J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2002-2006 Sun Microsystems, Inc. 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. Sun designates this |
| 8 | * particular file as subject to the "Classpath" exception as provided |
| 9 | * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 22 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 23 | * have any questions. |
| 24 | */ |
| 25 | |
| 26 | /* |
| 27 | */ |
| 28 | |
| 29 | package sun.nio.cs.ext; |
| 30 | |
| 31 | import java.nio.ByteBuffer; |
| 32 | import java.nio.CharBuffer; |
| 33 | import java.nio.charset.Charset; |
| 34 | import java.nio.charset.CharsetDecoder; |
| 35 | import java.nio.charset.CharsetEncoder; |
| 36 | import java.nio.charset.CoderResult; |
| 37 | import sun.nio.cs.Surrogate; |
| 38 | |
| 39 | abstract class ISO2022 |
| 40 | extends Charset |
| 41 | { |
| 42 | |
| 43 | private static final byte ISO_ESC = 0x1b; |
| 44 | private static final byte ISO_SI = 0x0f; |
| 45 | private static final byte ISO_SO = 0x0e; |
| 46 | private static final byte ISO_SS2_7 = 0x4e; |
| 47 | private static final byte ISO_SS3_7 = 0x4f; |
| 48 | private static final byte MSB = (byte)0x80; |
| 49 | private static final char REPLACE_CHAR = '\uFFFD'; |
| 50 | private static final byte minDesignatorLength = 3; |
| 51 | |
| 52 | public ISO2022(String csname, String[] aliases) { |
| 53 | super(csname, aliases); |
| 54 | } |
| 55 | |
| 56 | public CharsetDecoder newDecoder() { |
| 57 | return new Decoder(this); |
| 58 | } |
| 59 | |
| 60 | public CharsetEncoder newEncoder() { |
| 61 | return new Encoder(this); |
| 62 | } |
| 63 | |
| 64 | protected static class Decoder extends CharsetDecoder { |
| 65 | |
| 66 | // Value to be filled by subclass |
| 67 | protected byte SODesig[][]; |
| 68 | protected byte SS2Desig[][] = null; |
| 69 | protected byte SS3Desig[][] = null; |
| 70 | |
| 71 | protected CharsetDecoder SODecoder[]; |
| 72 | protected CharsetDecoder SS2Decoder[] = null; |
| 73 | protected CharsetDecoder SS3Decoder[] = null; |
| 74 | |
| 75 | private static final byte SOFlag = 0; |
| 76 | private static final byte SS2Flag = 1; |
| 77 | private static final byte SS3Flag = 2; |
| 78 | |
| 79 | private int curSODes, curSS2Des, curSS3Des; |
| 80 | private boolean shiftout; |
| 81 | private CharsetDecoder tmpDecoder[]; |
| 82 | |
| 83 | protected Decoder(Charset cs) { |
| 84 | super(cs, 1.0f, 1.0f); |
| 85 | } |
| 86 | |
| 87 | protected void implReset() { |
| 88 | curSODes = 0; |
| 89 | curSS2Des = 0; |
| 90 | curSS3Des = 0; |
| 91 | shiftout = false; |
| 92 | } |
| 93 | |
| 94 | private char decode(byte byte1, byte byte2, byte shiftFlag) |
| 95 | { |
| 96 | byte1 |= MSB; |
| 97 | byte2 |= MSB; |
| 98 | |
| 99 | byte[] tmpByte = { byte1,byte2 }; |
| 100 | char[] tmpChar = new char[1]; |
| 101 | int i = 0, |
| 102 | tmpIndex = 0; |
| 103 | |
| 104 | switch(shiftFlag) { |
| 105 | case SOFlag: |
| 106 | tmpIndex = curSODes; |
| 107 | tmpDecoder = (CharsetDecoder [])SODecoder; |
| 108 | break; |
| 109 | case SS2Flag: |
| 110 | tmpIndex = curSS2Des; |
| 111 | tmpDecoder = (CharsetDecoder [])SS2Decoder; |
| 112 | break; |
| 113 | case SS3Flag: |
