1 // Copyright (C) 2016 and later: Unicode, Inc. and others. 2 // License & terms of use: http://www.unicode.org/copyright.html 3 /* 4 ********************************************************************** 5 * Copyright (C) 2010-2015, International Business Machines 6 * Corporation and others. All Rights Reserved. 7 ********************************************************************** 8 * file name: ucnv_ct.c 9 * encoding: US-ASCII 10 * tab size: 8 (not used) 11 * indentation:4 12 * 13 * created on: 2010Dec09 14 * created by: Michael Ow 15 */ 16 17 #include "unicode/utypes.h" 18 19 #if !UCONFIG_NO_CONVERSION && !UCONFIG_NO_LEGACY_CONVERSION && !UCONFIG_ONLY_HTML_CONVERSION 20 21 #include "unicode/ucnv.h" 22 #include "unicode/uset.h" 23 #include "unicode/ucnv_err.h" 24 #include "unicode/ucnv_cb.h" 25 #include "unicode/utf16.h" 26 #include "ucnv_imp.h" 27 #include "ucnv_bld.h" 28 #include "ucnv_cnv.h" 29 #include "ucnvmbcs.h" 30 #include "cstring.h" 31 #include "cmemory.h" 32 33 typedef enum { 34 INVALID = -2, 35 DO_SEARCH = -1, 36 37 COMPOUND_TEXT_SINGLE_0 = 0, 38 COMPOUND_TEXT_SINGLE_1 = 1, 39 COMPOUND_TEXT_SINGLE_2 = 2, 40 COMPOUND_TEXT_SINGLE_3 = 3, 41 42 COMPOUND_TEXT_DOUBLE_1 = 4, 43 COMPOUND_TEXT_DOUBLE_2 = 5, 44 COMPOUND_TEXT_DOUBLE_3 = 6, 45 COMPOUND_TEXT_DOUBLE_4 = 7, 46 COMPOUND_TEXT_DOUBLE_5 = 8, 47 COMPOUND_TEXT_DOUBLE_6 = 9, 48 COMPOUND_TEXT_DOUBLE_7 = 10, 49 50 COMPOUND_TEXT_TRIPLE_DOUBLE = 11, 51 52 IBM_915 = 12, 53 IBM_916 = 13, 54 IBM_914 = 14, 55 IBM_874 = 15, 56 IBM_912 = 16, 57 IBM_913 = 17, 58 ISO_8859_14 = 18, 59 IBM_923 = 19, 60 NUM_OF_CONVERTERS = 20 61 } COMPOUND_TEXT_CONVERTERS; 62 63 #define SEARCH_LENGTH 12 64 65 static const uint8_t escSeqCompoundText[NUM_OF_CONVERTERS][5] = { 66 /* Single */ 67 { 0x1B, 0x2D, 0x41, 0, 0 }, 68 { 0x1B, 0x2D, 0x4D, 0, 0 }, 69 { 0x1B, 0x2D, 0x46, 0, 0 }, 70 { 0x1B, 0x2D, 0x47, 0, 0 }, 71 72 /* Double */ 73 { 0x1B, 0x24, 0x29, 0x41, 0 }, 74 { 0x1B, 0x24, 0x29, 0x42, 0 }, 75 { 0x1B, 0x24, 0x29, 0x43, 0 }, 76 { 0x1B, 0x24, 0x29, 0x44, 0 }, 77 { 0x1B, 0x24, 0x29, 0x47, 0 }, 78 { 0x1B, 0x24, 0x29, 0x48, 0 }, 79 { 0x1B, 0x24, 0x29, 0x49, 0 }, 80 81 /* Triple/Double */ 82 { 0x1B, 0x25, 0x47, 0, 0 }, 83 84 /*IBM-915*/ 85 { 0x1B, 0x2D, 0x4C, 0, 0 }, 86 /*IBM-916*/ 87 { 0x1B, 0x2D, 0x48, 0, 0 }, 88 /*IBM-914*/ 89 { 0x1B, 0x2D, 0x44, 0, 0 }, 90 /*IBM-874*/ 91 { 0x1B, 0x2D, 0x54, 0, 0 }, 92 /*IBM-912*/ 93 { 0x1B, 0x2D, 0x42, 0, 0 }, 94 /* IBM-913 */ 95 { 0x1B, 0x2D, 0x43, 0, 0 }, 96 /* ISO-8859_14 */ 97 { 0x1B, 0x2D, 0x5F, 0, 0 }, 98 /* IBM-923 */ 99 { 0x1B, 0x2D, 0x62, 0, 0 }, 100 }; 101 102 #define ESC_START 0x1B 103 104 #define isASCIIRange(codepoint) \ 105 ((codepoint == 0x0000) || (codepoint == 0x0009) || (codepoint == 0x000A) || \ 106 (codepoint >= 0x0020 && codepoint <= 0x007f) || (codepoint >= 0x00A0 && codepoint <= 0x00FF)) 107 108 #define isIBM915(codepoint) \ 109 ((codepoint >= 0x0401 && codepoint <= 0x045F) || (codepoint == 0x2116)) 110 111 #define isIBM916(codepoint) \ 112 ((codepoint >= 0x05D0 && codepoint <= 0x05EA) || (codepoint == 0x2017) || (codepoint == 0x203E)) 113 114 #define isCompoundS3(codepoint) \ 115 ((codepoint == 0x060C) || (codepoint == 0x061B) || (codepoint == 0x061F) || (codepoint >= 0x0621 && codepoint <= 0x063A) || \ 116 (codepoint >= 0x0640 && codepoint <= 0x0652) || (codepoint >= 0x0660 && codepoint <= 0x066D) || (codepoint == 0x200B) || \ 117 (codepoint >= 0x0FE70 && codepoint <= 0x0FE72) || (codepoint == 0x0FE74) || (codepoint >= 0x0FE76 && codepoint <= 0x0FEBE)) 118 119 #define isCompoundS2(codepoint) \ 120 ((codepoint == 0x02BC) || (codepoint == 0x02BD) || (codepoint >= 0x0384 && codepoint <= 0x03CE) || (codepoint == 0x2015)) 121 122 #define isIBM914(codepoint) \ 123 ((codepoint == 0x0100) || (codepoint == 0x0101) || (codepoint == 0x0112) || (codepoint == 0x0113) || (codepoint == 0x0116) || (codepoint == 0x0117) || \ 124 (codepoint == 0x0122) || (codepoint == 0x0123) || (codepoint >= 0x0128 && codepoint <= 0x012B) || (codepoint == 0x012E) || (codepoint == 0x012F) || \ 125 (codepoint >= 0x0136 && codepoint <= 0x0138) || (codepoint == 0x013B) || (codepoint == 0x013C) || (codepoint == 0x0145) || (codepoint == 0x0146) || \ 126 (codepoint >= 0x014A && codepoint <= 0x014D) || (codepoint == 0x0156) || (codepoint == 0x0157) || (codepoint >= 0x0166 && codepoint <= 0x016B) || \ 127 (codepoint == 0x0172) || (codepoint == 0x0173)) 128 129 #define isIBM874(codepoint) \ 130 ((codepoint >= 0x0E01 && codepoint <= 0x0E3A) || (codepoint >= 0x0E3F && codepoint <= 0x0E5B)) 131 132 #define isIBM912(codepoint) \ 133 ((codepoint >= 0x0102 && codepoint <= 0x0107) || (codepoint >= 0x010C && codepoint <= 0x0111) || (codepoint >= 0x0118 && codepoint <= 0x011B) || \ 134 (codepoint == 0x0139) || (codepoint == 0x013A) || (codepoint == 0x013D) || (codepoint == 0x013E) || (codepoint >= 0x0141 && codepoint <= 0x0144) || \ 135 (codepoint == 0x0147) || (codepoint == 0x0147) || (codepoint == 0x0150) || (codepoint == 0x0151) || (codepoint == 0x0154) || (codepoint == 0x0155) || \ 136 (codepoint >= 0x0158 && codepoint <= 0x015B) || (codepoint == 0x015E) || (codepoint == 0x015F) || (codepoint >= 0x0160 && codepoint <= 0x0165) || \ 137 (codepoint == 0x016E) || (codepoint == 0x016F) || (codepoint == 0x0170) || (codepoint == 0x0171) || (codepoint >= 0x0179 && codepoint <= 0x017E) || \ 138 (codepoint == 0x02C7) || (codepoint == 0x02D8) || (codepoint == 0x02D9) || (codepoint == 0x02DB) || (codepoint == 0x02DD)) 139 140 #define isIBM913(codepoint) \ 141 ((codepoint >= 0x0108 && codepoint <= 0x010B) || (codepoint == 0x011C) || \ 142 (codepoint == 0x011D) || (codepoint == 0x0120) || (codepoint == 0x0121) || \ 143 (codepoint >= 0x0124 && codepoint <= 0x0127) || (codepoint == 0x0134) || (codepoint == 