| /* |
| ******************************************************************************* |
| * Copyright (C) 1996-2001, International Business Machines |
| * Corporation and others. All Rights Reserved. |
| ******************************************************************************* |
| * file name: ucol.cpp |
| * encoding: US-ASCII |
| * tab size: 8 (not used) |
| * indentation:4 |
| * |
| * Modification history |
| * Date Name Comments |
| * 1996-1999 various members of ICU team maintained C API for collation framework |
| * 02/16/2001 synwee Added internal method getPrevSpecialCE |
| * 03/01/2001 synwee Added maxexpansion functionality. |
| * 03/16/2001 weiv Collation framework is rewritten in C and made UCA compliant |
| */ |
| |
| #include "ucol_bld.h" |
| #include "ucol_imp.h" |
| #include "ucol_tok.h" |
| #include "ucol_elm.h" |
| #include "bocsu.h" |
| |
| #include "unormimp.h" |
| #include "cstring.h" |
| #include "umutex.h" |
| #include "uhash.h" |
| #include "ucln_in.h" |
| |
| #include "unicode/uloc.h" |
| #include "unicode/coll.h" |
| #include "unicode/tblcoll.h" |
| #include "unicode/coleitr.h" |
| #include "unicode/unorm.h" |
| #include "unicode/udata.h" |
| #include "unicode/uchar.h" |
| |
| #ifdef UCOL_DEBUG |
| #include <stdio.h> |
| #endif |
| |
| U_NAMESPACE_USE |
| |
| /* added by synwee for trie manipulation*/ |
| #define STAGE_1_SHIFT_ 10 |
| #define STAGE_2_SHIFT_ 4 |
| #define STAGE_2_MASK_AFTER_SHIFT_ 0x3F |
| #define STAGE_3_MASK_ 0xF |
| #define LAST_BYTE_MASK_ 0xFF |
| #define SECOND_LAST_BYTE_SHIFT_ 8 |
| |
| #define ZERO_CC_LIMIT_ 0xC0 |
| |
| static UCollator* UCA = NULL; |
| static UDataMemory* UCA_DATA_MEM = NULL; |
| |
| |
| U_CDECL_BEGIN |
| static UBool U_CALLCONV |
| isAcceptableUCA(void * /*context*/, |
| const char * /*type*/, const char * /*name*/, |
| const UDataInfo *pInfo){ |
| /* context, type & name are intentionally not used */ |
| if( pInfo->size>=20 && |
| pInfo->isBigEndian==U_IS_BIG_ENDIAN && |
| pInfo->charsetFamily==U_CHARSET_FAMILY && |
| pInfo->dataFormat[0]==ucaDataInfo.dataFormat[0] && /* dataFormat="UCol" */ |
| pInfo->dataFormat[1]==ucaDataInfo.dataFormat[1] && |
| pInfo->dataFormat[2]==ucaDataInfo.dataFormat[2] && |
| pInfo->dataFormat[3]==ucaDataInfo.dataFormat[3] && |
| pInfo->formatVersion[0]==ucaDataInfo.formatVersion[0] && |
| pInfo->formatVersion[1]==ucaDataInfo.formatVersion[1] && |
| pInfo->formatVersion[2]==ucaDataInfo.formatVersion[2] && |
| pInfo->formatVersion[3]==ucaDataInfo.formatVersion[3] && |
| pInfo->dataVersion[0]==ucaDataInfo.dataVersion[0] && |
| pInfo->dataVersion[1]==ucaDataInfo.dataVersion[1] && |
| pInfo->dataVersion[2]==ucaDataInfo.dataVersion[2] && |
| pInfo->dataVersion[3]==ucaDataInfo.dataVersion[3]) { |
| return TRUE; |
| } else { |
| return FALSE; |
| } |
| } |
| U_CDECL_END |
| |
| /* added for Han implicit CE */ |
| static const uint32_t IMPLICIT_HAN_START_ = 0x3400; |
| static const uint32_t IMPLICIT_HAN_LIMIT_ = 0xA000; |
| static const uint32_t IMPLICIT_SUPPLEMENTARY_COUNT_ = 0x100000; |
| static const uint32_t IMPLICIT_BYTES_TO_AVOID_ = 3; |
| static const uint32_t IMPLICIT_OTHER_COUNT_ = 256 - IMPLICIT_BYTES_TO_AVOID_; |
| static const uint32_t IMPLICIT_LAST_COUNT_ = IMPLICIT_OTHER_COUNT_ / 2; |
| static const uint32_t IMPLICIT_LAST_COUNT2_ = |
| (IMPLICIT_SUPPLEMENTARY_COUNT_ - 1) / |
| (IMPLICIT_OTHER_COUNT_ * IMPLICIT_OTHER_COUNT_) + 1; |
| static const uint32_t IMPLICIT_HAN_SHIFT_ = IMPLICIT_LAST_COUNT_ * |
| IMPLICIT_OTHER_COUNT_ - IMPLICIT_HAN_START_; |
| static const uint32_t IMPLICIT_BOUNDARY_ = 2 * IMPLICIT_OTHER_COUNT_ * |
| IMPLICIT_LAST_COUNT_ + IMPLICIT_HAN_START_; |
| static const uint32_t IMPLICIT_LAST2_MULTIPLIER_ = IMPLICIT_OTHER_COUNT_ / |
| IMPLICIT_LAST_COUNT2_; |
| |
| static |
| inline void IInit_collIterate(const UCollator *collator, const UChar *sourceString, |
| int32_t sourceLen, collIterate *s) { |
| (s)->string = (s)->pos = (UChar *)(sourceString); |
| (s)->origFlags = 0; |
| (s)->flags = 0; |
| if (sourceLen >= 0) { |
| s->flags |= UCOL_ITER_HASLEN; |
| (s)->endp = (UChar *)sourceString+sourceLen; |
| } |
| else { |
| /* change to enable easier checking for end of string for fcdpositon */ |
| (s)->endp = NULL; |
| } |
| (s)->CEpos = (s)->toReturn = (s)->CEs; |
| (s)->writableBuffer = (s)->stackWritableBuffer; |
| (s)->writableBufSize = UCOL_WRITABLE_BUFFER_SIZE; |
| (s)->coll = (collator); |
| (s)->fcdPosition = 0; |
| if(collator->normalizationMode == UCOL_ON) { |
| (s)->flags |= UCOL_ITER_NORM; |
| } |
| if(collator->hiraganaQ == UCOL_ON) { |
| (s)->flags |= UCOL_HIRAGANA_Q; |
| } |
| } |
| |
| U_CAPI void U_EXPORT2 |
| init_collIterate(const UCollator *collator, const UChar *sourceString, |
| int32_t sourceLen, collIterate *s){ |
| /* Out-of-line version for use from other files. */ |
| IInit_collIterate(collator, sourceString, sourceLen, s); |
| } |
| |
| /** |
| * Backup the state of the collIterate struct data |
| * @param data collIterate to backup |
| * @param backup storage |
| */ |
| static |
| inline void backupState(const collIterate *data, collIterateState *backup) |
| { |
| backup->fcdPosition = data->fcdPosition; |
| backup->flags = data->flags; |
| backup->origFlags = data->origFlags; |
| backup->pos = data->pos; |
| backup->bufferaddress = data->writableBuffer; |
| backup->buffersize = data->writableBufSize; |
| } |
| |
| /** |
| * Loads the state into the collIterate struct data |
| * @param data collIterate to backup |
| * @param backup storage |
| * @param forwards boolean to indicate if forwards iteration is used, |
| * false indicates backwards iteration |
| */ |
| static |
| inline void loadState(collIterate *data, const collIterateState *backup, |
| UBool forwards) |
| { |
| data->flags = backup->flags; |
| data->origFlags = backup->origFlags; |
| data->pos = backup->pos; |
| if ((data->flags & UCOL_ITER_INNORMBUF) && |
| data->writableBuffer != backup->bufferaddress) { |
| /* |
| this is when a new buffer has been reallocated and we'll have to |
| calculate the new position. |
| note the new buffer has to contain the contents of the old buffer. |
| */ |
| if (forwards) { |
| data->pos = data->writableBuffer + |
| (data->pos - backup->bufferaddress); |
| } |
| else { |
| /* backwards direction */ |
| uint32_t temp = backup->buffersize - |
| (data->pos - backup->bufferaddress); |
| data->pos = data->writableBuffer + (data->writableBufSize - temp); |
| } |
| } |
| if ((data->flags & UCOL_ITER_INNORMBUF) == 0) { |
| /* |
| this is alittle tricky. |
| if we are initially not in the normalization buffer, even if we |
| normalize in the later stage, the data in the buffer will be |
| ignored, since we skip back up to the data string. |
| however if we are already in the normalization buffer, any |
| further normalization will pull data into the normalization |
| buffer and modify the fcdPosition. |
| since we are keeping the data in the buffer for use, the |
| fcdPosition can not be reverted back. |
| arrgghh.... |
| */ |
| data->fcdPosition = backup->fcdPosition; |
| } |
| } |
| |
| |
| /* |
| * collIter_eos() |
| * Checks for a collIterate being positioned at the end of |
| * its source string. |
| * |
| */ |
| static |
| inline UBool collIter_eos(collIterate *s) { |
| if ((s->flags & UCOL_ITER_HASLEN) == 0 && *s->pos != 0) { |
| // Null terminated string, but not at null, so not at end. |
| // Whether in main or normalization buffer doesn't matter. |
| return FALSE; |
| } |
| |
| // String with length. Can't be in normalization buffer, which is always |
| // null termintated. |
| if (s->flags & UCOL_ITER_HASLEN) { |
| return (s->pos == s->endp); |
| } |
| |
| // We are at a null termination, could be either normalization buffer or main string. |
| if ((s->flags & UCOL_ITER_INNORMBUF) == 0) { |
| // At null at end of main string. |
| return TRUE; |
| } |
| |
| // At null at end of normalization buffer. Need to check whether there there are |
| // any characters left in the main buffer. |
| |
| if ((s->origFlags & UCOL_ITER_HASLEN) == 0) { |
| // Null terminated main string. fcdPosition is the 'return' position into main buf. |
| return (*s->fcdPosition == 0); |
| } |
| else { |
| // Main string with an end pointer. |
| return s->fcdPosition == s->endp; |
| } |
| } |
| |
| |
| /** |
| * Checks and free writable buffer if it is not the original stack buffer |
| * in collIterate. This function does not reassign the writable buffer. |
| * @param data collIterate struct to determine and free the writable buffer |
| */ |
| static |
| inline void freeHeapWritableBuffer(collIterate *data) |
| { |
| if (data->writableBuffer != data->stackWritableBuffer) { |
| uprv_free(data->writableBuffer); |
| } |
| } |
| |
| |
| |
| |
| /****************************************************************************/ |
| /* Following are the open/close functions */ |
| /* */ |
| /****************************************************************************/ |
| U_CAPI UCollator* U_EXPORT2 |
| ucol_open( const char *loc, |
| UErrorCode *status) |
| { |
| |
| ucol_initUCA(status); |
| |
| /* New version */ |
| if(U_FAILURE(*status)) return 0; |
| |
| UCollator *result = NULL; |
| UResourceBundle *b = ures_open(NULL, loc, status); |
| /* first take on tailoring version: */ |
| /* get CollationElements -> Version */ |
| UResourceBundle *binary = ures_getByKey(b, "%%CollationNew", NULL, status); |
| |
| if(*status == U_MISSING_RESOURCE_ERROR) { /* if we don't find tailoring, we'll fallback to UCA */ |
| *status = U_USING_DEFAULT_ERROR; |
| result = ucol_initCollator(UCA->image, result, status); |
| /*result = UCA;*/ |
| result->hasRealData = FALSE; |
| } else if(U_SUCCESS(*status)) { /* otherwise, we'll pick a collation data that exists */ |
| int32_t len = 0; |
| const uint8_t *inData = ures_getBinary(binary, &len, status); |
| if(U_FAILURE(*status)){ |
| goto clean; |
| } |
| if((uint32_t)len > (paddedsize(sizeof(UCATableHeader)) + paddedsize(sizeof(UColOptionSet)))) { |
| result = ucol_initCollator((const UCATableHeader *)inData, result, status); |
| if(U_FAILURE(*status)){ |
| goto clean; |
| } |
| result->hasRealData = TRUE; |
| } else { |
| result = ucol_initCollator(UCA->image, result, status); |
| ucol_setOptionsFromHeader(result, (UColOptionSet *)(inData+((const UCATableHeader *)inData)->options), status); |
| if(U_FAILURE(*status)){ |
| goto clean; |
| } |
| result->hasRealData = FALSE; |
| } |
| } else { /* There is another error, and we're just gonna clean up */ |
| clean: |
| ures_close(b); |
| ures_close(binary); |
| return NULL; |
| } |
| |
| result->rb = b; |
| ures_close(binary); |
| |
| return result; |
| } |
| |
| U_CAPI UCollator * U_EXPORT2 |
| ucol_openVersion(const char *loc, |
| UVersionInfo version, |
| UErrorCode *status) { |
| UCollator *collator; |
| UVersionInfo info; |
| |
| collator=ucol_open(loc, status); |
| if(U_SUCCESS(*status)) { |
| ucol_getVersion(collator, info); |
| if(0!=uprv_memcmp(version, info, sizeof(UVersionInfo))) { |
| ucol_close(collator); |
| *status=U_MISSING_RESOURCE_ERROR; |
| return NULL; |
| } |
| } |
| return collator; |
| } |
| |
| |
| U_CAPI void U_EXPORT2 |
| ucol_close(UCollator *coll) |
| { |
| /* Here, it would be advisable to close: */ |
| /* - UData for UCA (unless we stuff it in the root resb */ |
| /* Again, do we need additional housekeeping... HMMM! */ |
| if(coll->freeOnClose == FALSE){ |
| return; /* for safeClone, if freeOnClose is FALSE, |
| don't free the other instance data */ |
| } |
| if(coll->freeOptionsOnClose != FALSE) { |
| if(coll->options != NULL) { |
| uprv_free(coll->options); |
| } |
| } |
| if(coll->mapping != NULL) { |
| ucmpe32_close(coll->mapping); |
| } |
| if(coll->rules != NULL && coll->freeRulesOnClose) { |
| uprv_free((UChar *)coll->rules); |
| } |
| if(coll->rb != NULL) { /* pointing to read-only memory */ |
| ures_close(coll->rb); |
| } else if(coll->hasRealData == TRUE) { |
| uprv_free((UCATableHeader *)coll->image); |
| } |
| uprv_free(coll); |
| } |
| |
| U_CAPI UCollator* U_EXPORT2 |
| ucol_openRules( const UChar *rules, |
| int32_t rulesLength, |
| UColAttributeValue normalizationMode, |
| UCollationStrength strength, |
| UParseError *parseError, |
| UErrorCode *status) |
| { |
| uint32_t listLen = 0; |
| UColTokenParser src; |
| UColAttributeValue norm; |
| UParseError tErr; |
| |
| if(status == NULL || U_FAILURE(*status)){ |
| return 0; |
| } |
| |
| if(rulesLength < -1 || (rules == NULL && rulesLength != 0)) { |
| *status = U_ILLEGAL_ARGUMENT_ERROR; |
| return 0; |
| } |
| |
| if(rulesLength == -1) { |
| rulesLength = u_strlen(rules); |
| } |
| |
| if(parseError == NULL){ |
| parseError = &tErr; |
| } |
| |
| switch((int)normalizationMode) { // TODO friendly deprecation helper, remove the (int) cast >2002-sep-30 |
| case UCOL_OFF: |
| case UNORM_NONE: // TODO friendly deprecation helper, remove >2002-sep-30 |
| norm = UCOL_OFF; |
| break; |
| case UCOL_ON: |
| case UNORM_NFD: // TODO friendly deprecation helper, remove >2002-sep-30 |
| norm = UCOL_ON; |
| break; |
| case UCOL_DEFAULT_NORMALIZATION: // TODO friendly deprecation helper, remove >2002-sep-30 |
| case UCOL_DEFAULT: |
| norm = UCOL_DEFAULT; |
| break; |
| default: |
| *status = U_ILLEGAL_ARGUMENT_ERROR; |
| return 0; |
| } |
| |
| ucol_initUCA(status); |
| |
| if(U_FAILURE(*status)){ |
| return 0; |
| } |
| |
| ucol_tok_initTokenList(&src, rules, rulesLength, UCA, status); |
| listLen = ucol_tok_assembleTokenList(&src,parseError, status); |
| |
| if(U_FAILURE(*status)) { |
| /* if status is U_ILLEGAL_ARGUMENT_ERROR, src->current points at the offending option */ |
| /* if status is U_INVALID_FORMAT_ERROR, src->current points after the problematic part of the rules */ |
| /* so something might be done here... or on lower level */ |
| #ifdef UCOL_DEBUG |
| if(*status == U_ILLEGAL_ARGUMENT_ERROR) { |
| fprintf(stderr, "bad option starting at offset %i\n", src.current-src.source); |
| } else { |
| fprintf(stderr, "invalid rule just before offset %i\n", src.current-src.source); |
| } |
| #endif |
| ucol_tok_closeTokenList(&src); |
| return NULL; |
| } |
| UCollator *result = NULL; |
| UCATableHeader *table = NULL; |
| |
| if(src.resultLen > 0) { /* we have a set of rules, let's make something of it */ |
| table = ucol_assembleTailoringTable(&src, status); |
| if(U_SUCCESS(*status)) { |
| result = ucol_initCollator(table,0,status); |
| result->hasRealData = TRUE; |
| } |
| } else { /* no rules, but no error either */ |
| // must be only options |
| // We will init the collator from UCA |
| result = ucol_initCollator(UCA->image,0,status); |
| // And set only the options |
| UColOptionSet *opts = (UColOptionSet *)uprv_malloc(sizeof(UColOptionSet)); |
| uprv_memcpy(opts, src.opts, sizeof(UColOptionSet)); |
| ucol_setOptionsFromHeader(result, opts, status); |
| result->freeOptionsOnClose = TRUE; |
| result->hasRealData = FALSE; |
| } |
| |
| if(U_SUCCESS(*status)) { |
| UChar *newRules; |
| result->dataInfo.dataVersion[0] = UCOL_BUILDER_VERSION; |
| newRules = (UChar *)uprv_malloc((rulesLength+1)*U_SIZEOF_UCHAR); |
| if(rulesLength > 0) { |
| uprv_memcpy(newRules, rules, rulesLength*U_SIZEOF_UCHAR); |
| } |
| newRules[rulesLength]=0; |
| result->rules = newRules; |
| result->rulesLength = rulesLength; |
| result->freeRulesOnClose = TRUE; |
| result->rb = 0; |
| ucol_setAttribute(result, UCOL_STRENGTH, strength, status); |
| ucol_setAttribute(result, UCOL_NORMALIZATION_MODE, norm, status); |
| } else { |
| if(table != NULL) { |
| uprv_free(table); |
| } |
| if(result != NULL) { |
| ucol_close(result); |
| } |
| result = NULL; |
| } |
| |
| ucol_tok_closeTokenList(&src); |
| |
| return result; |
| } |
| |
| /* This one is currently used by genrb & tests. After constructing from rules (tailoring),*/ |
| /* you should be able to get the binary chunk to write out... Doesn't look very full now */ |
| U_CAPI uint8_t* U_EXPORT2 |
| ucol_cloneRuleData(const UCollator *coll, int32_t *length, UErrorCode *status) |
| { |
| uint8_t *result = NULL; |
| if(U_FAILURE(*status)) { |
| return NULL; |
| } |
| if(coll->hasRealData == TRUE) { |
| *length = coll->image->size; |
| result = (uint8_t *)uprv_malloc(*length); |
| uprv_memcpy(result, coll->image, *length); |
| } else { |
| *length = (uint8_t)paddedsize(sizeof(UCATableHeader))+paddedsize(sizeof(UColOptionSet)); |
| result = (uint8_t *)uprv_malloc(*length); |
| uprv_memcpy(result, UCA->image, sizeof(UCATableHeader)); |
| uprv_memcpy(result+paddedsize(sizeof(UCATableHeader)), coll->options, sizeof(UColOptionSet)); |
| } |
| return result; |
| } |
| |
| void ucol_setOptionsFromHeader(UCollator* result, UColOptionSet * opts, UErrorCode *status) { |
| if(U_FAILURE(*status)) { |
| return; |
| } |
| result->caseFirst = opts->caseFirst; |
| result->caseLevel = opts->caseLevel; |
| result->frenchCollation = opts->frenchCollation; |
| result->normalizationMode = opts->normalizationMode; |
| result->strength = opts->strength; |
| result->variableTopValue = opts->variableTopValue; |
| result->alternateHandling = opts->alternateHandling; |
| result->hiraganaQ = opts->hiraganaQ; |
| |
| result->caseFirstisDefault = TRUE; |
| result->caseLevelisDefault = TRUE; |
| result->frenchCollationisDefault = TRUE; |
| result->normalizationModeisDefault = TRUE; |
| result->strengthisDefault = TRUE; |
| result->variableTopValueisDefault = TRUE; |
| result->hiraganaQisDefault = TRUE; |
| |
| ucol_updateInternalState(result); |
| |
| result->options = opts; |
| } |
| |
| #if 0 |
| // doesn't look like anybody is using this |
| void ucol_putOptionsToHeader(UCollator* result, UColOptionSet * opts, UErrorCode *status) { |
| if(U_FAILURE(*status)) { |
| return; |
| } |
| opts->caseFirst = result->caseFirst; |
| opts->caseLevel = result->caseLevel; |
| opts->frenchCollation = result->frenchCollation; |
| opts->normalizationMode = result->normalizationMode; |
| opts->strength = result->strength; |
| opts->variableTopValue = result->variableTopValue; |
| opts->alternateHandling = result->alternateHandling; |
| opts->hiraganaQ = opts->hiraganaQ; |
| } |
| #endif |
| |
| static const uint16_t *fcdTrieIndex=NULL; |
| |
| |
| /** |
| * Approximate determination if a character is at a contraction end. |
| * Guaranteed to be TRUE if a character is at the end of a contraction, |
| * otherwise it is not deterministic. |
| * @param c character to be determined |
| * @param coll collator |
| */ |
| static |
| inline UBool ucol_contractionEndCP(UChar c, const UCollator *coll) { |
| if (UTF_IS_TRAIL(c)) { |
| return TRUE; |
| } |
| |
| if (c < coll->minContrEndCP) { |
| return FALSE; |
| } |
| |
| int32_t hash = c; |
| uint8_t htbyte; |
| if (hash >= UCOL_UNSAFECP_TABLE_SIZE*8) { |
| hash = (hash & UCOL_UNSAFECP_TABLE_MASK) + 256; |
| } |
| htbyte = coll->contrEndCP[hash>>3]; |
| return (((htbyte >> (hash & 7)) & 1) == 1); |
| } |
| |
| |
| |
| /* |
| * i_getCombiningClass() |
| * A fast, at least partly inline version of u_getCombiningClass() |
| * This is a candidate for further optimization. Used heavily |
| * in contraction processing. |
| */ |
| static |
| inline uint8_t i_getCombiningClass(UChar c, const UCollator *coll) { |
| uint8_t sCC = 0; |
| if (c >= 0x300 && ucol_unsafeCP(c, coll)) { |
| sCC = u_getCombiningClass(c); |
| } |
| return sCC; |
| } |
| |
| |
| UCollator* ucol_initCollator(const UCATableHeader *image, UCollator *fillIn, UErrorCode *status) { |
| UChar c; |
| UCollator *result = fillIn; |
| if(U_FAILURE(*status) || image == NULL) { |
| return NULL; |
| } |
| |
| if(result == NULL) { |
| result = (UCollator *)uprv_malloc(sizeof(UCollator)); |
| if(result == NULL) { |
| *status = U_MEMORY_ALLOCATION_ERROR; |
| return result; |
| } |
| result->freeOnClose = TRUE; |
| } else { |
| result->freeOnClose = FALSE; |
| } |
| |
| result->image = image; |
| const uint8_t *mapping = (uint8_t*)result->image+result->image->mappingPosition; |
| CompactEIntArray *newUCAmapping = ucmpe32_openFromData(&mapping, status); |
| if(U_SUCCESS(*status)) { |
| result->mapping = newUCAmapping; |
| } else { |
| if(result->freeOnClose == TRUE) { |
| uprv_free(result); |
| result = NULL; |
| } |
| return result; |
| } |
| |
| result->latinOneMapping = (uint32_t*)((uint8_t*)result->image+result->image->latinOneMapping); |
| result->contractionCEs = (uint32_t*)((uint8_t*)result->image+result->image->contractionCEs); |
| result->contractionIndex = (UChar*)((uint8_t*)result->image+result->image->contractionIndex); |
| result->expansion = (uint32_t*)((uint8_t*)result->image+result->image->expansion); |
| |
| result->options = (UColOptionSet*)((uint8_t*)result->image+result->image->options); |
| result->freeOptionsOnClose = FALSE; |
| |
| /* set attributes */ |
| result->caseFirst = result->options->caseFirst; |
| result->caseLevel = result->options->caseLevel; |
| result->frenchCollation = result->options->frenchCollation; |
| result->normalizationMode = result->options->normalizationMode; |
| result->strength = result->options->strength; |
| result->variableTopValue = result->options->variableTopValue; |
| result->alternateHandling = result->options->alternateHandling; |
| result->hiraganaQ = result->options->hiraganaQ; |
| |
| result->caseFirstisDefault = TRUE; |
| result->caseLevelisDefault = TRUE; |
| result->frenchCollationisDefault = TRUE; |
| result->normalizationModeisDefault = TRUE; |
| result->strengthisDefault = TRUE; |
| result->variableTopValueisDefault = TRUE; |
| result->alternateHandlingisDefault = TRUE; |
| result->hiraganaQisDefault = TRUE; |
| |
| result->scriptOrder = NULL; |
| |
| result->rules = NULL; |
| result->rulesLength = 0; |
| |
| /* get the version info from UCATableHeader and populate the Collator struct*/ |
| result->dataInfo.dataVersion[0] = result->image->version[0]; /* UCA Builder version*/ |
| result->dataInfo.dataVersion[1] = result->image->version[1]; /* UCA Tailoring rules version*/ |
| |
| result->unsafeCP = (uint8_t *)result->image + result->image->unsafeCP; |
| result->minUnsafeCP = 0; |
| for (c=0; c<0x300; c++) { // Find the smallest unsafe char. |
| if (ucol_unsafeCP(c, result)) break; |
| } |
| result->minUnsafeCP = c; |
| |
