net.sourceforge.htmlunit.xerces.parsers.AbstractXMLDocumentParser Maven / Gradle / Ivy
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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.
*/
package net.sourceforge.htmlunit.xerces.parsers;
import net.sourceforge.htmlunit.xerces.xni.Augmentations;
import net.sourceforge.htmlunit.xerces.xni.NamespaceContext;
import net.sourceforge.htmlunit.xerces.xni.QName;
import net.sourceforge.htmlunit.xerces.xni.XMLAttributes;
import net.sourceforge.htmlunit.xerces.xni.XMLDocumentHandler;
import net.sourceforge.htmlunit.xerces.xni.XMLLocator;
import net.sourceforge.htmlunit.xerces.xni.XMLResourceIdentifier;
import net.sourceforge.htmlunit.xerces.xni.XMLString;
import net.sourceforge.htmlunit.xerces.xni.XNIException;
import net.sourceforge.htmlunit.xerces.xni.parser.XMLDocumentSource;
import net.sourceforge.htmlunit.xerces.xni.parser.XMLParserConfiguration;
/**
* This is the base class for all XML document parsers. XMLDocumentParser
* provides a common implementation shared by the various document parsers
* in the Xerces package. While this class is provided for convenience, it
* does not prevent other kinds of parsers to be constructed using the XNI
* interfaces.
*
* @author Arnaud Le Hors, IBM
* @author Andy Clark, IBM
*/
public abstract class AbstractXMLDocumentParser
extends XMLParser
implements XMLDocumentHandler {
/** Document source*/
protected XMLDocumentSource fDocumentSource;
/**
* Constructs a document parser using the default symbol table
* and grammar pool.
* @param config the config
*/
protected AbstractXMLDocumentParser(XMLParserConfiguration config) {
super(config);
// set handlers
config.setDocumentHandler(this);
}
/**
* The start of the document.
*
* @param locator The system identifier of the entity if the entity
* is external, null otherwise.
* @param encoding The auto-detected IANA encoding name of the entity
* stream. This value will be null in those situations
* where the entity encoding is not auto-detected (e.g.
* internal entities or a document entity that is
* parsed from a java.io.Reader).
* @param namespaceContext
* The namespace context in effect at the
* start of this document.
* This object represents the current context.
* Implementors of this class are responsible
* for copying the namespace bindings from the
* the current context (and its parent contexts)
* if that information is important.
* @param augs Additional information that may include infoset augmentations
*
* @throws XNIException Thrown by handler to signal an error.
*/
@Override
public void startDocument(XMLLocator locator, String encoding,
NamespaceContext namespaceContext, Augmentations augs)
throws XNIException {
} // startDocument(XMLLocator,String)
/**
* Notifies of the presence of an XMLDecl line in the document. If
* present, this method will be called immediately following the
* startDocument call.
*
* @param version The XML version.
* @param encoding The IANA encoding name of the document, or null if
* not specified.
* @param standalone The standalone value, or null if not specified.
* @param augs Additional information that may include infoset augmentations
*
* @throws XNIException Thrown by handler to signal an error.
*/
@Override
public void xmlDecl(String version, String encoding, String standalone, Augmentations augs)
throws XNIException {
} // xmlDecl(String,String,String)
/**
* Notifies of the presence of the DOCTYPE line in the document.
*
* @param rootElement The name of the root element.
* @param publicId The public identifier if an external DTD or null
* if the external DTD is specified using SYSTEM.
* @param systemId The system identifier if an external DTD, null
* @param augs Additional information that may include infoset augmentations
* otherwise.
*
* @throws XNIException Thrown by handler to signal an error.
*/
@Override
public void doctypeDecl(String rootElement, String publicId, String systemId, Augmentations augs)
throws XNIException {
} // doctypeDecl(String,String,String)
/**
* The start of an element. If the document specifies the start element
* by using an empty tag, then the startElement method will immediately
* be followed by the endElement method, with no intervening methods.
*
* @param element The name of the element.
* @param attributes The element attributes.
* @param augs Additional information that may include infoset augmentations
*
* @throws XNIException Thrown by handler to signal an error.
*/
@Override
public void startElement(QName element, XMLAttributes attributes, Augmentations augs)
throws XNIException {
} // startElement(QName,XMLAttributes)
/**
* An empty element.
*
* @param element The name of the element.
* @param attributes The element attributes.
* @param augs Additional information that may include infoset augmentations
*
* @throws XNIException Thrown by handler to signal an error.
*/
@Override
public void emptyElement(QName element, XMLAttributes attributes, Augmentations augs)
throws XNIException {
startElement(element, attributes, augs);
endElement(element, augs);
} // emptyElement(QName,XMLAttributes)
/**
* Character content.
*
* @param text The content.
* @param augs Additional information that may include infoset augmentations
*
* @throws XNIException Thrown by handler to signal an error.
