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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.xni.parser;
import java.io.IOException;
import net.sourceforge.htmlunit.xerces.xni.XMLDocumentHandler;
import net.sourceforge.htmlunit.xerces.xni.XNIException;
/**
* Represents a parser configuration. The parser configuration maintains
* a table of recognized features and properties, assembles components
* for the parsing pipeline, and is responsible for initiating parsing
* of an XML document.
*
* By separating the configuration of a parser from the specific parser
* instance, applications can create new configurations and re-use the
* existing parser components and external API generators (e.g. the
* DOMParser and SAXParser).
*
* The internals of any specific parser configuration instance are hidden.
* Therefore, each configuration may implement the parsing mechanism any
* way necessary. However, the parser configuration should follow these
* guidelines:
*
* -
* Call the
reset method on each component before parsing.
* This is only required if the configuration is re-using existing
* components that conform to the XMLComponent interface.
* If the configuration uses all custom parts, then it is free to
* implement everything as it sees fit as long as it follows the
* other guidelines.
*
* -
* Call the
setFeature and setProperty method
* on each component during parsing to propagate features and properties
* that have changed. This is only required if the configuration is
* re-using existing components that conform to the XMLComponent
* interface. If the configuration uses all custom parts, then it is free
* to implement everything as it sees fit as long as it follows the other
* guidelines.
*
* -
* Pass the same unique String references for all symbols that are
* propagated to the registered handlers. Symbols include, but may not
* be limited to, the names of elements and attributes (including their
* uri, prefix, and localpart). This is suggested but not an absolute
* must. However, the standard parser components may require access to
* the same symbol table for creation of unique symbol references to be
* propagated in the XNI pipeline.
*
*
*
* @author Arnaud Le Hors, IBM
* @author Andy Clark, IBM
*/
public interface XMLParserConfiguration extends XMLComponentManager {
/**
* Parse an XML document.
*
* The parser can use this method to instruct this configuration
* to begin parsing an XML document from any valid input source
* (a character stream, a byte stream, or a URI).
*
* Parsers may not invoke this method while a parse is in progress.
* Once a parse is complete, the parser may then parse another XML
* document.
*
* This method is synchronous: it will not return until parsing
* has ended. If a client application wants to terminate
* parsing early, it should throw an exception.
*
* When this method returns, all characters streams and byte streams
* opened by the parser are closed.
*
* @param inputSource The input source for the top-level of the
* XML document.
*
* @exception XNIException Any XNI exception, possibly wrapping
* another exception.
* @exception IOException An IO exception from the parser, possibly
* from a byte stream or character stream
* supplied by the parser.
*/
void parse(XMLInputSource inputSource) throws XNIException, IOException;
/**
* Allows a parser to add parser specific features to be recognized
* and managed by the parser configuration.
*
* @param featureIds An array of the additional feature identifiers
* to be recognized.
*/
void addRecognizedFeatures(String[] featureIds);
/**
* Sets the state of a feature. This method is called by the parser
* and gets propagated to components in this parser configuration.
*
* @param featureId The feature identifier.
* @param state The state of the feature.
*
* @throws XMLConfigurationException Thrown if there is a configuration
* error.
*/
void setFeature(String featureId, boolean state)
throws XMLConfigurationException;
/**
* @param featureId The feature identifier.
* @return the state of a feature.
*
* @throws XMLConfigurationException Thrown if there is a configuration
* error.
*/
@Override
boolean getFeature(String featureId)
throws XMLConfigurationException;
/**
* Allows a parser to add parser specific properties to be recognized
* and managed by the parser configuration.
*
* @param propertyIds An array of the additional property identifiers
* to be recognized.
*/
void addRecognizedProperties(String[] propertyIds);
/**
* Sets the value of a property. This method is called by the parser
* and gets propagated to components in this parser configuration.
*
* @param propertyId The property identifier.
* @param value The value of the property.
*
* @throws XMLConfigurationException Thrown if there is a configuration
* error.
*/
void setProperty(String propertyId, Object value)
throws XMLConfigurationException;
/**
* @param propertyId The property identifier.
* @return the value of a property.
*
* @throws XMLConfigurationException Thrown if there is a configuration
* error.
*/
@Override
Object getProperty(String propertyId)
throws XMLConfigurationException;
// handlers
/**
* Sets the error handler.
*
* @param errorHandler The error resolver.
*/
void setErrorHandler(XMLErrorHandler errorHandler);
/**
* @return the registered error handler.
*/
XMLErrorHandler getErrorHandler();
/**
* Sets the document handler to receive information about the document.
*
* @param documentHandler The document handler.
*/
void setDocumentHandler(XMLDocumentHandler documentHandler);
/**
* @return the registered document handler.
*/
XMLDocumentHandler getDocumentHandler();
/**
* Sets the input source for the document to parse.
*
* @param inputSource The document's input source.
*
* @exception XMLConfigurationException Thrown if there is a
* configuration error when initializing the
* parser.
* @exception IOException Thrown on I/O error.
*
* @see #parse(boolean)
*/
void setInputSource(XMLInputSource inputSource)
throws XMLConfigurationException, IOException;
/**
* Parses the document in a pull parsing fashion.
*
* @param complete True if the pull parser should parse the
* remaining document completely.
*
* @return True if there is more document to parse.
*
* @exception XNIException Any XNI exception, possibly wrapping
* another exception.
* @exception IOException An IO exception from the parser, possibly
* from a byte stream or character stream
* supplied by the parser.
*
* @see #setInputSource
*/
boolean parse(boolean complete) throws XNIException, IOException;
/**
* If the application decides to terminate parsing before the xml document
* is fully parsed, the application should call this method to free any
* resource allocated during parsing. For example, close all opened streams.
*/
void cleanup();
}