Java example source code file (ToUnknownStream.java)
The ToUnknownStream.java Java example source code
/*
* reserved comment block
* DO NOT REMOVE OR ALTER!
*/
/*
* 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 1.3 2005/09/28 13:49:08 pvedula 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.
*
* This class is not a public API, it is public because it is used within Xalan.
* @xsl.usage internal
*/
public final 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 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 SerializationHandler#close()
*/
public void close()
{
m_handler.close();
}
/**
* @see Serializer#getOutputFormat()
* @return the properties of the underlying handler
*/
public Properties getOutputFormat()
{
return m_handler.getOutputFormat();
}
/**
* @see Serializer#getOutputStream()
* @return the OutputStream of the underlying XML or HTML handler
*/
public OutputStream getOutputStream()
{
return m_handler.getOutputStream();
}
/**
* @see 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 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 DOMSerializer#serialize(Node)
*
*/
public void serialize(Node node) throws IOException
{
if (m_firstTagNotEmitted)
{
flush();
}
m_handler.serialize(node);
}
/**
* @see 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 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 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 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
* @param XSLAttribute true if this attribute is coming from an xsl:attribute element
* @see ExtendedContentHandler#addAttribute(String, String, String, String, String)
*/
public void addAttribute(
String uri,
String localName,
String rawName,
String type,
String value)
throws SAXException
{
addAttribute(uri, localName, rawName, type, value, false);
}
/**
* 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
* @param XSLAttribute true if this attribute is coming from an xsl:attribute element
* @see ExtendedContentHandler#addAttribute(String, String, String, String, String)
*/
public void addAttribute(
String uri,
String localName,
String rawName,
String type,
String value,
boolean XSLAttribute)
throws SAXException
{
if (m_firstTagNotEmitted)
{
flush();
}
m_handler.addAttribute(uri, localName, rawName, type, value, XSLAttribute);
}
/**
* Adds an attribute to the currenly open tag
* @param rawName the attribute name, with prefix (if any)
* @param value the value of the parameter
* @see 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 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 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 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
{
if (m_needToCallSetDocumentInfo){
super.setDocumentInfo();
m_needToCallSetDocumentInfo = false;
}
/* 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 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 XSLOutputAttributes#getDoctypePublic()
*/
public String getDoctypePublic()
{
return m_handler.getDoctypePublic();
}
/**
* Pass the call on to the underlying handler
* @see XSLOutputAttributes#getDoctypeSystem()
*/
public String getDoctypeSystem()
{
return m_handler.getDoctypeSystem();
}
/**
* Pass the call on to the underlying handler
* @see XSLOutputAttributes#getEncoding()
*/
public String getEncoding()
{
return m_handler.getEncoding();
}
/**
* Pass the call on to the underlying handler
* @see XSLOutputAttributes#getIndent()
*/
public boolean getIndent()
{
return m_handler.getIndent();
}
/**
* Pass the call on to the underlying handler
* @see XSLOutputAttributes#getIndentAmount()
*/
public int getIndentAmount()
{
return m_handler.getIndentAmount();
}
/**
* Pass the call on to the underlying handler
* @see XSLOutputAttributes#getMediaType()
*/
public String getMediaType()
{
return m_handler.getMediaType();
}
/**
* Pass the call on to the underlying handler
* @see XSLOutputAttributes#getOmitXMLDeclaration()
*/
public boolean getOmitXMLDeclaration()
{
return m_handler.getOmitXMLDeclaration();
}
/**
* Pass the call on to the underlying handler
* @see XSLOutputAttributes#getStandalone()
*/
public String getStandalone()
{
return m_handler.getStandalone();
}
/**
* Pass the call on to the underlying handler
* @see XSLOutputAttributes#getVersion()
*/
public String getVersion()
{
return m_handler.getVersion();
}
/**
* @see 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 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 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 XSLOutputAttributes#setEncoding(String)
*/
public void setEncoding(String encoding)
{
m_handler.setEncoding(encoding);
}
/**
* Pass the call on to the underlying handler
* @see 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 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 XSLOutputAttributes#setOmitXMLDeclaration(boolean)
*/
public void setOmitXMLDeclaration(boolean b)
{
m_handler.setOmitXMLDeclaration(b);
}
/**
* Pass the call on to the underlying handler
* @see XSLOutputAttributes#setStandalone(String)
*/
public void setStandalone(String standalone)
{
m_handler.setStandalone(standalone);
}
/**
* @see 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)
{
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 =
(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
* 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 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 SerializationHandler#setCdataSectionElements(java.util.Vector)
*/
public void setCdataSectionElements(Vector 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);
}
}
}
Other Java examples (source code examples)Here is a short list of links related to this Java ToUnknownStream.java source code file: |
The search page
Other Java source code examples at this package level
Click here to learn more about this project
