package org.apache.maven.doxia.module.markdown;
/*
* 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.io.IOException;
import java.io.Reader;
import java.io.StringReader;
import org.apache.maven.doxia.module.xhtml.XhtmlParser;
import org.apache.maven.doxia.parser.ParseException;
import org.apache.maven.doxia.parser.Parser;
import org.apache.maven.doxia.sink.Sink;
import org.codehaus.plexus.component.annotations.Component;
import org.codehaus.plexus.util.IOUtil;
import org.pegdown.Extensions;
import org.pegdown.PegDownProcessor;
import org.pegdown.ast.RootNode;
/**
* Implementation of {@link org.apache.maven.doxia.parser.Parser} for Markdown documents.
* <p/>
* Defers parsing to the <a href="http://pegdown.org">PegDown library</a>.
*
* @author Julien Nicoulaud <julien.nicoulaud@gmail.com>
* @since 1.3
*/
@Component( role = Parser.class, hint = "markdown" )
public class MarkdownParser
extends XhtmlParser
{
/**
* The role hint for the {@link MarkdownParser} Plexus component.
*/
public static final String ROLE_HINT = "markdown";
/**
* The {@link PegDownProcessor} used to convert Pegdown documents to HTML.
*/
protected static final PegDownProcessor PEGDOWN_PROCESSOR =
new PegDownProcessor( Extensions.ALL & ~Extensions.HARDWRAPS );
/**
* {@inheritDoc}
*/
@Override
public void parse( Reader source, Sink sink )
throws ParseException
{
try
{
RootNode rootNode = PEGDOWN_PROCESSOR.parseMarkdown( IOUtil.toString( source ).toCharArray() );
String markdownAsHtml = new MarkdownToDoxiaHtmlSerializer().toHtml( rootNode );
super.parse( new StringReader( "<html><body>" + markdownAsHtml + "</body></html>" ), sink );
}
catch ( IOException e )
{
throw new ParseException( "Failed reading Markdown source document", e );
}
}
}