/*******************************************************************************
* Copyright (c) 2004, 2006 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.jst.jsp.core.internal.java;
import java.util.Properties;
import com.ibm.icu.util.StringTokenizer;
import org.eclipse.wst.sse.core.internal.provisional.text.IStructuredDocumentRegion;
import org.eclipse.wst.sse.core.internal.provisional.text.ITextRegion;
/**
* class to handle chunks of text/regions
* with escaped character data
* @author pavery
*/
public class EscapedTextUtil {
public static Properties fXMLtoJavaLookup = null;
/**
* @return unescaped full text of that region, "" if there is no text
*/
public static String getUnescapedText(IStructuredDocumentRegion parent, ITextRegion r) {
String test = (parent != r) ? parent.getFullText(r) : parent.getFullText();
return getUnescapedText(test);
}
public static String getUnescapedText(String test) {
initLookup();
StringBuffer buffer = new StringBuffer();
if (test != null) {
StringTokenizer st = new StringTokenizer(test, "&;", true); //$NON-NLS-1$
String tok1, tok2, tok3, transString;
while (st.hasMoreTokens()) {
tok1 = tok2 = tok3 = transString = ""; //$NON-NLS-1$
tok1 = st.nextToken();
if (tok1.equals("&") && st.hasMoreTokens()) //$NON-NLS-1$
{
tok2 = st.nextToken();
if (st.hasMoreTokens()) {
tok3 = st.nextToken();
}
}
if (!(transString = fXMLtoJavaLookup.getProperty(tok1 + tok2 + tok3, "")).equals("")) //$NON-NLS-2$ //$NON-NLS-1$
{
buffer.append(transString);
}
else {
buffer.append(tok1 + tok2 + tok3);
}
}
return buffer.toString();
}
return ""; //$NON-NLS-1$
}
/**
* initialize lookup tables
*/
private static void initLookup() {
fXMLtoJavaLookup = new Properties();
fXMLtoJavaLookup.setProperty("'", "'"); //$NON-NLS-2$ //$NON-NLS-1$
fXMLtoJavaLookup.setProperty(""", "\""); //$NON-NLS-2$ //$NON-NLS-1$
fXMLtoJavaLookup.setProperty("&", "&"); //$NON-NLS-2$ //$NON-NLS-1$
fXMLtoJavaLookup.setProperty("<", "<"); //$NON-NLS-2$ //$NON-NLS-1$
fXMLtoJavaLookup.setProperty(">", ">"); //$NON-NLS-2$ //$NON-NLS-1$
fXMLtoJavaLookup.setProperty(" ", " "); //$NON-NLS-2$ //$NON-NLS-1$
}
/**
* Get the String representation of an entity reference.
*/
public static String translateEntityReference(String entity) {
return fXMLtoJavaLookup.getProperty(entity, entity);
}
}