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// Expression.cpp : implémentation de CExpression

#include "stdafx.h"
#include "Bus.h"
#include "Ivy.h"
#include "IvyApplication.h"

#include "Expression.h"


char * ConvBSTR( BSTR str );
BSTR ConvCSTR( const char *str );

// CExpression
STDMETHODIMP CExpression::Bind(char* regex, CBus* _bus)
{
	if ( !_bus ) return E_FAIL;
	bus = _bus;
	bus->AddRef();
	if ( id != -1 )
		return E_FAIL;
	if (  bus->bus )
		id = bus->bus->BindMsg( regex, this );
	else return E_FAIL;
	return S_OK;
}

STDMETHODIMP CExpression::Unbind(void)
{
	if ( !bus ) return E_FAIL;
	if (  bus->bus && id != -1 )
		{
		bus->bus->UnbindMsg( id );
		id = -1;
		}
	else return E_FAIL;
	bus->Release();
	return S_OK;
}

void CExpression::OnMessage(IvyApplication * app, int argc, const char ** argv)
{
	BSTR appname = ConvCSTR( app->GetName() );
    SAFEARRAY *pArrayVal = NULL;
    HRESULT hr = S_OK;
	// pour assurer la compatibilite avec VBSCript pouah horreur
    //Create the safe array for the arguments string.
    pArrayVal = SafeArrayCreateVector( VT_VARIANT, 0, argc );
    
    if (!(pArrayVal == NULL) )
    {
        // Set the values for each element of the array
		for( long i = 0 ; i < argc && SUCCEEDED( hr );i++)
		{
			hr  = SafeArrayPutElement(pArrayVal, &i, new CComVariant(ConvCSTR(argv[i]))); 
		}
       
    }
 	VARIANT args;
	args.vt = VT_ARRAY | VT_VARIANT;
	V_ARRAY(&args) = pArrayVal;

	Received( appname, args );

	SafeArrayDestroy(pArrayVal);
}

// CExpression
CExpression::CExpression()
{
	id = -1;
	bus = 0;
	ATLTRACE("CExpression created\n");
}
CExpression::~CExpression()
{
	if (  id != -1 ) 
		Unbind();
	id = -1;
	bus = 0;
	ATLTRACE("CExpression destroyed\n");
}