1/* 2******************************************************************************* 3* 4* Copyright (C) 2003-2015, International Business Machines 5* Corporation and others. All Rights Reserved. 6* 7******************************************************************************* 8* file name: ucol_swp.cpp 9* encoding: US-ASCII 10* tab size: 8 (not used) 11* indentation:4 12* 13* created on: 2003sep10 14* created by: Markus W. Scherer 15* 16* Swap collation binaries. 17*/ 18 19#include "unicode/udata.h" /* UDataInfo */ 20#include "utrie.h" 21#include "utrie2.h" 22#include "udataswp.h" 23#include "cmemory.h" 24#include "ucol_data.h" 25#include "ucol_swp.h" 26 27/* swapping ----------------------------------------------------------------- */ 28 29/* 30 * This performs data swapping for a folded trie (see utrie.c for details). 31 */ 32 33U_CAPI int32_t U_EXPORT2 34utrie_swap(const UDataSwapper *ds, 35 const void *inData, int32_t length, void *outData, 36 UErrorCode *pErrorCode) { 37 const UTrieHeader *inTrie; 38 UTrieHeader trie; 39 int32_t size; 40 UBool dataIs32; 41 42 if(pErrorCode==NULL || U_FAILURE(*pErrorCode)) { 43 return 0; 44 } 45 if(ds==NULL || inData==NULL || (length>=0 && outData==NULL)) { 46 *pErrorCode=U_ILLEGAL_ARGUMENT_ERROR; 47 return 0; 48 } 49 50 /* setup and swapping */ 51 if(length>=0 && (uint32_t)length<sizeof(UTrieHeader)) { 52 *pErrorCode=U_INDEX_OUTOFBOUNDS_ERROR; 53 return 0; 54 } 55 56 inTrie=(const UTrieHeader *)inData; 57 trie.signature=ds->readUInt32(inTrie->signature); 58 trie.options=ds->readUInt32(inTrie->options); 59 trie.indexLength=udata_readInt32(ds, inTrie->indexLength); 60 trie.dataLength=udata_readInt32(ds, inTrie->dataLength); 61 62 if( trie.signature!=0x54726965 || 63 (trie.options&UTRIE_OPTIONS_SHIFT_MASK)!=UTRIE_SHIFT || 64 ((trie.options>>UTRIE_OPTIONS_INDEX_SHIFT)&UTRIE_OPTIONS_SHIFT_MASK)!=UTRIE_INDEX_SHIFT || 65 trie.indexLength<UTRIE_BMP_INDEX_LENGTH || 66 (trie.indexLength&(UTRIE_SURROGATE_BLOCK_COUNT-1))!=0 || 67 trie.dataLength<UTRIE_DATA_BLOCK_LENGTH || 68 (trie.dataLength&(UTRIE_DATA_GRANULARITY-1))!=0 || 69 ((trie.options&UTRIE_OPTIONS_LATIN1_IS_LINEAR)!=0 && trie.dataLength<(UTRIE_DATA_BLOCK_LENGTH+0x100)) 70 ) { 71 *pErrorCode=U_INVALID_FORMAT_ERROR; /* not a UTrie */ 72 return 0; 73 } 74 75 dataIs32=(UBool)((trie.options&UTRIE_OPTIONS_DATA_IS_32_BIT)!=0); 76 size=sizeof(UTrieHeader)+trie.indexLength*2+trie.dataLength*(dataIs32?4:2); 77 78 if(length>=0) { 79 UTrieHeader *outTrie; 80 81 if(length<size) { 82 *pErrorCode=U_INDEX_OUTOFBOUNDS_ERROR; 83 return 0; 84 } 85 86 outTrie=(UTrieHeader *)outData; 87 88 /* swap the header */ 89 ds->swapArray32(ds, inTrie, sizeof(UTrieHeader), outTrie, pErrorCode); 90 91 /* swap the index and the data */ 92 if(dataIs32) { 93 ds->swapArray16(ds, inTrie+1, trie.indexLength*2, outTrie+1, pErrorCode); 94 ds->swapArray32(ds, (const uint16_t *)(inTrie+1)+trie.indexLength, trie.dataLength*4, 95 (uint16_t *)(outTrie+1)+trie.indexLength, pErrorCode); 96 } else { 97 ds->swapArray16(ds, inTrie+1, (trie.indexLength+trie.dataLength)*2, outTrie+1, pErrorCode); 98 } 99 } 100 101 return size; 102} 103 104#if !UCONFIG_NO_COLLATION 105 106U_CAPI UBool U_EXPORT2 107ucol_looksLikeCollationBinary(const UDataSwapper *ds, 108 const void *inData, int32_t length) { 109 if(ds==NULL || inData==NULL || length<-1) { 110 return FALSE; 111 } 112 113 // First check for format version 4+ which has a standard data header. 