/* |
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* Copyright (c) 2007, 2021, Oracle and/or its affiliates. All rights reserved. |
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*/ |
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/* |
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* Licensed to the Apache Software Foundation (ASF) under one or more |
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* contributor license agreements. See the NOTICE file distributed with |
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* this work for additional information regarding copyright ownership. |
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* The ASF licenses this file to You under the Apache License, Version 2.0 |
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* (the "License"); you may not use this file except in compliance with |
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* the License. You may obtain a copy of the License at |
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* |
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* http://www.apache.org/licenses/LICENSE-2.0 |
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* |
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* Unless required by applicable law or agreed to in writing, software |
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* distributed under the License is distributed on an "AS IS" BASIS, |
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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* See the License for the specific language governing permissions and |
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* limitations under the License. |
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*/ |
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package com.sun.org.apache.xml.internal.serializer; |
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import java.io.IOException; |
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import java.io.OutputStream; |
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import java.io.Writer; |
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import java.util.ArrayList; |
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import java.util.List; |
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import java.util.Properties; |
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import javax.xml.transform.ErrorListener; |
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import javax.xml.transform.SourceLocator; |
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import javax.xml.transform.Transformer; |
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import org.w3c.dom.Node; |
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import org.xml.sax.Attributes; |
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import org.xml.sax.ContentHandler; |
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import org.xml.sax.Locator; |
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import org.xml.sax.SAXException; |
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/** |
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*This class wraps another SerializationHandler. The wrapped object will either |
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* handler XML or HTML, which is not known until a little later when the first XML |
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* tag is seen. If the first tag is <html> then the wrapped object is an HTML |
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* handler, otherwise it is an XML handler. |
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* |
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* This class effectively caches the first few calls to it then passes them |
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* on to the wrapped handler (once it exists). After that subsequent calls a |
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* simply passed directly to the wrapped handler. |
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* |
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* The user of this class doesn't know if the output is ultimatley XML or HTML. |
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* |
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* This class is not a public API, it is public because it is used within Xalan. |
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* @xsl.usage internal |
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* @LastModified: Feb 2021 |
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*/ |
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public final class ToUnknownStream extends SerializerBase |
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{ |
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/** |
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* The wrapped handler, initially XML but possibly switched to HTML |
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*/ |
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private SerializationHandler m_handler; |
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/** |
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* A String with no characters |
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*/ |
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private static final String EMPTYSTRING = ""; |
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/** |
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* true if the underlying handler (XML or HTML) is fully initialized |
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*/ |
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private boolean m_wrapped_handler_not_initialized = false; |
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/** |
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* the prefix of the very first tag in the document |
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*/ |
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private String m_firstElementPrefix; |
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/** |
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* the element name (including any prefix) of the very first tag in the document |
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*/ |
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private String m_firstElementName; |
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/** |
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* the namespace URI associated with the first element |
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*/ |
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private String m_firstElementURI; |
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/** |
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* the local name (no prefix) associated with the first element |
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*/ |
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private String m_firstElementLocalName = null; |
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/** |
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* true if the first tag has been emitted to the wrapped handler |
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*/ |
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private boolean m_firstTagNotEmitted = true; |
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/** |
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* A collection of namespace URI's (only for first element). |
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* _namespacePrefix has the matching prefix for these URI's |
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*/ |
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private List<String> m_namespaceURI = null; |
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/** |
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* A collection of namespace Prefix (only for first element) |
