/*=========================================================================

  Program:   Insight Segmentation & Registration Toolkit
  Module:    $RCSfile$
  Language:  C++
  Date:      $Date$
  Version:   $Revision$

  Copyright (c) 2002 Insight Consortium. All rights reserved.
  See ITKCopyright.txt or http://www.itk.org/HTML/Copyright.htm for details.

     This software is distributed WITHOUT ANY WARRANTY; without even 
     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR 
     PURPOSE.  See the above copyright notices for more information.

=========================================================================*/
#ifndef __cmDirectory_h
#define __cmDirectory_h

#include "cmStandardIncludes.h"
#include "cmSystemTools.h"

/** \class cmDirectory
 * \brief Portable directory/filename traversal.
 * 
 * cmDirectory provides a portable way of finding the names of the files
 * in a system directory.
 *
 * cmDirectory currently works with Windows and Unix operating systems.
 */

class cmDirectory 
{
public:
  /**
   * Load the specified directory and load the names of the files
   * in that directory. 0 is returned if the directory can not be 
   * opened, 1 if it is opened.   
   */
  CM_EXPORT bool Load(const char* dir);

  /**
   * Return the number of files in the current directory.
   */
  CM_EXPORT size_t GetNumberOfFiles() { return m_Files.size();}

  /**
   * Return the file at the given index, the indexing is 0 based
   */
  CM_EXPORT const char* GetFile(size_t );

private:
  std::vector<std::string> m_Files; // Array of Files
  std::string m_Path;               // Path to Open'ed directory

}; // End Class: cmDirectory
  
#endif