114 UErrorCode errorCode=U_ZERO_ERROR; 115 (void)udata_swapDataHeader(ds, inData, -1, NULL, &errorCode); 116 if(U_SUCCESS(errorCode)) { 117 const UDataInfo &info=*(const UDataInfo *)((const char *)inData+4); 118 if(info.dataFormat[0]==0x55 && // dataFormat="UCol" 119 info.dataFormat[1]==0x43 && 120 info.dataFormat[2]==0x6f && 121 info.dataFormat[3]==0x6c) { 122 return TRUE; 123 } 124 } 125 126 // Else check for format version 3. 127 const UCATableHeader *inHeader=(const UCATableHeader *)inData; 128 129 /* 130 * The collation binary must contain at least the UCATableHeader, 131 * starting with its size field. 132 * sizeof(UCATableHeader)==42*4 in ICU 2.8 133 * check the length against the header size before reading the size field 134 */ 135 UCATableHeader header; 136 uprv_memset(&header, 0, sizeof(header)); 137 if(length<0) { 138 header.size=udata_readInt32(ds, inHeader->size); 139 } else if((length<(42*4) || length<(header.size=udata_readInt32(ds, inHeader->size)))) { 140 return FALSE; 141 } 142 143 header.magic=ds->readUInt32(inHeader->magic); 144 if(!( 145 header.magic==UCOL_HEADER_MAGIC && 146 inHeader->formatVersion[0]==3 /*&& 147 inHeader->formatVersion[1]>=0*/ 148 )) { 149 return FALSE; 150 } 151 152 if(inHeader->isBigEndian!=ds->inIsBigEndian || inHeader->charSetFamily!=ds->inCharset) { 153 return FALSE; 154 } 155 156 return TRUE; 157} 158 159namespace { 160 161/* swap a header-less collation formatVersion=3 binary, inside a resource bundle or ucadata.icu */ 162int32_t 163swapFormatVersion3(const UDataSwapper *ds, 164 const void *inData, int32_t length, void *outData, 165 UErrorCode *pErrorCode) { 166 const uint8_t *inBytes; 167 uint8_t *outBytes; 168 169 const UCATableHeader *inHeader; 170 UCATableHeader *outHeader; 171 UCATableHeader header; 172 173 uint32_t count; 174 175 /* argument checking in case we were not called from ucol_swap() */ 176 if(U_FAILURE(*pErrorCode)) { 177 return 0; 178 } 179 if(ds==NULL || inData==NULL || length<-1 || (length>0 && outData==NULL)) { 180 *pErrorCode=U_ILLEGAL_ARGUMENT_ERROR; 181 return 0; 182 } 183 184 inBytes=(const uint8_t *)inData; 185 outBytes=(uint8_t *)outData; 186 187 inHeader=(const UCATableHeader *)inData; 188 outHeader=(UCATableHeader *)outData; 189 190 /* 191 * The collation binary must contain at least the UCATableHeader, 192 * starting with its size field. 193 * sizeof(UCATableHeader)==42*4 in ICU 2.8 194 * check the length against the header size before reading the size field 195 */ 196 uprv_memset(&header, 0, sizeof(header)); 197 if(length<0) { 198 header.size=udata_readInt32(ds, inHeader->size); 199 } else if((length<(42*4) || length<(header.size=udata_readInt32(ds, inHeader->size)))) { 200 udata_printError(ds, "ucol_swap(formatVersion=3): too few bytes (%d after header) for collation data\n", 201 length); 202 *pErrorCode=U_INDEX_OUTOFBOUNDS_ERROR; 203 return 0; 204 } 205 206 header.magic=ds->readUInt32(inHeader->magic); 207 if(!( 208 header.magic==UCOL_HEADER_MAGIC && 209 inHeader->formatVersion[0]==3 /*&& 210 inHeader->formatVersion[1]>=0*/ 211 )) { 212 udata_printError(ds, "ucol_swap(formatVersion=3): magic 0x%08x or format version %02x.%02x is not a collation binary\n", 213 header.magic, 214 inHeader->formatVersion[0], inHeader->formatVersion[1]); 215 *pErrorCode=U_UNSUPPORTED_ERROR; 216 return 0; 217 } 218 219 if(inHeader->isBigEndian!