Example usage for org.objectweb.asm.tree ClassNode ClassNode

Introduction

In this page you can find the example usage for org.objectweb.asm.tree ClassNode ClassNode.

Prototype

public ClassNode() 

Source Link

Document

Constructs a new ClassNode .

Usage

From source file:com.heliosdecompiler.helios.LoadedFile.java

License:Apache License

public ClassNode getClassNode(String name) {
    if (!this.isPath) {
        return this.classes.get(name);
    } else {//from   w  ww.j  ava2 s.  c om
        if (!this.classes.containsKey(name)) {
            try {
                ClassReader classReader = new ClassReader(new ByteArrayInputStream(files.get(name)));
                ClassNode classNode = new ClassNode();
                classReader.accept(classNode, ClassReader.SKIP_FRAMES | ClassReader.SKIP_DEBUG);

                // Store by ClassNode name
                classes.put(classNode.name, classNode);
                // Also store by path
                classes.put(name, classNode);
            } catch (Exception ignored) { //Malformed class
            }
        }
        return this.classes.get(name);
    }
}

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From source file:com.insightfullogic.stripper.Runner.java

License:Open Source License

static void rewrite(final String classFile, final ClassRules rules) {
    try {/*from w w w .  j a v a2s . c  om*/
        // Read
        final ClassReader cr = new ClassReader(classFile);
        final ClassNode cls = new ClassNode();
        cr.accept(cls, 0);

        rules.strip(cls);

        // Write
        final ClassWriter cw = new ClassWriter(0);
        cls.accept(cw);
        try (FileOutputStream out = new FileOutputStream(classFile)) {
            out.write(cw.toByteArray());
        }
    } catch (final IOException e) {
        throw new IllegalStateException(e);
    }
}

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From source file:com.insightfullogic.stripper.TestClassRules.java

License:Open Source License

@Test
public void factoryLoadsAndRuns() throws IOException {
    final ClassNode example = new ClassNode();
    final ClassReader cr = new ClassReader("com.insightfullogic.stripper.ExampleClass");
    cr.accept(example, 0);//from   w ww. j a  v  a2s .  c o m

    final ClassRules rules = ClassRules.compileFrom("src/test/resources/example-rules.py");
    assertEquals(3, rules.predicates.size());

    final MethodNameRegex name = (MethodNameRegex) rules.predicates.get(0);
    assertEquals("toString", name.regex.pattern());

    final ReturnTypeName ret = (ReturnTypeName) rules.predicates.get(1);
    assertEquals("I", ret.typeName);

    final ArgumentTypeName arg = (ArgumentTypeName) rules.predicates.get(2);
    assertEquals("I", arg.typeName);
    assertEquals(0, arg.argNumber);

    rules.strip(example);

    assertEquals(2, example.methods.size());
    final MethodNode meth = (MethodNode) example.methods.get(1);
    assertEquals("takeIntFalsePositive", meth.name);
}

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From source file:com.jcwhatever.nucleus.localizer.LanguageGenerator.java

License:MIT License

private List<LiteralInfo> getStringLiterals(File file) throws IOException {

    System.out.println("Opening jar file: " + file.getAbsolutePath());

    JarFile jarFile = new JarFile(file);
    Enumeration<JarEntry> entries = jarFile.entries();
    List<LiteralInfo> results = new ArrayList<>(50);

    Deque<ClassNode> parseQueue = new ArrayDeque<>(10);
    Map<String, AnnotationInfo> annotations = new HashMap<>(10);

    while (entries.hasMoreElements()) {
        JarEntry entry = entries.nextElement();

        if (entry.isDirectory() || !entry.getName().endsWith(".class"))
            continue;

        InputStream stream = jarFile.getInputStream(entry);
        ClassReader reader = new ClassReader(stream);

        ClassNode classNode = new ClassNode();
        reader.accept(classNode, 0);//from  www.  java  2  s  . c  o  m

        // check if class is an annotation
        if (!classNode.interfaces.isEmpty()
                && classNode.interfaces.contains("java/lang/annotation/Annotation")) {

