1 /* vi: set sw=4 ts=4: */
3 * bb_simplify_path implementation for busybox
5 * Copyright (C) 2001 Manuel Novoa III <mjn3@codepoet.org>
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
26 char *bb_simplify_path(const char *path)
31 start = bb_xstrdup(path);
34 start = concat_path_file(s, path);
41 if (*s == '/') { /* skip duplicate (or initial) slash */
43 } else if (*s == '.') {
44 if (s[1] == '/' || s[1] == 0) { /* remove extra '.' */
46 } else if ((s[1] == '.') && (s[2] == '/' || s[2] == 0)) {
49 while (*--p != '/'); /* omit previous dir */
58 if ((p == start) || (*p != '/')) { /* not a trailing slash */
59 ++p; /* so keep last character */