001    /**
002     * www.jcoverage.com
003     * Copyright (C)2003 jcoverage ltd.
004     *
005     * This file is part of jcoverage.
006     *
007     * jcoverage is free software; you can redistribute it and/or modify
008     * it under the terms of the GNU General Public License as published
009     * by the Free Software Foundation; either version 2 of the License,
010     * or (at your option) any later version.
011     *
012     * jcoverage is distributed in the hope that it will be useful, but
013     * WITHOUT ANY WARRANTY; without even the implied warranty of
014     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
015     * General Public License for more details.
016     *
017     * You should have received a copy of the GNU General Public License
018     * along with jcoverage; if not, write to the Free Software
019     * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
020     * USA
021     *
022     */
023    package com.jcoverage.util;
024    
025    import java.io.FileWriter;
026    import java.io.InputStream;
027    import java.io.IOException;
028    import java.io.PrintWriter;
029    
030    import org.apache.bcel.Repository;
031    
032    import org.apache.bcel.classfile.JavaClass;
033    
034    import org.apache.bcel.verifier.VerificationResult;
035    import org.apache.bcel.verifier.Verifier;
036    import org.apache.bcel.verifier.VerifierFactory;
037    
038    import org.apache.log4j.Logger;
039    
040    public class JavaClassHelper {
041      static Logger logger=Logger.getLogger(JavaClassHelper.class);
042    
043      public static JavaClass newJavaClass(InputStream clazz,String name) throws IOException {
044        return ClassParserHelper.newClassParser(clazz,name).parse();
045      }
046    
047      public static JavaClass newJavaClass(Class cl) throws IOException {
048        return ClassParserHelper.newClassParser(cl).parse();
049      }
050    
051      public static void dump(JavaClass javaClass) throws IOException {
052        FileWriter fw=null;
053        try {
054          logger.debug("dumping: "+javaClass.getClassName()+" to: "+ClassHelper.getBaseName(javaClass.getClassName())+".code");
055    
056          fw=new FileWriter(ClassHelper.getBaseName(javaClass.getClassName())+".code");
057          PrintWriter pw=new PrintWriter(fw);
058    
059          pw.println(javaClass);
060          pw.println(javaClass.getConstantPool());
061          for(int i=0;i<javaClass.getMethods().length;i++) {
062            pw.println(javaClass.getMethods()[i]);
063            if(javaClass.getMethods()[i].getCode()!=null) {
064              pw.println(javaClass.getMethods()[i].getCode().toString(true));
065            }
066          }
067    
068          pw.close();
069        } finally {
070          if(fw!=null) {
071            try {
072              fw.close();
073            } catch(IOException ex) {
074              if(logger.isDebugEnabled()) {
075                logger.debug(ex);
076              }
077            }
078            fw=null;
079          }
080        }
081      }
082    }