/* |
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* Copyright (c) 2002, 2011, 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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/* |
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*/ |
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package sun.nio.cs.ext; |
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import java.nio.charset.Charset; |
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import java.nio.CharBuffer; |
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import java.nio.ByteBuffer; |
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import java.nio.charset.CharsetDecoder; |
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import java.nio.charset.CharsetEncoder; |
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import java.nio.charset.CoderResult; |
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import sun.nio.cs.Surrogate; |
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import sun.nio.cs.HistoricallyNamedCharset; |
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public class ISCII91 extends Charset implements HistoricallyNamedCharset |
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{ |
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private static final char NUKTA_CHAR = '\u093c'; |
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private static final char HALANT_CHAR = '\u094d'; |
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private static final byte NO_CHAR = (byte)255; |
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public ISCII91() { |
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super("x-ISCII91", ExtendedCharsets.aliasesFor("x-ISCII91")); |
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} |
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public String historicalName() { |
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return "ISCII91"; |
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} |
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public boolean contains(Charset cs) { |
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return ((cs.name().equals("US-ASCII")) |
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|| (cs instanceof ISCII91)); |
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} |
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public CharsetDecoder newDecoder() { |
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return new Decoder(this); |
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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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private static final char[] directMapTable = { |
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'\u0000', // ascii character |
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'\u0001', // ascii character |
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'\u0002', // ascii character |
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'\u0003', // ascii character |
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'\u0004', // ascii character |
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'\u0005', // ascii character |
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'\u0006', // ascii character |
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'\u0007', // ascii character |
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'\u0008', // ascii character |
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'\u0009', // ascii character |
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'\012', // ascii character |
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'\u000b', // ascii character |
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'\u000c', // ascii character |
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'\015', // ascii character |
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'\u000e', // ascii character |
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'\u000f', // ascii character |
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'\u0010', // ascii character |
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'\u0011', // ascii character |
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'\u0012', // ascii character |
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'\u0013', // ascii character |
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'\u0014', // ascii character |
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'\u0015', // ascii character |
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'\u0016', // ascii character |
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'\u0017', // ascii character |
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'\u0018', // ascii character |
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'\u0019', // ascii character |
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'\u001a', // ascii character |
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'\u001b', // ascii character |
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'\u001c', // ascii character |
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'\u001d', // ascii character |
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'\u001e', // ascii character |
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'\u001f', // ascii character |
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'\u0020', // ascii character |
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'\u0021', // ascii character |
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'\u0022', // ascii character |
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'\u0023', // ascii character |
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'\u0024', // ascii character |
