001 /*
002 $Id: SAXBuilder.java,v 1.4 2004/04/27 02:25:29 spullara Exp $
003
004 Copyright 2003 (C) James Strachan and Bob Mcwhirter. All Rights Reserved.
005
006 Redistribution and use of this software and associated documentation
007 ("Software"), with or without modification, are permitted provided
008 that the following conditions are met:
009
010 1. Redistributions of source code must retain copyright
011 statements and notices. Redistributions must also contain a
012 copy of this document.
013
014 2. Redistributions in binary form must reproduce the
015 above copyright notice, this list of conditions and the
016 following disclaimer in the documentation and/or other
017 materials provided with the distribution.
018
019 3. The name "groovy" must not be used to endorse or promote
020 products derived from this Software without prior written
021 permission of The Codehaus. For written permission,
022 please contact info@codehaus.org.
023
024 4. Products derived from this Software may not be called "groovy"
025 nor may "groovy" appear in their names without prior written
026 permission of The Codehaus. "groovy" is a registered
027 trademark of The Codehaus.
028
029 5. Due credit should be given to The Codehaus -
030 http://groovy.codehaus.org/
031
032 THIS SOFTWARE IS PROVIDED BY THE CODEHAUS AND CONTRIBUTORS
033 ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT
034 NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
035 FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
036 THE CODEHAUS OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
037 INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
038 (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
039 SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
040 HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
041 STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
042 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
043 OF THE POSSIBILITY OF SUCH DAMAGE.
044
045 */
046 package groovy.xml;
047
048 import groovy.util.BuilderSupport;
049
050 import java.util.Iterator;
051 import java.util.Map;
052
053 import org.xml.sax.Attributes;
054 import org.xml.sax.ContentHandler;
055 import org.xml.sax.SAXException;
056 import org.xml.sax.helpers.AttributesImpl;
057
058 /**
059 * A helper class for creating a W3C D
060 *
061 * @author <a href="mailto:james@coredevelopers.net">James Strachan</a>
062 * @version $Revision: 1.4 $
063 */
064 public class SAXBuilder extends BuilderSupport {
065
066 private ContentHandler handler;
067 private Attributes emptyAttributes = new AttributesImpl();
068
069 public SAXBuilder(ContentHandler handler) {
070 this.handler = handler;
071 }
072
073 protected void setParent(Object parent, Object child) {
074 }
075
076 protected Object createNode(Object name) {
077 doStartElement(name, emptyAttributes);
078 return name;
079 }
080
081 protected Object createNode(Object name, Object value) {
082 doStartElement(name, emptyAttributes);
083 doText(value);
084 return name;
085 }
086
087 /**
088 * @param value
089 */
090 private void doText(Object value) {
091 try {
092 char[] text = value.toString().toCharArray();
093 handler.characters(text, 0, text.length);
094 }
095 catch (SAXException e) {
096 handleException(e);
097 }
098 }
099
100 protected Object createNode(Object name, Map attributeMap, Object text) {
101 AttributesImpl attributes = new AttributesImpl();
102 for (Iterator iter = attributeMap.entrySet().iterator(); iter.hasNext();) {
103 Map.Entry entry = (Map.Entry) iter.next();
104 Object key = entry.getKey();
105 Object value = entry.getValue();
106 String uri = "";
107 String localName = null;
108 String qualifiedName = "";
109 String valueText = (value != null) ? value.toString() : "";
110 if (key instanceof QName) {
111 QName qname = (QName) key;
112 uri = qname.getNamespaceURI();
113 localName = qname.getLocalPart();
114 qualifiedName = qname.getQualifiedName();
115 }
116 else {
117 localName = key.toString();
118 qualifiedName = localName;
119 }
120
121 attributes.addAttribute(uri, localName, qualifiedName, "CDATA", valueText);
122 }
123 doStartElement(name, attributes);
124 if (text != null) {
125 doText(text);
126 }
127 return name;
128 }
129
130 protected void doStartElement(Object name, Attributes attributes) {
131 String uri = "";
132 String localName = null;
133 String qualifiedName = "";
134 if (name instanceof QName) {
135 QName qname = (QName) name;
136 uri = qname.getNamespaceURI();
137 localName = qname.getLocalPart();
138 qualifiedName = qname.getQualifiedName();
139 }
140 else {
141 localName = name.toString();
142 qualifiedName = localName;
143 }
144 try {
145 handler.startElement(uri, localName, qualifiedName, attributes);
146 }
147 catch (SAXException e) {
148 handleException(e);
149 }
150 }
151
152 protected void nodeCompleted(Object parent, Object name) {
153 String uri = "";
154 String localName = null;
155 String qualifiedName = "";
156 if (name instanceof QName) {
157 QName qname = (QName) name;
158 uri = qname.getNamespaceURI();
159 localName = qname.getLocalPart();
160 qualifiedName = qname.getQualifiedName();
161 }
162 else {
163 localName = name.toString();
164 qualifiedName = localName;
165 }
166 try {
167 handler.endElement(uri, localName, qualifiedName);
168 }
169 catch (SAXException e) {
170 handleException(e);
171 }
172 }
173
174 protected void handleException(SAXException e) {
175 throw new RuntimeException(e);
176 }
177
178 /* (non-Javadoc)
179 * @see groovy.util.BuilderSupport#createNode(java.lang.Object, java.util.Map, java.lang.Object)
180 */
181 protected Object createNode(Object name, Map attributes) {
182 return createNode(name, attributes, null);
183 }
184 }