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* _namespaceURI has the matching URIs for these prefix' |
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*/ |
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private List<String> m_namespacePrefix = null; |
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/** |
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* true if startDocument() was called before the underlying handler |
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* was initialized |
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*/ |
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private boolean m_needToCallStartDocument = false; |
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/** |
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* Default constructor. |
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* Initially this object wraps an XML Stream object, so _handler is never null. |
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* That may change later to an HTML Stream object. |
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*/ |
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public ToUnknownStream() { |
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this(null); |
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} |
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public ToUnknownStream(ErrorListener l) { |
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m_handler = new ToXMLStream(l); |
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} |
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/** |
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* @see Serializer#asContentHandler() |
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* @return the wrapped XML or HTML handler |
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*/ |
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public ContentHandler asContentHandler() throws IOException { |
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/* don't return the real handler ( m_handler ) because |
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* that would expose the real handler to the outside. |
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* Keep m_handler private so it can be internally swapped |
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* to an HTML handler. |
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*/ |
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return this; |
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} |
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/** |
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* @see SerializationHandler#close() |
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*/ |
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public void close() { |
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m_handler.close(); |
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} |
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/** |
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* @see Serializer#getOutputFormat() |
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* @return the properties of the underlying handler |
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*/ |
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public Properties getOutputFormat() { |
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return m_handler.getOutputFormat(); |
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} |
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/** |
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* @see Serializer#getOutputStream() |
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* @return the OutputStream of the underlying XML or HTML handler |
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*/ |
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public OutputStream getOutputStream() { |
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return m_handler.getOutputStream(); |
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} |
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/** |
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* @see Serializer#getWriter() |
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* @return the Writer of the underlying XML or HTML handler |
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*/ |
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public Writer getWriter() { |
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return m_handler.getWriter(); |
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} |
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/** |
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* passes the call on to the underlying HTML or XML handler |
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* @see Serializer#reset() |
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* @return ??? |
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*/ |
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public boolean reset() { |
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return m_handler.reset(); |
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} |
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/** |
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* Converts the DOM node to output |
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* @param node the DOM node to transform to output |
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* @see DOMSerializer#serialize(Node) |
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* |
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*/ |
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public void serialize(Node node) throws IOException { |
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if (m_firstTagNotEmitted) { |
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flush(); |
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} |
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m_handler.serialize(node); |
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} |
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/** |
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* @see SerializationHandler#setEscaping(boolean) |
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*/ |
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public boolean setEscaping(boolean escape) throws SAXException { |
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return m_handler.setEscaping(escape); |
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} |
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/** |
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* Set the properties of the handler |
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* @param format the output properties to set |
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* @see Serializer#setOutputFormat(Properties) |
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*/ |
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public void setOutputFormat(Properties format) { |
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m_handler.setOutputFormat(format); |
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} |
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/** |
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* Sets the output stream to write to |
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* @param output the OutputStream to write to |
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* @see Serializer#setOutputStream(OutputStream) |
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*/ |
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public void setOutputStream(OutputStream output) { |
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m_handler.setOutputStream(output); |
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} |
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/** |
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* Sets the writer to write to |
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* @param writer the writer to write to |