            // get annotation first so they can be applied in classes
            AnnotationInfo info = parseAnnotation(classNode);
            if (info == null)
                continue;

            annotations.put(info.className, info);
        } else {
            // set aside non-annotation classes for now
            parseQueue.addLast(classNode);
        }

        stream.close();
    }

    // parse classes
    while (!parseQueue.isEmpty()) {
        ClassNode node = parseQueue.removeFirst();
        results.addAll(parseClass(node, annotations));
    }

    jarFile.close();

    return results;
}

---

From source file:com.khubla.simpleioc.classlibrary.ClassLibrary.java

License:Open Source License

/**
 * find all the classes in a jar file// w  ww  .ja va  2  s.c  o m
 */
private List<Class<?>> crackJar(String jarfile) throws Exception {
    try {
        /*
         * the ret
         */
        final List<Class<?>> ret = new ArrayList<Class<?>>();
        /*
         * the jar
         */
        final FileInputStream fis = new FileInputStream(jarfile);
        final ZipInputStream zip_inputstream = new ZipInputStream(fis);
        ZipEntry current_zip_entry = null;
        while ((current_zip_entry = zip_inputstream.getNextEntry()) != null) {
            if (current_zip_entry.getName().endsWith(".class")) {
                if (current_zip_entry.getSize() > 0) {
                    final ClassNode classNode = new ClassNode();
                    final ClassReader cr = new ClassReader(zip_inputstream);
                    cr.accept(classNode, 0);
                    if (annotated(classNode)) {
                        ret.add(Class.forName(classNode.name.replaceAll("/", ".")));
                        log.debug("Found " + classNode.name + " in " + jarfile);
                    }
                }
            }
        }
        zip_inputstream.close();
        fis.close();
        return ret;
    } catch (final Throwable e) {
        throw new Exception("Exception in crackJar for jar '" + jarfile + "'", e);
    }
}

---

From source file:com.khubla.simpleioc.classlibrary.ClassLibrary.java

License:Open Source License

/**
 * scan a given directory/*  www . j  a  v  a 2 s.c  o  m*/
 */
private List<Class<?>> scan(File file, String concatenatedName) throws Exception {
    try {
        log.debug("scanning directory'" + file.getAbsolutePath() + "'");
        /*
         * collection of all classes
         */
        final List<Class<?>> ret = new ArrayList<Class<?>>();
        if (file.isDirectory()) {
            final File[] files = file.listFiles();
            if (null != files) {
                for (final File f : files) {
                    if (false == f.isHidden()) {
                        if (f.isDirectory()) {
                            ret.addAll(scan(f, concatenatedName + f.getName() + "."));
                        } else {
                            ret.addAll(scan(f, concatenatedName + f.getName()));
                        }
                    }
                }
            }
        } else {
            /*
             * its a file, could be a class file or a jar file, or neither
             */
            if (file.getName().endsWith(CLASS)) {
                final ClassNode classNode = new ClassNode();
                final ClassReader cr = new ClassReader(new FileInputStream(file.getAbsolutePath()));
                cr.accept(classNode, 0);
                if (annotated(classNode)) {
                    ret.add(Class.forName(classNode.name.replaceAll("/", ".")));
                    log.debug("adding " + classNode.name + " from " + file.getAbsolutePath());
                }
            } else if (file.getName().endsWith(JAR)) {
                ret.addAll(crackJar(file.getAbsolutePath()));
            }
        }
        /*
         * done
         */
        return ret;
    } catch (final Exception e) {
        throw new Exception("Exception in scan", e);
    }
}

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From source file:com.licel.jcardsim.utils.JavaCardApiProcessor.java