=ds->inIsBigEndian || inHeader->charSetFamily!=ds->inCharset) { 220 udata_printError(ds, "ucol_swap(formatVersion=3): endianness %d or charset %d does not match the swapper\n", 221 inHeader->isBigEndian, inHeader->charSetFamily); 222 *pErrorCode=U_INVALID_FORMAT_ERROR; 223 return 0; 224 } 225 226 if(length>=0) { 227 /* copy everything, takes care of data that needs no swapping */ 228 if(inBytes!=outBytes) { 229 uprv_memcpy(outBytes, inBytes, header.size); 230 } 231 232 /* swap the necessary pieces in the order of their occurrence in the data */ 233 234 /* read more of the UCATableHeader (the size field was read above) */ 235 header.options= ds->readUInt32(inHeader->options); 236 header.UCAConsts= ds->readUInt32(inHeader->UCAConsts); 237 header.contractionUCACombos= ds->readUInt32(inHeader->contractionUCACombos); 238 header.mappingPosition= ds->readUInt32(inHeader->mappingPosition); 239 header.expansion= ds->readUInt32(inHeader->expansion); 240 header.contractionIndex= ds->readUInt32(inHeader->contractionIndex); 241 header.contractionCEs= ds->readUInt32(inHeader->contractionCEs); 242 header.contractionSize= ds->readUInt32(inHeader->contractionSize); 243 header.endExpansionCE= ds->readUInt32(inHeader->endExpansionCE); 244 header.expansionCESize= ds->readUInt32(inHeader->expansionCESize); 245 header.endExpansionCECount= udata_readInt32(ds, inHeader->endExpansionCECount); 246 header.contractionUCACombosSize=udata_readInt32(ds, inHeader->contractionUCACombosSize); 247 header.scriptToLeadByte= ds->readUInt32(inHeader->scriptToLeadByte); 248 header.leadByteToScript= ds->readUInt32(inHeader->leadByteToScript); 249 250 /* swap the 32-bit integers in the header */ 251 ds->swapArray32(ds, inHeader, (int32_t)((const char *)&inHeader->jamoSpecial-(const char *)inHeader), 252 outHeader, pErrorCode); 253 ds->swapArray32(ds, &(inHeader->scriptToLeadByte), sizeof(header.scriptToLeadByte) + sizeof(header.leadByteToScript), 254 &(outHeader->scriptToLeadByte), pErrorCode); 255 /* set the output platform properties */ 256 outHeader->isBigEndian=ds->outIsBigEndian; 257 outHeader->charSetFamily=ds->outCharset; 258 259 /* swap the options */ 260 if(header.options!=0) { 261 ds->swapArray32(ds, inBytes+header.options, header.expansion-header.options, 262 outBytes+header.options, pErrorCode); 263 } 264 265 /* swap the expansions */ 266 if(header.mappingPosition!=0 && header.expansion!=0) { 267 if(header.contractionIndex!=0) { 268 /* expansions bounded by contractions */ 269 count=header.contractionIndex-header.expansion; 270 } else { 271 /* no contractions: expansions bounded by the main trie */ 272 count=header.mappingPosition-header.expansion; 273 } 274 ds->swapArray32(ds, inBytes+header.expansion, (int32_t)count, 275 outBytes+header.expansion, pErrorCode); 276 } 277 278 /* swap the contractions */ 279 if(header.contractionSize!=0) { 280 /* contractionIndex: UChar[] */ 281 ds->swapArray16(ds, inBytes+header.contractionIndex, header.contractionSize*2, 282 outBytes+header.contractionIndex, pErrorCode); 283 284 /* contractionCEs: CEs[] */ 285 ds->swapArray32(ds, inBytes+header.contractionCEs, header.contractionSize*4, 286 outBytes+header.contractionCEs, pErrorCode); 287 } 288 289 /* swap the main trie */ 290 if(header.mappingPosition!