/*******************************************************************************
* Copyright (c) 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.ant.internal.ui.editor.text;
import org.eclipse.jface.text.rules.ICharacterScanner;
import org.eclipse.jface.text.rules.IToken;
import org.eclipse.jface.text.rules.MultiLineRule;
public class DocTypeRule extends MultiLineRule {
private int fEmbeddedStart = 0;
public DocTypeRule(IToken token) {
super("<!DOCTYPE", ">", token); //$NON-NLS-1$ //$NON-NLS-2$
}
/*
* (non-Javadoc)
*
* @see org.eclipse.jface.text.rules.PatternRule#endSequenceDetected(org.eclipse.jface.text.rules.ICharacterScanner)
*/
@Override
protected boolean endSequenceDetected(ICharacterScanner scanner) {
int c;
while ((c = scanner.read()) != ICharacterScanner.EOF) {
if (c == fEscapeCharacter) {
// Skip the escaped character.
scanner.read();
} else if (c == '<') {
fEmbeddedStart++;
} else if (c == '>') {
if (fEmbeddedStart == 0) {
return true;
}
fEmbeddedStart--;
}
}
scanner.unread();
return false;
}
}