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Java > Open Source Codes > org > apache > batik > svggen > font > table > FeatureList


1 /*
2
3    Copyright 2001,2003 The Apache Software Foundation
4
5    Licensed under the Apache License, Version 2.0 (the "License");
6    you may not use this file except in compliance with the License.
7    You may obtain a copy of the License at
8
9        http://www.apache.org/licenses/LICENSE-2.0
10
11    Unless required by applicable law or agreed to in writing, software
12    distributed under the License is distributed on an "AS IS" BASIS,
13    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14    See the License for the specific language governing permissions and
15    limitations under the License.
16
17  */
18 package org.apache.batik.svggen.font.table;
19
20 import java.io.IOException JavaDoc;
21 import java.io.RandomAccessFile JavaDoc;
22
23 /**
24  *
25  * @author <a HREF="mailto:david@steadystate.co.uk">David Schweinsberg</a>
26  * @version $Id: FeatureList.java,v 1.4 2004/08/18 07:15:20 vhardy Exp $
27  */
28 public class FeatureList {
29
30     private int featureCount;
31     private FeatureRecord[] featureRecords;
32     private Feature[] features;
33
34     /** Creates new FeatureList */
35     public FeatureList(RandomAccessFile JavaDoc raf, int offset) throws IOException JavaDoc {
36         raf.seek(offset);
37         featureCount = raf.readUnsignedShort();
38         featureRecords = new FeatureRecord[featureCount];
39         features = new Feature[featureCount];
40         for (int i = 0; i < featureCount; i++) {
41             featureRecords[i] = new FeatureRecord(raf);
42         }
43         for (int i = 0; i < featureCount; i++) {
44             features[i] = new Feature(raf, offset + featureRecords[i].getOffset());
45         }
46     }
47
48     public Feature findFeature(LangSys langSys, String JavaDoc tag) {
49         if (tag.length() != 4) {
50             return null;
51         }
52         int tagVal = ((tag.charAt(0)<<24)
53             | (tag.charAt(1)<<16)
54             | (tag.charAt(2)<<8)
55             | tag.charAt(3));
56         for (int i = 0; i < featureCount; i++) {
57             if (featureRecords[i].getTag() == tagVal) {
58                 if (langSys.isFeatureIndexed(i)) {
59                     return features[i];
60                 }
61             }
62         }
63         return null;
64     }
65
66 }
67
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