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| 1 // Copyright 2014 PDFium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com | |
| 6 // Original code is licensed as follows: | |
| 7 /* | |
| 8 * Copyright 2008 ZXing authors | |
| 9 * | |
| 10 * Licensed under the Apache License, Version 2.0 (the "License"); | |
| 11 * you may not use this file except in compliance with the License. | |
| 12 * You may obtain a copy of the License at | |
| 13 * | |
| 14 * http://www.apache.org/licenses/LICENSE-2.0 | |
| 15 * | |
| 16 * Unless required by applicable law or agreed to in writing, software | |
| 17 * distributed under the License is distributed on an "AS IS" BASIS, | |
| 18 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
| 19 * See the License for the specific language governing permissions and | |
| 20 * limitations under the License. | |
| 21 */ | |
| 22 | |
| 23 #include "xfa/src/fxbarcode/common/BC_CommonBitSource.h" | |
| 24 #include "xfa/src/fxbarcode/common/BC_CommonDecoderResult.h" | |
| 25 #include "xfa/src/fxbarcode/datamatrix/BC_DataMatrixDecodedBitStreamParser.h" | |
| 26 | |
| 27 const FX_CHAR CBC_DataMatrixDecodedBitStreamParser::C40_BASIC_SET_CHARS[] = { | |
| 28 '*', '*', '*', ' ', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', | |
| 29 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', | |
| 30 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z'}; | |
| 31 const FX_CHAR CBC_DataMatrixDecodedBitStreamParser::C40_SHIFT2_SET_CHARS[] = { | |
| 32 '!', '"', '#', '$', '%', '&', '\'', '(', ')', '*', '+', ',', '-', '.', | |
| 33 '/', ':', ';', '<', '=', '>', '?', '@', '[', '\\', ']', '^', '_'}; | |
| 34 const FX_CHAR CBC_DataMatrixDecodedBitStreamParser::TEXT_BASIC_SET_CHARS[] = { | |
| 35 '*', '*', '*', ' ', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', | |
| 36 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', | |
| 37 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z'}; | |
| 38 const FX_CHAR CBC_DataMatrixDecodedBitStreamParser::TEXT_SHIFT3_SET_CHARS[] = { | |
| 39 '\'', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', | |
| 40 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', | |
| 41 'V', 'W', 'X', 'Y', 'Z', '{', '|', '}', '~', (FX_CHAR)127}; | |
| 42 const int32_t CBC_DataMatrixDecodedBitStreamParser::PAD_ENCODE = 0; | |
| 43 const int32_t CBC_DataMatrixDecodedBitStreamParser::ASCII_ENCODE = 1; | |
| 44 const int32_t CBC_DataMatrixDecodedBitStreamParser::C40_ENCODE = 2; | |
| 45 const int32_t CBC_DataMatrixDecodedBitStreamParser::TEXT_ENCODE = 3; | |
| 46 const int32_t CBC_DataMatrixDecodedBitStreamParser::ANSIX12_ENCODE = 4; | |
| 47 const int32_t CBC_DataMatrixDecodedBitStreamParser::EDIFACT_ENCODE = 5; | |
| 48 const int32_t CBC_DataMatrixDecodedBitStreamParser::BASE256_ENCODE = 6; | |
