/* $Id: ClassFileReader.java,v 1.6.2.1 2006/01/16 22:57:55 eric Exp $ * * ProGuard -- shrinking, optimization, and obfuscation of Java class files. * * Copyright (c) 2002-2006 Eric Lafortune (eric@graphics.cornell.edu) * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the Free * Software Foundation; either version 2 of the License, or (at your option) * any later version. * * This program is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for * more details. * * You should have received a copy of the GNU General Public License along * with this program; if not, write to the Free Software Foundation, Inc., * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */package proguard.io;import proguard.classfile.*;import proguard.classfile.util.ClassUtil;import proguard.classfile.visitor.*;import java.io.*;/** * This DataEntryReader applies a given ClassFileVisitor to the class file * definitions that it reads. * <p> * Class files are read as ProgramClassFile objects or LibraryClassFile objects, * depending on the <code>isLibrary</code> flag. * <p> * In case of libraries, only public class files are considered, if the * <code>skipNonPublicLibraryClasses</code> flag is set. * * @author Eric Lafortune */public class ClassFileReader implements DataEntryReader{    private boolean          isLibrary;    private boolean          skipNonPublicLibraryClasses;    private boolean          skipNonPublicLibraryClassMembers;    private boolean          note;    private ClassFileVisitor classFileVisitor;    /**     * Creates a new DataEntryClassFileFilter for reading the specified     * ClassFile objects.     */    public ClassFileReader(boolean          isLibrary,                           boolean          skipNonPublicLibraryClasses,                           boolean          skipNonPublicLibraryClassMembers,                           boolean          note,                           ClassFileVisitor classFileVisitor)    {        this.isLibrary                        = isLibrary;        this.skipNonPublicLibraryClasses      = skipNonPublicLibraryClasses;        this.skipNonPublicLibraryClassMembers = skipNonPublicLibraryClassMembers;        this.note                             = note;        this.classFileVisitor                 = classFileVisitor;    }    // Implementations for DataEntryReader.    public void read(DataEntry dataEntry) throws IOException    {        try        {            // Get the input stream.            InputStream inputStream = dataEntry.getInputStream();            // Wrap it into a data input stream.            DataInputStream dataInputStream = new DataInputStream(inputStream);            // Create a ClassFile representation.            ClassFile classFile = isLibrary ?                (ClassFile)LibraryClassFile.create(dataInputStream, skipNonPublicLibraryClasses, skipNonPublicLibraryClassMembers) :                (ClassFile)ProgramClassFile.create(dataInputStream);            // Apply the visitor.            if (classFile != null)            {                if (note &&                    !dataEntry.getName().equals(classFile.getName()+ClassConstants.CLASS_FILE_EXTENSION))                {                    System.err.println("Note: class file [" + dataEntry.getName() + "] unexpectedly contains class [" + ClassUtil.externalClassName(classFile.getName()) + "]");                }                classFile.accept(classFileVisitor);            }            dataEntry.closeInputStream();        }        catch (Exception ex)        {            throw new IOException("Can't process class file ["+dataEntry.getName()+"] ("+ex.getMessage()+")");        }    }}