| result->contrEndCP = (uint8_t *)result->image + result->image->contrEndCP; |
| result->minContrEndCP = 0; |
| for (c=0; c<0x300; c++) { // Find the Contraction-ending char. |
| if (ucol_contractionEndCP(c, result)) break; |
| } |
| result->minContrEndCP = c; |
| |
| /* max expansion tables */ |
| result->endExpansionCE = (uint32_t*)((uint8_t*)result->image + |
| result->image->endExpansionCE); |
| result->lastEndExpansionCE = result->endExpansionCE + |
| result->image->endExpansionCECount - 1; |
| result->expansionCESize = (uint8_t*)result->image + |
| result->image->expansionCESize; |
| |
| if (fcdTrieIndex == NULL) { |
| fcdTrieIndex = unorm_getFCDTrie(status); |
| } |
| |
| result->errorCode = *status; |
| ucol_updateInternalState(result); |
| |
| return result; |
| } |
| |
| U_CFUNC UBool |
| ucol_cleanup(void) |
| { |
| if (UCA_DATA_MEM) { |
| udata_close(UCA_DATA_MEM); |
| UCA_DATA_MEM = NULL; |
| } |
| if (UCA) { |
| /* Since UCA was opened with ucol_initCollator, ucol_close won't work. */ |
| ucmpe32_close(UCA->mapping); |
| uprv_free(UCA); |
| UCA = NULL; |
| } |
| return TRUE; |
| } |
| |
| void ucol_initUCA(UErrorCode *status) { |
| if(U_FAILURE(*status)) |
| return; |
| |
| if(UCA == NULL) { |
| UCollator *newUCA = (UCollator *)uprv_malloc(sizeof(UCollator)); |
| if (newUCA == NULL) { |
| *status = U_MEMORY_ALLOCATION_ERROR; |
| return; |
| } |
| |
| UDataMemory *result = udata_openChoice(NULL, UCA_DATA_TYPE, UCA_DATA_NAME, isAcceptableUCA, NULL, status); |
| |
| if(U_FAILURE(*status)) { |
| if (result) { |
| udata_close(result); |
| } |
| uprv_free(newUCA); |
| } |
| |
| if(result != NULL) { /* It looks like sometimes we can fail to find the data file */ |
| newUCA = ucol_initCollator((const UCATableHeader *)udata_getMemory(result), newUCA, status); |
| if(U_SUCCESS(*status)){ |
| newUCA->rb = NULL; |
| umtx_lock(NULL); |
| if(UCA == NULL) { |
| UCA = newUCA; |
| UCA_DATA_MEM = result; |
| result = NULL; |
| newUCA = NULL; |
| } |
| umtx_unlock(NULL); |
| |
| if(newUCA != NULL) { |
| udata_close(result); |
| uprv_free(newUCA); |
| } |
| else { |
| ucln_i18n_registerCleanup(); |
| } |
| }else{ |
| udata_close(result); |
| uprv_free(newUCA); |
| UCA= NULL; |
| } |
| } |
| } |
| } |
| |
| /* collIterNormalize Incremental Normalization happens here. */ |
| /* pick up the range of chars identifed by FCD, */ |
| /* normalize it into the collIterate's writable buffer, */ |
| /* switch the collIterate's state to use the writable buffer. */ |
| /* */ |
| static |
| void collIterNormalize(collIterate *collationSource) |
| { |
| UErrorCode status = U_ZERO_ERROR; |
| UChar *srcP = collationSource->pos - 1; /* Start of chars to normalize */ |
| UChar *endP = collationSource->fcdPosition; /* End of region to normalize+1 */ |
| int32_t normLen; |
| |
| normLen = unorm_decompose(collationSource->writableBuffer, (int32_t)collationSource->writableBufSize, |
| srcP, (int32_t)(endP - srcP), |
| FALSE, FALSE, |
| &status); |
| if(status == U_BUFFER_OVERFLOW_ERROR || status == U_STRING_NOT_TERMINATED_WARNING) { |
| // reallocate and terminate |
| if(!u_growBufferFromStatic(collationSource->stackWritableBuffer, |
| &collationSource->writableBuffer, |
| (int32_t *)&collationSource->writableBufSize, normLen + 1, |
| 0) |
| ) { |
| #ifdef UCOL_DEBUG |
| fprintf(stderr, "collIterNormalize(), out of memory\n"); |
| #endif |
| return; |
| } |
| status = U_ZERO_ERROR; |
| normLen = unorm_decompose(collationSource->writableBuffer, (int32_t)collationSource->writableBufSize, |
| srcP, (int32_t)(endP - srcP), |
| FALSE, FALSE, |
| &status); |
| } |
| if (U_FAILURE(status)) { |
| #ifdef UCOL_DEBUG |
| fprintf(stderr, "collIterNormalize(), unorm_decompose() failed, status = %s\n", u_errorName(status)); |
| #endif |
| return; |
| } |
| |
| if(collationSource->writableBuffer != collationSource->stackWritableBuffer) { |
| collationSource->flags |= UCOL_ITER_ALLOCATED; |
| } |
| collationSource->pos = collationSource->writableBuffer; |
| collationSource->origFlags = collationSource->flags; |
| collationSource->flags |= UCOL_ITER_INNORMBUF; |
| collationSource->flags &= ~(UCOL_ITER_NORM | UCOL_ITER_HASLEN); |
| } |
| |
| |
| |
| |
| |
| /* Incremental FCD check and normalize */ |
| /* Called from getNextCE when normalization state is suspect. */ |
| /* When entering, the state is known to be this: */ |
| /* o We are working in the main buffer of the collIterate, not the side */ |
| /* writable buffer. When in the side buffer, normalization mode is always off, */ |
| /* so we won't get here. */ |
| /* o The leading combining class from the current character is 0 or */ |
| /* the trailing combining class of the previous char was zero. */ |
| /* True because the previous call to this function will have always exited */ |
| /* that way, and we get called for every char where cc might be non-zero. */ |
| static |
| inline UBool collIterFCD(collIterate *collationSource) { |
| UChar c, c2; |
| const UChar *srcP, *endP; |
| uint8_t leadingCC; |
| uint8_t prevTrailingCC = 0; |
| uint16_t fcd; |
| UBool needNormalize = FALSE; |
| |
| srcP = collationSource->pos-1; |
| |
| if (collationSource->flags & UCOL_ITER_HASLEN) { |
| endP = collationSource->endp; |
| } else { |
| endP = NULL; |
| } |
| |
| // Get the trailing combining class of the current character. If it's zero, |
| // we are OK. |
| c = *srcP++; |
| /* trie access */ |
| fcd = unorm_getFCD16(fcdTrieIndex, c); |
| if (fcd != 0) { |
| if (UTF_IS_FIRST_SURROGATE(c)) { |
| if ((endP == NULL || srcP != endP) && UTF_IS_SECOND_SURROGATE(c2=*srcP)) { |
| ++srcP; |
| fcd = unorm_getFCD16FromSurrogatePair(fcdTrieIndex, fcd, c2); |
| } else { |
| fcd = 0; |
| } |
| } |
| |
| prevTrailingCC = (uint8_t)(fcd & LAST_BYTE_MASK_); |
| |
| if (prevTrailingCC != 0) { |
| // The current char has a non-zero trailing CC. Scan forward until we find |
| // a char with a leading cc of zero. |
| while (endP == NULL || srcP != endP) |
| { |
| const UChar *savedSrcP = srcP; |
| |
| c = *srcP++; |
| /* trie access */ |
| fcd = unorm_getFCD16(fcdTrieIndex, c); |
| if (fcd != 0 && UTF_IS_FIRST_SURROGATE(c)) { |
| if ((endP == NULL || srcP != endP) && UTF_IS_SECOND_SURROGATE(c2=*srcP)) { |
| ++srcP; |
| fcd = unorm_getFCD16FromSurrogatePair(fcdTrieIndex, fcd, c2); |
| } else { |
| fcd = 0; |
| } |
| } |
| leadingCC = (uint8_t)(fcd >> SECOND_LAST_BYTE_SHIFT_); |
| if (leadingCC == 0) { |
| srcP = savedSrcP; // Hit char that is not part of combining sequence. |
| // back up over it. (Could be surrogate pair!) |
| break; |
| } |
| |
| if (leadingCC < prevTrailingCC) { |
| needNormalize = TRUE; |
| } |
| |
| prevTrailingCC = (uint8_t)(fcd & LAST_BYTE_MASK_); |
| } |
| } |
| } |
| |
| collationSource->fcdPosition = (UChar *)srcP; |
| |
| return needNormalize; |
| } |
| |
| /****************************************************************************/ |
| /* Following are the CE retrieval functions */ |
| /* */ |
| /****************************************************************************/ |
| |
| /* there should be a macro version of this function in the header file */ |
| /* This is the first function that tries to fetch a collation element */ |
| /* If it's not succesfull or it encounters a more difficult situation */ |
| /* some more sofisticated and slower functions are invoked */ |
| static |
| inline uint32_t ucol_IGetNextCE(const UCollator *coll, collIterate *collationSource, UErrorCode *status) { |
| uint32_t order; |
| if (collationSource->CEpos > collationSource->toReturn) { /* Are there any CEs from previous expansions? */ |
| order = *(collationSource->toReturn++); /* if so, return them */ |
| if(collationSource->CEpos == collationSource->toReturn) { |
| collationSource->CEpos = collationSource->toReturn = collationSource->CEs; |
| } |
| return order; |
| } |
| |
| UChar ch; |
| |
| for (;;) /* Loop handles case when incremental normalize switches */ |
| { /* to or from the side buffer / original string, and we */ |
| /* need to start again to get the next character. */ |
| |
| if ((collationSource->flags & (UCOL_ITER_HASLEN | UCOL_ITER_INNORMBUF | UCOL_ITER_NORM | UCOL_HIRAGANA_Q)) == 0) |
| { |
| // The source string is null terminated and we're not working from the side buffer, |
| // and we're not normalizing. This is the fast path. |
| // (We can be in the side buffer for Thai pre-vowel reordering even when not normalizing.) |
| ch = *collationSource->pos++; |
| if (ch != 0) { |
| break; |
| } |
| else { |
| return UCOL_NO_MORE_CES; |
| } |
| } |
| |
| if (collationSource->flags & UCOL_ITER_HASLEN) { |
| // Normal path for strings when length is specified. |
| // (We can't be in side buffer because it is always null terminated.) |
| if (collationSource->pos >= collationSource->endp) { |
| // Ran off of the end of the main source string. We're done. |
| return UCOL_NO_MORE_CES; |
| } |
| ch = *collationSource->pos++; |
| } |
| else |
| { |
| // Null terminated string. |
| ch = *collationSource->pos++; |
| if (ch == 0) { |
| // Ran off end of buffer. |
| if ((collationSource->flags & UCOL_ITER_INNORMBUF) == 0) { |
| // Ran off end of main string. backing up one character. |
| collationSource->pos--; |
| return UCOL_NO_MORE_CES; |
| } |
| else |
| { |
| // Hit null in the normalize side buffer. |
| // Usually this means the end of the normalized data, |
| // except for one odd case: a null followed by combining chars, |
| // which is the case if we are at the start of the buffer. |
| if (collationSource->pos == collationSource->writableBuffer+1) { |
| break; |
| } |
| |
| // Null marked end of side buffer. |
| // Revert to the main string and |
| // loop back to top to try again to get a character. |
| collationSource->pos = collationSource->fcdPosition; |
| collationSource->flags = collationSource->origFlags; |
| continue; |
| } |
| } |
| } |
| |
| if(collationSource->flags&UCOL_HIRAGANA_Q) { |
| if((ch>=0x3040 && ch<=0x3094) || ch == 0x309d || ch == 0x309e) { |
| collationSource->flags |= UCOL_WAS_HIRAGANA; |
| } else { |
| collationSource->flags &= ~UCOL_WAS_HIRAGANA; |
| } |
| } |
| |
| // We've got a character. See if there's any fcd and/or normalization stuff to do. |
| // Note that UCOL_ITER_NORM flag is always zero when we are in the side buffer. |
| if ((collationSource->flags & UCOL_ITER_NORM) == 0) { |
| break; |
| } |
| |
| if (collationSource->fcdPosition >= collationSource->pos) { |
| // An earlier FCD check has already covered the current character. |
| // We can go ahead and process this char. |
| break; |
| } |
| |
| if (ch < ZERO_CC_LIMIT_ ) { |
| // Fast fcd safe path. Trailing combining class == 0. This char is OK. |
| break; |
| } |
| |
| if (ch < NFC_ZERO_CC_BLOCK_LIMIT_) { |
| // We need to peek at the next character in order to tell if we are FCD |
| if ((collationSource->flags & UCOL_ITER_HASLEN) && collationSource->pos >= collationSource->endp) { |
| // We are at the last char of source string. |
| // It is always OK for FCD check. |
| break; |
| } |
| |
| // Not at last char of source string (or we'll check against terminating null). Do the FCD fast test |
| if (*collationSource->pos < NFC_ZERO_CC_BLOCK_LIMIT_) { |
| break; |
| } |
| } |
| |
| // Need a more complete FCD check and possible normalization. |
| if (collIterFCD(collationSource)) { |
| collIterNormalize(collationSource); |
| } |
| if ((collationSource->flags & UCOL_ITER_INNORMBUF) == 0) { |
| // No normalization was needed. Go ahead and process the char we already had. |
| break; |
| } |
| |
| // Some normalization happened. Next loop iteration will pick up a char |
| // from the normalization buffer. |
| |
| } // end for (;;) |
| |
| |
| if (ch <= 0xFF) { |
| /* For latin-1 characters we never need to fall back to the UCA table */ |
| /* because all of the UCA data is replicated in the latinOneMapping array */ |
| order = coll->latinOneMapping[ch]; |
| if (order > UCOL_NOT_FOUND) { |
| order = ucol_prv_getSpecialCE(coll, ch, order, collationSource, status); |
| } |
| } |
| else |
| { |
| order = ucmpe32_get(coll->mapping, ch); /* we'll go for slightly slower trie */ |
| if(order > UCOL_NOT_FOUND) { /* if a CE is special */ |
| order = ucol_prv_getSpecialCE(coll, ch, order, collationSource, status); /* and try to get the special CE */ |
| } |
| if(order == UCOL_NOT_FOUND) { /* We couldn't find a good CE in the tailoring */ |
| /* if we got here, the codepoint MUST be over 0xFF - so we look directly in the trie */ |
| order = ucmpe32_get(UCA->mapping, ch); |
| |
| if(order > UCOL_NOT_FOUND) { /* UCA also gives us a special CE */ |
| order = ucol_prv_getSpecialCE(UCA, ch, order, collationSource, status); |
| } |
| } |
| } |
| return order; /* return the CE */ |
| } |
| |
| /* ucol_getNextCE, out-of-line version for use from other files. */ |
| U_CAPI uint32_t U_EXPORT2 |
| ucol_getNextCE(const UCollator *coll, collIterate *collationSource, UErrorCode *status) { |
| return ucol_IGetNextCE(coll, collationSource, status); |
| } |
| |
| |
| /** |
| * Incremental previous normalization happens here. Pick up the range of chars |
| * identifed by FCD, normalize it into the collIterate's writable buffer, |
| * switch the collIterate's state to use the writable buffer. |
| * @param data collation iterator data |
| */ |
| static |
| void collPrevIterNormalize(collIterate *data) |
| { |
| UErrorCode status = U_ZERO_ERROR; |
| UChar *pEnd = data->pos; /* End normalize + 1 */ |
| UChar *pStart; |
| uint32_t normLen; |
| UChar *pStartNorm; |
| |
| /* Start normalize */ |
| if (data->fcdPosition == NULL) { |
| pStart = data->string; |
| } |
| else { |
| pStart = data->fcdPosition + 1; |
| } |
| |
| normLen = unorm_normalize(pStart, (pEnd - pStart) + 1, UNORM_NFD, 0, |
| data->writableBuffer, 0, &status); |
| |
| if (data->writableBufSize <= normLen) { |
| freeHeapWritableBuffer(data); |
| data->writableBuffer = (UChar *)uprv_malloc((normLen + 1) * |
| sizeof(UChar)); |
| data->flags |= UCOL_ITER_ALLOCATED; |
| /* to handle the zero termination */ |
| data->writableBufSize = normLen + 1; |
| } |
| status = U_ZERO_ERROR; |
| /* |
| this puts the null termination infront of the normalized string instead |
| of the end |
| */ |
| pStartNorm = data->writableBuffer + (data->writableBufSize - normLen); |
| *(pStartNorm - 1) = 0; |
| unorm_normalize(pStart, (pEnd - pStart) + 1, UNORM_NFD, 0, pStartNorm, |
| normLen, &status); |
| |
| data->pos = data->writableBuffer + data->writableBufSize; |
| data->origFlags = data->flags; |
| data->flags |= UCOL_ITER_INNORMBUF; |
| data->flags &= ~(UCOL_ITER_NORM | UCOL_ITER_HASLEN); |
| } |
| |
| |
| /** |
| * Incremental FCD check for previous iteration and normalize. Called from |
| * getPrevCE when normalization state is suspect. |
| * When entering, the state is known to be this: |
| * o We are working in the main buffer of the collIterate, not the side |
| * writable buffer. When in the side buffer, normalization mode is always |
| * off, so we won't get here. |
| * o The leading combining class from the current character is 0 or the |
| * trailing combining class of the previous char was zero. |
| * True because the previous call to this function will have always exited |
| * that way, and we get called for every char where cc might be non-zero. |
| * @param data collation iterate struct |
| * @return normalization status, TRUE for normalization to be done, FALSE |
| * otherwise |
| */ |
| static |
| inline UBool collPrevIterFCD(collIterate *data) |
| { |
| const UChar *src, *start; |
| UChar c, c2; |
| uint8_t leadingCC; |
| uint8_t trailingCC = 0; |
| uint16_t fcd; |
| UBool result = FALSE; |
| |
| start = data->string; |
| src = data->pos + 1; |
| |
| /* Get the trailing combining class of the current character. */ |
| c = *--src; |
| if (!UTF_IS_SURROGATE(c)) { |
| fcd = unorm_getFCD16(fcdTrieIndex, c); |
| } else if (UTF_IS_SECOND_SURROGATE(c) && start < src && UTF_IS_FIRST_SURROGATE(c2 = *(src - 1))) { |
| --src; |
| fcd = unorm_getFCD16(fcdTrieIndex, c2); |
| if (fcd != 0) { |
| fcd = unorm_getFCD16FromSurrogatePair(fcdTrieIndex, fcd, c); |
| } |
| } else /* unpaired surrogate */ { |
| fcd = 0; |
| } |
| |
| leadingCC = (uint8_t)(fcd >> SECOND_LAST_BYTE_SHIFT_); |
| |
| if (leadingCC != 0) { |
| /* |
| The current char has a non-zero leading combining class. |
| Scan backward until we find a char with a trailing cc of zero. |
| */ |
| for (;;) |
| { |
| if (start == src) { |
| data->fcdPosition = NULL; |
| return result; |
| } |
| |
| c = *--src; |
| if (!UTF_IS_SURROGATE(c)) { |
| fcd = unorm_getFCD16(fcdTrieIndex, c); |
| } else if (UTF_IS_SECOND_SURROGATE(c) && start < src && UTF_IS_FIRST_SURROGATE(c2 = *(src - 1))) { |
| --src; |
| fcd = unorm_getFCD16(fcdTrieIndex, c2); |
| if (fcd != 0) { |
| fcd = unorm_getFCD16FromSurrogatePair(fcdTrieIndex, fcd, c); |
| } |
| } else /* unpaired surrogate */ { |
| fcd = 0; |
| } |
| |
| trailingCC = (uint8_t)(fcd & LAST_BYTE_MASK_); |
| |
| if (trailingCC == 0) { |
| break; |
| } |
| |
| if (leadingCC < trailingCC) { |
| result = TRUE; |
| } |
| |
| leadingCC = (uint8_t)(fcd >> SECOND_LAST_BYTE_SHIFT_); |
| } |
| } |
| |
| data->fcdPosition = (UChar *)src; |
| |
| return result; |
| } |
| |
| /** |
| * Determines if we are at the start of the data string in the backwards |
| * collation iterator |
| * @param data collation iterator |
| * @return TRUE if we are at the start |
| */ |
| static |
| inline UBool isAtStartPrevIterate(collIterate *data) { |
| return (data->pos == data->string) || |
| ((data->flags & UCOL_ITER_INNORMBUF) && |
| *(data->pos - 1) == 0 && data->fcdPosition == NULL); |
| } |
| |
| /** |
| * Inline function that gets a simple CE. |
| * So what it does is that it will first check the expansion buffer. If the |
| * expansion buffer is not empty, ie the end pointer to the expansion buffer |
| * is different from the string pointer, we return the collation element at the |
| * return pointer and decrement it. |
| * For more complicated CEs it resorts to getComplicatedCE. |
| * @param coll collator data |
| * @param data collation iterator struct |
| * @param status error status |
| */ |
| static |
| inline uint32_t ucol_IGetPrevCE(const UCollator *coll, collIterate *data, |
| UErrorCode *status) |
| { |
| uint32_t result = UCOL_NULLORDER; |
| if (data->CEpos > data->CEs) { |
| data->toReturn --; |
| result = *(data->toReturn); |
| if (data->CEs == data->toReturn) { |
| data->CEpos = data->toReturn; |
| } |
| } |
| else { |
| UChar ch; |
| /* |
| Loop handles case when incremental normalize switches to or from the |
| side buffer / original string, and we need to start again to get the |
| next character. |
| */ |
| for (;;) { |
| if (data->flags & UCOL_ITER_HASLEN) { |
| /* |
| Normal path for strings when length is specified. |
| Not in side buffer because it is always null terminated. |
| */ |
| if (data->pos <= data->string) { |
| /* End of the main source string */ |
| return UCOL_NO_MORE_CES; |
| } |
| data->pos --; |
| ch = *data->pos; |
| } |
| else { |
| data->pos --; |
| ch = *data->pos; |
| /* we are in the side buffer. */ |
| if (ch == 0) { |
| /* |
| At the start of the normalize side buffer. |
| Go back to string. |
| Because pointer points to the last accessed character, |
| hence we have to increment it by one here. |
| */ |
| if (data->fcdPosition == NULL) { |
| data->pos = data->string; |
| return UCOL_NO_MORE_CES; |
| } |
| else { |
| data->pos = data->fcdPosition + 1; |
| } |
| data->flags = data->origFlags; |
| continue; |
| } |
| } |
| |
| if(data->flags&UCOL_HIRAGANA_Q) { |
| if(ch>=0x3040 && ch<=0x309f) { |
| data->flags |= UCOL_WAS_HIRAGANA; |
| } else { |
| data->flags &= ~UCOL_WAS_HIRAGANA; |
| } |
| } |
| |
| /* |
| * got a character to determine if there's fcd and/or normalization |
| * stuff to do. |
| * if the current character is not fcd. |
| * if current character is at the start of the string |
| * Trailing combining class == 0. |
| * Note if pos is in the writablebuffer, norm is always 0 |
| */ |
| if (ch < ZERO_CC_LIMIT_ || |
| (data->flags & UCOL_ITER_NORM) == 0 || |
| (data->fcdPosition != NULL && data->fcdPosition <= data->pos) |
| || data->string == data->pos) { |
| break; |
| } |
| |
| if (ch < NFC_ZERO_CC_BLOCK_LIMIT_) { |
| /* if next character is FCD */ |
| if (data->pos == data->string) { |
| /* First char of string is always OK for FCD check */ |
| break; |
| } |
| |
| /* Not first char of string, do the FCD fast test */ |
| if (*(data->pos - 1) < NFC_ZERO_CC_BLOCK_LIMIT_) { |
| break; |
| } |
| } |
| |
| /* Need a more complete FCD check and possible normalization. */ |
| if (collPrevIterFCD(data)) { |
| collPrevIterNormalize(data); |
| } |
| |
| if ((data->flags & UCOL_ITER_INNORMBUF) == 0) { |
| /* No normalization. Go ahead and process the char. */ |
| break; |
| } |
| |
| /* |
| Some normalization happened. |
| Next loop picks up a char from the normalization buffer. |
| */ |
| } |
| |
| /* attempt to handle contractions, after removal of the backwards |
| contraction |
| */ |
| if (ucol_contractionEndCP(ch, coll) && !isAtStartPrevIterate(data)) { |
| result = ucol_prv_getSpecialPrevCE(coll, ch, UCOL_CONTRACTION, data, status); |
| } |
| else { |
| if (ch <= 0xFF) { |
| result = coll->latinOneMapping[ch]; |
| if (result > UCOL_NOT_FOUND) { |
| result = ucol_prv_getSpecialPrevCE(coll, ch, result, data, status); |
| } |
| } |
| else { |
| if ((data->flags & UCOL_ITER_INNORMBUF) == 0 && |
| UCOL_ISTHAIBASECONSONANT(ch) && data->pos > data->string && |
| UCOL_ISTHAIPREVOWEL(*(data->pos -1))) |
| { |
| result = UCOL_THAI; |
| } |
| else { |
| result = ucmpe32_get(coll->mapping, ch); |
| } |
| if (result > UCOL_NOT_FOUND) { |
| result = ucol_prv_getSpecialPrevCE(coll, ch, result, data, status); |
| } |
| if (result == UCOL_NOT_FOUND) { |
| if (!isAtStartPrevIterate(data) && |
| ucol_contractionEndCP(ch, data->coll)) { |
| result = UCOL_CONTRACTION; |
| } |
| else { |
| result = ucmpe32_get(UCA->mapping, ch); |
| } |
| |
| if (result > UCOL_NOT_FOUND) { |
| result = ucol_prv_getSpecialPrevCE(UCA, ch, result, data, status); |
| } |
| } |
| } |
| } |
| } |
| return result; |
| } |
| |
| |