=0) { 291 count=header.endExpansionCE-header.mappingPosition; 292 utrie_swap(ds, inBytes+header.mappingPosition, (int32_t)count, 293 outBytes+header.mappingPosition, pErrorCode); 294 } 295 296 /* swap the max expansion table */ 297 if(header.endExpansionCECount!=0) { 298 ds->swapArray32(ds, inBytes+header.endExpansionCE, header.endExpansionCECount*4, 299 outBytes+header.endExpansionCE, pErrorCode); 300 } 301 302 /* expansionCESize, unsafeCP, contrEndCP: uint8_t[], no need to swap */ 303 304 /* swap UCA constants */ 305 if(header.UCAConsts!=0) { 306 /* 307 * if UCAConsts!=0 then contractionUCACombos because we are swapping 308 * the UCA data file, and we know that the UCA contains contractions 309 */ 310 ds->swapArray32(ds, inBytes+header.UCAConsts, header.contractionUCACombos-header.UCAConsts, 311 outBytes+header.UCAConsts, pErrorCode); 312 } 313 314 /* swap UCA contractions */ 315 if(header.contractionUCACombosSize!=0) { 316 count=header.contractionUCACombosSize*inHeader->contractionUCACombosWidth*U_SIZEOF_UCHAR; 317 ds->swapArray16(ds, inBytes+header.contractionUCACombos, (int32_t)count, 318 outBytes+header.contractionUCACombos, pErrorCode); 319 } 320 321 /* swap the script to lead bytes */ 322 if(header.scriptToLeadByte!=0) { 323 int indexCount = ds->readUInt16(*((uint16_t*)(inBytes+header.scriptToLeadByte))); // each entry = 2 * uint16 324 int dataCount = ds->readUInt16(*((uint16_t*)(inBytes+header.scriptToLeadByte + 2))); // each entry = uint16 325 ds->swapArray16(ds, inBytes+header.scriptToLeadByte, 326 4 + (4 * indexCount) + (2 * dataCount), 327 outBytes+header.scriptToLeadByte, pErrorCode); 328 } 329 330 /* swap the lead byte to scripts */ 331 if(header.leadByteToScript!=0) { 332 int indexCount = ds->readUInt16(*((uint16_t*)(inBytes+header.leadByteToScript))); // each entry = uint16 333 int dataCount = ds->readUInt16(*((uint16_t*)(inBytes+header.leadByteToScript + 2))); // each entry = uint16 334 ds->swapArray16(ds, inBytes+header.leadByteToScript, 335 4 + (2 * indexCount) + (2 * dataCount), 336 outBytes+header.leadByteToScript, pErrorCode); 337 } 338 } 339 340 return header.size; 341} 342 343// swap formatVersion 4 or 5 ----------------------------------------------- *** 344 345// The following are copied from CollationDataReader, trading an awkward copy of constants 346// for an awkward relocation of the i18n collationdatareader.h file into the common library. 347// Keep them in sync! 348 349enum { 350 IX_INDEXES_LENGTH, // 0 351 IX_OPTIONS, 352 IX_RESERVED2, 353 IX_RESERVED3, 354 355 IX_JAMO_CE32S_START, // 4 356 IX_REORDER_CODES_OFFSET, 357 IX_REORDER_TABLE_OFFSET, 358 IX_TRIE_OFFSET, 359 360 IX_RESERVED8_OFFSET, // 8 361 IX_CES_OFFSET, 362 IX_RESERVED10_OFFSET, 363 IX_CE32S_OFFSET, 364 365 IX_ROOT_ELEMENTS_OFFSET, // 12 366 IX_CONTEXTS_OFFSET, 367 IX_UNSAFE_BWD_OFFSET, 368 IX_FAST_LATIN_TABLE_OFFSET, 369 370 IX_SCRIPTS_OFFSET, // 16 371 IX_COMPRESSIBLE_BYTES_OFFSET, 372 IX_RESERVED18_OFFSET, 373 IX_TOTAL_SIZE 374}; 375 376int32_t 377swapFormatVersion4(const UDataSwapper *ds, 378 const void *inData, int32_t length, void *outData, 379 UErrorCode &errorCode) { 380 if(U_FAILURE(errorCode)) { return 0; } 381 382 const uint8_t *inBytes=(const uint8_t *)inData; 383 uint8_t *outBytes=(uint8_t *)outData; 384 385 const int32_t *inIndexes=(const int32_t *)inBytes; 386 int32_t indexes[IX_TOTAL_SIZE+1]; 387 388 // Need at least IX_INDEXES_LENGTH and IX_OPTIONS. 