| 114 | tmpIndex = curSS3Des; |
| 115 | tmpDecoder = (CharsetDecoder [])SS3Decoder; |
| 116 | break; |
| 117 | } |
| 118 | |
| 119 | if (tmpDecoder != null) { |
| 120 | for(i = 0; i < tmpDecoder.length; i++) { |
| 121 | if(tmpIndex == i) { |
| 122 | try { |
| 123 | ByteBuffer bb = ByteBuffer.wrap(tmpByte,0,2); |
| 124 | CharBuffer cc = CharBuffer.wrap(tmpChar,0,1); |
| 125 | tmpDecoder[i].decode(bb, cc, true); |
| 126 | cc.flip(); |
| 127 | return cc.get(); |
| 128 | } catch (Exception e) {} |
| 129 | } |
| 130 | } |
| 131 | } |
| 132 | return REPLACE_CHAR; |
| 133 | } |
| 134 | |
| 135 | private int findDesig(byte[] in, int sp, int sl, byte[][] desigs) { |
| 136 | if (desigs == null) return -1; |
| 137 | int i = 0; |
| 138 | while (i < desigs.length) { |
| 139 | if (desigs[i] != null && sl - sp >= desigs[i].length) { |
| 140 | int j = 0; |
| 141 | while (j < desigs[i].length && in[sp+j] == desigs[i][j]) { j++; } |
| 142 | if (j == desigs[i].length) |
| 143 | return i; |
| 144 | } |
| 145 | i++; |
| 146 | } |
| 147 | return -1; |
| 148 | } |
| 149 | |
| 150 | private int findDesigBuf(ByteBuffer in, byte[][] desigs) { |
| 151 | if (desigs == null) return -1; |
| 152 | int i = 0; |
| 153 | while (i < desigs.length) { |
| 154 | if (desigs[i] != null && in.remaining() >= desigs[i].length) { |
| 155 | int j = 0; |
| 156 | in.mark(); |
| 157 | while (j < desigs[i].length && in.get() == desigs[i][j]) { j++; } |
| 158 | if (j == desigs[i].length) |
| 159 | return i; |
| 160 | in.reset(); |
| 161 | } |
| 162 | i++; |
| 163 | } |
| 164 | return -1; |
| 165 | } |
| 166 | |
| 167 | private CoderResult decodeArrayLoop(ByteBuffer src, |
| 168 | CharBuffer dst) |
| 169 | { |
| 170 | byte[] sa = src.array(); |
| 171 | int sp = src.arrayOffset() + src.position(); |
| 172 | int sl = src.arrayOffset() + src.limit(); |
| 173 | assert (sp <= sl); |
| 174 | sp = (sp <= sl ? sp : sl); |
| 175 | |
| 176 | char[] da = dst.array(); |
| 177 | int dp = dst.arrayOffset() + dst.position(); |
| 178 | int dl = dst.arrayOffset() + dst.limit(); |
| 179 | assert (dp <= dl); |
| 180 | dp = (dp <= dl ? dp : dl); |
| 181 | |
| 182 | int b1 = 0, b2 = 0, b3 = 0; |
| 183 | |
| 184 | try { |
| 185 | while (sp < sl) { |
| 186 | b1 = sa[sp] & 0xff; |
| 187 | int inputSize = 1; |
| 188 | switch (b1) { |
| 189 | case ISO_SO: |
| 190 | shiftout = true; |
| 191 | inputSize = 1; |
| 192 | break; |
| 193 | case ISO_SI: |
| 194 | shiftout = false; |
| 195 | inputSize = 1; |
| 196 | break; |
| 197 | case ISO_ESC: |
| 198 | if (sl - sp - 1 < minDesignatorLength) |
| 199 | return CoderResult.UNDERFLOW; |
| 200 | |
| 201 | int desig = findDesig(sa, sp + 1, sl, SODesig); |
| 202 | if (desig != -1) { |
| 203 | curSODes = desig; |
| 204 | inputSize = SODesig[desig].length + 1; |
| 205 | break; |
| 206 | } |
| 207 | desig = findDesig(sa, sp + 1, sl, SS2Desig); |
| 208 | if (desig != -1) { |
| 209 | curSS2Des = desig; |
| 210 | inputSize = SS2Desig[desig].length + 1; |
| 211 | break; |
| 212 | } |
| 213 | desig = findDesig(sa, sp + 1, sl, SS3Desig); |
| 214 | if (desig != -1) { |
| 215 | curSS3Des = desig; |
| 216 | inputSize = SS3Desig[desig].length + 1; |
