1 files changed, 43 insertions, 0 deletions
diff --git a/libc/string/dirname.c b/libc/string/dirname.c
new file mode 100644
index 000000000..a6242e238
--- /dev/null
+++ b/libc/string/dirname.c
@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2002     Manuel Novoa III
+ * Copyright (C) 2000-2005 Erik Andersen <andersen@uclibc.org>
+ *
+ * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
+ */
+
+#include "_string.h"
+
+char *dirname(char *path)
+{
+	static const char null_or_empty_or_noslash[] = ".";
+	register char *s;
+	register char *last;
+	char *first;
+
+	last = s = path;
+
+	if (s != NULL) {
+
+	LOOP:
+		while (*s && (*s != '/')) ++s;
+		first = s;
+		while (*s == '/') ++s;
+		if (*s) {
+			last = first;
+			goto LOOP;
+		}
+
+		if (last == path) {
+			if (*last != '/') {
+				goto DOT;
+			}
+			if ((*++last == '/') && (last[1] == 0)) {
+				++last;
+			}
+		}
+		*last = 0;
+		return path;
+	}
+ DOT:
+	return (char *) null_or_empty_or_noslash;
+}