| 49 CBC_DataMatrixDecodedBitStreamParser::CBC_DataMatrixDecodedBitStreamParser() {} | |
| 50 CBC_DataMatrixDecodedBitStreamParser::~CBC_DataMatrixDecodedBitStreamParser() {} | |
| 51 CBC_CommonDecoderResult* CBC_DataMatrixDecodedBitStreamParser::Decode( | |
| 52 CFX_ByteArray& bytes, | |
| 53 int32_t& e) { | |
| 54 CBC_CommonBitSource bits(&bytes); | |
| 55 CFX_ByteString result; | |
| 56 CFX_ByteString resultTrailer; | |
| 57 CFX_Int32Array byteSegments; | |
| 58 int32_t mode = ASCII_ENCODE; | |
| 59 do { | |
| 60 if (mode == 1) { | |
| 61 mode = DecodeAsciiSegment(&bits, result, resultTrailer, e); | |
| 62 BC_EXCEPTION_CHECK_ReturnValue(e, NULL); | |
| 63 } else { | |
| 64 switch (mode) { | |
| 65 case 2: | |
| 66 DecodeC40Segment(&bits, result, e); | |
| 67 BC_EXCEPTION_CHECK_ReturnValue(e, NULL); | |
| 68 break; | |
| 69 case 3: | |
| 70 DecodeTextSegment(&bits, result, e); | |
| 71 BC_EXCEPTION_CHECK_ReturnValue(e, NULL); | |
| 72 break; | |
| 73 case 4: | |
| 74 DecodeAnsiX12Segment(&bits, result, e); | |
| 75 BC_EXCEPTION_CHECK_ReturnValue(e, NULL); | |
| 76 break; | |
| 77 case 5: | |
| 78 DecodeEdifactSegment(&bits, result, e); | |
| 79 BC_EXCEPTION_CHECK_ReturnValue(e, NULL); | |
| 80 break; | |
| 81 case 6: | |
| 82 DecodeBase256Segment(&bits, result, byteSegments, e); | |
| 83 BC_EXCEPTION_CHECK_ReturnValue(e, NULL); | |
| 84 break; | |
| 85 default: | |
| 86 e = BCExceptionFormatException; | |
| 87 return NULL; | |
| 88 } | |
| 89 mode = ASCII_ENCODE; | |
| 90 } | |
| 91 } while (mode != PAD_ENCODE && bits.Available() > 0); | |
| 92 if (resultTrailer.GetLength() > 0) { | |
| 93 result += resultTrailer; | |
| 94 } | |
| 95 CBC_CommonDecoderResult* tempCp = new CBC_CommonDecoderResult(); | |
| 96 tempCp->Init(bytes, result, | |
| 97 (byteSegments.GetSize() <= 0) ? CFX_Int32Array() : byteSegments, | |
| 98 NULL, e); | |
| 99 BC_EXCEPTION_CHECK_ReturnValue(e, NULL); | |
| 100 return tempCp; | |
| 101 } | |
| 102 int32_t CBC_DataMatrixDecodedBitStreamParser::DecodeAsciiSegment( | |
| 103 CBC_CommonBitSource* bits, | |
| 104 CFX_ByteString& result, | |
| 105 CFX_ByteString& resultTrailer, | |
| 106 int32_t& e) { | |
| 107 FX_CHAR buffer[128]; | |
| 108 FX_BOOL upperShift = FALSE; | |
| 109 do { | |
| 110 int32_t oneByte = bits->ReadBits(8, e); | |
| 111 BC_EXCEPTION_CHECK_ReturnValue(e, 0); | |
| 112 if (oneByte == 0) { | |
| 113 e = BCExceptionFormatException; | |
| 114 return 0; | |
| 115 } else if (oneByte <= 128) { | |
| 116 oneByte = upperShift ? oneByte + 128 : oneByte; | |
| 117 upperShift = FALSE; | |
| 118 result += ((FX_CHAR)(oneByte - 1)); | |
| 119 return ASCII_ENCODE; | |
| 120 } else if (oneByte == 129) { | |
| 121 return PAD_ENCODE; | |
| 122 } else if (oneByte <= 229) { | |
| 123 int32_t value = oneByte - 130; | |
| 124 FXSYS_itoa(value, buffer, 10); | |
