package org.apache.maven.doxia.module.confluence;

 /*

  * 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.Reader;

 import java.util.ArrayList;

 import java.util.List;

 import org.apache.maven.doxia.module.confluence.parser.Block;

 import org.apache.maven.doxia.module.confluence.parser.BlockParser;

 import org.apache.maven.doxia.module.confluence.parser.DefinitionListBlockParser;

 import org.apache.maven.doxia.module.confluence.parser.FigureBlockParser;

 import org.apache.maven.doxia.module.confluence.parser.HorizontalRuleBlockParser;

 import org.apache.maven.doxia.module.confluence.parser.ParagraphBlockParser;

 import org.apache.maven.doxia.module.confluence.parser.SectionBlockParser;

 import org.apache.maven.doxia.module.confluence.parser.VerbatimBlockParser;

 import org.apache.maven.doxia.module.confluence.parser.list.ListBlockParser;

 import org.apache.maven.doxia.module.confluence.parser.table.TableBlockParser;

 import org.apache.maven.doxia.parser.AbstractTextParser;

 import org.apache.maven.doxia.parser.ParseException;

 import org.apache.maven.doxia.sink.Sink;

 import org.apache.maven.doxia.util.ByLineReaderSource;

 import org.apache.maven.doxia.util.ByLineSource;

 /**

  * Parse the <a href="http://www.atlassian.com/software/confluence/">Confluence</a>.

  * See <a href="http://confluence.atlassian.com/display/CONF25/Confluence+Notation+Guide+Overview">

  * Confluence Notation Guide Overview</a>

  *

  * @version $Id: ConfluenceParser.java 1090706 2011-04-09 23:15:28Z hboutemy $

  * @since 1.0

  * @plexus.component role="org.apache.maven.doxia.parser.Parser" role-hint="confluence"

  */

 public class ConfluenceParser

     extends AbstractTextParser

 {

     private BlockParser[] parsers;

     /**

      * <p>Constructor for ConfluenceParser.</p>

      */

     public ConfluenceParser()

     {

         init();

     }

     private List<Block> parse( ByLineSource source )

         throws ParseException

     {

         init();

         List<Block> blocks = new ArrayList<Block>();

         String line;

         while ( ( line = source.getNextLine() ) != null )

         {

             //boolean accepted = false;

             for ( int i = 0; i < parsers.length; i++ )

             {

                 BlockParser parser = parsers[i];

                 if ( line.trim().length() == 0 )

                 {

                     continue;

                 }

                 if ( parser.accept( line, source ) )

                 {

                     //accepted = true;

                     blocks.add( parser.visit( line, source ) );

                     break;

                 }

             }

 /*

             if ( !accepted )

             {

                 throw new ParseException( "don't know how to handle line: " + source.getLineNumber() + ": " + line );

             }

 */

         }

         return blocks;

     }

     /** {@inheritDoc} */

     public synchronized void parse( Reader source, Sink sink )

         throws ParseException

     {

         ByLineSource src = new ByLineReaderSource( source );

         try

         {

             List<Block> blocks = parse( src );

             sink.head();

             sink.head_();

             sink.body();

             for ( Block block : blocks )

             {

                 block.traverse( sink );

             }

             sink.body_();

         }

         catch ( Exception e )

         {

             // TODO handle column number

             throw new ParseException( e, src.getName(), src.getLineNumber(), -1 );

         }

         finally

         {

             setSecondParsing( false );

             init();

         }

     }

     /** {@inheritDoc} */

     protected void init()

     {

         super.init();

         BlockParser headingParser = new SectionBlockParser();

         BlockParser figureParser = new FigureBlockParser();

         BlockParser verbatimParser = new VerbatimBlockParser();

         BlockParser definitionParser = new DefinitionListBlockParser();

         BlockParser horizontalRuleParser = new HorizontalRuleBlockParser();

         BlockParser listParser = new ListBlockParser();

         BlockParser tableParser = new TableBlockParser();

         BlockParser[] subparsers =

                 new BlockParser[] { headingParser, figureParser, listParser, tableParser, verbatimParser };

         BlockParser paragraphParser = new ParagraphBlockParser( subparsers );

         this.parsers =

             new BlockParser[] { headingParser, figureParser, verbatimParser, definitionParser, horizontalRuleParser,

                 listParser, tableParser, paragraphParser };

     }

 }