0x0135) || \ 144 (codepoint == 0x015C) || (codepoint == 0x015D) || (codepoint == 0x016C) || (codepoint == 0x016D)) 145 146 #define isCompoundS1(codepoint) \ 147 ((codepoint == 0x011E) || (codepoint == 0x011F) || (codepoint == 0x0130) || \ 148 (codepoint == 0x0131) || (codepoint >= 0x0218 && codepoint <= 0x021B)) 149 150 #define isISO8859_14(codepoint) \ 151 ((codepoint >= 0x0174 && codepoint <= 0x0177) || (codepoint == 0x1E0A) || \ 152 (codepoint == 0x1E0B) || (codepoint == 0x1E1E) || (codepoint == 0x1E1F) || \ 153 (codepoint == 0x1E40) || (codepoint == 0x1E41) || (codepoint == 0x1E56) || \ 154 (codepoint == 0x1E57) || (codepoint == 0x1E60) || (codepoint == 0x1E61) || \ 155 (codepoint == 0x1E6A) || (codepoint == 0x1E6B) || (codepoint == 0x1EF2) || \ 156 (codepoint == 0x1EF3) || (codepoint >= 0x1E80 && codepoint <= 0x1E85)) 157 158 #define isIBM923(codepoint) \ 159 ((codepoint == 0x0152) || (codepoint == 0x0153) || (codepoint == 0x0178) || (codepoint == 0x20AC)) 160 161 162 typedef struct{ 163 UConverterSharedData *myConverterArray[NUM_OF_CONVERTERS]; 164 COMPOUND_TEXT_CONVERTERS state; 165 } UConverterDataCompoundText; 166 167 /*********** Compound Text Converter Protos ***********/ 168 static void 169 _CompoundTextOpen(UConverter *cnv, UConverterLoadArgs *pArgs, UErrorCode *errorCode); 170 171 static void 172 _CompoundTextClose(UConverter *converter); 173 174 static void 175 _CompoundTextReset(UConverter *converter, UConverterResetChoice choice); 176 177 static const char* 178 _CompoundTextgetName(const UConverter* cnv); 179 180 181 static int32_t findNextEsc(const char *source, const char *sourceLimit) { 182 int32_t length = sourceLimit - source; 183 int32_t i; 184 for (i = 1; i < length; i++) { 185 if (*(source + i) == 0x1B) { 186 return i; 187 } 188 } 189 190 return length; 191 } 192 193 static COMPOUND_TEXT_CONVERTERS getState(int codepoint) { 194 COMPOUND_TEXT_CONVERTERS state = DO_SEARCH; 195 196 if (isASCIIRange(codepoint)) { 197 state = COMPOUND_TEXT_SINGLE_0; 198 } else if (isIBM912(codepoint)) { 199 state = IBM_912; 200 }else if (isIBM913(codepoint)) { 201 state = IBM_913; 202 } else if (isISO8859_14(codepoint)) { 203 state = ISO_8859_14; 204 } else if (isIBM923(codepoint)) { 205 state = IBM_923; 206 } else if (isIBM874(codepoint)) { 207 state = IBM_874; 208 } else if (isIBM914(codepoint)) { 209 state = IBM_914; 210 } else if (isCompoundS2(codepoint)) { 211 state = COMPOUND_TEXT_SINGLE_2; 212 } else if (isCompoundS3(codepoint)) { 213 state = COMPOUND_TEXT_SINGLE_3; 214 } else if (isIBM916(codepoint)) { 215 state = IBM_916; 216 } else if (isIBM915(codepoint)) { 217 state = IBM_915; 218 } else if (isCompoundS1(codepoint)) { 219 state = COMPOUND_TEXT_SINGLE_1; 220 } 221 222 return state; 223 } 224 225 static COMPOUND_TEXT_CONVERTERS findStateFromEscSeq(const char* source, const char* sourceLimit, const