| 125 if (value < 10) { | |
| 126 result += '0'; | |
| 127 buffer[1] = '\0'; | |
| 128 } else { | |
| 129 buffer[2] = '\0'; | |
| 130 } | |
| 131 result += buffer; | |
| 132 } else if (oneByte == 230) { | |
| 133 return C40_ENCODE; | |
| 134 } else if (oneByte == 231) { | |
| 135 return BASE256_ENCODE; | |
| 136 } else if (oneByte == 232 || oneByte == 233 || oneByte == 234) { | |
| 137 } else if (oneByte == 235) { | |
| 138 upperShift = TRUE; | |
| 139 } else if (oneByte == 236) { | |
| 140 result += "[)>"; | |
| 141 result += 0x1E; | |
| 142 result += "05"; | |
| 143 result += 0x1D; | |
| 144 resultTrailer.Insert(0, 0x1E); | |
| 145 resultTrailer.Insert(0 + 1, 0x04); | |
| 146 } else if (oneByte == 237) { | |
| 147 result += "[)>"; | |
| 148 result += 0x1E; | |
| 149 result += "06"; | |
| 150 result += 0x1D; | |
| 151 resultTrailer.Insert(0, 0x1E); | |
| 152 resultTrailer.Insert(0 + 1, 0x04); | |
| 153 } else if (oneByte == 238) { | |
| 154 return ANSIX12_ENCODE; | |
| 155 } else if (oneByte == 239) { | |
| 156 return TEXT_ENCODE; | |
| 157 } else if (oneByte == 240) { | |
| 158 return EDIFACT_ENCODE; | |
| 159 } else if (oneByte == 241) { | |
| 160 } else if (oneByte >= 242) { | |
| 161 if (oneByte == 254 && bits->Available() == 0) { | |
| 162 } else { | |
| 163 e = BCExceptionFormatException; | |
| 164 return 0; | |
| 165 } | |
| 166 } | |
| 167 } while (bits->Available() > 0); | |
| 168 return ASCII_ENCODE; | |
| 169 } | |
| 170 void CBC_DataMatrixDecodedBitStreamParser::DecodeC40Segment( | |
| 171 CBC_CommonBitSource* bits, | |
| 172 CFX_ByteString& result, | |
| 173 int32_t& e) { | |
| 174 FX_BOOL upperShift = FALSE; | |
| 175 CFX_Int32Array cValues; | |
| 176 cValues.SetSize(3); | |
| 177 do { | |
| 178 if (bits->Available() == 8) { | |
| 179 return; | |
| 180 } | |
| 181 int32_t firstByte = bits->ReadBits(8, e); | |
| 182 BC_EXCEPTION_CHECK_ReturnVoid(e); | |
| 183 if (firstByte == 254) { | |
| 184 return; | |
| 185 } | |
| 186 int32_t tempp = bits->ReadBits(8, e); | |
| 187 BC_EXCEPTION_CHECK_ReturnVoid(e); | |
| 188 ParseTwoBytes(firstByte, tempp, cValues); | |
| 189 int32_t shift = 0; | |
| 190 int32_t i; | |
| 191 for (i = 0; i < 3; i++) { | |
| 192 int32_t cValue = cValues[i]; | |
| 193 switch (shift) { | |
| 194 case 0: | |
| 195 if (cValue < 3) { | |
| 196 shift = cValue + 1; | |
| 197 } else if (cValue < 27) { | |
| 198 FX_CHAR c40char = C40_BASIC_SET_CHARS[cValue]; | |
| 199 if (upperShift) { | |
| 200 result += (FX_CHAR)(c40char + 128); | |
| 201 upperShift = FALSE; | |
| 202 } else { | |
| 203 result += c40char; | |
| 204 } | |
| 205 } else { | |
| 206 e = BCExceptionFormatException; | |
| 207 return; | |
| 208 } | |
| 209 break; | |
| 210 case 1: | |
| 211 if (upperShift) { | |
| 212 result += (FX_CHAR)(cValue + 128); | |
| 213 upperShift = FALSE; | |
