WPXStream.h
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00001 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: t; c-basic-offset: 4 -*- */
00002 /* libwpd
00003  * Version: MPL 2.0 / LGPLv2.1+
00004  *
00005  * This Source Code Form is subject to the terms of the Mozilla Public
00006  * License, v. 2.0. If a copy of the MPL was not distributed with this
00007  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
00008  *
00009  * Major Contributor(s):
00010  * Copyright (C) 2004-2005 William Lachance (wrlach@gmail.com)
00011  *
00012  * For minor contributions see the git repository.
00013  *
00014  * Alternatively, the contents of this file may be used under the terms
00015  * of the GNU Lesser General Public License Version 2.1 or later
00016  * (LGPLv2.1+), in which case the provisions of the LGPLv2.1+ are
00017  * applicable instead of those above.
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     WPX_SEEK_END
00034 };
00035 
00036 class WPXInputStream
00037 {
00038 public:
00039         WPXInputStream() {}
00040         virtual ~WPXInputStream() {}
00041 
00047         virtual bool isOLEStream() = 0;
00054         virtual WPXInputStream *getDocumentOLEStream(const char *name) = 0;
00055 
00063         virtual const unsigned char *read(unsigned long numBytes, unsigned long &numBytesRead) = 0;
00074         virtual int seek(long offset, WPX_SEEK_TYPE seekType) = 0;
00079         virtual long tell() = 0;
00085         virtual bool atEOS() = 0;
00086 };
00087 #endif
00088 /* vim:set shiftwidth=4 softtabstop=4 noexpandtab: */