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 boolean isIFD(TIFFField f) {
42 int type = f.getType();
43 return f.hasDirectory() &&
44 (type == TIFFTag.TIFF_LONG || type == TIFFTag.TIFF_IFD_POINTER);
45 }
46
47 private static String getNodeName(TIFFField f) {
48 return isIFD(f) ? "TIFFIFD" : "TIFFField";
49 }
50
51 private boolean isIFD;
52
53 private Boolean isInitialized = Boolean.FALSE;
54
55 private TIFFField field;
56
57 public TIFFFieldNode(TIFFField field) {
58 super(getNodeName(field));
59
60 isIFD = isIFD(field);
61
62 this.field = field;
63
64 TIFFTag tag = field.getTag();
65 int tagNumber = tag.getNumber();
66 String tagName = tag.getName();
67
68 if(isIFD) {
69 if(tagNumber != 0) {
70 setAttribute("parentTagNumber", Integer.toString(tagNumber));
71 }
72 if(tagName != null) {
73 setAttribute("parentTagName", tagName);
74 }
75
76 TIFFDirectory dir = field.hasDirectory() ?
77 field.getDirectory() : (TIFFDirectory)field.getData();
78 TIFFTagSet[] tagSets = dir.getTagSets();
79 if(tagSets != null) {
80 StringBuilder tagSetNames = new StringBuilder();
81 for(int i = 0; i < tagSets.length; i++) {
82 tagSetNames.append(tagSets[i].getClass().getName());
83 if(i != tagSets.length - 1) {
84 tagSetNames.append(",");
85 }
86 }
87 setAttribute("tagSets", tagSetNames.toString());
88 }
89 } else {
90 setAttribute("number", Integer.toString(tagNumber));
91 setAttribute("name", tagName);
92 }
93 }
94
95 private synchronized void initialize() {
96 if(isInitialized) return;
97
98 if(isIFD) {
99 TIFFDirectory dir = field.hasDirectory() ?
100 field.getDirectory() : (TIFFDirectory)field.getData();
101 TIFFField[] fields = dir.getTIFFFields();
102 if(fields != null) {
103 TIFFTagSet[] tagSets = dir.getTagSets();
104 List<TIFFTagSet> tagSetList = Arrays.asList(tagSets);
105 int numFields = fields.length;
106 for(int i = 0; i < numFields; i++) {
107 TIFFField f = fields[i];
108 int tagNumber = f.getTagNumber();
109 TIFFTag tag = TIFFIFD.getTag(tagNumber, tagSetList);
110
111 Node node = f.getAsNativeNode();
112
113 if (node != null) {
114 appendChild(node);
115 }
116 }
117 }
118 } else {
119 IIOMetadataNode child;
120 int count = field.getCount();
121 if (field.getType() == TIFFTag.TIFF_UNDEFINED) {
122 child = new IIOMetadataNode("TIFFUndefined");
123
124 byte[] data = field.getAsBytes();
125 StringBuffer sb = new StringBuffer();
126 for (int i = 0; i < count; i++) {
127 sb.append(Integer.toString(data[i] & 0xff));
128 if (i < count - 1) {
129 sb.append(",");
130 }
131 }
132 child.setAttribute("value", sb.toString());
133 } else {
134 child = new IIOMetadataNode("TIFF" +
135 TIFFField.getTypeName(field.getType()) +
136 "s");
137
138 TIFFTag tag = field.getTag();
139
140 for (int i = 0; i < count; i++) {
141 IIOMetadataNode cchild =
142 new IIOMetadataNode("TIFF" +
143 TIFFField.getTypeName(field.getType()));
144
145 cchild.setAttribute("value", field.getValueAsString(i));
146 if (tag.hasValueNames() && field.isIntegral()) {
147 int value = field.getAsInt(i);
148 String name = tag.getValueName(value);
149 if (name != null) {
150 cchild.setAttribute("description", name);
151 }
152 }
153
154 child.appendChild(cchild);
155 }
156 }
157 appendChild(child);
158 }
159
160 isInitialized = Boolean.TRUE;
161 }
162
163 // Need to override this method to avoid a stack overflow exception
164 // which will occur if super.appendChild is called from initialize().
165 public Node appendChild(Node newChild) {
166 if (newChild == null) {
167 throw new NullPointerException("newChild == null!");
168 }
169
170 return super.insertBefore(newChild, null);
171 }
172
173 // Override all methods which refer to child nodes.
174
175 public boolean hasChildNodes() {
176 initialize();
177 return super.hasChildNodes();
178 }
179
180 public int getLength() {
181 initialize();
182 return super.getLength();
183 }
184
185 public Node getFirstChild() {
186 initialize();
187 return super.getFirstChild();
188 }
189
190 public Node getLastChild() {
191 initialize();
192 return super.getLastChild();
193 }
194
195 public Node getPreviousSibling() {
196 initialize();
197 return super.getPreviousSibling();
198 }
199
200 public Node getNextSibling() {
201 initialize();
202 return super.getNextSibling();
203 }
204
205 public Node insertBefore(Node newChild,
206 Node refChild) {
207 initialize();
208 return super.insertBefore(newChild, refChild);
209 }
210
211 public Node replaceChild(Node newChild,
212 Node oldChild) {
213 initialize();
214 return super.replaceChild(newChild, oldChild);
215 }
216
217 public Node removeChild(Node oldChild) {
218 initialize();
219 return super.removeChild(oldChild);
220 }
221
222 public Node cloneNode(boolean deep) {
223 initialize();
224 return super.cloneNode(deep);
225 }
226 }
--- EOF ---