| 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.ArrayList; |
| import java.util.Arrays; |
| import java.util.List; |
| import java.util.regex.Matcher; |
| import java.util.regex.Pattern; |
| |
| import org.apache.maven.doxia.util.ByLineSource; |
| import org.apache.maven.doxia.parser.ParseException; |
| |
| /** |
| * Parse paragraphs. |
| * |
| * @author Juan F. Codagnone |
| * @version $Id$ |
| */ |
| public class ParagraphBlockParser |
| implements BlockParser |
| { |
| /** |
| * pattern used to dectect end of paragraph |
| */ |
| private final Pattern paragraphSeparator = Pattern.compile( "^(\\s*)$" ); |
| |
| /** |
| * {@link SectionBlockParser} to use. injected |
| */ |
| private SectionBlockParser sectionParser; |
| |
| /** |
| * {@link ListBlockParser} to use. injected |
| */ |
| private GenericListBlockParser listParser; |
| |
| /** |
| * {@link FormatedTextParser} to use. injected |
| */ |
| private FormatedTextParser textParser; |
| |
| /** |
| * {@link HRuleBlockParser} to use. injected |
| */ |
| private HRuleBlockParser hrulerParser; |
| |
| /** |
| * {@link TableBlockParser} to use. injected |
| */ |
| private TableBlockParser tableBlockParser; |
| |
| /** |
| * {@link TableBlockParser} to use. injected |
| */ |
| private VerbatimBlockParser verbatimParser; |
| |
| /** |
| * no operation block |
| */ |
| private static final NopBlock NOP = new NopBlock(); |
| |
| /** {@inheritDoc} */ |
| public final boolean accept( final String line ) |
| { |
| return !sectionParser.accept( line ) && !hrulerParser.accept( line ) && !verbatimParser.accept( line ); |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public final Block visit( final String line, final ByLineSource source ) |
| throws ParseException |
| { |
| StringBuilder sb = new StringBuilder(); |
| List<Block> childs = new ArrayList<>(); |
| |
| boolean sawText = false; |
| |
| /* |
| * 1. Skip begininig new lines |
| * 2. Get the text, while \n\n is not found |
| */ |
| boolean pre = false; |
| String l = line; |
| do |
| { |
| Matcher m = paragraphSeparator.matcher( l ); |
| |
| if ( m.lookingAt() ) |
| { |
| if ( sawText ) |
| { |
| break; |
| } |
| } |
| else |
| { |
| sawText = true; |
| |
| /* be able to parse lists / enumerations */ |
| if ( listParser.accept( l ) ) |
| { |
| if ( sb.length() != 0 ) |
| { |
| childs.addAll( Arrays.asList( textParser.parse( sb.toString().trim() ) ) ); |
| sb = new StringBuilder(); |
| } |
| childs.add( listParser.visit( l, source ) ); |
| } |
| else if ( tableBlockParser.accept( l ) ) |
| { |
| childs.add( tableBlockParser.visit( l, source ) ); |
| } |
| else |
| { |
| sb.append( l ); |
| // specific |
| if ( l.contains( "<pre>" ) ) |
| { |
| pre = true; |
| } |
| if ( l.contains( "</pre>" ) ) |
| { |
| pre = false; |
| } |
| |
| if ( !pre ) |
| { |
| sb.append( " " ); |
| } |
| else |
| { |
| // TODO use EOL |
| sb.append( "\n" ); |
| } |
| } |
| } |
| l = source.getNextLine(); |
| } |
| while ( l != null && accept( l ) ); |
| |
| if ( line != null ) |
| { |
| source.ungetLine(); |
| } |
| |
| if ( sb.length() != 0 ) |
| { |
| childs.addAll( Arrays.asList( textParser.parse( sb.toString().trim() ) ) ); |
| sb = new StringBuilder(); |
| } |
| |
| if ( childs.size() == 0 ) |
| { |
| return NOP; |
| } |
| |
| return new ParagraphBlock( childs.toArray( new Block[] {} ) ); |
| } |
| |
| /** |
| * Sets the sectionParser. |
| * |
| * @param aSectionParser <code>SectionBlockParser</code> with the sectionParser. |
| */ |
| public final void setSectionParser( final SectionBlockParser aSectionParser ) |
| { |
| if ( aSectionParser == null ) |
| { |
| throw new IllegalArgumentException( "arg can't be null" ); |
| } |
| this.sectionParser = aSectionParser; |
| } |
| |
| /** |
| * Sets the listParser. |
| * |
| * @param aListParser <code>ListBlockParser</code> with the listParser. |
| */ |
| public final void setListParser( final GenericListBlockParser aListParser ) |
| { |
| if ( aListParser == null ) |
| { |
| throw new IllegalArgumentException( "arg can't be null" ); |
| } |
| |
| this.listParser = aListParser; |
| } |
| |
| /** |
| * Sets the formatTextParser. |
| * |
| * @param aTextParser <code>FormatedTextParser</code> |
| * with the formatTextParser. |
| */ |
| public final void setTextParser( final FormatedTextParser aTextParser ) |
| { |
| if ( aTextParser == null ) |
| { |
| throw new IllegalArgumentException( "arg can't be null" ); |
| } |
| this.textParser = aTextParser; |
| } |
| |
| /** |
| * Sets the hrulerParser. |
| * |
| * @param aHrulerParser <code>HRuleBlockParser</code> with the hrulerParser. |
| */ |
| public final void setHrulerParser( final HRuleBlockParser aHrulerParser ) |
| { |
| if ( aHrulerParser == null ) |
| { |
| throw new IllegalArgumentException( "arg can't be null" ); |
| } |
| |
| this.hrulerParser = aHrulerParser; |
| } |
| |
| /** |
| * <p>Setter for the field <code>tableBlockParser</code>.</p> |
| * |
| * @param aTableBlockParser Table parser to use |
| */ |
| public final void setTableBlockParser( final TableBlockParser aTableBlockParser ) |
| { |
| if ( aTableBlockParser == null ) |
| { |
| throw new IllegalArgumentException( "arg can't be null" ); |
| } |
| |
| this.tableBlockParser = aTableBlockParser; |
| } |
| |
| /** |
| * Sets the verbatimParser. |
| * |
| * @param aVerbatimParser <code>VerbatimBlockParser</code> with the verbatimParser. |
| * @since 1.1 |
| */ |
| public final void setVerbatimParser( final VerbatimBlockParser aVerbatimParser ) |
| { |
| if ( aVerbatimParser == null ) |
| { |
| throw new IllegalArgumentException( "arg can't be null" ); |
| } |
| this.verbatimParser = aVerbatimParser; |
| } |
| } |