| /* ucol_getPrevCE, out-of-line version for use from other files. */ |
| U_CAPI uint32_t U_EXPORT2 |
| ucol_getPrevCE(const UCollator *coll, collIterate *data, |
| UErrorCode *status) { |
| return ucol_IGetPrevCE(coll, data, status); |
| } |
| |
| |
| /* this should be connected to special Jamo handling */ |
| U_CAPI uint32_t U_EXPORT2 |
| ucol_getFirstCE(const UCollator *coll, UChar u, UErrorCode *status) { |
| collIterate colIt; |
| uint32_t order; |
| IInit_collIterate(coll, &u, 1, &colIt); |
| order = ucol_IGetNextCE(coll, &colIt, status); |
| /*UCOL_GETNEXTCE(order, coll, colIt, status);*/ |
| return order; |
| } |
| |
| /** |
| * Inserts the argument character into the end of the buffer pushing back the |
| * null terminator. |
| * @param data collIterate struct data |
| * @param pNull pointer to the null termination |
| * @param ch character to be appended |
| * @return the position of the new addition |
| */ |
| static |
| inline UChar * insertBufferEnd(collIterate *data, UChar *pNull, UChar ch) |
| { |
| uint32_t size = data->writableBufSize; |
| UChar *newbuffer; |
| const uint32_t incsize = 5; |
| |
| if ((data->writableBuffer + size) > (pNull + 1)) { |
| *pNull = ch; |
| *(pNull + 1) = 0; |
| return pNull; |
| } |
| |
| /* |
| buffer will always be null terminated at the end. |
| giving extra space since it is likely that more characters will be added. |
| */ |
| size += incsize; |
| newbuffer = (UChar *)uprv_malloc(sizeof(UChar) * size); |
| uprv_memcpy(newbuffer, data->writableBuffer, |
| data->writableBufSize * sizeof(UChar)); |
| |
| freeHeapWritableBuffer(data); |
| data->writableBufSize = size; |
| data->writableBuffer = newbuffer; |
| |
| newbuffer = newbuffer + data->writableBufSize; |
| *newbuffer = ch; |
| *(newbuffer + 1) = 0; |
| return newbuffer; |
| } |
| |
| /** |
| * Inserts the argument string into the end of the buffer pushing back the |
| * null terminator. |
| * @param data collIterate struct data |
| * @param pNull pointer to the null termination |
| * @param string to be appended |
| * @param length of the string to be appended |
| * @return the position of the new addition |
| */ |
| static |
| inline UChar * insertBufferEnd(collIterate *data, UChar *pNull, UChar *str, |
| int32_t length) |
| { |
| uint32_t size = pNull - data->writableBuffer; |
| UChar *newbuffer; |
| |
| if (data->writableBuffer + data->writableBufSize > pNull + length + 1) { |
| uprv_memcpy(pNull, str, length * sizeof(UChar)); |
| *(pNull + length) = 0; |
| return pNull; |
| } |
| |
| /* |
| buffer will always be null terminated at the end. |
| giving extra space since it is likely that more characters will be added. |
| */ |
| newbuffer = (UChar *)uprv_malloc(sizeof(UChar) * (size + length + 1)); |
| uprv_memcpy(newbuffer, data->writableBuffer, size * sizeof(UChar)); |
| uprv_memcpy(newbuffer + size, str, length * sizeof(UChar)); |
| |
| freeHeapWritableBuffer(data); |
| data->writableBufSize = size + length + 1; |
| data->writableBuffer = newbuffer; |
| |
| return newbuffer; |
| } |
| |
| /** |
| * Special normalization function for contraction in the forwards iterator. |
| * This normalization sequence will place the current character at source->pos |
| * and its following normalized sequence into the buffer. |
| * The fcd position, pos will be changed. |
| * pos will now point to positions in the buffer. |
| * Flags will be changed accordingly. |
| * @param data collation iterator data |
| */ |
| static |
| inline void normalizeNextContraction(collIterate *data) |
| { |
| UChar *buffer = data->writableBuffer; |
| uint32_t buffersize = data->writableBufSize; |
| uint32_t strsize; |
| UErrorCode status = U_ZERO_ERROR; |
| /* because the pointer points to the next character */ |
| UChar *pStart = data->pos - 1; |
| UChar *pEnd; |
| uint32_t normLen; |
| UChar *pStartNorm; |
| |
| if ((data->flags & UCOL_ITER_INNORMBUF) == 0) { |
| *data->writableBuffer = *(pStart - 1); |
| strsize = 1; |
| } |
| else { |
| strsize = u_strlen(data->writableBuffer); |
| } |
| |
| pEnd = data->fcdPosition; |
| |
| normLen = unorm_normalize(pStart, pEnd - pStart, UNORM_NFD, 0, buffer, 0, |
| &status); |
| |
| if (buffersize <= normLen + strsize) { |
| uint32_t size = strsize + normLen + 1; |
| UChar *temp = (UChar *)uprv_malloc(size * sizeof(UChar)); |
| uprv_memcpy(temp, buffer, sizeof(UChar) * strsize); |
| freeHeapWritableBuffer(data); |
| data->writableBuffer = temp; |
| data->writableBufSize = size; |
| data->flags |= UCOL_ITER_ALLOCATED; |
| } |
| |
| status = U_ZERO_ERROR; |
| pStartNorm = buffer + strsize; |
| /* null-termination will be added here */ |
| unorm_normalize(pStart, pEnd - pStart, UNORM_NFD, 0, pStartNorm, |
| normLen + 1, &status); |
| |
| data->pos = data->writableBuffer + strsize; |
| data->origFlags = data->flags; |
| data->flags |= UCOL_ITER_INNORMBUF; |
| data->flags &= ~(UCOL_ITER_NORM | UCOL_ITER_HASLEN); |
| } |
| |
| /** |
| * Contraction character management function that returns the next character |
| * for the forwards iterator. |
| * Does nothing if the next character is in buffer and not the first character |
| * in it. |
| * Else it checks next character in data string to see if it is normalizable. |
| * If it is not, the character is simply copied into the buffer, else |
| * the whole normalized substring is copied into the buffer, including the |
| * current character. |
| * @param data collation element iterator data |
| * @return next character |
| */ |
| static |
| inline UChar getNextNormalizedChar(collIterate *data) |
| { |
| UChar nextch; |
| UChar ch; |
| if ((data->flags & (UCOL_ITER_NORM | UCOL_ITER_INNORMBUF)) == 0 ) { |
| /* if no normalization and not in buffer. */ |
| return *(data->pos ++); |
| } |
| |
| UChar *pEndWritableBuffer = NULL; |
| UBool innormbuf = (UBool)(data->flags & UCOL_ITER_INNORMBUF); |
| if ((innormbuf && *data->pos != 0) || |
| (data->fcdPosition != NULL && !innormbuf && |
| data->pos < data->fcdPosition)) { |
| /* |
| if next character is in normalized buffer, no further normalization |
| is required |
| */ |
| return *(data->pos ++); |
| } |
| |
| if (data->flags & UCOL_ITER_HASLEN) { |
| /* in data string */ |
| if (data->pos + 1 == data->endp) { |
| return *(data->pos ++); |
| } |
| } |
| else { |
| if (innormbuf) { |
| /* |
| in writable buffer, at this point fcdPosition can not be |
| pointing to the end of the data string. see contracting tag. |
| */ |
| if (*(data->fcdPosition + 1) == 0 || |
| data->fcdPosition + 1 == data->endp) { |
| /* at the end of the string, dump it into the normalizer */ |
| data->pos = insertBufferEnd(data, data->pos, |
| *(data->fcdPosition)) + 1; |
| return *(data->fcdPosition ++); |
| } |
| pEndWritableBuffer = data->pos; |
| data->pos = data->fcdPosition; |
| } |
| else { |
| if (*(data->pos + 1) == 0) { |
| return *(data->pos ++); |
| } |
| } |
| } |
| |
| ch = *data->pos ++; |
| nextch = *data->pos; |
| |
| /* |
| * if the current character is not fcd. |
| * Trailing combining class == 0. |
| */ |
| if ((data->fcdPosition == NULL || data->fcdPosition < data->pos) && |
| (nextch >= NFC_ZERO_CC_BLOCK_LIMIT_ || |
| ch >= NFC_ZERO_CC_BLOCK_LIMIT_)) { |
| /* |
| Need a more complete FCD check and possible normalization. |
| normalize substring will be appended to buffer |
| */ |
| if (collIterFCD(data)) { |
| normalizeNextContraction(data); |
| return *(data->pos ++); |
| } |
| else if (innormbuf) { |
| /* fcdposition shifted even when there's no normalization, if we |
| don't input the rest into this, we'll get the wrong position when |
| we reach the end of the writableBuffer */ |
| int32_t length = data->fcdPosition - data->pos + 1; |
| data->pos = insertBufferEnd(data, pEndWritableBuffer, |
| data->pos - 1, length); |
| return *(data->pos ++); |
| } |
| } |
| |
| if (innormbuf) { |
| /* |
| no normalization is to be done hence only one character will be |
| appended to the buffer. |
| */ |
| data->pos = insertBufferEnd(data, pEndWritableBuffer, ch) + 1; |
| } |
| |
| /* points back to the pos in string */ |
| return ch; |
| } |
| |
| /** |
| * Function to copy the buffer into writableBuffer and sets the fcd position to |
| * the correct position |
| * @param source data string source |
| * @param buffer character buffer |
| * @param tempdb current position in buffer that has been used up |
| */ |
| static |
| inline void setDiscontiguosAttribute(collIterate *source, UChar *buffer, |
| UChar *tempdb) |
| { |
| /* okay confusing part here. to ensure that the skipped characters are |
| considered later, we need to place it in the appropriate position in the |
| normalization buffer and reassign the pos pointer. simple case if pos |
| reside in string, simply copy to normalization buffer and |
| fcdposition = pos, pos = start of normalization buffer. if pos in |
| normalization buffer, we'll insert the copy infront of pos and point pos |
| to the start of the normalization buffer. why am i doing these copies? |
| well, so that the whole chunk of codes in the getNextCE, ucol_prv_getSpecialCE does |
| not require any changes, which be really painful. */ |
| uint32_t length = u_strlen(buffer);; |
| if (source->flags & UCOL_ITER_INNORMBUF) { |
| u_strcpy(tempdb, source->pos); |
| } |
| else { |
| source->fcdPosition = source->pos; |
| source->origFlags = source->flags; |
| source->flags |= UCOL_ITER_INNORMBUF; |
| source->flags &= ~(UCOL_ITER_NORM | UCOL_ITER_HASLEN); |
| } |
| |
| if (length >= source->writableBufSize) { |
| freeHeapWritableBuffer(source); |
| source->writableBuffer = |
| (UChar *)uprv_malloc((length + 1) * sizeof(UChar)); |
| source->writableBufSize = length; |
| } |
| |
| u_strcpy(source->writableBuffer, buffer); |
| source->pos = source->writableBuffer; |
| } |
| |
| /** |
| * Function to get the discontiguos collation element within the source. |
| * Note this function will set the position to the appropriate places. |
| * @param coll current collator used |
| * @param source data string source |
| * @param constart index to the start character in the contraction table |
| * @return discontiguos collation element offset |
| */ |
| static |
| uint32_t getDiscontiguous(const UCollator *coll, collIterate *source, |
| const UChar *constart) |
| { |
| /* source->pos currently points to the second combining character after |
| the start character */ |
| UChar *temppos = source->pos; |
| UChar buffer[UCOL_MAX_BUFFER]; |
| UChar *tempdb = buffer; |
| const UChar *tempconstart = constart; |
| uint8_t tempflags = source->flags; |
| UBool multicontraction = FALSE; |
| UChar *tempbufferpos = 0; |
| |
| *tempdb = *(source->pos - 1); |
| tempdb ++; |
| while (TRUE) { |
| UChar *UCharOffset; |
| UChar schar, |
| tchar; |
| uint32_t result; |
| |
| if (((source->flags & UCOL_ITER_HASLEN) && source->pos >= source->endp) |
| || (*source->pos == 0 && |
| ((source->flags & UCOL_ITER_INNORMBUF) == 0 || |
| source->fcdPosition == NULL || |
| source->fcdPosition == source->endp || |
| *(source->fcdPosition) == 0 || |
| u_getCombiningClass(*(source->fcdPosition)) == 0)) || |
| /* end of string in null terminated string or stopped by a |
| null character, note fcd does not always point to a base |
| character after the discontiguos change */ |
| u_getCombiningClass(*(source->pos)) == 0) { |
| //constart = (UChar *)coll->image + getContractOffset(CE); |
| if (multicontraction) { |
| *tempbufferpos = 0; |
| source->pos = temppos - 1; |
| setDiscontiguosAttribute(source, buffer, tempdb); |
| return *(coll->contractionCEs + |
| (tempconstart - coll->contractionIndex)); |
| } |
| constart = tempconstart; |
| break; |
| } |
| |
| UCharOffset = (UChar *)(tempconstart + 1); /* skip the backward offset*/ |
| schar = getNextNormalizedChar(source); |
| |
| while (schar > (tchar = *UCharOffset)) { |
| UCharOffset++; |
| } |
| |
| if (schar != tchar) { |
| /* not the correct codepoint. we stuff the current codepoint into |
| the discontiguos buffer and try the next character */ |
| *tempdb = schar; |
| tempdb ++; |
| continue; |
| } |
| else { |
| if (u_getCombiningClass(schar) == |
| u_getCombiningClass(*(source->pos - 2))) { |
| *tempdb = schar; |
| tempdb ++; |
| continue; |
| } |
| result = *(coll->contractionCEs + |
| (UCharOffset - coll->contractionIndex)); |
| } |
| *tempdb = 0; |
| |
| if (result == UCOL_NOT_FOUND) { |
| break; |
| } else if (isContraction(result)) { |
| /* this is a multi-contraction*/ |
| tempconstart = (UChar *)coll->image + getContractOffset(result); |
| if (*(coll->contractionCEs + (constart - coll->contractionIndex)) |
| != UCOL_NOT_FOUND) { |
| multicontraction = TRUE; |
| temppos = source->pos + 1; |
| tempbufferpos = buffer + u_strlen(buffer); |
| } |
| } else { |
| setDiscontiguosAttribute(source, buffer, tempdb); |
| return result; |
| } |
| } |
| |
| /* no problems simply reverting just like that, |
| if we are in string before getting into this function, points back to |
| string hence no problem. |
| if we are in normalization buffer before getting into this function, |
| since we'll never use another normalization within this function, we |
| know that fcdposition points to a base character. the normalization buffer |
| never change, hence this revert works. */ |
| source->pos = temppos - 1; |
| source->flags = tempflags; |
| return *(coll->contractionCEs + (constart - coll->contractionIndex)); |
| } |
| |
| static |
| inline uint32_t getImplicit(UChar32 cp, collIterate *collationSource, uint32_t hanFixup) { |
| if ((cp & 0xFFFE) == 0xFFFE || (0xD800 <= cp && cp <= 0xDC00)) { |
| return 0; /* illegal code value, use completely ignoreable! */ |
| } |
| /* |
| we must skip all 00, 01, 02 bytes, so most bytes have 253 values |
| we must leave a gap of 01 between all values of the last byte, so the last byte has 126 values (3 byte case) |
| we shift so that HAN all has the same first primary, for compression. |
| for the 4 byte case, we make the gap as large as we can fit. |
| Three byte forms are EC xx xx, ED xx xx, EE xx xx (with a gap of 1) |
| Four byte forms (most supplementaries) are EF xx xx xx (with a gap of LAST2_MULTIPLIER == 14) |
| */ |
| int32_t last0 = cp - IMPLICIT_BOUNDARY_; |
| uint32_t r = 0; |
| if (last0 < 0) { |
| cp += IMPLICIT_HAN_SHIFT_; // shift so HAN shares single block |
| int32_t last1 = cp / IMPLICIT_LAST_COUNT_; |
| last0 = cp % IMPLICIT_LAST_COUNT_; |
| int32_t last2 = last1 / IMPLICIT_OTHER_COUNT_; |
| last1 %= IMPLICIT_OTHER_COUNT_; |
| r = 0xEC030300 - hanFixup + (last2 << 24) + (last1 << 16) + (last0 << 9); |
| } else { |
| int32_t last1 = last0 / IMPLICIT_LAST_COUNT2_; |
| last0 %= IMPLICIT_LAST_COUNT2_; |
| int32_t last2 = last1 / IMPLICIT_OTHER_COUNT_; |
| last1 %= IMPLICIT_OTHER_COUNT_; |
| r = 0xEF030303 - hanFixup + (last2 << 16) + (last1 << 8) + (last0 * IMPLICIT_LAST2_MULTIPLIER_); |
| } |
| *(collationSource->CEpos++) = ((r & 0x0000FFFF)<<16) | 0x000000C0; |
| return (r & UCOL_PRIMARYMASK) | 0x00000505; // This was 'order' |
| } |
| |
| static |
| inline UChar getPrevNormalizedChar(collIterate *data); |
| |
| /* This function handles the special CEs like contractions, expansions, surrogates, Thai */ |
| /* It is called by getNextCE */ |
| |
| uint32_t ucol_prv_getSpecialCE(const UCollator *coll, UChar ch, uint32_t CE, collIterate *source, UErrorCode *status) { |
| collIterateState entryState; |
| backupState(source, &entryState); |
| UChar32 cp = ch; |
| |
| //UChar *entryPos = source->pos; |
| for (;;) { |
| // This loop will repeat only in the case of contractions, and only when a contraction |
| // is found and the first CE resulting from that contraction is itself a special |
| // (an expansion, for example.) All other special CE types are fully handled the |
| // first time through, and the loop exits. |
| |
| const uint32_t *CEOffset = NULL; |
| switch(getCETag(CE)) { |
| case NOT_FOUND_TAG: |
| /* This one is not found, and we'll let somebody else bother about it... no more games */ |
| return CE; |
| case SURROGATE_TAG: |
| /* we encountered a leading surrogate. We shall get the CE by using the following code unit */ |
| /* two things can happen here: next code point can be a trailing surrogate - we will use it */ |
| /* to retrieve the CE, or it is not a trailing surrogate (or the string is done). In that case */ |
| /* we return 0 (completely ignorable - per UCA specification */ |
| { |
| UChar trail; |
| collIterateState state; |
| backupState(source, &state); |
| if (collIter_eos(source) || !(UTF16_IS_TRAIL((trail = getNextNormalizedChar(source))))) { |
| // we chould have stepped one char forward and it might have turned that it |
| // was not a trail surrogate. In that case, we have to backup. |
| loadState(source, &state, TRUE); |
| return 0; |
| } else { |
| CE = ucmpe32_getSurrogate(coll->mapping, CE, trail); |
| if(CE == UCOL_NOT_FOUND) { // there are tailored surrogates in this block, but not this one. |
| // We need to backup |
| loadState(source, &state, TRUE); |
| return CE; |
| } |
| // calculate the supplementary code point value, if surrogate was not tailored |
| cp = ((((uint32_t)ch)<<10UL)+(trail)-(((uint32_t)0xd800<<10UL)+0xdc00-0x10000)); |
| } |
| } |
| break; |
| case THAI_TAG: |
| /* Thai/Lao reordering */ |
| if (((source->flags) & UCOL_ITER_INNORMBUF) || /* Already Swapped || */ |
| source->endp == source->pos || /* At end of string. No swap possible || */ |
| UCOL_ISTHAIBASECONSONANT(*(source->pos)) == 0) /* next char not Thai base cons. */ |
| { |
| // Treat Thai as a length one expansion */ |
| CEOffset = (uint32_t *)coll->image+getExpansionOffset(CE); /* find the offset to expansion table */ |
| CE = *CEOffset++; |
| } |
| else |
| { |
| // Move the prevowel and the following base Consonant into the normalization buffer |
| // with their order swapped |
| source->writableBuffer[0] = *source->pos; |
| source->writableBuffer[1] = *(source->pos - 1); |
| source->writableBuffer[2] = 0; |
| |
| source->fcdPosition = source->pos+1; // Indicate where to continue in main input string |
| // after exhausting the writableBuffer |
| source->pos = source->writableBuffer; |
| source->origFlags = source->flags; |
| source->flags |= UCOL_ITER_INNORMBUF; |
| source->flags &= ~(UCOL_ITER_NORM | UCOL_ITER_HASLEN); |
| |
| CE = UCOL_IGNORABLE; |
| } |
| break; |
| case SPEC_PROC_TAG: |
| { |
| // Special processing is getting a CE that is preceded by a certain prefix |
| // Currently this is only needed for optimizing Japanese length and iteration marks. |
| // When we encouter a special processing tag, we go backwards and try to see if |
| // we have a match. |
| // Contraction tables are used - so the whole process is not unlike contraction. |
| // prefix data is stored backwards in the table. |
| const UChar *UCharOffset; |
| UChar schar, tchar; |
| //UChar32 normOutput = 0; |
| collIterateState prefixState; |
| backupState(source, &prefixState); |
| loadState(source, &entryState, TRUE); |
| source->pos--; |
| |
| //UChar *sourcePointer = --entryPos; //source->pos; // We want to look at the point where we entered - actually one |
| // before that... |
| |
| for(;;) { |
| // This loop will run once per source string character, for as long as we |
| // are matching a potential contraction sequence |
| |
| // First we position ourselves at the begining of contraction sequence |
| const UChar *ContractionStart = UCharOffset = (UChar *)coll->image+getContractOffset(CE); |
| if (source->pos == source->string || |
| ((source->flags & UCOL_ITER_INNORMBUF) && |
| *(source->pos - 1) == 0 && source->fcdPosition == NULL)) { |
| // if(sourcePointer == source->string) { |
| CE = *(coll->contractionCEs + (UCharOffset - coll->contractionIndex)); |
| break; |
| } |
| schar = getPrevNormalizedChar(source); |
| source->pos--; |
| //schar = *(--sourcePointer); |
| |
| while(schar > (tchar = *UCharOffset)) { /* since the contraction codepoints should be ordered, we skip all that are smaller */ |
| UCharOffset++; |
| } |
| |
| if (schar == tchar) { |
| // Found the source string char in the table. |
| // Pick up the corresponding CE from the table. |
| CE = *(coll->contractionCEs + |
| (UCharOffset - coll->contractionIndex)); |
| } |
| else |
| { |
| // Source string char was not in the table. |
| // We have not found the prefix. |
| CE = *(coll->contractionCEs + |
| (ContractionStart - coll->contractionIndex)); |
| } |
| |
| if(!isPrefix(CE)) { |
| // The source string char was in the contraction table, and the corresponding |
| // CE is not a prefix CE. We found the prefix, break |
| // out of loop, this CE will end up being returned. This is the normal |
| // way out of prefix handling when the source actually contained |
| // the prefix. |
| break; |
| } |
| } |
| if(CE != UCOL_NOT_FOUND) { // we found something and we can merilly continue |
| loadState(source, &prefixState, TRUE); |
| } else { // prefix search was a failure, we have to backup all the way to the start |
| loadState(source, &entryState, TRUE); |
| } |
| break; |
| } |
| case CONTRACTION_TAG: |
| { |
| /* This should handle contractions */ |
| collIterateState state; |
| backupState(source, &state); |
| uint32_t firstCE = UCOL_NOT_FOUND; |
| const UChar *UCharOffset; |
| UChar schar, tchar; |
| |
| for (;;) { |
| /* This loop will run once per source string character, for as long as we */ |
| /* are matching a potential contraction sequence */ |
| |
| /* First we position ourselves at the begining of contraction sequence */ |
| const UChar *ContractionStart = UCharOffset = (UChar *)coll->image+getContractOffset(CE); |
| |
| if (collIter_eos(source)) { |
| // Ran off the end of the source string. |
| CE = *(coll->contractionCEs + (UCharOffset - coll->contractionIndex)); |
| // So we'll pick whatever we have at the point... |
| if (CE == UCOL_NOT_FOUND) { |
| // back up the source over all the chars we scanned going into this contraction. |
| CE = firstCE; |
| loadState(source, &state, TRUE); |
| } |
| break; |
| } |
| |
| uint8_t maxCC = (uint8_t)(*(UCharOffset)&0xFF); /*get the discontiguos stuff */ /* skip the backward offset, see above */ |
| uint8_t allSame = (uint8_t)(*(UCharOffset++)>>8); |
| |
| schar = getNextNormalizedChar(source); |
