command.h

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/* -*- Mode: c++ -*- */
/*
 *  this is part of Spm
 *
 *  Copyright (c) 2005 Guillaume Chevallereau
 *
 *  This program is free software. You can redistribute it and/or modify it 
 *  under the terms of the GNU General Public License as published by the 
 *  Free Software Foundation. Either version 2 of the license or (at your 
 *  option) any later version.
 *
 *  This program is distributed in the hope that it will be usefull but WITHOUT
 *  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 
 *  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for 
 *  more details.
 *
 *  You should have received a copy of the GNU General Public License along 
 *  with this program; if not, write to the Free Software Foundation, Inc., 
 *  59 Temple Place - Suite 330, Boston, MA  02111-1307, USA
 */
#ifndef __COMMAND_H__
#define __COMMAND_H__

#include <string>
#include <istream>
#include <ostream>
#include <vector>
#include <map>
#include <boost/filesystem/path.hpp>

namespace Spm
{
  namespace Util
  {
    class Command
    {
    private :
      std::string __cmd;
      boost::filesystem::path __workingDir;
      std::vector<std::string> args;
      std::map<std::string,
               std::string> envs;
      unsigned int pid;
      int retVal;
      

    public:
      Command (const std::string & cmd);

      Command ();

      void setCommand (const std::string & cmd);
      
      void add (const std::string & arg);

      void add (const std::string & var,
                const std::string & val);
      
      bool execSync (std::string & out,
                     std::string & err);
      
      bool execASync (int & out,
                      int & err,
                      int & in);                      
      
      const boost::filesystem::path & getWorkingDir ();

      void setWorkingDir (const boost::filesystem::path & dir);

      unsigned int getPid ();

      int getReturnValue ();

      /*
         \brief Execute a simple command
         \param cmd The command to execute
         \param out The command output 
         \param err The command error
         \return the value returned by the execution of the command
       */
      static int exec (const std::string & cmd,
                       std::string & out,
                       std::string & err);
      
      bool wait ();
      
      /*
        \brief Send a signal to the command
        \param signal the signal to send (KILL by default)
       */
      void kill (int signal = 9);
    };
  }
}
#endif

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