| /* |
| * 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. |
| */ |
| package org.netbeans.modules.html.parser; |
| |
| import java.io.IOException; |
| import java.io.StringReader; |
| import java.util.ArrayList; |
| import java.util.Collection; |
| import java.util.Collections; |
| import java.util.Map; |
| import java.util.logging.Level; |
| import java.util.logging.Logger; |
| import nu.validator.htmlparser.common.XmlViolationPolicy; |
| import nu.validator.htmlparser.impl.ErrorReportingTokenizer; |
| import nu.validator.htmlparser.impl.Tokenizer; |
| import nu.validator.htmlparser.io.Driver; |
| import org.netbeans.modules.html.editor.lib.api.*; |
| import org.netbeans.modules.html.editor.lib.api.elements.Element; |
| import org.netbeans.modules.html.editor.lib.api.elements.ElementUtils; |
| import org.netbeans.modules.html.editor.lib.api.elements.Node; |
| import org.netbeans.modules.html.editor.lib.api.elements.OpenTag; |
| import org.netbeans.modules.html.editor.lib.api.foreign.MaskingChSReader; |
| import org.netbeans.modules.html.editor.lib.api.model.HtmlModel; |
| import org.netbeans.modules.html.editor.lib.api.model.HtmlModelFactory; |
| import org.netbeans.modules.html.editor.lib.api.model.HtmlTag; |
| import org.openide.util.Lookup; |
| import org.openide.util.lookup.ServiceProvider; |
| import org.xml.sax.ErrorHandler; |
| import org.xml.sax.InputSource; |
| import org.xml.sax.SAXException; |
| import org.xml.sax.SAXParseException; |
| |
| /** |
| * |
| * @author marekfukala |
| */ |
| @ServiceProvider(service = HtmlParser.class, position = 100) |
| public class Html5Parser implements HtmlParser { |
| |
| @Override |
| public HtmlParseResult parse(HtmlSource source, HtmlVersion preferedVersion, Lookup lookup) throws ParseException { |
| try { |
| CharSequence sourceCode = source.getSourceCode(); |
| MaskedAreas maskedAreas = lookup.lookup(MaskedAreas.class); |
| |
| InputSource is; |
| //backward compatibility |
| if(maskedAreas == null) { |
| //pre html.editor.lib/3.2 |
| is = new InputSource(new StringReader(sourceCode.toString())); |
| } else { |
| is = new InputSource(new MaskingChSReader(sourceCode, maskedAreas.positions(), maskedAreas.lens())); |
| } |
| |
| final ParseTreeBuilder treeBuilder = new ParseTreeBuilder(sourceCode, lookup); |
| // Needed for HTML5 parsing - without this, parser mangles |
| // names to comply with XML rules |
| treeBuilder.setNamePolicy(XmlViolationPolicy.ALLOW); |
| final Tokenizer tokenizer = new ErrorReportingTokenizer(treeBuilder); |
| |
| Driver driver = new Driver(tokenizer); |
| driver.setTransitionHandler(treeBuilder); |
| |
| final Collection<ProblemDescription> problems = new ArrayList<ProblemDescription>(); |
| driver.setErrorHandler(new ErrorHandler() { |
| |
| @Override |
| public void warning(SAXParseException saxpe) throws SAXException { |
| reportProblem(saxpe.getLocalizedMessage(), ProblemDescription.WARNING); |
| |
| } |
| |
| @Override |
| public void error(SAXParseException saxpe) throws SAXException { |
| reportProblem(saxpe.getLocalizedMessage(), ProblemDescription.ERROR); |
| } |
| |
| @Override |
| public void fatalError(SAXParseException saxpe) throws SAXException { |
| reportProblem(saxpe.getLocalizedMessage(), ProblemDescription.FATAL); |
| } |
| |
| private void reportProblem(String message, int type) { |
| problems.add(ProblemDescription.create( |
| "html5.parser", //NOI18N |
| message, |
| type, |
| treeBuilder.getOffset(), |
| treeBuilder.getOffset())); |
| } |
| }); |
| driver.tokenize(is); |
| Node root = treeBuilder.getRoot(); |
| |
| return new Html5ParserResult(source, root, problems, preferedVersion); |
| |
| } catch (SAXException ex) { |
| throw new ParseException(ex); |
| } catch (IOException ex) { |
| throw new ParseException(ex); |
| } catch (AssertionError e) { |
| //issue #194037 handling - under some circumstances the parser may throw assertion error |
| //in these cases the problem is more likely in the parser itself than in netbeans |
| //To minimalize the user impact on non-fcs version (assertions enabled), |
| //just log the assertion error and return fake parser result |
| |
| StringBuilder msg = new StringBuilder(); |
| msg.append("An internal parser error occured"); //NOI18N |
| if (source.getSourceFileObject() != null) { |
| msg.append(" when parsing "); //NOI18N |
| msg.append(source.getSourceFileObject().getPath()); |
| } |
| |
| Logger.getAnonymousLogger().log(Level.INFO, msg.toString(), e); |
| |
| ElementsFactory factory = new ElementsFactory(source.getSourceCode()); |
| return new Html5ParserResult(source, factory.createRoot(), |
| Collections.<ProblemDescription>emptyList(), preferedVersion); |
| } |
| } |
| |
| @Override |
| public boolean canParse(HtmlVersion version) { |
| return version == HtmlVersion.HTML5 |
| || version == HtmlVersion.HTML32 |
| || version == HtmlVersion.HTML41_STRICT |
| || version == HtmlVersion.HTML41_TRANSATIONAL |
| || version == HtmlVersion.HTML41_FRAMESET |
| || version == HtmlVersion.HTML40_STRICT |
| || version == HtmlVersion.HTML40_TRANSATIONAL |
| || version == HtmlVersion.HTML40_FRAMESET; |
| } |
| |
| /** |
| * |
| * @deprecated |
| */ |
| @Override |
| @Deprecated |
| public HtmlModel getModel(HtmlVersion version) { |
| return null; |
| } |
| |
| /** |
| * @deprecated |
| */ |
| @Override |
| @Deprecated |
| public String getName() { |
| return null; |
| } |
| |
| private static class Html5ParserResult extends DefaultHtmlParseResult { |
| |
| public Html5ParserResult(HtmlSource source, Node root, Collection<ProblemDescription> problems, HtmlVersion version) { |
| super(source, root, problems, version); |
| } |
| |
| @Override |
| public HtmlModel model() { |
| return HtmlModelFactory.getModel(version()); |
| } |
| |
| @Override |
| public Collection<HtmlTag> getPossibleOpenTags(Element afterNode) { |
| return ElementUtils.getPossibleOpenTags(model(), afterNode); |
| } |
| |
| @Override |
| public Map<HtmlTag, OpenTag> getPossibleCloseTags(Element node) { |
| return ElementUtils.getPossibleCloseTags(model(), node); |
| } |
| |
| } |
| |
| } |