| while(schar > (tchar = *UCharOffset)) { /* since the contraction codepoints should be ordered, we skip all that are smaller */ |
| UCharOffset++; |
| } |
| |
| if (schar == tchar) { |
| // Found the source string char in the contraction table. |
| // Pick up the corresponding CE from the table. |
| CE = *(coll->contractionCEs + |
| (UCharOffset - coll->contractionIndex)); |
| } |
| else |
| { |
| // Source string char was not in contraction table. |
| // Unless we have a discontiguous contraction, we have finished |
| // with this contraction. |
| uint8_t sCC; |
| if (schar < 0x300 || |
| maxCC == 0 || |
| (sCC = i_getCombiningClass(schar, coll)) == 0 || |
| sCC>maxCC || |
| (allSame != 0 && sCC == maxCC) || |
| collIter_eos(source)) { |
| // Contraction can not be discontiguous. |
| source->pos --; // back up the source string pointer by one, |
| // because the character we just looked at was |
| // not part of the contraction. */ |
| CE = *(coll->contractionCEs + |
| (ContractionStart - coll->contractionIndex)); |
| } else { |
| // |
| // Contraction is possibly discontiguous. |
| // Scan more of source string looking for a match |
| // |
| UChar tempchar; |
| /* find the next character if schar is not a base character |
| and we are not yet at the end of the string */ |
| tempchar = getNextNormalizedChar(source); |
| source->pos --; |
| if (i_getCombiningClass(tempchar, coll) == 0) { |
| source->pos --; |
| /* Spit out the last char of the string, wasn't tasty enough */ |
| CE = *(coll->contractionCEs + |
| (ContractionStart - coll->contractionIndex)); |
| } else { |
| CE = getDiscontiguous(coll, source, ContractionStart); |
| } |
| } |
| } |
| |
| if(CE == UCOL_NOT_FOUND) { |
| /* The Source string did not match the contraction that we were checking. */ |
| /* Back up the source position to undo the effects of having partially */ |
| /* scanned through what ultimately proved to not be a contraction. */ |
| loadState(source, &state, TRUE); |
| CE = firstCE; |
| break; |
| } |
| |
| if(!isContraction(CE)) { |
| // The source string char was in the contraction table, and the corresponding |
| // CE is not a contraction CE. We completed the contraction, break |
| // out of loop, this CE will end up being returned. This is the normal |
| // way out of contraction handling when the source actually contained |
| // the contraction. |
| break; |
| } |
| |
| |
| // The source string char was in the contraction table, and the corresponding |
| // CE is IS a contraction CE. We will continue looping to check the source |
| // string for the remaining chars in the contraction. |
| uint32_t tempCE = *(coll->contractionCEs + (ContractionStart - coll->contractionIndex)); |
| if(tempCE != UCOL_NOT_FOUND) { |
| // We have scanned a a section of source string for which there is a |
| // CE from the contraction table. Remember the CE and scan position, so |
| // that we can return to this point if further scanning fails to |
| // match a longer contraction sequence. |
| firstCE = tempCE; |
| backupState(source, &state); |
| state.pos --; |
| } |
| } |
| break; |
| } |
| case EXPANSION_TAG: |
| { |
| /* This should handle expansion. */ |
| /* NOTE: we can encounter both continuations and expansions in an expansion! */ |
| /* I have to decide where continuations are going to be dealt with */ |
| uint32_t size; |
| uint32_t i; /* general counter */ |
| CEOffset = (uint32_t *)coll->image+getExpansionOffset(CE); /* find the offset to expansion table */ |
| size = getExpansionCount(CE); |
| CE = *CEOffset++; |
| if(size != 0) { /* if there are less than 16 elements in expansion, we don't terminate */ |
| for(i = 1; i<size; i++) { |
| *(source->CEpos++) = *CEOffset++; |
| } |
| } else { /* else, we do */ |
| while(*CEOffset != 0) { |
| *(source->CEpos++) = *CEOffset++; |
| } |
| } |
| return CE; |
| } |
| /* various implicits optimization */ |
| case CJK_IMPLICIT_TAG: /* 0x3400-0x4DB5, 0x4E00-0x9FA5, 0xF900-0xFA2D*/ |
| return getImplicit(cp, source, 0x04000000); |
| case IMPLICIT_TAG: /* everything that is not defined otherwise */ |
| /* UCA is filled with these. Tailorings are NOT_FOUND */ |
| return getImplicit(cp, source, 0); |
| case TRAIL_SURROGATE_TAG: /* DC00-DFFF*/ |
| return 0; /* broken surrogate sequence */ |
| case LEAD_SURROGATE_TAG: /* D800-DBFF*/ |
| UChar nextChar; |
| if( (((source->flags & UCOL_ITER_HASLEN) == 0 ) || (source->pos<source->endp)) && |
| UTF_IS_SECOND_SURROGATE((nextChar=*source->pos))) { |
| cp = ((((uint32_t)ch)<<10UL)+(nextChar)-(((uint32_t)0xd800<<10UL)+0xdc00-0x10000)); |
| source->pos++; |
| if((cp >= 0x20000 && cp <= 0x2a6d6) || |
| (cp >= 0x2F800 && cp <= 0x2FA1D)) { // this might be a CJK supplementary cp |
| return getImplicit(cp, source, 0x04000000); |
| } else { // or a regular one |
| return getImplicit(cp, source, 0); |
| } |
| } else { |
| return 0; /* completely ignorable */ |
| } |
| case HANGUL_SYLLABLE_TAG: /* AC00-D7AF*/ |
| { |
| const uint32_t |
| SBase = 0xAC00, LBase = 0x1100, VBase = 0x1161, TBase = 0x11A7; |
| //const uint32_t LCount = 19; |
| const uint32_t VCount = 21; |
| const uint32_t TCount = 28; |
| //const uint32_t NCount = VCount * TCount; // 588 |
| //const uint32_t SCount = LCount * NCount; // 11172 |
| uint32_t L = ch - SBase; |
| |
| // divide into pieces |
| |
| uint32_t T = L % TCount; // we do it in this order since some compilers can do % and / in one operation |
| L /= TCount; |
| uint32_t V = L % VCount; |
| L /= VCount; |
| |
| // offset them |
| |
| L += LBase; |
| V += VBase; |
| T += TBase; |
| |
| // return the first CE, but first put the rest into the expansion buffer |
| if (!source->coll->image->jamoSpecial) { // FAST PATH |
| |
| *(source->CEpos++) = ucmpe32_get(UCA->mapping, V); |
| if (T != TBase) { |
| *(source->CEpos++) = ucmpe32_get(UCA->mapping, T); |
| } |
| |
| return ucmpe32_get(UCA->mapping, L); // return first one |
| |
| } else { // Jamo is Special |
| // Since Hanguls pass the FCD check, it is |
| // guaranteed that we won't be in |
| // the normalization buffer if something like this happens |
| // Move Jamos into normalization buffer |
| source->writableBuffer[0] = (UChar)L; |
| source->writableBuffer[1] = (UChar)V; |
| if (T != TBase) { |
| source->writableBuffer[2] = (UChar)T; |
| source->writableBuffer[3] = 0; |
| } else { |
| source->writableBuffer[2] = 0; |
| } |
| |
| source->fcdPosition = source->pos; // Indicate where to continue in main input string |
| // after exhausting the writableBuffer |
| source->pos = source->writableBuffer; |
| source->origFlags = source->flags; |
| source->flags |= UCOL_ITER_INNORMBUF; |
| source->flags &= ~(UCOL_ITER_NORM | UCOL_ITER_HASLEN); |
| |
| return(UCOL_IGNORABLE); |
| } |
| } |
| case CHARSET_TAG: |
| /* not yet implemented */ |
| /* probably after 1.8 */ |
| return UCOL_NOT_FOUND; |
| default: |
| *status = U_INTERNAL_PROGRAM_ERROR; |
| CE=0; |
| break; |
| } |
| if (CE <= UCOL_NOT_FOUND) break; |
| } |
| return CE; |
| } |
| |
| /** |
| * Inserts the argument character into the front of the buffer replacing the |
| * front null terminator. |
| * @param data collation element iterator data |
| * @param pNull pointer to the null terminator |
| * @param ch character to be appended |
| * @return positon of added character |
| */ |
| static |
| inline UChar * insertBufferFront(collIterate *data, UChar *pNull, UChar ch) |
| { |
| uint32_t size = data->writableBufSize; |
| UChar *end; |
| UChar *newbuffer; |
| const uint32_t incsize = 5; |
| |
| if (pNull > data->writableBuffer + 1) { |
| *pNull = ch; |
| *(pNull - 1) = 0; |
| return pNull; |
| } |
| |
| /* |
| buffer will always be null terminated infront. |
| giving extra space since it is likely that more characters will be added. |
| */ |
| size += incsize; |
| newbuffer = (UChar *)uprv_malloc(sizeof(UChar) * size); |
| end = newbuffer + incsize; |
| uprv_memcpy(end, data->writableBuffer, |
| data->writableBufSize * sizeof(UChar)); |
| *end = ch; |
| *(end - 1) = 0; |
| |
| freeHeapWritableBuffer(data); |
| |
| data->writableBufSize = size; |
| data->writableBuffer = newbuffer; |
| return end; |
| } |
| |
| /** |
| * Special normalization function for contraction in the previous iterator. |
| * This normalization sequence will place the current character at source->pos |
| * and its following normalized sequence into the buffer. |
| * The fcd position, pos will be changed. |
| * pos will now point to positions in the buffer. |
| * Flags will be changed accordingly. |
| * @param data collation iterator data |
| */ |
| static |
| inline void normalizePrevContraction(collIterate *data) |
| { |
| UChar *buffer = data->writableBuffer; |
| uint32_t buffersize = data->writableBufSize; |
| uint32_t nulltermsize; |
| UErrorCode status = U_ZERO_ERROR; |
| UChar *pEnd = data->pos + 1; /* End normalize + 1 */ |
| UChar *pStart; |
| uint32_t normLen; |
| UChar *pStartNorm; |
| |
| if (data->flags & UCOL_ITER_HASLEN) { |
| /* |
| normalization buffer not used yet, we'll pull down the next |
| character into the end of the buffer |
| */ |
| *(buffer + (buffersize - 1)) = *(data->pos + 1); |
| nulltermsize = buffersize - 1; |
| } |
| else { |
| nulltermsize = buffersize; |
| UChar *temp = buffer + (nulltermsize - 1); |
| while (*(temp --) != 0) { |
| nulltermsize --; |
| } |
| } |
| |
| /* Start normalize */ |
| if (data->fcdPosition == NULL) { |
| pStart = data->string; |
| } |
| else { |
| pStart = data->fcdPosition + 1; |
| } |
| |
| normLen = unorm_normalize(pStart, pEnd - pStart, UNORM_NFD, 0, buffer, 0, |
| &status); |
| |
| if (nulltermsize <= normLen) { |
| uint32_t size = buffersize - nulltermsize + normLen + 1; |
| UChar *temp = (UChar *)uprv_malloc(size * sizeof(UChar)); |
| nulltermsize = normLen + 1; |
| uprv_memcpy(temp + normLen, buffer, |
| sizeof(UChar) * (buffersize - nulltermsize)); |
| freeHeapWritableBuffer(data); |
| data->writableBuffer = temp; |
| data->writableBufSize = size; |
| } |
| |
| status = U_ZERO_ERROR; |
| /* |
| this puts the null termination infront of the normalized string instead |
| of the end |
| */ |
| pStartNorm = buffer + (nulltermsize - normLen); |
| *(pStartNorm - 1) = 0; |
| unorm_normalize(pStart, pEnd - pStart, UNORM_NFD, 0, pStartNorm, normLen, |
| &status); |
| |
| data->pos = data->writableBuffer + nulltermsize; |
| data->origFlags = data->flags; |
| data->flags |= UCOL_ITER_INNORMBUF; |
| data->flags &= ~(UCOL_ITER_NORM | UCOL_ITER_HASLEN); |
| } |
| |
| /** |
| * Contraction character management function that returns the previous character |
| * for the backwards iterator. |
| * Does nothing if the previous character is in buffer and not the first |
| * character in it. |
| * Else it checks previous character in data string to see if it is |
| * normalizable. |
| * If it is not, the character is simply copied into the buffer, else |
| * the whole normalized substring is copied into the buffer, including the |
| * current character. |
| * @param data collation element iterator data |
| * @return previous character |
| */ |
| static |
| inline UChar getPrevNormalizedChar(collIterate *data) |
| { |
| UChar prevch; |
| UChar ch; |
| UChar *start; |
| UBool innormbuf = (UBool)(data->flags & UCOL_ITER_INNORMBUF); |
| UChar *pNull = NULL; |
| if ((data->flags & (UCOL_ITER_NORM | UCOL_ITER_INNORMBUF)) == 0 || |
| (innormbuf && *(data->pos - 1) != 0)) { |
| /* |
| if no normalization. |
| if previous character is in normalized buffer, no further normalization |
| is required |
| */ |
| return *(data->pos - 1); |
| } |
| |
| start = data->pos; |
| if (data->flags & UCOL_ITER_HASLEN) { |
| /* in data string */ |
| if ((start - 1) == data->string) { |
| return *(start - 1); |
| } |
| start --; |
| ch = *start; |
| prevch = *(start - 1); |
| } |
| else { |
| /* |
| in writable buffer, at this point fcdPosition can not be NULL. |
| see contracting tag. |
| */ |
| if (data->fcdPosition == data->string) { |
| /* at the start of the string, just dump it into the normalizer */ |
| insertBufferFront(data, data->pos - 1, *(data->fcdPosition)); |
| data->fcdPosition = NULL; |
| return *(data->pos - 1); |
| } |
| pNull = data->pos - 1; |
| start = data->fcdPosition; |
| ch = *start; |
| prevch = *(start - 1); |
| } |
| /* |
| * if the current character is not fcd. |
| * Trailing combining class == 0. |
| */ |
| if (data->fcdPosition > start && |
| (ch >= NFC_ZERO_CC_BLOCK_LIMIT_ || prevch >= NFC_ZERO_CC_BLOCK_LIMIT_)) |
| { |
| /* |
| Need a more complete FCD check and possible normalization. |
| normalize substring will be appended to buffer |
| */ |
| UChar *backuppos = data->pos; |
| data->pos = start; |
| if (collPrevIterFCD(data)) { |
| normalizePrevContraction(data); |
| return *(data->pos - 1); |
| } |
| data->pos = backuppos; |
| data->fcdPosition ++; |
| } |
| |
| if (innormbuf) { |
| /* |
| no normalization is to be done hence only one character will be |
| appended to the buffer. |
| */ |
| insertBufferFront(data, pNull, ch); |
| data->fcdPosition --; |
| } |
| |
| return ch; |
| } |
| |
| static |
| inline uint32_t getPrevImplicit(UChar32 cp, collIterate *collationSource, uint32_t hanFixup) { |
| if ((cp & 0xFFFE) == 0xFFFE || (0xD800 <= cp && cp <= 0xDC00)) { |
| return 0; /* illegal code value, use completely ignoreable! */ |
| } |
| /* we must skip all 00, 01, 02 bytes, so most bytes have 253 values |
| we must leave a gap of 01 between all values of the last byte, so the last byte has 126 values (3 byte case) |
| we shift so that HAN all has the same first primary, for compression. |
| for the 4 byte case, we make the gap as large as we can fit. |
| Three byte forms are EC xx xx, ED xx xx, EE xx xx (with a gap of 1) |
| Four byte forms (most supplementaries) are EF xx xx xx (with a gap of LAST2_MULTIPLIER == 14) |
| */ |
| int32_t last0 = cp - IMPLICIT_BOUNDARY_; |
| uint32_t r = 0; |
| |
| if (last0 < 0) { |
| cp += IMPLICIT_HAN_SHIFT_; // shift so HAN shares single block |
| int32_t last1 = cp / IMPLICIT_LAST_COUNT_; |
| last0 = cp % IMPLICIT_LAST_COUNT_; |
| int32_t last2 = last1 / IMPLICIT_OTHER_COUNT_; |
| last1 %= IMPLICIT_OTHER_COUNT_; |
| r = 0xEC030300 - hanFixup + (last2 << 24) + (last1 << 16) + (last0 << 9); |
| } else { |
| int32_t last1 = last0 / IMPLICIT_LAST_COUNT2_; |
| last0 %= IMPLICIT_LAST_COUNT2_; |
| int32_t last2 = last1 / IMPLICIT_OTHER_COUNT_; |
| last1 %= IMPLICIT_OTHER_COUNT_; |
| r = 0xEF030303 - hanFixup + (last2 << 16) + (last1 << 8) + |
| (last0 * IMPLICIT_LAST2_MULTIPLIER_); |
| } |
| *(collationSource->CEpos++) = (r & UCOL_PRIMARYMASK) | 0x00000505; |
| collationSource->toReturn = collationSource->CEpos; |
| return ((r & 0x0000FFFF)<<16) | 0x000000C0; |
| } |
| |
| /** |
| * This function handles the special CEs like contractions, expansions, |
| * surrogates, Thai. |
| * It is called by both getPrevCE |
| */ |
| uint32_t ucol_prv_getSpecialPrevCE(const UCollator *coll, UChar ch, uint32_t CE, |
| collIterate *source, |
| UErrorCode *status) |
| { |
| const uint32_t *CEOffset = NULL; |
| UChar *UCharOffset = NULL; |
| UChar schar; |
| const UChar *constart = NULL; |
| uint32_t size; |
| UChar buffer[UCOL_MAX_BUFFER]; |
| uint32_t *endCEBuffer; |
| UChar *strbuffer; |
| |
| for(;;) |
| { |
| /* the only ces that loops are thai and contractions */ |
| switch (getCETag(CE)) |
| { |
| case NOT_FOUND_TAG: /* this tag always returns */ |
| return CE; |
| case SURROGATE_TAG: /* This is a surrogate pair */ |
| /* essentialy an engaged lead surrogate. */ |
| /* if you have encountered it here, it means that a */ |
| /* broken sequence was encountered and this is an error */ |
| return 0; |
| case THAI_TAG: |
| if ((source->flags & UCOL_ITER_INNORMBUF) || /* Already Swapped || */ |
| source->string == source->pos || /* At start of string.|| */ |
| /* previous char not Thai prevowel */ |
| UCOL_ISTHAIBASECONSONANT(*(source->pos)) == FALSE || |
| UCOL_ISTHAIPREVOWEL(*(source->pos - 1)) == FALSE) |
| { |
| /* Treat Thai as a length one expansion */ |
| /* find the offset to expansion table */ |
| CEOffset = (uint32_t *)coll->image+getExpansionOffset(CE); |
| CE = *CEOffset ++; |
| } |
| else |
| { |
| /* |
| Move the prevowel and the following base Consonant into the |
| normalization buffer with their order swapped |
| */ |
| UChar *tempbuffer = source->writableBuffer + |
| (source->writableBufSize - 1); |
| *(tempbuffer - 2) = 0; |
| *(tempbuffer - 1) = *source->pos; |
| *(tempbuffer) = *(source->pos - 1); |
| |
| /* |
| Indicate where to continue in main input string after exhausting |
| the writableBuffer |
| */ |
| if (source->pos - 1 == source->string) { |
| source->fcdPosition = NULL; |
| } else { |
| source->fcdPosition = source->pos-2; |
| } |
| |
| source->pos = tempbuffer; |
| source->origFlags = source->flags; |
| source->flags |= UCOL_ITER_INNORMBUF; |
| source->flags &= ~(UCOL_ITER_NORM | UCOL_ITER_HASLEN); |
| |
| //CE = UCOL_IGNORABLE; |
| return(UCOL_IGNORABLE); |
| } |
| break; |
| case SPEC_PROC_TAG: |
| { |
| // Special processing is getting a CE that is preceded by a certain prefix |
| // Currently this is only needed for optimizing Japanese length and iteration marks. |
| // When we encouter a special processing tag, we go backwards and try to see if |
| // we have a match. |
| // Contraction tables are used - so the whole process is not unlike contraction. |
| // prefix data is stored backwards in the table. |
| const UChar *UCharOffset; |
| UChar schar, tchar; |
| collIterateState prefixState; |
| backupState(source, &prefixState); |
| //UChar *sourcePointer = source->pos; |
| //UChar32 normOutput = 0; |
| for(;;) { |
| // This loop will run once per source string character, for as long as we |
| // are matching a potential contraction sequence |
| |
| // First we position ourselves at the begining of contraction sequence |
| const UChar *ContractionStart = UCharOffset = (UChar *)coll->image+getContractOffset(CE); |
| |
| if (source->pos == source->string || |
| ((source->flags & UCOL_ITER_INNORMBUF) && |
| *(source->pos - 1) == 0 && source->fcdPosition == NULL)) { |
| //if(sourcePointer == source->string) { |
| CE = *(coll->contractionCEs + (UCharOffset - coll->contractionIndex)); |
| break; |
| } |
| schar = getPrevNormalizedChar(source); |
| source->pos--; |
| //schar = *(--sourcePointer); |
| |
| while(schar > (tchar = *UCharOffset)) { /* since the contraction codepoints should be ordered, we skip all that are smaller */ |
| UCharOffset++; |
| } |
| |
| if (schar == tchar) { |
| // Found the source string char in the table. |
| // Pick up the corresponding CE from the table. |
| CE = *(coll->contractionCEs + |
| (UCharOffset - coll->contractionIndex)); |
| } |
| else |
| { |
| // Source string char was not in the table. |
| // We have not found the prefix. |
| CE = *(coll->contractionCEs + |
| (ContractionStart - coll->contractionIndex)); |
| } |
| |
| if(!isPrefix(CE)) { |
| // The source string char was in the contraction table, and the corresponding |
| // CE is not a prefix CE. We found the prefix, break |
| // out of loop, this CE will end up being returned. This is the normal |
| // way out of prefix handling when the source actually contained |
| // the prefix. |
| break; |
| } |
| } |
| loadState(source, &prefixState, TRUE); |
| break; |
| } |
| |
| case CONTRACTION_TAG: |
| /* to ensure that the backwards and forwards iteration matches, we |
| take the current region of most possible match and pass it through |
| the forward iteration. this will ensure that the obstinate problem of |
| overlapping contractions will not occur. |
| */ |
| schar = *(source->pos); |
| constart = (UChar *)coll->image + getContractOffset(CE); |
| if (isAtStartPrevIterate(source) |
| /* commented away contraction end checks after adding the checks |
| in getPrevCE */) { |
| /* start of string or this is not the end of any contraction */ |
| CE = *(coll->contractionCEs + |
| (constart - coll->contractionIndex)); |
| break; |
| } |
| strbuffer = buffer; |
| UCharOffset = strbuffer + (UCOL_MAX_BUFFER - 1); |
| *(UCharOffset --) = 0; |
| while (ucol_unsafeCP(schar, coll)) { |
| *(UCharOffset) = schar; |
| UCharOffset --; |
| schar = getPrevNormalizedChar(source); |
| source->pos --; |
| if (UCharOffset + 1 == buffer) { |
| /* we have exhausted the buffer */ |
| int32_t newsize = source->pos - source->string + 1; |
| strbuffer = (UChar *)uprv_malloc(sizeof(UChar) * |
| (newsize + UCOL_MAX_BUFFER)); |
| UCharOffset = strbuffer + newsize; |
| uprv_memcpy(UCharOffset, buffer, |
| UCOL_MAX_BUFFER * sizeof(UChar)); |
| UCharOffset --; |
| } |
| if (source->pos == source->string || |
| ((source->flags & UCOL_ITER_INNORMBUF) && |
| *(source->pos - 1) == 0 && source->fcdPosition == NULL)) { |
| break; |
| } |
| } |
| /* adds the initial base character to the string */ |
| *(UCharOffset) = schar; |
| |
| /* a new collIterate is used to simply things, since using the current |
| collIterate will mean that the forward and backwards iteration will |
| share and change the same buffers. we don't want to get into that. */ |
| collIterate temp; |
| IInit_collIterate(coll, UCharOffset, -1, &temp); |
| temp.flags &= ~UCOL_ITER_NORM; |
| |
| CE = ucol_IGetNextCE(coll, &temp, status); |
| endCEBuffer = source->CEs + UCOL_EXPAND_CE_BUFFER_SIZE; |
| while (CE != UCOL_NO_MORE_CES) { |
| *(source->CEpos ++) = CE; |
| if (source->CEpos == endCEBuffer) { |
| /* ran out of CE space, bail. |
| there's no guarantee of the right character position after |
| this bail*/ |
| *status = U_BUFFER_OVERFLOW_ERROR; |
| source->CEpos = source->CEs; |
| freeHeapWritableBuffer(&temp); |
| if (strbuffer != buffer) { |
| uprv_free(strbuffer); |
| } |
| return UCOL_NULLORDER; |
| } |
| CE = ucol_IGetNextCE(coll, &temp, status); |
| } |
| freeHeapWritableBuffer(&temp); |
| if (strbuffer != buffer) { |
| uprv_free(strbuffer); |
| } |
| source->toReturn = source->CEpos - 1; |
| if (source->toReturn == source->CEs) { |
| source->CEpos = source->CEs; |
| } |
| return *(source->toReturn); |
| case EXPANSION_TAG: /* this tag always returns */ |
| /* |
| This should handle expansion. |
| NOTE: we can encounter both continuations and expansions in an expansion! |
