1 /*
2 * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 package com.sun.xml.internal.bind.v2.runtime;
27
28 import com.sun.istack.internal.FinalArrayList;
29 import com.sun.istack.internal.SAXException2;
30 import org.xml.sax.Attributes;
31 import org.xml.sax.SAXException;
32 import org.xml.sax.helpers.DefaultHandler;
33
34 import javax.xml.stream.XMLStreamException;
35 import java.io.IOException;
36
37 /**
38 * Receives SAX2 events and send the equivalent events to
39 * {@link XMLSerializer}
40 *
41 * @author
42 * Kohsuke Kawaguchi (kohsuke.kawaguchi@sun.com)
43 */
44 final class ContentHandlerAdaptor extends DefaultHandler {
45
46 /** Stores newly declared prefix-URI mapping. */
47 private final FinalArrayList<String> prefixMap = new FinalArrayList<String>();
48
49 /** Events will be sent to this object. */
50 private final XMLSerializer serializer;
51
52 private final StringBuffer text = new StringBuffer();
53
54
55 ContentHandlerAdaptor( XMLSerializer _serializer ) {
56 this.serializer = _serializer;
57 }
58
59 public void startDocument() {
60 prefixMap.clear();
61 }
62
63 public void startPrefixMapping(String prefix, String uri) {
64 prefixMap.add(prefix);
65 prefixMap.add(uri);
66 }
67
68 private boolean containsPrefixMapping(String prefix, String uri) {
69 for( int i=0; i<prefixMap.size(); i+=2 ) {
70 if(prefixMap.get(i).equals(prefix)
71 && prefixMap.get(i+1).equals(uri))
72 return true;
73 }
74 return false;
75 }
76
77 public void startElement(String namespaceURI, String localName, String qName, Attributes atts)
78 throws SAXException {
79 try {
80 flushText();
81
82 int len = atts.getLength();
83
84 String p = getPrefix(qName);
85
86 // is this prefix going to be declared on this element?
87 if(containsPrefixMapping(p,namespaceURI))
88 serializer.startElementForce(namespaceURI,localName,p,null);
89 else
90 serializer.startElement(namespaceURI,localName, p,null);
91
92 // declare namespace events
93 for (int i = 0; i < prefixMap.size(); i += 2) {
94 // forcibly set this binding, instead of using declareNsUri.
95 // this guarantees that namespaces used in DOM will show up
96 // as-is in the marshalled output (instead of reassigned to something else,
97 // which may happen if you'd use declareNsUri.)
98 serializer.getNamespaceContext().force(
99 prefixMap.get(i + 1), prefixMap.get(i));
100 }
101
102 // make sure namespaces needed by attributes are bound
103 for( int i=0; i<len; i++ ) {
104 String qname = atts.getQName(i);
105 if(qname.startsWith("xmlns") || atts.getURI(i).length() == 0)
106 continue;
107 String prefix = getPrefix(qname);
108
109 serializer.getNamespaceContext().declareNamespace(
110 atts.getURI(i), prefix, true );
111 }
112
113 serializer.endNamespaceDecls(null);
114 // fire attribute events
115 for( int i=0; i<len; i++ ) {
116 // be defensive.
117 if(atts.getQName(i).startsWith("xmlns"))
118 continue;
119 serializer.attribute( atts.getURI(i), atts.getLocalName(i), atts.getValue(i));
120 }
121 prefixMap.clear();
122 serializer.endAttributes();
123 } catch (IOException e) {
124 throw new SAXException2(e);
125 } catch (XMLStreamException e) {
126 throw new SAXException2(e);
127 }
128 }
129
130 private String getPrefix(String qname) {
131 int idx = qname.indexOf(':');
132 String prefix = (idx == -1) ? "" : qname.substring(0, idx);
133 return prefix;
134 }
135
136 public void endElement(String namespaceURI, String localName, String qName) throws SAXException {
137 try {
138 flushText();
139 serializer.endElement();
140 } catch (IOException e) {
141 throw new SAXException2(e);
142 } catch (XMLStreamException e) {
143 throw new SAXException2(e);
144 }
145 }
146
147 private void flushText() throws SAXException, IOException, XMLStreamException {
148 if( text.length()!=0 ) {
149 serializer.text(text.toString(),null);
150 text.setLength(0);
151 }
152 }
153
154 public void characters(char[] ch, int start, int length) {
155 text.append(ch,start,length);
156 }
157 }