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'\u0025', // ascii character |
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'\u0026', // ascii character |
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(char)0x0027, // '\u0027' control -- ascii character |
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'\u0028', // ascii character |
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'\u0029', // ascii character |
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'\u002a', // ascii character |
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'\u002b', // ascii character |
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'\u002c', // ascii character |
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'\u002d', // ascii character |
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'\u002e', // ascii character |
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'\u002f', // ascii character |
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'\u0030', // ascii character |
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'\u0031', // ascii character |
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'\u0032', // ascii character |
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'\u0033', // ascii character |
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'\u0034', // ascii character |
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'\u0035', // ascii character |
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'\u0036', // ascii character |
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'\u0037', // ascii character |
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'\u0038', // ascii character |
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'\u0039', // ascii character |
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'\u003a', // ascii character |
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'\u003b', // ascii character |
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'\u003c', // ascii character |
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'\u003d', // ascii character |
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'\u003e', // ascii character |
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'\u003f', // ascii character |
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'\u0040', // ascii character |
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'\u0041', // ascii character |
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'\u0042', // ascii character |
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'\u0043', // ascii character |
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'\u0044', // ascii character |
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'\u0045', // ascii character |
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'\u0046', // ascii character |
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'\u0047', // ascii character |
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'\u0048', // ascii character |
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'\u0049', // ascii character |
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'\u004a', // ascii character |
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'\u004b', // ascii character |
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'\u004c', // ascii character |
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'\u004d', // ascii character |
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'\u004e', // ascii character |
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'\u004f', // ascii character |
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'\u0050', // ascii character |
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'\u0051', // ascii character |
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'\u0052', // ascii character |
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'\u0053', // ascii character |
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'\u0054', // ascii character |
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'\u0055', // ascii character |
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'\u0056', // ascii character |
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'\u0057', // ascii character |
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'\u0058', // ascii character |
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'\u0059', // ascii character |
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'\u005a', // ascii character |
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'\u005b', // ascii character |
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'\\',// '\u005c' -- ascii character |
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'\u005d', // ascii character |
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'\u005e', // ascii character |
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'\u005f', // ascii character |
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'\u0060', // ascii character |
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'\u0061', // ascii character |
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'\u0062', // ascii character |
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'\u0063', // ascii character |
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'\u0064', // ascii character |
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'\u0065', // ascii character |
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'\u0066', // ascii character |
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'\u0067', // ascii character |
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'\u0068', // ascii character |
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'\u0069', // ascii character |
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'\u006a', // ascii character |