uint8_t* toUBytesBuffer, int32_t toUBytesBufferLength, UErrorCode *err) { 226 COMPOUND_TEXT_CONVERTERS state = INVALID; 227 UBool matchFound = FALSE; 228 int32_t i, n, offset = toUBytesBufferLength; 229 230 for (i = 0; i < NUM_OF_CONVERTERS; i++) { 231 matchFound = TRUE; 232 for (n = 0; escSeqCompoundText[i][n] != 0; n++) { 233 if (n < toUBytesBufferLength) { 234 if (toUBytesBuffer[n] != escSeqCompoundText[i][n]) { 235 matchFound = FALSE; 236 break; 237 } 238 } else if ((source + (n - offset)) >= sourceLimit) { 239 *err = U_TRUNCATED_CHAR_FOUND; 240 matchFound = FALSE; 241 break; 242 } else if (*(source + (n - offset)) != escSeqCompoundText[i][n]) { 243 matchFound = FALSE; 244 break; 245 } 246 } 247 248 if (matchFound) { 249 break; 250 } 251 } 252 253 if (matchFound) { 254 state = (COMPOUND_TEXT_CONVERTERS)i; 255 } 256 257 return state; 258 } 259 260 static void 261 _CompoundTextOpen(UConverter *cnv, UConverterLoadArgs *pArgs, UErrorCode *errorCode){ 262 cnv->extraInfo = uprv_malloc (sizeof (UConverterDataCompoundText)); 263 if (cnv->extraInfo != NULL) { 264 UConverterDataCompoundText *myConverterData = (UConverterDataCompoundText *) cnv->extraInfo; 265 266 UConverterNamePieces stackPieces; 267 UConverterLoadArgs stackArgs={ (int32_t)sizeof(UConverterLoadArgs) }; 268 269 myConverterData->myConverterArray[COMPOUND_TEXT_SINGLE_0] = NULL; 270 myConverterData->myConverterArray[COMPOUND_TEXT_SINGLE_1] = ucnv_loadSharedData("icu-internal-compound-s1", &stackPieces, &stackArgs, errorCode); 271 myConverterData->myConverterArray[COMPOUND_TEXT_SINGLE_2] = ucnv_loadSharedData("icu-internal-compound-s2", &stackPieces, &stackArgs, errorCode); 272 myConverterData->myConverterArray[COMPOUND_TEXT_SINGLE_3] = ucnv_loadSharedData("icu-internal-compound-s3", &stackPieces, &stackArgs, errorCode); 273 myConverterData->myConverterArray[COMPOUND_TEXT_DOUBLE_1] = ucnv_loadSharedData("icu-internal-compound-d1", &stackPieces, &stackArgs, errorCode); 274 myConverterData->myConverterArray[COMPOUND_TEXT_DOUBLE_2] = ucnv_loadSharedData("icu-internal-compound-d2", &stackPieces, &stackArgs, errorCode); 275 myConverterData->myConverterArray[COMPOUND_TEXT_DOUBLE_3] = ucnv_loadSharedData("icu-internal-compound-d3", &stackPieces, &stackArgs, errorCode); 276 myConverterData->myConverterArray[COMPOUND_TEXT_DOUBLE_4] = ucnv_loadSharedData("icu-internal-compound-d4", &stackPieces, &stackArgs, errorCode); 277 myConverterData->myConverterArray[COMPOUND_TEXT_DOUBLE_5] = ucnv_loadSharedData("icu-internal-compound-d5", &stackPieces, &stackArgs, errorCode); 278 myConverterData->myConverterArray[COMPOUND_TEXT_DOUBLE_6] = ucnv_loadSharedData("icu-internal-compound-d6", &stackPieces, &stackArgs, errorCode); 279 myConverterData->myConverterArray[COMPOUND_TEXT_DOUBLE_7] = ucnv_loadSharedData("icu-internal-compound-d7", &stackPieces, &stackArgs, errorCode); 280 