| /* |
| * Copyright (c) 1996, 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.font; |
| |
| import java.nio.ByteBuffer; |
| import java.nio.CharBuffer; |
| import java.nio.charset.*; |
| |
| public class X11Dingbats extends Charset { |
| public X11Dingbats () { |
| super("X11Dingbats", 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 supported by X11Dingbats Charset"); |
| } |
| |
| public boolean contains(Charset cs) { |
| return cs instanceof X11Dingbats; |
| } |
| |
| private static class Encoder extends CharsetEncoder { |
| public Encoder(Charset cs) { |
| super(cs, 1.0f, 1.0f); |
| } |
| |
| public boolean canEncode(char ch) { |
| if (ch >= 0x2701 && ch <= 0x275e) { // direct map |
| return true; |
| } |
| if (ch >= 0x2761 && ch <= 0x27be) { |
| return (table[ch - 0x2761] != 0x00); |
| } |
| 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 >= 0x2761){ |
| da[dp++] = table[c - 0x2761]; // table lookup |
| } else { |
| da[dp++] = (byte)(c + 0x20 - 0x2700); // direct map |
| } |
| } |
| return CoderResult.UNDERFLOW; |
| } finally { |
| src.position(sp - src.arrayOffset()); |
| dst.position(dp - dst.arrayOffset()); |
| } |
| } |
| |
| private static byte[] table = { |
| (byte)0xa1, (byte)0xa2, (byte)0xa3, (byte)0xa4, |
| (byte)0xa5, (byte)0xa6, (byte)0xa7, |
| (byte)0x00, (byte)0x00, (byte)0x00, (byte)0x00, |
| (byte)0x00, (byte)0x00, (byte)0x00, (byte)0x00, |
| (byte)0x00, (byte)0x00, (byte)0x00, (byte)0x00, |
| (byte)0x00, (byte)0x00, (byte)0xb6, (byte)0xb7, |
| (byte)0xb8, (byte)0xb9, (byte)0xba, (byte)0xbb, |
| (byte)0xbc, (byte)0xbd, (byte)0xbe, (byte)0xbf, |
| (byte)0xc0, (byte)0xc1, (byte)0xc2, (byte)0xc3, |
| (byte)0xc4, (byte)0xc5, (byte)0xc6, (byte)0xc7, |
| (byte)0xc8, (byte)0xc9, (byte)0xca, (byte)0xcb, |
| (byte)0xcc, (byte)0xcd, (byte)0xce, (byte)0xcf, |
| (byte)0xd0, (byte)0xd1, (byte)0xd2, (byte)0xd3, |
| (byte)0xd4, (byte)0x00, (byte)0x00, (byte)0x00, |
| (byte)0xd8, (byte)0xd9, (byte)0xda, (byte)0xdb, |
| (byte)0xdc, (byte)0xdd, (byte)0xde, (byte)0x00, |
| (byte)0x00, (byte)0x00, (byte)0x00, (byte)0x00, |
| (byte)0x00, (byte)0x00, (byte)0x00, (byte)0x00, |
| (byte)0x00, (byte)0x00, (byte)0x00, (byte)0x00, |
| (byte)0x00, (byte)0x00, (byte)0x00, (byte)0x00, |
| (byte)0x00, (byte)0x00, (byte)0x00, (byte)0x00, |
| (byte)0x00, (byte)0x00, (byte)0x00, (byte)0x00, |
| (byte)0x00, (byte)0x00, (byte)0x00, (byte)0x00, |
| (byte)0x00, (byte)0x00, (byte)0x00}; |
| |
| /* The default implementation creates a decoder and we don't have one */ |
| public boolean isLegalReplacement(byte[] repl) { |
| return true; |
| } |
| } |
| } |