--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/src/share/classes/sun/io/ByteToCharASCII.java	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,92 @@
+/*
+ * Copyright 1997 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 sun.io;
+
+/**
+ * A algorithmic conversion from ASCII to Unicode
+ *
+ * @author Limin Shi
+ */
+public class ByteToCharASCII extends ByteToCharConverter {
+
+    // Return the character set id
+    public String getCharacterEncoding()
+    {
+        return "ASCII";
+    }
+
+    public int flush(char[] output, int outStart, int outEnd) {
+        // This converter will not buffer any data.
+        byteOff = charOff = 0;
+        return 0;
+    }
+
+    /**
+     * Algorithmic character conversion
+     */
+    public int convert(byte[] input, int inOff, int inEnd,
+                       char[] output, int outOff, int outEnd)
+        throws ConversionBufferFullException, UnknownCharacterException
+    {
+        byte    inputByte;
+
+        charOff = outOff;
+        byteOff = inOff;
+
+        // Loop until we hit the end of the input
+        while(byteOff < inEnd)
+        {
+            // If we don't have room for the output, throw an exception
+            if (charOff >= outEnd)
+                throw new ConversionBufferFullException();
+
+            // Convert the input byte
+            inputByte = input[byteOff++];
+
+            if (inputByte >= 0)
+                output[charOff++] = (char)inputByte;
+            else {
+                if (subMode)
+                    output[charOff++] = '\uFFFD';       // Replace Char
+                else {
+                    badInputLength = 1;
+                    throw new UnknownCharacterException();
+                }
+            }
+        }
+
+        // Return the length written to the output buffer
+        return charOff-outOff;
+    }
+
+    /*
+     *   Reset after finding bad input
+     */
+    public void reset() {
+        byteOff = charOff = 0;
+    }
+
+}