/*
 * Minecraft Forge
 * Copyright (c) 2016-2018.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation version 2.1
 * of the License.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 */

package net.minecraftforge.fml.loading;

import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.net.URLConnection;
import java.net.URLStreamHandler;
import java.nio.file.Files;

public class ModJarURLHandler extends URLStreamHandler
{
    // modjar:///modid!path/to/file
    @Override
    protected URLConnection openConnection(URL url) throws IOException {
        return new URLConnection(url) {
            private String modpath;
            private String modid;

            @Override
            public void connect() throws IOException
            {
                final String path = url.getPath();
                final String[] parts = path.split("!");
                if (parts.length!=2) throw new IOException("Illegal URL format "+path);
                modid = parts[0];
                modpath = parts[1];
            }
            @Override
            public InputStream getInputStream() throws IOException
            {
                return Files.newInputStream(FMLLoader.getLoadingModList().getModFileById(modid).getFile().findResource(modpath));
            }
        };
    }
}