KeosConsole.cpp

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/*
 * This source file is part of KEOS (Free 3D Engine)
 * For the latest info, see http://www.keosengine.org/
 * E-mails : thierry.vouriot@keosengine.org, yeri@keosengine.org
 *
 * This program is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Lesser 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 useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser 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, or go to
 * http://www.gnu.org/copyleft/lesser.txt.
 *
 */

//==========================================================
// ORIGINAL COPYRIGHT FOLLOWS
//==========================================================
// Yes::Engine - Free C++ 3D engine
//
// Copyright (C) 2004-2005 Laurent Gomila
//
// 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 useful,
// 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.
//
// E-mail : laurent.gom@gmail.com
//==========================================================

//==========================================================
// En-têtes
//==========================================================
#include "KeosConsole.h"
#include "KeosException.h"

namespace Keos
{

  CConsole::CConsole() :
      m_Current(""),
      m_Look   (NULL),
      m_Enabled(false)
  {
    RegisterCommand("?", Console::Bind(&CConsole::GetCommands, *this));
    RegisterCommand("help",   Console::Bind(&CConsole::HelpCommand, *this));
  }


  void CConsole::ChangeLook(Console::ILook* NewLook)
  {
    Assert(NewLook != NULL);

    m_Look = NewLook;
  }


  void CConsole::RegisterCommand(const std::string& Name, const Console::CFunctor& Function,
                                 const std::string& Help)
  {
    m_Commands[Name] = Function;
    m_Helps[Name] = Help;
  }


  void CConsole::SendChar(char Character)
  {
    // Si la console n'est pas active
    // ou qu'il n'y pas de look défini
    // on ne traite pas le caractère
    if (!m_Enabled || m_Look == NULL)
      return;

    // Traitement du caractère
    switch (Character)
    {
        // Saut de ligne : on traite la commande et on efface la ligne
      case '\n' :
      case '\r' :
        if (!m_Current.empty())
        {
          ProcessCurrent();
          m_Current.clear();
        }
        break;

        // Backspace : on efface le dernier caractère
      case '\b' :
        if (!m_Current.empty())
          m_Current.erase(m_Current.size() - 1);
        break;

        // Tout le reste : on ajoute le caractère à la ligne courante
      default :
        m_Current += Character;
        break;
    }

    // On notifie au "look" que le texte courant vient de changer
    m_Look->TextChanged(m_Current);
  }


  void CConsole::Update()
  {
    m_Look->Update();
  }


  void CConsole::Draw() const
  {
    m_Look->Draw();
  }


  void CConsole::Enable(bool Enabled)
  {
    m_Enabled = Enabled;
    if (m_Look != NULL) m_Look->Show(Enabled);
  }


  std::string CConsole::GetCommands() const
  {
    std::string List;
    for (TCommandTable::const_iterator i = m_Commands.begin(); i != m_Commands.end(); ++i)
      List += i->first + " ";

    return List;
  }


  String CConsole::HelpCommand(const String& CommandName)
  {
    THelpTable::iterator It = m_Helps.find(CommandName);

    if (It != m_Helps.end())
      return m_Helps[CommandName];
    return CommandName + ": Unknown command!";
  }


  void CConsole::ProcessCurrent()
  {
    // On récupère la commande
    std::string Command;
    std::istringstream iss(m_Current);
    iss >> Command;

    // On recherche la commande dans la table des commandes
    TCommandTable::iterator It = m_Commands.find(Command);

    // Si elle s'y trouve on appelle la fonction correspondante, sinon on génère une erreur
    if (It != m_Commands.end())
    {
      // Récupération des paramètres
      std::string Params;
      std::getline(iss, Params);

      // Appel du foncteur correspondant à la commande -
      // s'il y a une erreur on la rattrape et on l'affiche dans la console
      try
      {
        m_Look->CommandCalled(It->second(Params));
      }
      catch (CBadConversion&)
      {
        m_Look->Error("Invalid number (or type) of parameters !");
      }
      catch (std::exception& E)
      {
        m_Look->Error(E.what());
      }
    }
    else
    {
      m_Look->Error("Unknown command \"" + Command + "\"");
    }
  }


} // namespace Keos

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