cstamas commented on a change in pull request #92: URL: https://github.com/apache/maven-shade-plugin/pull/92#discussion_r636335214
########## File path: src/main/java/org/apache/maven/plugins/shade/resource/SisuIndexResourceTransformer.java ########## @@ -0,0 +1,130 @@ +package org.apache.maven.plugins.shade.resource; + +/* + * 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.ByteArrayInputStream; +import java.io.ByteArrayOutputStream; +import java.io.IOException; +import java.io.InputStream; +import java.nio.charset.StandardCharsets; +import java.util.List; +import java.util.Scanner; +import java.util.jar.JarEntry; +import java.util.jar.JarOutputStream; + +import org.apache.commons.io.IOUtils; +import org.apache.maven.plugins.shade.relocation.Relocator; + +/** + * Resource transformer that relocates classes in {@code META-INF/sisu/javax.inject.Named} and appends resources + * into a single resource. + * + * @since 3.3.0 + */ +public class SisuIndexResourceTransformer + extends AbstractCompatibilityTransformer +{ + private static final String SISU_INDEX_PATH = "META-INF/sisu/javax.inject.Named"; + + private static final String NEWLINE = "\n"; + + private ServiceStream serviceStream; + + private long time = Long.MIN_VALUE; + + @Override + public boolean canTransformResource( final String resource ) + { + return resource.equals( SISU_INDEX_PATH ); + } + + @Override + public void processResource( final String resource, + final InputStream is, + final List<Relocator> relocators, + long time ) throws IOException + { + if ( serviceStream == null ) + { + serviceStream = new ServiceStream(); + } + + final String content = IOUtils.toString( is, StandardCharsets.UTF_8 ); + Scanner scanner = new Scanner( content ); + while ( scanner.hasNextLine() ) + { + String relContent = scanner.nextLine(); + for ( Relocator relocator : relocators ) + { + if ( relocator.canRelocateClass( relContent ) ) + { + relContent = relocator.applyToSourceContent( relContent ); + } + } + serviceStream.append( relContent ); + serviceStream.append( NEWLINE ); + } + + if ( time > this.time ) + { + this.time = time; + } + } + + @Override + public boolean hasTransformedResource() + { + return serviceStream != null; + } + + @Override + public void modifyOutputStream( final JarOutputStream jos ) + throws IOException + { + JarEntry jarEntry = new JarEntry( SISU_INDEX_PATH ); + jarEntry.setTime( time ); + jos.putNextEntry( jarEntry ); + IOUtils.copy( serviceStream.toInputStream(), jos ); Review comment: this is fluke since last changes (not possible to end up with NPE) -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: [email protected]
