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 net.multiphasicapps.pcftosqf.pcf;

import java.io.DataInputStream;
import java.io.IOException;

/**
 * Scalable widths table, these are postscript em-units at 1/1000th of an em.
 *
 * @since 2018/11/28
 */
public final class PCFScalableWidths
{
    /** The format. */
    public final int format;
    
    /** The scalable widths. */
    private final int[] _swidths;
    
    /**
     * Initializes the scalable widths.
     *
     * @param __format The format used.
     * @param __swidths The widths.
     * @throws NullPointerException On null arguments.
     * @since 2018/11/28
     */
    public PCFScalableWidths(int __format, int[] __swidths)
        throws NullPointerException
    {
        if (__swidths == null)
            throw new NullPointerException("NARG");
        
        this.format = __format;
        this._swidths = __swidths.clone();
    }
    
    /**
     * Reads the scalable widths.
     *
     * @param __dis The input stream.
     * @return The resulting encoding data.
     * @throws IOException On read errors.
     * @throws NullPointerException On null arguments.
     * @since 2018/11/28
     */
    public static final PCFScalableWidths read(DataInputStream __dis)
        throws IOException, NullPointerException
    {
        if (__dis == null)
            throw new NullPointerException("NARG");
        
        // Format
        int format = Integer.reverseBytes(__dis.readInt());
        
        // Read in table
        int n = __dis.readInt();
        int[] swidths = new int[n];
        for (int i = 0; i < n; i++)
            swidths[i] = __dis.readInt();
        
        return new PCFScalableWidths(format, swidths);
    }
}