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'\u006b', // ascii character |
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'\u006c', // ascii character |
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'\u006d', // ascii character |
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'\u006e', // ascii character |
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'\u006f', // ascii character |
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'\u0070', // ascii character |
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'\u0071', // ascii character |
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'\u0072', // ascii character |
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'\u0073', // ascii character |
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'\u0074', // ascii character |
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'\u0075', // ascii character |
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'\u0076', // ascii character |
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'\u0077', // ascii character |
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'\u0078', // ascii character |
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'\u0079', // ascii character |
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'\u007a', // ascii character |
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'\u007b', // ascii character |
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'\u007c', // ascii character |
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'\u007d', // ascii character |
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'\u007e', // ascii character |
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'\u007f', // ascii character |
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'\uffff', // unknown character |
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'\uffff', // unknown character |
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'\uffff', // unknown character |
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'\uffff', // unknown character |
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'\uffff', // unknown character |
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'\uffff', // unknown character |
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'\uffff', // unknown character |
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'\uffff', // unknown character |
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'\uffff', // unknown character |
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'\uffff', // unknown character |
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'\uffff', // unknown character |
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'\uffff', // unknown character |
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'\uffff', // unknown character |
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'\uffff', // unknown character |
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'\uffff', // unknown character |
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'\uffff', // unknown character |
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'\uffff', // unknown character |
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'\uffff', // unknown character |
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'\uffff', // unknown character |
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'\uffff', // unknown character |
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'\uffff', // unknown character |
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'\uffff', // unknown character |
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'\uffff', // unknown character |
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'\uffff', // unknown character |
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'\uffff', // unknown character |
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'\uffff', // unknown character |
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'\uffff', // unknown character |
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'\uffff', // unknown character |
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'\uffff', // unknown character |
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'\uffff', // unknown character |
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'\uffff', // unknown character |
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'\uffff', // unknown character |
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'\u0901', // a1 -- Vowel-modifier CHANDRABINDU |
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'\u0902', // a2 -- Vowel-modifier ANUSWAR |
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'\u0903', // a3 -- Vowel-modifier VISARG |
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'\u0905', // a4 -- Vowel A |
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'\u0906', // a5 -- Vowel AA |
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'\u0907', // a6 -- Vowel I |
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'\u0908', // a7 -- Vowel II |
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'\u0909', // a8 -- Vowel U |
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'\u090a', // a9 -- Vowel UU |
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'\u090b', // aa -- Vowel RI |
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'\u090e', // ab -- Vowel E ( Southern Scripts ) |
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'\u090f', // ac -- Vowel EY |
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'\u0910', // ad -- Vowel AI |
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'\u090d', // ae -- Vowel AYE ( Devanagari Script ) |
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'\u0912', // af -- Vowel O ( Southern Scripts ) |
