com.sun.xml.wss.impl.c14n.SAXC14nCanonicalizerImpl Maven / Gradle / Ivy
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/*
* SAXC14nCanonicalzerImpl.java
*
* Created on August 20, 2005, 5:10 PM
*
* To change this template, choose Tools | Options and locate the template under
* the Source Creation and Management node. Right-click the template and choose
* Open. You can then make changes to the template in the Source Editor.
*/
package com.sun.xml.wss.impl.c14n;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Iterator;
import org.xml.sax.Attributes;
import org.xml.sax.ContentHandler;
import org.xml.sax.Locator;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.NamespaceSupport;
/**
*
* @author [email protected]
*/
public class SAXC14nCanonicalizerImpl extends BaseCanonicalizer implements ContentHandler {
NamespaceSupport nsContext = new NamespaceSupport ();
//boolean firstElement = true;
/** Creates a new instance of SAXC14nCanonicalzerImpl */
@SuppressWarnings("unchecked")
public SAXC14nCanonicalizerImpl () {
//_attrResult = new TreeSet (new AttrSorter (false));
_attrResult = new ArrayList();
for(int i=0;i<4;i++){
_attrs.add (new Attribute ());
}
}
public NamespaceSupport getNSContext (){
return nsContext;
}
/**
* Receive notification of a parser warning.
*
* The default implementation does nothing. Application writers
* may override this method in a subclass to take specific actions
* for each warning, such as inserting the message in a log file or
* printing it to the console.
*
* @param e The warning information encoded as an exception.
* @exception org.xml.sax.SAXException Any SAX exception, possibly
* wrapping another exception.
* @see org.xml.sax.ErrorHandler#warning
* @see org.xml.sax.SAXParseException
*/
public void warning (org.xml.sax.SAXParseException e) throws SAXException {
}
/**
* Receive notification of a recoverable parser error.
*
* The default implementation does nothing. Application writers
* may override this method in a subclass to take specific actions
* for each error, such as inserting the message in a log file or
* printing it to the console.
*
* @param e The warning information encoded as an exception.
* @exception org.xml.sax.SAXException Any SAX exception, possibly
* wrapping another exception.
* @see org.xml.sax.ErrorHandler#warning
* @see org.xml.sax.SAXParseException
*/
public void error (org.xml.sax.SAXParseException e) throws SAXException {
}
/**
* Report a fatal XML parsing error.
*
* The default implementation throws a SAXParseException.
* Application writers may override this method in a subclass if
* they need to take specific actions for each fatal error (such as
* collecting all of the errors into a single report): in any case,
* the application must stop all regular processing when this
* method is invoked, since the document is no longer reliable, and
* the parser may no longer report parsing events.
*
* @param e The error information encoded as an exception.
* @exception org.xml.sax.SAXException Any SAX exception, possibly
* wrapping another exception.
* @see org.xml.sax.ErrorHandler#fatalError
* @see org.xml.sax.SAXParseException
*/
public void fatalError (org.xml.sax.SAXParseException e) throws SAXException {
}
public void comment (char[] ch, int start, int length) throws SAXException {
}
/**
* Receive notification of character data inside an element.
*
* By default, do nothing. Application writers may override this
* method to take specific actions for each chunk of character data
* (such as adding the data to a node or buffer, or printing it to
* a file).
*
* @param ch The characters.
* @param start The start position in the character array.
* @param length The number of characters to use from the
* character array.
* @exception org.xml.sax.SAXException Any SAX exception, possibly
* wrapping another exception.
* @see org.xml.sax.ContentHandler#characters
*/
public void characters (char[] ch, int start, int length) throws SAXException {
try {
outputTextToWriter (ch,start,length,_stream);
} catch (IOException ex) {
throw new RuntimeException(ex);
}
}
/**
* Receive notification of ignorable whitespace in element content.
*
* By default, do nothing. Application writers may override this
* method to take specific actions for each chunk of ignorable
* whitespace (such as adding data to a node or buffer, or printing
* it to a file).
*
* @param ch The whitespace characters.
* @param start The start position in the character array.
* @param length The number of characters to use from the
* character array.
* @exception org.xml.sax.SAXException Any SAX exception, possibly
* wrapping another exception.
* @see org.xml.sax.ContentHandler#ignorableWhitespace
*/
public void ignorableWhitespace (char[] ch, int start, int length) throws SAXException {
}
public void endEntity (String name) throws SAXException {
}
public void startEntity (String name) throws SAXException {
}
/**
* Receive notification of the end of a Namespace mapping.
*
* By default, do nothing. Application writers may override this
* method in a subclass to take specific actions at the end of
* each prefix mapping.
*
* @param prefix The Namespace prefix being declared.
