# HG changeset patch
# User Jaroslav Tulach <jaroslav.tulach@apidesign.org>
# Date 1359551029 -3600
# Node ID 9839e9a75bcf5a4b5a430a5d6d3ef12bb5a19e8d
# Parent  0127bd22630c302fbc0c0f6fd2461f2e96300712
Implementation of ZipInputStream

diff -r 0127bd22630c -r 9839e9a75bcf emul/mini/src/main/java/java/lang/Cloneable.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/emul/mini/src/main/java/java/lang/Cloneable.java	Wed Jan 30 14:03:49 2013 +0100
@@ -0,0 +1,54 @@
+/*
+ * Copyright (c) 1995, 2004, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code 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
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package java.lang;
+
+/**
+ * A class implements the <code>Cloneable</code> interface to
+ * indicate to the {@link java.lang.Object#clone()} method that it
+ * is legal for that method to make a
+ * field-for-field copy of instances of that class.
+ * <p>
+ * Invoking Object's clone method on an instance that does not implement the
+ * <code>Cloneable</code> interface results in the exception
+ * <code>CloneNotSupportedException</code> being thrown.
+ * <p>
+ * By convention, classes that implement this interface should override
+ * <tt>Object.clone</tt> (which is protected) with a public method.
+ * See {@link java.lang.Object#clone()} for details on overriding this
+ * method.
+ * <p>
+ * Note that this interface does <i>not</i> contain the <tt>clone</tt> method.
+ * Therefore, it is not possible to clone an object merely by virtue of the
+ * fact that it implements this interface.  Even if the clone method is invoked
+ * reflectively, there is no guarantee that it will succeed.
+ *
+ * @author  unascribed
+ * @see     java.lang.CloneNotSupportedException
+ * @see     java.lang.Object#clone()
+ * @since   JDK1.0
+ */
+public interface Cloneable {
+}
diff -r 0127bd22630c -r 9839e9a75bcf emul/mini/src/main/java/java/lang/String.java
--- a/emul/mini/src/main/java/java/lang/String.java	Wed Jan 30 14:01:52 2013 +0100
+++ b/emul/mini/src/main/java/java/lang/String.java	Wed Jan 30 14:03:49 2013 +0100
@@ -201,6 +201,10 @@
      *          If the {@code offset} and {@code count} arguments index
      *          characters outside the bounds of the {@code value} array
      */
+    public String(char value[], int offset, int count) {
+        initFromCharArray(value, offset, count);
+    }
+    
     @JavaScriptBody(args = { "charArr", "off", "cnt" }, body =
         "var up = off + cnt;\n" +
         "for (var i = off; i < up; i++) {\n" +
@@ -208,8 +212,7 @@
         "}\n" +
         "this._r(charArr.slice(off, up).join(\"\"));\n"
     )
-    public String(char value[], int offset, int count) {
-    }
+    private native void initFromCharArray(char value[], int offset, int count);
 
     /**
      * Allocates a new {@code String} that contains characters from a subarray
@@ -555,7 +558,7 @@
             int ch = nextChar(bytes, at);
             v[chlen++] = (char)ch;
         }
-        this.r = new String(v, 0, chlen);
+        initFromCharArray(v, 0, chlen);
     }
 
     /**
diff -r 0127bd22630c -r 9839e9a75bcf emul/mini/src/main/java/java/util/zip/CRC32.java
--- a/emul/mini/src/main/java/java/util/zip/CRC32.java	Wed Jan 30 14:01:52 2013 +0100
+++ b/emul/mini/src/main/java/java/util/zip/CRC32.java	Wed Jan 30 14:03:49 2013 +0100
@@ -33,7 +33,7 @@
  */
 public
 class CRC32 implements Checksum {
-    private int crc;
+    private int crc = 0xFFFFFFFF;
 
