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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 2
* 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, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
/*
* This file is based on WME Lite.
* http://dead-code.org/redir.php?target=wmelite
* Copyright (c) 2011 Jan Nedoma
*/
#include "engines/wintermute/dcgf.h"
#include "engines/wintermute/base/base_game.h"
#include "engines/wintermute/wintypes.h"
#include "engines/wintermute/base/file/BPkgFile.h"
#include "engines/wintermute/base/file/base_disk_file.h"
#include "engines/wintermute/base/base_file_manager.h"
#include "common/stream.h"
#include "common/memstream.h"
#include "common/file.h"
#include "common/zlib.h"
#include "common/archive.h"
#include "common/tokenizer.h"
#include "common/config-manager.h"
namespace WinterMute {
void correctSlashes(char *fileName) {
for (size_t i = 0; i < strlen(fileName); i++) {
if (fileName[i] == '\\') fileName[i] = '/';
}
}
Common::SeekableReadStream *openDiskFile(const Common::String &filename, BaseFileManager *fileManager) {
char fullPath[MAX_PATH_LENGTH];
uint32 prefixSize = 0;
Common::SeekableReadStream *file = NULL;
// Try directly from SearchMan first
Common::ArchiveMemberList files;
SearchMan.listMatchingMembers(files, filename);
for (Common::ArchiveMemberList::iterator it = files.begin(); it != files.end(); it++) {
if ((*it)->getName() == filename) {
file = (*it)->createReadStream();
break;
}
}
// The filename can be an explicit path, thus we need to chop it up, expecting the path the game
// specifies to follow the Windows-convention of folder\subfolder\file (absolute paths should not happen)
if (!file) {
if (filename.contains(':'))
error("openDiskFile::Absolute path or invalid filename used in %s", filename.c_str());
if (filename.contains('\\')) {
Common::StringTokenizer path(filename, "\\");
const Common::FSNode gameDataDir(ConfMan.get("path"));
Common::FSNode curNode = gameDataDir;
while (!path.empty()) {
Common::String pathPart = path.nextToken();
Common::FSNode nextNode(curNode.getChild(pathPart));
if (nextNode.exists() && nextNode.isReadable()) {
curNode = nextNode;
}
if (!curNode.isDirectory()) {
file = curNode.createReadStream();
break;
}
}
}
}
if (file) {
uint32 magic1, magic2;
magic1 = file->readUint32LE();
magic2 = file->readUint32LE();
bool compressed = false;
if (magic1 == DCGF_MAGIC && magic2 == COMPRESSED_FILE_MAGIC) compressed = true;
if (compressed) {
uint32 dataOffset, compSize, uncompSize;
dataOffset = file->readUint32LE();
compSize = file->readUint32LE();
uncompSize = file->readUint32LE();
byte *compBuffer = new byte[compSize];
if (!compBuffer) {
error("Error allocating memory for compressed file '%s'", filename.c_str());
delete file;
return NULL;
}
byte *data = new byte[uncompSize];
if (!data) {
error("Error allocating buffer for file '%s'", filename.c_str());
delete [] compBuffer;
delete file;
return NULL;
}
file->seek(dataOffset + prefixSize, SEEK_SET);
file->read(compBuffer, compSize);
if (Common::uncompress(data, (unsigned long *)&uncompSize, compBuffer, compSize) != true) {
error("Error uncompressing file '%s'", filename.c_str());
delete [] compBuffer;
delete file;
return NULL;
}
delete [] compBuffer;
return new Common::MemoryReadStream(data, uncompSize, DisposeAfterUse::YES);
delete file;
file = NULL;
} else {
file->seek(0, SEEK_SET);
return file;
}
return file;
}
return NULL;
}
} // end of namespace WinterMute
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