389 if(0<=length && length<8) { 390 udata_printError(ds, "ucol_swap(formatVersion=4): too few bytes " 391 "(%d after header) for collation data\n", 392 length); 393 errorCode=U_INDEX_OUTOFBOUNDS_ERROR; 394 return 0; 395 } 396 397 int32_t indexesLength=indexes[0]=udata_readInt32(ds, inIndexes[0]); 398 if(0<=length && length<(indexesLength*4)) { 399 udata_printError(ds, "ucol_swap(formatVersion=4): too few bytes " 400 "(%d after header) for collation data\n", 401 length); 402 errorCode=U_INDEX_OUTOFBOUNDS_ERROR; 403 return 0; 404 } 405 406 for(int32_t i=1; i<=IX_TOTAL_SIZE && i<indexesLength; ++i) { 407 indexes[i]=udata_readInt32(ds, inIndexes[i]); 408 } 409 for(int32_t i=indexesLength; i<=IX_TOTAL_SIZE; ++i) { 410 indexes[i]=-1; 411 } 412 inIndexes=NULL; // Make sure we do not accidentally use these instead of indexes[]. 413 414 // Get the total length of the data. 415 int32_t size; 416 if(indexesLength>IX_TOTAL_SIZE) { 417 size=indexes[IX_TOTAL_SIZE]; 418 } else if(indexesLength>IX_REORDER_CODES_OFFSET) { 419 size=indexes[indexesLength-1]; 420 } else { 421 size=indexesLength*4; 422 } 423 if(length<0) { return size; } 424 425 if(length<size) { 426 udata_printError(ds, "ucol_swap(formatVersion=4): too few bytes " 427 "(%d after header) for collation data\n", 428 length); 429 errorCode=U_INDEX_OUTOFBOUNDS_ERROR; 430 return 0; 431 } 432 433 // Copy the data for inaccessible bytes and arrays of bytes. 434 if(inBytes!=outBytes) { 435 uprv_memcpy(outBytes, inBytes, size); 436 } 437 438 // Swap the int32_t indexes[]. 439 ds->swapArray32(ds, inBytes, indexesLength * 4, outBytes, &errorCode); 440 441 // The following is a modified version of CollationDataReader::read(). 442 // Here we use indexes[] not inIndexes[] because 443 // the inIndexes[] may not be in this machine's endianness. 444 int32_t index; // one of the indexes[] slots 445 int32_t offset; // byte offset for the index part 446 // int32_t length; // number of bytes in the index part 447 448 index = IX_REORDER_CODES_OFFSET; 449 offset = indexes[index]; 450 length = indexes[index + 1] - offset; 451 if(length > 0) { 452 ds->swapArray32(ds, inBytes + offset, length, outBytes + offset, &errorCode); 453 } 454 455 // Skip the IX_REORDER_TABLE_OFFSET byte array. 456 457 index = IX_TRIE_OFFSET; 458 offset = indexes[index]; 459 length = indexes[index + 1] - offset; 460 if(length > 0) { 461 utrie2_swap(ds, inBytes + offset, length, outBytes + offset, &errorCode); 462 } 463 464 index = IX_RESERVED8_OFFSET; 465 offset = indexes[index]; 466 length = indexes[index + 1] - offset; 467 if(length > 0) { 468 udata_printError(ds, "ucol_swap(formatVersion=4): unknown data at IX_RESERVED8_OFFSET\n", length); 469 errorCode = U_UNSUPPORTED_ERROR; 470 return 0; 471 } 472 473 index = IX_CES_OFFSET; 474 offset = indexes[index]; 475 length = indexes[index + 1] - offset; 476 if(length > 0) { 477 ds->swapArray64(ds, inBytes + offset, length, outBytes + offset, &errorCode); 478 } 479 480 index = IX_RESERVED10_OFFSET; 481 offset = indexes[index]; 482 length = indexes[index + 1] - offset; 483 if(length > 0) { 484 udata_printError(ds, "ucol_swap(formatVersion=4): unknown data at IX_RESERVED10_OFFSET\n", length); 485 errorCode = U_UNSUPPORTED_ERROR; 486 return 0; 487 } 488 489 index = IX_CE32S_OFFSET; 490 offset = indexes[index]; 491 length = indexes[index + 1] - offset; 492 if(length > 0) { 493 ds->swapArray32(ds, inBytes + offset, length, outBytes + offset, &errorCode); 494 } 495 496 index = IX_ROOT_ELEMENTS_OFFSET; 497 offset = indexes[index]; 498 length = indexes[index + 1] - offset; 499 if(length > 0) { 500 ds->swapArray32(ds, inBytes + offset, length, outBytes + offset, &errorCode); 501 } 502 503 index = IX_CONTEXTS_OFFSET; 504 offset = indexes[index]; 505 length = indexes[index + 1] - offset; 506 if(length > 0) { 507 ds->swapArray16(ds, inBytes + offset, length, outBytes + offset, &errorCode); 508 } 509 510 index = IX_UNSAFE_BWD_OFFSET; 511 offset = indexes[index]; 512 length = indexes[index + 1] - offset; 513 if(length > 0) { 514 ds->swapArray16(ds, inBytes + offset, length, outBytes + offset, &errorCode); 515 } 516 517 index = IX_FAST_LATIN_TABLE_OFFSET; 518 offset = indexes[index]; 519 length = indexes[index + 1] - offset; 520 if(length > 0) { 521 ds->swapArray16(ds, inBytes + offset, length, outBytes + offset, &errorCode); 522 } 523 524 index = IX_SCRIPTS_OFFSET; 525 offset = indexes[index]; 526 length = indexes[index + 1] - offset; 527 if(length > 0) { 528 ds->swapArray16(ds, inBytes + offset, length, outBytes + offset, &errorCode); 529 } 530 531 // Skip the IX_COMPRESSIBLE_BYTES_OFFSET byte array. 532 533 index = IX_RESERVED18_OFFSET; 534 offset = indexes[index]; 535 length = indexes[index + 1] - offset; 536 if(length > 0) { 537 udata_printError(ds, "ucol_swap(formatVersion=4): unknown data at IX_RESERVED18_OFFSET\n", length); 538 errorCode = U_UNSUPPORTED_ERROR; 539 return 0; 540 } 541 542 return size; 543} 544 545} // namespace 546 547/* swap ICU collation data like ucadata.icu */ 548U_CAPI int32_t U_EXPORT2 549ucol_swap(const UDataSwapper *ds, 550 const void *inData, int32_t length, void *outData, 551 UErrorCode *pErrorCode) { 552 if(U_FAILURE(*pErrorCode)) { return 0; } 553 554 /* udata_swapDataHeader checks the arguments */ 555 int32_t headerSize=udata_swapDataHeader(ds, inData, length, outData, pErrorCode); 556 if(U_FAILURE(*pErrorCode)) { 557 // Try to swap the old format version which did not have a standard data header. 558 *pErrorCode=U_ZERO_ERROR; 559 return swapFormatVersion3(ds, inData, length, outData, pErrorCode); 560 } 561 562 /* check data format and format version */ 563 const UDataInfo &info=*(const UDataInfo *)((const char *)inData+4); 564 if(!( 565 info.dataFormat[0]==0x55 && // dataFormat="UCol" 566 info.dataFormat[1]==0x43 && 567 info.dataFormat[2]==0x6f && 568 info.dataFormat[3]==0x6c && 569 (3<=info.formatVersion[0] && info.formatVersion[0]<=5) 570 )) { 571 udata_printError(ds, "ucol_swap(): data format %02x.%02x.%02x.%02x " 572 "(format version %02x.%02x) is not recognized as collation data\n", 573 info.dataFormat[0], info.dataFormat[1], 574 info.dataFormat[2], info.dataFormat[3], 575 info.formatVersion[0], info.formatVersion[1]); 576 *pErrorCode=U_UNSUPPORTED_ERROR; 577 return 0; 578 } 579 580 inData=(const char *)inData+headerSize; 581 if(length>=0) { length-=headerSize; } 582 outData=(char *)outData+headerSize; 583 int32_t collationSize; 584 if(info.formatVersion[0]>=4) { 585 collationSize=swapFormatVersion4(ds, inData, length, outData, *pErrorCode); 586 } else { 587 collationSize=swapFormatVersion3(ds, inData, length, outData, pErrorCode); 588 } 589 if(U_SUCCESS(*pErrorCode)) { 590 return headerSize+collationSize; 591 } else { 592 return 0; 593 } 594} 595 596/* swap inverse UCA collation data (invuca.icu) */ 597U_CAPI