* @exception org.xml.sax.SAXException Any SAX exception, possibly
* wrapping another exception.
* @see org.xml.sax.ContentHandler#endPrefixMapping
*/
public void endPrefixMapping (String prefix) throws SAXException {
}
/**
* Receive a Locator object for document events.
*
* By default, do nothing. Application writers may override this
* method in a subclass if they wish to store the locator for use
* with other document events.
*
* @param locator A locator for all SAX document events.
* @see org.xml.sax.ContentHandler#setDocumentLocator
* @see org.xml.sax.Locator
*/
public void setDocumentLocator (Locator locator) {
}
/**
* Receive notification of a skipped entity.
*
* By default, do nothing. Application writers may override this
* method in a subclass to take specific actions for each
* processing instruction, such as setting status variables or
* invoking other methods.
*
* @param name The name of the skipped entity.
* @exception org.xml.sax.SAXException Any SAX exception, possibly
* wrapping another exception.
* @see org.xml.sax.ContentHandler#processingInstruction
*/
public void skippedEntity (String name) throws SAXException {
}
/**
* Receive notification of an unparsed entity declaration.
*
* By default, do nothing. Application writers may override this
* method in a subclass to keep track of the unparsed entities
* declared in a document.
*
* @param name The entity name.
* @param publicId The entity public identifier, or null if not
* available.
* @param systemId The entity system identifier.
* @param notationName The name of the associated notation.
* @exception org.xml.sax.SAXException Any SAX exception, possibly
* wrapping another exception.
* @see org.xml.sax.DTDHandler#unparsedEntityDecl
*/
public void unparsedEntityDecl (String name, String publicId, String systemId, String notationName) throws SAXException {
}
/**
* Receive notification of the start of a Namespace mapping.
*
* By default, do nothing. Application writers may override this
* method in a subclass to take specific actions at the start of
* each Namespace prefix scope (such as storing the prefix mapping).
*
* @param prefix The Namespace prefix being declared.
* @param uri The Namespace URI mapped to the prefix.
* @exception org.xml.sax.SAXException Any SAX exception, possibly
* wrapping another exception.
* @see org.xml.sax.ContentHandler#startPrefixMapping
*/
@SuppressWarnings("unchecked")
public void startPrefixMapping (String prefix, String uri) throws SAXException {
String dURI = nsContext.getURI (prefix);
boolean add = false;
if(dURI == null || !uri.equals (dURI)){
add = true;
}
if(add && !_ncContextState[_depth]){
nsContext.pushContext ();
_ncContextState[_depth]=true;
}
if(add){
if(prefix.length () == 0){
_defURI = uri;
}else{
nsContext.declarePrefix (prefix,uri);
AttributeNS attrNS = getAttributeNS ();
attrNS.setPrefix (prefix);
attrNS.setUri (uri);
_nsResult.add (attrNS);
}
}
}
public void reset (){
super.reset ();
nsContext.reset ();
}
/**
* Receive notification of the start of an element.
*
* By default, do nothing. Application writers may override this
* method in a subclass to take specific actions at the start of
* each element (such as allocating a new tree node or writing
* output to a file).
*
* @param uri The Namespace URI, or the empty string if the
* element has no Namespace URI or if Namespace
* processing is not being performed.
* @param localName The local name (without prefix), or the
* empty string if Namespace processing is not being
* performed.
* @param qName The qualified name (with prefix), or the
* empty string if qualified names are not available.
* @param attributes The attributes attached to the element. If
* there are no attributes, it shall be an empty
* Attributes object.
* @exception org.xml.sax.SAXException Any SAX exception, possibly
* wrapping another exception.
* @see org.xml.sax.ContentHandler#startElement
*/
public void startElement (String uri, String localName, String qName, Attributes attributes) throws SAXException {
try {
_depth ++;
resize();
_ncContextState[_depth]=false;
_stream .write ('<');
if(qName.length () >0){
writeStringToUtf8 (qName,_stream);
}else {
writeStringToUtf8 (localName,_stream);
}
if(attributes.getLength () >0 || _nsResult.size () >0){
handleAttributes (attributes);
}
_stream.write ('>');
_attrNSPos =0;
_attrPos =0;
_defURI = null;
_nsResult.clear ();
_attrResult.clear ();
} catch (IOException ex) {
throw new RuntimeException(ex);
}
}
/**
* Receive notification of the beginning of the document.
*
* By default, do nothing. Application writers may override this
* method in a subclass to take specific actions at the beginning
* of a document (such as allocating the root node of a tree or
* creating an output file).
*
* @exception org.xml.sax.SAXException Any SAX exception, possibly
* wrapping another exception.
