qtreediffrunner.cpp #2

// Implementation of QTreeDiffRunner.

#include <qapplication.h>

#include "qtreediffrunner.h"


QTreeDiffRunner::QTreeDiffRunner
( QWidget* parent, const char* diffprog, FileSys* t1, FileSys* t2, QString n1, QString n2 )
: QObject(), temp1( t1 ), temp2( t2 )
{
	// Create the process with the temp file arguments.
	QString dprog( diffprog );
	pro = new QProcess( dprog, parent, "$P4DIFF" );
	pro->addArgument( t1->Path().Text() );
	pro->addArgument( t2->Path().Text() );
	if ( dprog.endsWith( "p4diff.exe" ) || dprog.endsWith( "p4diff")
		|| dprog.endsWith( "squid.exe" ) || dprog.endsWith( "squid" ) )
	{
		pro->addArgument( "-l" );
		pro->addArgument( n1 );
		pro->addArgument( "-r" );
		pro->addArgument( n2 ) ;
	}

	if ( !( pro->launch( QString::null ) ) ) //failed launch
	{
		QMessageBox::warning
			(
			parent,
			"Diff Error",
			QString( "Could not launch " ) + diffprog,
			QMessageBox::Ok,
			QMessageBox::NoButton,
			QMessageBox::NoButton
			);
		Cleanup();
	}
	else
	{
		// When the process exits, clean up the temp files.
		connect( pro, SIGNAL( processExited() ), this, SLOT( Cleanup() ) );
		// If this app is about to quit, kill the process.
		connect( qApp, SIGNAL( aboutToQuit() ), this, SLOT( Close() ) );
	}
}

QTreeDiffRunner::~QTreeDiffRunner()
{

}

void QTreeDiffRunner::Cleanup()
{
	temp1->Unlink();
	temp2->Unlink();
	delete temp1;
	delete temp2;
	delete this;
}

void QTreeDiffRunner::Close()
{
	pro->kill();
	Cleanup();    
}