- /*
- * Copyright 1999-2004 The Apache Software Foundation.
- *
- * Licensed 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
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
- /*
- * $Id: ToUnknownStream.java,v 1.8 2004/02/17 04:18:18 minchau Exp $
- */
- package com.sun.org.apache.xml.internal.serializer;
-
- import java.io.IOException;
- import java.io.OutputStream;
- import java.io.Writer;
- import java.util.Properties;
- import java.util.Vector;
-
- import javax.xml.transform.SourceLocator;
- import javax.xml.transform.Transformer;
-
- import org.w3c.dom.Node;
- import org.xml.sax.Attributes;
- import org.xml.sax.ContentHandler;
- import org.xml.sax.Locator;
- import org.xml.sax.SAXException;
-
-
- /**
- *This class wraps another SerializationHandler. The wrapped object will either
- * handler XML or HTML, which is not known until a little later when the first XML
- * tag is seen. If the first tag is <html> then the wrapped object is an HTML
- * handler, otherwise it is an XML handler.
- *
- * This class effectively caches the first few calls to it then passes them
- * on to the wrapped handler (once it exists). After that subsequent calls a
- * simply passed directly to the wrapped handler.
- *
- * The user of this class doesn't know if the output is ultimatley XML or HTML.
- */
- public class ToUnknownStream extends SerializerBase
- {
-
- /**
- * The wrapped handler, initially XML but possibly switched to HTML
- */
- private SerializationHandler m_handler;
-
- /**
- * A String with no characters
- */
- private static final String EMPTYSTRING = "";
-
- /**
- * true if the underlying handler (XML or HTML) is fully initialized
- */
- private boolean m_wrapped_handler_not_initialized = false;
-
-
- /**
- * the prefix of the very first tag in the document
- */
- private String m_firstElementPrefix;
- /**
- * the element name (including any prefix) of the very first tag in the document
- */
- private String m_firstElementName;
-
- /**
- * the namespace URI associated with the first element
- */
- private String m_firstElementURI;
-
- /**
- * the local name (no prefix) associated with the first element
- */
- private String m_firstElementLocalName = null;
-
- /**
- * true if the first tag has been emitted to the wrapped handler
- */
- private boolean m_firstTagNotEmitted = true;
-
- /**
- * A collection of namespace URI's (only for first element).
- * _namespacePrefix has the matching prefix for these URI's
- */
- private Vector m_namespaceURI = null;
- /**
- * A collection of namespace Prefix (only for first element)
- * _namespaceURI has the matching URIs for these prefix'
- */
- private Vector m_namespacePrefix = null;
-
- /**
- * true if startDocument() was called before the underlying handler
- * was initialized
- */
- private boolean m_needToCallStartDocument = false;
- /**
- * true if setVersion() was called before the underlying handler
- * was initialized
- */
- private boolean m_setVersion_called = false;
- /**
- * true if setDoctypeSystem() was called before the underlying handler
- * was initialized
- */
- private boolean m_setDoctypeSystem_called = false;
- /**
- * true if setDoctypePublic() was called before the underlying handler
- * was initialized
- */
- private boolean m_setDoctypePublic_called = false;
- /**
- * true if setMediaType() was called before the underlying handler
- * was initialized
- */
- private boolean m_setMediaType_called = false;
-
- /**
- * Default constructor.
- * Initially this object wraps an XML Stream object, so _handler is never null.
- * That may change later to an HTML Stream object.
- */
- public ToUnknownStream()
- {
- m_handler = new ToXMLStream();
- }
-
- /**
- * @see com.sun.org.apache.xml.internal.serializer.Serializer#asContentHandler()
- * @return the wrapped XML or HTML handler
- */
- public ContentHandler asContentHandler() throws IOException
- {
- /* don't return the real handler ( m_handler ) because
- * that would expose the real handler to the outside.
- * Keep m_handler private so it can be internally swapped
- * to an HTML handler.
- */
- return this;
- }
-
- /**
- * @see com.sun.org.apache.xml.internal.serializer.SerializationHandler#close()
- */
- public void close()
- {
- m_handler.close();
- }
-
- /**
- * @see com.sun.org.apache.xml.internal.serializer.Serializer#getOutputFormat()
- * @return the properties of the underlying handler
- */
- public Properties getOutputFormat()
- {
- return m_handler.getOutputFormat();
- }
-
- /**
- * @see com.sun.org.apache.xml.internal.serializer.Serializer#getOutputStream()
- * @return the OutputStream of the underlying XML or HTML handler
- */
- public OutputStream getOutputStream()
- {
- return m_handler.getOutputStream();
- }
-
- /**
- * @see com.sun.org.apache.xml.internal.serializer.Serializer#getWriter()
- * @return the Writer of the underlying XML or HTML handler
- */
- public Writer getWriter()
- {
- return m_handler.getWriter();
- }
-
- /**
- * passes the call on to the underlying HTML or XML handler
- * @see com.sun.org.apache.xml.internal.serializer.Serializer#reset()
- * @return ???