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'\u0913', // b0 -- Vowel OW |
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'\u0914', // b1 -- Vowel AU |
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'\u0911', // b2 -- Vowel AWE ( Devanagari Script ) |
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'\u0915', // b3 -- Consonant KA |
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'\u0916', // b4 -- Consonant KHA |
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'\u0917', // b5 -- Consonant GA |
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'\u0918', // b6 -- Consonant GHA |
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'\u0919', // b7 -- Consonant NGA |
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'\u091a', // b8 -- Consonant CHA |
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'\u091b', // b9 -- Consonant CHHA |
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'\u091c', // ba -- Consonant JA |
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'\u091d', // bb -- Consonant JHA |
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'\u091e', // bc -- Consonant JNA |
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'\u091f', // bd -- Consonant Hard TA |
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'\u0920', // be -- Consonant Hard THA |
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'\u0921', // bf -- Consonant Hard DA |
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'\u0922', // c0 -- Consonant Hard DHA |
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'\u0923', // c1 -- Consonant Hard NA |
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'\u0924', // c2 -- Consonant Soft TA |
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'\u0925', // c3 -- Consonant Soft THA |
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'\u0926', // c4 -- Consonant Soft DA |
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'\u0927', // c5 -- Consonant Soft DHA |
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'\u0928', // c6 -- Consonant Soft NA |
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'\u0929', // c7 -- Consonant NA ( Tamil ) |
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'\u092a', // c8 -- Consonant PA |
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'\u092b', // c9 -- Consonant PHA |
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'\u092c', // ca -- Consonant BA |
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'\u092d', // cb -- Consonant BHA |
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'\u092e', // cc -- Consonant MA |
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'\u092f', // cd -- Consonant YA |
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'\u095f', // ce -- Consonant JYA ( Bengali, Assamese & Oriya ) |
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'\u0930', // cf -- Consonant RA |
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'\u0931', // d0 -- Consonant Hard RA ( Southern Scripts ) |
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'\u0932', // d1 -- Consonant LA |
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'\u0933', // d2 -- Consonant Hard LA |
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'\u0934', // d3 -- Consonant ZHA ( Tamil & Malayalam ) |
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'\u0935', // d4 -- Consonant VA |
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'\u0936', // d5 -- Consonant SHA |
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'\u0937', // d6 -- Consonant Hard SHA |
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'\u0938', // d7 -- Consonant SA |
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'\u0939', // d8 -- Consonant HA |
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'\u200d', // d9 -- Consonant INVISIBLE |
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'\u093e', // da -- Vowel Sign AA |
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'\u093f', // db -- Vowel Sign I |
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'\u0940', // dc -- Vowel Sign II |
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'\u0941', // dd -- Vowel Sign U |
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'\u0942', // de -- Vowel Sign UU |
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'\u0943', // df -- Vowel Sign RI |
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'\u0946', // e0 -- Vowel Sign E ( Southern Scripts ) |
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'\u0947', // e1 -- Vowel Sign EY |
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'\u0948', // e2 -- Vowel Sign AI |
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'\u0945', // e3 -- Vowel Sign AYE ( Devanagari Script ) |
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'\u094a', // e4 -- Vowel Sign O ( Southern Scripts ) |
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'\u094b', // e5 -- Vowel Sign OW |
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'\u094c', // e6 -- Vowel Sign AU |
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'\u0949', // e7 -- Vowel Sign AWE ( Devanagari Script ) |
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'\u094d', // e8 -- Vowel Omission Sign ( Halant ) |
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'\u093c', // e9 -- Diacritic Sign ( Nukta ) |
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'\u0964', // ea -- Full Stop ( Viram, Northern Scripts ) |
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'\uffff', // eb -- This position shall not be used |
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'\uffff', // ec -- This position shall not be used |
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'\uffff', // ed -- This position shall not be used |
