Experimental support for embedded SVG in HTML5

git-svn-id: svn://svn.code.sf.net/p/writer2latex/code/trunk@146 f0f2a975-2e09-46c8-9428-3b39399b9f3c

source/java/writer2latex/util/SimpleXMLParser.java

@@ -0,0 +1,92 @@
+/************************************************************************
+ *
+ *  SimpleSAXHandler.java
+ *
+ *  This library is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Lesser General Public
+ *  License version 2.1, as published by the Free Software Foundation.
+ *
+ *  This library is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ *  Lesser General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Lesser General Public
+ *  License along with this library; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ *  MA  02111-1307  USA
+ *
+ *  Copyright: 2002-2012 by Henrik Just
+ *
+ *  All Rights Reserved.
+ * 
+ *  Version 1.4 (2012-04-01) 
+ * 
+ */
+
+package writer2latex.util;
+
+import java.io.IOException;
+import java.io.InputStream;
+
+import javax.xml.parsers.ParserConfigurationException;
+import javax.xml.parsers.SAXParser;
+import javax.xml.parsers.SAXParserFactory;
+
+import org.w3c.dom.Document;
+import org.xml.sax.Attributes;
+import org.xml.sax.SAXException;
+import org.xml.sax.helpers.DefaultHandler;
+
+
+/** A simple SAX based XML parser which transforms the SAX events into a DOM tree
+ *  (supporting element and text nodes only)
+ */
+public class SimpleXMLParser extends DefaultHandler {
+	
+	/** Static method to parse an XML input stream into a DOM tree
+	 * 
+	 * @param is the input stream to parse
+	 * @return a DOM tree of the document
+	 * @throws IOException if an error occurs reading the input stream
+	 * @throws SAXException if an error occurs parsing the stream
+	 */
+	public static Document parse(InputStream is) throws IOException, SAXException {
+		SAXParserFactory factory=SAXParserFactory.newInstance();
+		SimpleXMLParser handler = new SimpleXMLParser();
+		try {
+			SAXParser saxParser = factory.newSAXParser();
+			saxParser.parse(is,handler);
+			return handler.getDOM();
+		}
+		catch (ParserConfigurationException e) {
+			System.err.println("Oops - failed to get XML parser!?");
+			e.printStackTrace();
+		}
+		return null;
+	}
+
+	private SimpleDOMBuilder builder = new SimpleDOMBuilder();
+	
+	public org.w3c.dom.Document getDOM() {
+		return builder.getDOM();
+	}
+		
+	@Override public void startElement(String nameSpace, String localName, String qName, Attributes attributes){
+		builder.startElement(qName);
+		int nLen = attributes.getLength();
+		for (int i=0;i<nLen;i++) {
+			builder.setAttribute(attributes.getQName(i), attributes.getValue(i));
+		}
+	}
+	
+	@Override public void endElement(String nameSpace, String localName, String qName){
+		builder.endElement();
+	}
+
+	@Override public void characters(char[] characters, int nStart, int nEnd) throws SAXException {
+		builder.characters(new String(characters,nStart,nEnd));
+		
+	}
+
+}