1 files changed, 51 insertions, 0 deletions
diff --git a/lib/libc/gen/basename.c b/lib/libc/gen/basename.c
new file mode 100644
index 000000000000..d0ba1bd9229c
--- /dev/null
+++ b/lib/libc/gen/basename.c
@@ -0,0 +1,51 @@
+/*-
+ * Copyright (c) 2015-2016 Nuxi, https://nuxi.nl/
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <libgen.h>
+#include <string.h>
+
+char *
+(basename)(char *path)
+{
+	char *ptr;
+
+	/*
+	 * If path is a null pointer or points to an empty string,
+	 * basename() shall return a pointer to the string ".".
+	 */
+	if (path == NULL || *path == '\0')
+		return (__DECONST(char *, "."));
+
+	/* Find end of last pathname component and null terminate it. */
+	ptr = path + strlen(path);
+	while (ptr > path + 1 && *(ptr - 1) == '/')
+		--ptr;
+	*ptr-- = '\0';
+
+	/* Find beginning of last pathname component. */
+	while (ptr > path && *(ptr - 1) != '/')
+		--ptr;
+	return (ptr);
+}