1 files changed, 250 insertions, 0 deletions
diff --git a/engines/composer/resource.cpp b/engines/composer/resource.cpp
new file mode 100644
index 0000000000..390649ba52
--- /dev/null
+++ b/engines/composer/resource.cpp
@@ -0,0 +1,250 @@
+/* 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.
+ *
+ */
+
+#include "composer/resource.h"
+
+#include "common/debug.h"
+#include "common/substream.h"
+#include "common/util.h"
+#include "common/textconsole.h"
+
+namespace Composer {
+
+// Base Archive code
+// (copied from clone2727's mohawk code)
+
+Archive::Archive() {
+	_stream = 0;
+}
+
+Archive::~Archive() {
+	close();
+}
+
+bool Archive::openFile(const Common::String &fileName) {
+	Common::File *file = new Common::File();
+
+	if (!file->open(fileName)) {
+		delete file;
+		return false;
+	}
+
+	if (!openStream(file)) {
+		close();
+		return false;
+	}
+
+	return true;
+}
+
+void Archive::close() {
+	_types.clear();
+	delete _stream; _stream = 0;
+}
+
+bool Archive::hasResource(uint32 tag, uint16 id) const {
+	if (!_types.contains(tag))
+		return false;
+
+	return _types[tag].contains(id);
+}
+
+bool Archive::hasResource(uint32 tag, const Common::String &resName) const {
+	if (!_types.contains(tag) || resName.empty())
+		return false;
+
+	const ResourceMap &resMap = _types[tag];
+
+	for (ResourceMap::const_iterator it = resMap.begin(); it != resMap.end(); it++)
+		if (it->_value.name.matchString(resName))
+			return true;
+
+	return false;
+}
+
+Common::SeekableReadStream *Archive::getResource(uint32 tag, uint16 id) {
+	if (!_types.contains(tag))
+		error("Archive does not contain '%s' %04x", tag2str(tag), id);
+
+	const ResourceMap &resMap = _types[tag];
+
+	if (!resMap.contains(id))
+		error("Archive does not contain '%s' %04x", tag2str(tag), id);
+
+	const Resource &res = resMap[id];
+
+	return new Common::SeekableSubReadStream(_stream, res.offset, res.offset + res.size);
+}
+
+uint32 Archive::getResourceFlags(uint32 tag, uint16 id) const {
+	if (!_types.contains(tag))
+		error("Archive does not contain '%s' %04x", tag2str(tag), id);
+
+	const ResourceMap &resMap = _types[tag];
+
+	if (!resMap.contains(id))
+		error("Archive does not contain '%s' %04x", tag2str(tag), id);
+
+	const Resource &res = resMap[id];
+
+	return res.flags;
+}
+
+uint32 Archive::getOffset(uint32 tag, uint16 id) const {
+	if (!_types.contains(tag))
+		error("Archive does not contain '%s' %04x", tag2str(tag), id);
+
+	const ResourceMap &resMap = _types[tag];
+
+	if (!resMap.contains(id))
+		error("Archive does not contain '%s' %04x", tag2str(tag), id);
+
+	return resMap[id].offset;
+}
+
+uint16 Archive::findResourceID(uint32 tag, const Common::String &resName) const {
+	if (!_types.contains(tag) || resName.empty())
+		return 0xFFFF;
+
+	const ResourceMap &resMap = _types[tag];
+
+	for (ResourceMap::const_iterator it = resMap.begin(); it != resMap.end(); it++)
+		if (it->_value.name.matchString(resName))
+			return it->_key;
+
+	return 0xFFFF;
+}
+
+Common::String Archive::getName(uint32 tag, uint16 id) const {
+	if (!_types.contains(tag))
+		error("Archive does not contain '%s' %04x", tag2str(tag), id);
+
+	const ResourceMap &resMap = _types[tag];
+
+	if (!resMap.contains(id))
+		error("Archive does not contain '%s' %04x", tag2str(tag), id);
+
+	return resMap[id].name;
+}
+
+Common::Array<uint32> Archive::getResourceTypeList() const {
+	Common::Array<uint32> typeList;
+
+	for (TypeMap::const_iterator it = _types.begin(); it != _types.end(); it++)
+		typeList.push_back(it->_key);
+
+	return typeList;
+}
+
+Common::Array<uint16> Archive::getResourceIDList(uint32 type) const {
+	Common::Array<uint16> idList;
+
+	if (!_types.contains(type))
+		return idList;
+
+	const ResourceMap &resMap = _types[type];
+
+	for (ResourceMap::const_iterator it = resMap.begin(); it != resMap.end(); it++)
+		idList.push_back(it->_key);
+
+	return idList;
+}
+
+// Composer Archive code
+
+bool ComposerArchive::openStream(Common::SeekableReadStream *stream) {
+	// Make sure no other file is open...
+	close();
+
+	bool newStyle = false;
+	uint32 headerSize = stream->readUint32LE();
+	if (headerSize == SWAP_CONSTANT_32(ID_LBRC)) {
+		// new-style file
+		newStyle = true;
+		headerSize = stream->readUint32LE();
+		uint32 zeros = stream->readUint32LE();
+		if (zeros != 0)
+			error("invalid LBRC header (%d instead of zeros)", zeros);
+	}
+
+	uint16 numResourceTypes = stream->readUint16LE();
+	if (newStyle) {
+		uint16 unknown = stream->readUint16LE();
+		debug(4, "skipping unknown %04x", unknown);
+	}
+
+	debug(4, "Reading LBRC resource table with %d entries", numResourceTypes);
+	for (uint i = 0; i < numResourceTypes; i++) {
+		uint32 tag = stream->readUint32BE();
+		uint32 tableOffset = stream->readUint32LE();
+		debug(4, "Type '%s' at offset %d", tag2str(tag), tableOffset);
+		// starting from the start of the resource table, which differs
+		// according to whether we have the 10 extra bytes for newStyle
+		if (newStyle)
+			tableOffset += 16;
+		else
+			tableOffset += 6;
+
+		ResourceMap &resMap = _types[tag];
+
+		uint32 oldPos = stream->pos();
+		stream->seek(tableOffset);
+
+		while (true) {
+			if (stream->eos())
+				error("LBRC file ran out of stream");
+
+			uint32 offset, size, id, flags;
+			if (newStyle) {
+				offset = stream->readUint32LE();
+				if (!offset)
+					break;
+				size = stream->readUint32LE();
+				id = stream->readUint16LE();
+				flags = stream->readUint16LE(); // set to 1 for preload, otherwise no preload
+				/*uint32 junk = */ stream->readUint32LE();
+			} else {
+				id = stream->readUint16LE();
+				if (!id)
+					break;
+				offset = stream->readUint32LE();
+				offset += headerSize;
+				size = stream->readUint32LE();
+				flags = stream->readUint16LE(); // FIXME
+
+			}
+
+			Resource &res = resMap[id];
+			res.offset = offset;
+			res.size = size;
+			res.flags = flags;
+			debug(4, "Id %d, offset %d, size %d, flags %08x", id, offset, size, flags);
+		}
+		
+		stream->seek(oldPos);
+	}
+
+	_stream = stream;
+	return true;
+}
+
+}	// End of namespace Composer