| package org.apache.maven.shared.jar.identification.hash; |
| |
| /* |
| * 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 org.apache.maven.shared.jar.JarAnalyzer; |
| import org.apache.maven.shared.jar.JarData; |
| import org.codehaus.plexus.component.annotations.Component; |
| import org.codehaus.plexus.component.annotations.Requirement; |
| import org.codehaus.plexus.digest.Digester; |
| import org.codehaus.plexus.digest.DigesterException; |
| import org.codehaus.plexus.logging.AbstractLogEnabled; |
| |
| /** |
| * Analyzer that calculates the hash code for the entire file. Can be used to detect an exact copy of the file. |
| * <p/> |
| * If you are not using Plexus, you must call {@link #setDigester(org.codehaus.plexus.digest.Digester)} before use |
| */ |
| @Component( role = JarHashAnalyzer.class, hint = "file" ) |
| public class JarFileHashAnalyzer |
| extends AbstractLogEnabled |
| implements JarHashAnalyzer |
| { |
| /** |
| * The digester to use for computing the hash. Under Plexus, the default is SHA-1. |
| */ |
| @Requirement( hint = "sha1" ) |
| private Digester digester; |
| |
| public String computeHash( JarAnalyzer jarAnalyzer ) |
| { |
| JarData jarData = jarAnalyzer.getJarData(); |
| |
| String result = jarData.getFileHash(); |
| if ( result == null ) |
| { |
| try |
| { |
| result = digester.calc( jarData.getFile() ); |
| jarData.setFileHash( result ); |
| } |
| catch ( DigesterException e ) |
| { |
| getLogger().warn( "Unable to calculate the hashcode.", e ); |
| } |
| } |
| return result; |
| } |
| |
| public void setDigester( Digester digester ) |
| { |
| this.digester = digester; |
| } |
| } |