| 214 } else { | |
| 215 result += cValue; | |
| 216 } | |
| 217 shift = 0; | |
| 218 break; | |
| 219 case 2: | |
| 220 if (cValue < 27) { | |
| 221 FX_CHAR c40char = C40_SHIFT2_SET_CHARS[cValue]; | |
| 222 if (upperShift) { | |
| 223 result += (FX_CHAR)(c40char + 128); | |
| 224 upperShift = FALSE; | |
| 225 } else { | |
| 226 result += c40char; | |
| 227 } | |
| 228 } else if (cValue == 27) { | |
| 229 e = BCExceptionFormatException; | |
| 230 return; | |
| 231 } else if (cValue == 30) { | |
| 232 upperShift = TRUE; | |
| 233 } else { | |
| 234 e = BCExceptionFormatException; | |
| 235 return; | |
| 236 } | |
| 237 shift = 0; | |
| 238 break; | |
| 239 case 3: | |
| 240 if (upperShift) { | |
| 241 result += (FX_CHAR)(cValue + 224); | |
| 242 upperShift = FALSE; | |
| 243 } else { | |
| 244 result += (FX_CHAR)(cValue + 96); | |
| 245 } | |
| 246 shift = 0; | |
| 247 break; | |
| 248 default: | |
| 249 break; | |
| 250 e = BCExceptionFormatException; | |
| 251 return; | |
| 252 } | |
| 253 } | |
| 254 } while (bits->Available() > 0); | |
| 255 } | |
| 256 void CBC_DataMatrixDecodedBitStreamParser::DecodeTextSegment( | |
| 257 CBC_CommonBitSource* bits, | |
| 258 CFX_ByteString& result, | |
| 259 int32_t& e) { | |
| 260 FX_BOOL upperShift = FALSE; | |
| 261 CFX_Int32Array cValues; | |
| 262 cValues.SetSize(3); | |
| 263 int32_t shift = 0; | |
| 264 do { | |
| 265 if (bits->Available() == 8) { | |
| 266 return; | |
| 267 } | |
| 268 int32_t firstByte = bits->ReadBits(8, e); | |
| 269 BC_EXCEPTION_CHECK_ReturnVoid(e); | |
| 270 if (firstByte == 254) { | |
| 271 return; | |
| 272 } | |
| 273 int32_t inTp = bits->ReadBits(8, e); | |
| 274 BC_EXCEPTION_CHECK_ReturnVoid(e); | |
| 275 ParseTwoBytes(firstByte, inTp, cValues); | |
| 276 for (int32_t i = 0; i < 3; i++) { | |
| 277 int32_t cValue = cValues[i]; | |
| 278 switch (shift) { | |
| 279 case 0: | |
| 280 if (cValue < 3) { | |
| 281 shift = cValue + 1; | |
| 282 } else if (cValue < 40) { | |
| 283 FX_CHAR textChar = TEXT_BASIC_SET_CHARS[cValue]; | |
| 284 if (upperShift) { | |
| 285 result += (FX_CHAR)(textChar + 128); | |
| 286 upperShift = FALSE; | |
| 287 } else { | |
| 288 result += textChar; | |
| 289 } | |
| 290 } else { | |
| 291 e = BCExceptionFormatException; | |
| 292 return; | |
| 293 } | |
| 294 break; | |
| 295 case 1: | |
| 296 if (upperShift) { | |
| 297 result += (FX_CHAR)(cValue + 128); | |
| 298 upperShift = FALSE; | |
| 299 } else { | |
| 300 result += cValue; | |
| 301 } | |
| 302 shift = 0; | |
| 303 break; | |
| 304 case 2: | |
| 305 if (cValue < 27) { | |
| 306 FX_CHAR c40char = C40_SHIFT2_SET_CHARS[cValue]; | |
| 307 if (upperShift) { | |
| 308 result += (FX_CHAR)(c40char + 128); | |
| 309 upperShift = FALSE; | |
| 310 } else { | |
| 311 result += c40char; | |
| 312 } | |
| 313 } else if (cValue == 27) { | |