     /**
      * Creates a new CRC32 object.
@@ -49,7 +49,8 @@
      * @param b the byte to update the checksum with
      */
     public void update(int b) {
-        crc = update(crc, b);
+        byte[] arr = { (byte)b };
+        update(arr);
     }
 
     /**
@@ -88,6 +89,25 @@
         return (long)crc & 0xffffffffL;
     }
 
-    private native static int update(int crc, int b);
-    private native static int updateBytes(int crc, byte[] b, int off, int len);
+    // XXX: taken from 
+    // http://introcs.cs.princeton.edu/java/51data/CRC32.java.html
+    private static int updateBytes(int crc, byte[] arr, int off, int len) {
+        int poly = 0xEDB88320;   // reverse polynomial
+
+        while (len-- > 0) {
+            byte b = arr[off++];
+            int temp = (crc ^ b) & 0xff;
+
+            // read 8 bits one at a time
+            for (int i = 0; i < 8; i++) {
+                if ((temp & 1) == 1) {
+                    temp = (temp >>> 1) ^ poly;
+                } else {
+                    temp = (temp >>> 1);
+                }
+            }
+            crc = (crc >>> 8) ^ temp;
+        }
+        return crc ^ 0xffffffff;
+    }
 }
diff -r 0127bd22630c -r 9839e9a75bcf emul/mini/src/main/java/java/util/zip/Inflater.java
--- a/emul/mini/src/main/java/java/util/zip/Inflater.java	Wed Jan 30 14:01:52 2013 +0100
+++ b/emul/mini/src/main/java/java/util/zip/Inflater.java	Wed Jan 30 14:03:49 2013 +0100
@@ -25,6 +25,9 @@
 
 package java.util.zip;
 
+import org.apidesign.bck2brwsr.core.ExtraJavaScript;
+import org.apidesign.bck2brwsr.core.JavaScriptBody;
+
 /**
  * This class provides support for general purpose decompression using the
  * popular ZLIB compression library. The ZLIB compression library was
@@ -70,22 +73,19 @@
  * @author      David Connelly
  *
  */
+@ExtraJavaScript(
+    resource = "/org/apidesign/vm4brwsr/emul/zip/js-inflate.min.js"
+)
 public
 class Inflater {
-
-    private final ZStreamRef zsRef;
-    private byte[] buf = defaultBuf;
-    private int off, len;
+    private String data = "";
+    private int offset;
+    private long counter;
     private boolean finished;
     private boolean needDict;
 
     private static final byte[] defaultBuf = new byte[0];
 
-    static {
-        /* Zip library is loaded from System.initializeSystemClass */
-        initIDs();
-    }
-
     /**
      * Creates a new decompressor. If the parameter 'nowrap' is true then
      * the ZLIB header and checksum fields will not be used. This provides
@@ -98,7 +98,6 @@
      * @param nowrap if true then support GZIP compatible compression
      */
     public Inflater(boolean nowrap) {
-        zsRef = new ZStreamRef(init(nowrap));
     }
 
     /**
@@ -124,11 +123,7 @@
         if (off < 0 || len < 0 || off > b.length - len) {
             throw new ArrayIndexOutOfBoundsException();
         }
-        synchronized (zsRef) {
-            this.buf = b;
-            this.off = off;
-            this.len = len;
-        }
+        data = (String) infl(b, off, len);
     }
 
     /**
@@ -160,11 +155,7 @@
         if (off < 0 || len < 0 || off > b.length - len) {
             throw new ArrayIndexOutOfBoundsException();
         }
-        synchronized (zsRef) {
-            ensureOpen();
-            setDictionary(zsRef.address(), b, off, len);
-            needDict = false;
-        }
+        needDict = false;
     }
 
     /**
@@ -187,9 +178,7 @@
      * @return the total number of bytes remaining in the input buffer
      */
     public int getRemaining() {
-        synchronized (zsRef) {
-            return len;
-        }
+        return data.length() - offset;
     }
 
