/*

 * Copyright (c) 2002, 2011, 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.nio.cs.ext;

import java.nio.charset.Charset;

import java.nio.CharBuffer;

import java.nio.ByteBuffer;

import java.nio.charset.CharsetDecoder;

import java.nio.charset.CharsetEncoder;

import java.nio.charset.CoderResult;

import sun.nio.cs.Surrogate;

import sun.nio.cs.HistoricallyNamedCharset;

public class ISCII91 extends Charset implements HistoricallyNamedCharset

{

    private static final char NUKTA_CHAR = '\u093c';

    private static final char HALANT_CHAR = '\u094d';

    private static final byte NO_CHAR = (byte)255;

    public ISCII91() {

        super("x-ISCII91", ExtendedCharsets.aliasesFor("x-ISCII91"));

    }

    public String historicalName() {

        return "ISCII91";

    }

    public boolean contains(Charset cs) {

        return ((cs.name().equals("US-ASCII"))

                || (cs instanceof ISCII91));

    }

    public CharsetDecoder newDecoder() {

        return new Decoder(this);

    }

    public CharsetEncoder newEncoder() {

        return new Encoder(this);

    }

    private static final char[] directMapTable = {

        '\u0000', // ascii character

        '\u0001', // ascii character

        '\u0002', // ascii character

        '\u0003', // ascii character

        '\u0004', // ascii character

        '\u0005', // ascii character

        '\u0006', // ascii character

        '\u0007', // ascii character

        '\u0008', // ascii character

        '\u0009', // ascii character

        '\012', // ascii character

        '\u000b', // ascii character

        '\u000c', // ascii character

        '\015', // ascii character

        '\u000e', // ascii character

        '\u000f', // ascii character

        '\u0010', // ascii character

        '\u0011', // ascii character

        '\u0012', // ascii character

        '\u0013', // ascii character

        '\u0014', // ascii character

        '\u0015', // ascii character

        '\u0016', // ascii character

        '\u0017', // ascii character

        '\u0018', // ascii character

        '\u0019', // ascii character

        '\u001a', // ascii character

        '\u001b', // ascii character

        '\u001c', // ascii character

        '\u001d', // ascii character

        '\u001e', // ascii character

        '\u001f', // ascii character

        '\u0020', // ascii character

        '\u0021', // ascii character

        '\u0022', // ascii character

        '\u0023', // ascii character

        '\u0024', // ascii character

        '\u0025', // ascii character

        '\u0026', // ascii character

        (char)0x0027, // '\u0027' control -- ascii character

        '\u0028', // ascii character

        '\u0029', // ascii character

        '\u002a', // ascii character

        '\u002b', // ascii character

        '\u002c', // ascii character

        '\u002d', // ascii character

        '\u002e', // ascii character

        '\u002f', // ascii character

        '\u0030', // ascii character

        '\u0031', // ascii character

        '\u0032', // ascii character

        '\u0033', // ascii character

        '\u0034', // ascii character

        '\u0035', // ascii character

        '\u0036', // ascii character

        '\u0037', // ascii character

        '\u0038', // ascii character

        '\u0039', // ascii character

        '\u003a', // ascii character

        '\u003b', // ascii character

        '\u003c', // ascii character

        '\u003d', // ascii character

        '\u003e', // ascii character

        '\u003f', // ascii character

        '\u0040', // ascii character

        '\u0041', // ascii character

        '\u0042', // ascii character

        '\u0043', // ascii character

        '\u0044', // ascii character

        '\u0045', // ascii character

        '\u0046', // ascii character

        '\u0047', // ascii character

        '\u0048', // ascii character

        '\u0049', // ascii character

        '\u004a', // ascii character

        '\u004b', // ascii character

        '\u004c', // ascii character

        '\u004d', // ascii character

        '\u004e', // ascii character

        '\u004f', // ascii character

        '\u0050', // ascii character

        '\u0051', // ascii character

        '\u0052', // ascii character

        '\u0053', // ascii character

        '\u0054', // ascii character

        '\u0055', // ascii character

        '\u0056', // ascii character

        '\u0057', // ascii character

        '\u0058', // ascii character

        '\u0059', // ascii character

        '\u005a', // ascii character

        '\u005b', // ascii character

        '\\',// '\u005c' -- ascii character

        '\u005d', // ascii character