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'\uffff', // ee -- This position shall not be used |
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'\ufffd', // ef -- Attribute Code ( ATR ) |
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'\ufffd', // f0 -- Extension Code ( EXT ) |
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'\u0966', // f1 -- Digit 0 |
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'\u0967', // f2 -- Digit 1 |
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'\u0968', // f3 -- Digit 2 |
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'\u0969', // f4 -- Digit 3 |
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'\u096a', // f5 -- Digit 4 |
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'\u096b', // f6 -- Digit 5 |
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'\u096c', // f7 -- Digit 6 |
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'\u096d', // f8 -- Digit 7 |
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'\u096e', // f9 -- Digit 8 |
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'\u096f', // fa -- Digit 9 |
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'\uffff', // fb -- This position shall not be used |
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'\uffff', // fc -- This position shall not be used |
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'\uffff', // fd -- This position shall not be used |
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'\uffff', // fe -- This position shall not be used |
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'\uffff' // ff -- This position shall not be used |
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}; //end of table definition |
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private static final byte[] encoderMappingTable = { |
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NO_CHAR,NO_CHAR, //0900 <reserved> |
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(byte)161,NO_CHAR, //0901 -- DEVANAGARI SIGN CANDRABINDU = anunasika |
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(byte)162,NO_CHAR, //0902 -- DEVANAGARI SIGN ANUSVARA = bindu |
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(byte)163,NO_CHAR, //0903 -- DEVANAGARI SIGN VISARGA |
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NO_CHAR,NO_CHAR, //0904 <reserved> |
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(byte)164,NO_CHAR, //0905 -- DEVANAGARI LETTER A |
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(byte)165,NO_CHAR, //0906 -- DEVANAGARI LETTER AA |
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(byte)166,NO_CHAR, //0907 -- DEVANAGARI LETTER I |
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(byte)167,NO_CHAR, //0908 -- DEVANAGARI LETTER II |
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(byte)168,NO_CHAR, //0909 -- DEVANAGARI LETTER U |
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(byte)169,NO_CHAR, //090a -- DEVANAGARI LETTER UU |
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(byte)170,NO_CHAR, //090b -- DEVANAGARI LETTER VOCALIC R |
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(byte)166,(byte)233, //090c -- DEVANAGARI LETTER VOVALIC L |
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(byte)174,NO_CHAR, //090d -- DEVANAGARI LETTER CANDRA E |
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(byte)171,NO_CHAR, //090e -- DEVANAGARI LETTER SHORT E |
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(byte)172,NO_CHAR, //090f -- DEVANAGARI LETTER E |
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(byte)173,NO_CHAR, //0910 -- DEVANAGARI LETTER AI |
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(byte)178,NO_CHAR, //0911 -- DEVANAGARI LETTER CANDRA O |
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(byte)175,NO_CHAR, //0912 -- DEVANAGARI LETTER SHORT O |
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(byte)176,NO_CHAR, //0913 -- DEVANAGARI LETTER O |
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(byte)177,NO_CHAR, //0914 -- DEVANAGARI LETTER AU |
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(byte)179,NO_CHAR, //0915 -- DEVANAGARI LETTER KA |
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(byte)180,NO_CHAR, //0916 -- DEVANAGARI LETTER KHA |
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(byte)181,NO_CHAR, //0917 -- DEVANAGARI LETTER GA |
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(byte)182,NO_CHAR, //0918 -- DEVANAGARI LETTER GHA |
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(byte)183,NO_CHAR, //0919 -- DEVANAGARI LETTER NGA |
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(byte)184,NO_CHAR, //091a -- DEVANAGARI LETTER CA |
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(byte)185,NO_CHAR, //091b -- DEVANAGARI LETTER CHA |
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(byte)186,NO_CHAR, //091c -- DEVANAGARI LETTER JA |
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(byte)187,NO_CHAR, //091d -- DEVANAGARI LETTER JHA |
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(byte)188,NO_CHAR, //091e -- DEVANAGARI LETTER NYA |
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(byte)189,NO_CHAR, //091f -- DEVANAGARI LETTER TTA |
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(byte)190,NO_CHAR, //0920 -- DEVANAGARI LETTER TTHA |
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(byte)191,NO_CHAR, //0921 -- DEVANAGARI LETTER DDA |
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(byte)192,NO_CHAR, //0922 -- DEVANAGARI LETTER DDHA |
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(byte)193,NO_CHAR, //0923 -- DEVANAGARI LETTER NNA |
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(byte)194,NO_CHAR, //0924 -- DEVANAGARI LETTER TA |
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(byte)195,NO_CHAR, //0925 -- DEVANAGARI LETTER THA |
