rbutil/rbutilqt/zip/zip_p.h

   1 /****************************************************************************
   2 ** Filename: zip_p.h
   3 ** Last updated [dd/mm/yyyy]: 28/01/2007
   4 **
   5 ** pkzip 2.0 file compression.
   6 **
   7 ** Some of the code has been inspired by other open source projects,
   8 ** (mainly Info-Zip and Gilles Vollant's minizip).
   9 ** Compression and decompression actually uses the zlib library.
  10 **
  11 ** Copyright (C) 2007-2008 Angius Fabrizio. All rights reserved.
  12 **
  13 ** This file is part of the OSDaB project (http://osdab.sourceforge.net/).
  14 **
  15 ** This file may be distributed and/or modified under the terms of the
  16 ** GNU General Public License version 2 as published by the Free Software
  17 ** Foundation and appearing in the file LICENSE.GPL included in the
  18 ** packaging of this file.
  19 **
  20 ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
  21 ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  22 **
  23 ** See the file LICENSE.GPL that came with this software distribution or
  24 ** visit http://www.gnu.org/copyleft/gpl.html for GPL licensing information.
  25 **
  26 **********************************************************************/
  27
  28 //
  29 //  W A R N I N G
  30 //  -------------
  31 //
  32 // This file is not part of the Zip/UnZip API.  It exists purely as an
  33 // implementation detail. This header file may change from version to
  34 // version without notice, or even be removed.
  35 //
  36 // We mean it.
  37 //
  38
  39 #ifndef OSDAB_ZIP_P__H
  40 #define OSDAB_ZIP_P__H
  41
  42 #include "zip.h"
  43 #include "zipentry_p.h"
  44
  45 #include <QtGlobal>
  46 #include <QFileInfo>
  47
  48 /*!
  49         zLib authors suggest using larger buffers (128K or 256K) for (de)compression (especially for inflate())
  50         we use a 256K buffer here - if you want to use this code on a pre-iceage mainframe please change it ;)
  51 */
  52 #define ZIP_READ_BUFFER (256*1024)
  53
  54 class ZipPrivate
  55 {
  56 public:
  57         ZipPrivate();
  58         virtual ~ZipPrivate();
  59
  60         QMap<QString,ZipEntryP*>* headers;
  61
  62         QIODevice* device;
  63
  64         char buffer1[ZIP_READ_BUFFER];
  65         char buffer2[ZIP_READ_BUFFER];
  66
  67         unsigned char* uBuffer;
  68
  69         const quint32* crcTable;
  70
  71         QString comment;
  72         QString password;
  73
  74         Zip::ErrorCode createArchive(QIODevice* device);
  75         Zip::ErrorCode closeArchive();
  76         void reset();
  77
  78         bool zLibInit();
  79
  80         Zip::ErrorCode createEntry(const QFileInfo& file, const QString& root, Zip::CompressionLevel level);
  81         Zip::CompressionLevel detectCompressionByMime(const QString& ext);
  82
  83         inline void encryptBytes(quint32* keys, char* buffer, qint64 read);
  84
  85         inline void setULong(quint32 v, char* buffer, unsigned int offset);
  86         inline void updateKeys(quint32* keys, int c) const;
  87         inline void initKeys(quint32* keys) const;
  88         inline int decryptByte(quint32 key2) const;
  89
  90         inline QString extractRoot(const QString& p);
  91 };
  92
  93 #endif // OSDAB_ZIP_P__H