- */
- public boolean reset()
- {
- return m_handler.reset();
- }
-
- /**
- * Converts the DOM node to output
- * @param node the DOM node to transform to output
- * @see com.sun.org.apache.xml.internal.serializer.DOMSerializer#serialize(Node)
- *
- */
- public void serialize(Node node) throws IOException
- {
- if (m_firstTagNotEmitted)
- {
- flush();
- }
- m_handler.serialize(node);
- }
-
- /**
- * @see com.sun.org.apache.xml.internal.serializer.SerializationHandler#setEscaping(boolean)
- */
- public boolean setEscaping(boolean escape) throws SAXException
- {
- return m_handler.setEscaping(escape);
- }
-
- /**
- * Set the properties of the handler
- * @param format the output properties to set
- * @see com.sun.org.apache.xml.internal.serializer.Serializer#setOutputFormat(Properties)
- */
- public void setOutputFormat(Properties format)
- {
- m_handler.setOutputFormat(format);
- }
-
- /**
- * Sets the output stream to write to
- * @param output the OutputStream to write to
- * @see com.sun.org.apache.xml.internal.serializer.Serializer#setOutputStream(OutputStream)
- */
- public void setOutputStream(OutputStream output)
- {
- m_handler.setOutputStream(output);
- }
-
- /**
- * Sets the writer to write to
- * @param writer the writer to write to
- * @see com.sun.org.apache.xml.internal.serializer.Serializer#setWriter(Writer)
- */
- public void setWriter(Writer writer)
- {
- m_handler.setWriter(writer);
- }
-
- /**
- * Adds an attribute to the currenly open tag
- * @param uri the URI of a namespace
- * @param localName the attribute name, without prefix
- * @param rawName the attribute name, with prefix (if any)
- * @param type the type of the attribute, typically "CDATA"
- * @param value the value of the parameter
- * @see com.sun.org.apache.xml.internal.serializer.ExtendedContentHandler#addAttribute(String, String, String, String, String)
- */
- public void addAttribute(
- String uri,
- String localName,
- String rawName,
- String type,
- String value)
- throws SAXException
- {
- if (m_firstTagNotEmitted)
- {
- flush();
- }
- m_handler.addAttribute(uri, localName, rawName, type, value);
- }
- /**
- * Adds an attribute to the currenly open tag
- * @param name the attribute name, with prefix (if any)
- * @param value the value of the parameter
- * @see com.sun.org.apache.xml.internal.serializer.ExtendedContentHandler#addAttribute(String, String)
- */
- public void addAttribute(String rawName, String value)
- {
- if (m_firstTagNotEmitted)
- {
- flush();
- }
- m_handler.addAttribute(rawName, value);
-
- }
-
- /**
- * Adds a unique attribute to the currenly open tag
- */
- public void addUniqueAttribute(String rawName, String value, int flags)
- throws SAXException
- {
- if (m_firstTagNotEmitted)
- {
- flush();
- }
- m_handler.addUniqueAttribute(rawName, value, flags);
-
- }
-
- /**
- * Converts the String to a character array and calls the SAX method
- * characters(char[],int,int);
- *
- * @see com.sun.org.apache.xml.internal.serializer.ExtendedContentHandler#characters(String)
- */
- public void characters(String chars) throws SAXException
- {
- final int length = chars.length();
- if (length > m_charsBuff.length)
- {
- m_charsBuff = new char[length*2 + 1];
- }
- chars.getChars(0, length, m_charsBuff, 0);
- this.characters(m_charsBuff, 0, length);
- }
-
- /**
- * Pass the call on to the underlying handler
- * @see com.sun.org.apache.xml.internal.serializer.ExtendedContentHandler#endElement(String)
- */
- public void endElement(String elementName) throws SAXException
- {
- if (m_firstTagNotEmitted)
- {
- flush();
- }
- m_handler.endElement(elementName);
- }
-
-
- /**
- * @see org.xml.sax.ContentHandler#startPrefixMapping(String, String)
- * @param prefix The prefix that maps to the URI
- * @param uri The URI for the namespace
- */
- public void startPrefixMapping(String prefix, String uri) throws SAXException
- {
- this.startPrefixMapping(prefix,uri, true);
- }
-
- /**
- * This method is used when a prefix/uri namespace mapping
- * is indicated after the element was started with a
- * startElement() and before and endElement().
