001/* 002 * Licensed to the Apache Software Foundation (ASF) under one 003 * or more contributor license agreements. See the NOTICE file 004 * distributed with this work for additional information 005 * regarding copyright ownership. The ASF licenses this file 006 * to you under the Apache License, Version 2.0 (the 007 * "License"); you may not use this file except in compliance 008 * with the License. You may obtain a copy of the License at 009 * 010 * http://www.apache.org/licenses/LICENSE-2.0 011 * 012 * Unless required by applicable law or agreed to in writing, 013 * software distributed under the License is distributed on an 014 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 015 * KIND, either express or implied. See the License for the 016 * specific language governing permissions and limitations 017 * under the License. 018 */ 019package org.apache.maven.doxia.module.fml; 020 021import org.apache.maven.doxia.macro.MacroExecutionException; 022import org.apache.maven.doxia.parser.Xhtml5BaseParser; 023import org.apache.maven.doxia.sink.Sink; 024import org.apache.maven.doxia.sink.impl.SinkEventAttributeSet; 025import org.codehaus.plexus.util.xml.pull.XmlPullParser; 026import org.codehaus.plexus.util.xml.pull.XmlPullParserException; 027import org.slf4j.Logger; 028import org.slf4j.LoggerFactory; 029 030/** 031 * Parse Fml questions and answers, these may contain arbitrary xdoc elements. 032 * 033 * @author ltheussl 034 * @since 1.0 035 */ 036public class FmlContentParser extends Xhtml5BaseParser implements FmlMarkup { 037 private static final Logger LOGGER = LoggerFactory.getLogger(FmlContentParser.class); 038 039 /** Empty elements don't write a closing tag. */ 040 private boolean isEmptyElement; 041 042 /** {@inheritDoc} */ 043 protected void handleStartTag(XmlPullParser parser, Sink sink) 044 throws XmlPullParserException, MacroExecutionException { 045 isEmptyElement = parser.isEmptyElementTag(); 046 047 if (parser.getName().equals(QUESTION_TAG.toString()) 048 || parser.getName().equals(TITLE.toString()) 049 || parser.getName().equals(ANSWER_TAG.toString())) { 050 // ignore 051 return; 052 } else if (parser.getName().equals(SOURCE_TAG.toString())) { 053 verbatim(); 054 055 sink.verbatim(SinkEventAttributeSet.SOURCE); 056 } else if (!baseStartTag(parser, sink)) { 057 if (isEmptyElement) { 058 handleUnknown(parser, sink, TAG_TYPE_SIMPLE); 059 } else { 060 handleUnknown(parser, sink, TAG_TYPE_START); 061 } 062 063 LOGGER.warn( 064 "Unrecognized fml tag <{}> at [{}:{}]", 065 parser.getName(), 066 parser.getLineNumber(), 067 parser.getColumnNumber()); 068 } 069 } 070 071 /** {@inheritDoc} */ 072 protected void handleEndTag(XmlPullParser parser, Sink sink) 073 throws XmlPullParserException, MacroExecutionException { 074 if (parser.getName().equals(QUESTION_TAG.toString()) 075 || parser.getName().equals(TITLE.toString()) 076 || parser.getName().equals(ANSWER_TAG.toString())) { 077 // ignore 078 return; 079 } else if (parser.getName().equals(SOURCE_TAG.toString())) { 080 verbatim_(); 081 082 sink.verbatim_(); 083 } else if (!baseEndTag(parser, sink)) { 084 if (!isEmptyElement) { 085 handleUnknown(parser, sink, TAG_TYPE_END); 086 } 087 } 088 089 isEmptyElement = false; 090 } 091 092 /** 093 * {@inheritDoc} 094 */ 095 protected void init() { 096 super.init(); 097 098 this.isEmptyElement = false; 099 } 100}