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/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
package com.sun.star.script.framework.container;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.lang.reflect.Method;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import org.w3c.dom.Document;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import org.xml.sax.SAXParseException;
public class XMLParserFactory {
private static XMLParser parser = null;
private static String officedtdurl = null;
private XMLParserFactory() {}
public static synchronized XMLParser getParser() {
if (parser == null)
parser = new DefaultParser();
return parser;
}
public static void setOfficeDTDURL(String url) {
officedtdurl = url;
}
private static class DefaultParser implements XMLParser {
private final DocumentBuilderFactory factory;
public DefaultParser() {
factory = DocumentBuilderFactory.newInstance();
}
public Document parse(InputStream inputStream) throws IOException {
Document result = null;
try {
DocumentBuilder builder = factory.newDocumentBuilder();
InputSource is = new InputSource(inputStream);
if (officedtdurl != null) {
is.setSystemId(officedtdurl);
}
result = builder.parse(is);
} catch (SAXParseException ex1) {
IOException ex2 = new IOException();
ex2.initCause(ex1);
throw ex2;
} catch (SAXException ex1) {
IOException ex2 = new IOException();
ex2.initCause(ex1);
throw ex2;
} catch (ParserConfigurationException ex1) {
IOException ex2 = new IOException();
ex2.initCause(ex1);
throw ex2;
}
return result;
}
public void write(Document doc, OutputStream out) throws IOException {
Class<?> clazz = doc.getClass();
String name = clazz.getName();
// depending on the class of the Document object use introspection
// to invoke the appropriate methods for writing the XML
// this code is based on the code used by the NetBeans
// class XMLUtilImpl in the openide module
try {
if (name.equals("com.sun.xml.tree.XmlDocument") ||
name.equals("org.apache.crimson.tree.XmlDocument")) {
// these DOM implementations are self writing
Method write;
write = clazz.getDeclaredMethod("write",
new Class[] {OutputStream.class});
write.invoke(doc, new Object[] {out});
} else {
// try xerces serialize package using introspection
ClassLoader cl = this.getClass().getClassLoader();
Class<?> serializerClass = null;
Class<?> formatterClass = null;
try {
serializerClass =
Class.forName("org.apache.xml.serialize.XMLSerializer",
true, cl);
formatterClass =
Class.forName("org.apache.xml.serialize.OutputFormat",
true, cl);
} catch (ClassNotFoundException cnfe) {
String prefix = "com.sun.org.apache.xml.internal.";
serializerClass =
Class.forName(prefix + "serialize.XMLSerializer",
true, cl);
formatterClass =
Class.forName(prefix + "serialize.OutputFormat",
true, cl);
}
Object serializerObject = serializerClass.newInstance();
Object formatterObject = formatterClass.newInstance();
// improve output readability using the OutputFormat class
Method method =
formatterClass.getMethod("setMethod",
new Class[] {String.class});
method.invoke(formatterObject, new Object[] {"xml"});
method = formatterClass.getMethod("setIndenting",
new Class[] {Boolean.TYPE});
method.invoke(formatterObject, new Object[] {Boolean.TRUE});
// now set up an instance of XMLSerializer with our
// OutputStream and serialize our Document
method = serializerClass.getMethod("setOutputByteStream",
new Class[] {OutputStream.class});
method.invoke(serializerObject, new Object[] {out});
method = serializerClass.getMethod("setOutputFormat",
new Class[] {formatterClass});
method.invoke(serializerObject, new Object[] {formatterObject});
method = serializerClass.getMethod("asDOMSerializer", new Class[0]);
Object impl = method.invoke(serializerObject, new Object[0]);
method = impl.getClass().getMethod("serialize",
new Class[] {Document.class});
method.invoke(impl, new Object[] {doc});
}
} catch (NoSuchMethodException ex1) {
IOException ex2 = new IOException();
ex2.initCause(ex1);
throw ex2;
} catch (ClassNotFoundException ex1) {
IOException ex2 = new IOException();
ex2.initCause(ex1);
throw ex2;
} catch (Exception ex1) {
IOException ex2 = new IOException();
ex2.initCause(ex1);
throw ex2;
}
}
}
}
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