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/* GNU gettext - internationalization aids
Copyright (C) 1996, 1998, 2000-2002, 2006, 2015-2016 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 <http://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;
}
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