License:Apache License

public static void proxyClass(File buildDir, String proxyClassFile, String targetClassFile,
        boolean skipConstructor) throws IOException {
    File proxyFile = new File(buildDir, proxyClassFile.replace(".", File.separator) + ".class");
    FileInputStream fProxyClass = new FileInputStream(proxyFile);
    FileInputStream fTargetClass = new FileInputStream(
            new File(buildDir, targetClassFile.replace(".", File.separator) + ".class"));
    ClassReader crProxy = new ClassReader(fProxyClass);
    ClassNode cnProxy = new ClassNode();
    crProxy.accept(cnProxy, 0);//w w  w . ja  va 2  s . c o m
    ClassReader crTarget = new ClassReader(fTargetClass);
    ClassNode cnTarget = new ClassNode();
    crTarget.accept(cnTarget, 0);

    ClassNode cnProxyRemapped = new ClassNode();
    HashMap<String, String> map = new HashMap();
    map.put(cnProxy.name, cnTarget.name);
    // inner classes
    for (int i = 0; i < 10; i++) {
        map.put(cnProxy.name + "$1", cnTarget.name + "$1");
    }
    RemappingClassAdapter ra = new RemappingClassAdapter(cnProxyRemapped, new SimpleRemapper(map));
    cnProxy.accept(ra);

    ClassWriter cw = new ClassWriter(crTarget, 0);
    MergeAdapter ma = new MergeAdapter(cw, cnProxyRemapped, skipConstructor);
    cnTarget.accept(ma);
    fProxyClass.close();
    fTargetClass.close();
    FileOutputStream fos = new FileOutputStream(
            new File(buildDir, targetClassFile.replace(".", File.separator) + ".class"));
    fos.write(cw.toByteArray());
    fos.close();
    // remove proxy class
    proxyFile.delete();
}

---

From source file:com.licel.jcardsim.utils.JavaCardApiProcessor.java

License:Apache License

public static void copyClass(File buildDir, String proxyClassFile, String targetClassName, Map map)
        throws IOException {
    File sourceFile = new File(buildDir, proxyClassFile.replace(".", File.separator) + ".class");
    FileInputStream fProxyClass = new FileInputStream(sourceFile);
    ClassReader crProxy = new ClassReader(fProxyClass);
    ClassNode cnProxy = new ClassNode();
    crProxy.accept(cnProxy, 0);//  w  w w .  jav  a  2 s .  c  o m

    ClassWriter cw = new ClassWriter(0);
    map.put(cnProxy.name, targetClassName.replace(".", "/"));
    RemappingClassAdapter ra = new RemappingClassAdapter(cw, new SimpleRemapper(map));
    cnProxy.accept(ra);

    fProxyClass.close();
    FileOutputStream fos = new FileOutputStream(
            new File(buildDir, targetClassName.replace(".", File.separator) + ".class"));
    fos.write(cw.toByteArray());
    fos.close();

    // remove source class
    sourceFile.delete();
}

---

From source file:com.licel.jcardsim.utils.JavaCardApiProcessor.java

License:Apache License

public static void proxyExceptionClass(File buildDir, String targetClassName) throws IOException {
    FileInputStream fTargetClass = new FileInputStream(
            new File(buildDir, targetClassName.replace(".", File.separator) + ".class"));
    ClassReader crTarget = new ClassReader(fTargetClass);
    ClassNode cnTarget = new ClassNode();
    crTarget.accept(cnTarget, 0);//ww  w  .j av a  2  s  . c o  m
    ClassWriter cw = new ClassWriter(0);
    ExceptionClassProxy ecc = new ExceptionClassProxy(cw, cnTarget.version, cnTarget.name, cnTarget.superName);
    cnTarget.accept(ecc);

    fTargetClass.close();
    FileOutputStream fos = new FileOutputStream(
            new File(buildDir, targetClassName.replace(".", File.separator) + ".class"));
    fos.write(cw.toByteArray());
    fos.close();

}

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From source file:com.liferay.portal.nio.intraband.proxy.IntrabandProxyUtilTest.java

License:Open Source License

private ClassNode _loadClass(InputStream is) {
    ClassReader classReader = null;/*from w  w w. j  a v a 2  s .  c  o m*/

    try {
        classReader = new ClassReader(is);
    } catch (IOException ioe) {
        throw new RuntimeException(ioe);
    }

    ClassNode classNode = new ClassNode();

    classReader.accept(classNode, 0);

    return classNode;
}

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