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* @see Serializer#setWriter(Writer) |
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*/ |
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public void setWriter(Writer writer) { |
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m_handler.setWriter(writer); |
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} |
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/** |
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* Adds an attribute to the currenly open tag |
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* @param uri the URI of a namespace |
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* @param localName the attribute name, without prefix |
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* @param rawName the attribute name, with prefix (if any) |
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* @param type the type of the attribute, typically "CDATA" |
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* @param value the value of the parameter |
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* @param XSLAttribute true if this attribute is coming from an xsl:attribute element |
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* @see ExtendedContentHandler#addAttribute(String, String, String, String, String) |
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*/ |
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public void addAttribute(String uri, String localName, String rawName, |
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String type, String value) |
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throws SAXException |
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{ |
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addAttribute(uri, localName, rawName, type, value, false); |
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} |
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/** |
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* Adds an attribute to the currenly open tag |
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* @param uri the URI of a namespace |
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* @param localName the attribute name, without prefix |
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* @param rawName the attribute name, with prefix (if any) |
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* @param type the type of the attribute, typically "CDATA" |
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* @param value the value of the parameter |
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* @param XSLAttribute true if this attribute is coming from an xsl:attribute element |
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* @see ExtendedContentHandler#addAttribute(String, String, String, String, String) |
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*/ |
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public void addAttribute(String uri, String localName, String rawName, |
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String type, String value, boolean XSLAttribute) |
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throws SAXException |
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{ |
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if (m_firstTagNotEmitted) { |
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flush(); |
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} |
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m_handler.addAttribute(uri, localName, rawName, type, value, XSLAttribute); |
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} |
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/** |
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* Adds an attribute to the currenly open tag |
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* @param rawName the attribute name, with prefix (if any) |
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* @param value the value of the parameter |
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* @see ExtendedContentHandler#addAttribute(String, String) |
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*/ |
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public void addAttribute(String rawName, String value) { |
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if (m_firstTagNotEmitted) { |
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flush(); |
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} |
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m_handler.addAttribute(rawName, value); |
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} |
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/** |
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* Adds a unique attribute to the currenly open tag |
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*/ |
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public void addUniqueAttribute(String rawName, String value, int flags) |
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throws SAXException |
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{ |
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if (m_firstTagNotEmitted) { |
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flush(); |
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} |
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m_handler.addUniqueAttribute(rawName, value, flags); |
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} |
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/** |
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* Converts the String to a character array and calls the SAX method |
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* characters(char[],int,int); |
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* |
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* @param chars The string of characters to process. |
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* |
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* @throws org.xml.sax.SAXException |
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* |
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* @see ExtendedContentHandler#characters(String) |
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*/ |
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public void characters(String chars) throws SAXException { |
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final int len = (chars == null) ? 0 : chars.length(); |
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if (len > m_charsBuff.length) { |
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m_charsBuff = new char[len * 2 + 1]; |
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} |
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if (len > 0) { |
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chars.getChars(0, len, m_charsBuff, 0); |
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} |
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this.characters(m_charsBuff, 0, len); |
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} |
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/** |
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* Pass the call on to the underlying handler |
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* @see ExtendedContentHandler#endElement(String) |
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*/ |
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public void endElement(String elementName) throws SAXException { |
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if (m_firstTagNotEmitted) { |
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flush(); |
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} |
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m_handler.endElement(elementName); |
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} |
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/** |
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* @see org.xml.sax.ContentHandler#startPrefixMapping(String, String) |
