1/* 2 * Copyright (c) 2002, 2011, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26/* 27 */ 28 29 30package sun.nio.cs.ext; 31 32import java.nio.charset.Charset; 33import java.nio.CharBuffer; 34import java.nio.ByteBuffer; 35import java.nio.charset.CharsetDecoder; 36import java.nio.charset.CharsetEncoder; 37import java.nio.charset.CoderResult; 38import sun.nio.cs.Surrogate; 39import sun.nio.cs.HistoricallyNamedCharset; 40 41public class ISCII91 extends Charset implements HistoricallyNamedCharset 42{ 43 private static final char NUKTA_CHAR = '\u093c'; 44 private static final char HALANT_CHAR = '\u094d'; 45 private static final byte NO_CHAR = (byte)255; 46 47 public ISCII91() { 48 super("x-ISCII91", ExtendedCharsets.aliasesFor("x-ISCII91")); 49 } 50 51 public String historicalName() { 52 return "ISCII91"; 53 } 54 55 public boolean contains(Charset cs) { 56 return ((cs.name().equals("US-ASCII")) 57 || (cs instanceof ISCII91)); 58 } 59 60 public CharsetDecoder newDecoder() { 61 return new Decoder(this); 62 } 63 64 public CharsetEncoder newEncoder() { 65 return new Encoder(this); 66 } 67 68 private static final char[] directMapTable = { 69 '\u0000', // ascii character 70 '\u0001', // ascii character 71 '\u0002', // ascii character 72 '\u0003', // ascii character 73 '\u0004', // ascii character 74 '\u0005', // ascii character 75 '\u0006', // ascii character 76 '\u0007', // ascii character 77 '\u0008', // ascii character 78 '\u0009', // ascii character 79 '\012', // ascii character 80 '\u000b', // ascii character 81 '\u000c', // ascii character 82 '\015', // ascii character 83 '\u000e', // ascii character 84 '\u000f', // ascii character 85 '\u0010', // ascii character 86 '\u0011', // ascii character 87 '\u0012', // ascii character 88 '\u0013', // ascii character 89 '\u0014', // ascii character 90 '\u0015', // ascii character 91 '\u0016', // ascii character 92 '\u0017', // ascii character 93 '\u0018', // ascii character 94 '\u0019', // ascii character 95 '\u001a', // ascii character 96 '\u001b', // ascii character 97 '\u001c', // ascii character 98 '\u001d', // ascii character 99 '\u001e', // ascii character 100 '\u001f', // ascii character 101 '\u0020', // ascii character 102 '\u0021', // ascii character 103 '\u0022', // ascii character 104 '\u0023', // ascii character 105 '\u0024', // ascii character 106 '\u0025', // ascii character 107 '\u0026', // ascii character 108 (char)0x0027, // '\u0027' control -- ascii character 109 '\u0028', // ascii character 110 '\u0029', // ascii character 111 '\u002a', // ascii character 112 '\u002b', // ascii character 113 '\u002c', // ascii character 114 '\u002d', // ascii character 115 '\u002e', // ascii character 116 '\u002f', // ascii character 117 '\u0030', // ascii character 118 '\u0031', // ascii character 119 '\u0032', // ascii character 120 '\u0033', // ascii character 121 '\u0034', // ascii character 122 '\u0035', // ascii character 123 '\u0036', // ascii character 124 '\u0037', // ascii character 125 '\u0038', // ascii character 126 '\u0039', // ascii character 127 '\u003a', // ascii character 128 '\u003b', // ascii character 129 '\u003c', // ascii character 130 '\u003d', // ascii character 131 '\u003e', // ascii character 132 '\u003f', // ascii character 133 '\u0040', // ascii character 134 '\u0041', // ascii character 135 '\u0042', // ascii character 136 '\u0043', // ascii character 137 '\u0044', // ascii character 138 '\u0045', // ascii character 139 '\u0046', // ascii character 140 '\u0047', // ascii character 141 '\u0048', // ascii character 142 '\u0049', // ascii character 143 '\u004a', // ascii character 144 '\u004b', // ascii character 