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+/** @file
+
+Copyright (c) 2007 - 2008, Intel Corporation                                                         
+All rights reserved. This program and the accompanying materials                          
+are licensed and made available under the terms and conditions of the BSD License         
+which accompanies this distribution.  The full text of the license may be found at        
+http://opensource.org/licenses/bsd-license.php                                            
+                                                                                          
+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,                     
+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.             
+
+Module Name:
+
+  OsPath.h
+
+Abstract:
+
+  Header file for helper functions useful to operate file directories 
+  by parsing file path. 
+
+**/
+
+#ifndef _EFI_OS_PATH_H
+#define _EFI_OS_PATH_H
+
+#include <Common/UefiBaseTypes.h>
+
+//
+// Functions declarations
+//
+
+CHAR8*
+OsPathDirName (
+  IN CHAR8    *FilePath
+  )
+;
+/**
+
+Routine Description:
+
+  This function returns the directory path which contains the particular path.
+  Some examples:
+    "a/b/c"  -> "a/b"
+    "a/b/c/" -> "a/b"
+    "a"      -> "."
+    "."      -> ".."
+    "/"      -> NULL
+
+  This function does not check for the existence of the file.
+
+  The caller must free the string returned.
+
+Arguments:
+
+  FilePath     Path name of file to get the parent directory for.
+
+Returns:
+
+  NULL if error
+
+**/
+
+
+VOID
+OsPathNormPathInPlace (
+  IN CHAR8    *Path
+  )
+;
+/**
+
+Routine Description:
+
+  This function returns the directory path which contains the particular path.
+  Some examples:
+    "a/b/../c" -> "a/c"
+    "a/b//c"   -> "a/b/c"
+    "a/./b"    -> "a/b"
+
+  This function does not check for the existence of the file.
+
+Arguments:
+
+  Path     Path name of file to normalize
+
+Returns:
+
+  The string is altered in place.
+
+**/
+
+
+CHAR8*
+OsPathPeerFilePath (
+  IN CHAR8    *OldPath,
+  IN CHAR8    *Peer
+  )
+;
+/**
+
+Routine Description:
+
+  This function replaces the final portion of a path with an alternative
+  'peer' filename.  For example:
+    "a/b/../c", "peer" -> "a/b/../peer"
+    "a/b/", "peer"     -> "a/b/peer"
+    "/a", "peer"       -> "/peer"
+    "a", "peer"        -> "peer"
+
+  This function does not check for the existence of the file.
+
+Arguments:
+
+  OldPath     Path name of replace the final segment
+  Peer        The new path name to concatinate to become the peer path
+
+Returns:
+
+  A CHAR8* string, which must be freed by the caller
+
+**/
+
+
+BOOLEAN
+OsPathExists (
+  IN CHAR8    *InputFileName
+  )
+;
+/**
+
+Routine Description:
+
+  Checks if a file exists
+
+Arguments:
+
+  InputFileName     The name of the file to check for existence
+
+Returns:
+
+  TRUE              The file exists
+  FALSE             The file does not exist
+
+**/
+
+
+#endif