| 314 e = BCExceptionFormatException; | |
| 315 return; | |
| 316 } else if (cValue == 30) { | |
| 317 upperShift = TRUE; | |
| 318 } else { | |
| 319 e = BCExceptionFormatException; | |
| 320 return; | |
| 321 } | |
| 322 shift = 0; | |
| 323 break; | |
| 324 case 3: | |
| 325 if (cValue < 19) { | |
| 326 FX_CHAR textChar = TEXT_SHIFT3_SET_CHARS[cValue]; | |
| 327 if (upperShift) { | |
| 328 result += (FX_CHAR)(textChar + 128); | |
| 329 upperShift = FALSE; | |
| 330 } else { | |
| 331 result += textChar; | |
| 332 } | |
| 333 shift = 0; | |
| 334 } else { | |
| 335 e = BCExceptionFormatException; | |
| 336 return; | |
| 337 } | |
| 338 break; | |
| 339 default: | |
| 340 break; | |
| 341 e = BCExceptionFormatException; | |
| 342 return; | |
| 343 } | |
| 344 } | |
| 345 } while (bits->Available() > 0); | |
| 346 } | |
| 347 void CBC_DataMatrixDecodedBitStreamParser::DecodeAnsiX12Segment( | |
| 348 CBC_CommonBitSource* bits, | |
| 349 CFX_ByteString& result, | |
| 350 int32_t& e) { | |
| 351 CFX_Int32Array cValues; | |
| 352 cValues.SetSize(3); | |
| 353 do { | |
| 354 if (bits->Available() == 8) { | |
| 355 return; | |
| 356 } | |
| 357 int32_t firstByte = bits->ReadBits(8, e); | |
| 358 BC_EXCEPTION_CHECK_ReturnVoid(e); | |
| 359 if (firstByte == 254) { | |
| 360 return; | |
| 361 } | |
| 362 int32_t iTemp1 = bits->ReadBits(8, e); | |
| 363 BC_EXCEPTION_CHECK_ReturnVoid(e); | |
| 364 ParseTwoBytes(firstByte, iTemp1, cValues); | |
| 365 int32_t i; | |
| 366 for (i = 0; i < 3; i++) { | |
| 367 int32_t cValue = cValues[i]; | |
| 368 if (cValue == 0) { | |
| 369 BC_FX_ByteString_Append(result, 1, '\r'); | |
| 370 } else if (cValue == 1) { | |
| 371 BC_FX_ByteString_Append(result, 1, '*'); | |
| 372 } else if (cValue == 2) { | |
| 373 BC_FX_ByteString_Append(result, 1, '>'); | |
| 374 } else if (cValue == 3) { | |
| 375 BC_FX_ByteString_Append(result, 1, ' '); | |
| 376 } else if (cValue < 14) { | |
| 377 BC_FX_ByteString_Append(result, 1, (FX_CHAR)(cValue + 44)); | |
| 378 } else if (cValue < 40) { | |
| 379 BC_FX_ByteString_Append(result, 1, (FX_CHAR)(cValue + 51)); | |
| 380 } else { | |
| 381 e = BCExceptionFormatException; | |
| 382 return; | |
| 383 } | |
| 384 } | |
| 385 } while (bits->Available() > 0); | |
| 386 } | |
| 387 void CBC_DataMatrixDecodedBitStreamParser::ParseTwoBytes( | |
| 388 int32_t firstByte, | |
| 389 int32_t secondByte, | |
| 390 CFX_Int32Array& result) { | |
| 391 int32_t fullBitValue = (firstByte << 8) + secondByte - 1; | |
| 392 int32_t temp = fullBitValue / 1600; | |
| 393 result[0] = temp; | |
| 394 fullBitValue -= temp * 1600; | |
| 395 temp = fullBitValue / 40; | |
| 396 result[1] = temp; | |
| 397 result[2] = fullBitValue - temp * 40; | |
| 398 } | |
| 399 | |
| 400 void CBC_DataMatrixDecodedBitStreamParser::DecodeEdifactSegment( | |
