/* ******************************************************************************* * Copyright (C) 2004-2008, International Business Machines * Corporation and others. All Rights Reserved. ******************************************************************************* * file name: ucol_sit.cpp * encoding: US-ASCII * tab size: 8 (not used) * indentation:4 * * Modification history * Date Name Comments * 03/12/2004 weiv Creation */ #include "unicode/ustring.h" #include "unicode/udata.h" #include "utracimp.h" #include "ucol_imp.h" #include "ucol_tok.h" #include "unormimp.h" #include "cmemory.h" #include "cstring.h" #include "uresimp.h" #if !UCONFIG_NO_COLLATION enum OptionsList { UCOL_SIT_LANGUAGE = 0, UCOL_SIT_SCRIPT, UCOL_SIT_REGION, UCOL_SIT_VARIANT, UCOL_SIT_KEYWORD, UCOL_SIT_BCP47, UCOL_SIT_STRENGTH, UCOL_SIT_CASE_LEVEL, UCOL_SIT_CASE_FIRST, UCOL_SIT_NUMERIC_COLLATION, UCOL_SIT_ALTERNATE_HANDLING, UCOL_SIT_NORMALIZATION_MODE, UCOL_SIT_FRENCH_COLLATION, UCOL_SIT_HIRAGANA_QUATERNARY, UCOL_SIT_VARIABLE_TOP, UCOL_SIT_VARIABLE_TOP_VALUE, UCOL_SIT_ITEMS_COUNT }; /* option starters chars. */ static const char alternateHArg = 'A'; static const char variableTopValArg = 'B'; static const char caseFirstArg = 'C'; static const char numericCollArg = 'D'; static const char caseLevelArg = 'E'; static const char frenchCollArg = 'F'; static const char hiraganaQArg = 'H'; static const char keywordArg = 'K'; static const char languageArg = 'L'; static const char normArg = 'N'; static const char regionArg = 'R'; static const char strengthArg = 'S'; static const char variableTopArg = 'T'; static const char variantArg = 'V'; static const char RFC3066Arg = 'X'; static const char scriptArg = 'Z'; static const char collationKeyword[] = "@collation="; static const int32_t locElementCount = 5; static const int32_t locElementCapacity = 32; static const int32_t loc3066Capacity = 256; static const int32_t internalBufferSize = 512; /* structure containing specification of a collator. Initialized * from a short string. Also used to construct a short string from a * collator instance */ struct CollatorSpec { char locElements[locElementCount][locElementCapacity]; char locale[loc3066Capacity]; UColAttributeValue options[UCOL_ATTRIBUTE_COUNT]; uint32_t variableTopValue; UChar variableTopString[locElementCapacity]; int32_t variableTopStringLen; UBool variableTopSet; struct { const char *start; int32_t len; } entries[UCOL_SIT_ITEMS_COUNT]; }; /* structure for converting between character attribute * representation and real collation attribute value. */ struct AttributeConversion { char letter; UColAttributeValue value; }; static const AttributeConversion conversions[12] = { { '1', UCOL_PRIMARY }, { '2', UCOL_SECONDARY }, { '3', UCOL_TERTIARY }, { '4', UCOL_QUATERNARY }, { 'D', UCOL_DEFAULT }, { 'I', UCOL_IDENTICAL }, { 'L', UCOL_LOWER_FIRST }, { 'N', UCOL_NON_IGNORABLE }, { 'O', UCOL_ON }, { 'S', UCOL_SHIFTED }, { 'U', UCOL_UPPER_FIRST }, { 'X', UCOL_OFF } }; static char ucol_sit_attributeValueToLetter(UColAttributeValue value, UErrorCode *status) { uint32_t i = 0; for(i = 0; i < sizeof(conversions)/sizeof(conversions[0]); i++) { if(conversions[i].value == value) { return conversions[i].letter; } } *status = U_ILLEGAL_ARGUMENT_ERROR; return 0; } static UColAttributeValue ucol_sit_letterToAttributeValue(char letter, UErrorCode *status) { uint32_t i = 0; for(i = 0; i < sizeof(conversions)/sizeof(conversions[0]); i++) { if(conversions[i].letter == letter) { return conversions[i].value; } } *status = U_ILLEGAL_ARGUMENT_ERROR; return UCOL_DEFAULT; } /* function prototype for functions used to parse a short string */ U_CDECL_BEGIN typedef const char* U_CALLCONV