src/base/bittorrent/filesearcher.cpp

   1 /*
   2  * Bittorrent Client using Qt and libtorrent.
   3  * Copyright (C) 2020  Vladimir Golovnev <glassez@yandex.ru>
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU General Public License
   7  * as published by the Free Software Foundation; either version 2
   8  * of the License, or (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  18  *
  19  * In addition, as a special exception, the copyright holders give permission to
  20  * link this program with the OpenSSL project's "OpenSSL" library (or with
  21  * modified versions of it that use the same license as the "OpenSSL" library),
  22  * and distribute the linked executables. You must obey the GNU General Public
  23  * License in all respects for all of the code used other than "OpenSSL".  If you
  24  * modify file(s), you may extend this exception to your version of the file(s),
  25  * but you are not obligated to do so. If you do not wish to do so, delete this
  26  * exception statement from your version.
  27  */
  28
  29 #include "filesearcher.h"
  30
  31 #include <QDir>
  32
  33 #include "base/bittorrent/common.h"
  34 #include "base/bittorrent/infohash.h"
  35
  36 void FileSearcher::search(const BitTorrent::TorrentID &id, const QStringList &originalFileNames
  37                           , const QString &completeSavePath, const QString &incompleteSavePath)
  38 {
  39     const auto findInDir = [](const QString &dirPath, QStringList &fileNames) -> bool
  40     {
  41         const QDir dir {dirPath};
  42         bool found = false;
  43         for (QString &fileName : fileNames)
  44         {
  45             if (dir.exists(fileName))
  46             {
  47                 found = true;
  48             }
  49             else if (dir.exists(fileName + QB_EXT))
  50             {
  51                 found = true;
  52                 fileName += QB_EXT;
  53             }
  54         }
  55
  56         return found;
  57     };
  58
  59     QString savePath = completeSavePath;
  60     QStringList adjustedFileNames = originalFileNames;
  61     const bool found = findInDir(savePath, adjustedFileNames);
  62     if (!found && !incompleteSavePath.isEmpty())
  63     {
  64         savePath = incompleteSavePath;
  65         findInDir(savePath, adjustedFileNames);
  66     }
  67
  68     emit searchFinished(id, savePath, adjustedFileNames);
  69 }