myConverterData->myConverterArray[COMPOUND_TEXT_TRIPLE_DOUBLE] = ucnv_loadSharedData("icu-internal-compound-t", &stackPieces, &stackArgs, errorCode); 281 282 myConverterData->myConverterArray[IBM_915] = ucnv_loadSharedData("ibm-915_P100-1995", &stackPieces, &stackArgs, errorCode); 283 myConverterData->myConverterArray[IBM_916] = ucnv_loadSharedData("ibm-916_P100-1995", &stackPieces, &stackArgs, errorCode); 284 myConverterData->myConverterArray[IBM_914] = ucnv_loadSharedData("ibm-914_P100-1995", &stackPieces, &stackArgs, errorCode); 285 myConverterData->myConverterArray[IBM_874] = ucnv_loadSharedData("ibm-874_P100-1995", &stackPieces, &stackArgs, errorCode); 286 myConverterData->myConverterArray[IBM_912] = ucnv_loadSharedData("ibm-912_P100-1995", &stackPieces, &stackArgs, errorCode); 287 myConverterData->myConverterArray[IBM_913] = ucnv_loadSharedData("ibm-913_P100-2000", &stackPieces, &stackArgs, errorCode); 288 myConverterData->myConverterArray[ISO_8859_14] = ucnv_loadSharedData("iso-8859_14-1998", &stackPieces, &stackArgs, errorCode); 289 myConverterData->myConverterArray[IBM_923] = ucnv_loadSharedData("ibm-923_P100-1998", &stackPieces, &stackArgs, errorCode); 290 291 if (U_FAILURE(*errorCode) || pArgs->onlyTestIsLoadable) { 292 _CompoundTextClose(cnv); 293 return; 294 } 295 296 myConverterData->state = (COMPOUND_TEXT_CONVERTERS)0; 297 } else { 298 *errorCode = U_MEMORY_ALLOCATION_ERROR; 299 } 300 } 301 302 303 static void 304 _CompoundTextClose(UConverter *converter) { 305 UConverterDataCompoundText* myConverterData = (UConverterDataCompoundText*)(converter->extraInfo); 306 int32_t i; 307 308 if (converter->extraInfo != NULL) { 309 /*close the array of converter pointers and free the memory*/ 310 for (i = 0; i < NUM_OF_CONVERTERS; i++) { 311 if (myConverterData->myConverterArray[i] != NULL) { 312 ucnv_unloadSharedDataIfReady(myConverterData->myConverterArray[i]); 313 } 314 } 315 316 uprv_free(converter->extraInfo); 317 } 318 } 319 320 static void 321 _CompoundTextReset(UConverter *converter, UConverterResetChoice choice) { 322 } 323 324 static const char* 325 _CompoundTextgetName(const UConverter* cnv){ 326 return "x11-compound-text"; 327 } 328 329 static void 330 UConverter_fromUnicode_CompoundText_OFFSETS(UConverterFromUnicodeArgs* args, UErrorCode* err){ 331 UConverter *cnv = args->converter; 332 uint8_t *target = (uint8_t *) args->target; 333 const uint8_t *targetLimit = (const uint8_t *) args->targetLimit; 334 const UChar* source = args->source; 335 const UChar* sourceLimit = args->sourceLimit; 336 /* int32_t* offsets = args->offsets; */ 337 UChar32 sourceChar; 338 UBool useFallback = cnv->useFallback; 339 uint8_t tmpTargetBuffer[7]; 340 int32_t tmpTargetBufferLength = 0; 341 COMPOUND_TEXT_CONVERTERS currentState, tmpState; 342 uint32_t pValue; 343 int32_t pValueLength = 0; 344 int32_t i, n, j; 345 346 UConverterDataCompoundText *myConverterData = (UConverterDataCompoundText *) cnv->extraInfo; 347 348 currentState = myConverterData->state; 349 350 /* check if the last codepoint of previous buffer was a lead surrogate*/ 351 if((sourceChar = cnv->fromUChar32)!