| /* |
| ******************************************************************************* |
| * Copyright (C) 2004-2010, 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 "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 = (int32_t)(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 = (int32_t)(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 = (int32_t)(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_getLocaleByType(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*/internalBufferSize, languageArg); |
| elementSize = uloc_getCountry(locBuff, tempbuff, internalBufferSize, status); |
| appendShortStringElement(tempbuff, elementSize, buffer, &resultSize, /*capacity*/internalBufferSize, regionArg); |
| elementSize = uloc_getScript(locBuff, tempbuff, internalBufferSize, status); |
| appendShortStringElement(tempbuff, elementSize, buffer, &resultSize, /*capacity*/internalBufferSize, scriptArg); |
| elementSize = uloc_getVariant(locBuff, tempbuff, internalBufferSize, status); |
| appendShortStringElement(tempbuff, elementSize, buffer, &resultSize, /*capacity*/internalBufferSize, variantArg); |
| elementSize = uloc_getKeywordValue(locBuff, "collation", tempbuff, internalBufferSize, status); |
| appendShortStringElement(tempbuff, elementSize, buffer, &resultSize, /*capacity*/internalBufferSize, 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*/internalBufferSize, 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 |
| */ |
| 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, |
| ucol_tok_getRulesFromBundle, NULL, 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 |
