| package org.apache.maven.shared.jar.classes; |
| |
| /* |
| * 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.bcel.classfile.ClassFormatException; |
| import org.apache.bcel.classfile.ClassParser; |
| import org.apache.bcel.classfile.DescendingVisitor; |
| import org.apache.bcel.classfile.JavaClass; |
| import org.apache.bcel.classfile.LineNumberTable; |
| import org.apache.bcel.classfile.Method; |
| import org.apache.maven.shared.jar.JarAnalyzer; |
| import org.codehaus.plexus.logging.AbstractLogEnabled; |
| |
| import java.io.IOException; |
| import java.util.Iterator; |
| import java.util.List; |
| import java.util.jar.JarEntry; |
| |
| /** |
| * Analyze the classes in a JAR file. This class is thread safe and immutable as it retains no state. |
| * <p/> |
| * Note that you must first create an instance of {@link org.apache.maven.shared.jar.JarAnalyzer} - see its Javadoc for |
| * a typical use. |
| * |
| * @plexus.component role="org.apache.maven.shared.jar.classes.JarClassesAnalysis" role-hint="default" |
| * @see #analyze(org.apache.maven.shared.jar.JarAnalyzer) |
| */ |
| public class JarClassesAnalysis |
| extends AbstractLogEnabled |
| { |
| private static final double JAVA_1_8_CLASS_VERSION = 52.0; |
| |
| private static final double JAVA_1_7_CLASS_VERSION = 51.0; |
| |
| private static final double JAVA_1_6_CLASS_VERSION = 50.0; |
| |
| private static final double JAVA_1_5_CLASS_VERSION = 49.0; |
| |
| private static final double JAVA_1_4_CLASS_VERSION = 48.0; |
| |
| private static final double JAVA_1_3_CLASS_VERSION = 47.0; |
| |
| private static final double JAVA_1_2_CLASS_VERSION = 46.0; |
| |
| private static final double JAVA_1_1_CLASS_VERSION = 45.3; |
| |
| /** |
| * Analyze a JAR and find any classes and their details. Note that if the provided JAR analyzer has previously |
| * analyzed the JAR, the cached results will be returned. You must obtain a new JAR analyzer to the re-read the |
| * contents of the file. |
| * |
| * @param jarAnalyzer the JAR to analyze. This must not yet have been closed. |
| * @return the details of the classes found |
| */ |
| public JarClasses analyze( JarAnalyzer jarAnalyzer ) |
| { |
| JarClasses classes = jarAnalyzer.getJarData().getJarClasses(); |
| if ( classes == null ) |
| { |
| String jarfilename = jarAnalyzer.getFile().getAbsolutePath(); |
| classes = new JarClasses(); |
| |
| List classList = jarAnalyzer.getClassEntries(); |
| |
| classes.setDebugPresent( false ); |
| |
| double maxVersion = 0.0; |
| |
| Iterator it = classList.iterator(); |
| while ( it.hasNext() ) |
| { |
| JarEntry entry = (JarEntry) it.next(); |
| String classname = entry.getName(); |
| |
| try |
| { |
| ClassParser classParser = new ClassParser( jarfilename, classname ); |
| |
| JavaClass javaClass = classParser.parse(); |
| |
| String classSignature = javaClass.getClassName(); |
| |
| if ( !classes.isDebugPresent() ) |
| { |
| if ( hasDebugSymbols( javaClass ) ) |
| { |
| classes.setDebugPresent( true ); |
| } |
| } |
| |
| double classVersion = javaClass.getMajor(); |
| if ( javaClass.getMinor() > 0 ) |
| { |
| classVersion = classVersion + javaClass.getMinor() / 10.0; |
| } |
| |
| if ( classVersion > maxVersion ) |
| { |
| maxVersion = classVersion; |
| } |
| |
| Method[] methods = javaClass.getMethods(); |
| for ( int i = 0; i < methods.length; i++ ) |
| { |
| classes.addMethod( classSignature + "." + methods[i].getName() + methods[i].getSignature() ); |
| } |
| |
| String classPackageName = javaClass.getPackageName(); |
| |
| classes.addClassName( classSignature ); |
| classes.addPackage( classPackageName ); |
| |
| ImportVisitor importVisitor = new ImportVisitor( javaClass ); |
| DescendingVisitor descVisitor = new DescendingVisitor( javaClass, importVisitor ); |
| javaClass.accept( descVisitor ); |
| |
| classes.addImports( importVisitor.getImports() ); |
| } |
| catch ( ClassFormatException e ) |
| { |
| getLogger().warn( "Unable to process class " + classname + " in JarAnalyzer File " + jarfilename, |
| e ); |
| } |
| catch ( IOException e ) |
| { |
| getLogger().warn( "Unable to process JarAnalyzer File " + jarfilename, e ); |
| } |
| } |
| |
| if ( maxVersion == JAVA_1_8_CLASS_VERSION ) |
| { |
| classes.setJdkRevision( "1.8" ); |
| } |
| else if ( maxVersion == JAVA_1_7_CLASS_VERSION ) |
| { |
| classes.setJdkRevision( "1.7" ); |
| } |
| else if ( maxVersion == JAVA_1_6_CLASS_VERSION ) |
| { |
| classes.setJdkRevision( "1.6" ); |
| } |
| else if ( maxVersion == JAVA_1_5_CLASS_VERSION ) |
| { |
| classes.setJdkRevision( "1.5" ); |
| } |
| else if ( maxVersion == JAVA_1_4_CLASS_VERSION ) |
| { |
| classes.setJdkRevision( "1.4" ); |
| } |
| else if ( maxVersion == JAVA_1_3_CLASS_VERSION ) |
| { |
| classes.setJdkRevision( "1.3" ); |
| } |
| else if ( maxVersion == JAVA_1_2_CLASS_VERSION ) |
| { |
| classes.setJdkRevision( "1.2" ); |
| } |
| else if ( maxVersion == JAVA_1_1_CLASS_VERSION ) |
| { |
| classes.setJdkRevision( "1.1" ); |
| } |
| |
| jarAnalyzer.getJarData().setJarClasses( classes ); |
| } |
| return classes; |
| } |
| |
| private boolean hasDebugSymbols( JavaClass javaClass ) |
| { |
| boolean ret = false; |
| Method[] methods = javaClass.getMethods(); |
| for ( int i = 0; i < methods.length; i++ ) |
| { |
| LineNumberTable linenumbers = methods[i].getLineNumberTable(); |
| if ( linenumbers != null && linenumbers.getLength() > 0 ) |
| { |
| ret = true; |
| break; |
| } |
| } |
| return ret; |
| } |
| } |