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(byte)196,NO_CHAR, //0926 -- DEVANAGARI LETTER DA |
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(byte)197,NO_CHAR, //0927 -- DEVANAGARI LETTER DHA |
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(byte)198,NO_CHAR, //0928 -- DEVANAGARI LETTER NA |
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(byte)199,NO_CHAR, //0929 -- DEVANAGARI LETTER NNNA <=> 0928 + 093C |
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(byte)200,NO_CHAR, //092a -- DEVANAGARI LETTER PA |
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(byte)201,NO_CHAR, //092b -- DEVANAGARI LETTER PHA |
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(byte)202,NO_CHAR, //092c -- DEVANAGARI LETTER BA |
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(byte)203,NO_CHAR, //092d -- DEVANAGARI LETTER BHA |
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(byte)204,NO_CHAR, //092e -- DEVANAGARI LETTER MA |
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(byte)205,NO_CHAR, //092f -- DEVANAGARI LETTER YA |
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(byte)207,NO_CHAR, //0930 -- DEVANAGARI LETTER RA |
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(byte)208,NO_CHAR, //0931 -- DEVANAGARI LETTER RRA <=> 0930 + 093C |
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(byte)209,NO_CHAR, //0932 -- DEVANAGARI LETTER LA |
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(byte)210,NO_CHAR, //0933 -- DEVANAGARI LETTER LLA |
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(byte)211,NO_CHAR, //0934 -- DEVANAGARI LETTER LLLA <=> 0933 + 093C |
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(byte)212,NO_CHAR, //0935 -- DEVANAGARI LETTER VA |
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(byte)213,NO_CHAR, //0936 -- DEVANAGARI LETTER SHA |
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(byte)214,NO_CHAR, //0937 -- DEVANAGARI LETTER SSA |
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(byte)215,NO_CHAR, //0938 -- DEVANAGARI LETTER SA |
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(byte)216,NO_CHAR, //0939 -- DEVANAGARI LETTER HA |
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NO_CHAR,NO_CHAR, //093a <reserved> |
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NO_CHAR,NO_CHAR, //093b <reserved> |
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(byte)233,NO_CHAR, //093c -- DEVANAGARI SIGN NUKTA |
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(byte)234,(byte)233, //093d -- DEVANAGARI SIGN AVAGRAHA |
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(byte)218,NO_CHAR, //093e -- DEVANAGARI VOWEL SIGN AA |
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(byte)219,NO_CHAR, //093f -- DEVANAGARI VOWEL SIGN I |
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(byte)220,NO_CHAR, //0940 -- DEVANAGARI VOWEL SIGN II |
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(byte)221,NO_CHAR, //0941 -- DEVANAGARI VOWEL SIGN U |
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(byte)222,NO_CHAR, //0942 -- DEVANAGARI VOWEL SIGN UU |
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(byte)223,NO_CHAR, //0943 -- DEVANAGARI VOWEL SIGN VOCALIC R |
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(byte)223,(byte)233, //0944 -- DEVANAGARI VOWEL SIGN VOCALIC RR |
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(byte)227,NO_CHAR, //0945 -- DEVANAGARI VOWEL SIGN CANDRA E |
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(byte)224,NO_CHAR, //0946 -- DEVANAGARI VOWEL SIGN SHORT E |
|
(byte)225,NO_CHAR, //0947 -- DEVANAGARI VOWEL SIGN E |
|
(byte)226,NO_CHAR, //0948 -- DEVANAGARI VOWEL SIGN AI |
|
(byte)231,NO_CHAR, //0949 -- DEVANAGARI VOWEL SIGN CANDRA O |
|
(byte)228,NO_CHAR, //094a -- DEVANAGARI VOWEL SIGN SHORT O |
|
(byte)229,NO_CHAR, //094b -- DEVANAGARI VOWEL SIGN O |
|
(byte)230,NO_CHAR, //094c -- DEVANAGARI VOWEL SIGN AU |
|
(byte)232,NO_CHAR, //094d -- DEVANAGARI SIGN VIRAMA ( halant ) |
|
NO_CHAR,NO_CHAR, //094e <reserved> |
|
NO_CHAR,NO_CHAR, //094f <reserved> |
|
(byte)161,(byte)233, //0950 -- DEVANAGARI OM |
|
(byte)240,(byte)181, //0951 -- DEVANAGARI STRESS SIGN UDATTA |
|
(byte)240,(byte)184, //0952 -- DEVANAGARI STRESS SIGN ANUDATTA |
|
(byte)254,NO_CHAR, //0953 -- DEVANAGARI GRAVE ACCENT || MISSING |
|
(byte)254,NO_CHAR, //0954 -- DEVANAGARI ACUTE ACCENT || MISSING |
|
NO_CHAR,NO_CHAR, //0955 <reserved> |
|
NO_CHAR,NO_CHAR, //0956 <reserved> |
|
NO_CHAR,NO_CHAR, //0957 <reserved> |
|
(byte)179,(byte)233, //0958 -- DEVANAGARI LETTER QA <=> 0915 + 093C |
|
(byte)180,(byte)233, //0959 -- DEVANAGARI LETTER KHHA <=> 0916 + 093C |
|
(byte)181,(byte)233, //095a -- DEVANAGARI LETTER GHHA <=> 0917 + 093C |
|
(byte)186,(byte)233, //095b -- DEVANAGARI LETTER ZA <=> 091C + 093C |
|
(byte)191,(byte)233, //095c -- DEVANAGARI LETTER DDDHA <=> 0921 + 093C |
|
(byte)192,(byte)233, //095d -- DEVANAGARI LETTER RHA <=> 0922 + 093C |
|
(byte)201,(byte)233, //095e -- DEVANAGARI LETTER FA <=> 092B + 093C |
|
(byte)206,NO_CHAR, //095f -- DEVANAGARI LETTER YYA <=> 092F + 093C |
|
(byte)170,(byte)233, //0960 -- DEVANAGARI LETTER VOCALIC RR |
|
(byte)167,(byte)233, //0961 -- DEVANAGARI LETTER VOCALIC LL |
|
(byte)219,(byte)233, //0962 -- DEVANAGARI VOWEL SIGN VOCALIC L |
|
(byte)220,(byte)233, //0963 -- DEVANAGARI VOWEL SIGN VOCALIC LL |
|
(byte)234,NO_CHAR, //0964 -- DEVANAGARI DANDA ( phrase separator ) |
|
(byte)234,(byte)234, //0965 -- DEVANAGARI DOUBLE DANDA |
|
(byte)241,NO_CHAR, //0966 -- DEVANAGARI DIGIT ZERO |
|
(byte)242,NO_CHAR, //0967 -- DEVANAGARI DIGIT ONE |
|
(byte)243,NO_CHAR, //0968 -- DEVANAGARI DIGIT TWO |
|
(byte)244,NO_CHAR, //0969 -- DEVANAGARI DIGIT THREE |
|
(byte)245,NO_CHAR, //096a -- DEVANAGARI DIGIT FOUR |
|
(byte)246,NO_CHAR, //096b -- DEVANAGARI DIGIT FIVE |
|
(byte)247,NO_CHAR, //096c -- DEVANAGARI DIGIT SIX |
