FIFE  2008.0
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rawdatadat2.cpp
00001 /***************************************************************************
00002  *   Copyright (C) 2005-2008 by the FIFE team                              *
00003  *   http://www.fifengine.de                                               *
00004  *   This file is part of FIFE.                                            *
00005  *                                                                         *
00006  *   FIFE is free software; you can redistribute it and/or                 *
00007  *   modify it under the terms of the GNU Lesser General Public            *
00008  *   License as published by the Free Software Foundation; either          *
00009  *   version 2.1 of the License, or (at your option) any later version.    *
00010  *                                                                         *
00011  *   This library is distributed in the hope that it will be useful,       *
00012  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
00013  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU     *
00014  *   Lesser General Public License for more details.                       *
00015  *                                                                         *
00016  *   You should have received a copy of the GNU Lesser General Public      *
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00018  *   Free Software Foundation, Inc.,                                       *
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00020  ***************************************************************************/
00021 
00022 // Standard C++ library includes
00023 #include <algorithm>
00024 
00025 // 3rd party library includes
00026 #include <boost/scoped_array.hpp>
00027 #include <boost/scoped_ptr.hpp>
00028 #include <zlib.h>
00029 
00030 // FIFE includes
00031 // These includes are split up in two parts, separated by one empty line
00032 // First block: files included from the FIFE root src directory
00033 // Second block: files included from the same folder
00034 #include "vfs/raw/rawdata.h"
00035 #include "vfs/vfs.h"
00036 #include "util/base/exception.h"
00037 
00038 #include "rawdatadat2.h"
00039 
00040 namespace FIFE {
00041 
00042     RawDataDAT2::RawDataDAT2(VFS* vfs, const std::string& datfile, const s_info& info) :
00043         RawDataMemSource(info.unpackedLength) {
00044 
00045         boost::scoped_ptr<RawData> input (vfs->open(datfile));
00046         input->setIndex(info.offset);
00047 
00048         if (info.type == 1) { // compressed
00049             boost::scoped_array<uint8_t> compressed(new uint8_t[info.packedLength]);
00050             input->readInto(compressed.get(), info.packedLength);
00051 
00052             uLongf dstlen = info.unpackedLength;
00053             if (uncompress(getRawData(), &dstlen, compressed.get(), info.packedLength) != Z_OK || dstlen != info.unpackedLength) {
00054                 throw InvalidFormat("failed to decompress " + info.name + " (inside: " + datfile + ")");
00055             }
00056         } else {
00057             input->readInto(getRawData(), info.unpackedLength);
00058         }
00059     }
00060 
00061 }