- * startPrefixMapping(prefix,uri) would be used before the
- * startElement() call.
- * @param uri the URI of the namespace
- * @param prefix the prefix associated with the given URI.
- *
- * @see com.sun.org.apache.xml.internal.serializer.ExtendedContentHandler#namespaceAfterStartElement(String, String)
- */
- public void namespaceAfterStartElement(String prefix, String uri)
- throws SAXException
- {
- // hack for XSLTC with finding URI for default namespace
- if (m_firstTagNotEmitted && m_firstElementURI == null && m_firstElementName != null)
- {
- String prefix1 = getPrefixPart(m_firstElementName);
- if (prefix1 == null && EMPTYSTRING.equals(prefix))
- {
- // the elements URI is not known yet, and it
- // doesn't have a prefix, and we are currently
- // setting the uri for prefix "", so we have
- // the uri for the element... lets remember it
- m_firstElementURI = uri;
- }
- }
- startPrefixMapping(prefix,uri, false);
- }
-
- public boolean startPrefixMapping(String prefix, String uri, boolean shouldFlush)
- throws SAXException
- {
- boolean pushed = false;
- if (m_firstTagNotEmitted)
- {
- if (m_firstElementName != null && shouldFlush)
- {
- /* we've already seen a startElement, and this is a prefix mapping
- * for the up coming element, so flush the old element
- * then send this event on its way.
- */
- flush();
- pushed = m_handler.startPrefixMapping(prefix, uri, shouldFlush);
- }
- else
- {
- if (m_namespacePrefix == null)
- {
- m_namespacePrefix = new Vector();
- m_namespaceURI = new Vector();
- }
- m_namespacePrefix.addElement(prefix);
- m_namespaceURI.addElement(uri);
-
- if (m_firstElementURI == null)
- {
- if (prefix.equals(m_firstElementPrefix))
- m_firstElementURI = uri;
- }
- }
-
- }
- else
- {
- pushed = m_handler.startPrefixMapping(prefix, uri, shouldFlush);
- }
- return pushed;
- }
-
- /**
- * This method cannot be cached because default is different in
- * HTML and XML (we need more than a boolean).
- */
-
- public void setVersion(String version)
- {
- m_handler.setVersion(version);
-
- // Cache call to setVersion()
- // super.setVersion(version);
- m_setVersion_called = true;
- }
-
- /**
- * @see org.xml.sax.ContentHandler#startDocument()
- */
- public void startDocument() throws SAXException
- {
- m_needToCallStartDocument = true;
- }
-
-
-
- public void startElement(String qName) throws SAXException
- {
- this.startElement(null, null, qName, null);
- }
-
- public void startElement(String namespaceURI, String localName, String qName) throws SAXException
- {
- this.startElement(namespaceURI, localName, qName, null);
- }
-
- public void startElement(
- String namespaceURI,
- String localName,
- String elementName,
- Attributes atts) throws SAXException
- {
- /* we are notified of the start of an element */
- if (m_firstTagNotEmitted)
- {
- /* we have not yet sent the first element on its way */
- if (m_firstElementName != null)
- {
- /* this is not the first element, but a later one.
- * But we have the old element pending, so flush it out,
- * then send this one on its way.
- */
- flush();
- m_handler.startElement(namespaceURI, localName, elementName, atts);
- }
- else
- {
- /* this is the very first element that we have seen,
- * so save it for flushing later. We may yet get to know its
- * URI due to added attributes.
- */
-
- m_wrapped_handler_not_initialized = true;
- m_firstElementName = elementName;
-
- // null if not known
- m_firstElementPrefix = getPrefixPartUnknown(elementName);
-
- // null if not known
- m_firstElementURI = namespaceURI;
-
- // null if not known
- m_firstElementLocalName = localName;
-
- if (m_tracer != null)
- firePseudoElement(elementName);
-
- /* we don't want to call our own addAttributes, which
- * merely delegates to the wrapped handler, but we want to
- * add these attributes to m_attributes. So me must call super.
- * addAttributes() In this case m_attributes is only used for the
- * first element, after that this class totally delegates to the
- * wrapped handler which is either XML or HTML.
- */
- if (atts != null)
- super.addAttributes(atts);
-
- // if there are attributes, then lets make the flush()
- // call the startElement on the handler and send the
- // attributes on their way.