|
(byte)248,NO_CHAR, //096d -- DEVANAGARI DIGIT SEVEN |
|
(byte)249,NO_CHAR, //096e -- DEVANAGARI DIGIT EIGHT |
|
(byte)250,NO_CHAR, //096f -- DEVANAGARI DIGIT NINE |
|
(byte)240,(byte)191, //0970 -- DEVANAGARI ABBREVIATION SIGN |
|
NO_CHAR,NO_CHAR, //0971 -- reserved |
|
NO_CHAR,NO_CHAR, //0972 -- reserved |
|
NO_CHAR,NO_CHAR, //0973 -- reserved |
|
NO_CHAR,NO_CHAR, //0974 -- reserved |
|
NO_CHAR,NO_CHAR, //0975 -- reserved |
|
NO_CHAR,NO_CHAR, //0976 -- reserved |
|
NO_CHAR,NO_CHAR, //0977 -- reserved |
|
NO_CHAR,NO_CHAR, //0978 -- reserved |
|
NO_CHAR,NO_CHAR, //0979 -- reserved |
|
NO_CHAR,NO_CHAR, //097a -- reserved |
|
NO_CHAR,NO_CHAR, //097b -- reserved |
|
NO_CHAR,NO_CHAR, //097c -- reserved |
|
NO_CHAR,NO_CHAR, //097d -- reserved |
|
NO_CHAR,NO_CHAR, //097e -- reserved |
|
NO_CHAR,NO_CHAR //097f -- reserved |
|
}; //end of table definition |
|
private static class Decoder extends CharsetDecoder { |
|
private static final char ZWNJ_CHAR = '\u200c'; |
|
private static final char ZWJ_CHAR = '\u200d'; |
|
private static final char INVALID_CHAR = '\uffff'; |
|
private char contextChar = INVALID_CHAR; |
|
private boolean needFlushing = false; |
|
private Decoder(Charset cs) { |
|
super(cs, 1.0f, 1.0f); |
|
} |
|
protected CoderResult implFlush(CharBuffer out) { |
|
if(needFlushing) { |
|
if (out.remaining() < 1) { |
|
return CoderResult.OVERFLOW; |
|
} else { |
|
out.put(contextChar); |
|
} |
|
} |
|
contextChar = INVALID_CHAR; |
|
needFlushing = false; |
|
return CoderResult.UNDERFLOW; |
|
} |
|
/*Rules: |
|
* 1)ATR,EXT,following character to be replaced with '\ufffd' |
|
* 2)Halant + Halant => '\u094d' (Virama) + '\u200c'(ZWNJ) |
|
* 3)Halant + Nukta => '\u094d' (Virama) + '\u200d'(ZWJ) |
|
*/ |
|
private CoderResult decodeArrayLoop(ByteBuffer src, |
|
CharBuffer dst) |
|
{ |
|
byte[] sa = src.array(); |
|
int sp = src.arrayOffset() + src.position(); |
|
int sl = src.arrayOffset() + src.limit(); |
|
assert (sp <= sl); |
|
sp = (sp <= sl ? sp : sl); |
|
char[] 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) { |
|
int index = sa[sp]; |
|
index = ( index < 0 )? ( index + 255 ):index; |
|
char currentChar = directMapTable[index]; |
|
// if the contextChar is either ATR || EXT |
|
// set the output to '\ufffd' |
|
if(contextChar == '\ufffd') { |
|
if (dl - dp < 1) |
|
return CoderResult.OVERFLOW; |
|
da[dp++] = '\ufffd'; |
|
contextChar = INVALID_CHAR; |
|
needFlushing = false; |
|
sp++; |
|
continue; |
|
} |
|
switch(currentChar) { |
|
case '\u0901': |
|
case '\u0907': |
|
case '\u0908': |
|
case '\u090b': |
|
case '\u093f': |
|
case '\u0940': |
|
case '\u0943': |
|
case '\u0964': |
|
if(needFlushing) { |
|
if (dl - dp < 1) |
|
return CoderResult.OVERFLOW; |
|
da[dp++] = contextChar; |
|
contextChar = currentChar; |
|
sp++; |
|
continue; |
|
} |
|
contextChar = currentChar; |
|
needFlushing = true; |
|
sp++; |
|
continue; |
|
case NUKTA_CHAR: |
|
if (dl - dp < 1) |
|
return CoderResult.OVERFLOW; |
|
switch(contextChar) { |
|
case '\u0901': |
|
da[dp++] = '\u0950'; |
|
break; |
|
case '\u0907': |
|
da[dp++] = '\u090c'; |
|
break; |
|
case '\u0908': |
|
da[dp++] = '\u0961'; |
|
break; |
|
case '\u090b': |
|
da[dp++] = '\u0960'; |
|
break; |
|
case '\u093f': |
|
da[dp++] = '\u0962'; |
|
break; |
|
case '\u0940': |
|
da[dp++] = '\u0963'; |
|
break; |
|
case '\u0943': |
|
da[dp++] = '\u0944'; |
|
break; |
|
case '\u0964': |
|
da[dp++] = '\u093d'; |
|
break; |
|
case HALANT_CHAR: |
|
if(needFlushing) { |
|
da[dp++] = contextChar; |
|
contextChar = currentChar; |
|
sp++; |
|
continue; |
|
} |
|
da[dp++] = ZWJ_CHAR; |
|
break; |
|
default: |
|
if(needFlushing) { |
|
da[dp++] = contextChar; |
|
contextChar = currentChar; |
|
sp++; |
|
continue; |
|
} |
|
da[dp++] = NUKTA_CHAR; |
|
} |
|
break; |
|
case HALANT_CHAR: |
|
if (dl - dp < 1) |
|
return CoderResult.OVERFLOW; |
|
if(needFlushing) { |
|
da[dp++] = contextChar; |
|
contextChar = currentChar; |
|
sp++; |
|
continue; |
|
} |
|
if(contextChar == HALANT_CHAR) { |
|
da[dp++] = ZWNJ_CHAR; |
|
break; |
|
} |
|
da[dp++] = HALANT_CHAR; |
|
break; |
|
case INVALID_CHAR: |
|
if(needFlushing) { |
|
if (dl - dp < 1) |
|
return CoderResult.OVERFLOW; |
|
da[dp++] = contextChar; |
|
contextChar = currentChar; |
|
sp++; |
|
continue; |
|
} |
|
return CoderResult.unmappableForLength(1); |
|
default: |
|
if (dl - dp < 1) |
|
return CoderResult.OVERFLOW; |
|
if(needFlushing) { |
|
da[dp++] = contextChar; |
|
contextChar = currentChar; |
|
sp++; |
|
continue; |
|
} |
|
da[dp++] = currentChar; |
|
break; |
|
}//end switch |
|
contextChar = currentChar; |
|
needFlushing = false; |
|
sp++; |
|
} |
|
return CoderResult.UNDERFLOW; |
|
} finally { |
|
src.position(sp - src.arrayOffset()); |
|
dst.position(dp - dst.arrayOffset()); |
|
} |
|
} |
|
private CoderResult decodeBufferLoop(ByteBuffer src, |
|
CharBuffer dst) |
|
{ |
|
int mark = src.position(); |
|
try { |
|
while (src.hasRemaining()) { |
|
int index = src.get(); |
|
index = ( index < 0 )? ( index + 255 ):index; |
|
char currentChar = directMapTable[index]; |
|
// if the contextChar is either ATR || EXT |
|
// set the output to '\ufffd' |
|
if(contextChar == '\ufffd') { |
|
if (dst.remaining() < 1) |
|
return CoderResult.OVERFLOW; |
|
dst.put('\ufffd'); |
|
contextChar = INVALID_CHAR; |
|
needFlushing = false; |
|
mark++; |
|
continue; |
|
} |
|
switch(currentChar) { |
|
case '\u0901': |
|
case '\u0907': |
|
case '\u0908': |
|
case '\u090b': |
|
case '\u093f': |
|
case '\u0940': |
|
case '\u0943': |
|
case '\u0964': |
|
if(needFlushing) { |
|
if (dst.remaining() < 1) |
|
return CoderResult.OVERFLOW; |
|
dst.put(contextChar); |
|
contextChar = currentChar; |
|
mark++; |
|
continue; |
|
} |
|
contextChar = currentChar; |
|
needFlushing = true; |
|
mark++; |
|
continue; |
|
case NUKTA_CHAR: |
|
if (dst.remaining() < 1) |
|
return CoderResult.OVERFLOW; |
