1/* GNU gettext - internationalization aids 2 Copyright (C) 1996, 1998, 2000-2002 Free Software Foundation, Inc. 3 4 This file was written by Peter Miller <millerp@canb.auug.org.au> 5 6 This program is free software; you can redistribute it and/or modify 7 it under the terms of the GNU General Public License as published by 8 the Free Software Foundation; either version 2, or (at your option) 9 any later version. 10 11 This program is distributed in the hope that it will be useful, 12 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 GNU General Public License for more details. 15 16 You should have received a copy of the GNU General Public License 17 along with this program; if not, write to the Free Software Foundation, 18 Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ 19 20 21#ifdef HAVE_CONFIG_H 22#include "config.h" 23#endif 24 25/* Specification. */ 26#include "dir-list.h" 27 28#include <stddef.h> 29#include <stdlib.h> 30 31#include "str-list.h" 32 33static string_list_ty *directory /* = NULL */; 34 35 36/* Append a directory to the end of the list of directories. */ 37void 38dir_list_append (const char *s) 39{ 40 if (directory == NULL) 41 directory = string_list_alloc (); 42 string_list_append_unique (directory, s); 43} 44 45 46/* Return the nth directory, or NULL of n is out of range. */ 47const char * 48dir_list_nth (int n) 49{ 50 /* The default value of the list consists of the single directory ".". */ 51 if (directory == NULL) 52 dir_list_append ("."); 53 54 if (n < 0 || n >= directory->nitems) 55 return NULL; 56 return directory->item[n]; 57} 58 59 60/* Return the current list of directories, for later use with dir_list_restore. 61 Reset the list to empty. */ 62void * 63dir_list_save_reset () 64{ 65 void *saved_value = directory; 66 67 directory = NULL; 68 return saved_value; 69} 70 71 72/* Restore a previously saved list of directories. */ 73void 74dir_list_restore (void *saved_value) 75{ 76 /* Don't free the contained strings, because they may have been returned 77 by dir_list_nth and may still be in use. */ 78 if (directory != NULL) 79 { 80 if (directory->item != NULL) 81 free (directory->item); 82 free (directory); 83 } 84 85 directory = saved_value; 86} 87