        '\u005e', // ascii character

        '\u005f', // ascii character

        '\u0060', // ascii character

        '\u0061', // ascii character

        '\u0062', // ascii character

        '\u0063', // ascii character

        '\u0064', // ascii character

        '\u0065', // ascii character

        '\u0066', // ascii character

        '\u0067', // ascii character

        '\u0068', // ascii character

        '\u0069', // ascii character

        '\u006a', // ascii character

        '\u006b', // ascii character

        '\u006c', // ascii character

        '\u006d', // ascii character

        '\u006e', // ascii character

        '\u006f', // ascii character

        '\u0070', // ascii character

        '\u0071', // ascii character

        '\u0072', // ascii character

        '\u0073', // ascii character

        '\u0074', // ascii character

        '\u0075', // ascii character

        '\u0076', // ascii character

        '\u0077', // ascii character

        '\u0078', // ascii character

        '\u0079', // ascii character

        '\u007a', // ascii character

        '\u007b', // ascii character

        '\u007c', // ascii character

        '\u007d', // ascii character

        '\u007e', // ascii character

        '\u007f', // ascii character

        '\uffff', // unknown character

        '\uffff', // unknown character

        '\uffff', // unknown character

        '\uffff', // unknown character

        '\uffff', // unknown character

        '\uffff', // unknown character

        '\uffff', // unknown character

        '\uffff', // unknown character

        '\uffff', // unknown character

        '\uffff', // unknown character

        '\uffff', // unknown character

        '\uffff', // unknown character

        '\uffff', // unknown character

        '\uffff', // unknown character

        '\uffff', // unknown character

        '\uffff', // unknown character

        '\uffff', // unknown character

        '\uffff', // unknown character

        '\uffff', // unknown character

        '\uffff', // unknown character

        '\uffff', // unknown character

        '\uffff', // unknown character

        '\uffff', // unknown character

        '\uffff', // unknown character

        '\uffff', // unknown character

        '\uffff', // unknown character

        '\uffff', // unknown character

        '\uffff', // unknown character

        '\uffff', // unknown character

        '\uffff', // unknown character

        '\uffff', // unknown character

        '\uffff', // unknown character

        '\u0901', // a1 -- Vowel-modifier CHANDRABINDU

        '\u0902', // a2 -- Vowel-modifier ANUSWAR

        '\u0903', // a3 -- Vowel-modifier VISARG

        '\u0905', // a4 -- Vowel A

        '\u0906', // a5 -- Vowel AA

        '\u0907', // a6 -- Vowel I

        '\u0908', // a7 -- Vowel II

        '\u0909', // a8 -- Vowel U

        '\u090a', // a9 -- Vowel UU

        '\u090b', // aa -- Vowel RI

        '\u090e', // ab -- Vowel E ( Southern Scripts )

        '\u090f', // ac -- Vowel EY

        '\u0910', // ad -- Vowel AI

        '\u090d', // ae -- Vowel AYE ( Devanagari Script )

        '\u0912', // af -- Vowel O ( Southern Scripts )

        '\u0913', // b0 -- Vowel OW

        '\u0914', // b1 -- Vowel AU

        '\u0911', // b2 -- Vowel AWE ( Devanagari Script )

        '\u0915', // b3 -- Consonant KA

        '\u0916', // b4 -- Consonant KHA

        '\u0917', // b5 -- Consonant GA

        '\u0918', // b6 -- Consonant GHA

        '\u0919', // b7 -- Consonant NGA

        '\u091a', // b8 -- Consonant CHA

        '\u091b', // b9 -- Consonant CHHA

        '\u091c', // ba -- Consonant JA

        '\u091d', // bb -- Consonant JHA

        '\u091e', // bc -- Consonant JNA

        '\u091f', // bd -- Consonant Hard TA

        '\u0920', // be -- Consonant Hard THA

        '\u0921', // bf -- Consonant Hard DA

        '\u0922', // c0 -- Consonant Hard DHA

        '\u0923', // c1 -- Consonant Hard NA

        '\u0924', // c2 -- Consonant Soft TA

        '\u0925', // c3 -- Consonant Soft THA

        '\u0926', // c4 -- Consonant Soft DA

        '\u0927', // c5 -- Consonant Soft DHA

        '\u0928', // c6 -- Consonant Soft NA

        '\u0929', // c7 -- Consonant NA ( Tamil )

        '\u092a', // c8 -- Consonant PA

        '\u092b', // c9 -- Consonant PHA

        '\u092c', // ca -- Consonant BA

        '\u092d', // cb -- Consonant BHA

        '\u092e', // cc -- Consonant MA

        '\u092f', // cd -- Consonant YA

        '\u095f', // ce -- Consonant JYA ( Bengali, Assamese & Oriya )

        '\u0930', // cf -- Consonant RA

        '\u0931', // d0 -- Consonant Hard RA ( Southern Scripts )

