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1 /*
2 * reserved comment block
3 * DO NOT REMOVE OR ALTER!
4 */
5 /*
6 * The Apache Software License, Version 1.1
7 *
8 *
9 * Copyright (c) 2000-2002 The Apache Software Foundation. All rights
10 * reserved.
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 *
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 *
19 * 2. Redistributions in binary form must reproduce the above copyright
20 * notice, this list of conditions and the following disclaimer in
21 * the documentation and/or other materials provided with the
22 * distribution.
23 *
24 * 3. The end-user documentation included with the redistribution,
25 * if any, must include the following acknowledgment:
26 * "This product includes software developed by the
27 * Apache Software Foundation (http://www.apache.org/)."
28 * Alternately, this acknowledgment may appear in the software itself,
29 * if and wherever such third-party acknowledgments normally appear.
30 *
31 * 4. The names "Xerces" and "Apache Software Foundation" must
32 * not be used to endorse or promote products derived from this
33 * software without prior written permission. For written
34 * permission, please contact apache@apache.org.
35 *
36 * 5. Products derived from this software may not be called "Apache",
37 * nor may "Apache" appear in their name, without prior written
38 * permission of the Apache Software Foundation.
39 *
40 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
41 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
42 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
43 * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
44 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
45 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
46 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
47 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
48 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
49 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
50 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
51 * SUCH DAMAGE.
52 * ====================================================================
53 *
54 * This software consists of voluntary contributions made by many
55 * individuals on behalf of the Apache Software Foundation and was
56 * originally based on software copyright (c) 1999, International
57 * Business Machines, Inc., http://www.apache.org. For more
58 * information on the Apache Software Foundation, please see
59 * <http://www.apache.org/>.
60 */
61 package com.sun.org.apache.xerces.internal.util;
62
63 import com.sun.org.apache.xerces.internal.impl.xs.util.SimpleLocator;
64 import com.sun.org.apache.xerces.internal.jaxp.validation.WrappedSAXException;
65 import com.sun.org.apache.xerces.internal.xni.QName;
66 import com.sun.org.apache.xerces.internal.xni.XMLAttributes;
67 import com.sun.org.apache.xerces.internal.xni.XMLDocumentHandler;
68 import com.sun.org.apache.xerces.internal.xni.XMLLocator;
69 import com.sun.org.apache.xerces.internal.xni.XMLString;
70 import com.sun.org.apache.xerces.internal.xni.parser.XMLDocumentSource;
71 import org.xml.sax.Attributes;
72 import org.xml.sax.ContentHandler;
73 import org.xml.sax.Locator;
74 import org.xml.sax.SAXException;
75
76 /**
77 * Receves SAX {@link ContentHandler} events
78 * and produces the equivalent {@link XMLDocumentHandler} events.
79 *
80 * @author
81 * Kohsuke Kawaguchi (kohsuke.kawaguchi@sun.com)
82 */
83 public class SAX2XNI implements ContentHandler, XMLDocumentSource {
84 public SAX2XNI( XMLDocumentHandler core ) {
85 this.fCore = core;
86 }
87
88 private XMLDocumentHandler fCore;
89
90 private final NamespaceSupport nsContext = new NamespaceSupport();
91 private final SymbolTable symbolTable = new SymbolTable();
92
93
94 public void setDocumentHandler(XMLDocumentHandler handler) {
95 fCore = handler;
96 }
97
98 public XMLDocumentHandler getDocumentHandler() {
99 return fCore;
100 }
101
102
103 //
104 //
105 // ContentHandler implementation
106 //
107 //
108 public void startDocument() throws SAXException {
109 try {
110 nsContext.reset();
111
112 XMLLocator xmlLocator;
113 if(locator==null)
114 // some SAX source doesn't provide a locator,
115 // in which case we assume no line information is available
116 // and use a dummy locator. With this, downstream components
117 // can always assume that they will get a non-null Locator.