=0 && target< targetLimit) { 352 goto getTrail; 353 } 354 355 while( source < sourceLimit){ 356 if(target < targetLimit){ 357 358 sourceChar = *(source++); 359 /*check if the char is a First surrogate*/ 360 if(U16_IS_SURROGATE(sourceChar)) { 361 if(U16_IS_SURROGATE_LEAD(sourceChar)) { 362 getTrail: 363 /*look ahead to find the trail surrogate*/ 364 if(source < sourceLimit) { 365 /* test the following code unit */ 366 UChar trail=(UChar) *source; 367 if(U16_IS_TRAIL(trail)) { 368 source++; 369 sourceChar=U16_GET_SUPPLEMENTARY(sourceChar, trail); 370 cnv->fromUChar32=0x00; 371 /* convert this supplementary code point */ 372 /* exit this condition tree */ 373 } else { 374 /* this is an unmatched lead code unit (1st surrogate) */ 375 /* callback(illegal) */ 376 *err=U_ILLEGAL_CHAR_FOUND; 377 cnv->fromUChar32=sourceChar; 378 break; 379 } 380 } else { 381 /* no more input */ 382 cnv->fromUChar32=sourceChar; 383 break; 384 } 385 } else { 386 /* this is an unmatched trail code unit (2nd surrogate) */ 387 /* callback(illegal) */ 388 *err=U_ILLEGAL_CHAR_FOUND; 389 cnv->fromUChar32=sourceChar; 390 break; 391 } 392 } 393 394 tmpTargetBufferLength = 0; 395 tmpState = getState(sourceChar); 396 397 if (tmpState != DO_SEARCH && currentState != tmpState) { 398 /* Get escape sequence if necessary */ 399 currentState = tmpState; 400 for (i = 0; escSeqCompoundText[currentState][i] != 0; i++) { 401 tmpTargetBuffer[tmpTargetBufferLength++] = escSeqCompoundText[currentState][i]; 402 } 403 } 404 405 if (tmpState == DO_SEARCH) { 406 /* Test all available converters */ 407 for (i = 1; i < SEARCH_LENGTH; i++) { 408 pValueLength = ucnv_MBCSFromUChar32(myConverterData->myConverterArray[i], sourceChar, &pValue, useFallback); 409 if (pValueLength > 0) { 410 tmpState = (COMPOUND_TEXT_CONVERTERS)i; 411 if (currentState != tmpState) { 412 currentState = tmpState; 413 for (j = 0; escSeqCompoundText[currentState][j] != 0; j++) { 414 tmpTargetBuffer[tmpTargetBufferLength++] = escSeqCompoundText[currentState][j]; 415 } 416 } 417 for (n = (pValueLength - 1); n >= 0; n--) { 418 tmpTargetBuffer[tmpTargetBufferLength++] = (uint8_t)(pValue >> (n * 8)); 419 } 420 break; 421 } 422 } 423 } else if (tmpState == COMPOUND_TEXT_SINGLE_0) { 424 tmpTargetBuffer[tmpTargetBufferLength++] = (uint8_t)sourceChar; 425 } else { 426 pValueLength = ucnv_MBCSFromUChar32(myConverterData->myConverterArray[currentState], sourceChar, &pValue, useFallback); 427 if (pValueLength > 0) { 428 for (n = (pValueLength - 1); n >= 0; n--) { 429 tmpTargetBuffer[tmpTargetBufferLength++] = (uint8_t)(pValue >> (n * 8)); 430 } 431 } 432 } 433 434 for (i = 0; i < tmpTargetBufferLength; i++) { 