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 3 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, see <http://www.gnu.org/licenses/>.
 *
 */

#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