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/*
* This file is part of the KFTPGrabber project
*
* Copyright (C) 2003-2006 by the KFTPGrabber developers
* Copyright (C) 2003-2006 Jernej Kos <kostko@jweb-network.net>
*
* 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.
*
* This program is distributed in the hope that it will be useful, but
* is provided AS IS, WITHOUT ANY WARRANTY; without even the implied
* warranty of MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, and
* NON-INFRINGEMENT. See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Steet, Fifth Floor, Boston,
* MA 02110-1301, USA.
*
* In addition, as a special exception, the copyright holders give
* permission to link the code of portions of this program with the
* OpenSSL library under certain conditions as described in each
* individual source file, and distribute linked combinations
* including the two.
*
* You must obey the GNU General Public License in all respects
* for all of the code used other than OpenSSL. If you modify
* file(s) with this exception, you may extend this exception to your
* version of the file(s), but you are not obligated to do so. If you
* do not wish to do so, delete this exception statement from your
* version. If you delete this exception statement from all source
* files in the program, then also delete it here.
*/
#include "queuegroup.h"
#include "queueobject.h"
#include "kftptransfer.h"
#include "kftpsession.h"
using namespace KFTPSession;
namespace KFTPQueue {
QueueGroup::QueueGroup(QueueObject *object)
: TQObject(object),
m_object(object),
m_childIterator(TQPtrListIterator<QueueObject>(m_object->m_children)),
m_directories(true)
{
}
void QueueGroup::reset()
{
m_childIterator.toFirst();
}
int QueueGroup::executeNextTransfer()
{
// Check if there is actually something to execute
if (!m_childIterator.current()) {
if (m_lastTransfer && m_lastTransfer->isRunning())
return -1;
if (m_childIterator.count() <= 1)
emit done();
return -1;
} else if (!m_directories && m_lastTransfer && m_lastTransfer->isDir()) {
return 0;
}
Transfer *transfer = static_cast<Transfer*>(m_childIterator.current());
// Check if we have enough connections available
if (m_lastTransfer) {
Session *sourceSession = m_lastTransfer->getSourceSession();
Session *destinationSession = m_lastTransfer->getDestinationSession();
if ((sourceSession && !sourceSession->isFreeConnection()) || (destinationSession && !destinationSession->isFreeConnection()))
return 0;
// Reserve the connections immediately
transfer->assignSessions(sourceSession, destinationSession);
}
// Get the transfer instance and schedule it's execution
transfer->TQObject::disconnect(this);
connect(transfer, SIGNAL(transferComplete(long)), this, SLOT(incrementAndExecute()));
connect(transfer, SIGNAL(transferAbort(long)), this, SIGNAL(interrupted()));
transfer->delayedExecute();
// Prepare for the next transfer
m_lastTransfer = transfer;
return 1;
}
void QueueGroup::incrementAndExecute()
{
if (TQObject::sender()) {
const Transfer *transfer = static_cast<const Transfer*>(TQObject::sender());
if (!transfer->isDir())
m_directories = false;
}
++m_childIterator;
int result = executeNextTransfer();
switch (result) {
case 0: --m_childIterator; break;
case 1: {
m_directories = false;
incrementAndExecute();
break;
}
default: break;
}
if (result != -1 && !m_directories)
m_directories = true;
}
}
#include "queuegroup.moc"
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