TuttleOFX/libraries/tuttle/src/tuttle/host/ofx/OfxhPluginLoadGuard.cpp

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#include "OfxhPluginLoadGuard.hpp"
#include "OfxhPlugin.hpp"
#include "OfxhPluginBinary.hpp"

#include <boost/lexical_cast.hpp>

namespace tuttle {
namespace host {
namespace ofx {

typedef OfxPlugin*( *OfxGetPluginType )( int );

OfxhPluginLoadGuard::OfxhPluginLoadGuard( OfxhPlugin& plugin, OfxhHost& host )
        : _plugin( &plugin )
        , _pluginBinary( &plugin.getBinary() )
        , _rawOfxPlugin( 0 )
{
        _pluginBinary->_binary.ref();
        OfxGetPluginType getPlugin_func = (OfxGetPluginType)_pluginBinary->_binary.findSymbol( "OfxGetPlugin" );
        _rawOfxPlugin = getPlugin_func( _plugin->getIndex() );

        if( !_rawOfxPlugin )
        {
                // We throw inside the constructor, so the destructor will not be called.
                _pluginBinary->_binary.unref();
                
                BOOST_THROW_EXCEPTION( exception::Data()
                    << exception::user( "Loading plugin failed." )
                    << exception::dev() + "OfxGetPlugin call failed at index " + _plugin->getIndex() + "."
                    << exception::filename( _pluginBinary->getBundlePath() ) );
        }
        _rawOfxPlugin->setHost( host.getHandle() );
}

OfxhPluginLoadGuard::~OfxhPluginLoadGuard()
{
        _pluginBinary->_binary.unref();
}

}
}
}