WP5VariableLengthGroup.h

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00001 /* libwpd
00002  * Copyright (C) 2003 William Lachance (william.lachance@sympatico.ca)
00003  * Copyright (C) 2003 Marc Maurer (j.m.maurer@student.utwente.nl)
00004  *  
00005  * This library is free software; you can redistribute it and/or
00006  * modify it under the terms of the GNU Lesser General Public
00007  * License as published by the Free Software Foundation; either
00008  * version 2 of the License, or (at your option) any later version.
00009  *
00010  * This library is distributed in the hope that it will be useful,
00011  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00012  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00013  * Library General Public License for more details.
00014  *
00015  * You should have received a copy of the GNU Library General Public
00016  * License along with this library; if not, write to the Free Software
00017  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
00018  *
00019  * For further information visit http://libwpd.sourceforge.net
00020  */
00021 
00022 /* "This product is not manufactured, approved, or supported by 
00023  * Corel Corporation or Corel Corporation Limited."
00024  */
00025 
00026 #ifndef WP5VARIABLELENGTHGROUP_H
00027 #define WP5VARIABLELENGTHGROUP_H
00028 
00029 #include "WP5Part.h"
00030 
00031 class WP5VariableLengthGroup_SubGroup
00032 {
00033 public:
00034         virtual ~WP5VariableLengthGroup_SubGroup() {}
00035         virtual void parse(WP5Listener *listener) = 0;
00036 };
00037 
00038 class WP5VariableLengthGroup : public WP5Part
00039 {
00040  public:
00041         WP5VariableLengthGroup(); // WP5VariableLengthGroup should _never_ be constructed, only its inherited classes
00042         virtual ~WP5VariableLengthGroup() {}
00043         
00044         static WP5VariableLengthGroup * constructVariableLengthGroup(WPXInputStream *input, uint8_t group);
00045 
00046  protected:
00047         void _read(WPXInputStream *input);
00048         virtual void _readContents(WPXInputStream *input) {} // we don't always need more information than that provided generically
00049 
00050         const uint8_t getSubGroup() const { return m_subGroup; }
00051 
00052  private:
00053         uint8_t m_subGroup;
00054         uint16_t m_size; 
00055 };
00056 
00057 #endif /* WP5VARIABLELENGTHGROUP_H */

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