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* @param prefix The prefix that maps to the URI |
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* @param uri The URI for the namespace |
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*/ |
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public void startPrefixMapping(String prefix, String uri) throws SAXException { |
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this.startPrefixMapping(prefix,uri, true); |
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} |
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/** |
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* This method is used when a prefix/uri namespace mapping |
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* is indicated after the element was started with a |
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* startElement() and before and endElement(). |
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* startPrefixMapping(prefix,uri) would be used before the |
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* startElement() call. |
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* @param uri the URI of the namespace |
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* @param prefix the prefix associated with the given URI. |
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* |
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* @see ExtendedContentHandler#namespaceAfterStartElement(String, String) |
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*/ |
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public void namespaceAfterStartElement(String prefix, String uri) |
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throws SAXException |
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{ |
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// hack for XSLTC with finding URI for default namespace |
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if (m_firstTagNotEmitted && |
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m_firstElementURI == null && |
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m_firstElementName != null) |
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{ |
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String prefix1 = getPrefixPart(m_firstElementName); |
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if (prefix1 == null && EMPTYSTRING.equals(prefix)) { |
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// the elements URI is not known yet, and it |
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// doesn't have a prefix, and we are currently |
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// setting the uri for prefix "", so we have |
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// the uri for the element... lets remember it |
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m_firstElementURI = uri; |
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} |
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} |
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startPrefixMapping(prefix, uri, false); |
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} |
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public boolean startPrefixMapping(String prefix, String uri, boolean shouldFlush) |
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throws SAXException |
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{ |
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boolean pushed = false; |
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if (m_firstTagNotEmitted) { |
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if (m_firstElementName != null && shouldFlush) { |
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/* we've already seen a startElement, and this is a prefix mapping |
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* for the up coming element, so flush the old element |
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* then send this event on its way. |
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*/ |
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flush(); |
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pushed = m_handler.startPrefixMapping(prefix, uri, shouldFlush); |
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} else { |
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if (m_namespacePrefix == null) { |
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m_namespacePrefix = new ArrayList<>(); |
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m_namespaceURI = new ArrayList<>(); |
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} |
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m_namespacePrefix.add(prefix); |
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m_namespaceURI.add(uri); |
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if (m_firstElementURI == null) { |
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if (prefix.equals(m_firstElementPrefix)) |
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m_firstElementURI = uri; |
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} |
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} |
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} else { |
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pushed = m_handler.startPrefixMapping(prefix, uri, shouldFlush); |
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} |
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return pushed; |
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} |
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/** |
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* This method cannot be cached because default is different in |
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* HTML and XML (we need more than a boolean). |
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*/ |
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public void setVersion(String version) { |
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m_handler.setVersion(version); |
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} |
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/** |
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* @see org.xml.sax.ContentHandler#startDocument() |
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*/ |
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public void startDocument() throws SAXException { |
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m_needToCallStartDocument = true; |
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} |
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public void startElement(String qName) throws SAXException { |
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this.startElement(null, null, qName, null); |
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} |
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public void startElement(String namespaceURI, String localName, |
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String qName) throws SAXException { |
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this.startElement(namespaceURI, localName, qName, null); |
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} |
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public void startElement(String namespaceURI, String localName, |
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String elementName, Attributes atts) |
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throws SAXException |
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{ |
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if (m_needToCallSetDocumentInfo) { |
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super.setDocumentInfo(); |
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m_needToCallSetDocumentInfo = false; |
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} |
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/* we are notified of the start of an element */ |
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if (m_firstTagNotEmitted) { |
