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131 lines
3.9 KiB
131 lines
3.9 KiB
/*
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* This file is part of the KFTPGrabber project
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*
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* Copyright (C) 2003-2006 by the KFTPGrabber developers
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* Copyright (C) 2003-2006 Jernej Kos <kostko@jweb-network.net>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* is provided AS IS, WITHOUT ANY WARRANTY; without even the implied
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* warranty of MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, and
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* NON-INFRINGEMENT. See the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Steet, Fifth Floor, Boston,
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* MA 02110-1301, USA.
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*
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* In addition, as a special exception, the copyright holders give
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* permission to link the code of portions of this program with the
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* OpenSSL library under certain conditions as described in each
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* individual source file, and distribute linked combinations
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* including the two.
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*
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* You must obey the GNU General Public License in all respects
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* for all of the code used other than OpenSSL. If you modify
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* file(s) with this exception, you may extend this exception to your
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* version of the file(s), but you are not obligated to do so. If you
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* do not wish to do so, delete this exception statement from your
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* version. If you delete this exception statement from all source
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* files in the program, then also delete it here.
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*/
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#include "queuegroup.h"
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#include "queueobject.h"
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#include "kftptransfer.h"
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#include "kftpsession.h"
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using namespace KFTPSession;
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namespace KFTPQueue {
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QueueGroup::QueueGroup(QueueObject *object)
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: TQObject(object),
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m_object(object),
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m_childIterator(TQPtrListIterator<QueueObject>(m_object->m_children)),
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m_directories(true)
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{
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}
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void QueueGroup::reset()
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{
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m_childIterator.toFirst();
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}
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int QueueGroup::executeNextTransfer()
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{
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// Check if there is actually something to execute
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if (!m_childIterator.current()) {
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if (m_lastTransfer && m_lastTransfer->isRunning())
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return -1;
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if (m_childIterator.count() <= 1)
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emit done();
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return -1;
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} else if (!m_directories && m_lastTransfer && m_lastTransfer->isDir()) {
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return 0;
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}
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Transfer *transfer = static_cast<Transfer*>(m_childIterator.current());
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// Check if we have enough connections available
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if (m_lastTransfer) {
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Session *sourceSession = m_lastTransfer->getSourceSession();
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Session *destinationSession = m_lastTransfer->getDestinationSession();
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if ((sourceSession && !sourceSession->isFreeConnection()) || (destinationSession && !destinationSession->isFreeConnection()))
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return 0;
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// Reserve the connections immediately
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transfer->assignSessions(sourceSession, destinationSession);
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}
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// Get the transfer instance and schedule it's execution
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transfer->TQObject::disconnect(this);
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connect(transfer, SIGNAL(transferComplete(long)), this, SLOT(incrementAndExecute()));
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connect(transfer, SIGNAL(transferAbort(long)), this, SIGNAL(interrupted()));
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transfer->delayedExecute();
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// Prepare for the next transfer
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m_lastTransfer = transfer;
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return 1;
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}
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void QueueGroup::incrementAndExecute()
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{
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if (TQObject::sender()) {
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const Transfer *transfer = static_cast<const Transfer*>(TQObject::sender());
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if (!transfer->isDir())
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m_directories = false;
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}
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++m_childIterator;
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int result = executeNextTransfer();
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switch (result) {
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case 0: --m_childIterator; break;
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case 1: {
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m_directories = false;
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incrementAndExecute();
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break;
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}
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default: break;
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}
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if (result != -1 && !m_directories)
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m_directories = true;
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}
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}
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#include "queuegroup.moc"
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