int32_t U_EXPORT2 598ucol_swapInverseUCA(const UDataSwapper *ds, 599 const void *inData, int32_t length, void *outData, 600 UErrorCode *pErrorCode) { 601 const UDataInfo *pInfo; 602 int32_t headerSize; 603 604 const uint8_t *inBytes; 605 uint8_t *outBytes; 606 607 const InverseUCATableHeader *inHeader; 608 InverseUCATableHeader *outHeader; 609 InverseUCATableHeader header={ 0,0,0,0,0,{0,0,0,0},{0,0,0,0,0,0,0,0} }; 610 611 /* udata_swapDataHeader checks the arguments */ 612 headerSize=udata_swapDataHeader(ds, inData, length, outData, pErrorCode); 613 if(pErrorCode==NULL || U_FAILURE(*pErrorCode)) { 614 return 0; 615 } 616 617 /* check data format and format version */ 618 pInfo=(const UDataInfo *)((const char *)inData+4); 619 if(!( 620 pInfo->dataFormat[0]==0x49 && /* dataFormat="InvC" */ 621 pInfo->dataFormat[1]==0x6e && 622 pInfo->dataFormat[2]==0x76 && 623 pInfo->dataFormat[3]==0x43 && 624 pInfo->formatVersion[0]==2 && 625 pInfo->formatVersion[1]>=1 626 )) { 627 udata_printError(ds, "ucol_swapInverseUCA(): data format %02x.%02x.%02x.%02x (format version %02x.%02x) is not an inverse UCA collation file\n", 628 pInfo->dataFormat[0], pInfo->dataFormat[1], 629 pInfo->dataFormat[2], pInfo->dataFormat[3], 630 pInfo->formatVersion[0], pInfo->formatVersion[1]); 631 *pErrorCode=U_UNSUPPORTED_ERROR; 632 return 0; 633 } 634 635 inBytes=(const uint8_t *)inData+headerSize; 636 outBytes=(uint8_t *)outData+headerSize; 637 638 inHeader=(const InverseUCATableHeader *)inBytes; 639 outHeader=(InverseUCATableHeader *)outBytes; 640 641 /* 642 * The inverse UCA collation binary must contain at least the InverseUCATableHeader, 643 * starting with its size field. 644 * sizeof(UCATableHeader)==8*4 in ICU 2.8 645 * check the length against the header size before reading the size field 646 */ 647 if(length<0) { 648 header.byteSize=udata_readInt32(ds, inHeader->byteSize); 649 } else if( 650 ((length-headerSize)<(8*4) || 651 (uint32_t)(length-headerSize)<(header.byteSize=udata_readInt32(ds, inHeader->byteSize))) 652 ) { 653 udata_printError(ds, "ucol_swapInverseUCA(): too few bytes (%d after header) for inverse UCA collation data\n", 654 length); 655 *pErrorCode=U_INDEX_OUTOFBOUNDS_ERROR; 656 return 0; 657 } 658 659 if(length>=0) { 660 /* copy everything, takes care of data that needs no swapping */ 661 if(inBytes!=outBytes) { 662 uprv_memcpy(outBytes, inBytes, header.byteSize); 663 } 664 665 /* swap the necessary pieces in the order of their occurrence in the data */ 666 667 /* read more of the InverseUCATableHeader (the byteSize field was read above) */ 668 header.tableSize= ds->readUInt32(inHeader->tableSize); 669 header.contsSize= ds->readUInt32(inHeader->contsSize); 670 header.table= ds->readUInt32(inHeader->table); 671 header.conts= ds->readUInt32(inHeader->conts); 672 673 /* swap the 32-bit integers in the header */ 674 ds->swapArray32(ds, inHeader, 5*4, outHeader, pErrorCode); 675 676 /* swap the inverse table; tableSize counts uint32_t[3] rows */ 677 ds->swapArray32(ds, inBytes+header.table, header.tableSize*3*4, 678 outBytes+header.table, pErrorCode); 679 680 /* swap the continuation table; contsSize counts UChars */ 681 ds->swapArray16(ds, inBytes+header.conts, header.contsSize*U_SIZEOF_UCHAR, 682 outBytes+header.conts, pErrorCode); 683 } 684 685 return headerSize+header.byteSize; 686} 687 688#endif /* #if !UCONFIG_NO_COLLATION */ 689