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Diffstat (limited to 'intl/icu/source/common/uprops.cpp')
| -rw-r--r-- | intl/icu/source/common/uprops.cpp | 612 |
1 files changed, 612 insertions, 0 deletions
diff --git a/intl/icu/source/common/uprops.cpp b/intl/icu/source/common/uprops.cpp new file mode 100644 index 000000000..46ceb66d8 --- /dev/null +++ b/intl/icu/source/common/uprops.cpp @@ -0,0 +1,612 @@ +// Copyright (C) 2016 and later: Unicode, Inc. and others. +// License & terms of use: http://www.unicode.org/copyright.html +/* +******************************************************************************* +* +* Copyright (C) 2002-2016, International Business Machines +* Corporation and others. All Rights Reserved. +* +******************************************************************************* +* file name: uprops.cpp +* encoding: US-ASCII +* tab size: 8 (not used) +* indentation:4 +* +* created on: 2002feb24 +* created by: Markus W. Scherer +* +* Implementations for mostly non-core Unicode character properties +* stored in uprops.icu. +* +* With the APIs implemented here, almost all properties files and +* their associated implementation files are used from this file, +* including those for normalization and case mappings. +*/ + +#include "unicode/utypes.h" +#include "unicode/uchar.h" +#include "unicode/unorm2.h" +#include "unicode/uscript.h" +#include "unicode/ustring.h" +#include "cstring.h" +#include "normalizer2impl.h" +#include "umutex.h" +#include "ubidi_props.h" +#include "uprops.h" +#include "ucase.h" +#include "ustr_imp.h" + +U_NAMESPACE_USE + +#define GET_BIDI_PROPS() ubidi_getSingleton() + +/* general properties API functions ----------------------------------------- */ + +struct BinaryProperty; + +typedef UBool BinaryPropertyContains(const BinaryProperty &prop, UChar32 c, UProperty which); + +struct BinaryProperty { + int32_t column; // SRC_PROPSVEC column, or "source" if mask==0 + uint32_t mask; + BinaryPropertyContains *contains; +}; + +static UBool defaultContains(const BinaryProperty &prop, UChar32 c, UProperty /*which*/) { + /* systematic, directly stored properties */ + return (u_getUnicodeProperties(c, prop.column)&prop.mask)!=0; +} + +static UBool caseBinaryPropertyContains(const BinaryProperty &/*prop*/, UChar32 c, UProperty which) { + return ucase_hasBinaryProperty(c, which); +} + +static UBool isBidiControl(const BinaryProperty &/*prop*/, UChar32 c, UProperty /*which*/) { + return ubidi_isBidiControl(GET_BIDI_PROPS(), c); +} + +static UBool isMirrored(const BinaryProperty &/*prop*/, UChar32 c, UProperty /*which*/) { + return ubidi_isMirrored(GET_BIDI_PROPS(), c); +} + +static UBool isJoinControl(const BinaryProperty &/*prop*/, UChar32 c, UProperty /*which*/) { + return ubidi_isJoinControl(GET_BIDI_PROPS(), c); +} + +#if UCONFIG_NO_NORMALIZATION +static UBool