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/****************************************************************************
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** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
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** Contact: http://www.qt-project.org/legal
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** This file is part of the QtCore module of the Qt Toolkit.
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** $QT_BEGIN_LICENSE:LGPL$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and Digia. For licensing terms and
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** conditions see http://qt.digia.com/licensing. For further information
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** use the contact form at http://qt.digia.com/contact-us.
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU Lesser General Public License version 2.1 requirements
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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** In addition, as a special exception, Digia gives you certain additional
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** rights. These rights are described in the Digia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 3.0 as published by the Free Software
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** Foundation and appearing in the file LICENSE.GPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU General Public License version 3.0 requirements will be
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** met: http://www.gnu.org/copyleft/gpl.html.
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****************************************************************************/
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#include "qfilesystemwatcher_polling_p.h"
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#include <QtCore/qtimer.h>
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#ifndef QT_NO_FILESYSTEMWATCHER
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QPollingFileSystemWatcherEngine::QPollingFileSystemWatcherEngine(QObject *parent)
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: QFileSystemWatcherEngine(parent),
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connect(&timer, SIGNAL(timeout()), SLOT(timeout()));
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QStringList QPollingFileSystemWatcherEngine::addPaths(const QStringList &paths,
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QStringList *directories)
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QStringList p = paths;
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QMutableListIterator<QString> it(p);
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while (it.hasNext()) {
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QString path = it.next();
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if (!directories->contains(path))
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directories->append(path);
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if (!path.endsWith(QLatin1Char('/')))
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fi = QFileInfo(path + QLatin1Char('/'));
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this->directories.insert(path, fi);
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if (!files->contains(path))
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this->files.insert(path, fi);
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if ((!this->files.isEmpty() ||
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!this->directories.isEmpty()) &&
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timer.start(PollingInterval);
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QStringList QPollingFileSystemWatcherEngine::removePaths(const QStringList &paths,
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QStringList *directories)
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QStringList p = paths;
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QMutableListIterator<QString> it(p);
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while (it.hasNext()) {
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QString path = it.next();
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if (this->directories.remove(path)) {
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directories->removeAll(path);
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} else if (this->files.remove(path)) {
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files->removeAll(path);
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if (this->files.isEmpty() &&
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this->directories.isEmpty()) {
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void QPollingFileSystemWatcherEngine::timeout()
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QMutableHashIterator<QString, FileInfo> fit(files);
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while (fit.hasNext()) {
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QHash<QString, FileInfo>::iterator x = fit.next();
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QString path = x.key();
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emit fileChanged(path, true);
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} else if (x.value() != fi) {
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emit fileChanged(path, false);
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QMutableHashIterator<QString, FileInfo> dit(directories);
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while (dit.hasNext()) {
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QHash<QString, FileInfo>::iterator x = dit.next();
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QString path = x.key();
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if (!path.endsWith(QLatin1Char('/')))
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fi = QFileInfo(path + QLatin1Char('/'));
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emit directoryChanged(path, true);
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} else if (x.value() != fi) {
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emit directoryChanged(path, true);
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emit directoryChanged(path, false);
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#endif // !QT_NO_FILESYSTEMWATCHER