diff -r 48ef38e9677e -r 0d277415ed02 emul/mini/src/main/java/org/apidesign/bck2brwsr/emul/zip/ZipConstants64.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/emul/mini/src/main/java/org/apidesign/bck2brwsr/emul/zip/ZipConstants64.java	Thu Feb 07 12:58:12 2013 +0100
@@ -0,0 +1,84 @@
+/*
+ * Copyright (c) 1995, 1996, 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 org.apidesign.bck2brwsr.emul.zip;
+
+/*
+ * This class defines the constants that are used by the classes
+ * which manipulate Zip64 files.
+ */
+
+public class ZipConstants64 {
+
+    /*
+     * ZIP64 constants
+     */
+    static final long ZIP64_ENDSIG = 0x06064b50L;  // "PK\006\006"
+    static final long ZIP64_LOCSIG = 0x07064b50L;  // "PK\006\007"
+    static final int  ZIP64_ENDHDR = 56;           // ZIP64 end header size
+    static final int  ZIP64_LOCHDR = 20;           // ZIP64 end loc header size
+    static final int  ZIP64_EXTHDR = 24;           // EXT header size
+    static final int  ZIP64_EXTID  = 0x0001;       // Extra field Zip64 header ID
+
+    static final int  ZIP64_MAGICCOUNT = 0xFFFF;
+    static final long ZIP64_MAGICVAL = 0xFFFFFFFFL;
+
+    /*
+     * Zip64 End of central directory (END) header field offsets
+     */
+    static final int  ZIP64_ENDLEN = 4;       // size of zip64 end of central dir
+    static final int  ZIP64_ENDVEM = 12;      // version made by
+    static final int  ZIP64_ENDVER = 14;      // version needed to extract
+    static final int  ZIP64_ENDNMD = 16;      // number of this disk
+    static final int  ZIP64_ENDDSK = 20;      // disk number of start
+    static final int  ZIP64_ENDTOD = 24;      // total number of entries on this disk
+    static final int  ZIP64_ENDTOT = 32;      // total number of entries
+    static final int  ZIP64_ENDSIZ = 40;      // central directory size in bytes
+    static final int  ZIP64_ENDOFF = 48;      // offset of first CEN header
+    static final int  ZIP64_ENDEXT = 56;      // zip64 extensible data sector
+
+    /*
+     * Zip64 End of central directory locator field offsets
+     */
+    static final int  ZIP64_LOCDSK = 4;       // disk number start
+    static final int  ZIP64_LOCOFF = 8;       // offset of zip64 end
+    static final int  ZIP64_LOCTOT = 16;      // total number of disks
+
+    /*
+     * Zip64 Extra local (EXT) header field offsets
+     */
+    static final int  ZIP64_EXTCRC = 4;       // uncompressed file crc-32 value
+    static final int  ZIP64_EXTSIZ = 8;       // compressed size, 8-byte
+    static final int  ZIP64_EXTLEN = 16;      // uncompressed size, 8-byte
+
+    /*
+     * Language encoding flag EFS
+     */
+    static final int EFS = 0x800;       // If this bit is set the filename and
+                                        // comment fields for this file must be
+                                        // encoded using UTF-8.
+
+    private ZipConstants64() {}
+}