/*******************************************************************************
* 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.HeadingAttributes;
import org.eclipse.mylyn.wikitext.parser.markup.Block;
/**
* @author David Green
*/
public class HeadingBlock extends Block {
private static final Pattern startPattern = Pattern.compile("---(\\+{1,6})\\s*(!!\\s*)?(.*)"); //$NON-NLS-1$
private Matcher matcher;
@Override
public int processLineContent(String line, int offset) {
offset = matcher.start(3);
int level = matcher.group(1).length();
String bangEscape = matcher.group(2);
boolean omitFromToc = false;
if (bangEscape != null && bangEscape.length() > 0) {
omitFromToc = true;
}
if (offset > 0 && level > 0) {
HeadingAttributes attributes = new HeadingAttributes();
attributes.setOmitFromTableOfContents(omitFromToc);
attributes.setId(state.getIdGenerator().newId("h" + level, line.substring(offset))); //$NON-NLS-1$
builder.beginHeading(level, attributes);
builder.characters(line.substring(offset).trim());
builder.endHeading();
}
setClosed(true);
return -1;
}
@Override
public boolean canStart(String line, int lineOffset) {
if (lineOffset == 0) {
matcher = startPattern.matcher(line);
return matcher.matches();
} else {
matcher = null;
return false;
}
}
}