/*
* Copyright (c) 2006, 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 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;
import static sun.nio.cs.CharsetMapping.*;
// 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() {
IBM933.initb2c();
return new DoubleByte.Decoder_EBCDIC_DBCSONLY(
this, IBM933.b2c, 0x40, 0xfe); // hardcode the b2min/max
}
public CharsetEncoder newEncoder() {
IBM933.initc2b();
return new Encoder(this);
}
protected static class Encoder extends DoubleByte.Encoder_EBCDIC_DBCSONLY {
public Encoder(Charset cs) {
super(cs, new byte[] {(byte)0xfe, (byte)0xfe},
IBM933.c2b, IBM933.c2bIndex);
}
public int encodeChar(char ch) {
int bb = super.encodeChar(ch);
if (bb == UNMAPPABLE_ENCODING) {
// Cp834 has 6 additional non-roundtrip char->bytes
// mappings, see#6379808
if (ch == '\u00b7') {
return 0x4143;
} else if (ch == '\u00ad') {
return 0x4148;
} else if (ch == '\u2015') {
return 0x4149;
} else if (ch == '\u223c') {
return 0x42a1;
} else if (ch == '\uff5e') {
return 0x4954;
} else if (ch == '\u2299') {
return 0x496f;
}
}
return bb;
}
public boolean isLegalReplacement(byte[] repl) {
if (repl.length == 2 &&
repl[0] == (byte)0xfe && repl[1] == (byte)0xfe)
return true;
return super.isLegalReplacement(repl);
}
}
}