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/* we have not yet sent the first element on its way */ |
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if (m_firstElementName != null) { |
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/* this is not the first element, but a later one. |
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* But we have the old element pending, so flush it out, |
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* then send this one on its way. |
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*/ |
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flush(); |
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m_handler.startElement(namespaceURI, localName, elementName, atts); |
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} |
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else |
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{ |
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/* this is the very first element that we have seen, |
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* so save it for flushing later. We may yet get to know its |
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* URI due to added attributes. |
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*/ |
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m_wrapped_handler_not_initialized = true; |
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m_firstElementName = elementName; |
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// null if not known |
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m_firstElementPrefix = getPrefixPartUnknown(elementName); |
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// null if not known |
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m_firstElementURI = namespaceURI; |
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// null if not known |
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m_firstElementLocalName = localName; |
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if (m_tracer != null) |
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firePseudoElement(elementName); |
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/* we don't want to call our own addAttributes, which |
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* merely delegates to the wrapped handler, but we want to |
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* add these attributes to m_attributes. So me must call super. |
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* addAttributes() In this case m_attributes is only used for the |
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* first element, after that this class totally delegates to the |
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* wrapped handler which is either XML or HTML. |
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*/ |
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if (atts != null) |
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super.addAttributes(atts); |
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// if there are attributes, then lets make the flush() |
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// call the startElement on the handler and send the |
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// attributes on their way. |
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if (atts != null) |
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flush(); |
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} |
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} |
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else |
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{ |
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// this is not the first element, but a later one, so just |
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// send it on its way. |
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m_handler.startElement(namespaceURI, localName, elementName, atts); |
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} |
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} |
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/** |
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* Pass the call on to the underlying handler |
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* @see ExtendedLexicalHandler#comment(String) |
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*/ |
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public void comment(String comment) throws SAXException |
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{ |
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if (m_firstTagNotEmitted && m_firstElementName != null) |
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{ |
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emitFirstTag(); |
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} |
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else if (m_needToCallStartDocument) |
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{ |
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m_handler.startDocument(); |
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m_needToCallStartDocument = false; |
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} |
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m_handler.comment(comment); |
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} |
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/** |
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* Pass the call on to the underlying handler |
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* @see XSLOutputAttributes#getDoctypePublic() |
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*/ |
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public String getDoctypePublic() |
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{ |
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return m_handler.getDoctypePublic(); |
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} |
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/** |
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* Pass the call on to the underlying handler |
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* @see XSLOutputAttributes#getDoctypeSystem() |
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*/ |
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public String getDoctypeSystem() |
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{ |
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return m_handler.getDoctypeSystem(); |
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} |
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/** |
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* Pass the call on to the underlying handler |
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* @see XSLOutputAttributes#getEncoding() |
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*/ |
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public String getEncoding() |
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{ |
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return m_handler.getEncoding(); |
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} |
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/** |
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* Pass the call on to the underlying handler |
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* @see XSLOutputAttributes#getIndent() |
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*/ |
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public boolean getIndent() |
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{ |
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return m_handler.getIndent(); |
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} |
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/** |
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* Pass the call on to the underlying handler |
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* @see XSLOutputAttributes#getIndentAmount() |