ActionFunction(CollatorSpec *spec, uint32_t value1, const char* string, UErrorCode *status); U_CDECL_END U_CDECL_BEGIN static const char* U_CALLCONV _processLocaleElement(CollatorSpec *spec, uint32_t value, const char* string, UErrorCode *status) { int32_t len = 0; do { if(value == 0 || value == 4) { spec->locElements[value][len++] = uprv_tolower(*string); } else { spec->locElements[value][len++] = *string; } } while(*(++string) != '_' && *string && len < locElementCapacity); if(len >= locElementCapacity) { *status = U_BUFFER_OVERFLOW_ERROR; return string; } // don't skip the underscore at the end return string; } U_CDECL_END U_CDECL_BEGIN static const char* U_CALLCONV _processRFC3066Locale(CollatorSpec *spec, uint32_t, const char* string, UErrorCode *status) { char terminator = *string; string++; const char *end = uprv_strchr(string+1, terminator); if(end == NULL || end - string >= loc3066Capacity) { *status = U_BUFFER_OVERFLOW_ERROR; return string; } else { uprv_strncpy(spec->locale, string, end-string); return end+1; } } U_CDECL_END U_CDECL_BEGIN static const char* U_CALLCONV _processCollatorOption(CollatorSpec *spec, uint32_t option, const char* string, UErrorCode *status) { spec->options[option] = ucol_sit_letterToAttributeValue(*string, status); if((*(++string) != '_' && *string) || U_FAILURE(*status)) { *status = U_ILLEGAL_ARGUMENT_ERROR; } return string; } U_CDECL_END static UChar readHexCodeUnit(const char **string, UErrorCode *status) { UChar result = 0; int32_t value = 0; char c; int32_t noDigits = 0; while((c = **string) != 0 && noDigits < 4) { if( c >= '0' && c <= '9') { value = c - '0'; } else if ( c >= 'a' && c <= 'f') { value = c - 'a' + 10; } else if ( c >= 'A' && c <= 'F') { value = c - 'A' + 10; } else { *status = U_ILLEGAL_ARGUMENT_ERROR; return 0; } result = (result << 4) | (UChar)value; noDigits++; (*string)++; } // if the string was terminated before we read 4 digits, set an error if(noDigits < 4) { *status = U_ILLEGAL_ARGUMENT_ERROR; } return result; } U_CDECL_BEGIN static const char* U_CALLCONV _processVariableTop(CollatorSpec *spec, uint32_t value1, const char* string, UErrorCode *status) { // get four digits int32_t i = 0; if(!value1) { while(U_SUCCESS(*status) && i < locElementCapacity && *string != 0 && *string != '_') { spec->variableTopString[i++] = readHexCodeUnit(&string, status); } spec->variableTopStringLen = i; if(i == locElementCapacity && (*string != 0 || *string != '_')) { *status = U_BUFFER_OVERFLOW_ERROR; } } else { spec->variableTopValue = readHexCodeUnit(&string, status); } if(U_SUCCESS(*status)) { spec->variableTopSet = TRUE; } return string; } U_CDECL_END /* Table for parsing short strings */ struct ShortStringOptions { char optionStart; ActionFunction *action; uint32_t attr; }; static const ShortStringOptions options[UCOL_SIT_ITEMS_COUNT] = { /* 10 ALTERNATE_HANDLING */ {alternateHArg, _processCollatorOption, UCOL_ALTERNATE_HANDLING }, // alternate N, S, D /* 15 VARIABLE_TOP_VALUE */ {variableTopValArg, _processVariableTop, 1 }, /* 08 CASE_FIRST */ {caseFirstArg, _processCollatorOption, UCOL_CASE_FIRST }, // case first L, U, X, D /* 09 NUMERIC_COLLATION */ {numericCollArg, _processCollatorOption, UCOL_NUMERIC_COLLATION }, // codan O, X, D /* 07 CASE_LEVEL */ {caseLevelArg, _processCollatorOption, UCOL_CASE_LEVEL }, // case level O, X, D /* 12 FRENCH_COLLATION */ {frenchCollArg, _processCollatorOption, UCOL_FRENCH_COLLATION }, // french O, X, D /* 13 HIRAGANA_QUATERNARY] */ {hiraganaQArg, _processCollatorOption, UCOL_HIRAGANA_QUATERNARY_MODE }, // hiragana O, X, D /* 04 KEYWORD */ {keywordArg, _processLocaleElement, 4 }, // keyword /* 00 LANGUAGE */ {languageArg, _processLocaleElement, 0 }, // language /* 11 NORMALIZATION_MODE */ {normArg, _processCollatorOption, UCOL_NORMALIZATION_MODE }, // norm O, X, D /* 02 REGION */ {regionArg, _processLocaleElement, 2 }, // region /* 06 STRENGTH */ {strengthArg, _processCollatorOption, UCOL_STRENGTH }, // strength 1, 2, 3, 4, I, D /* 14 VARIABLE_TOP */ {variableTopArg, _processVariableTop, 0 }, /* 03 VARIANT */ {variantArg, _processLocaleElement, 3 }, // variant /* 05 RFC3066BIS */ {RFC3066Arg, _processRFC3066Locale, 0 }, // rfc3066bis locale name /* 01 SCRIPT */ {scriptArg, _processLocaleElement, 1 } // script }; static const char* ucol_sit_readOption(const char *start, CollatorSpec *spec, UErrorCode *status) { int32_t i = 0; for(i = 0; i < UCOL_SIT_ITEMS_COUNT; i++) { if(*start == options[i].optionStart) { spec->entries[i].start = start; const char* end = options[i].action(spec, options[i].attr, start+1, status); spec->entries[i].len = end - start; return end; } } *status = U_ILLEGAL_ARGUMENT_ERROR; return start; } static void ucol_sit_initCollatorSpecs(CollatorSpec *spec) { // reset everything uprv_memset(spec, 0, sizeof(CollatorSpec)); // set collation options to default int32_t i = 0; for(i = 0; i < UCOL_ATTRIBUTE_COUNT; i++) { spec->options[i] = UCOL_DEFAULT; } } static const char* ucol_sit_readSpecs(CollatorSpec *s, const char *string, UParseError *parseError, UErrorCode *status) { const char *definition = string; while(U_SUCCESS(*status) && *string) { string = ucol_sit_readOption(string, s, status); // advance over '_' while(*string && *string == '_') { string++; } } if(U_FAILURE(*status)) { parseError->offset = string - definition; } return string; } static int32_t ucol_sit_dumpSpecs(CollatorSpec *s, char *destination, int32_t capacity, UErrorCode *status) { int32_t i = 0, j = 0; int32_t len = 0; char optName; if(U_SUCCESS(*status)) { for(i = 0; i < UCOL_SIT_ITEMS_COUNT; i++) { if(s->entries[i].start) { if(len) { if(len < capacity) { uprv_strcat(destination, "_"); } len++; } optName = *(s->entries[i].start); if(optName == languageArg || optName == regionArg || optName == variantArg || optName == keywordArg) { for(j = 0; j < s->entries[i].len; j++) { if(len + j < capacity) { destination[len+j] = uprv_toupper(*(s->entries[i].start+j)); } } len += s->entries[i].len; } else { len += s->entries[i].len; if(len < capacity) { uprv_strncat(destination,s->entries[i].start, s->entries[i].len); } } } } return len; } else { return 0; } } static void ucol_sit_calculateWholeLocale(CollatorSpec *s) { // put the locale together, unless we have a done // locale if(s->locale[0] == 0) { // first the language uprv_strcat(s->locale, s->locElements[0]); // then the script, if present if(*(s->locElements[1])) { uprv_strcat(s->locale, "_"); uprv_strcat(s->locale, s->locElements[1]); } // then the region, if present if(*(s->locElements[2])) { uprv_strcat(s->locale, "_"); uprv_strcat(s->locale, s->locElements[2]); } else if(*(s->locElements[3])) { // if there is a variant, we need an underscore uprv_strcat(s->locale, "_"); } // add variant, if there if(*(s->locElements[3])) { uprv_strcat(s->locale, "_"); uprv_strcat(s->locale, s->locElements[3]); } // if there is a collation keyword, add that too if(*(s->locElements[4])) { uprv_strcat(s->locale, collationKeyword); uprv_strcat(s->locale, s->locElements[4]); } } } U_CAPI void U_EXPORT2 ucol_prepareShortStringOpen( const char *definition, UBool, UParseError *parseError, UErrorCode *status) { if(U_FAILURE(*status)) return; UParseError internalParseError; if(!parseError) { parseError = &internalParseError; } parseError->line = 0; parseError->offset = 0; parseError->preContext[0] = 0; parseError->postContext[0] = 0; // first we want to pick stuff out of short