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A processor for parsing, validating, serializing and manipulating XML, written in Java
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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 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 $Id$
*/
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