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Diffstat (limited to 'i/pc104/initrd/conf/busybox/libbb/simplify_path.c')
-rw-r--r--i/pc104/initrd/conf/busybox/libbb/simplify_path.c50
1 files changed, 50 insertions, 0 deletions
diff --git a/i/pc104/initrd/conf/busybox/libbb/simplify_path.c b/i/pc104/initrd/conf/busybox/libbb/simplify_path.c
new file mode 100644
index 0000000..7e68e39
--- /dev/null
+++ b/i/pc104/initrd/conf/busybox/libbb/simplify_path.c
@@ -0,0 +1,50 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * bb_simplify_path implementation for busybox
+ *
+ * Copyright (C) 2001 Manuel Novoa III <mjn3@codepoet.org>
+ *
+ * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
+ */
+
+#include "libbb.h"
+
+char *bb_simplify_path(const char *path)
+{
+ char *s, *start, *p;
+
+ if (path[0] == '/')
+ start = xstrdup(path);
+ else {
+ s = xrealloc_getcwd_or_warn(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;
+}