        '\u0932', // d1 -- Consonant LA

        '\u0933', // d2 -- Consonant Hard LA

        '\u0934', // d3 -- Consonant ZHA ( Tamil & Malayalam )

        '\u0935', // d4 -- Consonant VA

        '\u0936', // d5 -- Consonant SHA

        '\u0937', // d6 -- Consonant Hard SHA

        '\u0938', // d7 -- Consonant SA

        '\u0939', // d8 -- Consonant HA

        '\u200d', // d9 -- Consonant INVISIBLE

        '\u093e', // da -- Vowel Sign AA

        '\u093f', // db -- Vowel Sign I

        '\u0940', // dc -- Vowel Sign II

        '\u0941', // dd -- Vowel Sign U

        '\u0942', // de -- Vowel Sign UU

        '\u0943', // df -- Vowel Sign RI

        '\u0946', // e0 -- Vowel Sign E ( Southern Scripts )

        '\u0947', // e1 -- Vowel Sign EY

        '\u0948', // e2 -- Vowel Sign AI

        '\u0945', // e3 -- Vowel Sign AYE ( Devanagari Script )

        '\u094a', // e4 -- Vowel Sign O ( Southern Scripts )

        '\u094b', // e5 -- Vowel Sign OW

        '\u094c', // e6 -- Vowel Sign AU

        '\u0949', // e7 -- Vowel Sign AWE ( Devanagari Script )

        '\u094d', // e8 -- Vowel Omission Sign ( Halant )

        '\u093c', // e9 -- Diacritic Sign ( Nukta )

        '\u0964', // ea -- Full Stop ( Viram, Northern Scripts )

        '\uffff', // eb -- This position shall not be used

        '\uffff', // ec -- This position shall not be used

        '\uffff', // ed -- This position shall not be used

        '\uffff', // ee -- This position shall not be used

        '\ufffd', // ef -- Attribute Code ( ATR )

        '\ufffd', // f0 -- Extension Code ( EXT )