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*/ |
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public int getIndentAmount() |
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{ |
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return m_handler.getIndentAmount(); |
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} |
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/** |
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* Pass the call on to the underlying handler |
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* @see XSLOutputAttributes#getMediaType() |
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*/ |
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public String getMediaType() |
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{ |
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return m_handler.getMediaType(); |
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} |
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/** |
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* Pass the call on to the underlying handler |
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* @see XSLOutputAttributes#getOmitXMLDeclaration() |
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*/ |
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public boolean getOmitXMLDeclaration() |
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{ |
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return m_handler.getOmitXMLDeclaration(); |
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} |
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/** |
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* Pass the call on to the underlying handler |
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* @see XSLOutputAttributes#getStandalone() |
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*/ |
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public String getStandalone() |
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{ |
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return m_handler.getStandalone(); |
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} |
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/** |
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* Pass the call on to the underlying handler |
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* @see XSLOutputAttributes#getVersion() |
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*/ |
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public String getVersion() { |
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return m_handler.getVersion(); |
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} |
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/** |
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* @see XSLOutputAttributes#setDoctype(String, String) |
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*/ |
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public void setDoctype(String system, String pub) { |
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m_handler.setDoctypePublic(pub); |
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m_handler.setDoctypeSystem(system); |
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} |
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/** |
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* Set the doctype in the underlying XML handler. Remember that this method |
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* was called, just in case we need to transfer this doctype to an HTML handler |
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* @param doctype the public doctype to set |
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* @see XSLOutputAttributes#setDoctypePublic(String) |
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*/ |
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public void setDoctypePublic(String doctype) { |
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m_handler.setDoctypePublic(doctype); |
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} |
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/** |
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* Set the doctype in the underlying XML handler. Remember that this method |
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* was called, just in case we need to transfer this doctype to an HTML handler |
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* @param doctype the system doctype to set |
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* @see XSLOutputAttributes#setDoctypeSystem(String) |
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*/ |
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public void setDoctypeSystem(String doctype) { |
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m_handler.setDoctypeSystem(doctype); |
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} |
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/** |
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* Pass the call on to the underlying handler |
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* @see XSLOutputAttributes#setEncoding(String) |
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*/ |
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public void setEncoding(String encoding) { |
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m_handler.setEncoding(encoding); |
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} |
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/** |
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* Pass the call on to the underlying handler |
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* @see XSLOutputAttributes#setIndent(boolean) |
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*/ |
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public void setIndent(boolean indent) { |
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m_handler.setIndent(indent); |
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} |
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/** |
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* Pass the call on to the underlying handler |
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*/ |
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public void setIndentAmount(int value) { |
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m_handler.setIndentAmount(value); |
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} |
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/** |
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* @see XSLOutputAttributes#setMediaType(String) |
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*/ |
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public void setMediaType(String mediaType) { |
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m_handler.setMediaType(mediaType); |
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} |
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/** |
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* Pass the call on to the underlying handler |
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* @see XSLOutputAttributes#setOmitXMLDeclaration(boolean) |
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*/ |
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public void setOmitXMLDeclaration(boolean b) { |
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m_handler.setOmitXMLDeclaration(b); |
|
} |
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/** |
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* Pass the call on to the underlying handler |
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* @see XSLOutputAttributes#setStandalone(String) |
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*/ |
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public void setStandalone(String standalone) { |
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m_handler.setStandalone(standalone); |
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} |
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@Override |
