org.jpedal.utils.ObjectCloneFactory Maven / Gradle / Ivy

/*
 * ===========================================
 * Java Pdf Extraction Decoding Access Library
 * ===========================================
 *
 * Project Info:  http://www.idrsolutions.com
 * Help section for developers at http://www.idrsolutions.com/support/
 *
 * (C) Copyright 1997-2017 IDRsolutions and Contributors.
 *
 * This file is part of JPedal/JPDF2HTML5
 *
 @LICENSE@
 *
 * ---------------
 * ObjectCloneFactory.java
 * ---------------
 */
package org.jpedal.utils;

import java.awt.image.BufferedImage;
import java.awt.image.ColorModel;
import java.awt.image.WritableRaster;
import java.util.Map;

/**
 * custom optimised cloning code for speed
 */
public class ObjectCloneFactory {

    public static byte[] cloneArray(final byte[] array) {

        if (array == null) {
            return null;
        }

        final int count = array.length;

        final byte[] returnValue = new byte[count];

        System.arraycopy(array, 0, returnValue, 0, count);

        return returnValue;

    }

    public static byte[][] cloneDoubleArray(final byte[][] byteDArray) {
        if (byteDArray == null) {
            return null;
        } else {
            final byte[][] tmp = new byte[byteDArray.length][];
            for (int b = 0; b < byteDArray.length; b++) {
                tmp[b] = byteDArray[b].clone();
            }
            return tmp;
        }
    }

    public static BufferedImage deepCopy(final BufferedImage bi) {
        if (bi == null) {
            return null;
        }

        final ColorModel cm = bi.getColorModel();
        final boolean isAlphaPremultiplied = cm.isAlphaPremultiplied();
        final WritableRaster raster = bi.copyData(null);
        return new BufferedImage(cm, raster, isAlphaPremultiplied, null);
    }

    public static Map cloneMap(final Map optValues) {
        if (optValues != null) {
            try {
                final Map tmpMap = optValues.getClass().newInstance();
                tmpMap.putAll(optValues);
                return tmpMap;
            } catch (final Exception e) {
                LogWriter.writeLog("Exception: " + e.getMessage());
            }
        }

        return null;
    }
}