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/*
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* Copyright (c) 1997, 2005, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package sun.awt;
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import java.nio.ByteBuffer;
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import java.nio.CharBuffer;
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import java.nio.charset.*;
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public class Symbol extends Charset {
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public Symbol () {
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super("Symbol", null);
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}
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public CharsetEncoder newEncoder() {
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return new Encoder(this);
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}
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/* Seems like supporting a decoder is required, but we aren't going
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* to be publically exposing this class, so no need to waste work
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*/
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public CharsetDecoder newDecoder() {
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throw new Error("Decoder is not implemented for Symbol Charset");
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}
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public boolean contains(Charset cs) {
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return cs instanceof Symbol;
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}
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private static class Encoder extends CharsetEncoder {
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public Encoder(Charset cs) {
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super(cs, 1.0f, 1.0f);
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}
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public boolean canEncode(char c) {
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if (c >= 0x2200 && c <= 0x22ef) {
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if (table_math[c - 0x2200] != 0x00) {
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return true;
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}
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} else if (c >= 0x0391 && c <= 0x03d6) {
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if (table_greek[c - 0x0391] != 0x00) {
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return true;
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}
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}
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return false;
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}
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protected CoderResult encodeLoop(CharBuffer src, ByteBuffer dst) {
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char[] sa = src.array();
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int sp = src.arrayOffset() + src.position();
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int sl = src.arrayOffset() + src.limit();
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assert (sp <= sl);
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sp = (sp <= sl ? sp : sl);
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byte[] da = dst.array();
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int dp = dst.arrayOffset() + dst.position();
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int dl = dst.arrayOffset() + dst.limit();
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assert (dp <= dl);
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dp = (dp <= dl ? dp : dl);
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try {
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while (sp < sl) {
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char c = sa[sp];
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if (dl - dp < 1)
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return CoderResult.OVERFLOW;
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if (!canEncode(c))
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return CoderResult.unmappableForLength(1);
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sp++;
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if (c >= 0x2200 && c <= 0x22ef){
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da[dp++] = table_math[c - 0x2200];
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} else if (c >= 0x0391 && c <= 0x03d6) {
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da[dp++]= table_greek[c - 0x0391];
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}
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}
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return CoderResult.UNDERFLOW;
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} finally {
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src.position(sp - src.arrayOffset());
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dst.position(dp - dst.arrayOffset());
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}
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}
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private static byte[] table_math = {
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(byte)0042, (byte)0000, (byte)0144, (byte)0044,
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(byte)0000, (byte)0306, (byte)0104, (byte)0321, // 00
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(byte)0316, (byte)0317, (byte)0000, (byte)0000,
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(byte)0000, (byte)0047, (byte)0000, (byte)0120,
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(byte)0000, (byte)0345, (byte)0055, (byte)0000,
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(byte)0000, (byte)0244, (byte)0000, (byte)0052, // 10
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(byte)0260, (byte)0267, (byte)0326, (byte)0000,
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(byte)0000, (byte)0265, (byte)0245, (byte)0000,
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(byte)0000, (byte)0000, (byte)0000, (byte)0275,
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(byte)0000, (byte)0000, (byte)0000, (byte)0331, // 20
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(byte)0332, (byte)0307, (byte)0310, (byte)0362,
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(byte)0000, (byte)0000, (byte)0000, (byte)0000,
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(byte)0000, (byte)0000, (byte)0000, (byte)0000,
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(byte)0134, (byte)0000, (byte)0000, (byte)0000, // 30
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(byte)0000, (byte)0000, (byte)0000, (byte)0000,
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(byte)0176, (byte)0000, (byte)0000, (byte)0000,
