| package org.apache.maven.model.transform; |
| |
| /* |
| * 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.nio.file.Files; |
| import java.nio.file.Path; |
| import java.nio.file.Paths; |
| |
| import java.util.Objects; |
| import java.util.Optional; |
| import java.util.function.Function; |
| |
| import org.apache.maven.model.transform.sax.SAXEventUtils; |
| import org.xml.sax.Attributes; |
| import org.xml.sax.SAXException; |
| |
| /** |
| * <p> |
| * Transforms relativePath to version. |
| * We could decide to simply allow {@code <parent/>}, but let's require the GA for now for checking |
| * This filter does NOT remove the relativePath (which is done by {@link RelativePathXMLFilter}, it will only |
| * optionally include the version based on the path |
| * </p> |
| * |
| * @author Robert Scholte |
| * @since 4.0.0 |
| */ |
| class ParentXMLFilter |
| extends AbstractEventXMLFilter |
| { |
| private boolean parsingParent; |
| |
| // states |
| private String state; |
| |
| // whiteSpace after <parent>, to be used to position <version> |
| private String parentWhitespace = ""; |
| |
| private String groupId; |
| |
| private String artifactId; |
| |
| private String relativePath; |
| |
| private boolean hasVersion; |
| |
| private boolean hasRelativePath; |
| |
| private Optional<RelativeProject> resolvedParent; |
| |
| private final Function<Path, Optional<RelativeProject>> relativePathMapper; |
| |
| private Path projectPath; |
| |
| /** |
| * @param relativePathMapper |
| */ |
| ParentXMLFilter( Function<Path, Optional<RelativeProject>> relativePathMapper ) |
| { |
| this.relativePathMapper = relativePathMapper; |
| } |
| |
| public void setProjectPath( Path projectPath ) |
| { |
| this.projectPath = projectPath; |
| } |
| |
| @Override |
| protected boolean isParsing() |
| { |
| return parsingParent; |
| } |
| |
| @Override |
| protected String getState() |
| { |
| return state; |
| } |
| |
| @Override |
| public void startElement( String uri, final String localName, String qName, Attributes atts ) |
| throws SAXException |
| { |
| if ( !parsingParent && "parent".equals( localName ) ) |
| { |
| parsingParent = true; |
| } |
| |
| if ( parsingParent ) |
| { |
| state = localName; |
| |
| hasVersion |= "version".equals( localName ); |
| |
| // can be set to empty on purpose to enforce repository download |
| hasRelativePath |= "relativePath".equals( localName ); |
| } |
| |
| super.startElement( uri, localName, qName, atts ); |
| } |
| |
| @Override |
| public void characters( char[] ch, int start, int length ) |
| throws SAXException |
| { |
| if ( parsingParent ) |
| { |
| final String eventState = state; |
| |
| final String charSegment = new String( ch, start, length ); |
| |
| switch ( eventState ) |
| { |
| case "parent": |
| parentWhitespace = nullSafeAppend( parentWhitespace, charSegment ); |
| break; |
| case "relativePath": |
| relativePath = nullSafeAppend( relativePath, charSegment ); |
| break; |
| case "groupId": |
| groupId = nullSafeAppend( groupId, charSegment ); |
| break; |
| case "artifactId": |
| artifactId = nullSafeAppend( artifactId, charSegment ); |
| break; |
| default: |
| break; |
| } |
| } |
| |
| super.characters( ch, start, length ); |
| } |
| |
| @Override |
| public void endElement( String uri, final String localName, String qName ) |
| throws SAXException |
| { |
| if ( parsingParent ) |
| { |
| switch ( localName ) |
| { |
| case "parent": |
| if ( !hasVersion && ( !hasRelativePath || relativePath != null ) ) |
| { |
| resolvedParent = |
| resolveRelativePath( Paths.get( Objects.toString( relativePath, "../pom.xml" ) ) ); |
| } |
| else |
| { |
| resolvedParent = Optional.empty(); |
| } |
| |
| if ( !hasVersion && resolvedParent.isPresent() ) |
| { |
| try ( Includer i = super.include() ) |
| { |
| super.characters( parentWhitespace.toCharArray(), 0, |
| parentWhitespace.length() ); |
| |
| String versionQName = SAXEventUtils.renameQName( qName, "version" ); |
| |
| super.startElement( uri, "version", versionQName, null ); |
| |
| String resolvedParentVersion = resolvedParent.get().getVersion(); |
| |
| super.characters( resolvedParentVersion.toCharArray(), 0, |
| resolvedParentVersion.length() ); |
| |
| super.endElement( uri, "version", versionQName ); |
| } |
| } |
| super.executeEvents(); |
| |
| parsingParent = false; |
| break; |
| default: |
| // marker? |
| break; |
| } |
| } |
| |
| super.endElement( uri, localName, qName ); |
| state = ""; |
| } |
| |
| protected Optional<RelativeProject> resolveRelativePath( Path relativePath ) |
| { |
| Path pomPath = projectPath.resolve( relativePath ); |
| if ( Files.isDirectory( pomPath ) ) |
| { |
| pomPath = pomPath.resolve( "pom.xml" ); |
| } |
| |
| Optional<RelativeProject> mappedProject = relativePathMapper.apply( pomPath.normalize() ); |
| |
| if ( mappedProject.isPresent() ) |
| { |
| RelativeProject project = mappedProject.get(); |
| |
| if ( Objects.equals( groupId, project.getGroupId() ) |
| && Objects.equals( artifactId, project.getArtifactId() ) ) |
| { |
| return mappedProject; |
| } |
| } |
| return Optional.empty(); |
| } |
| } |