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

  Program:   CMake - Cross-Platform Makefile Generator
  Module:    $RCSfile$
  Language:  C++
  Date:      $Date$
  Version:   $Revision$

  Copyright (c) 2002 Kitware, Inc., Insight Consortium.  All rights reserved.
  See Copyright.txt or http://www.cmake.org/HTML/Copyright.html 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 cmOutputRequiredFilesCommand_h
#define cmOutputRequiredFilesCommand_h

#include "cmCommand.h"
#include "cmMakeDepend.h"

/** \class cmOutputRequiredFilesCommand
 * \brief Output a list of required files for a source file
 *
 */
class cmOutputRequiredFilesCommand : public cmCommand
{
public:
  /**
   * This is a virtual constructor for the command.
   */
  virtual cmCommand* Clone() 
    {
    return new cmOutputRequiredFilesCommand;
    }

  /**
   * This is called when the command is first encountered in
   * the CMakeLists.txt file.
   */
  virtual bool InitialPass(std::vector<std::string> const& args);

  virtual void FinalPass();

  /**
   * The name of the command as specified in CMakeList.txt.
   */
  virtual const char* GetName() { return "OUTPUT_REQUIRED_FILES";}

  /**
   * Succinct documentation.
   */
  virtual const char* GetTerseDocumentation() 
    {
    return 
      "Output a list of required source files for a specified source file.";
    }
  
  /**
   * More documentation.
   */
  virtual const char* GetFullDocumentation()
    {
    return
      "  OUTPUT_REQUIRED_FILES(srcfile outputfile)\n"
      "Outputs a list of all the source files that are required by the specified srcfile. This list is written into outputfile. This is similar to writing out the dependencies for srcfile except that it jumps from .h files into .cxx, .c and .cpp files if possible.";
    }
  
  cmTypeMacro(cmOutputRequiredFilesCommand, cmCommand);
  void ListDependencies(cmDependInformation const *info,
                        FILE *fout,
                        std::set<cmDependInformation const*> *visited);

private:
  std::string m_File;
  std::string m_OutputFile;
};



#endif
