Java example source code file (ISCII91.java)
The ISCII91.java Java example source code
/*
* 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;
}
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);
}
}
}
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