File indexing completed on 2024-11-24 04:31:15

 /*
     SPDX-FileCopyrightText: 2005 Joris Guisson <joris.guisson@gmail.com>
 
     SPDX-License-Identifier: GPL-2.0-or-later
 */
 #ifndef BTDNDFILE_H
 #define BTDNDFILE_H
 
 #include <QSharedPointer>
 #include <QString>
 #include <util/constants.h>
 
 namespace bt
 {
 class TorrentFile;
 
 /**
  * @author Joris Guisson <joris.guisson@gmail.com>
  *
  * Special file where we keep the first and last chunk of a file which is marked as do not download.
  * THe first and last chunk of a file will most certainly be partial chunks.
  */
 class DNDFile
 {
 public:
     DNDFile(const QString &path, const TorrentFile *tf, Uint32 chunk_size);
     virtual ~DNDFile();
 
     /// Change the path of the file
     void changePath(const QString &npath);
 
     /**
      * CHeck integrity of the file, create it if it doesn't exist.
      */
     void checkIntegrity();
 
     /**
      * Read the (partial)first chunk into a buffer.
      * @param buf The buffer
      * @param off Offset off chunk
      * @param size How many bytes to read of the first chunk
      */
     Uint32 readFirstChunk(Uint8 *buf, Uint32 off, Uint32 size);
 
     /**
      * Read the (partial)last chunk into a buffer.
      * @param buf The buffer
      * @param off Offset off chunk
      * @param size How many bytes to read of the last chunk
      */
     Uint32 readLastChunk(Uint8 *buf, Uint32 off, Uint32 size);
 
     /**
      * Write the partial first chunk.
      * @param buf The buffer
      * @param off Offset into partial chunk
      * @param size Size to write
      */
     void writeFirstChunk(const Uint8 *buf, Uint32 off, Uint32 size);
 
     /**
      * Write the partial last chunk.
      * @param buf The buffer
      * @param off Offset into partial chunk
      * @param size Size to write
      */
     void writeLastChunk(const Uint8 *buf, Uint32 off, Uint32 size);
 
     typedef QSharedPointer<DNDFile> Ptr;
 
 private:
     void create();
 
 private:
     QString path;
     Uint32 first_size;
     Uint32 last_size;
 };
 
 }
 
 #endif