/** @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