src/base/bittorrent/abstractfilestorage.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 "abstractfilestorage.h"
  30
  31 #include <QDir>
  32 #include <QHash>
  33 #include <QList>
  34
  35 #include "base/exceptions.h"
  36 #include "base/path.h"
  37 #include "base/utils/fs.h"
  38
  39 void BitTorrent::AbstractFileStorage::renameFile(const Path &oldPath, const Path &newPath)
  40 {
  41     if (!oldPath.isValid())
  42         throw RuntimeError(tr("The old path is invalid: '%1'.").arg(oldPath.toString()));
  43     if (!newPath.isValid())
  44         throw RuntimeError(tr("The new path is invalid: '%1'.").arg(newPath.toString()));
  45     if (newPath.isAbsolute())
  46         throw RuntimeError(tr("Absolute path isn't allowed: '%1'.").arg(newPath.toString()));
  47
  48     int renamingFileIndex = -1;
  49     for (int i = 0; i < filesCount(); ++i)
  50     {
  51         const Path path = filePath(i);
  52
  53         if ((renamingFileIndex < 0) && (path == oldPath))
  54             renamingFileIndex = i;
  55         else if (path == newPath)
  56             throw RuntimeError(tr("The file already exists: '%1'.").arg(newPath.toString()));
  57     }
  58
  59     if (renamingFileIndex < 0)
  60         throw RuntimeError(tr("No such file: '%1'.").arg(oldPath.toString()));
  61
  62     renameFile(renamingFileIndex, newPath);
  63 }
  64
  65 void BitTorrent::AbstractFileStorage::renameFolder(const Path &oldFolderPath, const Path &newFolderPath)
  66 {
  67     if (!oldFolderPath.isValid())
  68         throw RuntimeError(tr("The old path is invalid: '%1'.").arg(oldFolderPath.toString()));
  69     if (!newFolderPath.isValid())
  70         throw RuntimeError(tr("The new path is invalid: '%1'.").arg(newFolderPath.toString()));
  71     if (newFolderPath.isAbsolute())
  72         throw RuntimeError(tr("Absolute path isn't allowed: '%1'.").arg(newFolderPath.toString()));
  73
  74     QList<int> renamingFileIndexes;
  75     renamingFileIndexes.reserve(filesCount());
  76
  77     for (int i = 0; i < filesCount(); ++i)
  78     {
  79         const Path path = filePath(i);
  80
  81         if (path.hasAncestor(oldFolderPath))
  82             renamingFileIndexes.append(i);
  83         else if (path.hasAncestor(newFolderPath))
  84             throw RuntimeError(tr("The folder already exists: '%1'.").arg(newFolderPath.toString()));
  85     }
  86
  87     if (renamingFileIndexes.isEmpty())
  88         throw RuntimeError(tr("No such folder: '%1'.").arg(oldFolderPath.toString()));
  89
  90     for (const int index : renamingFileIndexes)
  91     {
  92         const Path newFilePath = newFolderPath / oldFolderPath.relativePathOf(filePath(index));
  93         renameFile(index, newFilePath);
  94     }
  95 }