1 /*
2 * Copyright (c) 2005, 2016, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25 package com.sun.imageio.plugins.tiff;
26
27 import java.util.Arrays;
28 import java.util.List;
29 import javax.imageio.metadata.IIOMetadataNode;
30 import org.w3c.dom.Node;
31 import javax.imageio.plugins.tiff.TIFFDirectory;
32 import javax.imageio.plugins.tiff.TIFFField;
33 import javax.imageio.plugins.tiff.TIFFTag;
34 import javax.imageio.plugins.tiff.TIFFTagSet;
35
36 /**
37 * The {@code Node} representation of a {@code TIFFField}
38 * wherein the child node is procedural rather than buffered.
39 */
40 public class TIFFFieldNode extends IIOMetadataNode {
41 private static String getNodeName(TIFFField f) {
42 return (f.hasDirectory() || f.getData() instanceof TIFFDirectory) ?
43 "TIFFIFD" : "TIFFField";
44 }
45
46 private boolean isIFD;
47
48 private Boolean isInitialized = Boolean.FALSE;
49
50 private TIFFField field;
51
52 public TIFFFieldNode(TIFFField field) {
53 super(getNodeName(field));
54
55 isIFD = field.hasDirectory() ||
56 field.getData() instanceof TIFFDirectory;
57
58 this.field = field;
59
60 TIFFTag tag = field.getTag();
61 int tagNumber = tag.getNumber();
62 String tagName = tag.getName();
63
64 if(isIFD) {
65 if(tagNumber != 0) {
66 setAttribute("parentTagNumber", Integer.toString(tagNumber));
67 }
68 if(tagName != null) {
69 setAttribute("parentTagName", tagName);
70 }
71
72 TIFFDirectory dir = field.hasDirectory() ?
73 field.getDirectory() : (TIFFDirectory)field.getData();
74 TIFFTagSet[] tagSets = dir.getTagSets();
75 if(tagSets != null) {
76 StringBuilder tagSetNames = new StringBuilder();
77 for(int i = 0; i < tagSets.length; i++) {
78 tagSetNames.append(tagSets[i].getClass().getName());
79 if(i != tagSets.length - 1) {
80 tagSetNames.append(",");
81 }
82 }
83 setAttribute("tagSets", tagSetNames.toString());
84 }
85 } else {
86 setAttribute("number", Integer.toString(tagNumber));
87 setAttribute("name", tagName);
88 }
89 }
90
91 private synchronized void initialize() {
92 if(isInitialized) return;
93
94 if(isIFD) {
95 TIFFDirectory dir = field.hasDirectory() ?
96 field.getDirectory() : (TIFFDirectory)field.getData();
97 TIFFField[] fields = dir.getTIFFFields();
98 if(fields != null) {
99 TIFFTagSet[] tagSets = dir.getTagSets();
100 List<TIFFTagSet> tagSetList = Arrays.asList(tagSets);
101 int numFields = fields.length;
102 for(int i = 0; i < numFields; i++) {
103 TIFFField f = fields[i];
104 int tagNumber = f.getTagNumber();
105 TIFFTag tag = TIFFIFD.getTag(tagNumber, tagSetList);
106
107 Node node = f.getAsNativeNode();
108
109 if (node != null) {
110 appendChild(node);
111 }
112 }
113 }
114 } else {
115 IIOMetadataNode child;
116 int count = field.getCount();
117 if (field.getType() == TIFFTag.TIFF_UNDEFINED) {
118 child = new IIOMetadataNode("TIFFUndefined");
119
120 byte[] data = field.getAsBytes();
121 StringBuffer sb = new StringBuffer();
122 for (int i = 0; i < count; i++) {
123 sb.append(Integer.toString(data[i] & 0xff));
124 if (i < count - 1) {
125 sb.append(",");
126 }
127 }
128 child.setAttribute("value", sb.toString());
129 } else {
130 child = new IIOMetadataNode("TIFF" +
131 TIFFField.getTypeName(field.getType()) +
132 "s");
133
134 TIFFTag tag = field.getTag();
135
136 for (int i = 0; i < count; i++) {
137 IIOMetadataNode cchild =
138 new IIOMetadataNode("TIFF" +
139 TIFFField.getTypeName(field.getType()));
140
141 cchild.setAttribute("value", field.getValueAsString(i));
142 if (tag.hasValueNames() && field.isIntegral()) {
143 int value = field.getAsInt(i);
144 String name = tag.getValueName(value);
145 if (name != null) {
146 cchild.setAttribute("description", name);
147 }
148 }
149
150 child.appendChild(cchild);
151 }
152 }
153 appendChild(child);
154 }
155
156 isInitialized = Boolean.TRUE;
157 }
158
159 // Need to override this method to avoid a stack overflow exception
160 // which will occur if super.appendChild is called from initialize().
161 public Node appendChild(Node newChild) {
162 if (newChild == null) {
163 throw new NullPointerException("newChild == null!");
164 }
165
166 return super.insertBefore(newChild, null);
167 }
168
169 // Override all methods which refer to child nodes.
170
171 public boolean hasChildNodes() {
172 initialize();
173 return super.hasChildNodes();
174 }
175
176 public int getLength() {
177 initialize();
178 return super.getLength();
179 }
180
181 public Node getFirstChild() {
182 initialize();
183 return super.getFirstChild();
184 }
185
186 public Node getLastChild() {
187 initialize();
188 return super.getLastChild();
189 }
190
191 public Node getPreviousSibling() {
192 initialize();
193 return super.getPreviousSibling();
194 }
195
196 public Node getNextSibling() {
197 initialize();
198 return super.getNextSibling();
199 }
200
201 public Node insertBefore(Node newChild,
202 Node refChild) {
203 initialize();
204 return super.insertBefore(newChild, refChild);
205 }
206
207 public Node replaceChild(Node newChild,
208 Node oldChild) {
209 initialize();
210 return super.replaceChild(newChild, oldChild);
211 }
212
213 public Node removeChild(Node oldChild) {
214 initialize();
215 return super.removeChild(oldChild);
216 }
217
218 public Node cloneNode(boolean deep) {
219 initialize();
220 return super.cloneNode(deep);
221 }
222 }
--- EOF ---