| /* |
| * The Apache Software License, Version 1.1 |
| * |
| * |
| * Copyright (c) 1999 The Apache Software Foundation. All rights |
| * reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in |
| * the documentation and/or other materials provided with the |
| * distribution. |
| * |
| * 3. The end-user documentation included with the redistribution, |
| * if any, must include the following acknowledgment: |
| * "This product includes software developed by the |
| * Apache Software Foundation (http://www.apache.org/)." |
| * Alternately, this acknowledgment may appear in the software itself, |
| * if and wherever such third-party acknowledgments normally appear. |
| * |
| * 4. The names "Xalan" and "Apache Software Foundation" must |
| * not be used to endorse or promote products derived from this |
| * software without prior written permission. For written |
| * permission, please contact apache@apache.org. |
| * |
| * 5. Products derived from this software may not be called "Apache", |
| * nor may "Apache" appear in their name, without prior written |
| * permission of the Apache Software Foundation. |
| * |
| * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED |
| * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR |
| * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
| * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
| * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| * ==================================================================== |
| * |
| * This software consists of voluntary contributions made by many |
| * individuals on behalf of the Apache Software Foundation and was |
| * originally based on software copyright (c) 1999, Lotus |
| * Development Corporation., http://www.lotus.com. For more |
| * information on the Apache Software Foundation, please see |
| * <http://www.apache.org/>. |
| */ |
| package org.apache.xalan.transformer; |
| |
| import java.io.Writer; |
| import java.io.OutputStream; |
| |
| import java.util.Properties; |
| |
| import org.apache.xalan.templates.StylesheetRoot; |
| |
| import org.xml.sax.ContentHandler; |
| |
| import javax.xml.transform.TransformerException; |
| import javax.xml.transform.OutputKeys; |
| |
| import org.apache.xalan.serialize.Serializer; |
| import org.apache.xalan.serialize.SerializerFactory; |
| import org.apache.xalan.serialize.Method; |
| import org.apache.xalan.templates.OutputProperties; |
| |
| /** |
| * This is a helper class that decides if Xalan needs to switch |
| * serializers, based on the first output element. |
| */ |
| public class SerializerSwitcher |
| { |
| |
| /** |
| * Switch to HTML serializer if element is HTML |
| * |
| * |
| * @param transformer Non-null transformer instance |
| * @param ns Namespace URI of the element |
| * @param localName Local part of name of element |
| * |
| * @throws TransformerException |
| */ |
| public static void switchSerializerIfHTML( |
| TransformerImpl transformer, String ns, String localName) |
| throws TransformerException |
| { |
| |
| if (null == transformer) |
| return; |
| |
| if (((null == ns) || (ns.length() == 0)) |
| && localName.equalsIgnoreCase("html")) |
| { |
| // System.out.println("transformer.getOutputPropertyNoDefault(OutputKeys.METHOD): "+ |
| // transformer.getOutputPropertyNoDefault(OutputKeys.METHOD)); |
| // Access at level of hashtable to see if the method has been set. |
| if (null != transformer.getOutputPropertyNoDefault(OutputKeys.METHOD)) |
| return; |
| |
| // Getting the output properties this way won't cause a clone of |
| // the properties. |
| Properties prevProperties = transformer.getOutputFormat().getProperties(); |
| |
| // We have to make sure we get an output properties with the proper |
| // defaults for the HTML method. The easiest way to do this is to |
| // have the OutputProperties class do it. |
| OutputProperties htmlOutputProperties = new OutputProperties(Method.HTML); |
| |
| htmlOutputProperties.copyFrom(prevProperties, true); |
| Properties htmlProperties = htmlOutputProperties.getProperties(); |
| |
| try |
| { |
| Serializer oldSerializer = transformer.getSerializer(); |
| |
| if (null != oldSerializer) |
| { |
| Serializer serializer = |
| SerializerFactory.getSerializer(htmlProperties); |
| |
| Writer writer = oldSerializer.getWriter(); |
| |
| if (null != writer) |
| serializer.setWriter(writer); |
| else |
| { |
| OutputStream os = oldSerializer.getOutputStream(); |
| |
| if (null != os) |
| serializer.setOutputStream(os); |
| } |
| |
| transformer.setSerializer(serializer); |
| |
| ContentHandler ch = serializer.asContentHandler(); |
| |
| transformer.setContentHandler(ch); |
| } |
| } |
| catch (java.io.IOException e) |
| { |
| throw new TransformerException(e); |
| } |
| } |
| } |
| |
| /** |
| * Get the value of a property, without using the default properties. This |
| * can be used to test if a property has been explicitly set by the stylesheet |
| * or user. |
| * |
| * @param name The property name, which is a fully-qualified URI. |
| * |
| * @return The value of the property, or null if not found. |
| * |
| * @throws IllegalArgumentException If the property is not supported, |
| * and is not namespaced. |
| */ |
| private static String getOutputPropertyNoDefault(String qnameString, Properties props) |
| throws IllegalArgumentException |
| { |
| String value = (String)props.get(qnameString); |
| |
| return value; |
| } |
| |
| /** |
| * Switch to HTML serializer if element is HTML |
| * |
| * |
| * @param ns Namespace URI of the element |
| * @param localName Local part of name of element |
| * |
| * @throws TransformerException |
| * @return new contentHandler. |
| */ |
| public static Serializer switchSerializerIfHTML( |
| String ns, String localName, Properties props, Serializer oldSerializer) |
| throws TransformerException |
| { |
| Serializer newSerializer = oldSerializer; |
| |
| if (((null == ns) || (ns.length() == 0)) |
| && localName.equalsIgnoreCase("html")) |
| { |
| // System.out.println("transformer.getOutputPropertyNoDefault(OutputKeys.METHOD): "+ |
| // transformer.getOutputPropertyNoDefault(OutputKeys.METHOD)); |
| // Access at level of hashtable to see if the method has been set. |
| if (null != getOutputPropertyNoDefault(OutputKeys.METHOD, props)) |
| return newSerializer; |
| |
| // Getting the output properties this way won't cause a clone of |
| // the properties. |
| Properties prevProperties = props; |
| |
| // We have to make sure we get an output properties with the proper |
| // defaults for the HTML method. The easiest way to do this is to |
| // have the OutputProperties class do it. |
| OutputProperties htmlOutputProperties = new OutputProperties(Method.HTML); |
| |
| htmlOutputProperties.copyFrom(prevProperties, true); |
| Properties htmlProperties = htmlOutputProperties.getProperties(); |
| |
| // try |
| { |
| if (null != oldSerializer) |
| { |
| Serializer serializer = |
| SerializerFactory.getSerializer(htmlProperties); |
| |
| Writer writer = oldSerializer.getWriter(); |
| |
| if (null != writer) |
| serializer.setWriter(writer); |
| else |
| { |
| OutputStream os = serializer.getOutputStream(); |
| |
| if (null != os) |
| serializer.setOutputStream(os); |
| } |
| newSerializer = serializer; |
| } |
| } |
| // catch (java.io.IOException e) |
| // { |
| // throw new TransformerException(e); |
| // } |
| } |
| return newSerializer; |
| } |
| |
| } |