| /* GNU gettext - internationalization aids |
| Copyright (C) 1996, 1998, 2000-2002, 2006 Free Software Foundation, Inc. |
| |
| This file was written by Peter Miller <millerp@canb.auug.org.au> |
| |
| This program is free software: you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 3 of the License, or |
| (at your option) any later version. |
| |
| This program 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 General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program. If not, see <https://www.gnu.org/licenses/>. */ |
| |
| |
| #ifdef HAVE_CONFIG_H |
| #include "config.h" |
| #endif |
| |
| /* Specification. */ |
| #include "dir-list.h" |
| |
| #include <stddef.h> |
| #include <stdlib.h> |
| |
| #include "str-list.h" |
| |
| static string_list_ty *directory /* = NULL */; |
| |
| |
| /* Append a directory to the end of the list of directories. */ |
| void |
| dir_list_append (const char *s) |
| { |
| if (directory == NULL) |
| directory = string_list_alloc (); |
| string_list_append_unique (directory, s); |
| } |
| |
| |
| /* Return the nth directory, or NULL of n is out of range. */ |
| const char * |
| dir_list_nth (int n) |
| { |
| /* The default value of the list consists of the single directory ".". */ |
| if (directory == NULL) |
| dir_list_append ("."); |
| |
| if (n < 0 || n >= directory->nitems) |
| return NULL; |
| return directory->item[n]; |
| } |
| |
| |
| /* Return the current list of directories, for later use with dir_list_restore. |
| Reset the list to empty. */ |
| void * |
| dir_list_save_reset () |
| { |
| void *saved_value = directory; |
| |
| directory = NULL; |
| return saved_value; |
| } |
| |
| |
| /* Restore a previously saved list of directories. */ |
| void |
| dir_list_restore (void *saved_value) |
| { |
| /* Don't free the contained strings, because they may have been returned |
| by dir_list_nth and may still be in use. */ |
| if (directory != NULL) |
| { |
| if (directory->item != NULL) |
| free (directory->item); |
| free (directory); |
| } |
| |
| directory = (string_list_ty *) saved_value; |
| } |