- if (atts != null)
- flush();
-
- }
- }
- else
- {
- // this is not the first element, but a later one, so just
- // send it on its way.
- m_handler.startElement(namespaceURI, localName, elementName, atts);
- }
- }
-
- /**
- * Pass the call on to the underlying handler
- * @see com.sun.org.apache.xml.internal.serializer.ExtendedLexicalHandler#comment(String)
- */
- public void comment(String comment) throws SAXException
- {
- if (m_firstTagNotEmitted && m_firstElementName != null)
- {
- emitFirstTag();
- }
- else if (m_needToCallStartDocument)
- {
- m_handler.startDocument();
- m_needToCallStartDocument = false;
- }
-
- m_handler.comment(comment);
- }
-
- /**
- * Pass the call on to the underlying handler
- * @see com.sun.org.apache.xml.internal.serializer.XSLOutputAttributes#getDoctypePublic()
- */
- public String getDoctypePublic()
- {
-
- return m_handler.getDoctypePublic();
- }
-
- /**
- * Pass the call on to the underlying handler
- * @see com.sun.org.apache.xml.internal.serializer.XSLOutputAttributes#getDoctypeSystem()
- */
- public String getDoctypeSystem()
- {
- return m_handler.getDoctypeSystem();
- }
-
- /**
- * Pass the call on to the underlying handler
- * @see com.sun.org.apache.xml.internal.serializer.XSLOutputAttributes#getEncoding()
- */
- public String getEncoding()
- {
- return m_handler.getEncoding();
- }
-
- /**
- * Pass the call on to the underlying handler
- * @see com.sun.org.apache.xml.internal.serializer.XSLOutputAttributes#getIndent()
- */
- public boolean getIndent()
- {
- return m_handler.getIndent();
- }
-
- /**
- * Pass the call on to the underlying handler
- * @see com.sun.org.apache.xml.internal.serializer.XSLOutputAttributes#getIndentAmount()
- */
- public int getIndentAmount()
- {
- return m_handler.getIndentAmount();
- }
-
- /**
- * Pass the call on to the underlying handler
- * @see com.sun.org.apache.xml.internal.serializer.XSLOutputAttributes#getMediaType()
- */
- public String getMediaType()
- {
- return m_handler.getMediaType();
- }
-
- /**
- * Pass the call on to the underlying handler
- * @see com.sun.org.apache.xml.internal.serializer.XSLOutputAttributes#getOmitXMLDeclaration()
- */
- public boolean getOmitXMLDeclaration()
- {
- return m_handler.getOmitXMLDeclaration();
- }
-
- /**
- * Pass the call on to the underlying handler
- * @see com.sun.org.apache.xml.internal.serializer.XSLOutputAttributes#getStandalone()
- */
- public String getStandalone()
- {
- return m_handler.getStandalone();
- }
-
- /**
- * Pass the call on to the underlying handler
- * @see com.sun.org.apache.xml.internal.serializer.XSLOutputAttributes#getVersion()
- */
- public String getVersion()
- {
- return m_handler.getVersion();
- }
-
- /**
- * @see com.sun.org.apache.xml.internal.serializer.XSLOutputAttributes#setDoctype(String, String)
- */
- public void setDoctype(String system, String pub)
- {
- m_handler.setDoctypePublic(pub);
- m_handler.setDoctypeSystem(system);
- }
-
- /**
- * Set the doctype in the underlying XML handler. Remember that this method
- * was called, just in case we need to transfer this doctype to an HTML handler
- * @param doctype the public doctype to set
- * @see com.sun.org.apache.xml.internal.serializer.XSLOutputAttributes#setDoctypePublic(String)
- */
- public void setDoctypePublic(String doctype)
- {
- m_handler.setDoctypePublic(doctype);
- m_setDoctypePublic_called = true;
- }
-
- /**
- * Set the doctype in the underlying XML handler. Remember that this method
- * was called, just in case we need to transfer this doctype to an HTML handler
- * @param doctype the system doctype to set
- * @see com.sun.org.apache.xml.internal.serializer.XSLOutputAttributes#setDoctypeSystem(String)
- */
- public void setDoctypeSystem(String doctype)
- {
- m_handler.setDoctypeSystem(doctype);
- m_setDoctypeSystem_called = true;
- }
-
- /**
- * Pass the call on to the underlying handler
- * @see com.sun.org.apache.xml.internal.serializer.XSLOutputAttributes#setEncoding(String)
- */
- public void setEncoding(String encoding)
- {
- m_handler.setEncoding(encoding);
- }
-
- /**
- * Pass the call on to the underlying handler
- * @see com.sun.org.apache.xml.internal.serializer.XSLOutputAttributes#setIndent(boolean)