string. // we'll end up with an UCA version, locale and a bunch of // settings // analyse the string in order to get everything we need. CollatorSpec s; ucol_sit_initCollatorSpecs(&s); ucol_sit_readSpecs(&s, definition, parseError, status); ucol_sit_calculateWholeLocale(&s); char buffer[internalBufferSize]; uprv_memset(buffer, 0, internalBufferSize); uloc_canonicalize(s.locale, buffer, internalBufferSize, status); UResourceBundle *b = ures_open(U_ICUDATA_COLL, buffer, status); /* we try to find stuff from keyword */ UResourceBundle *collations = ures_getByKey(b, "collations", NULL, status); UResourceBundle *collElem = NULL; char keyBuffer[256]; // if there is a keyword, we pick it up and try to get elements if(!uloc_getKeywordValue(buffer, "collation", keyBuffer, 256, status)) { // no keyword. we try to find the default setting, which will give us the keyword value UResourceBundle *defaultColl = ures_getByKeyWithFallback(collations, "default", NULL, status); if(U_SUCCESS(*status)) { int32_t defaultKeyLen = 0; const UChar *defaultKey = ures_getString(defaultColl, &defaultKeyLen, status); u_UCharsToChars(defaultKey, keyBuffer, defaultKeyLen); keyBuffer[defaultKeyLen] = 0; } else { *status = U_INTERNAL_PROGRAM_ERROR; return; } ures_close(defaultColl); } collElem = ures_getByKeyWithFallback(collations, keyBuffer, collElem, status); ures_close(collElem); ures_close(collations); ures_close(b); } U_CAPI UCollator* U_EXPORT2 ucol_openFromShortString( const char *definition, UBool forceDefaults, UParseError *parseError, UErrorCode *status) { UTRACE_ENTRY_OC(UTRACE_UCOL_OPEN_FROM_SHORT_STRING); UTRACE_DATA1(UTRACE_INFO, "short string = \"%s\"", definition); if(U_FAILURE(*status)) return 0; UParseError internalParseError; if(!parseError) { parseError = &internalParseError; } parseError->line = 0; parseError->offset = 0; parseError->preContext[0] = 0; parseError->postContext[0] = 0; // first we want to pick stuff out of short string. // we'll end up with an UCA version, locale and a bunch of // settings // analyse the string in order to get everything we need. const char *string = definition; CollatorSpec s; ucol_sit_initCollatorSpecs(&s); string = ucol_sit_readSpecs(&s, definition, parseError, status); ucol_sit_calculateWholeLocale(&s); char buffer[internalBufferSize]; uprv_memset(buffer, 0, internalBufferSize); uloc_canonicalize(s.locale, buffer, internalBufferSize, status); UCollator *result = ucol_open(buffer, status); int32_t i = 0; for(i = 0; i < UCOL_ATTRIBUTE_COUNT; i++) { if(s.options[i] != UCOL_DEFAULT) { if(forceDefaults || ucol_getAttribute(result, (UColAttribute)i, status) != s.options[i]) { ucol_setAttribute(result, (UColAttribute)i, s.options[i], status); } if(U_FAILURE(*status)) { parseError->offset = string - definition; ucol_close(result); return NULL; } } } if(s.variableTopSet) { if(s.variableTopString[0]) { ucol_setVariableTop(result, s.variableTopString, s.variableTopStringLen, status); } else { // we set by value, using 'B' ucol_restoreVariableTop(result, s.variableTopValue, status); } } if(U_FAILURE(*status)) { // here it can only be a bogus value ucol_close(result); result = NULL; } UTRACE_EXIT_PTR_STATUS(result, *status); return result; } static void appendShortStringElement(const char *src, int32_t len, char *result, int32_t *resultSize, int32_t capacity, char arg) { if(len) { if(*resultSize) { if(*resultSize < capacity) { uprv_strcat(result, "_"); } (*resultSize)++; } *resultSize += len + 1; if(*resultSize < capacity) { uprv_strncat(result, &arg, 1); uprv_strncat(result, src, len); } } } U_CAPI int32_t U_EXPORT2 ucol_getShortDefinitionString(const UCollator *coll, const char *locale, char *dst, int32_t capacity, UErrorCode *status) { if(U_FAILURE(*status)) return 0; char buffer[internalBufferSize]; uprv_memset(buffer, 0, internalBufferSize*sizeof(char)); int32_t resultSize = 0; char tempbuff[internalBufferSize]; char locBuff[internalBufferSize]; uprv_memset(buffer, 0, internalBufferSize*sizeof(char)); int32_t elementSize = 0; UBool isAvailable = 0; CollatorSpec s; ucol_sit_initCollatorSpecs(&s); if(!locale) { locale = ucol_getLocale(coll, ULOC_VALID_LOCALE, status); } elementSize = ucol_getFunctionalEquivalent(locBuff, internalBufferSize, "collation", locale, &isAvailable, status); if(elementSize) { // we should probably canonicalize here... elementSize = uloc_getLanguage(locBuff, tempbuff, internalBufferSize, status); appendShortStringElement(tempbuff, elementSize, buffer, &resultSize, capacity, languageArg); elementSize = uloc_getCountry(locBuff, tempbuff, internalBufferSize, status); appendShortStringElement(tempbuff, elementSize, buffer, &resultSize, capacity, regionArg); elementSize = uloc_getScript(locBuff, tempbuff, internalBufferSize, status); appendShortStringElement(tempbuff, elementSize, buffer, &resultSize, capacity, scriptArg); elementSize = uloc_getVariant(locBuff, tempbuff, internalBufferSize, status); appendShortStringElement(tempbuff, elementSize, buffer, &resultSize, capacity, variantArg); elementSize = uloc_getKeywordValue(locBuff, "collation", tempbuff, internalBufferSize, status); appendShortStringElement(tempbuff, elementSize, buffer, &resultSize, capacity, keywordArg); } int32_t i = 0; UColAttributeValue attribute = UCOL_DEFAULT; for(i = 0; i < UCOL_SIT_ITEMS_COUNT; i++) { if(options[i].action == _processCollatorOption) { attribute = ucol_getAttributeOrDefault(coll, (UColAttribute)options[i].attr, status); if(attribute != UCOL_DEFAULT) { char letter = ucol_sit_attributeValueToLetter(attribute, status); appendShortStringElement(&letter, 1, buffer, &resultSize, capacity, options[i].optionStart); } } } if(coll->variableTopValueisDefault == FALSE) { //s.variableTopValue = ucol_getVariableTop(coll, status); elementSize = T_CString_integerToString(tempbuff, coll->variableTopValue, 16); appendShortStringElement(tempbuff, elementSize, buffer, &resultSize, capacity, variableTopValArg); } UParseError parseError; return ucol_normalizeShortDefinitionString(buffer, dst, capacity, &parseError, status); } U_CAPI int32_t U_EXPORT2 ucol_normalizeShortDefinitionString(const char *definition, char *destination, int32_t capacity, UParseError *parseError, UErrorCode *status) { if(U_FAILURE(*status)) { return 0; } if(destination) { uprv_memset(destination, 0, capacity*sizeof(char)); } UParseError pe; if(!parseError) { parseError = &pe; } // validate CollatorSpec s; ucol_sit_initCollatorSpecs(&s); ucol_sit_readSpecs(&s, definition, parseError, status); return ucol_sit_dumpSpecs(&s, destination, capacity, status); } U_CAPI UColAttributeValue U_EXPORT2 ucol_getAttributeOrDefault(const UCollator *coll, UColAttribute attr, UErrorCode *status) { if(U_FAILURE(*status) || coll == NULL) { return UCOL_DEFAULT; } switch(attr) { case UCOL_NUMERIC_COLLATION: return coll->numericCollationisDefault?UCOL_DEFAULT:coll->numericCollation; case UCOL_HIRAGANA_QUATERNARY_MODE: return coll->hiraganaQisDefault?UCOL_DEFAULT:coll->hiraganaQ; case UCOL_FRENCH_COLLATION: /* attribute for direction of secondary weights*/ return coll->frenchCollationisDefault?UCOL_DEFAULT:coll->frenchCollation; case UCOL_ALTERNATE_HANDLING: /* attribute for handling variable elements*/ return coll->alternateHandlingisDefault?UCOL_DEFAULT:coll->alternateHandling; case UCOL_CASE_FIRST: /* who goes first, lower case or uppercase */ return coll->caseFirstisDefault?UCOL_DEFAULT:coll->caseFirst; case