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/*
 * ProGuard -- shrinking, optimization, obfuscation, and preverification
 *             of Java bytecode.
 *
 * Copyright (c) 2002-2018 GuardSquare NV
 *
 * 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.io.*;
import proguard.classfile.util.*;
import proguard.classfile.visitor.ClassVisitor;

import java.io.*;

/**
 * This DataEntryReader applies a given ClassVisitor to the class
 * definitions that it reads.
 * 

* Class files are read as ProgramClass objects or LibraryClass objects, * depending on the isLibrary flag. *

* In case of libraries, only public classes are considered, if the * skipNonPublicLibraryClasses flag is set. * * @author Eric Lafortune */ public class ClassReader implements DataEntryReader { private final boolean isLibrary; private final boolean skipNonPublicLibraryClasses; private final boolean skipNonPublicLibraryClassMembers; private final WarningPrinter warningPrinter; private final ClassVisitor classVisitor; /** * Creates a new DataEntryClassFilter for reading the specified * Clazz objects. */ public ClassReader(boolean isLibrary, boolean skipNonPublicLibraryClasses, boolean skipNonPublicLibraryClassMembers, WarningPrinter warningPrinter, ClassVisitor classVisitor) { this.isLibrary = isLibrary; this.skipNonPublicLibraryClasses = skipNonPublicLibraryClasses; this.skipNonPublicLibraryClassMembers = skipNonPublicLibraryClassMembers; this.warningPrinter = warningPrinter; this.classVisitor = classVisitor; } // 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 Clazz representation. Clazz clazz; if (isLibrary) { clazz = new LibraryClass(); clazz.accept(new LibraryClassReader(dataInputStream, skipNonPublicLibraryClasses, skipNonPublicLibraryClassMembers)); } else { clazz = new ProgramClass(); clazz.accept(new ProgramClassReader(dataInputStream)); } // Apply the visitor, if we have a real class. String className = clazz.getName(); if (className != null) { String dataEntryName = dataEntry.getName(); if (!dataEntryName.equals("module-info.class") && !dataEntryName.replace(File.pathSeparatorChar, ClassConstants.PACKAGE_SEPARATOR).equals(className + ClassConstants.CLASS_FILE_EXTENSION) && warningPrinter != null) { warningPrinter.print(className, "Warning: class [" + dataEntry.getName() + "] unexpectedly contains class [" + ClassUtil.externalClassName(className) + "]"); } clazz.accept(classVisitor); } dataEntry.closeInputStream(); } catch (Exception ex) { throw (IOException)new IOException("Can't process class ["+dataEntry.getName()+"] ("+ex.getMessage()+")").initCause(ex); } } }





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