*
* Copyright (C) 2001 Manuel Novoa III <mjn3@codepoet.org>
*
- * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
+ * Licensed under GPLv2 or later, see file LICENSE in this source tree.
*/
-
#include "libbb.h"
-char *bb_simplify_path(const char *path)
+char* FAST_FUNC bb_simplify_abs_path_inplace(char *start)
{
- char *s, *start, *p;
+ char *s, *p;
- if (path[0] == '/')
- start = 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 */
+ if (*s == '/') { /* skip duplicate (or initial) slash */
continue;
- } else if (*s == '.') {
- if (s[1] == '/' || s[1] == 0) { /* remove extra '.' */
+ }
+ if (*s == '.') {
+ if (s[1] == '/' || !s[1]) { /* remove extra '.' */
continue;
- } else if ((s[1] == '.') && (s[2] == '/' || s[2] == 0)) {
+ }
+ if ((s[1] == '.') && (s[2] == '/' || !s[2])) {
++s;
if (p > start) {
- while (*--p != '/'); /* omit previous dir */
+ while (*--p != '/') /* omit previous dir */
+ continue;
}
continue;
}
*++p = *s;
} while (*++s);
- if ((p == start) || (*p != '/')) { /* not a trailing slash */
- ++p; /* so keep last character */
+ if ((p == start) || (*p != '/')) { /* not a trailing slash */
+ ++p; /* so keep last character */
+ }
+ *p = '\0';
+ return p;
+}
+
+char* FAST_FUNC bb_simplify_path(const char *path)
+{
+ char *s, *p;
+
+ if (path[0] == '/')
+ s = xstrdup(path);
+ else {
+ p = xrealloc_getcwd_or_warn(NULL);
+ s = concat_path_file(p, path);
+ free(p);
}
- *p = 0;
- return start;
+ bb_simplify_abs_path_inplace(s);
+ return s;
}