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
31 import org.xml.sax.Attributes;
32 import org.xml.sax.SAXException;
33 import org.xml.sax.helpers.DefaultHandler;
34
35 import javax.xml.stream.XMLStreamException;
36 import java.io.IOException;
37
38 /**
39 * Receives SAX2 events and send the equivalent events to
40 * {@link XMLSerializer}
41 *
42 * @author
43 * Kohsuke Kawaguchi (kohsuke.kawaguchi@sun.com)
44 */
45 final class ContentHandlerAdaptor extends DefaultHandler {
46
47 /** Stores newly declared prefix-URI mapping. */
48 private final FinalArrayList<String> prefixMap = new FinalArrayList<String>();
49
50 /** Events will be sent to this object. */
51 private final XMLSerializer serializer;
52
53 private final StringBuffer text = new StringBuffer();
54
55
56 ContentHandlerAdaptor( XMLSerializer _serializer ) {
57 this.serializer = _serializer;
58 }
59
60 public void startDocument() {
61 prefixMap.clear();
62 }
63
64 public void startPrefixMapping(String prefix, String uri) {
65 prefixMap.add(prefix);
66 prefixMap.add(uri);
67 }
68
69 private boolean containsPrefixMapping(String prefix, String uri) {
70 for( int i=0; i<prefixMap.size(); i+=2 ) {
71 if(prefixMap.get(i).equals(prefix)
72 && prefixMap.get(i+1).equals(uri))
73 return true;
74 }
75 return false;
76 }
77
78 public void startElement(String namespaceURI, String localName, String qName, Attributes atts)
79 throws SAXException {
80 try {
81 flushText();
82
83 int len = atts.getLength();
84
85 String p = getPrefix(qName);
86
87 // is this prefix going to be declared on this element?
88 if(containsPrefixMapping(p,namespaceURI))
89 serializer.startElementForce(namespaceURI,localName,p,null);
90 else
91 serializer.startElement(namespaceURI,localName, p,null);
92
93 // declare namespace events
94 for (int i = 0; i < prefixMap.size(); i += 2) {
95 // forcibly set this binding, instead of using declareNsUri.
96 // this guarantees that namespaces used in DOM will show up
97 // as-is in the marshalled output (instead of reassigned to something else,
98 // which may happen if you'd use declareNsUri.)
99 serializer.getNamespaceContext().force(
100 prefixMap.get(i + 1), prefixMap.get(i));
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 // make sure namespaces needed by attributes are bound
131 private String getPrefix(String qname) {
132 int idx = qname.indexOf(':');
133 String prefix = (idx == -1) ? "" : qname.substring(0, idx);
134 return prefix;
135 }
136
137 public void endElement(String namespaceURI, String localName, String qName) throws SAXException {
138 try {
139 flushText();
140 serializer.endElement();
141 } catch (IOException e) {
142 throw new SAXException2(e);
143 } catch (XMLStreamException e) {
144 throw new SAXException2(e);
145 }
146 }
147
148 private void flushText() throws SAXException, IOException, XMLStreamException {
149 if( text.length()!=0 ) {
150 serializer.text(text.toString(),null);
151 text.setLength(0);
152 }
153 }
154
155 public void characters(char[] ch, int start, int length) {
156 text.append(ch,start,length);
157 }
158 }