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1 package com.thoughtworks.xstream.io.xml.xppdom;
2
3 import org.xmlpull.mxp1.MXParser;
4 import org.xmlpull.v1.XmlPullParser;
5
6 import java.io.Reader  ;
7 import java.util.ArrayList ;
8 import java.util.List ;
9
10 public class Xpp3DomBuilder {
11 public static Xpp3Dom build(Reader reader)
12 throws Exception {
13 List elements = new ArrayList ();
14
15 List values = new ArrayList ();
16
17 Xpp3Dom configuration = null;
18
19 XmlPullParser parser = new MXParser();
20
21 parser.setInput(reader);
22
23 int eventType = parser.getEventType();
24
25 while (eventType != XmlPullParser.END_DOCUMENT) {
26 if (eventType == XmlPullParser.START_TAG) {
27 String rawName = parser.getName();
28
29 Xpp3Dom childConfiguration = createConfiguration(rawName);
30
31 int depth = elements.size();
32
33 if (depth > 0) {
34 Xpp3Dom parent = (Xpp3Dom) elements.get(depth - 1);
35
36 parent.addChild(childConfiguration);
37 }
38
39 elements.add(childConfiguration);
40
41 values.add(new StringBuffer ());
42
43 int attributesSize = parser.getAttributeCount();
44
45 for (int i = 0; i < attributesSize; i++) {
46 String name = parser.getAttributeName(i);
47
48 String value = parser.getAttributeValue(i);
49
50 childConfiguration.setAttribute(name, value);
51 }
52 } else if (eventType == XmlPullParser.TEXT) {
53 int depth = values.size() - 1;
54
55 StringBuffer valueBuffer = (StringBuffer ) values.get(depth);
56
57 valueBuffer.append(parser.getText());
58 } else if (eventType == XmlPullParser.END_TAG) {
59 int depth = elements.size() - 1;
60
61 Xpp3Dom finishedConfiguration = (Xpp3Dom) elements.remove(depth);
62
63 String accumulatedValue = (values.remove(depth)).toString();
64
65 if (finishedConfiguration.getChildCount() == 0) {
66 String finishedValue;
67
68 if (0 == accumulatedValue.length()) {
69 finishedValue = null;
70 } else {
71 finishedValue = accumulatedValue;
72 }
73
74 finishedConfiguration.setValue(finishedValue);
75 }
76
77 if (0 == depth) {
78 configuration = finishedConfiguration;
79 }
80 }
81
82 eventType = parser.next();
83 }
84
85 reader.close();
86
87 return configuration;
88 }
89
90 private static Xpp3Dom createConfiguration(String localName) {
91 return new Xpp3Dom(localName);
92 }
93 } |
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