[libc-commits] [libc] [libc] Implement basename and dirname in libgen.h (PR #204554)

[Jeff Bailey via libc-commits]

================
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+///
+/// \file
+/// Implementation of basename.
+///
+//===----------------------------------------------------------------------===//
+
+#include "src/libgen/basename.h"
+#include "src/__support/CPP/string_view.h"
+#include "src/__support/common.h"
+#include "src/__support/macros/config.h"
+
+namespace LIBC_NAMESPACE_DECL {
+
+LLVM_LIBC_FUNCTION(char *, basename, (char *path)) {
+  if (path == nullptr || path[0] == '\0') {
+    static char dot[] = ".";
----------------
kaladron wrote:

Ok, this should be done.  It took a moment to figure out the death tests because I've only used them once before.  I'll let it run through all the configs and check again in the morning.

https://github.com/llvm/llvm-project/pull/204554