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Java API for XML Processing Reference Implementation
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*
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*
* The contents of this file are subject to the terms of either the GNU
* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can
* obtain a copy of the License at
* https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
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* language governing permissions and limitations under the License.
*
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* file and include the License file at packager/legal/LICENSE.txt.
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* exception as provided by Oracle in the GPL Version 2 section of the License
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*
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* this work for additional information regarding copyright ownership.
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* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
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* Unless required by applicable law or agreed to in writing, software
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/*
* $Id: StringValueHandler.java,v 1.11 2010-11-01 04:34:29 joehw Exp $
*/
package com.sun.org.apache.xalan.internal.xsltc.runtime;
import org.xml.sax.SAXException;
import com.sun.org.apache.xml.internal.serializer.EmptySerializer;
/**
* @author Jacek Ambroziak
* @author Santiago Pericas-Geertsen
* @author Morten Jorgensen
*/
public final class StringValueHandler extends EmptySerializer {
private StringBuilder _buffer = new StringBuilder();
private String _str = null;
private static final String EMPTY_STR = "";
private boolean m_escaping = false;
private int _nestedLevel = 0;
public void characters(char[] ch, int off, int len)
throws SAXException
{
if (_nestedLevel > 0)
return;
if (_str != null) {
_buffer.append(_str);
_str = null;
}
_buffer.append(ch, off, len);
}
public String getValue() {
if (_buffer.length() != 0) {
String result = _buffer.toString();
_buffer.setLength(0);
return result;
}
else {
String result = _str;
_str = null;
return (result != null) ? result : EMPTY_STR;
}
}
public void characters(String characters) throws SAXException {
if (_nestedLevel > 0)
return;
if (_str == null && _buffer.length() == 0) {
_str = characters;
}
else {
if (_str != null) {
_buffer.append(_str);
_str = null;
}
_buffer.append(characters);
}
}
public void startElement(String qname) throws SAXException {
_nestedLevel++;
}
public void endElement(String qname) throws SAXException {
_nestedLevel--;
}
// Override the setEscaping method just to indicate that this class is
// aware that that method might be called.
public boolean setEscaping(boolean bool) {
boolean oldEscaping = m_escaping;
m_escaping = bool;
return bool;
}
/**
* The value of a PI must not contain the substring "?>". Should
* that substring be present, replace it by "? >".
*/
public String getValueOfPI() {
final String value = getValue();
if (value.indexOf("?>") > 0) {
final int n = value.length();
final StringBuilder valueOfPI = new StringBuilder();
for (int i = 0; i < n;) {
final char ch = value.charAt(i++);
if (ch == '?' && value.charAt(i) == '>') {
valueOfPI.append("? >"); i++;
}
else {
valueOfPI.append(ch);
}
}
return valueOfPI.toString();
}
return value;
}
}