UCOL_CASE_LEVEL: /* do we have an extra case level */ return coll->caseLevelisDefault?UCOL_DEFAULT:coll->caseLevel; case UCOL_NORMALIZATION_MODE: /* attribute for normalization */ return coll->normalizationModeisDefault?UCOL_DEFAULT:coll->normalizationMode; case UCOL_STRENGTH: /* attribute for strength */ return coll->strengthisDefault?UCOL_DEFAULT:coll->strength; case UCOL_ATTRIBUTE_COUNT: default: *status = U_ILLEGAL_ARGUMENT_ERROR; break; } return UCOL_DEFAULT; } struct contContext { const UCollator *coll; USet *conts; USet *expansions; USet *removedContractions; UBool addPrefixes; UErrorCode *status; }; static void addSpecial(contContext *context, UChar *buffer, int32_t bufLen, uint32_t CE, int32_t leftIndex, int32_t rightIndex, UErrorCode *status) { const UCollator *coll = context->coll; USet *contractions = context->conts; USet *expansions = context->expansions; UBool addPrefixes = context->addPrefixes; const UChar *UCharOffset = (UChar *)coll->image+getContractOffset(CE); uint32_t newCE = *(coll->contractionCEs + (UCharOffset - coll->contractionIndex)); // we might have a contraction that ends from previous level if(newCE != UCOL_NOT_FOUND) { if(isSpecial(CE) && getCETag(CE) == CONTRACTION_TAG && isSpecial(newCE) && getCETag(newCE) == SPEC_PROC_TAG && addPrefixes) { addSpecial(context, buffer, bufLen, newCE, leftIndex, rightIndex, status); } if(contractions && rightIndex-leftIndex > 1) { uset_addString(contractions, buffer+leftIndex, rightIndex-leftIndex); if(expansions && isSpecial(CE) && getCETag(CE) == EXPANSION_TAG) { uset_addString(expansions, buffer+leftIndex, rightIndex-leftIndex); } } } UCharOffset++; // check whether we're doing contraction or prefix if(getCETag(CE) == SPEC_PROC_TAG && addPrefixes) { if(leftIndex == 0) { *status = U_INTERNAL_PROGRAM_ERROR; return; } --leftIndex; while(*UCharOffset != 0xFFFF) { newCE = *(coll->contractionCEs + (UCharOffset - coll->contractionIndex)); buffer[leftIndex] = *UCharOffset; if(isSpecial(newCE) && (getCETag(newCE) == CONTRACTION_TAG || getCETag(newCE) == SPEC_PROC_TAG)) { addSpecial(context, buffer, bufLen, newCE, leftIndex, rightIndex, status); } else { if(contractions) { uset_addString(contractions, buffer+leftIndex, rightIndex-leftIndex); } if(expansions && isSpecial(newCE) && getCETag(newCE) == EXPANSION_TAG) { uset_addString(expansions, buffer+leftIndex, rightIndex-leftIndex); } } UCharOffset++; } } else if(getCETag(CE) == CONTRACTION_TAG) { if(rightIndex == bufLen-1) { *status = U_INTERNAL_PROGRAM_ERROR; return; } while(*UCharOffset != 0xFFFF) { newCE = *(coll->contractionCEs + (UCharOffset - coll->contractionIndex)); buffer[rightIndex] = *UCharOffset; if(isSpecial(newCE) && (getCETag(newCE) == CONTRACTION_TAG || getCETag(newCE) == SPEC_PROC_TAG)) { addSpecial(context, buffer, bufLen, newCE, leftIndex, rightIndex+1, status); } else { if(contractions) { uset_addString(contractions, buffer+leftIndex, rightIndex+1-leftIndex); } if(expansions && isSpecial(newCE) && getCETag(newCE) == EXPANSION_TAG) { uset_addString(expansions, buffer+leftIndex, rightIndex+1-leftIndex); } } UCharOffset++; } } } U_CDECL_BEGIN static UBool U_CALLCONV _processSpecials(const void *context, UChar32 start, UChar32 limit, uint32_t CE) { UErrorCode *status = ((contContext *)context)->status; USet *expansions = ((contContext *)context)->expansions; USet *removed = ((contContext *)context)->removedContractions; UBool addPrefixes = ((contContext *)context)->addPrefixes; UChar contraction[internalBufferSize]; if(isSpecial(CE)) { if(((getCETag(CE) == SPEC_PROC_TAG && addPrefixes) || getCETag(CE) == CONTRACTION_TAG)) { while(start < limit && U_SUCCESS(*status)) { // if there are suppressed contractions, we