*/
@Override
public void characters(XMLString text, Augmentations augs) throws XNIException {
} // characters(XMLString)
/**
* Ignorable whitespace. For this method to be called, the document
* source must have some way of determining that the text containing
* only whitespace characters should be considered ignorable. For
* example, the validator can determine if a length of whitespace
* characters in the document are ignorable based on the element
* content model.
*
* @param text The ignorable whitespace.
* @param augs Additional information that may include infoset augmentations
*
* @throws XNIException Thrown by handler to signal an error.
*/
@Override
public void ignorableWhitespace(XMLString text, Augmentations augs) throws XNIException {
} // ignorableWhitespace(XMLString)
/**
* The end of an element.
*
* @param element The name of the element.
* @param augs Additional information that may include infoset augmentations
*
* @throws XNIException Thrown by handler to signal an error.
*/
@Override
public void endElement(QName element, Augmentations augs) throws XNIException {
} // endElement(QName)
/**
* The start of a CDATA section.
* @param augs Additional information that may include infoset augmentations
*
* @throws XNIException Thrown by handler to signal an error.
*/
@Override
public void startCDATA(Augmentations augs) throws XNIException {
} // startCDATA()
/**
* The end of a CDATA section.
* @param augs Additional information that may include infoset augmentations
*
* @throws XNIException Thrown by handler to signal an error.
*/
@Override
public void endCDATA(Augmentations augs) throws XNIException {
} // endCDATA()
/**
* The end of the document.
* @param augs Additional information that may include infoset augmentations
*
* @throws XNIException Thrown by handler to signal an error.
*/
@Override
public void endDocument(Augmentations augs) throws XNIException {
} // endDocument()
/**
* This method notifies the start of an entity.
*
* Note: This method is not called for entity references
* appearing as part of attribute values.
*
* @param name The name of the entity.
* @param identifier The resource identifier.
* @param encoding The auto-detected IANA encoding name of the entity
* stream. This value will be null in those situations
* where the entity encoding is not auto-detected (e.g.
* internal entities or a document entity that is
* parsed from a java.io.Reader).
* @param augs Additional information that may include infoset augmentations
*
* @exception XNIException Thrown by handler to signal an error.
*/
@Override
public void startGeneralEntity(String name,
XMLResourceIdentifier identifier,
String encoding,
Augmentations augs) throws XNIException {
} // startGeneralEntity(String,XMLResourceIdentifier,String,Augmentations)
/**
* Notifies of the presence of a TextDecl line in an entity. If present,
* this method will be called immediately following the startEntity call.
*
* Note: This method will never be called for the
* document entity; it is only called for external general entities
* referenced in document content.
*
* Note: This method is not called for entity references
* appearing as part of attribute values.
*
* @param version The XML version, or null if not specified.
* @param encoding The IANA encoding name of the entity.
* @param augs Additional information that may include infoset augmentations
*
* @exception XNIException
* Thrown by handler to signal an error.
*/
@Override
public void textDecl(String version, String encoding, Augmentations augs) throws XNIException {
} // textDecl(String, String, Augmentations)
/**
* This method notifies the end of an entity.
*
* Note: This method is not called for entity references
* appearing as part of attribute values.
*
* @param name The name of the entity.
* @param augs Additional information that may include infoset augmentations
*
* @exception XNIException
* Thrown by handler to signal an error.
*/
@Override
public void endGeneralEntity(String name, Augmentations augs)
throws XNIException {
} // endGeneralEntity(String,Augmentations)
/**
* A comment.
*
* @param text The text in the comment.
* @param augs Additional information that may include infoset augmentations
*
* @exception XNIException
* Thrown by application to signal an error.
*/
@Override
public void comment(XMLString text, Augmentations augs) throws XNIException {
} // comment (XMLString, Augmentations)
/**
* A processing instruction. Processing instructions consist of a
* target name and, optionally, text data. The data is only meaningful
* to the application.
*
* Typically, a processing instruction's data will contain a series
* of pseudo-attributes. These pseudo-attributes follow the form of
* element attributes but are not parsed or presented
* to the application as anything other than text. The application is
* responsible for parsing the data.
*
* @param target The target.
* @param data The data or null if none specified.
* @param augs Additional information that may include infoset augmentations
*
* @exception XNIException
* Thrown by handler to signal an error.
*/
@Override
public void processingInstruction(String target, XMLString data, Augmentations augs)
throws XNIException {
} // processingInstruction(String, XMLString, Augmentations)
/** Sets the document source */
@Override
public void setDocumentSource(XMLDocumentSource source){
fDocumentSource = source;
} // setDocumentSource
/** Returns the document source */
@Override
public XMLDocumentSource getDocumentSource (){
return fDocumentSource;
} // getDocumentSource
//
// Protected methods
//
/**
* reset all components before parsing
*/
@Override
protected void reset() throws XNIException {
super.reset();
} // reset()
} // class AbstractXMLDocumentParser