| 217 | break; |
| 218 | } |
| 219 | if (sl - sp < 2) |
| 220 | return CoderResult.UNDERFLOW; |
| 221 | b1 = sa[sp + 1]; |
| 222 | switch(b1) { |
| 223 | case ISO_SS2_7: |
| 224 | if (sl - sp < 4) |
| 225 | return CoderResult.UNDERFLOW; |
| 226 | b2 = sa[sp +2]; |
| 227 | b3 = sa[sp +3]; |
| 228 | if (dl - dp <1) |
| 229 | return CoderResult.OVERFLOW; |
| 230 | da[dp] = decode((byte)b2, |
| 231 | (byte)b3, |
| 232 | SS2Flag); |
| 233 | dp++; |
| 234 | inputSize = 4; |
| 235 | break; |
| 236 | case ISO_SS3_7: |
| 237 | if (sl - sp < 4) |
| 238 | return CoderResult.UNDERFLOW; |
| 239 | b2 = sa[sp + 2]; |
| 240 | b3 = sa[sp + 3]; |
| 241 | if (dl - dp <1) |
| 242 | return CoderResult.OVERFLOW; |
| 243 | da[dp] = decode((byte)b2, |
| 244 | (byte)b3, |
| 245 | SS3Flag); |
| 246 | dp++; |
| 247 | inputSize = 4; |
| 248 | break; |
| 249 | default: |
| 250 | return CoderResult.malformedForLength(2); |
| 251 | } |
| 252 | break; |
| 253 | default: |
| 254 | if (dl - dp < 1) |
| 255 | return CoderResult.OVERFLOW; |
| 256 | if (!shiftout) { |
| 257 | da[dp++]=(char)(sa[sp] & 0xff); |
| 258 | } else { |
| 259 | if (dl - dp < 1) |
| 260 | return CoderResult.OVERFLOW; |
| 261 | if (sl - sp < 2) |
| 262 | return CoderResult.UNDERFLOW; |
| 263 | b2 = sa[sp+1] & 0xff; |
| 264 | da[dp++] = decode((byte)b1, |
| 265 | (byte)b2, |
| 266 | SOFlag); |
| 267 | inputSize = 2; |
| 268 | } |
| 269 | break; |
| 270 | } |
| 271 | sp += inputSize; |
| 272 | } |
| 273 | return CoderResult.UNDERFLOW; |
| 274 | } finally { |
| 275 | src.position(sp - src.arrayOffset()); |
| 276 | dst.position(dp - dst.arrayOffset()); |
| 277 | } |
| 278 | } |
| 279 | |
| 280 | private CoderResult decodeBufferLoop(ByteBuffer src, |
| 281 | CharBuffer dst) |
| 282 | { |
| 283 | int mark = src.position(); |
| 284 | int b1 = 0, b2 = 0, b3 = 0; |
| 285 | |
| 286 | try { |
| 287 | while (src.hasRemaining()) { |
| 288 | b1 = src.get(); |
| 289 | int inputSize = 1; |
| 290 | switch (b1) { |
| 291 | case ISO_SO: |
| 292 | shiftout = true; |
| 293 | break; |
| 294 | case ISO_SI: |
| 295 | shiftout = false; |
| 296 | break; |
| 297 | case ISO_ESC: |
| 298 | if (src.remaining() < minDesignatorLength) |
| 299 | return CoderResult.UNDERFLOW; |
| 300 | |
| 301 | int desig = findDesigBuf(src, SODesig); |
| 302 | if (desig != -1) { |
| 303 | curSODes = desig; |
| 304 | inputSize = SODesig[desig].length + 1; |
| 305 | break; |
| 306 | } |
| 307 | desig = findDesigBuf(src, SS2Desig); |
| 308 | if (desig != -1) { |
| 309 | curSS2Des = desig; |
| 310 | inputSize = SS2Desig[desig].length + 1; |
| 311 | break; |
| 312 | } |
| 313 | desig = findDesigBuf(src, SS3Desig); |
| 314 | if (desig != -1) { |
| 315 | curSS3Des = desig; |
| 316 | inputSize = SS3Desig[desig].length + 1; |
| 317 | break; |
| 318 | } |
| 319 | |
| 320 | if (src.remaining() < 1) |
| 321 | return CoderResult.UNDERFLOW; |
| 322 | b1 = src.get(); |
| 323 | switch(b1) { |
| 324 | case ISO_SS2_7: |
| 325 | if (src.remaining() < 2) |
| 326 | return CoderResult.UNDERFLOW; |
| 327 | b2 = src.get(); |
| 328 | b3 = src.get(); |
| 329 | if (dst.remaining() < 1) |
| 330 | return CoderResult.OVERFLOW; |