     /**
@@ -199,9 +188,7 @@
      * @return true if no data remains in the input buffer
      */
     public boolean needsInput() {
-        synchronized (zsRef) {
-            return len <= 0;
-        }
+        return getRemaining() <= 0;
     }
 
     /**
@@ -210,9 +197,7 @@
      * @see Inflater#setDictionary
      */
     public boolean needsDictionary() {
-        synchronized (zsRef) {
-            return needDict;
-        }
+        return needDict;
     }
 
     /**
@@ -222,9 +207,7 @@
      * reached
      */
     public boolean finished() {
-        synchronized (zsRef) {
-            return finished;
-        }
+        return finished;
     }
 
     /**
@@ -251,11 +234,21 @@
         if (off < 0 || len < 0 || off > b.length - len) {
             throw new ArrayIndexOutOfBoundsException();
         }
-        synchronized (zsRef) {
-            ensureOpen();
-            return inflateBytes(zsRef.address(), b, off, len);
+        int cnt = 0;
+        while (offset < data.length()) {
+            b[off++] = (byte)data.charAt(offset++);
+            cnt++;
+            counter++;
         }
+        return cnt;
     }
+    
+    @JavaScriptBody(args = { "arr", "offset", "len" }, body = 
+          "var r = {};\n"
+        + "r.charCodeAt = function(idx) { return arr[offset + idx]; };\n"
+        + "return JSInflate.inflate(r);"
+    )
+    private static native Object infl(byte[] arr, int offset, int len);
 
     /**
      * Uncompresses bytes into specified buffer. Returns actual number
@@ -279,10 +272,7 @@
      * @return the ADLER-32 value of the uncompressed data
      */
     public int getAdler() {
-        synchronized (zsRef) {
-            ensureOpen();
-            return getAdler(zsRef.address());
-        }
+        return 0;
     }
 
     /**
@@ -305,10 +295,7 @@
      * @since 1.5
      */
     public long getBytesRead() {
-        synchronized (zsRef) {
-            ensureOpen();
-            return getBytesRead(zsRef.address());
-        }
+        return counter;
     }
 
     /**
@@ -331,24 +318,17 @@
      * @since 1.5
      */
     public long getBytesWritten() {
-        synchronized (zsRef) {
-            ensureOpen();
-            return getBytesWritten(zsRef.address());
-        }
+        return counter;
     }
 
     /**
      * Resets inflater so that a new set of input data can be processed.
      */
     public void reset() {
-        synchronized (zsRef) {
-            ensureOpen();
-            reset(zsRef.address());
-            buf = defaultBuf;
-            finished = false;
-            needDict = false;
-            off = len = 0;
-        }
+        data = "";
+        finished = false;
+        needDict = false;
+        offset = 0;
     }
 
     /**
@@ -359,44 +339,5 @@
      * object is undefined.
      */
     public void end() {
-        synchronized (zsRef) {
-            long addr = zsRef.address();
-            zsRef.clear();
-            if (addr != 0) {
-                end(addr);
-                buf = null;
-            }
-        }
     }
-
-    /**
-     * Closes the decompressor when garbage is collected.
-     */
-    protected void finalize() {
-        end();
-    }
-
-    private void ensureOpen () {
-        assert Thread.holdsLock(zsRef);
-        if (zsRef.address() == 0)
-            throw new NullPointerException("Inflater has been closed");
-    }
-
-    boolean ended() {
-        synchronized (zsRef) {
-            return zsRef.address() == 0;
-        }
-    }
-
-    private native static void initIDs();
-    private native static long init(boolean nowrap);
-    private native static void setDictionary(long addr, byte[] b, int off,
-                                             int len);
-    private native int inflateBytes(long addr, byte[] b, int off, int len)
-            throws DataFormatException;
-    private native static int getAdler(long addr);
-    private native static long getBytesRead(long addr);
-    private native static long getBytesWritten(long addr);
-    private native static void reset(long addr);
-    private native static void end(long addr);
 }
diff -r 0127bd22630c -r 9839e9a75bcf emul/mini/src/main/java/java/util/zip/ZipEntry.java
--- a/emul/mini/src/main/java/java/util/zip/ZipEntry.java	Wed Jan 30 14:01:52 2013 +0100
+++ b/emul/mini/src/main/java/java/util/zip/ZipEntry.java	Wed Jan 30 14:03:49 2013 +0100
@@ -25,8 +25,6 @@
 
 package java.util.zip;
 
