
| |
| idx += catalog->plane_size * 3; |
| } |
| while (++cnt < catalog->plane_depth); |
| |
| __set_errno (ENOMSG); |
| return (char *) string; |
| } |
| |
| |
| /* Return resources used for loaded message catalog. */ |
| int |
| catclose (nl_catd catalog_desc) |
| { |
| __nl_catd catalog; |
| |
| catalog = (__nl_catd) catalog_desc; |
| |
| if (catalog->status == mmapped) |
| __munmap ((void *) catalog->file_ptr, catalog->file_size); |
| else if (catalog->status == malloced) |
| free ((void *) catalog->file_ptr); |
| else if (catalog->status != closed && catalog->status != nonexisting) |
| { |
| __set_errno (EBADF); |
| return -1; |
| } |
| |
| if (catalog->nlspath) |
| free ((void *) catalog->nlspath); |
| if (catalog->env_var) |
| free ((void *) catalog->env_var); |
| free ((void *) catalog); |
| |
| return 0; |
| } |