| 331 | dst.put(decode((byte)b2, |
| 332 | (byte)b3, |
| 333 | SS2Flag)); |
| 334 | inputSize = 4; |
| 335 | break; |
| 336 | case ISO_SS3_7: |
| 337 | if (src.remaining() < 2) |
| 338 | return CoderResult.UNDERFLOW; |
| 339 | b2 = src.get(); |
| 340 | b3 = src.get(); |
| 341 | if (dst.remaining() < 1) |
| 342 | return CoderResult.OVERFLOW; |
| 343 | dst.put(decode((byte)b2, |
| 344 | (byte)b3, |
| 345 | SS3Flag)); |
| 346 | inputSize = 4; |
| 347 | break; |
| 348 | default: |
| 349 | return CoderResult.malformedForLength(2); |
| 350 | } |
| 351 | break; |
| 352 | default: |
| 353 | if (dst.remaining() < 1) |
| 354 | return CoderResult.OVERFLOW; |
| 355 | if (!shiftout) { |
| 356 | dst.put((char)(b1 & 0xff)); |
| 357 | } else { |
| 358 | if (dst.remaining() < 1) |
| 359 | return CoderResult.OVERFLOW; |
| 360 | if (src.remaining() < 1) |
| 361 | return CoderResult.UNDERFLOW; |
| 362 | b2 = src.get() & 0xff; |
| 363 | dst.put(decode((byte)b1, |
| 364 | (byte)b2, |
| 365 | SOFlag)); |
| 366 | inputSize = 2; |
| 367 | } |
| 368 | break; |
| 369 | } |
| 370 | mark += inputSize; |
| 371 | } |
| 372 | return CoderResult.UNDERFLOW; |
| 373 | } catch (Exception e) { e.printStackTrace(); return CoderResult.OVERFLOW; } |
| 374 | finally { |
| 375 | src.position(mark); |
| 376 | } |
| 377 | } |
| 378 | |
| 379 | protected CoderResult decodeLoop(ByteBuffer src, |
| 380 | CharBuffer dst) |
| 381 | { |
| 382 | if (src.hasArray() && dst.hasArray()) |
| 383 | return decodeArrayLoop(src, dst); |
| 384 | else |
| 385 | return decodeBufferLoop(src, dst); |
| 386 | } |
| 387 | } |
| 388 | |
| 389 | protected static class Encoder extends CharsetEncoder { |
| 390 | private final Surrogate.Parser sgp = new Surrogate.Parser(); |
| 391 | private final byte SS2 = (byte)0x8e; |
| 392 | private final byte P2 = (byte)0xA2; |
| 393 | private final byte P3 = (byte)0xA3; |
| 394 | private final byte MSB = (byte)0x80; |
| 395 | |
| 396 | protected final byte maximumDesignatorLength = 4; |
| 397 | |
| 398 | protected String SODesig, |
| 399 | SS2Desig = null, |
| 400 | SS3Desig = null; |
| 401 | |
| 402 | protected CharsetEncoder ISOEncoder; |
| 403 | |
| 404 | private boolean shiftout = false; |
| 405 | private boolean SODesDefined = false; |
| 406 | private boolean SS2DesDefined = false; |
| 407 | private boolean SS3DesDefined = false; |
| 408 | |
| 409 | private boolean newshiftout = false; |
| 410 | private boolean newSODesDefined = false; |
| 411 | private boolean newSS2DesDefined = false; |
| 412 | private boolean newSS3DesDefined = false; |
| 413 | |
| 414 | protected Encoder(Charset cs) { |
| 415 | super(cs, 4.0f, 8.0f); |
| 416 | } |
| 417 | |
| 418 | public boolean canEncode(char c) { |
| 419 | return (ISOEncoder.canEncode(c)); |
| 420 | } |
| 421 | |
| 422 | protected void implReset() { |
| 423 | shiftout = false; |
| 424 | SODesDefined = false; |
| 425 | SS2DesDefined = false; |
| 426 | SS3DesDefined = false; |
| 427 | } |
| 428 | |
| 429 | private int unicodeToNative(char unicode, byte ebyte[]) |
| 430 | { |
| 431 | int index = 0; |
| 432 | byte tmpByte[]; |
| 433 | char convChar[] = {unicode}; |
| 434 | byte convByte[] = new byte[4]; |