145 '\u004c', // ascii character 146 '\u004d', // ascii character 147 '\u004e', // ascii character 148 '\u004f', // ascii character 149 '\u0050', // ascii character 150 '\u0051', // ascii character 151 '\u0052', // ascii character 152 '\u0053', // ascii character 153 '\u0054', // ascii character 154 '\u0055', // ascii character 155 '\u0056', // ascii character 156 '\u0057', // ascii character 157 '\u0058', // ascii character 158 '\u0059', // ascii character 159 '\u005a', // ascii character 160 '\u005b', // ascii character 161 '\\',// '\u005c' -- ascii character 162 '\u005d', // ascii character 163 '\u005e', // ascii character 164 '\u005f', // ascii character 165 '\u0060', // ascii character 166 '\u0061', // ascii character 167 '\u0062', // ascii character 168 '\u0063', // ascii character 169 '\u0064', // ascii character 170 '\u0065', // ascii character 171 '\u0066', // ascii character 172 '\u0067', // ascii character 173 '\u0068', // ascii character 174 '\u0069', // ascii character 175 '\u006a', // ascii character 176 '\u006b', // ascii character 177 '\u006c', // ascii character 178 '\u006d', // ascii character 179 '\u006e', // ascii character 180 '\u006f', // ascii character 181 '\u0070', // ascii character 182 '\u0071', // ascii character 183 '\u0072', // ascii character 184 '\u0073', // ascii character 185 '\u0074', // ascii character 186 '\u0075', // ascii character 187 '\u0076', // ascii character 188 '\u0077', // ascii character 189 '\u0078', // ascii character 190 '\u0079', // ascii character 191 '\u007a', // ascii character 192 '\u007b', // ascii character 193 '\u007c', // ascii character 194 '\u007d', // ascii character 195 '\u007e', // ascii character 196 '\u007f', // ascii character 197 '\uffff', // unknown character 198 '\uffff', // unknown character 199 '\uffff', // unknown character 200 '\uffff', // unknown character 201 '\uffff', // unknown character 202 '\uffff', // unknown character 203 '\uffff', // unknown character 204 '\uffff', // unknown character 205 '\uffff', // unknown character 206 '\uffff', // unknown character 207 '\uffff', // unknown character 208 '\uffff', // unknown character 209 '\uffff', // unknown character 210 '\uffff', // unknown character 211 '\uffff', // unknown character 212 '\uffff', // unknown character 213 '\uffff', // unknown character 214 '\uffff', // unknown character 215 '\uffff', // unknown character 216 '\uffff', // unknown character 217 '\uffff', // unknown character 218 '\uffff', // unknown character 219 '\uffff', // unknown character 220 '\uffff', // unknown character 221 '\uffff', // unknown character 222 '\uffff', // unknown character 223 '\uffff', // unknown character 224 '\uffff', // unknown character 225 '\uffff', // unknown character 226 '\uffff', // unknown character 227 '\uffff', // unknown character 228 '\uffff', // unknown character 229 '\u0901', // a1 -- Vowel-modifier CHANDRABINDU 230 '\u0902', // a2 -- Vowel-modifier ANUSWAR 231 '\u0903', // a3 -- Vowel-modifier VISARG 232 233 '\u0905', // a4 -- Vowel A 234 '\u0906', // a5 -- Vowel AA 235 '\u0907', // a6 -- Vowel I 236 '\u0908', // a7 -- Vowel II 237 '\u0909', // a8 -- Vowel U 238 '\u090a', // a9 -- Vowel UU 239 '\u090b', // aa -- Vowel RI 240 '\u090e', // ab -- Vowel E ( Southern Scripts ) 241 '\u090f', // ac -- Vowel EY 242 '\u0910', // ad -- Vowel AI 243 '\u090d', // ae -- Vowel AYE ( Devanagari Script ) 244 '\u0912', // af -- Vowel O ( Southern Scripts ) 245 '\u0913', // b0 -- Vowel OW 246 '\u0914', // b1 -- Vowel AU 247 '\u0911', // b2 -- Vowel AWE ( Devanagari Script ) 248 '\u0915', // b3 -- Consonant KA 249 '\u0916', // b4 -- Consonant KHA 250 '\u0917', // b5 -- Consonant GA 251 '\u0918', // b6 -- Consonant GHA 252 '\u0919', // b7 -- Consonant NGA 253 '\u091a', // b8 -- Consonant CHA 254 '\u091b', // b9 -- Consonant CHHA 255 '\u091c', // ba -- Consonant JA 256 '\u091d', // bb -- Consonant JHA 257 '\u091e', // bc -- Consonant JNA 258 '\u091f', // bd -- Consonant Hard TA 259 '\u0920', // be -- Consonant Hard THA 260 '\u0921', // bf -- Consonant Hard DA 261 '\u0922', // c0 -- Consonant Hard DHA 262 '\u0923', // c1 -- Consonant Hard NA 263 '\u0924', // c2 -- Consonant Soft TA 264 '\u0925', // c3 -- Consonant Soft THA 265 '\u0926', // c4 -- Consonant Soft DA 266 '\u0927', // c5 -- Consonant Soft DHA 267 '\u0928', // c6 -- Consonant Soft NA 268 '\u0929', // c7 -- Consonant NA ( Tamil ) 269 '\u092a', // c8 -- Consonant PA 270 '\u092b', // c9 -- Consonant PHA 271 '\u092c', // ca -- Consonant BA 272 '\u092d', // cb -- Consonant BHA 273 '\u092e', // cc -- Consonant MA 274 '\u092f', // cd -- Consonant YA 275 '\u095f', // ce -- Consonant JYA ( Bengali, Assamese & Oriya ) 276 '\u0930', // cf -- Consonant RA 277 '\u0931', // d0 -- Consonant Hard RA ( Southern Scripts ) 278 '\u0932', // d1 -- Consonant LA 279 '\u0933', // d2 -- Consonant Hard LA 280 '\u0934', // d3 -- Consonant ZHA ( Tamil & Malayalam ) 281 '\u0935', // d4 -- Consonant VA 282 '\u0936', // d5 -- Consonant SHA 283 '\u0937', // d6 -- Consonant Hard SHA 284 '\u0938', // d7 -- Consonant SA 285 '\u0939', // d8 -- Consonant HA 286 287 '\u200d', // d9 -- Consonant INVISIBLE 288 '\u093e', // da -- Vowel Sign AA 289 290 '\u093f', // db -- Vowel Sign I 291 '\u0940', // dc -- Vowel Sign II 292 '\u0941', // dd -- Vowel Sign U 293 '\u0942', // de -- Vowel Sign UU 294 '\u0943', // df -- Vowel Sign RI 295 '\u0946', // e0 -- Vowel Sign E ( Southern Scripts ) 296 '\u0947', // e1 -- Vowel Sign EY 297 '\u0948', // e2 -- Vowel Sign AI 298 '\u0945', // e3 -- Vowel Sign AYE ( Devanagari Script ) 299 '\u094a', // e4 -- Vowel Sign O ( Southern Scripts ) 300 '\u094b', // e5 -- Vowel Sign OW 301 '\u094c', // e6 -- Vowel Sign AU 302 '\u0949', // e7 -- Vowel Sign AWE ( Devanagari Script ) 303 304 '\u094d', // e8 -- Vowel Omission Sign ( Halant ) 305 '\u093c', // e9 -- Diacritic Sign ( Nukta ) 306 '\u0964', // ea -- Full Stop ( Viram, Northern Scripts ) 307 308 '\uffff', // eb -- This position shall not be used 309 '\uffff', // ec -- This position shall not be used 310 '\uffff', // ed -- This position shall not be used 311 '\uffff', // ee -- This position shall not be used 312 313 '\ufffd', // ef -- Attribute Code ( ATR ) 314 '\ufffd', // f0 -- Extension Code ( EXT ) 315 316 '\u0966', // f1 -- Digit 0 317 '\u0967', // f2 -- Digit 1 318 '\u0968', // f3 -- Digit 2 319 '\u0969', // f4 -- Digit 3 320 '\u096a', // f5 -- Digit 4 321 '\u096b', // f6 -- Digit 5 322 '\u096c', // f7 -- Digit 6 323 '\u096d', // f8 -- Digit 7 324 '\u096e', // f9 -- Digit 8 325 '\u096f', // fa -- Digit 9 326 327 '\uffff', // fb -- This position shall not be used 328 '\uffff', // fc -- This position shall not be used 329 '\uffff', // fd -- This position shall not be used 330 '\uffff', // fe -- This position shall not be used 331 '\uffff' // ff -- This position shall not be used 332 }; //end of table definition 333 334 private static final byte[] encoderMappingTable = { 335 NO_CHAR,NO_CHAR, //0900 <reserved> 336 (byte)161,NO_CHAR, //0901 -- DEVANAGARI SIGN CANDRABINDU = anunasika 337 (byte)162,NO_CHAR, //0902 -- DEVANAGARI SIGN ANUSVARA = bindu 338 (byte)163,NO_CHAR, //0903 -- DEVANAGARI SIGN VISARGA 339 NO_CHAR,NO_CHAR, //0904 <reserved> 340 (byte)164,NO_CHAR, //0905 -- DEVANAGARI LETTER A 341 (byte)165,NO_CHAR, //0906 -- DEVANAGARI LETTER AA 342 (byte)166,NO_CHAR, //0907 -- DEVANAGARI LETTER I 343 (byte)167,NO_CHAR, //0908 -- DEVANAGARI LETTER II 344 (byte)168,NO_CHAR, //0909 -- DEVANAGARI LETTER U 345 (byte)169,NO_CHAR, //090a -- DEVANAGARI LETTER UU 346 (byte)170,NO_CHAR, //090b -- DEVANAGARI LETTER VOCALIC R 347 (byte)166,(byte)233, //090c -- DEVANAGARI LETTER VOVALIC L 348 (byte)174,NO_CHAR, //090d -- DEVANAGARI LETTER CANDRA E 349 (byte)171,NO_CHAR, //090e -- DEVANAGARI LETTER SHORT E 350 (byte)172,NO_CHAR, //090f -- DEVANAGARI LETTER E 351 (byte)173,NO_CHAR, //0910 -- DEVANAGARI LETTER AI 352 (byte)178,NO_CHAR, //0911 -- DEVANAGARI LETTER CANDRA O 353 (byte)175,NO_CHAR, //0912 -- DEVANAGARI LETTER SHORT O 354 (byte)176,NO_CHAR, //0913 -- DEVANAGARI LETTER O 355 (byte)177,NO_CHAR, //0914 -- DEVANAGARI LETTER AU 356 (byte)179,NO_CHAR, //0915 -- DEVANAGARI LETTER KA 357 (byte)180,NO_CHAR, //0916 -- DEVANAGARI LETTER KHA 358 (byte)181,NO_CHAR, //0917 -- DEVANAGARI LETTER GA 359 (byte)182,NO_CHAR, //0918 -- DEVANAGARI LETTER GHA 360 (byte)183,NO_CHAR, //0919 -- DEVANAGARI LETTER NGA 361 (byte)184,NO_CHAR, //091a -- DEVANAGARI LETTER CA 362 (byte)185,NO_CHAR, //091b -- DEVANAGARI LETTER CHA 363 (byte)186,NO_CHAR, //091c -- DEVANAGARI LETTER JA 364 (byte)187,NO_CHAR, //091d -- DEVANAGARI LETTER JHA 365 (byte)188,NO_CHAR, //091e -- DEVANAGARI LETTER NYA 366 (byte)189,NO_CHAR, //091f -- DEVANAGARI LETTER TTA 367 (byte)190,NO_CHAR, //0920 -- DEVANAGARI LETTER TTHA 368 (byte)191,NO_CHAR, //0921 -- DEVANAGARI LETTER DDA 369 (byte)192,NO_CHAR, //0922 -- DEVANAGARI LETTER DDHA 370 (byte)193,NO_CHAR, //0923 -- DEVANAGARI LETTER NNA 371 (byte)194,NO_CHAR, //0924 -- DEVANAGARI LETTER TA 372 (byte)195,NO_CHAR, //0925 -- DEVANAGARI LETTER THA 373 (byte)196,NO_CHAR, //0926 -- DEVANAGARI LETTER DA 374 (byte)197,NO_CHAR, //0927 -- DEVANAGARI LETTER DHA 375 (byte)198,NO_CHAR, //0928 -- DEVANAGARI LETTER NA 376 (byte)199,NO_CHAR, //0929 -- DEVANAGARI LETTER NNNA <=> 0928 + 093C 377 (byte)200,NO_CHAR, //092a -- DEVANAGARI LETTER PA 378 (byte)201,NO_CHAR, //092b -- DEVANAGARI LETTER PHA 379 (byte)202,NO_CHAR, //092c -- DEVANAGARI LETTER BA 380 (byte)203,NO_CHAR, //092d -- DEVANAGARI LETTER BHA 381 (byte)204,NO_CHAR, //092e -- DEVANAGARI LETTER MA 382 (byte)205,NO_CHAR, //092f -- DEVANAGARI LETTER YA 383 (byte)207,NO_CHAR, //0930 -- DEVANAGARI LETTER RA 384 (byte)208,NO_CHAR, //0931 -- DEVANAGARI LETTER RRA <=> 0930 + 093C 385 (byte)209,NO_CHAR, //0932 -- DEVANAGARI LETTER LA 386 (byte)210,NO_CHAR, //0933 -- DEVANAGARI LETTER LLA 387 (byte)211,NO_CHAR, //0934 -- DEVANAGARI LETTER LLLA <=> 0933 + 093C 388 (byte)212,NO_CHAR, //0935 -- DEVANAGARI LETTER VA 389 (byte)213,NO_CHAR, //0936 -- DEVANAGARI LETTER SHA 390 (byte)214,NO_CHAR, //0937 -- DEVANAGARI LETTER SSA 391 (byte)215,NO_CHAR, //0938 -- DEVANAGARI LETTER SA 392 (byte)216,NO_CHAR, //0939 -- DEVANAGARI LETTER HA 393 NO_CHAR,NO_CHAR, //093a <reserved> 394 NO_CHAR,NO_CHAR, //093b <reserved> 395 (byte)233,NO_CHAR, //093c -- DEVANAGARI SIGN NUKTA 396 (byte)234,(byte)233, //093d -- DEVANAGARI SIGN AVAGRAHA 397 (byte)218,NO_CHAR, //093e -- DEVANAGARI VOWEL SIGN AA 398 (byte)219,NO_CHAR, //093f -- DEVANAGARI VOWEL SIGN I 399 (byte)220,NO_CHAR, //0940 -- DEVANAGARI VOWEL SIGN II 400 (byte)221,NO_CHAR, //0941 -- DEVANAGARI VOWEL SIGN U 401 (byte)222,NO_CHAR, //0942 -- DEVANAGARI VOWEL SIGN UU 402 (byte)223,NO_CHAR, //0943 -- DEVANAGARI VOWEL SIGN VOCALIC R 403 (byte)223,(byte)233, //0944 -- DEVANAGARI VOWEL SIGN VOCALIC RR 404 (byte)227,NO_CHAR, //0945 -- DEVANAGARI VOWEL SIGN CANDRA E 405 (byte)224,NO_CHAR, //0946 -- DEVANAGARI VOWEL SIGN SHORT E 406 (byte)225,NO_CHAR, //0947 -- DEVANAGARI VOWEL