119 lines
3.5 KiB
C++
119 lines
3.5 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include "common/endian.h"
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#include "common/debug.h"
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#include "common/str.h"
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#include "common/file.h"
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#include "common/util.h"
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#include "common/substream.h"
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#include "common/compression/dcl.h"
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#include "tetraedge/obb_archive.h"
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namespace Tetraedge {
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bool ObbArchive::readFileMap(Common::SeekableReadStream &indexFile, FileMap &files) {
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byte ver = indexFile.readByte();
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if (ver != 1) {
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warning("Unsupported tetraedge OBB version %d", ver);
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return false;
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}
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uint32 filecnt = indexFile.readUint32LE();
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for (uint i = 0; i < filecnt; i++) {
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uint32 namelen = indexFile.readUint32LE();
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if (namelen > 0x8000) {
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warning("ObbArchive::readFileMap: Name too long: 0x%x",
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namelen);
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return false;
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}
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char *buf = (char *)malloc(namelen + 1);
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assert(buf);
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indexFile.read(buf, namelen);
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buf[namelen] = 0;
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uint32 offset = indexFile.readUint32LE();
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uint32 sz = indexFile.readUint32LE();
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if (offset > indexFile.size() || sz > indexFile.size()
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|| offset + sz > indexFile.size()) {
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warning("ObbArchive::readFileMap: File outside of container: 0x%x+0x%x > 0x%llx",
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offset, sz, (unsigned long long) indexFile.size());
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return false;
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}
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files[buf] = FileDescriptor(offset, sz);
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free(buf);
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}
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return true;
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}
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ObbArchive* ObbArchive::open(const Common::Path& obbName) {
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Common::File indexFile;
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FileMap files;
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if (!indexFile.open(obbName))
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return nullptr;
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if (!readFileMap(indexFile, files))
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return nullptr;
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return new ObbArchive(files, obbName);
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}
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bool ObbArchive::hasFile(const Common::Path &path) const {
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return _files.contains(path.toString('/'));
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}
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int ObbArchive::listMembers(Common::ArchiveMemberList &list) const {
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for (FileMap::const_iterator i = _files.begin(), end = _files.end(); i != end; ++i) {
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list.push_back(Common::ArchiveMemberList::value_type(new Common::GenericArchiveMember(i->_key, *this)));
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}
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return _files.size();
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}
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const Common::ArchiveMemberPtr ObbArchive::getMember(const Common::Path &path) const {
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FileMap::const_iterator i = _files.find(path.toString('/'));
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if (i == _files.end())
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return nullptr;
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return Common::ArchiveMemberPtr(new Common::GenericArchiveMember(i->_key, *this));
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}
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Common::SeekableReadStream *ObbArchive::createReadStreamForMember(const Common::Path &path) const {
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Common::String translated = path.toString('/');
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if (!_files.contains(translated))
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return nullptr;
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FileDescriptor desc = _files.getVal(translated);
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Common::File *f = new Common::File();
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if (!f->open(_obbName)) {
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delete f;
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return nullptr;
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}
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return new Common::SeekableSubReadStream(f, desc._fileOffset, desc._fileOffset + desc._fileSize, DisposeAfterUse::YES);
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}
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}
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