| 401 CBC_CommonBitSource* bits, | |
| 402 CFX_ByteString& result, | |
| 403 int32_t& e) { | |
| 404 FX_CHAR buffer[128]; | |
| 405 FX_BOOL unlatch = FALSE; | |
| 406 do { | |
| 407 if (bits->Available() <= 16) | |
| 408 return; | |
| 409 | |
| 410 for (int32_t i = 0; i < 4; i++) { | |
| 411 int32_t edifactValue = bits->ReadBits(6, e); | |
| 412 BC_EXCEPTION_CHECK_ReturnVoid(e); | |
| 413 if (edifactValue == 0x1F) | |
| 414 unlatch = TRUE; | |
| 415 | |
| 416 if (!unlatch) { | |
| 417 if ((edifactValue & 32) == 0) | |
| 418 edifactValue |= 64; | |
| 419 result += FXSYS_itoa(edifactValue, buffer, 10); | |
| 420 } | |
| 421 } | |
| 422 } while (!unlatch && bits->Available() > 0); | |
| 423 } | |
| 424 | |
| 425 void CBC_DataMatrixDecodedBitStreamParser::DecodeBase256Segment( | |
| 426 CBC_CommonBitSource* bits, | |
| 427 CFX_ByteString& result, | |
| 428 CFX_Int32Array& byteSegments, | |
| 429 int32_t& e) { | |
| 430 int32_t codewordPosition = 1 + bits->getByteOffset(); | |
| 431 int32_t iTmp = bits->ReadBits(8, e); | |
| 432 BC_EXCEPTION_CHECK_ReturnVoid(e); | |
| 433 int32_t d1 = Unrandomize255State(iTmp, codewordPosition++); | |
| 434 int32_t count; | |
| 435 if (d1 == 0) { | |
| 436 count = bits->Available() / 8; | |
| 437 } else if (d1 < 250) { | |
| 438 count = d1; | |
| 439 } else { | |
| 440 int32_t iTmp3 = bits->ReadBits(8, e); | |
| 441 BC_EXCEPTION_CHECK_ReturnVoid(e); | |
| 442 count = 250 * (d1 - 249) + Unrandomize255State(iTmp3, codewordPosition++); | |
| 443 } | |
| 444 if (count < 0) { | |
| 445 e = BCExceptionFormatException; | |
| 446 return; | |
| 447 } | |
| 448 CFX_ByteArray* bytes = new CFX_ByteArray(); | |
| 449 bytes->SetSize(count); | |
| 450 int32_t i; | |
| 451 for (i = 0; i < count; i++) { | |
| 452 if (bits->Available() < 8) { | |
| 453 e = BCExceptionFormatException; | |
| 454 delete bytes; | |
| 455 return; | |
| 456 } | |
| 457 int32_t iTemp5 = bits->ReadBits(8, e); | |
| 458 if (e != BCExceptionNO) { | |
| 459 delete bytes; | |
| 460 return; | |
| 461 } | |
| 462 bytes->SetAt(i, Unrandomize255State(iTemp5, codewordPosition++)); | |
| 463 } | |
| 464 BC_FX_ByteString_Append(result, *bytes); | |
| 465 delete bytes; | |
| 466 } | |
| 467 uint8_t CBC_DataMatrixDecodedBitStreamParser::Unrandomize255State( | |
| 468 int32_t randomizedBase256Codeword, | |
| 469 int32_t base256CodewordPosition) { | |
| 470 int32_t pseudoRandomNumber = ((149 * base256CodewordPosition) % 255) + 1; | |
| 471 int32_t tempVariable = randomizedBase256Codeword - pseudoRandomNumber; | |
| 472 return (uint8_t)(tempVariable >= 0 ? tempVariable : tempVariable + 256); | |
| 473 } | |
| OLD | NEW |
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Chromium Code Reviews
Issue 1803723002:
Move xfa/src up to xfa/. (Closed)
Base URL: https://pdfium.googlesource.com/pdfium.git@master