-import java.util.Date;
-
 /**
  * This class is used to represent a ZIP file entry.
  *
@@ -281,6 +279,8 @@
      * Converts DOS time to Java time (number of milliseconds since epoch).
      */
     private static long dosToJavaTime(long dtime) {
+        return dtime;
+        /* XXX:
         Date d = new Date((int)(((dtime >> 25) & 0x7f) + 80),
                           (int)(((dtime >> 21) & 0x0f) - 1),
                           (int)((dtime >> 16) & 0x1f),
@@ -288,12 +288,15 @@
                           (int)((dtime >> 5) & 0x3f),
                           (int)((dtime << 1) & 0x3e));
         return d.getTime();
+        */
     }
 
     /*
      * Converts Java time to DOS time.
      */
     private static long javaToDosTime(long time) {
+        return time;
+        /* XXX:
         Date d = new Date(time);
         int year = d.getYear() + 1900;
         if (year < 1980) {
@@ -302,6 +305,7 @@
         return (year - 1980) << 25 | (d.getMonth() + 1) << 21 |
                d.getDate() << 16 | d.getHours() << 11 | d.getMinutes() << 5 |
                d.getSeconds() >> 1;
+        */
     }
 
     /**
@@ -321,7 +325,7 @@
             return e;
         } catch (CloneNotSupportedException e) {
             // This should never happen, since we are Cloneable
-            throw new InternalError();
+            throw new IllegalStateException();
         }
     }
 }
diff -r 0127bd22630c -r 9839e9a75bcf emul/mini/src/main/java/java/util/zip/ZipInputStream.java
--- a/emul/mini/src/main/java/java/util/zip/ZipInputStream.java	Wed Jan 30 14:01:52 2013 +0100
+++ b/emul/mini/src/main/java/java/util/zip/ZipInputStream.java	Wed Jan 30 14:03:49 2013 +0100
@@ -29,9 +29,8 @@
 import java.io.IOException;
 import java.io.EOFException;
 import java.io.PushbackInputStream;
-import java.nio.charset.Charset;
-import java.nio.charset.StandardCharsets;
 import static java.util.zip.ZipConstants64.*;
+import org.apidesign.bck2brwsr.core.JavaScriptBody;
 
 /**
  * This class implements an input stream filter for reading files in the
@@ -56,8 +55,6 @@
     // one entry
     private boolean entryEOF = false;
 
-    private ZipCoder zc;
-
     /**
      * Check to make sure that this stream has not been closed
      */
@@ -76,7 +73,12 @@
      * @param in the actual input stream
      */
     public ZipInputStream(InputStream in) {
-        this(in, StandardCharsets.UTF_8);
+//        this(in, "UTF-8");
+        super(new PushbackInputStream(in, 512), new Inflater(true), 512);
+        usesDefaultInflater = true;
+        if(in == null) {
+            throw new NullPointerException("in is null");
+        }
     }
 
     /**
@@ -92,7 +94,7 @@
      *        flag is set).
      *
      * @since 1.7
-     */
+     *
     public ZipInputStream(InputStream in, Charset charset) {
         super(new PushbackInputStream(in, 512), new Inflater(true), 512);
         usesDefaultInflater = true;
@@ -103,6 +105,7 @@
             throw new NullPointerException("charset is null");
         this.zc = ZipCoder.get(charset);
     }
+    */
 
