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

  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 cmIncludeCommand_h
#define cmIncludeCommand_h

#include "cmStandardIncludes.h"
#include "cmCommand.h"

/** \class cmIncludeCommand
 * \brief 
 *
 *  cmIncludeCommand defines a list of distant
 *  files that can be "included" in the current list file.
 *  In almost every sense, this is identical to a C/C++
 *  #include command.  Arguments are first expended as usual.
 */
class cmIncludeCommand : public cmCommand
{
public:
  /**
   * This is a virtual constructor for the command.
   */
  virtual cmCommand* Clone() 
    {
    return new cmIncludeCommand;
    }

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

  /**
   * This determines if the command gets propagated down
   * to makefiles located in subdirectories.
   */
  virtual bool IsInherited() {return true;}

  /**
   * The name of the command as specified in CMakeList.txt.
   */
  virtual const char* GetName() {return "INCLUDE";}
  
  /**
   * Succinct documentation.
   */
  virtual const char* GetTerseDocumentation() 
    {
    return "Basically identical to a C #include \"somthing\" command.";
    }
  
  /**
   * More documentation.
   */
  virtual const char* GetFullDocumentation()
    {
    return
      "INCLUDE(file1 [OPTIONAL])\nIf OPTIONAL is present, then do not complain "
      "if the file does not exist.";
    }
  
  cmTypeMacro(cmIncludeCommand, cmCommand);
};



#endif