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public void setIsStandalone(boolean isStandalone) { |
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super.setIsStandalone(isStandalone); |
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m_handler.setIsStandalone(isStandalone); |
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} |
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/** |
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* Pass the call on to the underlying handler |
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* @see org.xml.sax.ext.DeclHandler#attributeDecl(String, String, String, String, String) |
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*/ |
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public void attributeDecl(String arg0, String arg1, String arg2, |
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String arg3, String arg4) throws SAXException { |
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m_handler.attributeDecl(arg0, arg1, arg2, arg3, arg4); |
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} |
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/** |
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* Pass the call on to the underlying handler |
|
* @see org.xml.sax.ext.DeclHandler#elementDecl(String, String) |
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*/ |
|
public void elementDecl(String arg0, String arg1) throws SAXException |
|
{ |
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if (m_firstTagNotEmitted) { |
|
emitFirstTag(); |
|
} |
|
m_handler.elementDecl(arg0, arg1); |
|
} |
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/** |
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* Pass the call on to the underlying handler |
|
* @see org.xml.sax.ext.DeclHandler#externalEntityDecl(String, String, String) |
|
*/ |
|
public void externalEntityDecl( |
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String name, |
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String publicId, |
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String systemId) |
|
throws SAXException |
|
{ |
|
if (m_firstTagNotEmitted) { |
|
flush(); |
|
} |
|
m_handler.externalEntityDecl(name, publicId, systemId); |
|
} |
|
/** |
|
* Pass the call on to the underlying handler |
|
* @see org.xml.sax.ext.DeclHandler#internalEntityDecl(String, String) |
|
*/ |
|
public void internalEntityDecl(String arg0, String arg1) |
|
throws SAXException |
|
{ |
|
if (m_firstTagNotEmitted) { |
|
flush(); |
|
} |
|
m_handler.internalEntityDecl(arg0, arg1); |
|
} |
|
/** |
|
* Pass the call on to the underlying handler |
|
* @see org.xml.sax.ContentHandler#characters(char[], int, int) |
|
*/ |
|
public void characters(char[] characters, int offset, int length) |
|
throws SAXException |
|
{ |
|
if (m_firstTagNotEmitted) { |
|
flush(); |
|
} |
|
m_handler.characters(characters, offset, length); |
|
} |
|
/** |
|
* Pass the call on to the underlying handler |
|
* @see org.xml.sax.ContentHandler#endDocument() |
|
*/ |
|
public void endDocument() throws SAXException { |
|
if (m_firstTagNotEmitted) { |
|
flush(); |
|
} |
|
m_handler.endDocument(); |
|
} |
|
/** |
|
* Pass the call on to the underlying handler |
|
* @see org.xml.sax.ContentHandler#endElement(String, String, String) |
|
*/ |
|
public void endElement(String namespaceURI, String localName, String qName) |
|
throws SAXException |
|
{ |
|
if (m_firstTagNotEmitted) { |
|
flush(); |
|
if (namespaceURI == null && m_firstElementURI != null) |
|
namespaceURI = m_firstElementURI; |
|
if (localName == null && m_firstElementLocalName != null) |
|
localName = m_firstElementLocalName; |
|
} |
|
m_handler.endElement(namespaceURI, localName, qName); |
|
} |
|
/** |
|
* Pass the call on to the underlying handler |
|
* @see org.xml.sax.ContentHandler#endPrefixMapping(String) |
|
*/ |
|
public void endPrefixMapping(String prefix) throws SAXException { |
|
m_handler.endPrefixMapping(prefix); |
|
} |
|
/** |
|
* Pass the call on to the underlying handler |
|
* @see org.xml.sax.ContentHandler#ignorableWhitespace(char[], int, int) |
|
*/ |
|
public void ignorableWhitespace(char[] ch, int start, int length) |
|
throws SAXException |
|
{ |
|
if (m_firstTagNotEmitted) |
|
{ |
|
flush(); |
|
} |
|
m_handler.ignorableWhitespace(ch, start, length); |
|
} |
|
/** |
|
* Pass the call on to the underlying handler |
|
* @see org.xml.sax.ContentHandler#processingInstruction(String, String) |
|
*/ |
|
public void processingInstruction(String target, String data) |
|
throws SAXException |
|
{ |
|
if (m_firstTagNotEmitted) |
|
{ |
|
flush(); |
|
} |
|
m_handler.processingInstruction(target, data); |
|
} |
|
/** |
|
* Pass the call on to the underlying handler |
|
* @see org.xml.sax.ContentHandler#setDocumentLocator(Locator) |
|
*/ |
|
public void setDocumentLocator(Locator locator) |
|
{ |
|
super.setDocumentLocator(locator); |
|
m_handler.setDocumentLocator(locator); |
|
} |
|
/** |
|
* Pass the call on to the underlying handler |
|
* @see org.xml.sax.ContentHandler#skippedEntity(String) |
|
*/ |
|
public void skippedEntity(String name) throws SAXException |
|
{ |
|
m_handler.skippedEntity(name); |
|
} |
|
/** |
|
* Pass the call on to the underlying handler |
|
* @see org.xml.sax.ext.LexicalHandler#comment(char[], int, int) |
|
*/ |
|
public void comment(char[] ch, int start, int length) throws SAXException |
|
{ |
|
if (m_firstTagNotEmitted) |
|
{ |
|
flush(); |
|
} |
|
m_handler.comment(ch, start, length); |
|
} |
|
/** |
|
* Pass the call on to the underlying handler |
|
* @see org.xml.sax.ext.LexicalHandler#endCDATA() |
|
*/ |
|
public void endCDATA() throws SAXException |
|
{ |
|
m_handler.endCDATA(); |
|
} |
|
/** |
|
* Pass the call on to the underlying handler |
|
* @see org.xml.sax.ext.LexicalHandler#endDTD() |
|
*/ |
|
public void endDTD() throws SAXException |
|
{ |
|
m_handler.endDTD(); |
|
} |
|
/** |
|
* Pass the call on to the underlying handler |
|
* @see org.xml.sax.ext.LexicalHandler#endEntity(String) |
|
*/ |
|
public void endEntity(String name) throws SAXException |
|
{ |
|
if (m_firstTagNotEmitted) |
|
{ |
|
emitFirstTag(); |
|
} |
|
m_handler.endEntity(name); |
|
} |
|
/** |
|
* Pass the call on to the underlying handler |
|
* @see org.xml.sax.ext.LexicalHandler#startCDATA() |
|
*/ |
|
public void startCDATA() throws SAXException |
|
{ |
|
m_handler.startCDATA(); |
|
} |
|
/** |
|
* Pass the call on to the underlying handler |
|
* @see org.xml.sax.ext.LexicalHandler#startDTD(String, String, String) |
|
*/ |
|
public void startDTD(String name, String publicId, String systemId) |
|
throws SAXException |
|
{ |
|
m_handler.startDTD(name, publicId, systemId); |
|
} |
|
/** |
|
* Pass the call on to the underlying handler |
|
* @see org.xml.sax.ext.LexicalHandler#startEntity(String) |
|
*/ |
|
public void startEntity(String name) throws SAXException |
|
{ |
|
m_handler.startEntity(name); |
|
} |
|
/** |
|
* Initialize the wrapped output stream (XML or HTML). |
|
* If the stream handler should be HTML, then replace the XML handler with |
|
* an HTML handler. After than send the starting method calls that were cached |
|
* to the wrapped handler. |
|
* |
|
*/ |
|
private void initStreamOutput() throws SAXException |
|
{ |
|
// Try to rule out if this is an not to be an HTML document based on prefix |
|
boolean firstElementIsHTML = isFirstElemHTML(); |
|
if (firstElementIsHTML) |
|
{ |
|
// create an HTML output handler, and initialize it |
|
// keep a reference to the old handler, ... it will soon be gone |
|
SerializationHandler oldHandler = m_handler; |
|
/* 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. |
|
*/ |
|
Properties htmlProperties = |
|
OutputPropertiesFactory.getDefaultMethodProperties(Method.HTML); |
|
Serializer serializer = |
|
SerializerFactory.getSerializer(htmlProperties); |
|
// The factory should be returning a ToStream |
|
// Don't know what to do if it doesn't |
|
// i.e. the user has over-ridden the content-handler property |
|
// for html |
|
m_handler = (SerializationHandler) serializer; |
|
//m_handler = new ToHTMLStream(); |
|
