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ASM: a very small and fast Java bytecode manipulation framework Copyright (c) 2000-2007 INRIA, France Telecom All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. 3. Neither the name of the copyright holders nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 package org.objectweb.asm.optimizer;
 
 import java.io.File;
 import java.util.Map;
 import java.util.Set;
 
A Jar file optimizer.

Author(s):
Eric Bruneton
 
 public class JarOptimizer {
 
     static final Set APInew HashSet();
     static final Map HIERARCHY = new HashMap();
 
     public static void main(final String[] argsthrows IOException {
         File f = new File(args[0]);
         InputStream is = new GZIPInputStream(new FileInputStream(f));
         BufferedReader lnr = new LineNumberReader(new InputStreamReader(is));
         while (true) {
             String line = lnr.readLine();
             if (line != null) {
                 if (line.startsWith("class")) {
                     String c = line.substring(6, line.lastIndexOf(' '));
                     String sc = line.substring(line.lastIndexOf(' ') + 1);
                     .put(csc);
                 } else {
                     .add(line);
                 }
             } else {
                 break;
             }
         }
         optimize(new File(args[1]));
     }
 
     static void optimize(final File fthrows IOException {
         if (f.isDirectory()) {
             File[] files = f.listFiles();
             for (int i = 0; i < files.length; ++i) {
                 optimize(files[i]);
             }
         } else if (f.getName().endsWith(".jar")) {
             File g = new File(f.getParentFile(), f.getName() + ".new");
             ZipFile zf = new ZipFile(f);
             ZipOutputStream out = new ZipOutputStream(new FileOutputStream(g));
             Enumeration e = zf.entries();
             byte[] buf = new byte[10000];
             while (e.hasMoreElements()) {
                 ZipEntry ze = (ZipEntrye.nextElement();
                if (ze.isDirectory()) {
                    continue;
                }
                out.putNextEntry(ze);
                if (ze.getName().endsWith(".class")) {
                    ClassReader cr = new ClassReader(zf.getInputStream(ze));
                    // cr.accept(new ClassDump(), 0);
                    cr.accept(new ClassVerifier(), 0);
                }
                InputStream is = zf.getInputStream(ze);
                int n;
                do {
                    n = is.read(buf, 0, buf.length);
                    if (n != -1) {
                        out.write(buf, 0, n);
                    }
                } while (n != -1);
                out.closeEntry();
            }
            out.close();
            zf.close();
            f.delete();
            g.renameTo(f);
        }
    }
    static class ClassDump extends EmptyVisitor {
        String owner;
        public void visit(
            final int version,
            final int access,
            final String name,
            final String signature,
            final String superName,
            final String[] interfaces)
        {
             = name;
            if (.startsWith("java/")) {
                ..println("class " + name + ' ' + superName);
            }
        }
        public FieldVisitor visitField(
            final int access,
            final String name,
            final String desc,
            final String signature,
            final Object value)
        {
            if (.startsWith("java/")) {
                ..println( + ' ' + name);
            }
            return null;
        }
        public MethodVisitor visitMethod(
            final int access,
            final String name,
            final String desc,
            final String signature,
            final String[] exceptions)
        {
            if (.startsWith("java/")) {
                ..println( + ' ' + name + desc);
            }
            return null;
        }
    }
    static class ClassVerifier extends EmptyVisitor {
        String owner;
        String method;
        public void visit(
            final int version,
            final int access,
            final String name,
            final String signature,
            final String superName,
            final String[] interfaces)
        {
             = name;
        }
        public MethodVisitor visitMethod(
            final int access,
            final String name,
            final String desc,
            final String signature,
            final String[] exceptions)
        {
             = name + desc;
            return this;
        }
        public void visitFieldInsn(
            final int opcode,
            final String owner,
            final String name,
            final String desc)
        {
            check(ownername);
        }
        public void visitMethodInsn(
            final int opcode,
            final String owner,
            final String name,
            final String desc)
        {
            check(ownername + desc);
        }
        private void check(String ownerString member) {
            if (owner.startsWith("java/")) {
                String o = owner;
                while (o != null) {
                    if (.contains(o + ' ' + member)) {
                        return;
                    }
                    o = (String.get(o);
                }
                ..println("WARNING: " + owner + ' ' + member
                        + " called in " + this. + ' ' + 
                        + " is not defined in JDK 1.3 API");
            }
        }
    }
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