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

  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 cmProcess_h
#define cmProcess_h


#include "cmStandardIncludes.h"
#include <cmsys/Process.h>


/** \class cmProcess
 * \brief run a process with c++
 *
 * cmProcess wraps the kwsys process stuff in a c++ class.
 */
class cmProcess 
{
public:
  cmProcess();
  ~cmProcess();
  const char* GetCommand() { return this->Command.c_str();}
  void SetCommand(const char* command);
  void SetCommandArguments(std::vector<std::string> const& arg);
  void SetWorkingDirectory(const char* dir) { this->WorkingDirectory = dir;}
  void SetTimeout(double t) { this->Timeout = t;}
  // Return true if the process starts
  bool StartProcess();
  
  // return process state
  void CheckOutput(double timeout);
  // return the process status
  int GetProcessStatus();
  // return true if the process is running
  bool IsRunning();
  // Report the status of the program 
  int ReportStatus();
  int GetId() { return this->Id; }
  void SetId(int id) { this->Id = id;}
  int GetExitValue() { return this->ExitValue;}
  double GetTotalTime() { return this->TotalTime;}
  int GetNextOutputLine(std::string& stdOutLine, std::string& stdErrLine,
                        bool& gotStdOut, bool& gotStdErr);
private:
  int LastOutputPipe;
  double Timeout;
  double StartTime;
  double TotalTime;
  cmsysProcess* Process;
  std::vector<char> StdErrorBuffer;
  std::vector<char> StdOutBuffer;
  std::string Command;
  std::string WorkingDirectory;
  std::vector<std::string> Arguments;
  std::vector<const char*> ProcessArgs;
  std::string Output;
  int Id;
  int ExitValue;
};

#endif