mirror of
https://github.com/libretro/scummvm.git
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114 lines
3.5 KiB
C++
114 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
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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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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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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*/
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// Based on the Xentax Wiki documentation:
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// http://wiki.xentax.com/index.php/The_Last_Express_SND
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#include "lastexpress/data/archive.h"
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#include "lastexpress/debug.h"
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#include "common/debug.h"
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#include "common/file.h"
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#include "common/substream.h"
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namespace LastExpress {
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HPFArchive::HPFArchive(const Common::String &path) {
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_filename = path;
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// Open a stream to the archive
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Common::SeekableReadStream *archive = SearchMan.createReadStreamForMember(_filename);
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if (!archive) {
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debugC(2, kLastExpressDebugResource, "Error opening file: %s", path.c_str());
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return;
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}
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debugC(2, kLastExpressDebugResource, "Opened archive: %s", path.c_str());
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// Read header to get the number of files
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uint32 numFiles = archive->readUint32LE();
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debugC(3, kLastExpressDebugResource, "Number of files in archive: %d", numFiles);
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// Read the list of files
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for (unsigned int i = 0; i < numFiles; ++i) {
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char name[13];
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HPFEntry entry;
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archive->read(&name, sizeof(char) * _archiveNameSize);
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entry.offset = archive->readUint32LE();
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entry.size = archive->readUint32LE();
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entry.isOnHD = archive->readUint16LE();
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// Terminate string
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name[12] = '\0';
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Common::String filename(name);
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filename.toLowercase();
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_files[filename] = entry;
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//debugC(9, kLastExpressDebugResource, "File entry: %s (offset:%d - Size: %d - HD: %u)", &name, entry.offset, entry.size, entry.isOnHD);
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}
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// Close stream
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delete archive;
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}
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bool HPFArchive::hasFile(const Common::String &name) {
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return (_files.find(name) != _files.end());
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}
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int HPFArchive::listMembers(Common::ArchiveMemberList &list) {
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int numMembers = 0;
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for (FileMap::const_iterator i = _files.begin(); i != _files.end(); ++i) {
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list.push_back(Common::ArchiveMemberList::value_type(new Common::GenericArchiveMember(i->_key, this)));
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numMembers++;
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}
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return numMembers;
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}
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Common::ArchiveMemberPtr HPFArchive::getMember(const Common::String &name) {
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if (!hasFile(name))
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return Common::ArchiveMemberPtr();
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return Common::ArchiveMemberPtr(new Common::GenericArchiveMember(name, this));
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}
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Common::SeekableReadStream *HPFArchive::createReadStreamForMember(const Common::String &name) const {
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FileMap::const_iterator fDesc = _files.find(name);
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if (fDesc == _files.end())
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return NULL;
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Common::File *archive = new Common::File();
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if (!archive->open(_filename)) {
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delete archive;
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return NULL;
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}
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return new Common::SeekableSubReadStream(archive, fDesc->_value.offset * _archiveSectorSize, fDesc->_value.offset * _archiveSectorSize + fDesc->_value.size * _archiveSectorSize, DisposeAfterUse::YES);
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}
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} // End of namespace LastExpress
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