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/*******************************************************************************
* Copyright (c) 2007, 2015 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.mediawiki.internal.validation;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import org.eclipse.mylyn.wikitext.validation.ValidationProblem;
import org.eclipse.mylyn.wikitext.validation.ValidationProblem.Severity;
import org.eclipse.mylyn.wikitext.validation.ValidationRule;
/**
* a validation rule that tests for malformed comment delimiters.
*
* @author David Green
*/
public class CommentValidationRule extends ValidationRule {
private static Pattern commentPattern = Pattern.compile("(<!-{3,}|-{3,}>)", Pattern.MULTILINE); //$NON-NLS-1$
public CommentValidationRule() {
}
@Override
public ValidationProblem findProblem(String markup, int offset, int length) {
Matcher matcher = commentPattern.matcher(markup);
if (offset > 0 || length != markup.length()) {
matcher.region(offset, offset + length);
}
if (matcher.find()) {
int problemOffset = matcher.start();
int problemLength = Math.max(2, matcher.end() - problemOffset);
return new ValidationProblem(Severity.WARNING, Messages.getString("CommentValidationRule.1"), //$NON-NLS-1$
problemOffset, problemLength);
}
return null;
}
}
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