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(byte)0000, (byte)0000, (byte)0000, (byte)0000,
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(byte)0000, (byte)0100, (byte)0000, (byte)0000, // 40
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(byte)0273, (byte)0000, (byte)0000, (byte)0000,
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(byte)0000, (byte)0000, (byte)0000, (byte)0000,
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(byte)0000, (byte)0000, (byte)0000, (byte)0000,
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(byte)0000, (byte)0000, (byte)0000, (byte)0000, // 50
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(byte)0000, (byte)0000, (byte)0000, (byte)0000,
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(byte)0000, (byte)0000, (byte)0000, (byte)0000,
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(byte)0271, (byte)0272, (byte)0000, (byte)0000,
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(byte)0243, (byte)0263, (byte)0000, (byte)0000, // 60
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(byte)0000, (byte)0000, (byte)0000, (byte)0000,
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(byte)0000, (byte)0000, (byte)0000, (byte)0000,
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(byte)0000, (byte)0000, (byte)0000, (byte)0000,
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(byte)0000, (byte)0000, (byte)0000, (byte)0000, // 70
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(byte)0000, (byte)0000, (byte)0000, (byte)0000,
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(byte)0000, (byte)0000, (byte)0000, (byte)0000,
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(byte)0000, (byte)0000, (byte)0314, (byte)0311,
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(byte)0313, (byte)0000, (byte)0315, (byte)0312, // 80
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(byte)0000, (byte)0000, (byte)0000, (byte)0000,
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(byte)0000, (byte)0000, (byte)0000, (byte)0000,
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(byte)0000, (byte)0000, (byte)0000, (byte)0000,
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(byte)0000, (byte)0305, (byte)0000, (byte)0304, // 90
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(byte)0000, (byte)0000, (byte)0000, (byte)0000,
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(byte)0000, (byte)0000, (byte)0000, (byte)0000,
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(byte)0000, (byte)0000, (byte)0000, (byte)0000,
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(byte)0000, (byte)0136, (byte)0000, (byte)0000, // a0
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(byte)0000, (byte)0000, (byte)0000, (byte)0000,
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(byte)0000, (byte)0000, (byte)0000, (byte)0000,
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(byte)0000, (byte)0000, (byte)0000, (byte)0000,
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(byte)0000, (byte)0000, (byte)0000, (byte)0000, // b0
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(byte)0000, (byte)0000, (byte)0000, (byte)0000,
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(byte)0000, (byte)0000, (byte)0000, (byte)0000,
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(byte)0000, (byte)0000, (byte)0000, (byte)0000,
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(byte)0340, (byte)0327, (byte)0000, (byte)0000, // c0
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(byte)0000, (byte)0000, (byte)0000, (byte)0000,
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(byte)0000, (byte)0000, (byte)0000, (byte)0000,
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(byte)0000, (byte)0000, (byte)0000, (byte)0000,
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(byte)0000, (byte)0000, (byte)0000, (byte)0000, // d0
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(byte)0000, (byte)0000, (byte)0000, (byte)0000,
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(byte)0000, (byte)0000, (byte)0000, (byte)0000,
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(byte)0000, (byte)0000, (byte)0000, (byte)0000,
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(byte)0000, (byte)0000, (byte)0000, (byte)0000, // e0
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(byte)0000, (byte)0000, (byte)0000, (byte)0000,
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(byte)0000, (byte)0000, (byte)0000, (byte)0274,
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};
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private static byte[] table_greek = {
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(byte)0101, (byte)0102, (byte)0107,
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(byte)0104, (byte)0105, (byte)0132, (byte)0110, // 90
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(byte)0121, (byte)0111, (byte)0113, (byte)0114,
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(byte)0115, (byte)0116, (byte)0130, (byte)0117,
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(byte)0120, (byte)0122, (byte)0000, (byte)0123,
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(byte)0124, (byte)0125, (byte)0106, (byte)0103, // a0
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(byte)0131, (byte)0127, (byte)0000, (byte)0000,
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(byte)0000, (byte)0000, (byte)0000, (byte)0000,
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(byte)0000, (byte)0141, (byte)0142, (byte)0147,
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(byte)0144, (byte)0145, (byte)0172, (byte)0150, // b0
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(byte)0161, (byte)0151, (byte)0153, (byte)0154,
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(byte)0155, (byte)0156, (byte)0170, (byte)0157,
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(byte)0160, (byte)0162, (byte)0126, (byte)0163,
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(byte)0164, (byte)0165, (byte)0146, (byte)0143, // c0
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(byte)0171, (byte)0167, (byte)0000, (byte)0000,
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(byte)0000, (byte)0000, (byte)0000, (byte)0000,
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(byte)0000, (byte)0112, (byte)0241, (byte)0000,
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(byte)0000, (byte)0152, (byte)0166, // d0
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};
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/* The default implementation creates a decoder and we don't have one */
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public boolean isLegalReplacement(byte[] repl) {
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return true;
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}
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}
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}
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