| I have to decide where continuations are going to be dealt with |
| */ |
| /* find the offset to expansion table */ |
| CEOffset = (uint32_t *)coll->image + getExpansionOffset(CE); |
| size = getExpansionCount(CE); |
| if (size != 0) { |
| /* |
| if there are less than 16 elements in expansion, we don't terminate |
| */ |
| uint32_t count; |
| for (count = 0; count < size; count++) { |
| *(source->CEpos ++) = *CEOffset++; |
| } |
| } |
| else { |
| /* else, we do */ |
| while (*CEOffset != 0) { |
| *(source->CEpos ++) = *CEOffset ++; |
| } |
| } |
| source->toReturn = source->CEpos - 1; |
| return *(source->toReturn); |
| case HANGUL_SYLLABLE_TAG: /* AC00-D7AF*/ |
| { |
| const uint32_t |
| SBase = 0xAC00, LBase = 0x1100, VBase = 0x1161, TBase = 0x11A7; |
| //const uint32_t LCount = 19; |
| const uint32_t VCount = 21; |
| const uint32_t TCount = 28; |
| //const uint32_t NCount = VCount * TCount; /* 588 */ |
| //const uint32_t SCount = LCount * NCount; /* 11172 */ |
| |
| uint32_t L = ch - SBase; |
| /* |
| divide into pieces. |
| we do it in this order since some compilers can do % and / in one |
| operation |
| */ |
| uint32_t T = L % TCount; |
| L /= TCount; |
| uint32_t V = L % VCount; |
| L /= VCount; |
| |
| /* offset them */ |
| L += LBase; |
| V += VBase; |
| T += TBase; |
| |
| /* |
| return the first CE, but first put the rest into the expansion buffer |
| */ |
| if (!source->coll->image->jamoSpecial) |
| { |
| *(source->CEpos ++) = ucmpe32_get(UCA->mapping, L); |
| *(source->CEpos ++) = ucmpe32_get(UCA->mapping, V); |
| if (T != TBase) |
| *(source->CEpos ++) = ucmpe32_get(UCA->mapping, T); |
| |
| source->toReturn = source->CEpos - 1; |
| return *(source->toReturn); |
| } else { |
| // Since Hanguls pass the FCD check, it is |
| // guaranteed that we won't be in |
| // the normalization buffer if something like this happens |
| // Move Jamos into normalization buffer |
| /* |
| Move the Jamos into the |
| normalization buffer |
| */ |
| UChar *tempbuffer = source->writableBuffer + |
| (source->writableBufSize - 1); |
| *(tempbuffer) = 0; |
| if (T != TBase) { |
| *(tempbuffer - 1) = (UChar)T; |
| *(tempbuffer - 2) = (UChar)V; |
| *(tempbuffer - 3) = (UChar)L; |
| *(tempbuffer - 4) = 0; |
| } else { |
| *(tempbuffer - 1) = (UChar)V; |
| *(tempbuffer - 2) = (UChar)L; |
| *(tempbuffer - 3) = 0; |
| } |
| |
| /* |
| Indicate where to continue in main input string after exhausting |
| the writableBuffer |
| */ |
| if (source->pos == source->string) { |
| source->fcdPosition = NULL; |
| } else { |
| source->fcdPosition = source->pos-1; |
| } |
| |
| source->pos = tempbuffer; |
| source->origFlags = source->flags; |
| source->flags |= UCOL_ITER_INNORMBUF; |
| source->flags &= ~(UCOL_ITER_NORM | UCOL_ITER_HASLEN); |
| |
| return(UCOL_IGNORABLE); |
| } |
| } |
| case LEAD_SURROGATE_TAG: /* D800-DBFF*/ |
| return 0; /* broken surrogate sequence */ |
| case TRAIL_SURROGATE_TAG: /* DC00-DFFF*/ |
| { |
| UChar32 cp = 0; |
| UChar prevChar; |
| UChar *prev; |
| if (isAtStartPrevIterate(source)) { |
| /* we are at the start of the string, wrong place to be at */ |
| return 0; |
| } |
| if (source->pos != source->writableBuffer) { |
| prev = source->pos - 1; |
| } else { |
| prev = source->fcdPosition; |
| } |
| prevChar = *prev; |
| |
| /* Handles Han and Supplementary characters here.*/ |
| if (UTF_IS_FIRST_SURROGATE(prevChar)) { |
| cp = ((((uint32_t)prevChar)<<10UL)+(ch)-(((uint32_t)0xd800<<10UL)+0xdc00-0x10000)); |
| source->pos = prev; |
| } else { |
| return 0; /* completely ignorable */ |
| } |
| return getPrevImplicit(cp, source, 0); |
| } |
| case CJK_IMPLICIT_TAG: /* 0x3400-0x4DB5, 0x4E00-0x9FA5, 0xF900-0xFA2D*/ |
| return getPrevImplicit(ch, source, 0x04000000); |
| case IMPLICIT_TAG: /* everything that is not defined otherwise */ |
| return getPrevImplicit(ch, source, 0); |
| /* UCA is filled with these. Tailorings are NOT_FOUND */ |
| /* not yet implemented */ |
| case CHARSET_TAG: /* this tag always returns */ |
| /* probably after 1.8 */ |
| return UCOL_NOT_FOUND; |
| default: /* this tag always returns */ |
| *status = U_INTERNAL_PROGRAM_ERROR; |
| CE=0; |
| break; |
| } |
| if (CE <= UCOL_NOT_FOUND) { |
| break; |
| } |
| } |
| return CE; |
| } |
| |
| /* This should really be a macro */ |
| /* However, it is used only when stack buffers are not sufficiently big, and then we're messed up performance wise */ |
| /* anyway */ |
| static |
| uint8_t *reallocateBuffer(uint8_t **secondaries, uint8_t *secStart, uint8_t *second, uint32_t *secSize, uint32_t newSize, UErrorCode *status) { |
| #ifdef UCOL_DEBUG |
| fprintf(stderr, "."); |
| #endif |
| uint8_t *newStart = NULL; |
| |
| if(secStart==second) { |
| newStart=(uint8_t*)uprv_malloc(newSize); |
| if(newStart==NULL) { |
| *status = U_MEMORY_ALLOCATION_ERROR; |
| return NULL; |
| } |
| uprv_memcpy(newStart, secStart, *secondaries-secStart); |
| } else { |
| newStart=(uint8_t*)uprv_realloc(secStart, newSize); |
| if(newStart==NULL) { |
| *status = U_MEMORY_ALLOCATION_ERROR; |
| return NULL; |
| } |
| } |
| *secondaries=newStart+(*secondaries-secStart); |
| *secSize=newSize; |
| return newStart; |
| } |
| |
| |
| /* This should really be a macro */ |
| /* This function is used to reverse parts of a buffer. We need this operation when doing continuation */ |
| /* secondaries in French */ |
| /* |
| void uprv_ucol_reverse_buffer(uint8_t *start, uint8_t *end) { |
| uint8_t temp; |
| while(start<end) { |
| temp = *start; |
| *start++ = *end; |
| *end-- = temp; |
| } |
| } |
| */ |
| |
| #define uprv_ucol_reverse_buffer(TYPE, start, end) { \ |
| TYPE tempA; \ |
| while((start)<(end)) { \ |
| tempA = *(start); \ |
| *(start)++ = *(end); \ |
| *(end)-- = tempA; \ |
| } \ |
| } |
| |
| /****************************************************************************/ |
| /* Following are the sortkey generation functions */ |
| /* */ |
| /****************************************************************************/ |
| |
| /** |
| * Merge two sort keys. |
| * This is useful, for example, to combine sort keys from first and last names |
| * to sort such pairs. |
| * Merged sort keys consider on each collation level the first part first entirely, |
| * then the second one. |
| * It is possible to merge multiple sort keys by consecutively merging |
| * another one with the intermediate result. |
| * |
| * The length of the merge result is the sum of the lengths of the input sort keys |
| * minus 1. |
| * |
| * @param src1 the first sort key |
| * @param src1Length the length of the first sort key, including the zero byte at the end; |
| * can be -1 if the function is to find the length |
| * @param src2 the second sort key |
| * @param src2Length the length of the second sort key, including the zero byte at the end; |
| * can be -1 if the function is to find the length |
| * @param dest the buffer where the merged sort key is written, |
| * can be NULL if destCapacity==0 |
| * @param destCapacity the number of bytes in the dest buffer |
| * @return the length of the merged sort key, src1Length+src2Length-1; |
| * can be larger than destCapacity, or 0 if an error occurs (only for illegal arguments), |
| * in which cases the contents of dest is undefined |
| * |
| * @draft |
| */ |
| U_CAPI int32_t U_EXPORT2 |
| ucol_mergeSortkeys(const uint8_t *src1, int32_t src1Length, |
| const uint8_t *src2, int32_t src2Length, |
| uint8_t *dest, int32_t destCapacity) { |
| int32_t destLength; |
| uint8_t b; |
| |
| /* check arguments */ |
| if( src1==NULL || src1Length<-2 || src1Length==0 || (src1Length>0 && src1[src1Length-1]!=0) || |
| src2==NULL || src2Length<-2 || src2Length==0 || (src2Length>0 && src2[src2Length-1]!=0) || |
| destCapacity<0 || (destCapacity>0 && dest==NULL) |
| ) { |
| /* error, attempt to write a zero byte and return 0 */ |
| if(dest!=NULL && destCapacity>0) { |
| *dest=0; |
| } |
| return 0; |
| } |
| |
| /* check lengths and capacity */ |
| if(src1Length<0) { |
| src1Length=(int32_t)uprv_strlen((const char *)src1)+1; |
| } |
| if(src2Length<0) { |
| src2Length=(int32_t)uprv_strlen((const char *)src2)+1; |
| } |
| |
| destLength=src1Length+src2Length-1; |
| if(destLength>destCapacity) { |
| /* the merged sort key does not fit into the destination */ |
| return destLength; |
| } |
| |
| /* merge the sort keys with the same number of levels */ |
| while(*src1!=0 && *src2!=0) { /* while both have another level */ |
| /* copy level from src1 not including 00 or 01 */ |
| while((b=*src1)>=2) { |
| ++src1; |
| *dest++=b; |
| } |
| |
| /* add a 02 merge separator */ |
| *dest++=2; |
| |
| /* copy level from src2 not including 00 or 01 */ |
| while((b=*src2)>=2) { |
| ++src2; |
| *dest++=b; |
| } |
| |
| /* if both sort keys have another level, then add a 01 level separator and continue */ |
| if(*src1==1 && *src2==1) { |
| ++src1; |
| ++src2; |
| *dest++=1; |
| } |
| } |
| |
| /* |
| * here, at least one sort key is finished now, but the other one |
| * might have some contents left from containing more levels; |
| * that contents is just appended to the result |
| */ |
| if(*src1!=0) { |
| /* src1 is not finished, therefore *src2==0, and src1 is appended */ |
| src2=src1; |
| } |
| /* append src2, "the other, unfinished sort key" */ |
| uprv_strcpy((char *)dest, (const char *)src2); |
| |
| /* trust that neither sort key contained illegally embedded zero bytes */ |
| return destLength; |
| } |
| |
| /* sortkey API */ |
| U_CAPI int32_t U_EXPORT2 |
| ucol_getSortKey(const UCollator *coll, |
| const UChar *source, |
| int32_t sourceLength, |
| uint8_t *result, |
| int32_t resultLength) |
| { |
| UErrorCode status = U_ZERO_ERROR; |
| /* this uses the function pointer that is set in updateinternalstate */ |
| /* currently, there are two funcs: */ |
| /*ucol_calcSortKey(...);*/ |
| /*ucol_calcSortKeySimpleTertiary(...);*/ |
| |
| int32_t keySize = coll->sortKeyGen(coll, source, sourceLength, &result, resultLength, FALSE, &status); |
| ((UCollator *)coll)->errorCode = status; /*semantically const */ |
| return keySize; |
| } |
| |
| /* this function is called by the C++ API for sortkey generation */ |
| U_CFUNC int32_t |
| ucol_getSortKeyWithAllocation(const UCollator *coll, |
| const UChar *source, int32_t sourceLength, |
| uint8_t **pResult, |
| UErrorCode *pErrorCode) { |
| *pResult = 0; |
| return coll->sortKeyGen(coll, source, sourceLength, pResult, 0, TRUE, pErrorCode); |
| } |
| |
| #define UCOL_FSEC_BUF_SIZE 256 |
| |
| /* This function tries to get the size of a sortkey. It will be invoked if the size of resulting buffer is 0 */ |
| /* or if we run out of space while making a sortkey and want to return ASAP */ |
| int32_t ucol_getSortKeySize(const UCollator *coll, collIterate *s, int32_t currentSize, UColAttributeValue strength, int32_t len) { |
| UErrorCode status = U_ZERO_ERROR; |
| uint8_t compareSec = (uint8_t)((strength >= UCOL_SECONDARY)?0:0xFF); |
| uint8_t compareTer = (uint8_t)((strength >= UCOL_TERTIARY)?0:0xFF); |
| uint8_t compareQuad = (uint8_t)((strength >= UCOL_QUATERNARY)?0:0xFF); |
| UBool compareIdent = (strength == UCOL_IDENTICAL); |
| UBool doCase = (coll->caseLevel == UCOL_ON); |
| UBool shifted = (coll->alternateHandling == UCOL_SHIFTED); |
| //UBool qShifted = shifted && (compareQuad == 0); |
| UBool doHiragana = (coll->hiraganaQ == UCOL_ON) && (compareQuad == 0); |
| UBool isFrenchSec = (coll->frenchCollation == UCOL_ON) && (compareSec == 0); |
| uint8_t fSecsBuff[UCOL_FSEC_BUF_SIZE]; |
| uint8_t *fSecs = fSecsBuff; |
| uint32_t fSecsLen = 0, fSecsMaxLen = UCOL_FSEC_BUF_SIZE; |
| uint8_t *frenchStartPtr = NULL, *frenchEndPtr = NULL; |
| |
| uint32_t variableTopValue = coll->variableTopValue; |
| uint8_t UCOL_COMMON_BOT4 = (uint8_t)((coll->variableTopValue>>8)+1); |
| if(doHiragana) { |
| UCOL_COMMON_BOT4++; |
| /* allocate one more space for hiragana */ |
| } |
| uint8_t UCOL_BOT_COUNT4 = (uint8_t)(0xFF - UCOL_COMMON_BOT4); |
| |
| uint32_t order = UCOL_NO_MORE_CES; |
| uint8_t primary1 = 0; |
| uint8_t primary2 = 0; |
| uint8_t secondary = 0; |
| uint8_t tertiary = 0; |
| int32_t caseShift = 0; |
| uint32_t c2 = 0, c3 = 0, c4 = 0; /* variables for compression */ |
| |
| uint8_t caseSwitch = coll->caseSwitch; |
| uint8_t tertiaryMask = coll->tertiaryMask; |
| uint8_t tertiaryCommon = coll->tertiaryCommon; |
| |
| UBool wasShifted = FALSE; |
| UBool notIsContinuation = FALSE; |
| uint8_t leadPrimary = 0; |
| |
| |
| for(;;) { |
| order = ucol_IGetNextCE(coll, s, &status); |
| |
| if(order == UCOL_NO_MORE_CES) { |
| break; |
| } |
| |
| if(order == 0) { |
| continue; |
| } |
| |
| notIsContinuation = !isContinuation(order); |
| |
| |
| if(notIsContinuation) { |
| tertiary = (uint8_t)((order & UCOL_BYTE_SIZE_MASK)); |
| } else { |
| tertiary = (uint8_t)((order & UCOL_REMOVE_CONTINUATION)); |
| } |
| secondary = (uint8_t)((order >>= 8) & UCOL_BYTE_SIZE_MASK); |
| primary2 = (uint8_t)((order >>= 8) & UCOL_BYTE_SIZE_MASK); |
| primary1 = (uint8_t)(order >> 8); |
| |
| |
| if(shifted && ((notIsContinuation && order <= variableTopValue && primary1 > 0) |
| || (!notIsContinuation && wasShifted))) { |
| if(compareQuad == 0) { |
| if(c4 > 0) { |
| currentSize += (c2/UCOL_BOT_COUNT4)+1; |
| c4 = 0; |
| } |
| currentSize++; |
| if(primary2 != 0) { |
| currentSize++; |
| } |
| } |
| wasShifted = TRUE; |
| } else { |
| wasShifted = FALSE; |
| /* Note: This code assumes that the table is well built i.e. not having 0 bytes where they are not supposed to be. */ |
| /* Usually, we'll have non-zero primary1 & primary2, except in cases of LatinOne and friends, when primary2 will */ |
| /* calculate sortkey size */ |
| if(primary1 != UCOL_IGNORABLE) { |
| if(notIsContinuation) { |
| if(leadPrimary == primary1) { |
| currentSize++; |
| } else { |
| if(leadPrimary != 0) { |
| currentSize++; |
| } |
| if(primary2 == UCOL_IGNORABLE) { |
| /* one byter, not compressed */ |
| currentSize++; |
| leadPrimary = 0; |
| } else if(primary1<UCOL_BYTE_FIRST_NON_LATIN_PRIMARY || |
| (primary1 > (UCOL_RESET_TOP_VALUE>>24) && primary1 < (UCOL_NEXT_TOP_VALUE>>24))) { |
| /* not compressible */ |
| leadPrimary = 0; |
| currentSize+=2; |
| } else { /* compress */ |
| leadPrimary = primary1; |
| currentSize+=2; |
| } |
| } |
| } else { /* we are in continuation, so we're gonna add primary to the key don't care about compression */ |
| currentSize++; |
| if(primary2 != UCOL_IGNORABLE) { |
| currentSize++; |
| } |
| } |
| } |
| |
| if(secondary > compareSec) { /* I think that != 0 test should be != IGNORABLE */ |
| if(!isFrenchSec){ |
| if (secondary == UCOL_COMMON2 && notIsContinuation) { |
| c2++; |
| } else { |
| if(c2 > 0) { |
| if (secondary > UCOL_COMMON2) { // not necessary for 4th level. |
| currentSize += (c2/(uint32_t)UCOL_TOP_COUNT2)+1; |
| } else { |
| currentSize += (c2/(uint32_t)UCOL_BOT_COUNT2)+1; |
| } |
| c2 = 0; |
| } |
| currentSize++; |
| } |
| } else { |
| fSecs[fSecsLen++] = secondary; |
| if(fSecsLen == fSecsMaxLen) { |
| if(fSecs == fSecsBuff) { |
| fSecs = (uint8_t *)uprv_malloc(2*fSecsLen); |
| } else { |
| fSecs = (uint8_t *)uprv_realloc(fSecs, 2*fSecsLen); |
| } |
| fSecsMaxLen *= 2; |
| } |
| if(notIsContinuation) { |
| if (frenchStartPtr != NULL) { |
| /* reverse secondaries from frenchStartPtr up to frenchEndPtr */ |
| uprv_ucol_reverse_buffer(uint8_t, frenchStartPtr, frenchEndPtr); |
| frenchStartPtr = NULL; |
| } |
| } else { |
| if (frenchStartPtr == NULL) { |
| frenchStartPtr = fSecs+fSecsLen-2; |
| } |
| frenchEndPtr = fSecs+fSecsLen-1; |
| } |
| } |
| } |
| |
| if(doCase) { |
| if (caseShift == 0) { |
| currentSize++; |
| caseShift = UCOL_CASE_SHIFT_START; |
| } |
| if((tertiary&0x3F) > 0 && notIsContinuation) { |
| caseShift--; |
| if((tertiary &0xC0) != 0) { |
| if (caseShift == 0) { |
| currentSize++; |
| caseShift = UCOL_CASE_SHIFT_START; |
| } |
| caseShift--; |
| } |
| } |
| } else { |
| if(notIsContinuation) { |
| tertiary ^= caseSwitch; |
| } |
| } |
| |
| tertiary &= tertiaryMask; |
| if(tertiary > compareTer) { /* I think that != 0 test should be != IGNORABLE */ |
| if (tertiary == tertiaryCommon && notIsContinuation) { |
| c3++; |
| } else { |
| if(c3 > 0) { |
| if((tertiary > tertiaryCommon && tertiaryCommon == UCOL_COMMON3_NORMAL) |
| || (tertiary <= tertiaryCommon && tertiaryCommon == UCOL_COMMON3_UPPERFIRST)) { |
| currentSize += (c3/(uint32_t)coll->tertiaryTopCount)+1; |
| } else { |
| currentSize += (c3/(uint32_t)coll->tertiaryBottomCount)+1; |
| } |
| c3 = 0; |
| } |
| currentSize++; |
| } |
| } |
| |
| if(/*qShifted*/(compareQuad==0) && notIsContinuation) { |
| if(s->flags & UCOL_WAS_HIRAGANA) { // This was Hiragana and we need to note it |
| if(c4>0) { // Close this part |
| currentSize += (c4/UCOL_BOT_COUNT4)+1; |
| c4 = 0; |
| } |
| currentSize++; // Add the Hiragana |
| } else { // This wasn't Hiragana, so we can continue adding stuff |
| c4++; |
| } |
| } |
| |
| } |
| } |
| |
| if(!isFrenchSec){ |
| if(c2 > 0) { |
| currentSize += (c2/(uint32_t)UCOL_BOT_COUNT2)+1; |
| } |
| } else { |
| uint32_t i = 0; |
| if(frenchStartPtr != NULL) { |
| uprv_ucol_reverse_buffer(uint8_t, frenchStartPtr, frenchEndPtr); |
| } |
| for(i = 0; i<fSecsLen; i++) { |
| secondary = *(fSecs+fSecsLen-i-1); |
| /* This is compression code. */ |
| if (secondary == UCOL_COMMON2) { |
| ++c2; |
| } else { |
| if(c2 > 0) { |
| if (secondary > UCOL_COMMON2) { // not necessary for 4th level. |
| currentSize += (c2/(uint32_t)UCOL_TOP_COUNT2)+1; |
| } else { |
| currentSize += (c2/(uint32_t)UCOL_BOT_COUNT2)+1; |
| } |
| c2 = 0; |
| } |
| currentSize++; |
| } |
| } |
| if(c2 > 0) { |
| currentSize += (c2/(uint32_t)UCOL_BOT_COUNT2)+1; |
| } |
| if(fSecs != fSecsBuff) { |
| uprv_free(fSecs); |
| } |
| } |
| |
| if(c3 > 0) { |
| currentSize += (c3/(uint32_t)coll->tertiaryBottomCount)+1; |
| } |
| |
| if(c4 > 0 && compareQuad == 0) { |
| currentSize += (c4/UCOL_BOT_COUNT4)+1; |
| } |
| |
| if(compareIdent) { |
| currentSize += u_lengthOfIdenticalLevelRun(s->string, len); |
| } |
| return currentSize; |
| |
| } |
| |
| static |
| inline void doCaseShift(uint8_t **cases, uint32_t &caseShift) { |
| if (caseShift == 0) { |
| *(*cases)++ = UCOL_CASE_BYTE_START; |
| caseShift = UCOL_CASE_SHIFT_START; |
| } |
| } |
| |
| static |
| inline uint8_t *packFrench(uint8_t *primaries, uint8_t *secondaries, uint32_t *secsize, uint8_t *frenchStartPtr, uint8_t *frenchEndPtr) { |
| uint8_t secondary; |
| int32_t count2 = 0; |
| uint32_t i = 0; |
| uint8_t *primStart = primaries; |
| /* If there are any unresolved continuation secondaries, reverse them here so that we can reverse the whole secondary thing */ |
| if(frenchStartPtr != NULL) { |
| uprv_ucol_reverse_buffer(uint8_t, frenchStartPtr, frenchEndPtr); |
| } |
| for(i = 0; i<*secsize; i++) { |
| secondary = *(secondaries-i-1); |
| /* This is compression code. */ |
| if (secondary == UCOL_COMMON2) { |
| ++count2; |
| } else { |
| if (count2 > 0) { |
| if (secondary > UCOL_COMMON2) { // not necessary for 4th level. |
| while (count2 > UCOL_TOP_COUNT2) { |
| *(primaries)++ = (uint8_t)(UCOL_COMMON_TOP2 - UCOL_TOP_COUNT2); |
| count2 -= (uint32_t)UCOL_TOP_COUNT2; |
| } |
| *(primaries)++ = (uint8_t)(UCOL_COMMON_TOP2 - (count2-1)); |
| } else { |
| while (count2 > UCOL_BOT_COUNT2) { |
| *(primaries)++ = (uint8_t)(UCOL_COMMON_BOT2 + UCOL_BOT_COUNT2); |
| count2 -= (uint32_t)UCOL_BOT_COUNT2; |
| } |
| *(primaries)++ = (uint8_t)(UCOL_COMMON_BOT2 + (count2-1)); |
| } |
| count2 = 0; |
| } |
| *(primaries)++ = secondary; |
| //*(primaries++) = *(secondaries-i-1); |
| } |
| } |
| if (count2 > 0) { |
| while (count2 > UCOL_BOT_COUNT2) { |
| *(primaries)++ = (uint8_t)(UCOL_COMMON_BOT2 + UCOL_BOT_COUNT2); |
| count2 -= (uint32_t)UCOL_BOT_COUNT2; |
| } |
| *(primaries)++ = (uint8_t)(UCOL_COMMON_BOT2 + (count2-1)); |
| } |
| *secsize = primaries - primStart; |
| return primaries; |
| } |
| |
| /* This is the sortkey work horse function */ |
| int32_t |
| ucol_calcSortKey(const UCollator *coll, |
| const UChar *source, |
| int32_t sourceLength, |
| uint8_t **result, |
| uint32_t resultLength, |
| UBool allocateSKBuffer, |
| UErrorCode *status) |
| { |
| uint32_t i = 0; /* general purpose counter */ |
| |
| /* Stack allocated buffers for buffers we use */ |
| uint8_t prim[UCOL_PRIMARY_MAX_BUFFER], second[UCOL_SECONDARY_MAX_BUFFER], tert[UCOL_TERTIARY_MAX_BUFFER], caseB[UCOL_CASE_MAX_BUFFER], quad[UCOL_QUAD_MAX_BUFFER]; |
| |
| uint8_t *primaries = *result, *secondaries = second, *tertiaries = tert, *cases = caseB, *quads = quad; |
| |
| if(U_FAILURE(*status)) { |
| return 0; |
| } |
| |
| if(primaries == NULL && allocateSKBuffer == TRUE) { |
| primaries = *result = prim; |
| resultLength = UCOL_PRIMARY_MAX_BUFFER; |
| } |
| |
| uint32_t secSize = UCOL_SECONDARY_MAX_BUFFER, terSize = UCOL_TERTIARY_MAX_BUFFER, |
| caseSize = UCOL_CASE_MAX_BUFFER, quadSize = UCOL_QUAD_MAX_BUFFER; |
| |
| uint32_t sortKeySize = 1; /* it is always \0 terminated */ |
| |
| UChar normBuffer[UCOL_NORMALIZATION_MAX_BUFFER]; |
| UChar *normSource = normBuffer; |
| int32_t normSourceLen = UCOL_NORMALIZATION_MAX_BUFFER; |
| |
| int32_t len = (sourceLength == -1 ? u_strlen(source) : sourceLength); |
| |
| UColAttributeValue strength = coll->strength; |
| |
| uint8_t compareSec = (uint8_t)((strength >= UCOL_SECONDARY)?0:0xFF); |
| uint8_t compareTer = (uint8_t)((strength >= UCOL_TERTIARY)?0:0xFF); |
| uint8_t compareQuad = (uint8_t)((strength >= UCOL_QUATERNARY)?0:0xFF); |
| UBool compareIdent = (strength == UCOL_IDENTICAL); |
| UBool doCase = (coll->caseLevel == UCOL_ON); |
| UBool isFrenchSec = (coll->frenchCollation == UCOL_ON) && (compareSec == 0); |
| UBool shifted = (coll->alternateHandling == UCOL_SHIFTED); |
| //UBool qShifted = shifted && (compareQuad == 0); |
| UBool doHiragana = (coll->hiraganaQ == UCOL_ON) && (compareQuad == 0); |
| const uint8_t *scriptOrder = coll->scriptOrder; |
| |
| uint32_t variableTopValue = coll->variableTopValue; |
| // TODO: UCOL_COMMON_BOT4 should be a function of qShifted. If we have no |
| // qShifted, we don't need to set UCOL_COMMON_BOT4 so high. |
| uint8_t UCOL_COMMON_BOT4 = (uint8_t)((coll->variableTopValue>>8)+1); |
