/*
* Copyright 1997-2005 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.awt;
import java.nio.ByteBuffer;
import java.nio.CharBuffer;
import java.nio.charset.*;
public class Symbol extends Charset {
public Symbol () {
super("Symbol", null);
}
public CharsetEncoder newEncoder() {
return new Encoder(this);
}
/* Seems like supporting a decoder is required, but we aren't going
* to be publically exposing this class, so no need to waste work
*/
public CharsetDecoder newDecoder() {
throw new Error("Decoder is not implemented for Symbol Charset");
}
public boolean contains(Charset cs) {
return cs instanceof Symbol;
}
private static class Encoder extends CharsetEncoder {
public Encoder(Charset cs) {
super(cs, 1.0f, 1.0f);
}
public boolean canEncode(char c) {
if (c >= 0x2200 && c <= 0x22ef) {
if (table_math[c - 0x2200] != 0x00) {
return true;
}
} else if (c >= 0x0391 && c <= 0x03d6) {
if (table_greek[c - 0x0391] != 0x00) {
return true;
}
}
return false;
}
protected CoderResult encodeLoop(CharBuffer src, ByteBuffer dst) {
char[] sa = src.array();
int sp = src.arrayOffset() + src.position();
int sl = src.arrayOffset() + src.limit();
assert (sp <= sl);
sp = (sp <= sl ? sp : sl);
byte[] da = dst.array();
int dp = dst.arrayOffset() + dst.position();
int dl = dst.arrayOffset() + dst.limit();
assert (dp <= dl);
dp = (dp <= dl ? dp : dl);
try {
while (sp < sl) {
char c = sa[sp];
if (dl - dp < 1)
return CoderResult.OVERFLOW;
if (!canEncode(c))
return CoderResult.unmappableForLength(1);
sp++;
if (c >= 0x2200 && c <= 0x22ef){
da[dp++] = table_math[c - 0x2200];
} else if (c >= 0x0391 && c <= 0x03d6) {
da[dp++]= table_greek[c - 0x0391];
}
}
return CoderResult.UNDERFLOW;
} finally {
src.position(sp - src.arrayOffset());
dst.position(dp - dst.arrayOffset());
}
}
private static byte[] table_math = {
(byte)0042, (byte)0000, (byte)0144, (byte)0044,
(byte)0000, (byte)0306, (byte)0104, (byte)0321, // 00
(byte)0316, (byte)0317, (byte)0000, (byte)0000,
(byte)0000, (byte)0047, (byte)0000, (byte)0120,
(byte)0000, (byte)0345, (byte)0055, (byte)0000,
(byte)0000, (byte)0244, (byte)0000, (byte)0052, // 10
(byte)0260, (byte)0267, (byte)0326, (byte)0000,
(byte)0000, (byte)0265, (byte)0245, (byte)0000,
(byte)0000, (byte)0000, (byte)0000, (byte)0275,
(byte)0000, (byte)0000, (byte)0000, (byte)0331, // 20
(byte)0332, (byte)0307, (byte)0310, (byte)0362,
(byte)0000, (byte)0000, (byte)0000, (byte)0000,
(byte)0000, (byte)0000, (byte)0000, (byte)0000,
(byte)0134, (byte)0000, (byte)0000, (byte)0000, // 30
(byte)0000, (byte)0000, (byte)0000, (byte)0000,
(byte)0176, (byte)0000, (byte)0000, (byte)0000,
(byte)0000, (byte)0000, (byte)0000, (byte)0000,
(byte)0000, (byte)0100, (byte)0000, (byte)0000, // 40
(byte)0273, (byte)0000, (byte)0000, (byte)0000,
(byte)0000, (byte)0000, (byte)0000, (byte)0000,
(byte)0000, (byte)0000, (byte)0000, (byte)0000,
(byte)0000, (byte)0000, (byte)0000, (byte)0000, // 50
(byte)0000, (byte)0000, (byte)0000, (byte)0000,
