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1
22
23 package org.xquark.util;
24
25 import java.util.*;
26
27 import org.xml.sax.*;
28
29 public class SAXLoader implements ContentHandler {
30 private static final String  RCSRevision = "$Revision: 1.2 $";
31 private static final String RCSName = "$Name: $";
32
33 private NamespaceContextStack contexts = new NamespaceContextStack();
34 private ElementHandler currentHandler = null;
35 private LinkedList handlers = new LinkedList();
36 private HashMap currentMap = new HashMap();
37 private Locator locator = null;
38
39 public SAXLoader(ElementHandler handler) {
40 this.currentHandler = handler;
41 }
42
43 public void setElementHandler(ElementHandler handler) {
44 this.currentHandler = handler;
45 }
46
47 public String getPrefixMapping(String prefix) {
48 return getNamespaceURI(prefix);
49 }
50
51 public HashMap getElementPrefixMap() {
52 if (currentMap.isEmpty()) return null;
53 return (HashMap)currentMap.clone();
54 }
55
56 public Locator getDocumentLocator() {
57 return locator;
58 }
59
60 public final void characters(char[] ch, int start, int length)
61 throws SAXException {
62 currentHandler.characters(ch, start, length);
63 }
64
65 public void endDocument() throws SAXException {
66 currentHandler = null;
67 }
68
69 public final void endElement(String namespaceURI, String localName, String qName)
70 throws SAXException {
71 contexts.popContext();
72 currentHandler = (ElementHandler)handlers.removeFirst();
73 int index = localName.indexOf(':');
74 if (index != -1) localName = localName.substring(index+1);
75 currentHandler.endElement(namespaceURI, localName);
76 }
77
78 public void endPrefixMapping(String prefix) throws SAXException {
79 }
80
81 public final void ignorableWhitespace(char[] ch, int start, int length)
82 throws SAXException {
83 currentHandler.ignorableWhitespace(ch, start, length);
84 }
85
86 public final void processingInstruction(String target, String data)
87 throws SAXException {
88 currentHandler.processingInstruction(target, data);
89 }
90
91 public void setDocumentLocator(Locator locator) {
92 this.locator = locator;
93 }
94
95 public final void skippedEntity(String name)
96 throws SAXException {
97 currentHandler.skippedEntity(name);
98 }
99
100 public void startDocument() throws SAXException {
101 contexts.reset();
102 currentMap.put("xml", "http://www.w3.org/XML/1998/namespace");
103 }
104
105 public final void startElement(String namespaceURI, String localName,
106 String qName, Attributes atts)
107 throws SAXException {
108 handlers.addFirst(currentHandler);
109 currentHandler = currentHandler.startElement(namespaceURI, localName, atts);
110 currentMap.clear();
111 contexts.pushContext();
112 }
113
114 public void startPrefixMapping(String prefix, String uri) throws SAXException {
115 contexts.declarePrefix(prefix, uri);
116 currentMap.put(prefix, uri);
117 }
118
119 public NamespaceContext getNamespaceContext() {
120 return contexts.getNamespaceContext();
121 }
122
123 public String getNamespaceURI(String prefix) {
124 return contexts.getNamespaceURI(prefix);
125 }
126
127 public String getPrefix(String uri) {
128 return contexts.getPrefix(uri);
129 }
130
131 public List getDeclaredPrefixes() {
132 return contexts.getDeclaredPrefixes();
133 }
134
135 public Collection getPrefixes() {
136 return contexts.getPrefixes();
137 }
138
139 public Collection getPrefixes(String uri) {
140 return contexts.getPrefixes(uri);
141 }
142 }
143 |
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