142 lines
3.2 KiB
C++
142 lines
3.2 KiB
C++
/*
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* This file Copyright (C) 2009-2015 Mnemosyne LLC
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*
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* It may be used under the GNU GPL versions 2 or 3
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* or any future license endorsed by Mnemosyne LLC.
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*
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*/
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#include <memory>
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#include <QDir>
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#include <QFileSystemWatcher>
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#include <QTimer>
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#include <libtransmission/transmission.h>
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#include <libtransmission/torrent-metainfo.h>
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#include "Prefs.h"
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#include "TorrentModel.h"
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#include "WatchDir.h"
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/***
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****
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***/
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WatchDir::WatchDir(TorrentModel const& model)
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: model_(model)
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{
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}
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/***
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****
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***/
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int WatchDir::metainfoTest(QString const& filename) const
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{
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auto metainfo = tr_torrent_metainfo();
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if (!metainfo.parseTorrentFile(filename.toUtf8().constData()))
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{
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return ERROR;
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}
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if (model_.hasTorrent(TorrentHash{ metainfo.infoHash() }))
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{
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return DUPLICATE;
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}
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return OK;
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}
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void WatchDir::onTimeout()
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{
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auto* t = qobject_cast<QTimer*>(sender());
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QString const filename = t->objectName();
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if (metainfoTest(filename) == OK)
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{
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emit torrentFileAdded(filename);
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}
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t->deleteLater();
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}
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void WatchDir::setPath(QString const& path, bool is_enabled)
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{
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// clear out any remnants of the previous watcher, if any
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watch_dir_files_.clear();
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watcher_.reset();
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// maybe create a new watcher
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if (is_enabled)
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{
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watcher_ = std::make_unique<QFileSystemWatcher>(QStringList{ path });
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connect(watcher_.get(), &QFileSystemWatcher::directoryChanged, this, &WatchDir::watcherActivated);
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// trigger the watchdir for .torrent files in there already
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QTimer::singleShot(0, this, SLOT(rescanAllWatchedDirectories()));
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}
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}
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void WatchDir::watcherActivated(QString const& path)
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{
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QDir const dir(path);
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// get the list of files currently in the watch directory
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QSet<QString> files;
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for (QString const& str : dir.entryList(QDir::Readable | QDir::Files))
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{
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files.insert(str);
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}
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// try to add any new files which end in .torrent
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auto const new_files = files - watch_dir_files_;
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auto const torrent_suffix = QStringLiteral(".torrent");
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for (QString const& name : new_files)
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{
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if (name.endsWith(torrent_suffix, Qt::CaseInsensitive))
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{
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QString const filename = dir.absoluteFilePath(name);
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switch (metainfoTest(filename))
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{
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case OK:
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emit torrentFileAdded(filename);
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break;
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case DUPLICATE:
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break;
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case ERROR:
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{
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// give the .torrent a few seconds to finish downloading
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auto* t = new QTimer(this);
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t->setObjectName(dir.absoluteFilePath(name));
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t->setSingleShot(true);
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connect(t, &QTimer::timeout, this, &WatchDir::onTimeout);
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t->start(5000);
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}
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}
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}
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}
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// update our file list so that we can use it
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// for comparison the next time around
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watch_dir_files_ = files;
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}
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void WatchDir::rescanAllWatchedDirectories()
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{
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if (!watcher_)
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{
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return;
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}
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for (auto const& path : watcher_->directories())
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{
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watcherActivated(path);
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}
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}
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