hasFullCompositionExclusion(const BinaryProperty &, UChar32, UProperty) { + return FALSE; +} +#else +static UBool hasFullCompositionExclusion(const BinaryProperty &/*prop*/, UChar32 c, UProperty /*which*/) { + // By definition, Full_Composition_Exclusion is the same as NFC_QC=No. + UErrorCode errorCode=U_ZERO_ERROR; + const Normalizer2Impl *impl=Normalizer2Factory::getNFCImpl(errorCode); + return U_SUCCESS(errorCode) && impl->isCompNo(impl->getNorm16(c)); +} +#endif + +// UCHAR_NF*_INERT properties +#if UCONFIG_NO_NORMALIZATION +static UBool isNormInert(const BinaryProperty &, UChar32, UProperty) { + return FALSE; +} +#else +static UBool isNormInert(const BinaryProperty &/*prop*/, UChar32 c, UProperty which) { + UErrorCode errorCode=U_ZERO_ERROR; + const Normalizer2 *norm2=Normalizer2Factory::getInstance( + (UNormalizationMode)(which-UCHAR_NFD_INERT+UNORM_NFD), errorCode); + return U_SUCCESS(errorCode) && norm2->isInert(c); +} +#endif + +#if UCONFIG_NO_NORMALIZATION +static UBool changesWhenCasefolded(const BinaryProperty &, UChar32, UProperty) { + return FALSE; +} +#else +static UBool changesWhenCasefolded(const BinaryProperty &/*prop*/, UChar32 c, UProperty /*which*/) { + UnicodeString nfd; + UErrorCode errorCode=U_ZERO_ERROR; + const Normalizer2 *nfcNorm2=Normalizer2::getNFCInstance(errorCode); + if(U_FAILURE(errorCode)) { + return FALSE; + } + if(nfcNorm2->getDecomposition(c, nfd)) { + /* c has a decomposition */ + if(nfd.length()==1) { + c=nfd[0]; /* single BMP code point */ + } else if(nfd.length()<=U16_MAX_LENGTH && + nfd.length()==U16_LENGTH(c=nfd.char32At(0)) + ) { + /* single supplementary code point */ + } else { + c=U_SENTINEL; + } + } else if(c<0) { + return FALSE; /* protect against bad input */ + } + if(c>=0) { + /* single code point */ + const UCaseProps *csp=ucase_getSingleton(); + const UChar *resultString; + return (UBool)(ucase_toFullFolding(csp, c, &resultString, U_FOLD_CASE_DEFAULT)>=0); + } else { + /* guess some large but stack-friendly capacity */ + UChar dest[2*UCASE_MAX_STRING_LENGTH]; + int32_t destLength; + destLength=u_strFoldCase(dest, UPRV_LENGTHOF(dest), + nfd.getBuffer(), nfd.length(), + U_FOLD_CASE_DEFAULT, &errorCode); + return (UBool)(U_SUCCESS(errorCode) && + 0!=u_strCompare(nfd.getBuffer(), nfd.length(), + dest, destLength, FALSE)); + } +} +#endif + +#if UCONFIG_NO_NORMALIZATION +static UBool changesWhenNFKC_Casefolded(const BinaryProperty &, UChar32, UProperty) { + return FALSE; +} +#else +static UBool changesWhenNFKC_Casefolded(const BinaryProperty &/*prop*/, UChar32 c, UProperty /*which*/) { + UErrorCode errorCode=U_ZERO_ERROR; + const Normalizer2Impl *kcf=Normalizer2Factory::getNFKC_CFImpl(errorCode); + if(U_FAILURE(errorCode)) { + return FALSE; + } + UnicodeString src(c); + UnicodeString dest; + { + // The ReorderingBuffer must be in a block because its destructor + // needs to release dest's buffer before we look at its contents. + ReorderingBuffer buffer(*kcf, dest); + // Small destCapacity for NFKC_CF(c). + if(buffer.init(5, errorCode)) { + const UChar *srcArray=src.getBuffer(); + kcf->compose(srcArray, srcArray+src.length(), FALSE, + TRUE, buffer, errorCode); + } + } + return U_SUCCESS(errorCode) && dest!