     /**
      * Reads the next ZIP file entry and positions the stream at the
@@ -295,8 +298,8 @@
         readFully(b, 0, len);
         // Force to use UTF-8 if the EFS bit is ON, even the cs is NOT UTF-8
         ZipEntry e = createZipEntry(((flag & EFS) != 0)
-                                    ? zc.toStringUTF8(b, len)
-                                    : zc.toString(b, len));
+                                    ? toStringUTF8(b, len)
+                                    : toString(b, len));
         // now get the remaining fields for the entry
         if ((flag & 1) == 1) {
             throw new ZipException("encrypted ZIP entry not supported");
@@ -453,4 +456,12 @@
     private static final long get64(byte b[], int off) {
         return get32(b, off) | (get32(b, off+4) << 32);
     }
+
+    private static String toStringUTF8(byte[] arr, int len) {
+        return new String(arr, 0, len);
+    }
+    
+    private static String toString(byte[] b, int len) {
+        return new String(b, 0, len);
+    }
 }
diff -r 0127bd22630c -r 9839e9a75bcf emul/mini/src/main/resources/org/apidesign/vm4brwsr/emul/zip/js-inflate.min.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/emul/mini/src/main/resources/org/apidesign/vm4brwsr/emul/zip/js-inflate.min.js	Wed Jan 30 14:03:49 2013 +0100
@@ -0,0 +1,1 @@
+(function(G){var n=32768;var w=0;var I=1;var i=2;var S=9;var h=6;var t=32768;var a=64;var C;var k;var Q=null;var b;var M,D;var s;var r;var U;var N;var T;var y;var m,p;var f,j;var B;var E;var P=new Array(0,1,3,7,15,31,63,127,255,511,1023,2047,4095,8191,16383,32767,65535);var c=new Array(3,4,5,6,7,8,9,10,11,13,15,17,19,23,27,31,35,43,51,59,67,83,99,115,131,163,195,227,258,0,0);var L=new Array(0,0,0,0,0,0,0,0,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,5,5,5,5,0,99,99);var J=new Array(1,2,3,4,5,7,9,13,17,25,33,49,65,97,129,193,257,385,513,769,1025,1537,2049,3073,4097,6145,8193,12289,16385,24577);var z=new Array(0,0,0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13);var q=new Array(16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15);function x(){this.next=null;this.list=null}function H(){this.e=0;this.b=0;this.n=0;this.t=null}function l(ax,al,ag,av,au,aq){this.BMAX=16;this.N_MAX=288;this.status=0;this.root=null;this.m=0;var ay;var aw=new Array(this.BMAX+1);var V;var at;var ar;var ap;var ao;var an;var am;var W=new Array(this.BMAX+1);var aj;var X;var ai;var ah=new H();var af=new Array(this.BMAX);var ae=new Array(this.N_MAX);var ad;var ab=new Array(this.BMAX+1);var ac;var aa;var Z;var ak;var 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\ No newline at end of file
diff -r 0127bd22630c -r 9839e9a75bcf vmtest/src/main/java/org/apidesign/bck2brwsr/vmtest/impl/GenerateZip.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/vmtest/src/main/java/org/apidesign/bck2brwsr/vmtest/impl/GenerateZip.java	Wed Jan 30 14:03:49 2013 +0100
@@ -0,0 +1,36 @@
+/**
+ * Back 2 Browser Bytecode Translator
+ * Copyright (C) 2012 Jaroslav Tulach <jaroslav.tulach@apidesign.org>
+ *
+ * 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, version 2 of the License.
+ *
+ * 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. Look for COPYING file in the top folder.
+ * If not, see http://opensource.org/licenses/GPL-2.0.
+ */
+package org.apidesign.bck2brwsr.vmtest.impl;
+
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+
+/** Annotation to generate a ZIP or JAR file during build.
+ *
+ * @author Jaroslav Tulach <jtulach@netbeans.org>
+ */