Writer writer = oldHandler.getWriter(); |
|
if (null != writer) |
|
m_handler.setWriter(writer); |
|
else |
|
{ |
|
OutputStream os = oldHandler.getOutputStream(); |
|
if (null != os) |
|
m_handler.setOutputStream(os); |
|
} |
|
// need to copy things from the old handler to the new one here |
|
// if (_setVersion_called) |
|
// { |
|
m_handler.setVersion(oldHandler.getVersion()); |
|
// } |
|
// if (_setDoctypeSystem_called) |
|
// { |
|
m_handler.setDoctypeSystem(oldHandler.getDoctypeSystem()); |
|
// } |
|
// if (_setDoctypePublic_called) |
|
// { |
|
m_handler.setDoctypePublic(oldHandler.getDoctypePublic()); |
|
// } |
|
// if (_setMediaType_called) |
|
// { |
|
m_handler.setMediaType(oldHandler.getMediaType()); |
|
// } |
|
m_handler.setTransformer(oldHandler.getTransformer()); |
|
} |
|
/* Now that we have a real wrapped handler (XML or HTML) lets |
|
* pass any cached calls to it |
|
*/ |
|
// Call startDocument() if necessary |
|
if (m_needToCallStartDocument) |
|
{ |
|
m_handler.startDocument(); |
|
m_needToCallStartDocument = false; |
|
} |
|
// the wrapped handler is now fully initialized |
|
m_wrapped_handler_not_initialized = false; |
|
} |
|
private void emitFirstTag() throws SAXException { |
|
if (m_firstElementName != null) { |
|
if (m_wrapped_handler_not_initialized) { |
|
initStreamOutput(); |
|
m_wrapped_handler_not_initialized = false; |
|
} |
|
// Output first tag |
|
m_handler.startElement(m_firstElementURI, null, m_firstElementName, m_attributes); |
|
// don't need the collected attributes of the first element anymore. |
|
m_attributes = null; |
|
// Output namespaces of first tag |
|
if (m_namespacePrefix != null) { |
|
final int n = m_namespacePrefix.size(); |
|
for (int i = 0; i < n; i++) { |
|
final String prefix = m_namespacePrefix.get(i); |
|
final String uri = m_namespaceURI.get(i); |
|
m_handler.startPrefixMapping(prefix, uri, false); |
|
} |
|
m_namespacePrefix = null; |
|
m_namespaceURI = null; |
|
} |
|
m_firstTagNotEmitted = false; |
|
} |
|
} |
|
/** |
|
* Utility function for calls to local-name(). |
|
* |
|
* Don't want to override static function on SerializerBase |
|
* So added Unknown suffix to method name. |
|
*/ |
|
private String getLocalNameUnknown(String value) { |
|
int idx = value.lastIndexOf(':'); |
|
if (idx >= 0) |
|
value = value.substring(idx + 1); |
|
idx = value.lastIndexOf('@'); |
|
if (idx >= 0) |
|
value = value.substring(idx + 1); |
|
return (value); |
|
} |
|
/** |
|
* Utility function to return prefix |
|
* |
|
* Don't want to override static function on SerializerBase |
|
* So added Unknown suffix to method name. |
|
*/ |
|
private String getPrefixPartUnknown(String qname) { |
|
final int index = qname.indexOf(':'); |
|
return (index > 0) ? qname.substring(0, index) : EMPTYSTRING; |
|
} |
|
/** |
|
* Determine if the firts element in the document is <html> or <HTML> |
|
* This uses the cached first element name, first element prefix and the |
|
* cached namespaces from previous method calls |
|
* |
|
* @return true if the first element is an opening <html> tag |
|
*/ |
|
private boolean isFirstElemHTML() { |
|
boolean isHTML; |
|
// is the first tag html, not considering the prefix ? |
|
isHTML = |
|
getLocalNameUnknown(m_firstElementName).equalsIgnoreCase("html"); |
|
// Try to rule out if this is not to be an HTML document based on URI |
|
if (isHTML && |
|
m_firstElementURI != null && |
|
!EMPTYSTRING.equals(m_firstElementURI)) |
|
{ |
|
// the <html> element has a non-trivial namespace |
|
isHTML = false; |
|
} |
|
// Try to rule out if this is an not to be an HTML document based on prefix |
|
if (isHTML && m_namespacePrefix != null) { |
|
/* the first element has a name of "html", but lets check the prefix. |
|
* If the prefix points to a namespace with a URL that is not "" |
|
* then the doecument doesn't start with an <html> tag, and isn't html |
|
*/ |
|
final int max = m_namespacePrefix.size(); |
|
for (int i = 0; i < max; i++) { |
|
final String prefix = m_namespacePrefix.get(i); |
|
final String uri = m_namespaceURI.get(i); |
|
if (m_firstElementPrefix != null && |
|
m_firstElementPrefix.equals(prefix) && |
|
!EMPTYSTRING.equals(uri)) |
|
{ |
|
// The first element has a prefix, so it can't be <html> |
|
isHTML = false; |
|
break; |
|
} |
|
} |
|
} |
|
return isHTML; |
|
} |
|
/** |
|
* @see Serializer#asDOMSerializer() |
|
*/ |
|
public DOMSerializer asDOMSerializer() throws IOException { |
|
return m_handler.asDOMSerializer(); |
|
} |
|
/** |
|
* @param URI_and_localNames a list of pairs of URI/localName |
|
* specified in the cdata-section-elements attribute. |
|
* @see SerializationHandler#setCdataSectionElements(List) |
|
*/ |
|
public void setCdataSectionElements(List<String> URI_and_localNames) { |
|
m_handler.setCdataSectionElements(URI_and_localNames); |
|
} |
|
/** |
|
* @see ExtendedContentHandler#addAttributes(org.xml.sax.Attributes) |
|
*/ |
|
public void addAttributes(Attributes atts) throws SAXException { |
|
m_handler.addAttributes(atts); |
|
} |
|
/** |
|
* Get the current namespace mappings. |
|
* Simply returns the mappings of the wrapped handler. |
|
* @see ExtendedContentHandler#getNamespaceMappings() |
|
*/ |
|
public NamespaceMappings getNamespaceMappings() { |
|
NamespaceMappings mappings = null; |
|
if (m_handler != null) { |
|
mappings = m_handler.getNamespaceMappings(); |
|
} |
|
return mappings; |
|
} |
|
/** |
|
* @see SerializationHandler#flushPending() |
|
*/ |
|
public void flushPending() throws SAXException { |
|
flush(); |
|
m_handler.flushPending(); |
|
} |
|
private void flush() { |
|
try { |
|
if (m_firstTagNotEmitted) { |
|
emitFirstTag(); |
|
} |
|
if (m_needToCallStartDocument) { |
|
m_handler.startDocument(); |
|
m_needToCallStartDocument = false; |
|
} |
|
} catch(SAXException e) { |
|
throw new RuntimeException(e.toString()); |
|
} |
|
} |
|
/** |
|
* @see ExtendedContentHandler#getPrefix |
|
*/ |
|
public String getPrefix(String namespaceURI) { |
|
return m_handler.getPrefix(namespaceURI); |
|
} |
|
/** |
|
* @see ExtendedContentHandler#entityReference(java.lang.String) |
|
*/ |
|
public void entityReference(String entityName) throws SAXException { |
|
m_handler.entityReference(entityName); |
|
} |
|
/** |
|
* @see ExtendedContentHandler#getNamespaceURI(java.lang.String, boolean) |
|
*/ |
|
public String getNamespaceURI(String qname, boolean isElement) { |
|
return m_handler.getNamespaceURI(qname, isElement); |
|
} |
|
public String getNamespaceURIFromPrefix(String prefix) { |
|
return m_handler.getNamespaceURIFromPrefix(prefix); |
|
} |
|
public void setTransformer(Transformer t) { |
|
m_handler.setTransformer(t); |
|
if ((t instanceof SerializerTrace) && |
|
(((SerializerTrace) t).hasTraceListeners())) |
|
{ |
|
m_tracer = (SerializerTrace) t; |
|
} else { |
|
m_tracer = null; |
|
} |
|
} |
|
public Transformer getTransformer() { |
|
return m_handler.getTransformer(); |
|
} |
|
/** |
|
* @see SerializationHandler#setContentHandler(org.xml.sax.ContentHandler) |
|
*/ |
|
public void setContentHandler(ContentHandler ch) { |
|
m_handler.setContentHandler(ch); |
|
} |
|
/** |
|
* This method is used to set the source locator, which might be used to |
|
* generated an error message. |
|
* @param locator the source locator |
|
* |
|
* @see ExtendedContentHandler#setSourceLocator(javax.xml.transform.SourceLocator) |
|
*/ |
|
public void setSourceLocator(SourceLocator locator) { |
|
m_handler.setSourceLocator(locator); |
|
} |
|
protected void firePseudoElement(String elementName) { |
|
if (m_tracer != null) { |
|
StringBuffer sb = new StringBuffer(); |
|
sb.append('<'); |
|
sb.append(elementName); |
|
// convert the StringBuffer to a char array and |
|
// emit the trace event that these characters "might" |
|
// be written |
|
char ch[] = sb.toString().toCharArray(); |
|
m_tracer.fireGenerateEvent( |
|
SerializerTrace.EVENTTYPE_OUTPUT_PSEUDO_CHARACTERS, |
|
ch, |
|
0, |
|
ch.length); |
|
} |
|
} |
|
/** |
|
* @see org.apache.xml.serializer.Serializer#asDOM3Serializer() |
|
*/ |
|
public Object asDOM3Serializer() throws IOException |
|
{ |
|
return m_handler.asDOM3Serializer(); |
|
} |
|
} |