| package org.apache.maven.doxia.module.twiki.parser; |
| |
| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| |
| import java.util.regex.Matcher; |
| import java.util.regex.Pattern; |
| |
| import org.apache.maven.doxia.util.ByLineSource; |
| import org.apache.maven.doxia.parser.ParseException; |
| |
| /** |
| * Block that represents an horizontal rule |
| * |
| * @author Juan F. Codagnone |
| * @version $Id$ |
| */ |
| public class HRuleBlockParser |
| implements BlockParser |
| { |
| /** |
| * pattern used to detect horizontal rulers |
| */ |
| private static final Pattern HRULE_PATTERN = Pattern.compile( "^(---)(-*)(.*)$" ); |
| |
| /** {@inheritDoc} */ |
| public final boolean accept( final String line ) |
| { |
| final Matcher m = HRULE_PATTERN.matcher( line ); |
| boolean ret = false; |
| |
| if ( m.lookingAt() ) |
| { |
| final int textGroup = 3; |
| String s = m.group( textGroup ); |
| if ( s != null && !s.startsWith( "+" ) ) |
| { |
| ret = true; |
| } |
| } |
| |
| return ret; |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public final Block visit( final String line, final ByLineSource source ) |
| throws ParseException |
| { |
| Block ret = new HorizontalRuleBlock(); |
| final Matcher matcher = HRULE_PATTERN.matcher( line ); |
| if ( matcher.lookingAt() ) |
| { |
| final int textGroup = 3; |
| source.unget( matcher.group( textGroup ) ); |
| } |
| else |
| { |
| throw new ParseException( "i was expecting a hruler!" ); |
| } |
| |
| return ret; |
| } |
| } |