- */
- public void setIndent(boolean indent)
- {
- m_handler.setIndent(indent);
- }
-
- /**
- * Pass the call on to the underlying handler
- */
- public void setIndentAmount(int value)
- {
- m_handler.setIndentAmount(value);
- }
-
- /**
- * @see com.sun.org.apache.xml.internal.serializer.XSLOutputAttributes#setMediaType(String)
- */
- public void setMediaType(String mediaType)
- {
- m_handler.setMediaType(mediaType);
- m_setMediaType_called = true;
- }
-
- /**
- * Pass the call on to the underlying handler
- * @see com.sun.org.apache.xml.internal.serializer.XSLOutputAttributes#setOmitXMLDeclaration(boolean)
- */
- public void setOmitXMLDeclaration(boolean b)
- {
- m_handler.setOmitXMLDeclaration(b);
- }
-
- /**
- * Pass the call on to the underlying handler
- * @see com.sun.org.apache.xml.internal.serializer.XSLOutputAttributes#setStandalone(String)
- */
- public void setStandalone(String standalone)
- {
- m_handler.setStandalone(standalone);
- }
-
- /**
- * @see com.sun.org.apache.xml.internal.serializer.XSLOutputAttributes#setVersion(String)
- */
-
- /**
- * Pass the call on to the underlying handler
- * @see org.xml.sax.ext.DeclHandler#attributeDecl(String, String, String, String, String)
- */
- public void attributeDecl(
- String arg0,
- String arg1,
- String arg2,
- String arg3,
- String arg4)
- throws SAXException
- {
- m_handler.attributeDecl(arg0, arg1, arg2, arg3, arg4);
- }
-
- /**
- * Pass the call on to the underlying handler
- * @see org.xml.sax.ext.DeclHandler#elementDecl(String, String)
- */
- public void elementDecl(String arg0, String arg1) throws SAXException
- {
- if (m_firstTagNotEmitted)
- {
- emitFirstTag();
- }
- m_handler.elementDecl(arg0, arg1);
- }
-
- /**
- * Pass the call on to the underlying handler
- * @see org.xml.sax.ext.DeclHandler#externalEntityDecl(String, String, String)
- */
- public void externalEntityDecl(
- String name,
- String publicId,
- 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)
- {
- 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 =
- (String) m_namespacePrefix.elementAt(i);
- final String uri = (String) m_namespaceURI.elementAt(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 = (String) m_namespacePrefix.elementAt(i);
- final String uri = (String) m_namespaceURI.elementAt(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 com.sun.org.apache.xml.internal.serializer.Serializer#asDOMSerializer()
- */
- public DOMSerializer asDOMSerializer() throws IOException
- {
- return m_handler.asDOMSerializer();
- }
-
- /**
- * @param URI_and_localNames Vector a list of pairs of URI/localName
- * specified in the cdata-section-elements attribute
- * @see com.sun.org.apache.xml.internal.serializer.SerializationHandler#setCdataSectionElements(java.util.Vector)
- */
- public void setCdataSectionElements(Vector URI_and_localNames)
- {
- m_handler.setCdataSectionElements(URI_and_localNames);
- }
- /**
- * @see com.sun.org.apache.xml.internal.serializer.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 com.sun.org.apache.xml.internal.serializer.ExtendedContentHandler#getNamespaceMappings()
- */
- public NamespaceMappings getNamespaceMappings()
- {
- NamespaceMappings mappings = null;
- if (m_handler != null)
- {
- mappings = m_handler.getNamespaceMappings();
- }
- return mappings;
- }
- /**
- * @see com.sun.org.apache.xml.internal.serializer.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 com.sun.org.apache.xml.internal.serializer.ExtendedContentHandler#getPrefix
- */
- public String getPrefix(String namespaceURI)
- {
- return m_handler.getPrefix(namespaceURI);
- }
- /**
- * @see com.sun.org.apache.xml.internal.serializer.ExtendedContentHandler#entityReference(java.lang.String)
- */
- public void entityReference(String entityName) throws SAXException
- {
- m_handler.entityReference(entityName);
- }
-
- /**
- * @see com.sun.org.apache.xml.internal.serializer.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 com.sun.org.apache.xml.internal.serializer.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 com.sun.org.apache.xml.internal.serializer.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);
- }
- }
- }