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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/BGame.h"
#include "engines/wintermute/wintypes.h"
#include "engines/wintermute/base/file/BPkgFile.h"
#include "engines/wintermute/base/file/BDiskFile.h"
#include "engines/wintermute/base/BFileManager.h"
#include "common/stream.h"
#include "common/memstream.h"
#include "common/file.h"
#include "common/zlib.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, CBFileManager *fileManager) {
char fullPath[MAX_PATH_LENGTH];
uint32 prefixSize = 0;
Common::SeekableReadStream *file = NULL;
for (uint32 i = 0; i < fileManager->_singlePaths.size(); i++) {
sprintf(fullPath, "%s%s", fileManager->_singlePaths[i], filename.c_str());
correctSlashes(fullPath);
Common::File *tempFile = new Common::File();
if (tempFile->open(fullPath)) {
file = tempFile;
} else {
delete tempFile;
}
}
// if we didn't find it in search paths, try to open directly
if (!file) {
strcpy(fullPath, filename.c_str());
correctSlashes(fullPath);
Common::File *tempFile = new Common::File();
if (tempFile->open(fullPath)) {
file = tempFile;
} else {
delete tempFile;
}
}
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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