118 xmlLocator=new SimpleLocator(null,null,-1,-1);
119 else
120 xmlLocator=new LocatorWrapper(locator);
121
122 fCore.startDocument(
123 xmlLocator,
124 null,
125 nsContext,
126 null);
127 } catch( WrappedSAXException e ) {
128 throw e.exception;
129 }
130 }
131
132 public void endDocument() throws SAXException {
133 try {
134 fCore.endDocument(null);
135 } catch( WrappedSAXException e ) {
136 throw e.exception;
137 }
138 }
139
140 public void startElement( String uri, String local, String qname, Attributes att ) throws SAXException {
141 try {
142 fCore.startElement(createQName(uri,local,qname),createAttributes(att),null);
143 } catch( WrappedSAXException e ) {
144 throw e.exception;
145 }
146 }
147
148 public void endElement( String uri, String local, String qname ) throws SAXException {
149 try {
150 fCore.endElement(createQName(uri,local,qname),null);
151 } catch( WrappedSAXException e ) {
152 throw e.exception;
153 }
154 }
155
156 public void characters( char[] buf, int offset, int len ) throws SAXException {
157 try {
158 fCore.characters(new XMLString(buf,offset,len),null);
159 } catch( WrappedSAXException e ) {
160 throw e.exception;
161 }
162 }
163
164 public void ignorableWhitespace( char[] buf, int offset, int len ) throws SAXException {
165 try {
166 fCore.ignorableWhitespace(new XMLString(buf,offset,len),null);
167 } catch( WrappedSAXException e ) {
168 throw e.exception;
169 }
170 }
171
172 public void startPrefixMapping( String prefix, String uri ) {
173 nsContext.pushContext();
174 nsContext.declarePrefix(prefix,uri);
175 }
176
177 public void endPrefixMapping( String prefix ) {
178 nsContext.popContext();
179 }
180
181 public void processingInstruction( String target, String data ) throws SAXException {
182 try {
183 fCore.processingInstruction(
184 symbolize(target),createXMLString(data),null);
185 } catch( WrappedSAXException e ) {
186 throw e.exception;
187 }
188 }
189
190 public void skippedEntity( String name ) {
191 }
192
193 private Locator locator;
194 public void setDocumentLocator( Locator _loc ) {
195 this.locator = _loc;
196 }
197
198 /** Creates a QName object. */
199 private QName createQName(String uri, String local, String raw) {
200
201 int idx = raw.indexOf(':');
202
203 if( local.length()==0 ) {
204 // if naemspace processing is turned off, local could be "".
205 // in that case, treat everything to be in the no namespace.
206 uri = "";
207 if(idx<0)
208 local = raw;
209 else
210 local = raw.substring(idx+1);
211 }
212
213 String prefix;
214 if (idx < 0)
215 prefix = null;
216 else
217 prefix = raw.substring(0, idx);
218
219 if (uri != null && uri.length() == 0)
220 uri = null; // XNI uses null whereas SAX uses the empty string
221
222 return new QName(symbolize(prefix), symbolize(local), symbolize(raw), symbolize(uri));
223 }
224
225 /** Symbolizes the specified string. */
226 private String symbolize(String s) {
227 if (s == null)
228 return null;
229 else
230 return symbolTable.addSymbol(s);
231 }
232
233 private XMLString createXMLString(String str) {
234 // with my patch
235 // return new XMLString(str);
236
237 // for now
238 return new XMLString(str.toCharArray(), 0, str.length());
239 }
240
241
242 /** only one instance of XMLAttributes is used. */
243 private final XMLAttributes xa = new XMLAttributesImpl();
244
245 /** Creates an XMLAttributes object. */
246 private XMLAttributes createAttributes(Attributes att) {
247 xa.removeAllAttributes();
248 int len = att.getLength();
249 for (int i = 0; i < len; i++)
250 xa.addAttribute(
251 createQName(att.getURI(i), att.getLocalName(i), att.getQName(i)),
252 att.getType(i),
253 att.getValue(i));
254 return xa;
255 }
256 }