* @see org.xml.sax.ContentHandler#startDocument
*/
public void startDocument () throws SAXException {
//super.startDocument ();
}
public void startDTD (String name, String publicId, String systemId) throws SAXException {
// super.startDTD (name, publicId, systemId);
}
public void startCDATA () throws SAXException {
//super.startCDATA ();
}
/**
* Tells the parser to resolve the systemId against the baseURI
* and read the entity text from that resulting absolute URI.
* Note that because the older
* DefaultHandler#resolveEntity DefaultHandler.resolveEntity(),
* method is overridden to call this one, this method may sometimes
* be invoked with null name and baseURI, and
* with the systemId already absolutized.
*/
public org.xml.sax.InputSource resolveEntity (String name, String publicId, String baseURI, String systemId) throws SAXException, java.io.IOException {
throw new UnsupportedOperationException ("Not yet implemented");
}
/**
* Invokes
* EntityResolver2#resolveEntity EntityResolver2.resolveEntity()
* with null entity name and base URI.
* You only need to override that method to use this class.
*/
public org.xml.sax.InputSource resolveEntity (String publicId, String systemId) throws SAXException, java.io.IOException {
return null;
}
public void internalEntityDecl (String name, String value) throws SAXException {
throw new UnsupportedOperationException ("Not yet implemented");
}
/**
* Tells the parser that if no external subset has been declared
* in the document text, none should be used.
*/
public org.xml.sax.InputSource getExternalSubset (String name, String baseURI) throws SAXException, java.io.IOException {
throw new UnsupportedOperationException ("Not yet implemented");
}
public void externalEntityDecl (String name, String publicId, String systemId) throws SAXException {
}
public void endDTD () throws SAXException {
}
public void endCDATA () throws SAXException {
}
public void elementDecl (String name, String model) throws SAXException {
}
public void attributeDecl (String eName, String aName, String type, String mode, String value) throws SAXException {
}
/**
* Receive notification of the end of the document.
*
* By default, do nothing. Application writers may override this
* method in a subclass to take specific actions at the end
* of a document (such as finalising a tree or closing an output
* file).
*
* @exception org.xml.sax.SAXException Any SAX exception, possibly
* wrapping another exception.
* @see org.xml.sax.ContentHandler#endDocument
*/
public void endDocument () throws SAXException {
}
/**
* Receive notification of the end of an element.
*
* By default, do nothing. Application writers may override this
* method in a subclass to take specific actions at the end of
* each element (such as finalising a tree node or writing
* output to a file).
*
* @param uri The Namespace URI, or the empty string if the
* element has no Namespace URI or if Namespace
* processing is not being performed.
* @param localName The local name (without prefix), or the
* empty string if Namespace processing is not being
* performed.
* @param qName The qualified name (with prefix), or the
* empty string if qualified names are not available.
* @exception org.xml.sax.SAXException Any SAX exception, possibly
* wrapping another exception.
* @see org.xml.sax.ContentHandler#endElement
*/
public void endElement (String uri, String localName, String qName) throws SAXException {
_depth --;
if(_ncContextState[_depth]){
nsContext.popContext ();
_ncContextState[_depth]=false; }
try{
_stream.write (_END_TAG);
if(qName.length () >0){
writeStringToUtf8 (qName,_stream);
}else {
writeStringToUtf8 (localName,_stream);
}
_stream.write ('>');
}catch(IOException io){
throw new RuntimeException(io);
}
}
/**
* Receive notification of a notation declaration.
*
* By default, do nothing. Application writers may override this
* method in a subclass if they wish to keep track of the notations
* declared in a document.
*
* @param name The notation name.
* @param publicId The notation public identifier, or null if not
* available.
* @param systemId The notation system identifier.
* @exception org.xml.sax.SAXException Any SAX exception, possibly
* wrapping another exception.
* @see org.xml.sax.DTDHandler#notationDecl
*/
public void notationDecl (String name, String publicId, String systemId) throws SAXException {
}
/**
* Receive notification of a processing instruction.
*
* By default, do nothing. Application writers may override this
* method in a subclass to take specific actions for each
* processing instruction, such as setting status variables or
* invoking other methods.
*
* @param target The processing instruction target.
* @param data The processing instruction data, or null if
* none is supplied.
* @exception org.xml.sax.SAXException Any SAX exception, possibly
* wrapping another exception.
* @see org.xml.sax.ContentHandler#processingInstruction
*/
public void processingInstruction (String target, String data) throws SAXException {
}
//TODO:: Optimize
@SuppressWarnings("unchecked")
private void handleAttributes (Attributes attributes) {
int length = attributes.getLength ();
String localName = null;
boolean contextPushed= false;
try{
for(int i=0; i