--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/src/share/classes/sun/nio/cs/ext/IBM834.java	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,115 @@
+
+/*
+ * Copyright 2006 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.nio.cs.ext;
+
+import java.nio.ByteBuffer;
+import java.nio.charset.Charset;
+import java.nio.charset.CharsetDecoder;
+import java.nio.charset.CharsetEncoder;
+import java.nio.charset.CoderResult;
+
+// EBCDIC DBCS-only Korean
+public class IBM834
+    extends Charset
+{
+    public IBM834() {
+        super("x-IBM834", ExtendedCharsets.aliasesFor("x-IBM834"));
+    }
+
+    public boolean contains(Charset cs) {
+        return (cs instanceof IBM834);
+    }
+
+    public CharsetDecoder newDecoder() {
+        return new Decoder(this);
+    }
+
+    public CharsetEncoder newEncoder() {
+        return new Encoder(this);
+    }
+
+    protected static class Decoder extends DBCS_ONLY_IBM_EBCDIC_Decoder {
+        public Decoder(Charset cs) {
+            super(cs);
+            super.mask1 = 0xFFF0;
+            super.mask2 = 0x000F;
+            super.shift = 4;
+            super.index1 = IBM933.getDecoderIndex1();
+            super.index2 = IBM933.getDecoderIndex2();
+        }
+    }
+
+    protected static class Encoder extends IBM933.Encoder {
+        public Encoder(Charset cs) {
+            super(cs, new byte[] {(byte)0xfe, (byte)0xfe}, false);
+        }
+
+        protected CoderResult implFlush(ByteBuffer out) {
+            implReset();
+            return CoderResult.UNDERFLOW;
+        }
+
+        protected byte[] encodeHangul(char ch) {
+            byte[] bytes = super.encodeHangul(ch);
+            if (bytes.length == 0) {
+                // Cp834 has 6 additional non-roundtrip char->bytes
+                // mappings, see#6379808
+                if (ch == '\u00b7') {
+                    return new byte[] {(byte)0x41, (byte)0x43 };
+                } else if (ch == '\u00ad') {
+                    return new byte[] {(byte)0x41, (byte)0x48 };
+                } else if (ch == '\u2015') {
+                    return new byte[] {(byte)0x41, (byte)0x49 };
+                } else if (ch == '\u223c') {
+                    return new byte[] {(byte)0x42, (byte)0xa1 };
+                } else if (ch == '\uff5e') {
+                    return new byte[] {(byte)0x49, (byte)0x54 };
+                } else if (ch == '\u2299') {
+                    return new byte[] {(byte)0x49, (byte)0x6f };
+                }
+            } else if (bytes[0] == 0) {
+                return EMPTYBA;
+            }
+            return bytes;
+        }
+
+        public boolean canEncode(char ch) {
+            return encodeHangul(ch).length != 0;
+        }
+
+        public boolean isLegalReplacement(byte[] repl) {
+            if (repl.length == 2 &&
+                repl[0] == (byte)0xfe && repl[1] == (byte)0xfe)
+                return true;
+            return super.isLegalReplacement(repl);
+        }
+
+    }
+}