=src; +} +#endif + +#if UCONFIG_NO_NORMALIZATION +static UBool isCanonSegmentStarter(const BinaryProperty &, UChar32, UProperty) { + return FALSE; +} +#else +static UBool isCanonSegmentStarter(const BinaryProperty &/*prop*/, UChar32 c, UProperty /*which*/) { + UErrorCode errorCode=U_ZERO_ERROR; + const Normalizer2Impl *impl=Normalizer2Factory::getNFCImpl(errorCode); + return + U_SUCCESS(errorCode) && impl->ensureCanonIterData(errorCode) && + impl->isCanonSegmentStarter(c); +} +#endif + +static UBool isPOSIX_alnum(const BinaryProperty &/*prop*/, UChar32 c, UProperty /*which*/) { + return u_isalnumPOSIX(c); +} + +static UBool isPOSIX_blank(const BinaryProperty &/*prop*/, UChar32 c, UProperty /*which*/) { + return u_isblank(c); +} + +static UBool isPOSIX_graph(const BinaryProperty &/*prop*/, UChar32 c, UProperty /*which*/) { + return u_isgraphPOSIX(c); +} + +static UBool isPOSIX_print(const BinaryProperty &/*prop*/, UChar32 c, UProperty /*which*/) { + return u_isprintPOSIX(c); +} + +static UBool isPOSIX_xdigit(const BinaryProperty &/*prop*/, UChar32 c, UProperty /*which*/) { + return u_isxdigit(c); +} + +static const BinaryProperty binProps[UCHAR_BINARY_LIMIT]={ + /* + * column and mask values for binary properties from u_getUnicodeProperties(). + * Must be in order of corresponding UProperty, + * and there must be exactly one entry per binary UProperty. + * + * Properties with mask==0 are handled in code. + * For them, column is the UPropertySource value. + */ + { 1, U_MASK(UPROPS_ALPHABETIC), defaultContains }, + { 1, U_MASK(UPROPS_ASCII_HEX_DIGIT), defaultContains }, + { UPROPS_SRC_BIDI, 0, isBidiControl }, + { UPROPS_SRC_BIDI, 0, isMirrored }, + { 1, U_MASK(UPROPS_DASH), defaultContains }, + { 1, U_MASK(UPROPS_DEFAULT_IGNORABLE_CODE_POINT), defaultContains }, + { 1, U_MASK(UPROPS_DEPRECATED), defaultContains }, + { 1, U_MASK(UPROPS_DIACRITIC), defaultContains }, + { 1, U_MASK(UPROPS_EXTENDER), defaultContains }, + { UPROPS_SRC_NFC, 0, hasFullCompositionExclusion }, + { 1, U_MASK(UPROPS_GRAPHEME_BASE), defaultContains }, + { 1, U_MASK(UPROPS_GRAPHEME_EXTEND), defaultContains }, + { 1, U_MASK(UPROPS_GRAPHEME_LINK), defaultContains }, + { 1, U_MASK(UPROPS_HEX_DIGIT), defaultContains }, + { 1, U_MASK(UPROPS_HYPHEN), defaultContains }, + { 1, U_MASK(UPROPS_ID_CONTINUE), defaultContains }, + { 1, U_MASK(UPROPS_ID_START), defaultContains }, + { 1, U_MASK(UPROPS_IDEOGRAPHIC), defaultContains }, + { 1, U_MASK(UPROPS_IDS_BINARY_OPERATOR), defaultContains }, + { 