| 435 | int converted; |
| 436 | |
| 437 | try{ |
| 438 | CharBuffer cc = CharBuffer.wrap(convChar); |
| 439 | ByteBuffer bb = ByteBuffer.allocate(4); |
| 440 | ISOEncoder.encode(cc, bb, true); |
| 441 | bb.flip(); |
| 442 | converted = bb.remaining(); |
| 443 | bb.get(convByte,0,converted); |
| 444 | } catch(Exception e) { |
| 445 | return -1; |
| 446 | } |
| 447 | |
| 448 | if (converted == 2) { |
| 449 | if (!SODesDefined) { |
| 450 | newSODesDefined = true; |
| 451 | ebyte[0] = ISO_ESC; |
| 452 | tmpByte = SODesig.getBytes(); |
| 453 | System.arraycopy(tmpByte,0,ebyte,1,tmpByte.length); |
| 454 | index = tmpByte.length+1; |
| 455 | } |
| 456 | if (!shiftout) { |
| 457 | newshiftout = true; |
| 458 | ebyte[index++] = ISO_SO; |
| 459 | } |
| 460 | ebyte[index++] = (byte)(convByte[0] & 0x7f); |
| 461 | ebyte[index++] = (byte)(convByte[1] & 0x7f); |
| 462 | } else { |
| 463 | if((convByte[0] == SS2) && (convByte[1] == P2)) { |
| 464 | if (!SS2DesDefined) { |
| 465 | newSS2DesDefined = true; |
| 466 | ebyte[0] = ISO_ESC; |
| 467 | tmpByte = SS2Desig.getBytes(); |
| 468 | System.arraycopy(tmpByte, 0, ebyte, 1, tmpByte.length); |
| 469 | index = tmpByte.length+1; |
| 470 | } |
| 471 | ebyte[index++] = ISO_ESC; |
| 472 | ebyte[index++] = ISO_SS2_7; |
| 473 | ebyte[index++] = (byte)(convByte[2] & 0x7f); |
| 474 | ebyte[index++] = (byte)(convByte[3] & 0x7f); |
| 475 | } |
| 476 | if((convByte[0] == SS2)&&(convByte[1] == 0xA3)) |
| 477 | { |
| 478 | if(!SS3DesDefined){ |
| 479 | newSS3DesDefined = true; |
| 480 | ebyte[0] = ISO_ESC; |
| 481 | tmpByte = SS3Desig.getBytes(); |
| 482 | System.arraycopy(tmpByte, 0, ebyte, 1, tmpByte.length); |
| 483 | index = tmpByte.length+1; |
| 484 | } |
| 485 | ebyte[index++] = ISO_ESC; |
| 486 | ebyte[index++] = ISO_SS3_7; |
| 487 | ebyte[index++] = (byte)(convByte[2] & 0x7f); |
| 488 | ebyte[index++] = (byte)(convByte[3] & 0x7f); |
| 489 | } |
| 490 | } |
| 491 | return index; |
| 492 | } |
| 493 | |
| 494 | private CoderResult encodeArrayLoop(CharBuffer src, |
| 495 | ByteBuffer dst) |
| 496 | { |
| 497 | char[] sa = src.array(); |
| 498 | int sp = src.arrayOffset() + src.position(); |
| 499 | int sl = src.arrayOffset() + src.limit(); |
| 500 | assert (sp <= sl); |
| 501 | sp = (sp <= sl ? sp : sl); |
| 502 | byte[] da = dst.array(); |
| 503 | int dp = dst.arrayOffset() + dst.position(); |
| 504 | int dl = dst.arrayOffset() + dst.limit(); |
| 505 | assert (dp <= dl); |
| 506 | dp = (dp <= dl ? dp : dl); |
| 507 | |
| 508 | int outputSize = 0; |
| 509 | byte[] outputByte = new byte[8]; |
| 510 | newshiftout = shiftout; |
| 511 | newSODesDefined = SODesDefined; |
| 512 | newSS2DesDefined = SS2DesDefined; |
| 513 | newSS3DesDefined = SS3DesDefined; |
| 514 | |
| 515 | try { |
| 516 | while (sp < sl) { |
| 517 | char c = sa[sp]; |
| 518 | if (Surrogate.is(c)) { |
| 519 | if (sgp.parse(c, sa, sp, sl) < 0) |
| 520 | return sgp.error(); |
| 521 | return sgp.unmappableResult(); |
| 522 | } |
| 523 | |
| 524 | if (c < 0x80) { // ASCII |
| 525 | if (shiftout){ |
| 526 | newshiftout = false; |
| 527 | outputSize = 2; |
| 528 | outputByte[0] = ISO_SI; |