| uint8_t UCOL_HIRAGANA_QUAD = 0; |
| if(doHiragana) { |
| UCOL_HIRAGANA_QUAD=UCOL_COMMON_BOT4++; |
| /* allocate one more space for hiragana, value for hiragana */ |
| } |
| uint8_t UCOL_BOT_COUNT4 = (uint8_t)(0xFF - UCOL_COMMON_BOT4); |
| |
| /* support for special features like caselevel and funky secondaries */ |
| uint8_t *frenchStartPtr = NULL; |
| uint8_t *frenchEndPtr = NULL; |
| uint32_t caseShift = 0; |
| |
| sortKeySize += ((compareSec?0:1) + (compareTer?0:1) + (doCase?1:0) + /*(qShifted?1:0)*/(compareQuad?0:1) + (compareIdent?1:0)); |
| |
| /* If we need to normalize, we'll do it all at once at the beginning! */ |
| UNormalizationMode normMode; |
| if(compareIdent) { |
| normMode = UNORM_NFD; |
| } else if(coll->normalizationMode != UCOL_OFF) { |
| normMode = UNORM_FCD; |
| } else { |
| normMode = UNORM_NONE; |
| } |
| |
| if(normMode != UNORM_NONE && UNORM_YES != unorm_quickCheck(source, len, normMode, status)) { |
| len = unorm_internalNormalize(normSource, normSourceLen, |
| source, len, |
| normMode, FALSE, |
| status); |
| if(*status == U_BUFFER_OVERFLOW_ERROR) { |
| normSourceLen = len; |
| normSource = (UChar *)uprv_malloc(len*U_SIZEOF_UCHAR); |
| if(normSource == NULL) { |
| *status = U_MEMORY_ALLOCATION_ERROR; |
| return 0; |
| } |
| *status = U_ZERO_ERROR; |
| len = unorm_internalNormalize(normSource, normSourceLen, |
| source, len, |
| normMode, FALSE, |
| status); |
| } |
| |
| if(U_FAILURE(*status)) { |
| return 0; |
| } |
| source = normSource; |
| } |
| |
| collIterate s; |
| IInit_collIterate(coll, (UChar *)source, len, &s); |
| if(source == normSource) { |
| s.flags &= ~UCOL_ITER_NORM; |
| } |
| |
| if(resultLength == 0 || primaries == NULL) { |
| int32_t keyLen = ucol_getSortKeySize(coll, &s, sortKeySize, strength, len); |
| if(normSource != normBuffer) { |
| uprv_free(normSource); |
| } |
| return keyLen; |
| } |
| uint8_t *primarySafeEnd = primaries + resultLength - 2; |
| |
| uint32_t minBufferSize = UCOL_MAX_BUFFER; |
| |
| uint8_t *primStart = primaries; |
| uint8_t *secStart = secondaries; |
| uint8_t *terStart = tertiaries; |
| uint8_t *caseStart = cases; |
| uint8_t *quadStart = quads; |
| |
| uint32_t order = 0; |
| |
| uint8_t primary1 = 0; |
| uint8_t primary2 = 0; |
| uint8_t secondary = 0; |
| uint8_t tertiary = 0; |
| uint8_t caseSwitch = coll->caseSwitch; |
| uint8_t tertiaryMask = coll->tertiaryMask; |
| int8_t tertiaryAddition = (int8_t)coll->tertiaryAddition; |
| uint8_t tertiaryTop = coll->tertiaryTop; |
| uint8_t tertiaryBottom = coll->tertiaryBottom; |
| uint8_t tertiaryCommon = coll->tertiaryCommon; |
| uint8_t caseBits = 0; |
| |
| UBool finished = FALSE; |
| UBool resultOverflow = FALSE; |
| UBool wasShifted = FALSE; |
| UBool notIsContinuation = FALSE; |
| |
| uint32_t prevBuffSize = 0; |
| |
| uint32_t count2 = 0, count3 = 0, count4 = 0; |
| uint8_t leadPrimary = 0; |
| |
| for(;;) { |
| for(i=prevBuffSize; i<minBufferSize; ++i) { |
| |
| order = ucol_IGetNextCE(coll, &s, status); |
| |
| if(order == UCOL_NO_MORE_CES) { |
| finished = TRUE; |
| break; |
| } |
| |
| if(order == 0) { |
| continue; |
| } |
| |
| notIsContinuation = !isContinuation(order); |
| |
| if(notIsContinuation) { |
| tertiary = (uint8_t)(order & UCOL_BYTE_SIZE_MASK); |
| } else { |
| tertiary = (uint8_t)((order & UCOL_REMOVE_CONTINUATION)); |
| } |
| |
| secondary = (uint8_t)((order >>= 8) & UCOL_BYTE_SIZE_MASK); |
| primary2 = (uint8_t)((order >>= 8) & UCOL_BYTE_SIZE_MASK); |
| primary1 = (uint8_t)(order >> 8); |
| |
| if(notIsContinuation) { |
| if(scriptOrder != NULL) { |
| primary1 = scriptOrder[primary1]; |
| } |
| } |
| |
| if(shifted && ((notIsContinuation && order <= variableTopValue && primary1 > 0) |
| || (!notIsContinuation && wasShifted))) { |
| if(count4 > 0) { |
| while (count4 > UCOL_BOT_COUNT4) { |
| *quads++ = (uint8_t)(UCOL_COMMON_BOT4 + UCOL_BOT_COUNT4); |
| count4 -= UCOL_BOT_COUNT4; |
| } |
| *quads++ = (uint8_t)(UCOL_COMMON_BOT4 + (count4-1)); |
| count4 = 0; |
| } |
| /* We are dealing with a variable and we're treating them as shifted */ |
| /* This is a shifted ignorable */ |
| if(primary1 != 0) { /* we need to check this since we could be in continuation */ |
| *quads++ = primary1; |
| } |
| if(primary2 != 0) { |
| *quads++ = primary2; |
| } |
| wasShifted = TRUE; |
| } else { |
| wasShifted = FALSE; |
| /* Note: This code assumes that the table is well built i.e. not having 0 bytes where they are not supposed to be. */ |
| /* Usually, we'll have non-zero primary1 & primary2, except in cases of LatinOne and friends, when primary2 will */ |
| /* regular and simple sortkey calc */ |
| if(primary1 != UCOL_IGNORABLE) { |
| if(notIsContinuation) { |
| if(leadPrimary == primary1) { |
| *primaries++ = primary2; |
| } else { |
| if(leadPrimary != 0) { |
| *primaries++ = (uint8_t)((primary1 > leadPrimary) ? UCOL_BYTE_UNSHIFTED_MAX : UCOL_BYTE_UNSHIFTED_MIN); |
| } |
| if(primary2 == UCOL_IGNORABLE) { |
| /* one byter, not compressed */ |
| *primaries++ = primary1; |
| leadPrimary = 0; |
| } else if(primary1<UCOL_BYTE_FIRST_NON_LATIN_PRIMARY || |
| (primary1 > (UCOL_RESET_TOP_VALUE>>24) && primary1 < (UCOL_NEXT_TOP_VALUE>>24))) { |
| /* not compressible */ |
| leadPrimary = 0; |
| *primaries++ = primary1; |
| *primaries++ = primary2; |
| } else { /* compress */ |
| *primaries++ = leadPrimary = primary1; |
| *primaries++ = primary2; |
| } |
| } |
| } else { /* we are in continuation, so we're gonna add primary to the key don't care about compression */ |
| *primaries++ = primary1; |
| if(primary2 != UCOL_IGNORABLE) { |
| *primaries++ = primary2; /* second part */ |
| } |
| } |
| } |
| |
| if(secondary > compareSec) { |
| if(!isFrenchSec) { |
| /* This is compression code. */ |
| if (secondary == UCOL_COMMON2 && notIsContinuation) { |
| ++count2; |
| } else { |
| if (count2 > 0) { |
| if (secondary > UCOL_COMMON2) { // not necessary for 4th level. |
| while (count2 > UCOL_TOP_COUNT2) { |
| *secondaries++ = (uint8_t)(UCOL_COMMON_TOP2 - UCOL_TOP_COUNT2); |
| count2 -= (uint32_t)UCOL_TOP_COUNT2; |
| } |
| *secondaries++ = (uint8_t)(UCOL_COMMON_TOP2 - (count2-1)); |
| } else { |
| while (count2 > UCOL_BOT_COUNT2) { |
| *secondaries++ = (uint8_t)(UCOL_COMMON_BOT2 + UCOL_BOT_COUNT2); |
| count2 -= (uint32_t)UCOL_BOT_COUNT2; |
| } |
| *secondaries++ = (uint8_t)(UCOL_COMMON_BOT2 + (count2-1)); |
| } |
| count2 = 0; |
| } |
| *secondaries++ = secondary; |
| } |
| } else { |
| *secondaries++ = secondary; |
| /* Do the special handling for French secondaries */ |
| /* We need to get continuation elements and do intermediate restore */ |
| /* abc1c2c3de with french secondaries need to be edc1c2c3ba NOT edc3c2c1ba */ |
| if(notIsContinuation) { |
| if (frenchStartPtr != NULL) { |
| /* reverse secondaries from frenchStartPtr up to frenchEndPtr */ |
| uprv_ucol_reverse_buffer(uint8_t, frenchStartPtr, frenchEndPtr); |
| frenchStartPtr = NULL; |
| } |
| } else { |
| if (frenchStartPtr == NULL) { |
| frenchStartPtr = secondaries - 2; |
| } |
| frenchEndPtr = secondaries-1; |
| } |
| } |
| } |
| |
| if(doCase) { |
| doCaseShift(&cases, caseShift); |
| if(notIsContinuation) { |
| caseBits = (uint8_t)(tertiary & 0xC0); |
| |
| if(tertiary != 0) { |
| if(coll->caseFirst == UCOL_UPPER_FIRST) { |
| if((caseBits & 0xC0) == 0) { |
| *(cases-1) |= 1 << (--caseShift); |
| } else { |
| *(cases-1) |= 0 << (--caseShift); |
| /* second bit */ |
| doCaseShift(&cases, caseShift); |
| *(cases-1) |= ((caseBits>>6)&1) << (--caseShift); |
| } |
| } else { |
| if((caseBits & 0xC0) == 0) { |
| *(cases-1) |= 0 << (--caseShift); |
| } else { |
| *(cases-1) |= 1 << (--caseShift); |
| /* second bit */ |
| doCaseShift(&cases, caseShift); |
| *(cases-1) |= ((caseBits>>7)&1) << (--caseShift); |
| } |
| } |
| } |
| |
| } |
| } else { |
| if(notIsContinuation) { |
| tertiary ^= caseSwitch; |
| } |
| } |
| |
| tertiary &= tertiaryMask; |
| if(tertiary > compareTer) { |
| /* This is compression code. */ |
| /* sequence size check is included in the if clause */ |
| if (tertiary == tertiaryCommon && notIsContinuation) { |
| ++count3; |
| } else { |
| if((tertiary > tertiaryCommon && tertiaryCommon == UCOL_COMMON3_NORMAL) |
| || (tertiary <= tertiaryCommon && tertiaryCommon == UCOL_COMMON3_UPPERFIRST)) { |
| tertiary += tertiaryAddition; |
| } |
| if (count3 > 0) { |
| if ((tertiary > tertiaryCommon)) { |
| while (count3 > coll->tertiaryTopCount) { |
| *tertiaries++ = (uint8_t)(tertiaryTop - coll->tertiaryTopCount); |
| count3 -= (uint32_t)coll->tertiaryTopCount; |
| } |
| *tertiaries++ = (uint8_t)(tertiaryTop - (count3-1)); |
| } else { |
| while (count3 > coll->tertiaryBottomCount) { |
| *tertiaries++ = (uint8_t)(tertiaryBottom + coll->tertiaryBottomCount); |
| count3 -= (uint32_t)coll->tertiaryBottomCount; |
| } |
| *tertiaries++ = (uint8_t)(tertiaryBottom + (count3-1)); |
| } |
| count3 = 0; |
| } |
| *tertiaries++ = tertiary; |
| } |
| } |
| |
| if(/*qShifted*/(compareQuad==0) && notIsContinuation) { |
| if(s.flags & UCOL_WAS_HIRAGANA) { // This was Hiragana and we need to note it |
| if(count4>0) { // Close this part |
| while (count4 > UCOL_BOT_COUNT4) { |
| *quads++ = (uint8_t)(UCOL_COMMON_BOT4 + UCOL_BOT_COUNT4); |
| count4 -= UCOL_BOT_COUNT4; |
| } |
| *quads++ = (uint8_t)(UCOL_COMMON_BOT4 + (count4-1)); |
| count4 = 0; |
| } |
| *quads++ = UCOL_HIRAGANA_QUAD; // Add the Hiragana |
| } else { // This wasn't Hiragana, so we can continue adding stuff |
| count4++; |
| } |
| } |
| } |
| |
| if(primaries > primarySafeEnd) { /* We have stepped over the primary buffer */ |
| int32_t sks = sortKeySize+(primaries - primStart)+(secondaries - secStart)+(tertiaries - terStart)+(cases-caseStart)+(quads-quadStart); |
| if(allocateSKBuffer == FALSE) { /* need to save our butts if we cannot reallocate */ |
| resultOverflow = TRUE; |
| sortKeySize = ucol_getSortKeySize(coll, &s, sks, strength, len); |
| *status = U_MEMORY_ALLOCATION_ERROR; |
| finished = TRUE; |
| break; |
| } else { /* It's much nicer if we can actually reallocate */ |
| primStart = reallocateBuffer(&primaries, *result, prim, &resultLength, 2*sks, status); |
| *result = primStart; |
| primarySafeEnd = primStart + resultLength - 2; |
| } |
| } |
| } |
| if(finished) { |
| break; |
| } else { |
| prevBuffSize = minBufferSize; |
| secStart = reallocateBuffer(&secondaries, secStart, second, &secSize, 2*secSize, status); |
| terStart = reallocateBuffer(&tertiaries, terStart, tert, &terSize, 2*terSize, status); |
| caseStart = reallocateBuffer(&cases, caseStart, caseB, &caseSize, 2*caseSize, status); |
| quadStart = reallocateBuffer(&quads, quadStart, quad, &quadSize, 2*quadSize, status); |
| minBufferSize *= 2; |
| } |
| } |
| |
| /* Here, we are generally done with processing */ |
| /* bailing out would not be too productive */ |
| |
| |
| if(U_SUCCESS(*status)) { |
| sortKeySize += (primaries - primStart); |
| /* we have done all the CE's, now let's put them together to form a key */ |
| if(compareSec == 0) { |
| if (count2 > 0) { |
| while (count2 > UCOL_BOT_COUNT2) { |
| *secondaries++ = (uint8_t)(UCOL_COMMON_BOT2 + UCOL_BOT_COUNT2); |
| count2 -= (uint32_t)UCOL_BOT_COUNT2; |
| } |
| *secondaries++ = (uint8_t)(UCOL_COMMON_BOT2 + (count2-1)); |
| } |
| *(primaries++) = UCOL_LEVELTERMINATOR; |
| uint32_t secsize = secondaries-secStart; |
| if(sortKeySize <= resultLength) { |
| if(isFrenchSec) { /* do the reverse copy */ |
| primaries = packFrench(primaries, secondaries, &secsize, frenchStartPtr, frenchEndPtr); |
| sortKeySize += secsize; |
| } else { |
| sortKeySize += secsize; |
| uprv_memcpy(primaries, secStart, secsize); |
| primaries += secsize; |
| } |
| } else { |
| if(allocateSKBuffer == TRUE) { /* need to save our butts if we cannot reallocate */ |
| primStart = reallocateBuffer(&primaries, *result, prim, &resultLength, 2*sortKeySize, status); |
| *result = primStart; |
| if(isFrenchSec) { /* do the reverse copy */ |
| primaries = packFrench(primaries, secondaries, &secsize, frenchStartPtr, frenchEndPtr); |
| sortKeySize += secsize; |
| } else { |
| sortKeySize += secsize; |
| uprv_memcpy(primaries, secStart, secsize); |
| primaries += secsize; |
| } |
| } else { |
| *status = U_MEMORY_ALLOCATION_ERROR; |
| } |
| } |
| } |
| |
| if(doCase) { |
| uint32_t casesize = cases - caseStart; |
| sortKeySize += casesize; |
| *(primaries++) = UCOL_LEVELTERMINATOR; |
| if(sortKeySize <= resultLength) { |
| uprv_memcpy(primaries, caseStart, casesize); |
| primaries += casesize; |
| } else { |
| if(allocateSKBuffer == TRUE) { |
| primStart = reallocateBuffer(&primaries, *result, prim, &resultLength, 2*sortKeySize, status); |
| *result = primStart; |
| uprv_memcpy(primaries, caseStart, casesize); |
| } else { |
| *status = U_MEMORY_ALLOCATION_ERROR; |
| } |
| } |
| } |
| |
| if(compareTer == 0) { |
| if (count3 > 0) { |
| if (coll->tertiaryCommon != UCOL_COMMON_BOT3) { |
| while (count3 >= coll->tertiaryTopCount) { |
| *tertiaries++ = (uint8_t)(tertiaryTop - coll->tertiaryTopCount); |
| count3 -= (uint32_t)coll->tertiaryTopCount; |
| } |
| *tertiaries++ = (uint8_t)(tertiaryTop - count3); |
| } else { |
| while (count3 > coll->tertiaryBottomCount) { |
| *tertiaries++ = (uint8_t)(tertiaryBottom + coll->tertiaryBottomCount); |
| count3 -= (uint32_t)coll->tertiaryBottomCount; |
| } |
| *tertiaries++ = (uint8_t)(tertiaryBottom + (count3-1)); |
| } |
| } |
| uint32_t tersize = tertiaries - terStart; |
| sortKeySize += tersize; |
| *(primaries++) = UCOL_LEVELTERMINATOR; |
| if(sortKeySize <= resultLength) { |
| uprv_memcpy(primaries, terStart, tersize); |
| primaries += tersize; |
| if(compareQuad == 0/*qShifted == TRUE*/) { |
| if(count4 > 0) { |
| while (count4 > UCOL_BOT_COUNT4) { |
| *quads++ = (uint8_t)(UCOL_COMMON_BOT4 + UCOL_BOT_COUNT4); |
| count4 -= UCOL_BOT_COUNT4; |
| } |
| *quads++ = (uint8_t)(UCOL_COMMON_BOT4 + (count4-1)); |
| } |
| *(primaries++) = UCOL_LEVELTERMINATOR; |
| uint32_t quadsize = quads - quadStart; |
| sortKeySize += quadsize; |
| if(sortKeySize <= resultLength) { |
| uprv_memcpy(primaries, quadStart, quadsize); |
| primaries += quadsize; |
| } else { |
| if(allocateSKBuffer == TRUE) { |
| primStart = reallocateBuffer(&primaries, *result, prim, &resultLength, 2*sortKeySize, status); |
| *result = primStart; |
| uprv_memcpy(primaries, quadStart, quadsize); |
| } else { |
| *status = U_MEMORY_ALLOCATION_ERROR; |
| } |
| } |
| } |
| } else { |
| if(allocateSKBuffer == TRUE) { |
| primStart = reallocateBuffer(&primaries, *result, prim, &resultLength, 2*sortKeySize, status); |
| *result = primStart; |
| uprv_memcpy(primaries, terStart, tersize); |
| } else { |
| *status = U_MEMORY_ALLOCATION_ERROR; |
| } |
| } |
| |
| if(compareIdent) { |
| *(primaries++) = UCOL_LEVELTERMINATOR; |
| sortKeySize += u_lengthOfIdenticalLevelRun(s.string, len); |
| if(sortKeySize <= resultLength) { |
| primaries += u_writeIdenticalLevelRun(s.string, len, primaries); |
| } else { |
| if(allocateSKBuffer == TRUE) { |
| primStart = reallocateBuffer(&primaries, *result, prim, &resultLength, sortKeySize, status); |
| *result = primStart; |
| u_writeIdenticalLevelRun(s.string, len, primaries); } else { |
| *status = U_MEMORY_ALLOCATION_ERROR; |
| } |
| } |
| } |
| |
| } |
| *(primaries++) = '\0'; |
| } |
| |
| if(terStart != tert) { |
| uprv_free(terStart); |
| uprv_free(secStart); |
| uprv_free(caseStart); |
| uprv_free(quadStart); |
| } |
| |
| if(normSource != normBuffer) { |
| uprv_free(normSource); |
| } |
| |
| if(allocateSKBuffer == TRUE) { |
| *result = (uint8_t*)uprv_malloc(sortKeySize); |
| uprv_memcpy(*result, primStart, sortKeySize); |
| if(primStart != prim) { |
| uprv_free(primStart); |
| } |
| } |
| |
| return sortKeySize; |
| } |
| |
| |
| int32_t |
| ucol_calcSortKeySimpleTertiary(const UCollator *coll, |
| const UChar *source, |
| int32_t sourceLength, |
| uint8_t **result, |
| uint32_t resultLength, |
| UBool allocateSKBuffer, |
| UErrorCode *status) |
| { |
| U_ALIGN_CODE(16); |
| uint32_t i = 0; /* general purpose counter */ |
| |
| /* Stack allocated buffers for buffers we use */ |
| uint8_t prim[UCOL_PRIMARY_MAX_BUFFER], second[UCOL_SECONDARY_MAX_BUFFER], tert[UCOL_TERTIARY_MAX_BUFFER]; |
| |
| uint8_t *primaries = *result, *secondaries = second, *tertiaries = tert; |
| |
| if(U_FAILURE(*status)) { |
| return 0; |
| } |
| |
| if(primaries == NULL && allocateSKBuffer == TRUE) { |
| primaries = *result = prim; |
| resultLength = UCOL_PRIMARY_MAX_BUFFER; |
| } |
| |
| uint32_t secSize = UCOL_SECONDARY_MAX_BUFFER, terSize = UCOL_TERTIARY_MAX_BUFFER; |
| |
| uint32_t sortKeySize = 3; /* it is always \0 terminated plus separators for secondary and tertiary */ |
| |
| UChar normBuffer[UCOL_NORMALIZATION_MAX_BUFFER]; |
| UChar *normSource = normBuffer; |
| int32_t normSourceLen = UCOL_NORMALIZATION_MAX_BUFFER; |
| |
| int32_t len = sourceLength; |
| |
| /* If we need to normalize, we'll do it all at once at the beginning! */ |
| if(coll->normalizationMode != UCOL_OFF && UNORM_YES != unorm_quickCheck(source, len, UNORM_FCD, status)) { |
| len = unorm_internalNormalize(normSource, normSourceLen, |
| source, len, |
| UNORM_FCD, FALSE, |
| status); |
| if(*status == U_BUFFER_OVERFLOW_ERROR) { |
| normSourceLen = len; |
| normSource = (UChar *)uprv_malloc(len*U_SIZEOF_UCHAR); |
| if(normSource == NULL) { |
| *status = U_MEMORY_ALLOCATION_ERROR; |
| return 0; |
| } |
| *status = U_ZERO_ERROR; |
| len = unorm_internalNormalize(normSource, normSourceLen, |
| source, len, |
| UNORM_FCD, FALSE, |
| status); |
| } |
| |
| if(U_FAILURE(*status)) { |
| return 0; |
| } |
| source = normSource; |
| } |
| |
| collIterate s; |
| IInit_collIterate(coll, (UChar *)source, len, &s); |
| if(source == normSource) { |
| s.flags &= ~UCOL_ITER_NORM; |
| } |
| |
| if(resultLength == 0 || primaries == NULL) { |
| int32_t t = ucol_getSortKeySize(coll, &s, sortKeySize, coll->strength, len); |
| if(normSource != normBuffer) { |
| uprv_free(normSource); |
| } |
| return t; |
| } |
| |
| uint8_t *primarySafeEnd = primaries + resultLength - 2; |
| |
| uint32_t minBufferSize = UCOL_MAX_BUFFER; |
| |
| uint8_t *primStart = primaries; |
| uint8_t *secStart = secondaries; |
| uint8_t *terStart = tertiaries; |
| |
| uint32_t order = 0; |
| |
| uint8_t primary1 = 0; |
| uint8_t primary2 = 0; |
| uint8_t secondary = 0; |
| uint8_t tertiary = 0; |
| uint8_t caseSwitch = coll->caseSwitch; |
| uint8_t tertiaryMask = coll->tertiaryMask; |
| int8_t tertiaryAddition = (int8_t)coll->tertiaryAddition; |
| uint8_t tertiaryTop = coll->tertiaryTop; |
| uint8_t tertiaryBottom = coll->tertiaryBottom; |
| uint8_t tertiaryCommon = coll->tertiaryCommon; |
| |
| uint32_t prevBuffSize = 0; |
| |
| UBool finished = FALSE; |
| UBool resultOverflow = FALSE; |
| UBool notIsContinuation = FALSE; |
| |
| uint32_t count2 = 0, count3 = 0; |
| uint8_t leadPrimary = 0; |
| |
| for(;;) { |
| for(i=prevBuffSize; i<minBufferSize; ++i) { |
| |
| order = ucol_IGetNextCE(coll, &s, status); |
| |
| if(order == 0) { |
| continue; |
| } |
| |
| if(order == UCOL_NO_MORE_CES) { |
| finished = TRUE; |
| break; |
| } |
| |
| notIsContinuation = !isContinuation(order); |
| |
| if(notIsContinuation) { |
| tertiary = (uint8_t)((order & tertiaryMask)); |
| } else { |
| tertiary = (uint8_t)((order & UCOL_REMOVE_CONTINUATION)); |
| } |
| secondary = (uint8_t)((order >>= 8) & UCOL_BYTE_SIZE_MASK); |
| primary2 = (uint8_t)((order >>= 8) & UCOL_BYTE_SIZE_MASK); |
| primary1 = (uint8_t)(order >> 8); |
| |
| /* Note: This code assumes that the table is well built i.e. not having 0 bytes where they are not supposed to be. */ |
| /* Usually, we'll have non-zero primary1 & primary2, except in cases of LatinOne and friends, when primary2 will */ |
| /* be zero with non zero primary1. primary3 is different than 0 only for long primaries - see above. */ |
| /* regular and simple sortkey calc */ |
| if(primary1 != UCOL_IGNORABLE) { |
| if(notIsContinuation) { |
| if(leadPrimary == primary1) { |
| *primaries++ = primary2; |
| } else { |
| if(leadPrimary != 0) { |
| *primaries++ = (uint8_t)((primary1 > leadPrimary) ? UCOL_BYTE_UNSHIFTED_MAX : UCOL_BYTE_UNSHIFTED_MIN); |
| } |
| if(primary2 == UCOL_IGNORABLE) { |
| /* one byter, not compressed */ |
| *primaries++ = primary1; |
| leadPrimary = 0; |
| } else if(primary1<UCOL_BYTE_FIRST_NON_LATIN_PRIMARY || |
| (primary1 > (UCOL_RESET_TOP_VALUE>>24) && primary1 < (UCOL_NEXT_TOP_VALUE>>24))) { |
| /* not compressible */ |
| leadPrimary = 0; |
| *primaries++ = primary1; |
| *primaries++ = primary2; |
| } else { /* compress */ |
| *primaries++ = leadPrimary = primary1; |
| *primaries++ = primary2; |
| } |
| } |
| } else { /* we are in continuation, so we're gonna add primary to the key don't care about compression */ |
| *primaries++ = primary1; |
| if(primary2 != UCOL_IGNORABLE) { |
| *primaries++ = primary2; /* second part */ |
| } |
| } |
| } |
| |
| if(secondary > 0) { /* I think that != 0 test should be != IGNORABLE */ |
| /* This is compression code. */ |
| if (secondary == UCOL_COMMON2 && notIsContinuation) { |
| ++count2; |
| } else { |
| if (count2 > 0) { |
| if (secondary > UCOL_COMMON2) { // not necessary for 4th level. |
| while (count2 > UCOL_TOP_COUNT2) { |
| *secondaries++ = (uint8_t)(UCOL_COMMON_TOP2 - UCOL_TOP_COUNT2); |
| count2 -= (uint32_t)UCOL_TOP_COUNT2; |
| } |
| *secondaries++ = (uint8_t)(UCOL_COMMON_TOP2 - (count2-1)); |
| } else { |
| while (count2 > UCOL_BOT_COUNT2) { |
| *secondaries++ = (uint8_t)(UCOL_COMMON_BOT2 + UCOL_BOT_COUNT2); |
| count2 -= (uint32_t)UCOL_BOT_COUNT2; |
| } |
| *secondaries++ = (uint8_t)(UCOL_COMMON_BOT2 + (count2-1)); |
| } |
| count2 = 0; |
| } |
| *secondaries++ = secondary; |
| } |
| } |
| |
| if(notIsContinuation) { |
| tertiary ^= caseSwitch; |
| } |
| |
| if(tertiary > 0) { |
| /* This is compression code. */ |
| /* sequence size check is included in the if clause */ |
| if (tertiary == tertiaryCommon && notIsContinuation) { |
| ++count3; |
| } else { |
| if(tertiary > tertiaryCommon && tertiaryCommon == UCOL_COMMON3_NORMAL) { |
| tertiary += tertiaryAddition; |
| } else if (tertiary <= tertiaryCommon && tertiaryCommon == UCOL_COMMON3_UPPERFIRST) { |
| tertiary -= tertiaryAddition; |
