SquirrelJME/SquirrelJME

// -*- Mode: Java; indent-tabs-mode: t; tab-width: 4 -*-
// ---------------------------------------------------------------------------
// SquirrelJME
//     Copyright (C) Stephanie Gawroriski <xer@multiphasicapps.net>
// ---------------------------------------------------------------------------
// SquirrelJME is under the Mozilla Public License Version 2.0.
// See license.mkd for licensing and copyright information.
// ---------------------------------------------------------------------------

package cc.squirreljme.vm;

import java.io.IOException;
import java.io.InputStream;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.StandardOpenOption;

/**
 * Jar Library for SummerCoat.
 *
 * @since 2020/11/23
 */
public class SummerCoatJarLibrary
    implements VMClassLibrary
{
    /** Special name for SummerCoat ROM chunk. */
    public static final String ROM_CHUNK_RESOURCE =
        "$$SQUIRRELJME$SUMMERCOAT$$";
    
    /** The path to the ROM. */
    protected final Path path;
    
    /**
     * Initializes the ROM library.
     * 
     * @param __path The ROM path.
     * @throws NullPointerException On null arguments.
     * @since 2020/11/23
     */
    public SummerCoatJarLibrary(Path __path)
        throws NullPointerException
    {
        if (__path == null)
            throw new NullPointerException("NARG");
        
        this.path = __path;
    }
    
    /**
     * {@inheritDoc}
     * @since 2020/11/23
     */
    @Override
    public String[] listResources()
    {
        // There is only ever a single resource
        return new String[]{SummerCoatJarLibrary.ROM_CHUNK_RESOURCE};
    }
    
    /**
     * {@inheritDoc}
     * @since 2020/11/23
     */
    @Override
    public String name()
    {
        return this.path.getFileName().toString();
    }
    
    /**
     * {@inheritDoc}
     * @since 2021/06/13
     */
    @Override
    public Path path()
    {
        return this.path;
    }
    
    /**
     * {@inheritDoc}
     * @since 2020/11/23
     */
    @Override
    public InputStream resourceAsStream(String __rc)
        throws IOException, NullPointerException
    {
        if (__rc == null)
            throw new NullPointerException("NARG");
        
        // Not our ROM chunk?
        if (!SummerCoatJarLibrary.ROM_CHUNK_RESOURCE.equals(__rc))
            return null;
        
        return Files.newInputStream(this.path, StandardOpenOption.READ);
    }
    
    /**
     * {@inheritDoc}
     * @since 2020/11/27
     */
    @Override
    public String toString()
    {
        return this.name();
    }
    
    /**
     * Checks if this is a SQC or not.
     * 
     * @param __s The file name.
     * @return If this is a SQC ROM.
     * @throws NullPointerException On null arguments.
     * @since 2020/11/27
     */
    public static boolean isSqc(Path __s)
        throws NullPointerException
    {
        if (__s == null)
            throw new NullPointerException("NARG");
        
        return SummerCoatJarLibrary.isSqc(__s.toString());
    }
    
    /**
     * Checks if this is a SQC or not.
     * 
     * @param __s The file name.
     * @return If this is a SQC ROM.
     * @throws NullPointerException On null arguments.
     * @since 2020/11/27
     */
    public static boolean isSqc(String __s)
        throws NullPointerException
    {
        if (__s == null)
            throw new NullPointerException("NARG");
        
        return __s.endsWith(".sqc") || __s.endsWith(".SQC");
    }
}