commandsmanager.cpp

qconsole2 qt寫的一個console元件

/***************************************************************************
commandsManager.cpp  -  description
-------------------
begin                : lun jun 27 2005
copyright            : (C) 2005 by houssem
email                : houssem@localhost
***************************************************************************/

/***************************************************************************
 *                                                                         *
 *   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.                                   *
 *                                                                         *
 ***************************************************************************/

#include "commandsManager.h"

commandsManager *commandsManager::theInstance = NULL;

commandsManager::commandsManager(Tcl_Interp* _interp)
{
    if (!_interp)
    {
        //Initialize the Tcl interpreter
   	interp = Tcl_CreateInterp();
   	Tcl_Init( interp );
    }
    else
        interp = _interp;
}

commandsManager::~commandsManager()
{
   TclCallBack<commandsManager>::unregisterAll();
}

commandsManager *commandsManager::getInstance(Tcl_Interp* interp)
{
    if (!theInstance)
    {
        theInstance = new commandsManager(interp);
  	//Register the help command
        TclCallBack<commandsManager>::registerMethod(theInstance, "help", &commandsManager::help, "displays this help message");
    }
    return theInstance;
}

void commandsManager::registerFunction(char *commandName, commandType function, char *helpMsg, void *param)
{
    commandsHelp[commandName] = helpMsg;
    Tcl_CreateCommand(interp, commandName, function, param, (Tcl_CmdDeleteProc*) NULL);
}

void commandsManager::unregisterFunction(const char *commandName)
{
    commandsHelp.remove(commandName);
    Tcl_DeleteCommand(interp, commandName);
}

void commandsManager::registerVariable(char *varName, int &Var, char *helpMsg)
{
    varsHelp[varName] = helpMsg;
    Tcl_LinkVar(interp, varName, (char *)&Var, TCL_LINK_INT);
}

void commandsManager::registerVariable(char *varName, bool &Var, char *helpMsg)
{
    varsHelp[varName] = helpMsg;
    Tcl_LinkVar(interp, varName, (char *)&Var, TCL_LINK_BOOLEAN);
}

void commandsManager::registerVariable(char *varName, char* &Var, char *helpMsg)
{
    varsHelp[varName] = helpMsg;
    Tcl_LinkVar(interp, varName, (char *)&Var, TCL_LINK_STRING);
}

int commandsManager::help( ClientData, Tcl_Interp* interp, int argc, const char *[])
{
    // Reset result data
    Tcl_ResetResult(interp);

    //Help message in case of wrong parameters
    if (argc != 1)
    {
        Tcl_AppendResult(interp, "Usage: help\n", (char*) NULL);
        return TCL_ERROR;
    }

    QMap<QString, QString>::Iterator it;
    if (commandsHelp.size())
    {
        Tcl_AppendResult(interp, "Commands :\n", (char*) NULL);
        Tcl_AppendResult(interp, "==========\n", (char*) NULL);
        for ( it = commandsHelp.begin(); it != commandsHelp.end(); ++it )
            Tcl_AppendResult(interp, QString("%1:\t\t\t%2\n").arg(it.key()).arg(it.data()).ascii(), (char*) NULL);
    }

    if (varsHelp.size())
    {
        Tcl_AppendResult(interp, "\nVariables :\n", (char*) NULL);
        Tcl_AppendResult(interp, "===========\n", (char*) NULL);
        for ( it = varsHelp.begin(); it != varsHelp.end(); ++it )
            Tcl_AppendResult(interp, QString("%1:\t\t%2\n").arg(it.key()).arg(it.data()).ascii(), (char*) NULL);
    }

    return TCL_OK;
}