| } |
| if (count3 > 0) { |
| if ((tertiary > tertiaryCommon)) { |
| while (count3 > coll->tertiaryTopCount) { |
| *tertiaries++ = (uint8_t)(tertiaryTop - coll->tertiaryTopCount); |
| count3 -= (uint32_t)coll->tertiaryTopCount; |
| } |
| *tertiaries++ = (uint8_t)(tertiaryTop - (count3-1)); |
| } else { |
| while (count3 > coll->tertiaryBottomCount) { |
| *tertiaries++ = (uint8_t)(tertiaryBottom + coll->tertiaryBottomCount); |
| count3 -= (uint32_t)coll->tertiaryBottomCount; |
| } |
| *tertiaries++ = (uint8_t)(tertiaryBottom + (count3-1)); |
| } |
| count3 = 0; |
| } |
| *tertiaries++ = tertiary; |
| } |
| } |
| |
| if(primaries > primarySafeEnd) { /* We have stepped over the primary buffer */ |
| int32_t sks = sortKeySize+(primaries - primStart)+(secondaries - secStart)+(tertiaries - terStart); |
| if(allocateSKBuffer == FALSE) { /* need to save our butts if we cannot reallocate */ |
| resultOverflow = TRUE; |
| sortKeySize = ucol_getSortKeySize(coll, &s, sks, coll->strength, len); |
| *status = U_MEMORY_ALLOCATION_ERROR; |
| finished = TRUE; |
| break; |
| } else { /* It's much nicer if we can actually reallocate */ |
| primStart = reallocateBuffer(&primaries, *result, prim, &resultLength, 2*sks, status); |
| *result = primStart; |
| primarySafeEnd = primStart + resultLength - 2; |
| } |
| } |
| } |
| if(finished) { |
| break; |
| } else { |
| prevBuffSize = minBufferSize; |
| secStart = reallocateBuffer(&secondaries, secStart, second, &secSize, 2*secSize, status); |
| terStart = reallocateBuffer(&tertiaries, terStart, tert, &terSize, 2*terSize, status); |
| minBufferSize *= 2; |
| } |
| } |
| |
| if(U_SUCCESS(*status)) { |
| sortKeySize += (primaries - primStart); |
| /* we have done all the CE's, now let's put them together to form a key */ |
| if (count2 > 0) { |
| while (count2 > UCOL_BOT_COUNT2) { |
| *secondaries++ = (uint8_t)(UCOL_COMMON_BOT2 + UCOL_BOT_COUNT2); |
| count2 -= (uint32_t)UCOL_BOT_COUNT2; |
| } |
| *secondaries++ = (uint8_t)(UCOL_COMMON_BOT2 + (count2-1)); |
| } |
| uint32_t secsize = secondaries-secStart; |
| sortKeySize += secsize; |
| if(sortKeySize <= resultLength) { |
| *(primaries++) = UCOL_LEVELTERMINATOR; |
| uprv_memcpy(primaries, secStart, secsize); |
| primaries += secsize; |
| } else { |
| if(allocateSKBuffer == TRUE) { |
| primStart = reallocateBuffer(&primaries, *result, prim, &resultLength, 2*sortKeySize, status); |
| *result = primStart; |
| uprv_memcpy(primaries, secStart, secsize); |
| } else { |
| *status = U_MEMORY_ALLOCATION_ERROR; |
| } |
| } |
| |
| if (count3 > 0) { |
| if (coll->tertiaryCommon != UCOL_COMMON3_NORMAL) { |
| while (count3 >= coll->tertiaryTopCount) { |
| *tertiaries++ = (uint8_t)(tertiaryTop - coll->tertiaryTopCount); |
| count3 -= (uint32_t)coll->tertiaryTopCount; |
| } |
| *tertiaries++ = (uint8_t)(tertiaryTop - count3); |
| } else { |
| while (count3 > coll->tertiaryBottomCount) { |
| *tertiaries++ = (uint8_t)(tertiaryBottom + coll->tertiaryBottomCount); |
| count3 -= (uint32_t)coll->tertiaryBottomCount; |
| } |
| *tertiaries++ = (uint8_t)(tertiaryBottom + (count3-1)); |
| } |
| } |
| *(primaries++) = UCOL_LEVELTERMINATOR; |
| uint32_t tersize = tertiaries - terStart; |
| sortKeySize += tersize; |
| if(sortKeySize <= resultLength) { |
| uprv_memcpy(primaries, terStart, tersize); |
| primaries += tersize; |
| } else { |
| if(allocateSKBuffer == TRUE) { |
| primStart = reallocateBuffer(&primaries, *result, prim, &resultLength, 2*sortKeySize, status); |
| *result = primStart; |
| uprv_memcpy(primaries, terStart, tersize); |
| } else { |
| *status = U_MEMORY_ALLOCATION_ERROR; |
| } |
| } |
| |
| *(primaries++) = '\0'; |
| } |
| |
| if(terStart != tert) { |
| uprv_free(terStart); |
| uprv_free(secStart); |
| } |
| |
| if(normSource != normBuffer) { |
| uprv_free(normSource); |
| } |
| |
| if(allocateSKBuffer == TRUE) { |
| *result = (uint8_t*)uprv_malloc(sortKeySize); |
| uprv_memcpy(*result, primStart, sortKeySize); |
| if(primStart != prim) { |
| uprv_free(primStart); |
| } |
| } |
| |
| return sortKeySize; |
| } |
| |
| static |
| inline void uprv_appendByteToHexString(char *dst, uint8_t val) { |
| uint32_t len = (uint32_t)uprv_strlen(dst); |
| *(dst+len) = T_CString_itosOffset((val >> 4)); |
| *(dst+len+1) = T_CString_itosOffset((val & 0xF)); |
| *(dst+len+2) = 0; |
| } |
| |
| /* this function makes a string with representation of a sortkey */ |
| U_CAPI char* U_EXPORT2 ucol_sortKeyToString(const UCollator *coll, const uint8_t *sortkey, char *buffer, uint32_t *len) { |
| int32_t strength = UCOL_PRIMARY; |
| uint32_t res_size = 0; |
| UBool doneCase = FALSE; |
| |
| char *current = buffer; |
| const uint8_t *currentSk = sortkey; |
| |
| uprv_strcpy(current, "["); |
| |
| while(strength <= UCOL_QUATERNARY && strength <= coll->strength) { |
| if(strength > UCOL_PRIMARY) { |
| strcat(current, " . "); |
| } |
| while(*currentSk != 0x01 && *currentSk != 0x00) { /* print a level */ |
| uprv_appendByteToHexString(current, *currentSk++); |
| uprv_strcat(current, " "); |
| } |
| if(coll->caseLevel == UCOL_ON && strength == UCOL_SECONDARY && doneCase == FALSE) { |
| doneCase = TRUE; |
| } else if(coll->caseLevel == UCOL_OFF || doneCase == TRUE || strength != UCOL_SECONDARY) { |
| strength ++; |
| } |
| uprv_appendByteToHexString(current, *currentSk++); /* This should print '01' */ |
| if(strength == UCOL_QUATERNARY && coll->alternateHandling == UCOL_NON_IGNORABLE) { |
| break; |
| } |
| } |
| |
| if(coll->strength == UCOL_IDENTICAL) { |
| uprv_strcat(current, " . "); |
| while(*currentSk != 0) { |
| uprv_appendByteToHexString(current, *currentSk++); |
| uprv_strcat(current, " "); |
| } |
| |
| uprv_appendByteToHexString(current, *currentSk++); |
| } |
| uprv_strcat(current, "]"); |
| |
| if(res_size > *len) { |
| return NULL; |
| } |
| |
| return buffer; |
| } |
| |
| |
| /****************************************************************************/ |
| /* Following are the functions that deal with the properties of a collator */ |
| /* there are new APIs and some compatibility APIs */ |
| /****************************************************************************/ |
| void ucol_updateInternalState(UCollator *coll) { |
| if(coll->caseFirst == UCOL_UPPER_FIRST) { |
| coll->caseSwitch = UCOL_CASE_SWITCH; |
| } else { |
| coll->caseSwitch = UCOL_NO_CASE_SWITCH; |
| } |
| |
| if(coll->caseLevel == UCOL_ON || coll->caseFirst == UCOL_OFF) { |
| coll->tertiaryMask = UCOL_REMOVE_CASE; |
| coll->tertiaryCommon = UCOL_COMMON3_NORMAL; |
| coll->tertiaryAddition = UCOL_FLAG_BIT_MASK_CASE_SW_OFF; |
| coll->tertiaryTop = UCOL_COMMON_TOP3_CASE_SW_OFF; |
| coll->tertiaryBottom = UCOL_COMMON_BOT3; |
| } else { |
| coll->tertiaryMask = UCOL_KEEP_CASE; |
| coll->tertiaryAddition = UCOL_FLAG_BIT_MASK_CASE_SW_ON; |
| if(coll->caseFirst == UCOL_UPPER_FIRST) { |
| coll->tertiaryCommon = UCOL_COMMON3_UPPERFIRST; |
| coll->tertiaryTop = UCOL_COMMON_TOP3_CASE_SW_UPPER; |
| coll->tertiaryBottom = UCOL_COMMON_BOTTOM3_CASE_SW_UPPER; |
| } else { |
| coll->tertiaryCommon = UCOL_COMMON3_NORMAL; |
| coll->tertiaryTop = UCOL_COMMON_TOP3_CASE_SW_LOWER; |
| coll->tertiaryBottom = UCOL_COMMON_BOTTOM3_CASE_SW_LOWER; |
| } |
| } |
| |
| /* Set the compression values */ |
| uint8_t tertiaryTotal = (uint8_t)(coll->tertiaryTop - UCOL_COMMON_BOT3-1); |
| coll->tertiaryTopCount = (uint8_t)(UCOL_PROPORTION3*tertiaryTotal); /* we multilply double with int, but need only int */ |
| coll->tertiaryBottomCount = (uint8_t)(tertiaryTotal - coll->tertiaryTopCount); |
| |
| if(coll->caseLevel == UCOL_OFF && coll->strength == UCOL_TERTIARY |
| && coll->frenchCollation == UCOL_OFF && coll->alternateHandling == UCOL_NON_IGNORABLE) { |
| coll->sortKeyGen = ucol_calcSortKeySimpleTertiary; |
| } else { |
| coll->sortKeyGen = ucol_calcSortKey; |
| } |
| |
| } |
| |
| U_CAPI uint32_t U_EXPORT2 |
| ucol_setVariableTop(UCollator *coll, const UChar *varTop, int32_t len, UErrorCode *status) { |
| if(U_FAILURE(*status) || coll == NULL) { |
| return 0; |
| } |
| if(len == -1) { |
| len = u_strlen(varTop); |
| } |
| if(len == 0) { |
| *status = U_ILLEGAL_ARGUMENT_ERROR; |
| return 0; |
| } |
| |
| collIterate s; |
| IInit_collIterate(coll, varTop, len, &s); |
| |
| uint32_t CE = ucol_IGetNextCE(coll, &s, status); |
| |
| if(s.pos != s.endp) { |
| *status = U_CE_NOT_FOUND_ERROR; |
| return 0; |
| } |
| |
| uint32_t nextCE = ucol_IGetNextCE(coll, &s, status); |
| |
| if(isContinuation(nextCE) && (nextCE & UCOL_PRIMARYMASK) != 0) { |
| *status = U_PRIMARY_TOO_LONG_ERROR; |
| return 0; |
| } |
| |
| coll->variableTopValue = (CE & UCOL_PRIMARYMASK)>>16; |
| |
| return CE & UCOL_PRIMARYMASK; |
| } |
| |
| U_CAPI uint32_t ucol_getVariableTop(const UCollator *coll, UErrorCode *status) { |
| if(U_FAILURE(*status) || coll == NULL) { |
| return 0; |
| } |
| return coll->variableTopValue<<16; |
| } |
| |
| U_CAPI void U_EXPORT2 |
| ucol_restoreVariableTop(UCollator *coll, const uint32_t varTop, UErrorCode *status) { |
| if(U_FAILURE(*status) || coll == NULL) { |
| return; |
| } |
| coll->variableTopValue = (varTop & UCOL_PRIMARYMASK)>>16; |
| } |
| /* Attribute setter API */ |
| U_CAPI void U_EXPORT2 |
| ucol_setAttribute(UCollator *coll, UColAttribute attr, UColAttributeValue value, UErrorCode *status) { |
| if(U_FAILURE(*status) || coll == NULL) { |
| return; |
| } |
| switch(attr) { |
| case UCOL_HIRAGANA_QUATERNARY_MODE: /* special quaternary values for Hiragana */ |
| if(value == UCOL_ON) { |
| coll->hiraganaQ = UCOL_ON; |
| coll->hiraganaQisDefault = FALSE; |
| } else if (value == UCOL_OFF) { |
| coll->hiraganaQ = UCOL_OFF; |
| coll->hiraganaQisDefault = FALSE; |
| } else if (value == UCOL_DEFAULT) { |
| coll->hiraganaQisDefault = TRUE; |
| coll->hiraganaQ = coll->options->hiraganaQ; |
| } else { |
| *status = U_ILLEGAL_ARGUMENT_ERROR; |
| } |
| break; |
| case UCOL_FRENCH_COLLATION: /* attribute for direction of secondary weights*/ |
| if(value == UCOL_ON) { |
| coll->frenchCollation = UCOL_ON; |
| coll->frenchCollationisDefault = FALSE; |
| } else if (value == UCOL_OFF) { |
| coll->frenchCollation = UCOL_OFF; |
| coll->frenchCollationisDefault = FALSE; |
| } else if (value == UCOL_DEFAULT) { |
| coll->frenchCollationisDefault = TRUE; |
| coll->frenchCollation = coll->options->frenchCollation; |
| } else { |
| *status = U_ILLEGAL_ARGUMENT_ERROR ; |
| } |
| break; |
| case UCOL_ALTERNATE_HANDLING: /* attribute for handling variable elements*/ |
| if(value == UCOL_SHIFTED) { |
| coll->alternateHandling = UCOL_SHIFTED; |
| coll->alternateHandlingisDefault = FALSE; |
| } else if (value == UCOL_NON_IGNORABLE) { |
| coll->alternateHandling = UCOL_NON_IGNORABLE; |
| coll->alternateHandlingisDefault = FALSE; |
| } else if (value == UCOL_DEFAULT) { |
| coll->alternateHandlingisDefault = TRUE; |
| coll->alternateHandling = coll->options->alternateHandling ; |
| } else { |
| *status = U_ILLEGAL_ARGUMENT_ERROR ; |
| } |
| break; |
| case UCOL_CASE_FIRST: /* who goes first, lower case or uppercase */ |
| if(value == UCOL_LOWER_FIRST) { |
| coll->caseFirst = UCOL_LOWER_FIRST; |
| coll->caseFirstisDefault = FALSE; |
| } else if (value == UCOL_UPPER_FIRST) { |
| coll->caseFirst = UCOL_UPPER_FIRST; |
| coll->caseFirstisDefault = FALSE; |
| } else if (value == UCOL_OFF) { |
| coll->caseFirst = UCOL_OFF; |
| coll->caseFirstisDefault = FALSE; |
| } else if (value == UCOL_DEFAULT) { |
| coll->caseFirst = coll->options->caseFirst; |
| coll->caseFirstisDefault = TRUE; |
| } else { |
| *status = U_ILLEGAL_ARGUMENT_ERROR ; |
| } |
| break; |
| case UCOL_CASE_LEVEL: /* do we have an extra case level */ |
| if(value == UCOL_ON) { |
| coll->caseLevel = UCOL_ON; |
| coll->caseLevelisDefault = FALSE; |
| } else if (value == UCOL_OFF) { |
| coll->caseLevel = UCOL_OFF; |
| coll->caseLevelisDefault = FALSE; |
| } else if (value == UCOL_DEFAULT) { |
| coll->caseLevel = coll->options->caseLevel; |
| coll->caseLevelisDefault = TRUE; |
| } else { |
| *status = U_ILLEGAL_ARGUMENT_ERROR ; |
| } |
| break; |
| case UCOL_NORMALIZATION_MODE: /* attribute for normalization */ |
| if(value == UCOL_ON) { |
| coll->normalizationMode = UCOL_ON; |
| coll->normalizationModeisDefault = FALSE; |
| } else if (value == UCOL_OFF) { |
| coll->normalizationMode = UCOL_OFF; |
| coll->normalizationModeisDefault = FALSE; |
| } else if (value == UCOL_ON_WITHOUT_HANGUL) { |
| coll->normalizationMode = UCOL_ON_WITHOUT_HANGUL ; |
| coll->normalizationModeisDefault = FALSE; |
| } else if (value == UCOL_DEFAULT) { |
| coll->normalizationModeisDefault = TRUE; |
| coll->normalizationMode = coll->options->normalizationMode; |
| } else { |
| *status = U_ILLEGAL_ARGUMENT_ERROR ; |
| } |
| break; |
| case UCOL_STRENGTH: /* attribute for strength */ |
| if (value == UCOL_DEFAULT) { |
| coll->strengthisDefault = TRUE; |
| coll->strength = coll->options->strength; |
| } else if (value <= UCOL_IDENTICAL) { |
| coll->strengthisDefault = FALSE; |
| coll->strength = value; |
| } else { |
| *status = U_ILLEGAL_ARGUMENT_ERROR ; |
| } |
| break; |
| case UCOL_ATTRIBUTE_COUNT: |
| default: |
| *status = U_ILLEGAL_ARGUMENT_ERROR; |
| break; |
| } |
| ucol_updateInternalState(coll); |
| } |
| |
| U_CAPI UColAttributeValue U_EXPORT2 |
| ucol_getAttribute(const UCollator *coll, UColAttribute attr, UErrorCode *status) { |
| if(U_FAILURE(*status) || coll == NULL) { |
| return UCOL_DEFAULT; |
| } |
| switch(attr) { |
| case UCOL_HIRAGANA_QUATERNARY_MODE: |
| return coll->hiraganaQ; |
| case UCOL_FRENCH_COLLATION: /* attribute for direction of secondary weights*/ |
| return coll->frenchCollation; |
| case UCOL_ALTERNATE_HANDLING: /* attribute for handling variable elements*/ |
| return coll->alternateHandling; |
| case UCOL_CASE_FIRST: /* who goes first, lower case or uppercase */ |
| return coll->caseFirst; |
| case UCOL_CASE_LEVEL: /* do we have an extra case level */ |
| return coll->caseLevel; |
| case UCOL_NORMALIZATION_MODE: /* attribute for normalization */ |
| return coll->normalizationMode; |
| case UCOL_STRENGTH: /* attribute for strength */ |
| return coll->strength; |
| case UCOL_ATTRIBUTE_COUNT: |
| default: |
| *status = U_ILLEGAL_ARGUMENT_ERROR; |
| break; |
| } |
| return UCOL_DEFAULT; |
| } |
| |
| // deprecated |
| U_CAPI void U_EXPORT2 |
| ucol_setNormalization( UCollator *coll, |
| UNormalizationMode mode) |
| { |
| UErrorCode status = U_ZERO_ERROR; |
| switch(mode) { |
| case UNORM_NONE: |
| ucol_setAttribute(coll, UCOL_NORMALIZATION_MODE, UCOL_OFF, &status); |
| break; |
| case UNORM_NFD: |
| ucol_setAttribute(coll, UCOL_NORMALIZATION_MODE, UCOL_ON, &status); |
| break; |
| default: |
| /* Shouldn't get here. */ |
| /* This is quite a bad API */ |
| /* *status = U_ILLEGAL_ARGUMENT_ERROR; */ |
| return; |
| } |
| } |
| |
| // deprecated |
| U_CAPI UNormalizationMode U_EXPORT2 |
| ucol_getNormalization(const UCollator* coll) |
| { |
| UErrorCode status = U_ZERO_ERROR; |
| if(ucol_getAttribute(coll, UCOL_NORMALIZATION_MODE, &status) == UCOL_ON) { |
| return UNORM_NFD; |
| } else { |
| return UNORM_NONE; |
| } |
| } |
| |
| U_CAPI void U_EXPORT2 |
| ucol_setStrength( UCollator *coll, |
| UCollationStrength strength) |
| { |
| UErrorCode status = U_ZERO_ERROR; |
| ucol_setAttribute(coll, UCOL_STRENGTH, strength, &status); |
| } |
| |
| U_CAPI UCollationStrength U_EXPORT2 |
| ucol_getStrength(const UCollator *coll) |
| { |
| UErrorCode status = U_ZERO_ERROR; |
| return ucol_getAttribute(coll, UCOL_STRENGTH, &status); |
| } |
| |
| /****************************************************************************/ |
| /* Following are misc functions */ |
| /* there are new APIs and some compatibility APIs */ |
| /****************************************************************************/ |
| |
| U_CAPI UCollator* U_EXPORT2 |
| ucol_safeClone(const UCollator *coll, void *stackBuffer, int32_t * pBufferSize, UErrorCode *status) |
| { |
| UCollator * localCollator; |
| int32_t bufferSizeNeeded = (int32_t)sizeof(UCollator); |
| char *stackBufferChars = (char *)stackBuffer; |
| |
| if (status == NULL || U_FAILURE(*status)){ |
| return 0; |
| } |
| if (!pBufferSize || !coll){ |
| *status = U_ILLEGAL_ARGUMENT_ERROR; |
| return 0; |
| } |
| /* Pointers on 64-bit platforms need to be aligned |
| * on a 64-bit boundry in memory. |
| */ |
| if (U_ALIGNMENT_OFFSET(stackBuffer) != 0) { |
| int32_t offsetUp = (int32_t)U_ALIGNMENT_OFFSET_UP(stackBufferChars); |
| *pBufferSize -= offsetUp; |
| stackBufferChars += offsetUp; |
| } |
| stackBuffer = (void *)stackBufferChars; |
| |
| if (*pBufferSize <= 0){ /* 'preflighting' request - set needed size into *pBufferSize */ |
| *pBufferSize = bufferSizeNeeded; |
| return 0; |
| } |
| if (*pBufferSize < bufferSizeNeeded || stackBuffer == NULL) { |
| /* allocate one here...*/ |
| int32_t length; |
| const UChar * rules = ucol_getRules(coll, &length); |
| |
| localCollator = ucol_openRules(rules, |
| length, |
| ucol_getAttribute(coll, UCOL_NORMALIZATION_MODE, status), |
| ucol_getStrength(coll), |
| NULL, |
| status); |
| if (U_SUCCESS(*status)) |
| { |
| *status = U_SAFECLONE_ALLOCATED_ERROR; |
| } |
| } else { |
| localCollator = (UCollator *)stackBuffer; |
| memcpy(localCollator, coll, sizeof(UCollator)); |
| localCollator->freeOnClose = FALSE; |
| } |
| return localCollator; |
| } |
| |
| U_CAPI int32_t U_EXPORT2 |
| ucol_getRulesEx(const UCollator *coll, UColRuleOption delta, UChar *buffer, int32_t bufferLen) { |
| UErrorCode status = U_ZERO_ERROR; |
| int32_t len = 0; |
| int32_t UCAlen = 0; |
| const UChar* ucaRules = 0; |
| const UChar *rules = ucol_getRules(coll, &len); |
| if(delta == UCOL_FULL_RULES) { |
| /* take the UCA rules and append real rules at the end */ |
| /* UCA rules will be probably coming from the root RB */ |
| ucaRules = ures_getStringByKey(coll->rb,"%%UCARULES",&UCAlen,&status); |
| } |
| if(U_FAILURE(status)) { |
| return 0; |
| } |
| if(buffer!=0 && bufferLen>0){ |
| *buffer=0; |
| if(UCAlen > 0) { |
| u_memcpy(buffer, ucaRules, uprv_min(UCAlen, bufferLen)); |
| } |
| if(len > 0 && bufferLen > UCAlen) { |
| u_memcpy(buffer+UCAlen, rules, uprv_min(len, bufferLen-UCAlen)); |
| } |
| } |
| return u_terminateUChars(buffer, bufferLen, len+UCAlen, &status); |
| } |
| |
| static const UChar _NUL = 0; |
| |
| U_CAPI const UChar* U_EXPORT2 |
| ucol_getRules( const UCollator *coll, |
| int32_t *length) |
| { |
| if(coll->rules != NULL) { |
| *length = coll->rulesLength; |
| return coll->rules; |
| } else { |
| UErrorCode status = U_ZERO_ERROR; |
| if(coll->rb != NULL) { |
| UResourceBundle *collElem = ures_getByKey(coll->rb, "CollationElements", NULL, &status); |
| if(U_SUCCESS(status)) { |
| /*Semantic const */ |
| ((UCollator *)coll)->rules = ures_getStringByKey(collElem, "Sequence", length, &status); |
| ((UCollator *)coll)->rulesLength = *length; |
| ((UCollator *)coll)->freeRulesOnClose = FALSE; |
| ures_close(collElem); |
| return coll->rules; |
| } |
| } |
| *length = 0; |
| return &_NUL; |
| } |
| } |
| |
| U_CAPI int32_t U_EXPORT2 |
| ucol_getDisplayName( const char *objLoc, |
| const char *dispLoc, |
| UChar *result, |
| int32_t resultLength, |
| UErrorCode *status) |
| { |
| |
| if(U_FAILURE(*status)) return -1; |
| UnicodeString dst(result, resultLength, resultLength); |
| Collator::getDisplayName(Locale(objLoc), Locale(dispLoc), dst); |
| return dst.extract(result, resultLength, *status); |
| } |
| |
| U_CAPI const char* U_EXPORT2 |
| ucol_getAvailable(int32_t index) |
| { |
| return uloc_getAvailable(index); |
| } |
| |
| U_CAPI int32_t U_EXPORT2 |
| ucol_countAvailable() |
| { |
| return uloc_countAvailable(); |
| } |
| |
| U_CAPI void U_EXPORT2 |
| ucol_getVersion(const UCollator* coll, |
| UVersionInfo versionInfo) |
| { |
| /* RunTime version */ |
| uint8_t rtVersion = UCOL_RUNTIME_VERSION; |
| /* Builder version*/ |
| uint8_t bdVersion = coll->dataInfo.dataVersion[0]; |
| |
| /* Charset Version. Need to get the version from cnv files |
| * makeconv should populate cnv files with version and |
| * an api has to be provided in ucnv.h to obtain this version |
| */ |
| uint8_t csVersion = 0; |
| |
| /* combine the version info */ |
| uint16_t cmbVersion = (uint16_t)((rtVersion<<11) | (bdVersion<<6) | (csVersion)); |
| |
| /* Tailoring rules */ |
| versionInfo[0] = (uint8_t)(cmbVersion>>8); |
| versionInfo[1] = (uint8_t)cmbVersion; |
| versionInfo[2] = coll->dataInfo.dataVersion[1]; |
| versionInfo[3] = UCA->dataInfo.dataVersion[1]; |
| } |
| |
| |
| /* This internal API checks whether a character is tailored or not */ |
| U_CAPI UBool U_EXPORT2 |
| isTailored(const UCollator *coll, const UChar u, UErrorCode *status) { |
| uint32_t CE = UCOL_NOT_FOUND; |
| const UChar *ContractionStart = NULL; |
| if(U_SUCCESS(*status) && coll != NULL) { |
| if(coll == UCA) { |
| return FALSE; |
| } else if(u < 0x100) { /* latin-1 */ |
| CE = coll->latinOneMapping[u]; |
| if(CE == UCA->latinOneMapping[u]) { |
| return FALSE; |
| } |
| } else { /* regular */ |
| CE = ucmpe32_get(coll->mapping, u); |
| } |
| |
| if(isContraction(CE)) { |
| ContractionStart = (UChar *)coll->image+getContractOffset(CE); |
| CE = *(coll->contractionCEs + (ContractionStart- coll->contractionIndex)); |
| } |
| |
| if(CE == UCOL_NOT_FOUND) { |
| return FALSE; |
| } else { |
| return TRUE; |
| } |
| } else { |
| return FALSE; |
| } |
| } |
| |
| |
| /****************************************************************************/ |
| /* Following are the string compare functions */ |
| /* */ |
| /****************************************************************************/ |
| |
| |
| /* ucol_checkIdent internal function. Does byte level string compare. */ |
| /* Used by strcoll if strength == identical and strings */ |
| /* are otherwise equal. Moved out-of-line because this */ |
| /* is a rare case. */ |
| /* */ |
| /* Comparison must be done on NFD normalized strings. */ |
| /* FCD is not good enough. */ |
| /* */ |
| /* TODO: make an incremental NFD Comparison function, which could */ |
| /* be of general use */ |
| |
| static |
| UCollationResult ucol_checkIdent(collIterate *sColl, collIterate *tColl, UBool normalize) |
| { |
| int32_t comparison; |