        '\u0966', // f1 -- Digit 0

        '\u0967', // f2 -- Digit 1

        '\u0968', // f3 -- Digit 2

        '\u0969', // f4 -- Digit 3

        '\u096a', // f5 -- Digit 4

        '\u096b', // f6 -- Digit 5

        '\u096c', // f7 -- Digit 6

        '\u096d', // f8 -- Digit 7

        '\u096e', // f9 -- Digit 8

        '\u096f', // fa -- Digit 9

        '\uffff', // fb -- This position shall not be used

        '\uffff', // fc -- This position shall not be used

        '\uffff', // fd -- This position shall not be used

        '\uffff', // fe -- This position shall not be used

        '\uffff'  // ff -- This position shall not be used

    }; //end of table definition

    private static final byte[] encoderMappingTable = {

    NO_CHAR,NO_CHAR, //0900 <reserved>

    (byte)161,NO_CHAR, //0901 -- DEVANAGARI SIGN CANDRABINDU = anunasika

    (byte)162,NO_CHAR, //0902 -- DEVANAGARI SIGN ANUSVARA = bindu

    (byte)163,NO_CHAR, //0903 -- DEVANAGARI SIGN VISARGA

    NO_CHAR,NO_CHAR, //0904 <reserved>

    (byte)164,NO_CHAR, //0905 -- DEVANAGARI LETTER A

    (byte)165,NO_CHAR, //0906 -- DEVANAGARI LETTER AA

    (byte)166,NO_CHAR, //0907 -- DEVANAGARI LETTER I

    (byte)167,NO_CHAR, //0908 -- DEVANAGARI LETTER II

    (byte)168,NO_CHAR, //0909 -- DEVANAGARI LETTER U

    (byte)169,NO_CHAR, //090a -- DEVANAGARI LETTER UU

    (byte)170,NO_CHAR, //090b -- DEVANAGARI LETTER VOCALIC R

    (byte)166,(byte)233, //090c -- DEVANAGARI LETTER VOVALIC L

    (byte)174,NO_CHAR, //090d -- DEVANAGARI LETTER CANDRA E

    (byte)171,NO_CHAR, //090e -- DEVANAGARI LETTER SHORT E

    (byte)172,NO_CHAR, //090f -- DEVANAGARI LETTER E

    (byte)173,NO_CHAR, //0910 -- DEVANAGARI LETTER AI

    (byte)178,NO_CHAR, //0911 -- DEVANAGARI LETTER CANDRA O

    (byte)175,NO_CHAR, //0912 -- DEVANAGARI LETTER SHORT O

    (byte)176,NO_CHAR, //0913 -- DEVANAGARI LETTER O

    (byte)177,NO_CHAR, //0914 -- DEVANAGARI LETTER AU

    (byte)179,NO_CHAR, //0915 -- DEVANAGARI LETTER KA

    (byte)180,NO_CHAR, //0916 -- DEVANAGARI LETTER KHA

    (byte)181,NO_CHAR, //0917 -- DEVANAGARI LETTER GA

    (byte)182,NO_CHAR, //0918 -- DEVANAGARI LETTER GHA

    (byte)183,NO_CHAR, //0919 -- DEVANAGARI LETTER NGA

    (byte)184,NO_CHAR, //091a -- DEVANAGARI LETTER CA

    (byte)185,NO_CHAR, //091b -- DEVANAGARI LETTER CHA

    (byte)186,NO_CHAR, //091c -- DEVANAGARI LETTER JA

    (byte)187,NO_CHAR, //091d -- DEVANAGARI LETTER JHA

    (byte)188,NO_CHAR, //091e -- DEVANAGARI LETTER NYA

    (byte)189,NO_CHAR, //091f -- DEVANAGARI LETTER TTA

    (byte)190,NO_CHAR, //0920 -- DEVANAGARI LETTER TTHA

    (byte)191,NO_CHAR, //0921 -- DEVANAGARI LETTER DDA

    (byte)192,NO_CHAR, //0922 -- DEVANAGARI LETTER DDHA

    (byte)193,NO_CHAR, //0923 -- DEVANAGARI LETTER NNA

    (byte)194,NO_CHAR, //0924 -- DEVANAGARI LETTER TA

    (byte)195,NO_CHAR, //0925 -- DEVANAGARI LETTER THA

    (byte)196,NO_CHAR, //0926 -- DEVANAGARI LETTER DA

    (byte)197,NO_CHAR, //0927 -- DEVANAGARI LETTER DHA

    (byte)198,NO_CHAR, //0928 -- DEVANAGARI LETTER NA

    (byte)199,NO_CHAR, //0929 -- DEVANAGARI LETTER NNNA <=> 0928 + 093C

    (byte)200,NO_CHAR, //092a -- DEVANAGARI LETTER PA

    (byte)201,NO_CHAR, //092b -- DEVANAGARI LETTER PHA

    (byte)202,NO_CHAR, //092c -- DEVANAGARI LETTER BA

    (byte)203,NO_CHAR, //092d -- DEVANAGARI LETTER BHA

    (byte)204,NO_CHAR, //092e -- DEVANAGARI LETTER MA

    (byte)205,NO_CHAR, //092f -- DEVANAGARI LETTER YA

    (byte)207,NO_CHAR, //0930 -- DEVANAGARI LETTER RA

    (byte)208,NO_CHAR, //0931 -- DEVANAGARI LETTER RRA <=> 0930 + 093C

    (byte)209,NO_CHAR, //0932 -- DEVANAGARI LETTER LA

    (byte)210,NO_CHAR, //0933 -- DEVANAGARI LETTER LLA

    (byte)211,NO_CHAR, //0934 -- DEVANAGARI LETTER LLLA <=> 0933 + 093C

    (byte)212,NO_CHAR, //0935 -- DEVANAGARI LETTER VA

    (byte)213,NO_CHAR, //0936 -- DEVANAGARI LETTER SHA

    (byte)214,NO_CHAR, //0937 -- DEVANAGARI LETTER SSA

    (byte)215,NO_CHAR, //0938 -- DEVANAGARI LETTER SA

    (byte)216,NO_CHAR, //0939 -- DEVANAGARI LETTER HA

    NO_CHAR,NO_CHAR, //093a <reserved>

    NO_CHAR,NO_CHAR, //093b <reserved>

    (byte)233,NO_CHAR, //093c -- DEVANAGARI SIGN NUKTA

    (byte)234,(byte)233, //093d -- DEVANAGARI SIGN AVAGRAHA

    (byte)218,NO_CHAR, //093e -- DEVANAGARI VOWEL SIGN AA

    (byte)219,NO_CHAR, //093f -- DEVANAGARI VOWEL SIGN I

    (byte)220,NO_CHAR, //0940 -- DEVANAGARI VOWEL SIGN II

    (byte)221,NO_CHAR, //0941 -- DEVANAGARI VOWEL SIGN U

    (byte)222,NO_CHAR, //0942 -- DEVANAGARI VOWEL SIGN UU

    (byte)223,NO_CHAR, //0943 -- DEVANAGARI VOWEL SIGN VOCALIC R

    (byte)223,(byte)233, //0944 -- DEVANAGARI VOWEL SIGN VOCALIC RR

    (byte)227,NO_CHAR, //0945 -- DEVANAGARI VOWEL SIGN CANDRA E

    (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;

                    }