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author | Andreas Baumann <mail@andreasbaumann.cc> | 2015-01-03 12:04:58 +0100 |
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committer | Andreas Baumann <mail@andreasbaumann.cc> | 2015-01-03 12:04:58 +0100 |
commit | 008d0be72b2f160382c6e880765e96b64a050c65 (patch) | |
tree | 36f48a98a3815a408e2ce1693dd182af90f80305 /release/src/router/busybox/libbb/simplify_path.c | |
parent | 611becfb8726c60cb060368541ad98191d4532f5 (diff) | |
download | tomato-008d0be72b2f160382c6e880765e96b64a050c65.tar.gz tomato-008d0be72b2f160382c6e880765e96b64a050c65.tar.bz2 |
imported original firmware WRT54GL_v4.30.11_11_US
Diffstat (limited to 'release/src/router/busybox/libbb/simplify_path.c')
-rw-r--r-- | release/src/router/busybox/libbb/simplify_path.c | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/release/src/router/busybox/libbb/simplify_path.c b/release/src/router/busybox/libbb/simplify_path.c new file mode 100644 index 00000000..743133cd --- /dev/null +++ b/release/src/router/busybox/libbb/simplify_path.c @@ -0,0 +1,64 @@ +/* vi: set sw=4 ts=4: */ +/* + * bb_simplify_path implementation for busybox + * + * Copyright (C) 2001 Manuel Novoa III <mjn3@codepoet.org> + * + * 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 2 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, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ + +#include <stdlib.h> +#include "libbb.h" + +char *bb_simplify_path(const char *path) +{ + char *s, *start, *p; + + if (path[0] == '/') + start = bb_xstrdup(path); + else { + s = xgetcwd(NULL); + start = concat_path_file(s, path); + free(s); + } + p = s = start; + + do { + if (*p == '/') { + if (*s == '/') { /* skip duplicate (or initial) slash */ + continue; + } else if (*s == '.') { + if (s[1] == '/' || s[1] == 0) { /* remove extra '.' */ + continue; + } else if ((s[1] == '.') && (s[2] == '/' || s[2] == 0)) { + ++s; + if (p > start) { + while (*--p != '/'); /* omit previous dir */ + } + continue; + } + } + } + *++p = *s; + } while (*++s); + + if ((p == start) || (*p != '/')) { /* not a trailing slash */ + ++p; /* so keep last character */ + } + *p = 0; + + return start; +} |