| int32_t sLen = (sColl->flags & UCOL_ITER_HASLEN) ? sColl->endp - sColl->string : -1; |
| UChar *sBuf = sColl->string; |
| |
| int32_t tLen = (tColl->flags & UCOL_ITER_HASLEN) ? tColl->endp - tColl->string : -1; |
| UChar *tBuf = tColl->string; |
| |
| if (normalize) { |
| UErrorCode status; |
| |
| status = U_ZERO_ERROR; |
| if (unorm_quickCheck(sColl->string, sLen, UNORM_NFD, &status) != UNORM_YES) { |
| sLen = unorm_decompose(sColl->writableBuffer, (int32_t)sColl->writableBufSize, |
| sBuf, sLen, |
| FALSE, FALSE, |
| &status); |
| if(status == U_BUFFER_OVERFLOW_ERROR) { |
| if(!u_growBufferFromStatic(sColl->stackWritableBuffer, |
| &sColl->writableBuffer, |
| (int32_t *)&sColl->writableBufSize, sLen, |
| 0) |
| ) { |
| return UCOL_LESS; /* TODO set *status = U_MEMORY_ALLOCATION_ERROR; */ |
| } |
| status = U_ZERO_ERROR; |
| sLen = unorm_decompose(sColl->writableBuffer, (int32_t)sColl->writableBufSize, |
| sBuf, sLen, |
| FALSE, FALSE, |
| &status); |
| } |
| sBuf = sColl->writableBuffer; |
| if (sBuf != sColl->stackWritableBuffer) { |
| sColl->flags |= UCOL_ITER_ALLOCATED; |
| } |
| } |
| |
| status = U_ZERO_ERROR; |
| if (unorm_quickCheck(tColl->string, tLen, UNORM_NFD, &status) != UNORM_YES) { |
| tLen = unorm_decompose(tColl->writableBuffer, (int32_t)tColl->writableBufSize, |
| tBuf, tLen, |
| FALSE, FALSE, |
| &status); |
| if(status == U_BUFFER_OVERFLOW_ERROR) { |
| if(!u_growBufferFromStatic(tColl->stackWritableBuffer, |
| &tColl->writableBuffer, |
| (int32_t *)&tColl->writableBufSize, tLen, |
| 0) |
| ) { |
| return UCOL_LESS; /* TODO set *status = U_MEMORY_ALLOCATION_ERROR; */ |
| } |
| status = U_ZERO_ERROR; |
| tLen = unorm_decompose(tColl->writableBuffer, (int32_t)tColl->writableBufSize, |
| tBuf, tLen, |
| FALSE, FALSE, |
| &status); |
| } |
| tBuf = tColl->writableBuffer; |
| if (tBuf != tColl->stackWritableBuffer) { |
| tColl->flags |= UCOL_ITER_ALLOCATED; |
| } |
| } |
| } |
| |
| if (sLen == -1 && tLen == -1) { |
| comparison = u_strcmpCodePointOrder(sBuf, tBuf); |
| } else { |
| if (sLen == -1) { |
| sLen = u_strlen(sBuf); |
| } |
| if (tLen == -1) { |
| tLen = u_strlen(tBuf); |
| } |
| comparison = u_memcmpCodePointOrder(sBuf, tBuf, uprv_min(sLen, tLen)); |
| if (comparison == 0) { |
| comparison = sLen - tLen; |
| } |
| } |
| |
| if (comparison < 0) { |
| return UCOL_LESS; |
| } else if (comparison == 0) { |
| return UCOL_EQUAL; |
| } else /* comparison > 0 */ { |
| return UCOL_GREATER; |
| } |
| } |
| |
| /* CEBuf - A struct and some inline functions to handle the saving */ |
| /* of CEs in a buffer within ucol_strcoll */ |
| |
| #define UCOL_CEBUF_SIZE 512 |
| typedef struct ucol_CEBuf { |
| uint32_t *buf; |
| uint32_t *endp; |
| uint32_t *pos; |
| uint32_t localArray[UCOL_CEBUF_SIZE]; |
| } ucol_CEBuf; |
| |
| |
| static |
| inline void UCOL_INIT_CEBUF(ucol_CEBuf *b) { |
| (b)->buf = (b)->pos = (b)->localArray; |
| (b)->endp = (b)->buf + UCOL_CEBUF_SIZE; |
| }; |
| |
| static |
| void ucol_CEBuf_Expand(ucol_CEBuf *b, collIterate *ci) { |
| uint32_t oldSize; |
| uint32_t newSize; |
| uint32_t *newBuf; |
| |
| ci->flags |= UCOL_ITER_ALLOCATED; |
| oldSize = b->pos - b->buf; |
| newSize = oldSize * 2; |
| newBuf = (uint32_t *)uprv_malloc(newSize * sizeof(uint32_t)); |
| uprv_memcpy(newBuf, b->buf, oldSize * sizeof(uint32_t)); |
| if (b->buf != b->localArray) { |
| uprv_free(b->buf); |
| } |
| b->buf = newBuf; |
| b->endp = b->buf + newSize; |
| b->pos = b->buf + oldSize; |
| } |
| |
| static |
| inline void UCOL_CEBUF_PUT(ucol_CEBuf *b, uint32_t ce, collIterate *ci) { |
| if (b->pos == b->endp) { |
| ucol_CEBuf_Expand(b, ci); |
| } |
| *(b)->pos++ = ce; |
| }; |
| |
| /* This is a trick string compare function that goes in and uses sortkeys to compare */ |
| /* It is used when compare gets in trouble and needs to bail out */ |
| static UCollationResult ucol_compareUsingSortKeys(const UCollator *coll, |
| const UChar *source, |
| int32_t sourceLength, |
| const UChar *target, |
| int32_t targetLength) |
| { |
| uint8_t sourceKey[UCOL_MAX_BUFFER], targetKey[UCOL_MAX_BUFFER]; |
| uint8_t *sourceKeyP = sourceKey; |
| uint8_t *targetKeyP = targetKey; |
| int32_t sourceKeyLen = UCOL_MAX_BUFFER, targetKeyLen = UCOL_MAX_BUFFER; |
| |
| sourceKeyLen = ucol_getSortKey(coll, source, sourceLength, sourceKeyP, sourceKeyLen); |
| if(sourceKeyLen > UCOL_MAX_BUFFER) { |
| sourceKeyP = (uint8_t*)uprv_malloc(sourceKeyLen*sizeof(uint8_t)); |
| sourceKeyLen = ucol_getSortKey(coll, source, sourceLength, sourceKeyP, sourceKeyLen); |
| } |
| |
| targetKeyLen = ucol_getSortKey(coll, target, targetLength, targetKeyP, targetKeyLen); |
| if(targetKeyLen > UCOL_MAX_BUFFER) { |
| targetKeyP = (uint8_t*)uprv_malloc(targetKeyLen*sizeof(uint8_t)); |
| targetKeyLen = ucol_getSortKey(coll, target, targetLength, targetKeyP, targetKeyLen); |
| } |
| |
| int32_t result = uprv_strcmp((const char*)sourceKeyP, (const char*)targetKeyP); |
| |
| if(sourceKeyP != sourceKey) { |
| uprv_free(sourceKeyP); |
| } |
| |
| if(targetKeyP != targetKey) { |
| uprv_free(targetKeyP); |
| } |
| |
| if(result<0) { |
| return UCOL_LESS; |
| } else if(result>0) { |
| return UCOL_GREATER; |
| } else { |
| return UCOL_EQUAL; |
| } |
| } |
| |
| |
| /* */ |
| /* ucol_strcoll Main public API string comparison function */ |
| /* */ |
| U_CAPI UCollationResult U_EXPORT2 |
| ucol_strcoll( const UCollator *coll, |
| const UChar *source, |
| int32_t sourceLength, |
| const UChar *target, |
| int32_t targetLength) |
| { |
| U_ALIGN_CODE(16); |
| |
| /* Scan the strings. Find: */ |
| /* The length of any leading portion that is equal */ |
| /* Whether they are exactly equal. (in which case we just return) */ |
| const UChar *pSrc = source; |
| const UChar *pTarg = target; |
| int32_t equalLength; |
| |
| if (sourceLength == -1 && targetLength == -1) { |
| // Both strings are null terminated. |
| // Check for them being the same string, and scan through |
| // any leading equal portion. |
| if (source==target) { |
| return UCOL_EQUAL; |
| } |
| |
| for (;;) { |
| if ( *pSrc != *pTarg || *pSrc == 0) { |
| break; |
| } |
| pSrc++; |
| pTarg++; |
| } |
| if (*pSrc == 0 && *pTarg == 0) { |
| return UCOL_EQUAL; |
| } |
| equalLength = pSrc - source; |
| } |
| else |
| { |
| // One or both strings has an explicit length. |
| /* check if source and target are same strings */ |
| |
| if (source==target && sourceLength==targetLength) { |
| return UCOL_EQUAL; |
| } |
| const UChar *pSrcEnd = source + sourceLength; |
| const UChar *pTargEnd = target + targetLength; |
| |
| |
| // Scan while the strings are bitwise ==, or until one is exhausted. |
| for (;;) { |
| if (pSrc == pSrcEnd || pTarg == pTargEnd) { |
| break; |
| } |
| if ((*pSrc == 0 && sourceLength == -1) || (*pTarg == 0 && targetLength == -1)) { |
| break; |
| } |
| if (*pSrc != *pTarg) { |
| break; |
| } |
| pSrc++; |
| pTarg++; |
| } |
| equalLength = pSrc - source; |
| |
| // If we made it all the way through both strings, we are done. They are == |
| if ((pSrc ==pSrcEnd || (pSrcEnd <pSrc && *pSrc==0)) && /* At end of src string, however it was specified. */ |
| (pTarg==pTargEnd || (pTargEnd<pTarg && *pTarg==0))) { /* and also at end of dest string */ |
| return UCOL_EQUAL; |
| } |
| } |
| if (equalLength > 0) { |
| /* There is an identical portion at the beginning of the two strings. */ |
| /* If the identical portion ends within a contraction or a comibining */ |
| /* character sequence, back up to the start of that sequence. */ |
| /* |
| if (equalLength < sourceLength) { |
| while (UTF_IS_TRAIL(source + equalLength)) { |
| --equalLength; |
| } |
| */ |
| pSrc = source + equalLength; /* point to the first differing chars */ |
| pTarg = target + equalLength; |
| if (pSrc != source+sourceLength && ucol_unsafeCP(*pSrc, coll) || |
| pTarg != target+targetLength && ucol_unsafeCP(*pTarg, coll)) |
| { |
| // We are stopped in the middle of a contraction. |
| // Scan backwards through the == part of the string looking for the start of the contraction. |
| // It doesn't matter which string we scan, since they are the same in this region. |
| do |
| { |
| equalLength--; |
| pSrc--; |
| } |
| while (equalLength>0 && ucol_unsafeCP(*pSrc, coll)); |
| } |
| |
| source += equalLength; |
| target += equalLength; |
| if (sourceLength > 0) { |
| sourceLength -= equalLength; |
| } |
| if (targetLength > 0) { |
| targetLength -= equalLength; |
| } |
| } |
| |
| |
| // setting up the collator parameters |
| UColAttributeValue strength = coll->strength; |
| UBool initialCheckSecTer = (strength >= UCOL_SECONDARY); |
| |
| UBool checkSecTer = initialCheckSecTer; |
| UBool checkTertiary = (strength >= UCOL_TERTIARY); |
| UBool checkQuad = (strength >= UCOL_QUATERNARY); |
| UBool checkIdent = (strength == UCOL_IDENTICAL); |
| UBool checkCase = (coll->caseLevel == UCOL_ON); |
| UBool isFrenchSec = (coll->frenchCollation == UCOL_ON) && checkSecTer; |
| UBool shifted = (coll->alternateHandling == UCOL_SHIFTED); |
| UBool qShifted = shifted && checkQuad; |
| UBool doHiragana = (coll->hiraganaQ == UCOL_ON) && checkQuad; |
| |
| if(doHiragana && shifted) { |
| return (ucol_compareUsingSortKeys(coll, source, sourceLength, target, targetLength)); |
| } |
| uint8_t caseSwitch = coll->caseSwitch; |
| uint8_t tertiaryMask = coll->tertiaryMask; |
| |
| // This is the lowest primary value that will not be ignored if shifted |
| uint32_t LVT = (shifted)?(coll->variableTopValue<<16):0; |
| |
| UCollationResult result = UCOL_EQUAL; |
| UCollationResult hirResult = UCOL_EQUAL; |
| UErrorCode status = U_ZERO_ERROR; |
| |
| // Preparing the context objects for iterating over strings |
| collIterate sColl, tColl; |
| |
| IInit_collIterate(coll, source, sourceLength, &sColl); |
| IInit_collIterate(coll, target, targetLength, &tColl); |
| |
| // Preparing the CE buffers. They will be filled during the primary phase |
| ucol_CEBuf sCEs; |
| ucol_CEBuf tCEs; |
| UCOL_INIT_CEBUF(&sCEs); |
| UCOL_INIT_CEBUF(&tCEs); |
| |
| uint32_t secS = 0, secT = 0; |
| uint32_t sOrder=0, tOrder=0; |
| |
| // Non shifted primary processing is quite simple |
| if(!shifted) { |
| for(;;) { |
| |
| // We fetch CEs until we hit a non ignorable primary or end. |
| do { |
| // We get the next CE |
| sOrder = ucol_IGetNextCE(coll, &sColl, &status); |
| // Stuff it in the buffer |
| UCOL_CEBUF_PUT(&sCEs, sOrder, &sColl); |
| // And keep just the primary part. |
| sOrder &= UCOL_PRIMARYMASK; |
| } while(sOrder == 0); |
| |
| // see the comments on the above block |
| do { |
| tOrder = ucol_IGetNextCE(coll, &tColl, &status); |
| UCOL_CEBUF_PUT(&tCEs, tOrder, &tColl); |
| tOrder &= UCOL_PRIMARYMASK; |
| } while(tOrder == 0); |
| |
| // if both primaries are the same |
| if(sOrder == tOrder) { |
| // and there are no more CEs, we advance to the next level |
| if(sOrder == UCOL_NO_MORE_CES_PRIMARY) { |
| break; |
| } |
| if(doHiragana && hirResult == UCOL_EQUAL) { |
| if((sColl.flags & UCOL_WAS_HIRAGANA) != (tColl.flags & UCOL_WAS_HIRAGANA)) { |
| hirResult = ((sColl.flags & UCOL_WAS_HIRAGANA) > (tColl.flags & UCOL_WAS_HIRAGANA)) |
| ? UCOL_LESS:UCOL_GREATER; |
| } |
| } |
| } else { |
| // if two primaries are different, we are done |
| result = (sOrder < tOrder) ? UCOL_LESS: UCOL_GREATER; |
| goto commonReturn; |
| } |
| } // no primary difference... do the rest from the buffers |
| } else { // shifted - do a slightly more complicated processing :) |
| for(;;) { |
| UBool sInShifted = FALSE; |
| UBool tInShifted = FALSE; |
| // This version of code can be refactored. However, it seems easier to understand this way. |
| // Source loop. Sam as the target loop. |
| for(;;) { |
| sOrder = ucol_IGetNextCE(coll, &sColl, &status); |
| if(sOrder == UCOL_NO_MORE_CES) { |
| UCOL_CEBUF_PUT(&sCEs, sOrder, &sColl); |
| break; |
| } else if(sOrder == 0) { |
| continue; |
| } else if(isContinuation(sOrder)) { |
| if((sOrder & UCOL_PRIMARYMASK) > 0) { /* There is primary value */ |
| if(sInShifted) { |
| sOrder = (sOrder & UCOL_PRIMARYMASK) | 0xC0; /* preserve interesting continuation */ |
| UCOL_CEBUF_PUT(&sCEs, sOrder, &sColl); |
| continue; |
| } else { |
| UCOL_CEBUF_PUT(&sCEs, sOrder, &sColl); |
| break; |
| } |
| } else { /* Just lower level values */ |
| if(sInShifted) { |
| continue; |
| } else { |
| UCOL_CEBUF_PUT(&sCEs, sOrder, &sColl); |
| continue; |
| } |
| } |
| } else { /* regular */ |
| if((sOrder & UCOL_PRIMARYMASK) > LVT) { |
| UCOL_CEBUF_PUT(&sCEs, sOrder, &sColl); |
| break; |
| } else { |
| if((sOrder & UCOL_PRIMARYMASK) > 0) { |
| sInShifted = TRUE; |
| sOrder &= UCOL_PRIMARYMASK; |
| UCOL_CEBUF_PUT(&sCEs, sOrder, &sColl); |
| continue; |
| } else { |
| UCOL_CEBUF_PUT(&sCEs, sOrder, &sColl); |
| sInShifted = FALSE; |
| continue; |
| } |
| } |
| } |
| } |
| sOrder &= UCOL_PRIMARYMASK; |
| sInShifted = FALSE; |
| |
| for(;;) { |
| tOrder = ucol_IGetNextCE(coll, &tColl, &status); |
| if(tOrder == UCOL_NO_MORE_CES) { |
| UCOL_CEBUF_PUT(&tCEs, tOrder, &tColl); |
| break; |
| } else if(tOrder == 0) { |
| continue; |
| } else if(isContinuation(tOrder)) { |
| if((tOrder & UCOL_PRIMARYMASK) > 0) { /* There is primary value */ |
| if(tInShifted) { |
| tOrder = (tOrder & UCOL_PRIMARYMASK) | 0xC0; /* preserve interesting continuation */ |
| UCOL_CEBUF_PUT(&tCEs, tOrder, &tColl); |
| continue; |
| } else { |
| UCOL_CEBUF_PUT(&tCEs, tOrder, &tColl); |
| break; |
| } |
| } else { /* Just lower level values */ |
| if(tInShifted) { |
| continue; |
| } else { |
| UCOL_CEBUF_PUT(&tCEs, tOrder, &tColl); |
| continue; |
| } |
| } |
| } else { /* regular */ |
| if((tOrder & UCOL_PRIMARYMASK) > LVT) { |
| UCOL_CEBUF_PUT(&tCEs, tOrder, &tColl); |
| break; |
| } else { |
| if((tOrder & UCOL_PRIMARYMASK) > 0) { |
| tInShifted = TRUE; |
| tOrder &= UCOL_PRIMARYMASK; |
| UCOL_CEBUF_PUT(&tCEs, tOrder, &tColl); |
| continue; |
| } else { |
| UCOL_CEBUF_PUT(&tCEs, tOrder, &tColl); |
| tInShifted = FALSE; |
| continue; |
| } |
| } |
| } |
| } |
| tOrder &= UCOL_PRIMARYMASK; |
| tInShifted = FALSE; |
| |
| if(sOrder == tOrder) { |
| /* |
| if(doHiragana && hirResult == UCOL_EQUAL) { |
| if((sColl.flags & UCOL_WAS_HIRAGANA) != (tColl.flags & UCOL_WAS_HIRAGANA)) { |
| hirResult = ((sColl.flags & UCOL_WAS_HIRAGANA) > (tColl.flags & UCOL_WAS_HIRAGANA)) |
| ? UCOL_LESS:UCOL_GREATER; |
| } |
| } |
| */ |
| if(sOrder == UCOL_NO_MORE_CES_PRIMARY) { |
| break; |
| } else { |
| sOrder = 0; tOrder = 0; |
| continue; |
| } |
| } else { |
| result = (sOrder < tOrder) ? UCOL_LESS : UCOL_GREATER; |
| goto commonReturn; |
| } |
| } /* no primary difference... do the rest from the buffers */ |
| } |
| |
| /* now, we're gonna reexamine collected CEs */ |
| uint32_t *sCE; |
| uint32_t *tCE; |
| |
| /* This is the secondary level of comparison */ |
| if(checkSecTer) { |
| if(!isFrenchSec) { /* normal */ |
| sCE = sCEs.buf; |
| tCE = tCEs.buf; |
| for(;;) { |
| while (secS == 0) { |
| secS = *(sCE++) & UCOL_SECONDARYMASK; |
| } |
| |
| while(secT == 0) { |
| secT = *(tCE++) & UCOL_SECONDARYMASK; |
| } |
| |
| if(secS == secT) { |
| if(secS == UCOL_NO_MORE_CES_SECONDARY) { |
| break; |
| } else { |
| secS = 0; secT = 0; |
| continue; |
| } |
| } else { |
| result = (secS < secT) ? UCOL_LESS : UCOL_GREATER; |
| goto commonReturn; |
| } |
| } |
| } else { /* do the French */ |
| uint32_t *sCESave = NULL; |
| uint32_t *tCESave = NULL; |
| sCE = sCEs.pos-2; /* this could also be sCEs-- if needs to be optimized */ |
| tCE = tCEs.pos-2; |
| for(;;) { |
| while (secS == 0 && sCE >= sCEs.buf) { |
| if(sCESave == 0) { |
| secS = *(sCE--); |
| if(isContinuation(secS)) { |
| while(isContinuation(secS = *(sCE--))); |
| /* after this, secS has the start of continuation, and sCEs points before that */ |
| sCESave = sCE; /* we save it, so that we know where to come back AND that we need to go forward */ |
| sCE+=2; /* need to point to the first continuation CP */ |
| /* However, now you can just continue doing stuff */ |
| } |
| } else { |
| secS = *(sCE++); |
| if(!isContinuation(secS)) { /* This means we have finished with this cont */ |
| sCE = sCESave; /* reset the pointer to before continuation */ |
| sCESave = 0; |
| continue; |
| } |
| } |
| secS &= UCOL_SECONDARYMASK; /* remove the continuation bit */ |
| } |
| |
| while(secT == 0 && tCE >= tCEs.buf) { |
| if(tCESave == 0) { |
| secT = *(tCE--); |
| if(isContinuation(secT)) { |
| while(isContinuation(secT = *(tCE--))); |
| /* after this, secS has the start of continuation, and sCEs points before that */ |
| tCESave = tCE; /* we save it, so that we know where to come back AND that we need to go forward */ |
| tCE+=2; /* need to point to the first continuation CP */ |
| /* However, now you can just continue doing stuff */ |
| } |
| } else { |
| secT = *(tCE++); |
| if(!isContinuation(secT)) { /* This means we have finished with this cont */ |
| tCE = tCESave; /* reset the pointer to before continuation */ |
| tCESave = 0; |
| continue; |
| } |
| } |
| secT &= UCOL_SECONDARYMASK; /* remove the continuation bit */ |
| } |
| |
| if(secS == secT) { |
| if(secS == UCOL_NO_MORE_CES_SECONDARY || (sCE < sCEs.buf && tCE < tCEs.buf)) { |
| break; |
| } else { |
| secS = 0; secT = 0; |
| continue; |
| } |
| } else { |
| result = (secS < secT) ? UCOL_LESS : UCOL_GREATER; |
| goto commonReturn; |
| } |
| } |
| } |
| } |
| |
| /* doing the case bit */ |
| if(checkCase) { |
| sCE = sCEs.buf; |
| tCE = tCEs.buf; |
| for(;;) { |
| while((secS & UCOL_REMOVE_CASE) == 0) { |
| if(!isContinuation(*sCE++)) { |
| secS =*(sCE-1) & UCOL_TERT_CASE_MASK; |
| secS ^= caseSwitch; |
| } else { |
| secS = 0; |
| } |
| } |
| |
| while((secT & UCOL_REMOVE_CASE) == 0) { |
| if(!isContinuation(*tCE++)) { |
| secT = *(tCE-1) & UCOL_TERT_CASE_MASK; |
| secT ^= caseSwitch; |
| } else { |
| secT = 0; |
| } |
| } |
| |
| if((secS & UCOL_CASE_BIT_MASK) < (secT & UCOL_CASE_BIT_MASK)) { |
| result = UCOL_LESS; |
| goto commonReturn; |
| } else if((secS & UCOL_CASE_BIT_MASK) > (secT & UCOL_CASE_BIT_MASK)) { |
| result = UCOL_GREATER; |
| goto commonReturn; |
| } |
| |
| if((secS & UCOL_REMOVE_CASE) == UCOL_NO_MORE_CES_TERTIARY || (secT & UCOL_REMOVE_CASE) == UCOL_NO_MORE_CES_TERTIARY ) { |
| break; |
| } else { |
| secS = 0; |
| secT = 0; |
| } |
| } |
| } |
| |
| /* Tertiary level */ |
| if(checkTertiary) { |
| secS = 0; |
| secT = 0; |
| sCE = sCEs.buf; |
| tCE = tCEs.buf; |
| for(;;) { |
| while((secS & UCOL_REMOVE_CASE) == 0) { |
| secS = *(sCE++) & tertiaryMask; |
| if(!isContinuation(secS)) { |
| secS ^= caseSwitch; |
| } else { |
| secS &= UCOL_REMOVE_CASE; |
| } |
| } |
| |
| while((secT & UCOL_REMOVE_CASE) == 0) { |
| secT = *(tCE++) & tertiaryMask; |
| if(!isContinuation(secT)) { |
| secT ^= caseSwitch; |
| } else { |
| secT &= UCOL_REMOVE_CASE; |
| } |
| } |
| |
| if(secS == secT) { |
| if((secS & UCOL_REMOVE_CASE) == 1) { |
| break; |
| } else { |
| secS = 0; secT = 0; |
| continue; |
| } |
| } else { |
| result = (secS < secT) ? UCOL_LESS : UCOL_GREATER; |
| goto commonReturn; |
| } |
| } |
| } |
| |
| |
| if(qShifted /*checkQuad*/) { |
| UBool sInShifted = TRUE; |
| UBool tInShifted = TRUE; |
| secS = 0; |
| secT = 0; |
| sCE = sCEs.buf; |
| tCE = tCEs.buf; |
| for(;;) { |
| while(secS == 0 && secS != UCOL_NO_MORE_CES || (isContinuation(secS) && !sInShifted)) { |
| secS = *(sCE++); |
| if(isContinuation(secS)) { |
| if(!sInShifted) { |
| continue; |
| } |
| } else if(secS > LVT || (secS & UCOL_PRIMARYMASK) == 0) { /* non continuation */ |
| secS = UCOL_PRIMARYMASK; |
| sInShifted = FALSE; |
| } else { |
| sInShifted = TRUE; |
| } |
| } |
| secS &= UCOL_PRIMARYMASK; |
| |
| |
| while(secT == 0 && secT != UCOL_NO_MORE_CES || (isContinuation(secT) && !tInShifted)) { |
| secT = *(tCE++); |
| if(isContinuation(secT)) { |
| if(!tInShifted) { |
| continue; |
| } |
| } else if(secT > LVT || (secT & UCOL_PRIMARYMASK) == 0) { |
| secT = UCOL_PRIMARYMASK; |
| tInShifted = FALSE; |
| } else { |
| tInShifted = TRUE; |
| } |
| } |
| secT &= UCOL_PRIMARYMASK; |
| |
| if(secS == secT) { |
| if(secS == UCOL_NO_MORE_CES_PRIMARY) { |
| break; |
| } else { |
| secS = 0; secT = 0; |
| continue; |
| } |
| } else { |
| result = (secS < secT) ? UCOL_LESS : UCOL_GREATER; |
| goto commonReturn; |
| } |
| } |
| } else if(doHiragana && hirResult != UCOL_EQUAL) { |
| // If we're fine on quaternaries, we might be different |
| // on Hiragana. This, however, might fail us in shifted. |
| result = hirResult; |
| goto commonReturn; |
| } |
| |
| /* For IDENTICAL comparisons, we use a bitwise character comparison */ |
| /* as a tiebreaker if all else is equal. */ |
| /* Getting here should be quite rare - strings are not identical - */ |
| /* that is checked first, but compared == through all other checks. */ |
| if(checkIdent) |
| { |
| //result = ucol_checkIdent(&sColl, &tColl, coll->normalizationMode == UCOL_ON); |
| result = ucol_checkIdent(&sColl, &tColl, TRUE); |
| } |
| |
| commonReturn: |
| if ((sColl.flags | tColl.flags) & UCOL_ITER_ALLOCATED) { |
| freeHeapWritableBuffer(&sColl); |
| freeHeapWritableBuffer(&tColl); |
| |
| if (sCEs.buf != sCEs.localArray ) { |
| uprv_free(sCEs.buf); |
| } |
| if (tCEs.buf != tCEs.localArray ) { |
| uprv_free(tCEs.buf); |
| } |
| } |
| |
| return result; |
| } |
| |
| /* convenience function for comparing strings */ |
| U_CAPI UBool U_EXPORT2 |
| ucol_greater( const UCollator *coll, |
| const UChar *source, |
| int32_t sourceLength, |
| const UChar *target, |
| int32_t targetLength) |
| { |
| return (ucol_strcoll(coll, source, sourceLength, target, targetLength) |
| == UCOL_GREATER); |
| } |
| |
| /* convenience function for comparing strings */ |
| U_CAPI UBool U_EXPORT2 |
| ucol_greaterOrEqual( const UCollator *coll, |
| const UChar *source, |
| int32_t sourceLength, |
| const UChar *target, |
| int32_t targetLength) |
| { |
| return (ucol_strcoll(coll, source, sourceLength, target, targetLength) |
| != UCOL_LESS); |
| } |
| |
| /* convenience function for comparing strings */ |
| U_CAPI UBool U_EXPORT2 |
| ucol_equal( const UCollator *coll, |
| const UChar *source, |
| int32_t sourceLength, |
| const UChar *target, |
| int32_t targetLength) |
| { |
| return (ucol_strcoll(coll, source, sourceLength, target, targetLength) |
| == UCOL_EQUAL); |
| } |
| |