1, U_MASK(UPROPS_IDS_TRINARY_OPERATOR), defaultContains }, + { UPROPS_SRC_BIDI, 0, isJoinControl }, + { 1, U_MASK(UPROPS_LOGICAL_ORDER_EXCEPTION), defaultContains }, + { UPROPS_SRC_CASE, 0, caseBinaryPropertyContains }, // UCHAR_LOWERCASE + { 1, U_MASK(UPROPS_MATH), defaultContains }, + { 1, U_MASK(UPROPS_NONCHARACTER_CODE_POINT), defaultContains }, + { 1, U_MASK(UPROPS_QUOTATION_MARK), defaultContains }, + { 1, U_MASK(UPROPS_RADICAL), defaultContains }, + { UPROPS_SRC_CASE, 0, caseBinaryPropertyContains }, // UCHAR_SOFT_DOTTED + { 1, U_MASK(UPROPS_TERMINAL_PUNCTUATION), defaultContains }, + { 1, U_MASK(UPROPS_UNIFIED_IDEOGRAPH), defaultContains }, + { UPROPS_SRC_CASE, 0, caseBinaryPropertyContains }, // UCHAR_UPPERCASE + { 1, U_MASK(UPROPS_WHITE_SPACE), defaultContains }, + { 1, U_MASK(UPROPS_XID_CONTINUE), defaultContains }, + { 1, U_MASK(UPROPS_XID_START), defaultContains }, + { UPROPS_SRC_CASE, 0, caseBinaryPropertyContains }, // UCHAR_CASE_SENSITIVE + { 1, U_MASK(UPROPS_S_TERM), defaultContains }, + { 1, U_MASK(UPROPS_VARIATION_SELECTOR), defaultContains }, + { UPROPS_SRC_NFC, 0, isNormInert }, // UCHAR_NFD_INERT + { UPROPS_SRC_NFKC, 0, isNormInert }, // UCHAR_NFKD_INERT + { UPROPS_SRC_NFC, 0, isNormInert }, // UCHAR_NFC_INERT + { UPROPS_SRC_NFKC, 0, isNormInert }, // UCHAR_NFKC_INERT + { UPROPS_SRC_NFC_CANON_ITER, 0, isCanonSegmentStarter }, + { 1, U_MASK(UPROPS_PATTERN_SYNTAX), defaultContains }, + { 1, U_MASK(UPROPS_PATTERN_WHITE_SPACE), defaultContains }, + { UPROPS_SRC_CHAR_AND_PROPSVEC, 0, isPOSIX_alnum }, + { UPROPS_SRC_CHAR, 0, isPOSIX_blank }, + { UPROPS_SRC_CHAR, 0, isPOSIX_graph }, + { UPROPS_SRC_CHAR, 0, isPOSIX_print }, + { UPROPS_SRC_CHAR, 0, isPOSIX_xdigit }, + { UPROPS_SRC_CASE, 0, caseBinaryPropertyContains }, // UCHAR_CASED + { UPROPS_SRC_CASE, 0, caseBinaryPropertyContains }, // UCHAR_CASE_IGNORABLE + { UPROPS_SRC_CASE, 0, caseBinaryPropertyContains }, // UCHAR_CHANGES_WHEN_LOWERCASED + { UPROPS_SRC_CASE, 0, caseBinaryPropertyContains }, // UCHAR_CHANGES_WHEN_UPPERCASED + { UPROPS_SRC_CASE, 0, caseBinaryPropertyContains }, // UCHAR_CHANGES_WHEN_TITLECASED + { UPROPS_SRC_CASE_AND_NORM, 0, changesWhenCasefolded }, + { UPROPS_SRC_CASE, 0, caseBinaryPropertyContains }, // UCHAR_CHANGES_WHEN_CASEMAPPED + { UPROPS_SRC_NFKC_CF, 0, changesWhenNFKC_Casefolded }, + { 2, U_MASK(UPROPS_2_EMOJI), defaultContains }, + { 2, U_MASK(UPROPS_2_EMOJI_PRESENTATION), defaultContains }, + { 2, U_MASK(UPROPS_2_EMOJI_MODIFIER), defaultContains }, + { 2, U_MASK(UPROPS_2_EMOJI_MODIFIER_BASE), defaultContains }, +}; + +U_CAPI UBool U_EXPORT2 +u_hasBinaryProperty(UChar32 c, UProperty which) { + /* c is range-checked in the functions that are called from here */ + if(which<UCHAR_BINARY_START || UCHAR_BINARY_LIMIT<=which) { + /* not a known binary property */ + return FALSE; + } else { + const BinaryProperty &prop=binProps[which]; + return prop.contains(prop, c, which); + } +} + +struct IntProperty; + +typedef int32_t IntPropertyGetValue(const IntProperty &prop, UChar32 c, UProperty which); +typedef int32_t IntPropertyGetMaxValue(const IntProperty &prop, UProperty which); + +struct IntProperty { + int32_t column; // SRC_PROPSVEC column, or "source" if mask==0 + uint32_t mask; + int32_t shift; // =maxValue if getMaxValueFromShift() is used + IntPropertyGetValue *getValue; + IntPropertyGetMaxValue *getMaxValue; +}; + +static int32_t defaultGetValue(const IntProperty &prop, UChar32 c, UProperty /*which*/) { + /* systematic, directly stored properties */ + return (int32_t)(u_getUnicodeProperties(c, prop.column)&prop.mask)>>prop.shift; +} + +static int32_t defaultGetMaxValue(const IntProperty &prop, UProperty /*which*/) { + return (uprv_getMaxValues(prop.column)&prop.mask)>>prop.shift; +} + +static int32_t getMaxValueFromShift(const IntProperty &prop, UProperty /*which*/) { + return prop.shift; +} + +static int32_t getBiDiClass(const IntProperty &/*prop*/, UChar32 c, UProperty /*which*/) { + return (int32_t)u_charDirection(c); +} + +static int32_t getBiDiPairedBracketType(const IntProperty &/*prop*/, UChar32 c, UProperty /*which*/) { + return (int32_t)ubidi_getPairedBracketType(GET_BIDI_PROPS(), c); +} + +static int32_t biDiGetMaxValue(const IntProperty &/*prop*/, UProperty which) { + return ubidi_getMaxValue(GET_BIDI_PROPS(), which); +} + +#if UCONFIG_NO_NORMALIZATION +static int32_t getCombiningClass(const IntProperty &, UChar32, UProperty) { + return 0; +} +#else +static int32_t getCombiningClass(const IntProperty &/*prop*/, UChar32 c, UProperty /*which*/) { + return u_getCombiningClass(c); +} +#endif + +static int32_t getGeneralCategory(const IntProperty &/*prop*/, UChar32 c, UProperty /*which*/) { + return (int32_t)u_charType(c); +} + +static int32_t getJoiningGroup(const IntProperty &/*prop*/, UChar32 c, UProperty /*which*/) { + return ubidi_getJoiningGroup(GET_BIDI_PROPS(), c); +} + +static int32_t getJoiningType(const IntProperty &/*prop*/, UChar32 c, UProperty /*which*/) { + return ubidi_getJoiningType(GET_BIDI_PROPS(), c); +} + +static int32_t getNumericType(const IntProperty &/*prop*/, UChar32 c, UProperty /*which*/) { + int32_t ntv=(int32_t)GET_NUMERIC_TYPE_VALUE(u_getMainProperties(c)); + return UPROPS_NTV_GET_TYPE(ntv); +} + +static int32_t getScript(const IntProperty &/*prop*/, UChar32 c, UProperty /*which*/) { + UErrorCode errorCode=U_ZERO_ERROR; + return (int32_t)uscript_getScript(c, &errorCode); +} + +/* + * Map some of the Grapheme Cluster Break values to Hangul Syllable Types. + * Hangul_Syllable_Type is fully redundant with a subset of Grapheme_Cluster_Break. + */ +static const UHangulSyllableType gcbToHst[]={ + U_HST_NOT_APPLICABLE, /* U_GCB_OTHER */ + U_HST_NOT_APPLICABLE, /* U_GCB_CONTROL */ + U_HST_NOT_APPLICABLE, /* U_GCB_CR */ + U_HST_NOT_APPLICABLE, /* U_GCB_EXTEND */ + U_HST_LEADING_JAMO, /* U_GCB_L */ + U_HST_NOT_APPLICABLE, /* U_GCB_LF */ + U_HST_LV_SYLLABLE, /* U_GCB_LV */ + U_HST_LVT_SYLLABLE, /* U_GCB_LVT */ + U_HST_TRAILING_JAMO, /* U_GCB_T */ + U_HST_VOWEL_JAMO /* U_GCB_V */ + /* + * Omit GCB values beyond what we need for hst. + * The code below checks for the array length. + */ +}; + +static int32_t getHangulSyllableType(const IntProperty &/*prop*/, UChar32 c, UProperty /*which*/) { + /* see comments on gcbToHst[] above */ + int32_t gcb=(int32_t)(u_getUnicodeProperties(c, 2)&UPROPS_GCB_MASK)>>UPROPS_GCB_SHIFT; + if(gcb<UPRV_LENGTHOF(gcbToHst)) { + return gcbToHst[gcb]; + } else { + return U_HST_NOT_APPLICABLE; + } +} + +#if UCONFIG_NO_NORMALIZATION +static int32_t getNormQuickCheck(const IntProperty &, UChar32, UProperty) { + return 0; +} +#else +static int32_t getNormQuickCheck(const IntProperty &/*prop*/, UChar32 c, UProperty which) { + return (int32_t)unorm_getQuickCheck(c, (UNormalizationMode)(which-UCHAR_NFD_QUICK_CHECK+UNORM_NFD)); +} +#endif + +#if UCONFIG_NO_NORMALIZATION +static int32_t getLeadCombiningClass(const IntProperty &, UChar32, UProperty) { + return 0; +} +#else +static int32_t getLeadCombiningClass(const IntProperty &/*prop*/, UChar32 c, UProperty /*which*/) { + return unorm_getFCD16(c)>>8; +} +#endif + +#if UCONFIG_NO_NORMALIZATION +static int32_t getTrailCombiningClass(const IntProperty &, UChar32, UProperty) { + return 0; +} +#else +static int32_t getTrailCombiningClass(const IntProperty &/*prop*/, UChar32 c, UProperty /*which*/) { + return unorm_getFCD16(c)&0xff; +} +#endif + +static const IntProperty intProps[UCHAR_INT_LIMIT-UCHAR_INT_START]={ + /* + * column, mask and shift values for int-value properties from u_getUnicodeProperties(). + * Must be in order of corresponding UProperty, + * and there must be exactly one entry per int UProperty. + * + * Properties with mask==0 are handled in code. + * For them, column is the UPropertySource value. + */ + { UPROPS_SRC_BIDI, 0, 0, getBiDiClass, biDiGetMaxValue }, + { 0, UPROPS_BLOCK_MASK, UPROPS_BLOCK_SHIFT, defaultGetValue, defaultGetMaxValue }, + { UPROPS_SRC_NFC, 0, 0xff, getCombiningClass, getMaxValueFromShift }, + { 2, UPROPS_DT_MASK, 0, defaultGetValue, defaultGetMaxValue }, + { 0, UPROPS_EA_MASK, UPROPS_EA_SHIFT, defaultGetValue, defaultGetMaxValue }, + { UPROPS_SRC_CHAR, 0, (int32_t)U_CHAR_CATEGORY_COUNT-1,getGeneralCategory, getMaxValueFromShift }, + { UPROPS_SRC_BIDI, 0, 0, getJoiningGroup, biDiGetMaxValue }, + { UPROPS_SRC_BIDI, 0, 0, getJoiningType, biDiGetMaxValue }, + { 2, UPROPS_LB_MASK, UPROPS_LB_SHIFT, defaultGetValue, defaultGetMaxValue }, + { UPROPS_SRC_CHAR, 0, (int32_t)U_NT_COUNT-1, getNumericType, getMaxValueFromShift }, + { 0, UPROPS_SCRIPT_MASK, 0, getScript, defaultGetMaxValue }, + { UPROPS_SRC_PROPSVEC, 0, (int32_t)U_HST_COUNT-1, getHangulSyllableType, getMaxValueFromShift }, + // UCHAR_NFD_QUICK_CHECK: max=1=YES -- never "maybe", only "no" or "yes" + { UPROPS_SRC_NFC, 0, (int32_t)UNORM_YES, getNormQuickCheck, getMaxValueFromShift }, + // UCHAR_NFKD_QUICK_CHECK: max=1=YES -- never "maybe", only "no" or "yes" + { UPROPS_SRC_NFKC, 0, (int32_t)UNORM_YES, getNormQuickCheck, getMaxValueFromShift }, + // UCHAR_NFC_QUICK_CHECK: max=2=MAYBE + { UPROPS_SRC_NFC, 0, (int32_t)UNORM_MAYBE, getNormQuickCheck, getMaxValueFromShift }, + // UCHAR_NFKC_QUICK_CHECK: max=2=MAYBE + { UPROPS_SRC_NFKC, 0, (int32_t)UNORM_MAYBE, getNormQuickCheck, getMaxValueFromShift }, + { UPROPS_SRC_NFC, 0, 0xff, getLeadCombiningClass, getMaxValueFromShift }, + { UPROPS_SRC_NFC, 0, 0xff, getTrailCombiningClass, getMaxValueFromShift }, + { 2, UPROPS_GCB_MASK, UPROPS_GCB_SHIFT, defaultGetValue, defaultGetMaxValue }, + { 2, UPROPS_SB_MASK, UPROPS_SB_SHIFT, defaultGetValue, defaultGetMaxValue }, + { 2, UPROPS_WB_MASK, UPROPS_WB_SHIFT, defaultGetValue, defaultGetMaxValue }, + { UPROPS_SRC_BIDI, 0, 0, getBiDiPairedBracketType, biDiGetMaxValue }, +}; + +U_CAPI int32_t U_EXPORT2 +u_getIntPropertyValue(UChar32 c, UProperty which) { + if(which<UCHAR_INT_START) { + if(UCHAR_BINARY_START<=which && which<UCHAR_BINARY_LIMIT) { + const BinaryProperty &prop=binProps[which]; + return prop.contains(prop, c, which); + } + } else if(which<UCHAR_INT_LIMIT) { + const IntProperty &prop=intProps[which-UCHAR_INT_START]; + return prop.getValue(prop, c, which); + } else if(which==UCHAR_GENERAL_CATEGORY_MASK) { + return U_MASK(u_charType(c)); + } + return 0; // undefined +} + +U_CAPI int32_t U_EXPORT2 +u_getIntPropertyMinValue(UProperty /*which*/) { + return 0; /* all binary/enum/int properties have a minimum value of 0 */ +} + +U_CAPI int32_t U_EXPORT2 +u_getIntPropertyMaxValue(UProperty which) { + if(which<UCHAR_INT_START) { + if(UCHAR_BINARY_START<=which && which<UCHAR_BINARY_LIMIT) { + return 1; // maximum TRUE for all binary properties + } + } else if(which<UCHAR_INT_LIMIT) { + const IntProperty &prop=intProps[which-UCHAR_INT_START]; + return prop.getMaxValue(prop, which); + } + return -1; // undefined +} + +U_CFUNC UPropertySource U_EXPORT2 +uprops_getSource(UProperty which) { + if(which<UCHAR_BINARY_START) { + return UPROPS_SRC_NONE; /* undefined */ + } else if(which<UCHAR_BINARY_LIMIT) { + const BinaryProperty &prop=binProps[which]; + if(prop.mask!=0) { + return UPROPS_SRC_PROPSVEC; + } else { + return (UPropertySource)prop.column; + } + } else if(which<UCHAR_INT_START) { + return UPROPS_SRC_NONE; /* undefined */ + } else if(which<UCHAR_INT_LIMIT) { + const IntProperty &prop=intProps[which-UCHAR_INT_START]; + if(prop.mask!