    001/*
    002 * Licensed to the Apache Software Foundation (ASF) under one or more
    003 * contributor license agreements.  See the NOTICE file distributed with
    004 * this work for additional information regarding copyright ownership.
    005 * The ASF licenses this file to You under the Apache License, Version 2.0
    006 * (the "License"); you may not use this file except in compliance with
    007 * the License.  You may obtain a copy of the License at
    008 *
    009 *      http://www.apache.org/licenses/LICENSE-2.0
    010 *
    011 * Unless required by applicable law or agreed to in writing, software
    012 * distributed under the License is distributed on an "AS IS" BASIS,
    013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    014 * See the License for the specific language governing permissions and
    015 * limitations under the License.
    016 */
    017package org.apache.commons.imaging.formats.tiff;
    018
    019import java.util.Comparator;
    020
    021public abstract class TiffElement {
    022    public final long offset;
    023    public final int length;
    024    public static final Comparator<TiffElement> COMPARATOR = Comparator.comparingLong(e -> e.offset);
    025
    026    public TiffElement(final long offset, final int length) {
    027        this.offset = offset;
    028        this.length = length;
    029    }
    030
    031    public abstract String getElementDescription();
    032
    033    public abstract static class DataElement extends TiffElement {
    034        private final byte[] data;
    035
    036        public DataElement(final long offset, final int length, final byte[] data) {
    037            super(offset, length);
    038
    039            this.data = data;
    040        }
    041
    042        public byte[] getData() {
    043            return data.clone();
    044        }
    045
    046        public int getDataLength() {
    047            return data.length;
    048        }
    049    }
    050
    051    public static final class Stub extends TiffElement {
    052        public Stub(final long offset, final int length) {
    053            super(offset, length);
    054        }
    055
    056        @Override
    057        public String getElementDescription() {
    058            return "Element, offset: " + offset + ", length: " + length
    059                    + ", last: " + (offset + length);
    060        }
    061
    062    }
    063}