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Diffstat (limited to 'src/proguard/ProGuard.java')
| -rw-r--r-- | src/proguard/ProGuard.java | 527 |
1 files changed, 0 insertions, 527 deletions
diff --git a/src/proguard/ProGuard.java b/src/proguard/ProGuard.java deleted file mode 100644 index b35921c..0000000 --- a/src/proguard/ProGuard.java +++ /dev/null @@ -1,527 +0,0 @@ -/* - * ProGuard -- shrinking, optimization, obfuscation, and preverification - * of Java bytecode. - * - * Copyright (c) 2002-2014 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; - -import proguard.classfile.*; -import proguard.classfile.attribute.visitor.AllAttributeVisitor; -import proguard.classfile.editor.*; -import proguard.classfile.visitor.*; -import proguard.obfuscate.Obfuscator; -import proguard.optimize.Optimizer; -import proguard.preverify.*; -import proguard.shrink.Shrinker; - -import java.io.*; - -/** - * Tool for shrinking, optimizing, obfuscating, and preverifying Java classes. - * - * @author Eric Lafortune - */ -public class ProGuard -{ - public static final String VERSION = "ProGuard, version 5.1"; - - private final Configuration configuration; - private ClassPool programClassPool = new ClassPool(); - private final ClassPool libraryClassPool = new ClassPool(); - - - /** - * Creates a new ProGuard object to process jars as specified by the given - * configuration. - */ - public ProGuard(Configuration configuration) - { - this.configuration = configuration; - } - - - /** - * Performs all subsequent ProGuard operations. - */ - public void execute() throws IOException - { - System.out.println(VERSION); - - GPL.check(); - - if (configuration.printConfiguration != null) - { - printConfiguration(); - } - - new ConfigurationChecker(configuration).check(); - - if (configuration.programJars != null && - configuration.programJars.hasOutput() && - new UpToDateChecker(configuration).check()) - { - return; - } - - readInput(); - - if (configuration.shrink || - configuration.optimize || - configuration.obfuscate || - configuration.preverify) - { - clearPreverification(); - } - - if (configuration.printSeeds != null || - configuration.shrink || - configuration.optimize || - configuration.obfuscate || - configuration.preverify) - { - initialize(); - } - - if (configuration.targetClassVersion != 0) - { - target(); - } - - if (configuration.printSeeds != null) - { - printSeeds(); - } - - if (configuration.shrink) - { - shrink(); - } - - if (configuration.preverify) - { - inlineSubroutines(); - } - - if (configuration.optimize) - { - for (int optimizationPass = 0; - optimizationPass < configuration.optimizationPasses; - optimizationPass++) - { - if (!optimize()) - { - // Stop optimizing if the code doesn't improve any further. - break; - } - - // Shrink again, if we may. - if (configuration.shrink) - { - // Don't print any usage this time around. - configuration.printUsage = null; - configuration.whyAreYouKeeping = null; - - shrink(); - } - } - } - - if (configuration.obfuscate) - { - obfuscate(); - } - - if (configuration.preverify) - { - preverify(); - } - - if (configuration.shrink || - configuration.optimize || - configuration.obfuscate || - configuration.preverify) - { - sortClassElements(); - } - - if (configuration.programJars.hasOutput()) - { - writeOutput(); - } - - if (configuration.dump != null) - { - dump(); - } - } - - - /** - * Prints out the configuration that ProGuard is using. - */ - private void printConfiguration() throws IOException - { - if (configuration.verbose) - { - System.out.println("Printing configuration to [" + fileName(configuration.printConfiguration) + "]..."); - } - - PrintStream ps = createPrintStream(configuration.printConfiguration); - try - { - new ConfigurationWriter(ps).write(configuration); - } - finally - { - closePrintStream(ps); - } - } - - - /** - * Reads the input class files. - */ - private void readInput() throws IOException - { - if (configuration.verbose) - { - System.out.println("Reading input..."); - } - - // Fill the program class pool and the library class pool. - new InputReader(configuration).execute(programClassPool, libraryClassPool); - } - - - /** - * Initializes the cross-references between all classes, performs some - * basic checks, and shrinks the library class pool. - */ - private void initialize() throws IOException - { - if (configuration.verbose) - { - System.out.println("Initializing..."); - } - - new Initializer(configuration).execute(programClassPool, libraryClassPool); - } - - - /** - * Sets that target versions of the program classes. - */ - private void target() throws IOException - { - if (configuration.verbose) - { - System.out.println("Setting target versions..."); - } - - new Targeter(configuration).execute(programClassPool); - } - - - /** - * Prints out classes and class members that are used as seeds in the - * shrinking and obfuscation steps. - */ - private void printSeeds() throws IOException - { - if (configuration.verbose) - { - System.out.println("Printing kept classes, fields, and methods..."); - } - - PrintStream ps = createPrintStream(configuration.printSeeds); - try - { - new SeedPrinter(ps).write(configuration, programClassPool, libraryClassPool); - } - finally - { - closePrintStream(ps); - } - } - - - /** - * Performs the shrinking step. - */ - private void shrink() throws IOException - { - if (configuration.verbose) - { - System.out.println("Shrinking..."); - - // We'll print out some explanation, if requested. - if (configuration.whyAreYouKeeping != null) - { - System.out.println("Explaining why classes and class members are being kept..."); - } - - // We'll print out the usage, if requested. - if (configuration.printUsage != null) - { - System.out.println("Printing usage to [" + fileName(configuration.printUsage) + "]..."); - } - } - - // Perform the actual shrinking. - programClassPool = - new Shrinker(configuration).execute(programClassPool, libraryClassPool); - } - - - /** - * Performs the subroutine inlining step. - */ - private void inlineSubroutines() - { - if (configuration.verbose) - { - System.out.println("Inlining subroutines..."); - } - - // Perform the actual inlining. - new SubroutineInliner(configuration).execute(programClassPool); - } - - - /** - * Performs the optimization step. - */ - private boolean optimize() throws IOException - { - if (configuration.verbose) - { - System.out.println("Optimizing..."); - } - - // Perform the actual optimization. - return new Optimizer(configuration).execute(programClassPool, libraryClassPool); - } - - - /** - * Performs the obfuscation step. - */ - private void obfuscate() throws IOException - { - if (configuration.verbose) - { - System.out.println("Obfuscating..."); - - // We'll apply a mapping, if requested. - if (configuration.applyMapping != null) - { - System.out.println("Applying mapping [" + fileName(configuration.applyMapping) + "]"); - } - - // We'll print out the mapping, if requested. - if (configuration.printMapping != null) - { - System.out.println("Printing mapping to [" + fileName(configuration.printMapping) + "]..."); - } - } - - // Perform the actual obfuscation. - new Obfuscator(configuration).execute(programClassPool, libraryClassPool); - } - - - /** - * Clears any JSE preverification information from the program classes. - */ - private void clearPreverification() - { - programClassPool.classesAccept( - new ClassVersionFilter(ClassConstants.CLASS_VERSION_1_6, - new AllMethodVisitor( - new AllAttributeVisitor( - new NamedAttributeDeleter(ClassConstants.ATTR_StackMapTable))))); - } - - - /** - * Performs the preverification step. - */ - private void preverify() - { - if (configuration.verbose) - { - System.out.println("Preverifying..."); - } - - // Perform the actual preverification. - new Preverifier(configuration).execute(programClassPool); - } - - - /** - * Sorts the elements of all program classes. - */ - private void sortClassElements() - { - programClassPool.classesAccept(new ClassElementSorter()); - } - - - /** - * Writes the output class files. - */ - private void writeOutput() throws IOException - { - if (configuration.verbose) - { - System.out.println("Writing output..."); - } - - // Write out the program class pool. - new OutputWriter(configuration).execute(programClassPool); - } - - - /** - * Prints out the contents of the program classes. - */ - private void dump() throws IOException - { - if (configuration.verbose) - { - System.out.println("Printing classes to [" + fileName(configuration.dump) + "]..."); - } - - PrintStream ps = createPrintStream(configuration.dump); - try - { - programClassPool.classesAccept(new ClassPrinter(ps)); - } - finally - { - closePrintStream(ps); - } - } - - - /** - * Returns a print stream for the given file, or the standard output if - * the file name is empty. - */ - private PrintStream createPrintStream(File file) - throws FileNotFoundException - { - return file == Configuration.STD_OUT ? System.out : - new PrintStream( - new BufferedOutputStream( - new FileOutputStream(file))); - } - - - /** - * Closes the given print stream, or closes it if is the standard output. - * @param printStream - */ - private void closePrintStream(PrintStream printStream) - { - if (printStream == System.out) - { - printStream.flush(); - } - else - { - printStream.close(); - } - } - - - /** - * Returns the canonical file name for the given file, or "standard output" - * if the file name is empty. - */ - private String fileName(File file) - { - if (file == Configuration.STD_OUT) - { - return "standard output"; - } - else - { - try - { - return file.getCanonicalPath(); - } - catch (IOException ex) - { - return file.getPath(); - } - } - } - - - /** - * The main method for ProGuard. - */ - public static void main(String[] args) - { - if (args.length == 0) - { - System.out.println(VERSION); - System.out.println("Usage: java proguard.ProGuard [options ...]"); - System.exit(1); - } - - // Create the default options. - Configuration configuration = new Configuration(); - - try - { - // Parse the options specified in the command line arguments. - ConfigurationParser parser = new ConfigurationParser(args, - System.getProperties()); - try - { - parser.parse(configuration); - } - finally - { - parser.close(); - } - - // Execute ProGuard with these options. - new ProGuard(configuration).execute(); - } - catch (Exception ex) - { - if (configuration.verbose) - { - // Print a verbose stack trace. - ex.printStackTrace(); - } - else - { - // Print just the stack trace message. - System.err.println("Error: "+ex.getMessage()); - } - - System.exit(1); - } - - System.exit(0); - } -} |