SIGN E 407 (byte)226,NO_CHAR, //0948 -- DEVANAGARI VOWEL SIGN AI 408 (byte)231,NO_CHAR, //0949 -- DEVANAGARI VOWEL SIGN CANDRA O 409 (byte)228,NO_CHAR, //094a -- DEVANAGARI VOWEL SIGN SHORT O 410 (byte)229,NO_CHAR, //094b -- DEVANAGARI VOWEL SIGN O 411 (byte)230,NO_CHAR, //094c -- DEVANAGARI VOWEL SIGN AU 412 (byte)232,NO_CHAR, //094d -- DEVANAGARI SIGN VIRAMA ( halant ) 413 NO_CHAR,NO_CHAR, //094e <reserved> 414 NO_CHAR,NO_CHAR, //094f <reserved> 415 (byte)161,(byte)233, //0950 -- DEVANAGARI OM 416 (byte)240,(byte)181, //0951 -- DEVANAGARI STRESS SIGN UDATTA 417 (byte)240,(byte)184, //0952 -- DEVANAGARI STRESS SIGN ANUDATTA 418 (byte)254,NO_CHAR, //0953 -- DEVANAGARI GRAVE ACCENT || MISSING 419 (byte)254,NO_CHAR, //0954 -- DEVANAGARI ACUTE ACCENT || MISSING 420 NO_CHAR,NO_CHAR, //0955 <reserved> 421 NO_CHAR,NO_CHAR, //0956 <reserved> 422 NO_CHAR,NO_CHAR, //0957 <reserved> 423 (byte)179,(byte)233, //0958 -- DEVANAGARI LETTER QA <=> 0915 + 093C 424 (byte)180,(byte)233, //0959 -- DEVANAGARI LETTER KHHA <=> 0916 + 093C 425 (byte)181,(byte)233, //095a -- DEVANAGARI LETTER GHHA <=> 0917 + 093C 426 (byte)186,(byte)233, //095b -- DEVANAGARI LETTER ZA <=> 091C + 093C 427 (byte)191,(byte)233, //095c -- DEVANAGARI LETTER DDDHA <=> 0921 + 093C 428 (byte)192,(byte)233, //095d -- DEVANAGARI LETTER RHA <=> 0922 + 093C 429 (byte)201,(byte)233, //095e -- DEVANAGARI LETTER FA <=> 092B + 093C 430 (byte)206,NO_CHAR, //095f -- DEVANAGARI LETTER YYA <=> 092F + 093C 431 (byte)170,(byte)233, //0960 -- DEVANAGARI LETTER VOCALIC RR 432 (byte)167,(byte)233, //0961 -- DEVANAGARI LETTER VOCALIC LL 433 (byte)219,(byte)233, //0962 -- DEVANAGARI VOWEL SIGN VOCALIC L 434 (byte)220,(byte)233, //0963 -- DEVANAGARI VOWEL SIGN VOCALIC LL 435 (byte)234,NO_CHAR, //0964 -- DEVANAGARI DANDA ( phrase separator ) 436 (byte)234,(byte)234, //0965 -- DEVANAGARI DOUBLE DANDA 437 (byte)241,NO_CHAR, //0966 -- DEVANAGARI DIGIT ZERO 438 (byte)242,NO_CHAR, //0967 -- DEVANAGARI DIGIT ONE 439 (byte)243,NO_CHAR, //0968 -- DEVANAGARI DIGIT TWO 440 (byte)244,NO_CHAR, //0969 -- DEVANAGARI DIGIT THREE 441 (byte)245,NO_CHAR, //096a -- DEVANAGARI DIGIT FOUR 442 (byte)246,NO_CHAR, //096b -- DEVANAGARI DIGIT FIVE 443 (byte)247,NO_CHAR, //096c -- DEVANAGARI DIGIT SIX 444 (byte)248,NO_CHAR, //096d -- DEVANAGARI DIGIT SEVEN 445 (byte)249,NO_CHAR, //096e -- DEVANAGARI DIGIT EIGHT 446 (byte)250,NO_CHAR, //096f -- DEVANAGARI DIGIT NINE 447 (byte)240,(byte)191, //0970 -- DEVANAGARI ABBREVIATION SIGN 448 NO_CHAR,NO_CHAR, //0971 -- reserved 449 NO_CHAR,NO_CHAR, //0972 -- reserved 450 NO_CHAR,NO_CHAR, //0973 -- reserved 451 NO_CHAR,NO_CHAR, //0974 -- reserved 452 NO_CHAR,NO_CHAR, //0975 -- reserved 453 NO_CHAR,NO_CHAR, //0976 -- reserved 454 NO_CHAR,NO_CHAR, //0977 -- reserved 455 NO_CHAR,NO_CHAR, //0978 -- reserved 456 NO_CHAR,NO_CHAR, //0979 -- reserved 457 NO_CHAR,NO_CHAR, //097a -- reserved 458 NO_CHAR,NO_CHAR, //097b -- reserved 459 NO_CHAR,NO_CHAR, //097c -- reserved 460 NO_CHAR,NO_CHAR, //097d -- reserved 461 NO_CHAR,NO_CHAR, //097e -- reserved 462 NO_CHAR,NO_CHAR //097f -- reserved 463 }; //end of table definition 464 465 private static class Decoder extends CharsetDecoder { 466 467 private static final char ZWNJ_CHAR = '\u200c'; 468 private static final char ZWJ_CHAR = '\u200d'; 469 private static final char INVALID_CHAR = '\uffff'; 470 471 private char contextChar = INVALID_CHAR; 472 private boolean needFlushing = false; 473 474 475 private Decoder(Charset cs) { 476 super(cs, 1.0f, 1.0f); 477 } 478 479 protected CoderResult implFlush(CharBuffer out) { 480 if(needFlushing) { 481 if (out.remaining() < 1) { 482 return CoderResult.OVERFLOW; 483 } else { 484 out.put(contextChar); 485 } 486 } 487 contextChar = INVALID_CHAR; 488 needFlushing = false; 489 return CoderResult.UNDERFLOW; 490 } 491 492 /*Rules: 493 * 1)ATR,EXT,following character to be replaced with '\ufffd' 494 * 2)Halant + Halant => '\u094d' (Virama) + '\u200c'(ZWNJ) 495 * 3)Halant + Nukta => '\u094d' (Virama) + '\u200d'(ZWJ) 496 */ 497 private CoderResult decodeArrayLoop(ByteBuffer src, 498 CharBuffer dst) 499 { 500 byte[] sa = src.array(); 501 int sp = src.arrayOffset() + src.position(); 502 int sl = src.arrayOffset() + src.limit(); 503 assert (sp <= sl); 504 sp = (sp <= sl ? sp : sl); 505 506 char[] da = dst.array(); 507 int dp = dst.arrayOffset() + dst.position(); 508 int dl = dst.arrayOffset() + dst.limit(); 509 assert (dp <= dl); 510 dp = (dp <= dl ? dp : dl); 511 512 try { 513 while (sp < sl) { 514 int index = sa[sp]; 515 index = ( index < 0 )? ( index + 255 ):index; 516 char currentChar = directMapTable[index]; 517 518 // if the contextChar is either ATR || EXT 519 // set the output to '\ufffd' 520 if(contextChar == '\ufffd') { 521 if (dl - dp < 1) 522 return CoderResult.OVERFLOW; 523 da[dp++] = '\ufffd'; 524 contextChar = INVALID_CHAR; 525 needFlushing = false; 526 sp++; 527 continue; 528 } 529 530 switch(currentChar) { 531 case '\u0901': 532 case '\u0907': 533 case '\u0908': 534 case '\u090b': 535 case '\u093f': 536 case '\u0940': 537 case '\u0943': 538 case '\u0964': 539 if(needFlushing) { 540 if (dl - dp < 1) 541 return CoderResult.OVERFLOW; 542 da[dp++] = contextChar; 543 contextChar = currentChar; 544 sp++; 545 continue; 546 } 547 contextChar = currentChar; 548 needFlushing = true; 549 sp++; 550 continue; 551 case NUKTA_CHAR: 552 if (dl - dp < 1) 553 return CoderResult.OVERFLOW; 554 switch(contextChar) { 555 case '\u0901': 556 da[dp++] = '\u0950'; 557 break; 558 case '\u0907': 559 da[dp++] = '\u090c'; 560 break; 561 case '\u0908': 562 da[dp++] = '\u0961'; 563 break; 564 case '\u090b': 565 da[dp++] = '\u0960'; 566 break; 567 case '\u093f': 568 da[dp++] = '\u0962'; 569 break; 570 case '\u0940': 571 da[dp++] = '\u0963'; 572 break; 573 case '\u0943': 574 da[dp++] = '\u0944'; 575 break; 576 case '\u0964': 577 da[dp++] = '\u093d'; 578 break; 579 case HALANT_CHAR: 580 if(needFlushing) { 581 da[dp++] = contextChar; 582 contextChar = currentChar; 583 sp++; 584 continue; 585 } 586 da[dp++] = ZWJ_CHAR; 587 break; 588 default: 589 if(needFlushing) { 590 da[dp++] = contextChar; 591 contextChar = currentChar; 592 sp++; 593 continue; 594 } 595 da[dp++] = NUKTA_CHAR; 596 } 597 break; 598 case HALANT_CHAR: 599 if (dl - dp < 1) 600 return CoderResult.OVERFLOW; 601 if(needFlushing) { 602 da[dp++] = contextChar; 603 contextChar = currentChar; 604 sp++; 605 continue; 606 } 607 if(contextChar == HALANT_CHAR) { 608 da[dp++] = ZWNJ_CHAR; 609 break; 610 } 611 da[dp++] = HALANT_CHAR; 612 break; 613 case INVALID_CHAR: 614 if(needFlushing) { 615 if (dl - dp < 1) 616 return CoderResult.OVERFLOW; 617 da[dp++] = contextChar; 618 contextChar = currentChar; 619 sp++; 620 continue; 621 } 622 return CoderResult.unmappableForLength(1); 623 default: 624 if (dl - dp < 1) 625 return CoderResult.OVERFLOW; 626 if(needFlushing) { 627 da[dp++] = contextChar; 628 contextChar = currentChar; 629 sp++; 630 continue; 631 } 632 da[dp++] = currentChar; 633 break; 634 }//end switch 635 636 contextChar = currentChar; 637 needFlushing = false; 638 sp++; 639 } 640 return CoderResult.UNDERFLOW; 641 } finally { 642 src.position(sp - src.arrayOffset()); 643 dst.position(dp - dst.arrayOffset()); 644 } 645 } 646 647 private CoderResult decodeBufferLoop(ByteBuffer src, 648 CharBuffer dst) 649 { 650 int mark = src.position(); 651 652 try { 653 while (src.hasRemaining()) { 654 int index = src.get(); 655 index = ( index < 0 )? ( index + 255 ):index; 656 char currentChar = directMapTable[index]; 657 658 // if the contextChar is either ATR || EXT 659 // set the output to '\ufffd' 660 if(contextChar == '\ufffd') { 661 if (dst.remaining() < 1) 662 return CoderResult.OVERFLOW; 663 dst.put('\ufffd'); 664 contextChar = INVALID_CHAR; 665 needFlushing = false; 666 mark++; 667 continue; 668 } 669 670 switch(currentChar) { 671 case '\u0901': 672 case '\u0907': 673 case '\u0908': 674 case '\u090b': 675 case '\u093f': 676 case '\u0940': 677 case '\u0943': 678 case '\u0964': 679 if(needFlushing) { 680 if (dst.remaining() < 1) 681 return CoderResult.OVERFLOW; 682 dst.put(contextChar); 683 contextChar = currentChar; 684 mark++; 685 continue; 686 } 687 contextChar = currentChar; 688 needFlushing = true; 689 mark++; 690 continue; 691 case NUKTA_CHAR: 692 if (dst.remaining() < 1) 693 return CoderResult.OVERFLOW; 694 switch(contextChar) { 695 case '\u0901': 696 dst.put('\u0950'); 697 break; 698 case '\u0907': 699 dst.put('\u090c'); 700 break; 701 case '\u0908': 702 dst.put('\u0961'); 703 break; 704 case '\u090b': 705 dst.put('\u0960'); 706 break; 707 case '\u093f': 708 dst.put('\u0962'); 709 break; 710 case '\u0940': 711 dst.put('\u0963'); 712 break; 713 case '\u0943': 714 dst.put('\u0944'); 715 break; 716 case '\u0964': 717 dst.put('\u093d'); 718 break; 719 case HALANT_CHAR: 720 if(needFlushing) { 721 dst.put(contextChar); 722 contextChar = currentChar; 723 mark++; 724 continue; 725 } 726 dst.put(ZWJ_CHAR); 727 break; 728 default: 729 if(needFlushing) { 730 dst.put(contextChar); 731 contextChar = currentChar; 732 mark++; 733 continue; 734 } 735 dst.put(NUKTA_CHAR); 736 } 737 break; 738 case HALANT_CHAR: 739 if (dst.remaining() < 1) 740 return CoderResult.OVERFLOW; 741 if(needFlushing) { 742 dst.put(contextChar); 743 contextChar = currentChar; 744 mark++; 745 continue; 746 } 747 if(contextChar == HALANT_CHAR) { 748 dst.put(ZWNJ_CHAR); 749 break; 750 } 751 dst.put(HALANT_CHAR); 752 break; 753 case INVALID_CHAR: 754 if(needFlushing) { 755 if (dst.remaining() < 1) 756 return CoderResult.OVERFLOW; 757 dst.put(contextChar); 758 contextChar = currentChar; 759 mark++; 760 continue; 761 } 762 return CoderResult.unmappableForLength(1); 763 default: 764 if (dst.remaining() < 1) 765 return CoderResult.OVERFLOW; 766 if(needFlushing) { 767 dst.put(contextChar); 768 contextChar = currentChar; 769 mark++; 770 continue; 771 } 772 dst.put(currentChar); 773 break; 774 }//end switch 775 contextChar = currentChar; 776 needFlushing = false; 777 mark++; 778 } 779 return CoderResult.UNDERFLOW; 780 } finally { 781 src.position(mark); 782 } 783 } 784 785 protected CoderResult decodeLoop(ByteBuffer src, 786 CharBuffer dst) 787 { 788 if (src.hasArray() && dst.hasArray()) 789 return decodeArrayLoop(src, dst); 790 else 791 return decodeBufferLoop(src, dst); 792 } 793 } 794 795 private static class Encoder extends CharsetEncoder { 796 797 private static final byte NO_CHAR = (byte)255; 798 799 //private static CharToByteISCII91 c2b = new CharToByteISCII91(); 800 //private static final byte[] directMapTable = c2b.getISCIIEncoderMap(); 801 802 private final Surrogate.Parser sgp = new Surrogate.Parser(); 803 804 private Encoder(Charset cs) { 805 super(cs, 2.0f, 2.0f); 806 } 807 808 public boolean canEncode(char ch) { 809 //check for Devanagari range,ZWJ,ZWNJ and ASCII range. 