+@Retention(RetentionPolicy.SOURCE)
+@interface GenerateZip {
+    String name();
+    
+    /** manifest for the file */
+    String manifest() default "";
+
+    /** Array of names (at odd positions) and their content (on even) */
+    String[] contents();
+}
diff -r 0127bd22630c -r 9839e9a75bcf vmtest/src/main/java/org/apidesign/bck2brwsr/vmtest/impl/GenerateZipProcessor.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/vmtest/src/main/java/org/apidesign/bck2brwsr/vmtest/impl/GenerateZipProcessor.java	Wed Jan 30 14:03:49 2013 +0100
@@ -0,0 +1,98 @@
+/**
+ * Back 2 Browser Bytecode Translator
+ * Copyright (C) 2012 Jaroslav Tulach <jaroslav.tulach@apidesign.org>
+ *
+ * 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, version 2 of the License.
+ *
+ * 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. Look for COPYING file in the top folder.
+ * If not, see http://opensource.org/licenses/GPL-2.0.
+ */
+package org.apidesign.bck2brwsr.vmtest.impl;
+
+import java.io.ByteArrayInputStream;
+import java.io.IOException;
+import java.io.OutputStream;
+import java.util.Set;
+import java.util.jar.JarEntry;
+import java.util.jar.JarOutputStream;
+import java.util.jar.Manifest;
+import javax.annotation.processing.AbstractProcessor;
+import javax.annotation.processing.Processor;
+import javax.annotation.processing.RoundEnvironment;
+import javax.annotation.processing.SupportedAnnotationTypes;
+import javax.lang.model.element.Element;
+import javax.lang.model.element.ElementKind;
+import javax.lang.model.element.PackageElement;
+import javax.lang.model.element.TypeElement;
+import javax.tools.Diagnostic;
+import javax.tools.FileObject;
+import javax.tools.StandardLocation;
+import org.openide.util.lookup.ServiceProvider;
+
+/**
+ *
+ * @author Jaroslav Tulach <jtulach@netbeans.org>
+ */
+@ServiceProvider(service = Processor.class)
+@SupportedAnnotationTypes("org.apidesign.bck2brwsr.vmtest.impl.GenerateZip")
+public class GenerateZipProcessor extends AbstractProcessor {
+
+    @Override
+    public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) {
+        for (Element e : roundEnv.getElementsAnnotatedWith(GenerateZip.class)) {
+            GenerateZip gz = e.getAnnotation(GenerateZip.class);
+            if (gz == null) {
+                continue;
+            }
+            PackageElement pe = findPackage(e);
+            try {
+                generateJar(pe, gz, e);
+            } catch (IOException ex) {
+                processingEnv.getMessager().printMessage(
+                    Diagnostic.Kind.ERROR, 
+                    "Can't generate JAR " + gz.name() + ": " + ex.getMessage()
+                );
+            }
+        }
+        return true;
+    }
+
+    private static PackageElement findPackage(Element e) {
+        while (e.getKind() != ElementKind.PACKAGE) {
+            e = e.getEnclosingElement();
+        }
+        return (PackageElement)e;
+    }
+
+    private void generateJar(PackageElement pe, GenerateZip gz, Element e) throws IOException {
+        FileObject res = processingEnv.getFiler().createResource(
+            StandardLocation.CLASS_OUTPUT, 
+            pe.getQualifiedName().toString(), 
+            gz.name(), e
+        );
+        OutputStream os = res.openOutputStream();
+        JarOutputStream jar;
+        if (gz.manifest().isEmpty()) {
+            jar = new JarOutputStream(os);
+        } else {
+            Manifest mf = new Manifest(new ByteArrayInputStream(gz.manifest().getBytes("UTF-8")));
