- /*
- * 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;
- }
-
- }