(byte)0000, (byte)0000, (byte)0000, (byte)0000,
(byte)0271, (byte)0272, (byte)0000, (byte)0000,
(byte)0243, (byte)0263, (byte)0000, (byte)0000, // 60
(byte)0000, (byte)0000, (byte)0000, (byte)0000,
(byte)0000, (byte)0000, (byte)0000, (byte)0000,
(byte)0000, (byte)0000, (byte)0000, (byte)0000,
(byte)0000, (byte)0000, (byte)0000, (byte)0000, // 70
(byte)0000, (byte)0000, (byte)0000, (byte)0000,
(byte)0000, (byte)0000, (byte)0000, (byte)0000,
(byte)0000, (byte)0000, (byte)0314, (byte)0311,
(byte)0313, (byte)0000, (byte)0315, (byte)0312, // 80
(byte)0000, (byte)0000, (byte)0000, (byte)0000,
(byte)0000, (byte)0000, (byte)0000, (byte)0000,
(byte)0000, (byte)0000, (byte)0000, (byte)0000,
(byte)0000, (byte)0305, (byte)0000, (byte)0304, // 90
(byte)0000, (byte)0000, (byte)0000, (byte)0000,
(byte)0000, (byte)0000, (byte)0000, (byte)0000,
(byte)0000, (byte)0000, (byte)0000, (byte)0000,
(byte)0000, (byte)0136, (byte)0000, (byte)0000, // a0
(byte)0000, (byte)0000, (byte)0000, (byte)0000,
(byte)0000, (byte)0000, (byte)0000, (byte)0000,
(byte)0000, (byte)0000, (byte)0000, (byte)0000,
(byte)0000, (byte)0000, (byte)0000, (byte)0000, // b0
(byte)0000, (byte)0000, (byte)0000, (byte)0000,
(byte)0000, (byte)0000, (byte)0000, (byte)0000,
(byte)0000, (byte)0000, (byte)0000, (byte)0000,
(byte)0340, (byte)0327, (byte)0000, (byte)0000, // c0
(byte)0000, (byte)0000, (byte)0000, (byte)0000,
(byte)0000, (byte)0000, (byte)0000, (byte)0000,
(byte)0000, (byte)0000, (byte)0000, (byte)0000,
(byte)0000, (byte)0000, (byte)0000, (byte)0000, // d0
(byte)0000, (byte)0000, (byte)0000, (byte)0000,
(byte)0000, (byte)0000, (byte)0000, (byte)0000,
(byte)0000, (byte)0000, (byte)0000, (byte)0000,
(byte)0000, (byte)0000, (byte)0000, (byte)0000, // e0
(byte)0000, (byte)0000, (byte)0000, (byte)0000,
(byte)0000, (byte)0000, (byte)0000, (byte)0274,
};
private static byte[] table_greek = {
(byte)0101, (byte)0102, (byte)0107,
(byte)0104, (byte)0105, (byte)0132, (byte)0110, // 90
(byte)0121, (byte)0111, (byte)0113, (byte)0114,
(byte)0115, (byte)0116, (byte)0130, (byte)0117,
(byte)0120, (byte)0122, (byte)0000, (byte)0123,
(byte)0124, (byte)0125, (byte)0106, (byte)0103, // a0
(byte)0131, (byte)0127, (byte)0000, (byte)0000,
(byte)0000, (byte)0000, (byte)0000, (byte)0000,
(byte)0000, (byte)0141, (byte)0142, (byte)0147,
(byte)0144, (byte)0145, (byte)0172, (byte)0150, // b0
(byte)0161, (byte)0151, (byte)0153, (byte)0154,
(byte)0155, (byte)0156, (byte)0170, (byte)0157,
(byte)0160, (byte)0162, (byte)0126, (byte)0163,
(byte)0164, (byte)0165, (byte)0146, (byte)0143, // c0
(byte)0171, (byte)0167, (byte)0000, (byte)0000,
(byte)0000, (byte)0000, (byte)0000, (byte)0000,
(byte)0000, (byte)0112, (byte)0241, (byte)0000,
(byte)0000, (byte)0152, (byte)0166, // d0
};
/* The default implementation creates a decoder and we don't have one */
public boolean isLegalReplacement(byte[] repl) {
return true;
}
}
}
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