scummvm/engines/prince/resource.h

/* 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.
 *
 */

#ifndef PRINCE_RESOURCE_H
#define PRINCE_RESOURCE_H

#include "common/stream.h"
#include "common/memstream.h"
#include "common/archive.h"
#include "common/debug-channels.h"
#include "common/ptr.h"

#include "prince/decompress.h"

namespace Prince {

namespace Resource {

Common::SeekableReadStream *getDecompressedStream(Common::SeekableReadStream *stream);

template <typename T>
bool loadFromStream(T &resource, Common::SeekableReadStream &stream) {
	return resource.loadStream(stream);
}

template<typename T>
bool loadResource(T *resource, const char *resourceName, bool required) {
	Common::SeekableReadStream *stream_(SearchMan.createReadStreamForMember(resourceName));
	if (!stream_) {
		if (required)
			error("Can't load %s", resourceName);
		return false;
	}

	Common::ScopedPtr<Common::SeekableReadStream> stream(getDecompressedStream(stream_));

	return loadFromStream(*resource, *stream);
}

template <typename T>
bool loadResource(Common::Array<T> &array, Common::SeekableReadStream &stream, bool required = true) {
	T t;
	while (t.loadFromStream(stream))
		array.push_back(t);

	return true;
}


template <typename T>
bool loadResource(Common::Array<T> &array, const char *resourceName, bool required = true) {
	Common::SeekableReadStream *stream_(SearchMan.createReadStreamForMember(resourceName));
	if (!stream_) {
		if (required)
			error("Can't load %s", resourceName);
		return false;
	}

	Common::ScopedPtr<Common::SeekableReadStream> stream(getDecompressedStream(stream_));

	return loadResource(array, *stream, required);
}

template <typename T>
bool loadResource(Common::Array<T *> &array, const char *resourceName, bool required = true) {

	Common::SeekableReadStream *stream_(SearchMan.createReadStreamForMember(resourceName));
	if (!stream_) {
		if (required)
			error("Can't load %s", resourceName);
		return false;
	}

	Common::ScopedPtr<Common::SeekableReadStream> stream(getDecompressedStream(stream_));

	// FIXME: This is stupid. Maybe loadFromStream should be helper method that returns initialized object
	while (true) {
		T* t = new T();
		if (!t->loadFromStream(*stream)) {
			delete t;
			break;
		}
		array.push_back(t);
	}
	return true;
}

}

} // End of namespace Prince

#endif