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/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
#ifndef COMMON_GENTEE_INSTALLER_H
#define COMMON_GENTEE_INSTALLER_H
#include "common/archive.h"
/**
* @file
* Gentee Installer decompressor used in engines:
* - vcruise
*/
namespace Common {
/** NOTE for future implementation:
* A Gentee Installer setup executable can be deployed with a package file (disk1.pak, etc.) or the
* data can be embedded in the setup executable. If it's deployed with the executable, then you
* must read 12 bytes from offset 1008 in the executable file. Of that, the first 4 bytes is the
* position of the embedded ginstall.dll compressed data, the next 4 are the compressed size of
* ginstall.dll, and the next 4 are the decompressed size of ginstall.dll.
*
* From that, compute the end position of the DLL data from the DLL position + the compressed size.
* If that position is less than the end of the file, then the package is embedded in the setup
* executable starting at that location.
*/
/**
* Loads a Gentee Installer package.
*
* This product appears to have been renamed to CreateInstall in later versions, which also adopted
* other compression methods like PPMd. This version uses LZ77 with adaptive Huffman coding.
*
* @param stream Data stream to load
* @param prefixToRemove Specifies the prefix of extract directives to include, and removes the prefix
* If you pass an empty string or null, all directives will be included
* @param threadSafe If true, all read operations will be wrapped in a mutex-guarded substream
*
* @return The Gentee Installer package archive
*/
Common::Archive *createGenteeInstallerArchive(Common::SeekableReadStream *stream, const char *prefixToRemove, bool threadSafe);
} // End of namespace Common
#endif
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