810 return ((ch >= '\u0900' && ch <= '\u097f' && 811 encoderMappingTable[2*(ch-'\u0900')] != NO_CHAR) || 812 (ch == '\u200d') || 813 (ch == '\u200c') || 814 (ch <= '\u007f')); 815 } 816 817 818 private CoderResult encodeArrayLoop(CharBuffer src, 819 ByteBuffer dst) 820 { 821 char[] sa = src.array(); 822 int sp = src.arrayOffset() + src.position(); 823 int sl = src.arrayOffset() + src.limit(); 824 assert (sp <= sl); 825 sp = (sp <= sl ? sp : sl); 826 byte[] da = dst.array(); 827 int dp = dst.arrayOffset() + dst.position(); 828 int dl = dst.arrayOffset() + dst.limit(); 829 assert (dp <= dl); 830 dp = (dp <= dl ? dp : dl); 831 832 int outputSize = 0; 833 834 try { 835 char inputChar; 836 while (sp < sl) { 837 int index = Integer.MIN_VALUE; 838 inputChar = sa[sp]; 839 840 if (inputChar >= 0x0000 && inputChar <= 0x007f) { 841 if (dl - dp < 1) 842 return CoderResult.OVERFLOW; 843 da[dp++] = (byte) inputChar; 844 sp++; 845 continue; 846 } 847 848 // if inputChar == ZWJ replace it with halant 849 // if inputChar == ZWNJ replace it with Nukta 850 851 if (inputChar == 0x200c) { 852 inputChar = HALANT_CHAR; 853 } 854 else if (inputChar == 0x200d) { 855 inputChar = NUKTA_CHAR; 856 } 857 858 if (inputChar >= 0x0900 && inputChar <= 0x097f) { 859 index = ((int)(inputChar) - 0x0900)*2; 860 } 861 862 if (Character.isSurrogate(inputChar)) { 863 if (sgp.parse(inputChar, sa, sp, sl) < 0) 864 return sgp.error(); 865 return sgp.unmappableResult(); 866 } 867 868 if (index == Integer.MIN_VALUE || 869 encoderMappingTable[index] == NO_CHAR) { 870 return CoderResult.unmappableForLength(1); 871 } else { 872 if(encoderMappingTable[index + 1] == NO_CHAR) { 873 if(dl - dp < 1) 874 return CoderResult.OVERFLOW; 875 da[dp++] = encoderMappingTable[index]; 876 } else { 877 if(dl - dp < 2) 878 return CoderResult.OVERFLOW; 879 da[dp++] = encoderMappingTable[index]; 880 da[dp++] = encoderMappingTable[index + 1]; 881 } 882 sp++; 883 } 884 } 885 return CoderResult.UNDERFLOW; 886 } finally { 887 src.position(sp - src.arrayOffset()); 888 dst.position(dp - dst.arrayOffset()); 889 } 890 } 891 892 private CoderResult encodeBufferLoop(CharBuffer src, 893 ByteBuffer dst) 894 { 895 int mark = src.position(); 896 897 try { 898 char inputChar; 899 while (src.hasRemaining()) { 900 int index = Integer.MIN_VALUE; 901 inputChar = src.get(); 902 903 if (inputChar >= 0x0000 && inputChar <= 0x007f) { 904 if (dst.remaining() < 1) 905 return CoderResult.OVERFLOW; 906 dst.put((byte) inputChar); 907 mark++; 908 continue; 909 } 910 911 // if inputChar == ZWJ replace it with halant 912 // if inputChar == ZWNJ replace it with Nukta 913 914 if (inputChar == 0x200c) { 915 inputChar = HALANT_CHAR; 916 } 917 else if (inputChar == 0x200d) { 918 inputChar = NUKTA_CHAR; 919 } 920 921 if (inputChar >= 0x0900 && inputChar <= 0x097f) { 922 index = ((int)(inputChar) - 0x0900)*2; 923 } 924 925 if (Character.isSurrogate(inputChar)) { 926 if (sgp.parse(inputChar, src) < 0) 927 return sgp.error(); 928 return sgp.unmappableResult(); 929 } 930 931 if (index == Integer.MIN_VALUE || 932 encoderMappingTable[index] == NO_CHAR) { 933 return CoderResult.unmappableForLength(1); 934 } else { 935 if(encoderMappingTable[index + 1] == NO_CHAR) { 936 if(dst.remaining() < 1) 937 return CoderResult.OVERFLOW; 938 dst.put(encoderMappingTable[index]); 939 } else { 940 if(dst.remaining() < 2) 941 return CoderResult.OVERFLOW; 942 dst.put(encoderMappingTable[index]); 943 dst.put(encoderMappingTable[index + 1]); 944 } 945 } 946 mark++; 947 } 948 return CoderResult.UNDERFLOW; 949 } finally { 950 src.position(mark); 951 } 952 } 953 954 protected CoderResult encodeLoop(CharBuffer src, 955 ByteBuffer dst) 956 { 957 if (src.hasArray() && dst.hasArray()) 958 return encodeArrayLoop(src, dst); 959 else 960 return encodeBufferLoop(src, dst); 961 } 962 } 963} 964