--- /dev/null	Wed May 20 19:00:36 2009
+++ new/test/sun/nio/cs/OLD/DBCSDecoderMapping.java	Wed May 20 19:00:35 2009
@@ -0,0 +1,76 @@
+/*
+ * Copyright 2003 Sun Microsystems, Inc.  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.  Sun designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+/*
+ *
+ * package private helper class which provides decoder (native->ucs)
+ * mapping capability for the benefit of compound encoders/decoders
+ * whose individual component submappings do not need an association with
+ * an enclosing charset
+ *
+ */
+
+
+public class DBCSDecoderMapping {
+
+    /* 1rst level index */
+    private short[] index1;
+    /*
+     * 2nd level index, provided by subclass
+     * every string has 0x10*(end-start+1) characters.
+     */
+    private String[] index2;
+
+    protected int start;
+    protected int end;
+
+    protected static final char REPLACE_CHAR='\uFFFD';
+
+    public DBCSDecoderMapping(short[] index1, String[] index2,
+                             int start, int end) {
+        this.index1 = index1;
+        this.index2 = index2;
+        this.start = start;
+        this.end = end;
+    }
+
+    /*
+     * Can be changed by subclass
+     */
+    protected char decodeSingle(int b) {
+        if (b >= 0)
+            return (char) b;
+        return REPLACE_CHAR;
+    }
+
+    protected char decodeDouble(int byte1, int byte2) {
+        if (((byte1 < 0) || (byte1 > index1.length))
+            || ((byte2 < start) || (byte2 > end)))
+            return REPLACE_CHAR;
+
+        int n = (index1[byte1] & 0xf) * (end - start + 1) + (byte2 - start);
+        return index2[index1[byte1] >> 4].charAt(n);
+    }
+}