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// This file 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 3 of
// the License, or (at your option) any later version.
//
// This file 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 libGDF. If not, see <http://www.gnu.org/licenses/>.
//
// Copyright 2010 Martin Billinger
#ifndef __COMMANDS_H_INCLUDED__
#define __COMMANDS_H_INCLUDED__
#include <stdexcept>
#include <string>
#include "mex.h"
class Command
{
public:
virtual void execute( mxArray *plhs[], const mxArray *prhs[] ) = 0;
void operator()( size_t nlhs, mxArray *plhs[], size_t nrhs, const mxArray *prhs[] )
{
if( m_nlhs != nlhs )
throw std::invalid_argument( "Invalid number of output arguments." );
if( m_nrhs != nrhs )
throw std::invalid_argument( "Invalid number of input arguments." );
execute( plhs, prhs );
}
private:
friend class CommandManager;
void setNP( size_t nlhs, size_t nrhs) { m_nlhs = nlhs; m_nrhs = nrhs; }
size_t m_nlhs, m_nrhs;
};
class CommandManager
{
public:
CommandManager( )
{
}
virtual ~CommandManager( )
{
std::map< std::string, Command* >::iterator it = commands.begin( );
for( ; it != commands.end(); it++ )
delete it->second;
}
void registerCommand( const std::string cmdstr, Command * cmd, size_t nlhs, size_t nrhs )
{
cmd->setNP( nlhs, nrhs );
commands[toUpper( cmdstr )] = cmd;
}
void execute( const std::string cmdstr, int nlhs, mxArray *plhs[], int nrhs, const mxArray *prhs[] )
{
std::map< std::string, Command* >::iterator it = commands.find( toUpper( cmdstr ) );
if( it == commands.end() )
throw std::invalid_argument( "Invalid command: "+toUpper( cmdstr ) );
(*it->second)( nlhs, plhs, nrhs, prhs );
}
static std::string toUpper( const std::string str )
{
std::string out( str );
for( size_t i=0; i<str.length( ); i++ )
{
out[i] = toupper( str[i] );
}
return out;
}
private:
std::map< std::string, Command* > commands;
};
#endif // COMMANDS_H
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