| 529 | outputByte[1] = (byte)(c & 0x7f); |
| 530 | } else { |
| 531 | outputSize = 1; |
| 532 | outputByte[0] = (byte)(c & 0x7f); |
| 533 | } |
| 534 | if(sa[sp] == '\n'){ |
| 535 | newSODesDefined = false; |
| 536 | newSS2DesDefined = false; |
| 537 | newSS3DesDefined = false; |
| 538 | } |
| 539 | } else { |
| 540 | outputSize = unicodeToNative(c, outputByte); |
| 541 | if (outputSize == 0) { |
| 542 | return CoderResult.unmappableForLength(1); |
| 543 | } |
| 544 | } |
| 545 | if (dl - dp < outputSize) |
| 546 | return CoderResult.OVERFLOW; |
| 547 | |
| 548 | for (int i = 0; i < outputSize; i++) |
| 549 | da[dp++] = outputByte[i]; |
| 550 | sp++; |
| 551 | shiftout = newshiftout; |
| 552 | SODesDefined = newSODesDefined; |
| 553 | SS2DesDefined = newSS2DesDefined; |
| 554 | SS3DesDefined = newSS3DesDefined; |
| 555 | } |
| 556 | return CoderResult.UNDERFLOW; |
| 557 | } finally { |
| 558 | src.position(sp - src.arrayOffset()); |
| 559 | dst.position(dp - dst.arrayOffset()); |
| 560 | } |
| 561 | } |
| 562 | |
| 563 | |
| 564 | private CoderResult encodeBufferLoop(CharBuffer src, |
| 565 | ByteBuffer dst) |
| 566 | { |
| 567 | int outputSize = 0; |
| 568 | byte[] outputByte = new byte[8]; |
| 569 | int inputSize = 0; // Size of input |
| 570 | newshiftout = shiftout; |
| 571 | newSODesDefined = SODesDefined; |
| 572 | newSS2DesDefined = SS2DesDefined; |
| 573 | newSS3DesDefined = SS3DesDefined; |
| 574 | int mark = src.position(); |
| 575 | |
| 576 | try { |
| 577 | while (src.hasRemaining()) { |
| 578 | char inputChar = src.get(); |
| 579 | if (Surrogate.is(inputChar)) { |
| 580 | if (sgp.parse(inputChar, src) < 0) |
| 581 | return sgp.error(); |
| 582 | return sgp.unmappableResult(); |
| 583 | } |
| 584 | if (inputChar < 0x80) { // ASCII |
| 585 | if (shiftout){ |
| 586 | newshiftout = false; |
| 587 | outputSize = 2; |
| 588 | outputByte[0] = ISO_SI; |
| 589 | outputByte[1] = (byte)(inputChar & 0x7f); |
| 590 | } else { |
| 591 | outputSize = 1; |
| 592 | outputByte[0] = (byte)(inputChar & 0x7f); |
| 593 | } |
| 594 | if(inputChar == '\n'){ |
| 595 | newSODesDefined = false; |
| 596 | newSS2DesDefined = false; |
| 597 | newSS3DesDefined = false; |
| 598 | } |
| 599 | } else { |
| 600 | outputSize = unicodeToNative(inputChar, outputByte); |
| 601 | if (outputSize == 0) { |
| 602 | return CoderResult.unmappableForLength(1); |
| 603 | } |
| 604 | } |
| 605 | |
| 606 | if (dst.remaining() < outputSize) |
| 607 | return CoderResult.OVERFLOW; |
| 608 | for (int i = 0; i < outputSize; i++) |
| 609 | dst.put(outputByte[i]); |
| 610 | mark++; |
| 611 | shiftout = newshiftout; |
| 612 | SODesDefined = newSODesDefined; |
| 613 | SS2DesDefined = newSS2DesDefined; |
| 614 | SS3DesDefined = newSS3DesDefined; |
| 615 | } |
| 616 | return CoderResult.UNDERFLOW; |
| 617 | } finally { |
| 618 | src.position(mark); |
| 619 | } |
| 620 | } |
| 621 | |
| 622 | protected CoderResult encodeLoop(CharBuffer src, |
| 623 | ByteBuffer dst) |
| 624 | { |
| 625 | if (src.hasArray() && dst.hasArray()) |
| 626 | return encodeArrayLoop(src, dst); |
| 627 | else |
| 628 | return encodeBufferLoop(src, dst); |
| 629 | } |
| 630 | } |
| 631 | } |