| /* |
| * Copyright (c) 1997, 2005, 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.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; |
| } |
| } |
| } |