+            jar = new JarOutputStream(os, mf);
+        }
+        String[] arr = gz.contents();
+        for (int i = 0; i < arr.length; i += 2) {
+            JarEntry je = new JarEntry(arr[i]);
+            jar.putNextEntry(je);
+            jar.write(arr[i + 1].getBytes("UTF-8"));
+            jar.closeEntry();
+        }
+    }
+    
+}
diff -r 0127bd22630c -r 9839e9a75bcf vmtest/src/test/java/org/apidesign/bck2brwsr/vmtest/impl/CRC32Test.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/vmtest/src/test/java/org/apidesign/bck2brwsr/vmtest/impl/CRC32Test.java	Wed Jan 30 14:03:49 2013 +0100
@@ -0,0 +1,41 @@
+/**
+ * Back 2 Browser Bytecode Translator
+ * Copyright (C) 2012 Jaroslav Tulach <jaroslav.tulach@apidesign.org>
+ *
+ * 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, version 2 of the License.
+ *
+ * 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. Look for COPYING file in the top folder.
+ * If not, see http://opensource.org/licenses/GPL-2.0.
+ */
+package org.apidesign.bck2brwsr.vmtest.impl;
+
+import java.io.UnsupportedEncodingException;
+import java.util.zip.CRC32;
+import org.apidesign.bck2brwsr.vmtest.Compare;
+import org.apidesign.bck2brwsr.vmtest.VMTest;
+import org.testng.annotations.Factory;
+
+/**
+ *
+ * @author Jaroslav Tulach <jtulach@netbeans.org>
+ */
+public class CRC32Test {
+
+    @Compare public long crc1() throws UnsupportedEncodingException {
+        CRC32 crc = new CRC32();
+        crc.update("Hello World!".getBytes("UTF-8"));
+        return crc.getValue();
+    }
+    
+    @Factory public static Object[] create() {
+        return VMTest.create(CRC32Test.class);
+    }
+}
diff -r 0127bd22630c -r 9839e9a75bcf vmtest/src/test/java/org/apidesign/bck2brwsr/vmtest/impl/ZipFileTest.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/vmtest/src/test/java/org/apidesign/bck2brwsr/vmtest/impl/ZipFileTest.java	Wed Jan 30 14:03:49 2013 +0100
@@ -0,0 +1,54 @@
+/**
+ * Back 2 Browser Bytecode Translator
+ * Copyright (C) 2012 Jaroslav Tulach <jaroslav.tulach@apidesign.org>
+ *
+ * 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, version 2 of the License.
+ *
+ * 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. Look for COPYING file in the top folder.
+ * If not, see http://opensource.org/licenses/GPL-2.0.
+ */
+package org.apidesign.bck2brwsr.vmtest.impl;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.zip.ZipEntry;
+import java.util.zip.ZipInputStream;
+import org.apidesign.bck2brwsr.vmtest.Compare;
+import org.apidesign.bck2brwsr.vmtest.VMTest;
+import org.testng.annotations.Factory;
+
+/**
+ *
+ * @author Jaroslav Tulach <jtulach@netbeans.org>
+ */
+public class ZipFileTest {
+    
+    @GenerateZip(name = "readAnEntry.zip", contents = { "my/main/file.txt", "Hello World!" })
+    @Compare public String readAnEntry() throws IOException {
+        InputStream is = ZipFileTest.class.getResourceAsStream("readAnEntry.zip");
+        ZipInputStream zip = new ZipInputStream(is);
+        ZipEntry entry = zip.getNextEntry();
+        assertEquals(entry.getName(), "my/main/file.txt", "Correct entry");
+        
+        byte[] arr = new byte[4096];
+        int len = zip.read(arr);
+        
+        return new String(arr, 0, len, "UTF-8");
+    }
+
+    private static void assertEquals(String real, String exp, String msg) {
+        assert exp.equals(real) : msg + " exp: " + exp + " real: " + real;
+    }
+    
+    @Factory public static Object[] create() {
+        return VMTest.create(ZipFileTest.class);
+    }
+}