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Xerces2 is the next generation of high performance, fully compliant XML parsers in the Apache Xerces family.
This new version of Xerces introduces the Xerces Native Interface (XNI), a complete framework for building
parser components and configurations that is extremely modular and easy to program. The Apache Xerces2 parser is
the reference implementation of XNI but other parser components, configurations, and parsers can be written
using the Xerces Native Interface. For complete design and implementation documents, refer to the XNI Manual.
Xerces2 is a fully conforming XML Schema 1.0 processor. A partial experimental implementation of the XML Schema
1.1 Structures and Datatypes Working Drafts (December 2009) and an experimental implementation of the XML Schema
Definition Language (XSD): Component Designators (SCD) Candidate Recommendation (January 2010) are provided for
evaluation. For more information, refer to the XML Schema page. Xerces2 also provides a complete implementation
of the Document Object Model Level 3 Core and Load/Save W3C Recommendations and provides a complete
implementation of the XML Inclusions (XInclude) W3C Recommendation. It also provides support for OASIS XML
Catalogs v1.1. Xerces2 is able to parse documents written according to the XML 1.1 Recommendation, except that
it does not yet provide an option to enable normalization checking as described in section 2.13 of this
specification. It also handles namespaces according to the XML Namespaces 1.1 Recommendation, and will correctly
serialize XML 1.1 documents if the DOM level 3 load/save APIs are in use.
/*
* 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 org.apache.xerces.impl;
import java.io.CharConversionException;
import java.io.EOFException;
import java.io.IOException;
import org.apache.xerces.impl.io.MalformedByteSequenceException;
import org.apache.xerces.impl.msg.XMLMessageFormatter;
import org.apache.xerces.util.SymbolTable;
import org.apache.xerces.xni.XNIException;
import org.apache.xerces.xni.parser.XMLComponentManager;
import org.apache.xerces.xni.parser.XMLConfigurationException;
import org.apache.xerces.xni.parser.XMLInputSource;
/**
* This class scans the version of the document to determine
* which scanner to use: XML 1.1 or XML 1.0.
* The version is scanned using XML 1.1. scanner.
*
* @xerces.internal
*
* @author Neil Graham, IBM
* @author Elena Litani, IBM
* @version $Id: XMLVersionDetector.java 699892 2008-09-28 21:08:27Z mrglavas $
*/
public class XMLVersionDetector {
//
// Constants
//
private static final char[] XML11_VERSION = new char[]{'1', '.', '1'};
// property identifiers
/** Property identifier: symbol table. */
protected static final String SYMBOL_TABLE =
Constants.XERCES_PROPERTY_PREFIX + Constants.SYMBOL_TABLE_PROPERTY;
/** Property identifier: error reporter. */
protected static final String ERROR_REPORTER =
Constants.XERCES_PROPERTY_PREFIX + Constants.ERROR_REPORTER_PROPERTY;
/** Property identifier: entity manager. */
protected static final String ENTITY_MANAGER =
Constants.XERCES_PROPERTY_PREFIX + Constants.ENTITY_MANAGER_PROPERTY;
//
// Data
//
/** Symbol: "version". */
protected static final String fVersionSymbol = "version".intern();
// symbol: [xml]:
protected static final String fXMLSymbol = "[xml]".intern();
/** Symbol table. */
protected SymbolTable fSymbolTable;
/** Error reporter. */
protected XMLErrorReporter fErrorReporter;
/** Entity manager. */
protected XMLEntityManager fEntityManager;
protected String fEncoding = null;
private final char [] fExpectedVersionString = {'<', '?', 'x', 'm', 'l', ' ', 'v', 'e', 'r', 's',
'i', 'o', 'n', '=', ' ', ' ', ' ', ' ', ' '};
/**
*
*
* @param componentManager The component manager.
*
* @throws XNIException Throws exception if required features and
* properties cannot be found.
*/
public void reset(XMLComponentManager componentManager)
throws XMLConfigurationException {
// Xerces properties
fSymbolTable = (SymbolTable)componentManager.getProperty(SYMBOL_TABLE);
fErrorReporter = (XMLErrorReporter)componentManager.getProperty(ERROR_REPORTER);
fEntityManager = (XMLEntityManager)componentManager.getProperty(ENTITY_MANAGER);
for(int i=14; i currentEntity.ch.length) {
//resize array; this case is hard to imagine...
char[] tempCh = currentEntity.ch;
currentEntity.ch = new char[length+currentEntity.count-currentEntity.position+1];
System.arraycopy(tempCh, 0, currentEntity.ch, 0, tempCh.length);
}
if(currentEntity.position < length) {
// have to move sensitive stuff out of the way...
System.arraycopy(currentEntity.ch, currentEntity.position, currentEntity.ch, length, currentEntity.count-currentEntity.position);
currentEntity.count += length-currentEntity.position;
} else {
// have to reintroduce some whitespace so this parses:
for(int i=length; i