1 files changed, 88 insertions, 0 deletions
diff --git a/StdLib/PosixLib/Gen/dirname.c b/StdLib/PosixLib/Gen/dirname.c
new file mode 100644
index 0000000000..7fb4d39a0f
--- /dev/null
+++ b/StdLib/PosixLib/Gen/dirname.c
@@ -0,0 +1,88 @@
+/** @file
+
+ * Copyright (c) 1997, 2002 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Klaus Klein and Jason R. Thorpe.
+ *
+ * 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
+
+    NetBSD: dirname.c,v 1.10 2008/05/10 22:39:40 christos Exp
+ */
+#include  <LibConfig.h>
+
+#include <sys/cdefs.h>
+
+//#include "namespace.h"
+//#include <libgen.h>
+#include <limits.h>
+#include <string.h>
+
+#ifdef __weak_alias
+__weak_alias(dirname,_dirname)
+#endif
+
+#if !HAVE_DIRNAME
+char *
+dirname(char *path)
+{
+  static char singledot[] = ".";
+  static char result[PATH_MAX];
+  const char *lastp;
+  size_t len;
+
+  /*
+   * If `path' is a null pointer or points to an empty string,
+   * return a pointer to the string ".".
+   */
+  if ((path == NULL) || (*path == '\0'))
+    return (singledot);
+
+  /* Strip trailing slashes, if any. */
+  lastp = path + strlen(path) - 1;
+  while (lastp != path && *lastp == '/')
+    lastp--;
+
+  /* Terminate path at the last occurence of '/'. */
+  do {
+    if (*lastp == '/') {
+      /* Strip trailing slashes, if any. */
+      while (lastp != path && *lastp == '/')
+        lastp--;
+
+      /* ...and copy the result into the result buffer. */
+      len = (lastp - path) + 1 /* last char */;
+      if (len > (PATH_MAX - 1))
+        len = PATH_MAX - 1;
+
+      memcpy(result, path, len);
+      result[len] = '\0';
+
+      return (result);
+    }
+  } while (--lastp >= path);
+
+  /* No /'s found, return a pointer to the string ".". */
+  return (singledot);
+}
+#endif