don't // want to add them. if(removed && uset_contains(removed, start)) { start++; continue; } // we start our contraction from middle, since we don't know if it // will grow toward right or left contraction[internalBufferSize/2] = (UChar)start; addSpecial(((contContext *)context), contraction, internalBufferSize, CE, internalBufferSize/2, internalBufferSize/2+1, status); start++; } } else if(expansions && getCETag(CE) == EXPANSION_TAG) { while(start < limit && U_SUCCESS(*status)) { uset_add(expansions, start++); } } } if(U_FAILURE(*status)) { return FALSE; } else { return TRUE; } } U_CDECL_END /** * Get a set containing the contractions defined by the collator. The set includes * both the UCA contractions and the contractions defined by the collator * @param coll collator * @param conts the set to hold the result * @param status to hold the error code * @return the size of the contraction set * * @draft ICU 3.0 */ U_CAPI int32_t U_EXPORT2 ucol_getContractions( const UCollator *coll, USet *contractions, UErrorCode *status) { ucol_getContractionsAndExpansions(coll, contractions, NULL, FALSE, status); return uset_getItemCount(contractions); } /** * Get a set containing the expansions defined by the collator. The set includes * both the UCA expansions and the expansions defined by the tailoring * @param coll collator * @param conts the set to hold the result * @param addPrefixes add the prefix contextual elements to contractions * @param status to hold the error code * * @draft ICU 3.4 */ U_CAPI void U_EXPORT2 ucol_getContractionsAndExpansions( const UCollator *coll, USet *contractions, USet *expansions, UBool addPrefixes, UErrorCode *status) { if(U_FAILURE(*status)) { return; } if(coll == NULL) { *status = U_ILLEGAL_ARGUMENT_ERROR; return; } if(contractions) { uset_clear(contractions); } if(expansions) { uset_clear(expansions); } int32_t rulesLen = 0; const UChar* rules = ucol_getRules(coll, &rulesLen); UColTokenParser src; ucol_tok_initTokenList(&src, rules, rulesLen, coll->UCA, status); contContext c = { NULL, contractions, expansions, src.removeSet, addPrefixes, status }; // Add the UCA contractions c.coll = coll->UCA; utrie_enum(&coll->UCA->mapping, NULL, _processSpecials, &c); // This is collator specific. Add contractions from a collator c.coll = coll; c.removedContractions = NULL; utrie_enum(&coll->mapping, NULL, _processSpecials, &c); ucol_tok_closeTokenList(&src); } U_CAPI int32_t U_EXPORT2 ucol_getUnsafeSet( const UCollator *coll, USet *unsafe, UErrorCode *status) { UChar buffer[internalBufferSize]; int32_t len = 0; uset_clear(unsafe); // cccpattern = "[[:^tccc=0:][:^lccc=0:]]", unfortunately variant static const UChar cccpattern[25] = { 0x5b, 0x5b, 0x3a, 0x5e, 0x74, 0x63, 0x63, 0x63, 0x3d, 0x30, 0x3a, 0x5d, 0x5b, 0x3a, 0x5e, 0x6c, 0x63, 0x63, 0x63, 0x3d, 0x30, 0x3a, 0x5d, 0x5d, 0x00 }; // add chars that fail the fcd check uset_applyPattern(unsafe, cccpattern, 24, USET_IGNORE_SPACE, status); // add Thai/Lao prevowels uset_addRange(unsafe, 0xe40, 0xe44); uset_addRange(unsafe, 0xec0, 0xec4); // add lead/trail surrogates uset_addRange(unsafe, 0xd800, 0xdfff); USet *contractions = uset_open(0,0); int32_t i = 0, j = 0; int32_t contsSize = ucol_getContractions(coll, contractions, status); UChar32 c = 0; // Contraction set consists only of strings // to get unsafe code points, we need to // break the strings apart and add them to the unsafe set for(i = 0; i < contsSize; i++) { len = uset_getItem(contractions, i, NULL, NULL, buffer, internalBufferSize, status); if(len > 0) { j = 0; while(j < len) { U16_NEXT(buffer, j, len, c); if(j < len) { uset_add(unsafe, c); } } } } uset_close(contractions); return uset_size(unsafe); } #endif