| package org.apache.maven.shared.jar.identification.exposers; |
| |
| /* |
| * 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 javax.inject.Named; |
| import javax.inject.Singleton; |
| |
| import org.apache.maven.shared.jar.JarAnalyzer; |
| import org.apache.maven.shared.jar.identification.JarIdentification; |
| import org.apache.maven.shared.jar.identification.JarIdentificationExposer; |
| import org.codehaus.plexus.util.StringUtils; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import java.io.BufferedReader; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.InputStreamReader; |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.jar.JarEntry; |
| |
| |
| /** |
| * Exposer that examines a a JAR for files that contain the text <code>version</code> (case-insensitive) and |
| * adds the contents as potential version(s). |
| */ |
| @Singleton |
| @Named( "textFile" ) |
| public class TextFileExposer |
| implements JarIdentificationExposer |
| { |
| private final Logger logger = LoggerFactory.getLogger( getClass() ); |
| |
| @Override |
| public void expose( JarIdentification identification, JarAnalyzer jarAnalyzer ) |
| { |
| List<String> textFiles = findTextFileVersions( jarAnalyzer ); |
| for ( String ver : textFiles ) |
| { |
| identification.addVersion( ver ); |
| } |
| } |
| |
| private List<String> findTextFileVersions( JarAnalyzer jarAnalyzer ) |
| { |
| List<String> textVersions = new ArrayList<>(); |
| List<JarEntry> hits = jarAnalyzer.getVersionEntries(); |
| |
| for ( JarEntry entry : hits ) |
| { |
| // skip this entry if it's a class file. |
| if ( !entry.getName().endsWith( ".class" ) ) //$NON-NLS-1$ |
| { |
| logger.debug( "Version Hit: " + entry.getName() ); |
| try ( InputStream is = jarAnalyzer.getEntryInputStream( entry ) ) |
| { |
| BufferedReader br = new BufferedReader( new InputStreamReader( is ) ); |
| |
| String line = br.readLine(); |
| // TODO: check for key=value pair. |
| // TODO: maybe even for groupId entries. |
| |
| logger.debug( line ); |
| if ( StringUtils.isNotEmpty( line ) ) |
| { |
| textVersions.add( line ); |
| } |
| } |
| catch ( IOException e ) |
| { |
| logger.warn( "Unable to read line from " + entry.getName(), e ); |
| } |
| } |
| } |
| return textVersions; |
| } |
| } |