WPXStream.h
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00001 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: t; c-basic-offset: 4 -*- */
00002 /* libwpd
00003  * Copyright (C) 2004-2005 William Lachance (wrlach@gmail.com)
00004  *
00005  * This library is free software; you can redistribute it and/or
00006  * modify it under the terms of the GNU Library 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 WPXSTREAM_H
00027 #define WPXSTREAM_H
00028 
00029 enum WPX_SEEK_TYPE
00030 {
00031         WPX_SEEK_CUR,
00032         WPX_SEEK_SET
00033 };
00034 
00035 class WPXInputStream
00036 {
00037 public:
00038         WPXInputStream() {}
00039         virtual ~WPXInputStream() {}
00040 
00046         virtual bool isOLEStream() = 0;
00053         virtual WPXInputStream *getDocumentOLEStream(const char *name) = 0;
00054 
00062         virtual const unsigned char *read(unsigned long numBytes, unsigned long &numBytesRead) = 0;
00073         virtual int seek(long offset, WPX_SEEK_TYPE seekType) = 0;
00078         virtual long tell() = 0;
00084         virtual bool atEOS() = 0;
00085 };
00086 #endif
00087 /* vim:set shiftwidth=4 softtabstop=4 noexpandtab: */