/*
* Copyright (C) 2006 Joe Walnes.
* Copyright (C) 2006, 2007 XStream Committers.
* All rights reserved.
*
* The software in this package is published under the terms of the BSD
* style license a copy of which has been included with this distribution in
* the LICENSE.txt file.
*
* Created on 22. April 2006 by Mauro Talevi
*/
package com.thoughtworks.xstream.io.xml;
/**
* Allows replacement of Strings in xml-friendly drivers to provide compatibility with XStream 1.1 format
*
* @author Mauro Talevi
* @since 1.2
*/
public class XStream11XmlFriendlyReplacer extends XmlFriendlyReplacer {
private char dollarReplacementInClass = '-';
private String dollarReplacementInField = "_DOLLAR_";
private String underscoreReplacementInField = "__";
private String noPackagePrefix = "default";
/**
* Default constructor.
*/
public XStream11XmlFriendlyReplacer() {
}
/**
* Noop implementation that does not unescape name. Used for XStream 1.1 compatibility.
* @param name the name of attribute or node
* @return The String with unescaped name
*/
public String unescapeName(String name) {
return name;
}
protected String escapeClassName(String className) {
// the $ used in inner class names is illegal as an xml element getNodeName
className = className.replace('$', dollarReplacementInClass);
// special case for classes named $Blah with no package; <-Blah> is illegal XML
if (className.charAt(0) == dollarReplacementInClass) {
className = noPackagePrefix + className;
}
return className;
}
protected String escapeFieldName(String fieldName) {
StringBuffer result = new StringBuffer();
int length = fieldName.length();
for(int i = 0; i < length; i++) {
char c = fieldName.charAt(i);
if (c == '$' ) {
result.append(dollarReplacementInField);
} else if (c == '_') {
result.append(underscoreReplacementInField);
} else {
result.append(c);
}
}
return result.toString();
}
protected String unescapeClassName(String className) {
// special case for classes named $Blah with no package; <-Blah> is illegal XML
if (className.startsWith(noPackagePrefix+dollarReplacementInClass)) {
className = className.substring(noPackagePrefix.length());
}
// the $ used in inner class names is illegal as an xml element getNodeName
className = className.replace(dollarReplacementInClass, '$');
return className;
}
protected String unescapeFieldName(String xmlName) {
StringBuffer result = new StringBuffer();
int length = xmlName.length();
for(int i = 0; i < length; i++) {
char c = xmlName.charAt(i);
if ( stringFoundAt(xmlName, i,underscoreReplacementInField)) {
i +=underscoreReplacementInField.length() - 1;
result.append('_');
} else if ( stringFoundAt(xmlName, i,dollarReplacementInField)) {
i +=dollarReplacementInField.length() - 1;
result.append('$');
} else {
result.append(c);
}
}
return result.toString();
}
private boolean stringFoundAt(String name, int i, String replacement) {
if ( name.length() >= i + replacement.length()
&& name.substring(i, i + replacement.length()).equals(replacement) ){
return true;
}
return false;
}
}