|
switch(contextChar) { |
|
case '\u0901': |
|
dst.put('\u0950'); |
|
break; |
|
case '\u0907': |
|
dst.put('\u090c'); |
|
break; |
|
case '\u0908': |
|
dst.put('\u0961'); |
|
break; |
|
case '\u090b': |
|
dst.put('\u0960'); |
|
break; |
|
case '\u093f': |
|
dst.put('\u0962'); |
|
break; |
|
case '\u0940': |
|
dst.put('\u0963'); |
|
break; |
|
case '\u0943': |
|
dst.put('\u0944'); |
|
break; |
|
case '\u0964': |
|
dst.put('\u093d'); |
|
break; |
|
case HALANT_CHAR: |
|
if(needFlushing) { |
|
dst.put(contextChar); |
|
contextChar = currentChar; |
|
mark++; |
|
continue; |
|
} |
|
dst.put(ZWJ_CHAR); |
|
break; |
|
default: |
|
if(needFlushing) { |
|
dst.put(contextChar); |
|
contextChar = currentChar; |
|
mark++; |
|
continue; |
|
} |
|
dst.put(NUKTA_CHAR); |
|
} |
|
break; |
|
case HALANT_CHAR: |
|
if (dst.remaining() < 1) |
|
return CoderResult.OVERFLOW; |
|
if(needFlushing) { |
|
dst.put(contextChar); |
|
contextChar = currentChar; |
|
mark++; |
|
continue; |
|
} |
|
if(contextChar == HALANT_CHAR) { |
|
dst.put(ZWNJ_CHAR); |
|
break; |
|
} |
|
dst.put(HALANT_CHAR); |
|
break; |
|
case INVALID_CHAR: |
|
if(needFlushing) { |
|
if (dst.remaining() < 1) |
|
return CoderResult.OVERFLOW; |
|
dst.put(contextChar); |
|
contextChar = currentChar; |
|
mark++; |
|
continue; |
|
} |
|
return CoderResult.unmappableForLength(1); |
|
default: |
|
if (dst.remaining() < 1) |
|
return CoderResult.OVERFLOW; |
|
if(needFlushing) { |
|
dst.put(contextChar); |
|
contextChar = currentChar; |
|
mark++; |
|
continue; |
|
} |
|
dst.put(currentChar); |
|
break; |
|
}//end switch |
|
contextChar = currentChar; |
|
needFlushing = false; |
|
mark++; |
|
} |
|
return CoderResult.UNDERFLOW; |
|
} finally { |
|
src.position(mark); |
|
} |
|
} |
|
protected CoderResult decodeLoop(ByteBuffer src, |
|
CharBuffer dst) |
|
{ |
|
if (src.hasArray() && dst.hasArray()) |
|
return decodeArrayLoop(src, dst); |
|
else |
|
return decodeBufferLoop(src, dst); |
|
} |
|
} |
|
private static class Encoder extends CharsetEncoder { |
|
private static final byte NO_CHAR = (byte)255; |
|
//private static CharToByteISCII91 c2b = new CharToByteISCII91(); |
|
//private static final byte[] directMapTable = c2b.getISCIIEncoderMap(); |
|
private final Surrogate.Parser sgp = new Surrogate.Parser(); |
|
private Encoder(Charset cs) { |
|
super(cs, 2.0f, 2.0f); |
|
} |
|
public boolean canEncode(char ch) { |
|
//check for Devanagari range,ZWJ,ZWNJ and ASCII range. |
|
return ((ch >= '\u0900' && ch <= '\u097f' && |
|
encoderMappingTable[2*(ch-'\u0900')] != NO_CHAR) || |
|
(ch == '\u200d') || |
|
(ch == '\u200c') || |
|
(ch <= '\u007f')); |
|
} |
|
private CoderResult encodeArrayLoop(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); |
|
int outputSize = 0; |
|
try { |
|
char inputChar; |
|
while (sp < sl) { |
|
int index = Integer.MIN_VALUE; |
|
inputChar = sa[sp]; |
|
if (inputChar >= 0x0000 && inputChar <= 0x007f) { |
|
if (dl - dp < 1) |
|
return CoderResult.OVERFLOW; |
|
da[dp++] = (byte) inputChar; |
|
sp++; |
|
continue; |
|
} |
|
// if inputChar == ZWJ replace it with halant |
|
// if inputChar == ZWNJ replace it with Nukta |
|
if (inputChar == 0x200c) { |
|
inputChar = HALANT_CHAR; |
|
} |
|
else if (inputChar == 0x200d) { |
|
inputChar = NUKTA_CHAR; |
|
} |
|
if (inputChar >= 0x0900 && inputChar <= 0x097f) { |
|
index = ((int)(inputChar) - 0x0900)*2; |
|
} |
|
if (Character.isSurrogate(inputChar)) { |
|
if (sgp.parse(inputChar, sa, sp, sl) < 0) |
|
return sgp.error(); |
|
return sgp.unmappableResult(); |
|
} |
|
if (index == Integer.MIN_VALUE || |
|
encoderMappingTable[index] == NO_CHAR) { |
|
return CoderResult.unmappableForLength(1); |
|
} else { |
|
if(encoderMappingTable[index + 1] == NO_CHAR) { |
|
if(dl - dp < 1) |
|
return CoderResult.OVERFLOW; |
|
da[dp++] = encoderMappingTable[index]; |
|
} else { |
|
if(dl - dp < 2) |
|
return CoderResult.OVERFLOW; |
|
da[dp++] = encoderMappingTable[index]; |
|
da[dp++] = encoderMappingTable[index + 1]; |
|
} |
|
sp++; |
|
} |
|
} |
|
return CoderResult.UNDERFLOW; |
|
} finally { |
|
src.position(sp - src.arrayOffset()); |
|
dst.position(dp - dst.arrayOffset()); |
|
} |
|
} |
|
private CoderResult encodeBufferLoop(CharBuffer src, |
|
ByteBuffer dst) |
|
{ |
|
int mark = src.position(); |
|
try { |
|
char inputChar; |
|
while (src.hasRemaining()) { |
|
int index = Integer.MIN_VALUE; |
|
inputChar = src.get(); |
|
if (inputChar >= 0x0000 && inputChar <= 0x007f) { |
|
if (dst.remaining() < 1) |
|
return CoderResult.OVERFLOW; |
|
dst.put((byte) inputChar); |
|
mark++; |
|
continue; |
|
} |
|
// if inputChar == ZWJ replace it with halant |
|
// if inputChar == ZWNJ replace it with Nukta |
|
if (inputChar == 0x200c) { |
|
inputChar = HALANT_CHAR; |
|
} |
|
else if (inputChar == 0x200d) { |
|
inputChar = NUKTA_CHAR; |
|
} |
|
if (inputChar >= 0x0900 && inputChar <= 0x097f) { |
|
index = ((int)(inputChar) - 0x0900)*2; |
|
} |
|
if (Character.isSurrogate(inputChar)) { |
|
if (sgp.parse(inputChar, src) < 0) |
|
return sgp.error(); |
|
return sgp.unmappableResult(); |
|
} |
|
if (index == Integer.MIN_VALUE || |
|
encoderMappingTable[index] == NO_CHAR) { |
|
return CoderResult.unmappableForLength(1); |
|
} else { |
|
if(encoderMappingTable[index + 1] == NO_CHAR) { |
|
if(dst.remaining() < 1) |
|
return CoderResult.OVERFLOW; |
|
dst.put(encoderMappingTable[index]); |
|
} else { |
|
if(dst.remaining() < 2) |
|
return CoderResult.OVERFLOW; |
|
dst.put(encoderMappingTable[index]); |
|
dst.put(encoderMappingTable[index + 1]); |
|
} |
|
} |
|
mark++; |
|
} |
|
return CoderResult.UNDERFLOW; |
|
} finally { |
|
src.position(mark); |
|
} |
|
} |
|
protected CoderResult encodeLoop(CharBuffer src, |
|
ByteBuffer dst) |
|
{ |
|
if (src.hasArray() && dst.hasArray()) |
|
return encodeArrayLoop(src, dst); |
|
else |
|
return encodeBufferLoop(src, dst); |
|
} |
|
} |
|
} |