435 if (target < targetLimit) { 436 *target++ = tmpTargetBuffer[i]; 437 } else { 438 *err = U_BUFFER_OVERFLOW_ERROR; 439 break; 440 } 441 } 442 443 if (*err == U_BUFFER_OVERFLOW_ERROR) { 444 for (; i < tmpTargetBufferLength; i++) { 445 args->converter->charErrorBuffer[args->converter->charErrorBufferLength++] = tmpTargetBuffer[i]; 446 } 447 } 448 } else { 449 *err = U_BUFFER_OVERFLOW_ERROR; 450 break; 451 } 452 } 453 454 /*save the state and return */ 455 myConverterData->state = currentState; 456 args->source = source; 457 args->target = (char*)target; 458 } 459 460 461 static void 462 UConverter_toUnicode_CompoundText_OFFSETS(UConverterToUnicodeArgs *args, 463 UErrorCode* err){ 464 const char *mySource = (char *) args->source; 465 UChar *myTarget = args->target; 466 const char *mySourceLimit = args->sourceLimit; 467 const char *tmpSourceLimit = mySourceLimit; 468 uint32_t mySourceChar = 0x0000; 469 COMPOUND_TEXT_CONVERTERS currentState, tmpState; 470 int32_t sourceOffset = 0; 471 UConverterDataCompoundText *myConverterData = (UConverterDataCompoundText *) args->converter->extraInfo; 472 UConverterSharedData* savedSharedData = NULL; 473 474 UConverterToUnicodeArgs subArgs; 475 int32_t minArgsSize; 476 477 /* set up the subconverter arguments */ 478 if(args->size<sizeof(UConverterToUnicodeArgs)) { 479 minArgsSize = args->size; 480 } else { 481 minArgsSize = (int32_t)sizeof(UConverterToUnicodeArgs); 482 } 483 484 uprv_memcpy(&subArgs, args, minArgsSize); 485 subArgs.size = (uint16_t)minArgsSize; 486 487 currentState = tmpState = myConverterData->state; 488 489 while(mySource < mySourceLimit){ 490 if(myTarget < args->targetLimit){ 491 if (args->converter->toULength > 0) { 492 mySourceChar = args->converter->toUBytes[0]; 493 } else { 494 mySourceChar = (uint8_t)*mySource; 495 } 496 497 if (mySourceChar == ESC_START) { 498 tmpState = findStateFromEscSeq(mySource, mySourceLimit, args->converter->toUBytes, args->converter->toULength, err); 499 500 if (*err == U_TRUNCATED_CHAR_FOUND) { 501 for (; mySource < mySourceLimit;) { 502 args->converter->toUBytes[args->converter->toULength++] = *mySource++; 503 } 504 *err = U_ZERO_ERROR; 505 break; 506 } else if (tmpState == INVALID) { 507 if (args->converter->toULength == 0) { 508 mySource++; /* skip over the 0x1b byte */ 509 } 510 *err = U_ILLEGAL_CHAR_FOUND; 511 break; 512 } 513 514 if (tmpState != currentState) { 515 currentState = tmpState; 516 } 517 518 sourceOffset = uprv_strlen((char*)escSeqCompoundText[currentState]) - args->converter->toULength; 519 520 mySource += sourceOffset; 521 522 args->converter->toULength = 0; 523 } 524 525 if (currentState == COMPOUND_TEXT_SINGLE_0) { 526 while (mySource < mySourceLimit) { 527 if (*mySource == ESC_START) { 528 break; 529 } 530 if (myTarget < args->targetLimit) { 531 *myTarget++ = 0x00ff&(*mySource++); 532 } else { 533 *err = U_BUFFER_OVERFLOW_ERROR; 534 break; 535 } 536 } 537 } else if (mySource < mySourceLimit){ 538 sourceOffset = findNextEsc(mySource, mySourceLimit); 539 540 tmpSourceLimit = mySource + sourceOffset; 541 542 subArgs.source = mySource; 543 subArgs.sourceLimit = tmpSourceLimit; 544 subArgs.target = myTarget; 545 savedSharedData = subArgs.converter->sharedData; 546 subArgs.converter->sharedData = myConverterData->myConverterArray[currentState]; 547 548 ucnv_MBCSToUnicodeWithOffsets(&subArgs, err); 549 550 subArgs.converter->sharedData = savedSharedData; 551 552 mySource = subArgs.source; 553 myTarget = subArgs.target; 554 555 if (U_FAILURE(*err)) { 556 if(*err == U_BUFFER_OVERFLOW_ERROR) { 557 if(subArgs.converter->UCharErrorBufferLength > 0) { 558 uprv_memcpy(args->converter->UCharErrorBuffer, subArgs.converter->UCharErrorBuffer, 559 subArgs.converter->UCharErrorBufferLength); 560 } 561 args->converter->UCharErrorBufferLength=subArgs.converter->UCharErrorBufferLength; 562 subArgs.converter->UCharErrorBufferLength = 0; 563 } 564 break; 565 } 566 } 567 } else { 568 *err = U_BUFFER_OVERFLOW_ERROR; 569 break; 570 } 571 } 572 myConverterData->state = currentState; 573 args->target = myTarget; 574 args->source = mySource; 575 } 576 577 static void 578 _CompoundText_GetUnicodeSet(const UConverter *cnv, 579 const USetAdder *sa, 580 UConverterUnicodeSet which, 581 UErrorCode *pErrorCode) { 582 UConverterDataCompoundText *myConverterData = (UConverterDataCompoundText *)cnv->extraInfo; 583 int32_t i; 584 585 for (i = 1; i < NUM_OF_CONVERTERS; i++) { 586 ucnv_MBCSGetUnicodeSetForUnicode(myConverterData->myConverterArray[i], sa, which, pErrorCode); 587 } 588 sa->add(sa->set, 0x0000); 589 sa->add(sa->set, 0x0009); 590 sa->add(sa->set, 0x000A); 591 sa->addRange(sa->set, 0x0020, 0x007F); 592 sa->addRange(sa->set, 0x00A0, 0x00FF); 593 } 594 595 static const UConverterImpl _CompoundTextImpl = { 596 597 UCNV_COMPOUND_TEXT, 598 599 NULL, 600 NULL, 601 602 _CompoundTextOpen, 603 _CompoundTextClose, 604 _CompoundTextReset, 605 606 UConverter_toUnicode_CompoundText_OFFSETS, 607 UConverter_toUnicode_CompoundText_OFFSETS, 608 UConverter_fromUnicode_CompoundText_OFFSETS, 609 UConverter_fromUnicode_CompoundText_OFFSETS, 610 NULL, 611 612 NULL, 613 _CompoundTextgetName, 614 NULL, 615 NULL, 616 _CompoundText_GetUnicodeSet 617 }; 618 static const UConverterStaticData _CompoundTextStaticData = { 619 sizeof(UConverterStaticData), 620 "COMPOUND_TEXT", 621 0, 622 UCNV_IBM, 623 UCNV_COMPOUND_TEXT, 624 1, 625 6, 626 { 0xef, 0, 0, 0 }, 627 1, 628 FALSE, 629 FALSE, 630 0, 631 0, 632 { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 } /* reserved */ 633 }; 634 const UConverterSharedData _CompoundTextData = 635 UCNV_IMMUTABLE_SHARED_DATA_INITIALIZER(&_CompoundTextStaticData, &_CompoundTextImpl); 636 637 #endif /* #if !UCONFIG_NO_LEGACY_CONVERSION */ 638
