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 = (e1, e2) -> { 025 if (e1.offset < e2.offset) { 026 return -1; 027 } else if (e1.offset > e2.offset) { 028 return 1; 029 } else { 030 return 0; 031 } 032 }; 033 034 public TiffElement(final long offset, final int length) { 035 this.offset = offset; 036 this.length = length; 037 } 038 039 public abstract String getElementDescription(); 040 041 public abstract static class DataElement extends TiffElement { 042 private final byte[] data; 043 044 public DataElement(final long offset, final int length, final byte[] data) { 045 super(offset, length); 046 047 this.data = data; 048 } 049 050 public byte[] getData() { 051 return data.clone(); 052 } 053 054 public int getDataLength() { 055 return data.length; 056 } 057 } 058 059 public static final class Stub extends TiffElement { 060 public Stub(final long offset, final int length) { 061 super(offset, length); 062 } 063 064 @Override 065 public String getElementDescription() { 066 return "Element, offset: " + offset + ", length: " + length 067 + ", last: " + (offset + length); 068 } 069 070 } 071}