122 lines
3.8 KiB
C++
Executable File
122 lines
3.8 KiB
C++
Executable File
// This file is part of RSS Guard.
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//
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// Copyright (C) 2011-2016 by Martin Rotter <rotter.martinos@gmail.com>
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//
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// RSS Guard is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// RSS Guard is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// 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 RSS Guard. If not, see <http://www.gnu.org/licenses/>.
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#include "core/feeddownloader.h"
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#include "services/abstract/feed.h"
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#include "definitions/definitions.h"
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#include <QThread>
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#include <QDebug>
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#include <QMetaType>
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FeedDownloader::FeedDownloader(QObject *parent) : QObject(parent), m_stopUpdate(false), m_isUpdateRunning(false) {
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qRegisterMetaType<FeedDownloadResults>("FeedDownloadResults");
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}
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FeedDownloader::~FeedDownloader() {
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qDebug("Destroying FeedDownloader instance.");
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}
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bool FeedDownloader::isUpdateRunning() const {
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return m_isUpdateRunning;
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}
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void FeedDownloader::updateFeeds(const QList<Feed*> &feeds) {
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qDebug().nospace() << "Performing feed updates in thread: \'" << QThread::currentThreadId() << "\'.";
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// It may be good to disable "stop" action when batch feed update
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// starts.
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m_isUpdateRunning = true;
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m_stopUpdate = false;
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// Job starts now.
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emit started();
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FeedDownloadResults results;
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for (int i = 0, total = feeds.size(); i < total; i++) {
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if (m_stopUpdate) {
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qDebug("Stopping batch feed update now.");
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break;
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}
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int updated_messages = feeds.at(i)->update();
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if (updated_messages > 0) {
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results.appendUpdatedFeed(QPair<QString,int>(feeds.at(i)->title(), updated_messages));
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}
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qDebug("Made progress in feed updates: %d/%d (id of feed is %d).", i + 1, total, feeds.at(i)->id());
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emit progress(feeds.at(i), i + 1, total);
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}
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qDebug().nospace() << "Finished feed updates in thread: \'" << QThread::currentThreadId() << "\'.";
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results.sort();
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// Make sure that there is not "stop" action pending.
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m_isUpdateRunning = false;
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m_stopUpdate = false;
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// Update of feeds has finished.
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// NOTE: This means that now "update lock" can be unlocked
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// and feeds can be added/edited/deleted and application
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// can eventually quit.
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emit finished(results);
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}
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void FeedDownloader::stopRunningUpdate() {
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m_stopUpdate = true;
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}
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FeedDownloadResults::FeedDownloadResults() : m_updatedFeeds(QList<QPair<QString,int> >()) {
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}
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QString FeedDownloadResults::overview(int how_many_feeds) const {
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QStringList result;
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for (int i = 0, number_items_output = qMin(how_many_feeds, m_updatedFeeds.size()); i < number_items_output; i++) {
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result.append(m_updatedFeeds.at(i).first + QSL(": ") + QString::number(m_updatedFeeds.at(i).second));
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}
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QString res_str = result.join(QSL("\n"));
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if (m_updatedFeeds.size() > how_many_feeds) {
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res_str += QObject::tr("\n\n+ %n other feeds.", 0, m_updatedFeeds.size() - how_many_feeds);
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}
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return res_str;
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}
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void FeedDownloadResults::appendUpdatedFeed(const QPair<QString,int> &feed) {
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m_updatedFeeds.append(feed);
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}
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void FeedDownloadResults::sort() {
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qSort(m_updatedFeeds.begin(), m_updatedFeeds.end(), FeedDownloadResults::lessThan);
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}
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bool FeedDownloadResults::lessThan(const QPair<QString, int> &lhs, const QPair<QString, int> &rhs) {
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return lhs.second > rhs.second;
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}
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QList<QPair<QString,int> > FeedDownloadResults::updatedFeeds() const {
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return m_updatedFeeds;
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}
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