SquirrelJME/SquirrelJME

// -*- Mode: Java; indent-tabs-mode: t; tab-width: 4 -*-
// ---------------------------------------------------------------------------
// SquirrelJME
//     Copyright (C) Stephanie Gawroriski <xer@multiphasicapps.net>
// ---------------------------------------------------------------------------
// SquirrelJME is under the GNU General Public License v3+, or later.
// See license.mkd for licensing and copyright information.
// ---------------------------------------------------------------------------

package cc.squirreljme.runtime.nttdocomo.io;

import cc.squirreljme.runtime.cldc.annotation.SquirrelJMEVendorApi;
import cc.squirreljme.runtime.gcf.CustomConnectionFactory;
import com.nttdocomo.ui.IApplication;
import java.io.IOException;
import java.io.InputStream;
import javax.microedition.io.Connection;
import javax.microedition.io.ConnectionNotFoundException;
import javax.microedition.io.ConnectionOption;

/**
 * Factory to create {@link ResourceConnection}.
 *
 * @see ResourceConnection
 * @since 2021/11/30
 */
@SquirrelJMEVendorApi
public class ResourceConnectionFactory
    implements CustomConnectionFactory
{
    /**
     * {@inheritDoc}
     *
     * @since 2021/11/30
     */
    @SuppressWarnings("resource")
    @Override
    @SquirrelJMEVendorApi
    public Connection connect(String __part, int __mode, boolean __timeouts,
        ConnectionOption<?>[] __opts)
        throws IOException, NullPointerException
    {
        if (__part == null)
            throw new NullPointerException("NARG");
        
        // {@squirreljme.error AH0i Resource URI does not start with triple
        // slash. (The URI part)}
        if (!__part.startsWith("///"))
            throw new ConnectionNotFoundException("AH0i " + __part);
        
        // Try loading the resource once
        Class<?> pivot = IApplication.getCurrentApp().getClass();
        String rcName = __part.substring(2);
        try (InputStream in = pivot.getResourceAsStream(rcName))
        {
            // {@squirreljme.error AH0j The specified resource does not exist.
            // (The URI part)}
            if (in == null)
                throw new ConnectionNotFoundException("AH0j " + __part);
            
            // Set up the connection
            return new ResourceConnection(pivot, rcName);
        }
    }
    
    /**
     * {@inheritDoc}
     * @since 2021/11/30
     */
    @Override
    @SquirrelJMEVendorApi
    public String scheme()
    {
        return "resource";
    }
}