/*******************************************************************************
* Copyright (c) 2007, 2011 David Green 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:
* David Green - initial API and implementation
*******************************************************************************/
package org.eclipse.mylyn.wikitext.twiki.internal.block;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import org.eclipse.mylyn.wikitext.parser.Attributes;
import org.eclipse.mylyn.wikitext.parser.DocumentBuilder.BlockType;
import org.eclipse.mylyn.wikitext.parser.markup.Block;
import org.eclipse.mylyn.wikitext.twiki.TWikiLanguage;
/**
* A literal block disables wiki text but allows for nested HTML tags.
*
* @see VerbatimBlock
* @author David Green
*/
public class LiteralBlock extends Block {
private static final Pattern startPattern = Pattern.compile("\\s*<literal>(.*)"); //$NON-NLS-1$
private static final Pattern endPattern = Pattern.compile("\\s*</literal>(.*)"); //$NON-NLS-1$
private int blockLineCount = 0;
private Matcher matcher;
@Override
public int processLineContent(String line, int offset) {
if (blockLineCount++ == 0) {
offset = matcher.start(1);
((TWikiLanguage) markupLanguage).setLiteralMode(true);
builder.beginBlock(BlockType.PARAGRAPH, new Attributes());
} else {
Matcher endMatcher = endPattern.matcher(line);
if (endMatcher.matches()) {
setClosed(true);
return endMatcher.start(1);
}
}
markupLanguage.emitMarkupLine(parser, state, line, offset);
builder.characters("\n"); //$NON-NLS-1$
return -1;
}
@Override
public void setClosed(boolean closed) {
if (closed && !isClosed()) {
builder.endBlock();
((TWikiLanguage) markupLanguage).setLiteralMode(false);
}
super.setClosed(closed);
}
@Override
public boolean canStart(String line, int lineOffset) {
if (lineOffset == 0) {
matcher = startPattern.matcher(line);
blockLineCount = 0;
return matcher.matches();
} else {
matcher = null;
return false;
}
}
}