=0) { + return UPROPS_SRC_PROPSVEC; + } else { + return (UPropertySource)prop.column; + } + } else if(which<UCHAR_STRING_START) { + switch(which) { + case UCHAR_GENERAL_CATEGORY_MASK: + case UCHAR_NUMERIC_VALUE: + return UPROPS_SRC_CHAR; + + default: + return UPROPS_SRC_NONE; + } + } else if(which<UCHAR_STRING_LIMIT) { + switch(which) { + case UCHAR_AGE: + return UPROPS_SRC_PROPSVEC; + + case UCHAR_BIDI_MIRRORING_GLYPH: + return UPROPS_SRC_BIDI; + + case UCHAR_CASE_FOLDING: + case UCHAR_LOWERCASE_MAPPING: + case UCHAR_SIMPLE_CASE_FOLDING: + case UCHAR_SIMPLE_LOWERCASE_MAPPING: + case UCHAR_SIMPLE_TITLECASE_MAPPING: + case UCHAR_SIMPLE_UPPERCASE_MAPPING: + case UCHAR_TITLECASE_MAPPING: + case UCHAR_UPPERCASE_MAPPING: + return UPROPS_SRC_CASE; + + case UCHAR_ISO_COMMENT: + case UCHAR_NAME: + case UCHAR_UNICODE_1_NAME: + return UPROPS_SRC_NAMES; + + default: + return UPROPS_SRC_NONE; + } + } else { + switch(which) { + case UCHAR_SCRIPT_EXTENSIONS: + return UPROPS_SRC_PROPSVEC; + default: + return UPROPS_SRC_NONE; /* undefined */ + } + } +} + +#if !UCONFIG_NO_NORMALIZATION + +U_CAPI int32_t U_EXPORT2 +u_getFC_NFKC_Closure(UChar32 c, UChar *dest, int32_t destCapacity, UErrorCode *pErrorCode) { + if(pErrorCode==NULL || U_FAILURE(*pErrorCode)) { + return 0; + } + if(destCapacity<0 || (dest==NULL && destCapacity>0)) { + *pErrorCode=U_ILLEGAL_ARGUMENT_ERROR; + return 0; + } + // Compute the FC_NFKC_Closure on the fly: + // We have the API for complete coverage of Unicode properties, although + // this value by itself is not useful via API. + // (What could be useful is a custom normalization table that combines + // case folding and NFKC.) + // For the derivation, see Unicode's DerivedNormalizationProps.txt. + const Normalizer2 *nfkc=Normalizer2::getNFKCInstance(*pErrorCode); + const UCaseProps *csp=ucase_getSingleton(); + if(U_FAILURE(*pErrorCode)) { + return 0; + } + // first: b = NFKC(Fold(a)) + UnicodeString folded1String; + const UChar *folded1; + int32_t folded1Length=ucase_toFullFolding(csp, c, &folded1, U_FOLD_CASE_DEFAULT); + if(folded1Length<0) { + const Normalizer2Impl *nfkcImpl=Normalizer2Factory::getImpl(nfkc); + if(nfkcImpl->getCompQuickCheck(nfkcImpl->getNorm16(c))!=UNORM_NO) { + return u_terminateUChars(dest, destCapacity, 0, pErrorCode); // c does not change at all under CaseFolding+NFKC + } + folded1String.setTo(c); + } else { + if(folded1Length>UCASE_MAX_STRING_LENGTH) { + folded1String.setTo(folded1Length); + } else { + folded1String.setTo(FALSE, folded1, folded1Length); + } + } + UnicodeString kc1=nfkc->normalize(folded1String, *pErrorCode); + // second: c = NFKC(Fold(b)) + UnicodeString folded2String(kc1); + UnicodeString kc2=nfkc->normalize(folded2String.foldCase(), *pErrorCode); + // if (c != b) add the mapping from a to c + if(U_FAILURE(*pErrorCode) || kc1==kc2) { + return u_terminateUChars(dest, destCapacity, 0, pErrorCode); + } else { + return kc2.extract(dest, destCapacity, *pErrorCode); + } +} + +#endif |