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1
11 package org.eclipse.pde.internal.core;
12
13 import java.io.StringReader  ;
14 import java.util.Stack ;
15
16 import javax.xml.parsers.DocumentBuilderFactory ;
17 import javax.xml.parsers.ParserConfigurationException ;
18
19 import org.w3c.dom.Element ;
20 import org.w3c.dom.Node ;
21 import org.w3c.dom.Text ;
22 import org.xml.sax.Attributes ;
23 import org.xml.sax.InputSource ;
24 import org.xml.sax.Locator ;
25 import org.xml.sax.SAXException ;
26 import org.xml.sax.helpers.DefaultHandler ;
27
28 public class XMLDefaultHandler extends DefaultHandler {
29
30 private org.w3c.dom.Document fDocument;
31 private Element fRootElement;
32
33 protected Stack fElementStack = new Stack ();
34 protected boolean fAbbreviated;
35
36 public XMLDefaultHandler() {
37 }
38
39 public XMLDefaultHandler(boolean abbreviated) {
40 fAbbreviated = abbreviated;
41 }
42
43 public void startElement(String uri, String localName, String qName, Attributes attributes) throws SAXException {
44 if (!isPrepared())
45 return;
46 Element element = fDocument.createElement(qName);
47 for (int i = 0; i < attributes.getLength(); i++) {
48 element.setAttribute(attributes.getQName(i), attributes.getValue(i));
49 }
50
51 if (fRootElement == null)
52 fRootElement = element;
53 else
54 ((Element )fElementStack.peek()).appendChild(element);
55 fElementStack.push(element);
56 }
57
58 public void endElement(String uri, String localName, String qName) throws SAXException {
59 if (isPrepared() && !fElementStack.isEmpty())
60 fElementStack.pop();
61 }
62
63
66 public void setDocumentLocator(Locator locator) {
67 }
68
69
72 public void startDocument() throws SAXException {
73 DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
74 try {
75 fDocument = factory.newDocumentBuilder().newDocument();
76 } catch (ParserConfigurationException e) {
77 }
78 }
79
80
83 public void endDocument() throws SAXException {
84 if (isPrepared())
85 fDocument.appendChild(fRootElement);
86 }
87
88
91 public void processingInstruction(String target, String data) throws SAXException {
92 if (isPrepared())
93 fDocument.appendChild(fDocument.createProcessingInstruction(target, data));
94 }
95
96
99 public void characters(char[] characters, int start, int length) throws SAXException {
100 if (fAbbreviated || !isPrepared())
101 return;
102 StringBuffer buff = new StringBuffer ();
103 for (int i = 0; i < length; i++) {
104 buff.append(characters[start + i]);
105 }
106 Text text = fDocument.createTextNode(buff.toString());
107 if (fRootElement == null)
108 fDocument.appendChild(text);
109 else
110 ((Element )fElementStack.peek()).appendChild(text);
111 }
112
113 public Node getDocumentElement() {
114 if (!isPrepared())
115 return null;
116 normalizeDocumentElement();
117 return fDocument.getDocumentElement();
118 }
119
120 public org.w3c.dom.Document getDocument() {
121 if (!isPrepared())
122 return null;
123 normalizeDocumentElement();
124 return fDocument;
125 }
126
127 public boolean isPrepared() {
128 return fDocument != null;
129 }
130
131 private void normalizeDocumentElement() {
132 if (fDocument.getDocumentElement() != null)
133 fDocument.getDocumentElement().normalize();
134 }
135
136 public InputSource resolveEntity(String publicId, String systemId) throws SAXException {
137 return new InputSource (new StringReader ("")); }
142
143 }
144 |
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