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Diffstat (limited to 'thirdparty/icu4c/common/uprops.cpp')
| -rw-r--r-- | thirdparty/icu4c/common/uprops.cpp | 797 |
1 files changed, 797 insertions, 0 deletions
diff --git a/thirdparty/icu4c/common/uprops.cpp b/thirdparty/icu4c/common/uprops.cpp new file mode 100644 index 0000000000..1604ad9a17 --- /dev/null +++ b/thirdparty/icu4c/common/uprops.cpp @@ -0,0 +1,797 @@ +// © 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: UTF-8 +* 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/ucptrie.h" +#include "unicode/udata.h" +#include "unicode/unorm2.h" +#include "unicode/uscript.h" +#include "unicode/ustring.h" +#include "cstring.h" +#include "mutex.h" +#include "normalizer2impl.h" +#include "umutex.h" +#include "ubidi_props.h" +#include "uprops.h" +#include "ucase.h" +#include "ucln_cmn.h" +#include "ulayout_props.h" +#include "ustr_imp.h" + +U_NAMESPACE_USE + +// Unicode text layout properties data ----------------------------------------- + +namespace { + +icu::UInitOnce gLayoutInitOnce = U_INITONCE_INITIALIZER; +UDataMemory *gLayoutMemory = nullptr; + +UCPTrie *gInpcTrie = nullptr; // Indic_Positional_Category +UCPTrie *gInscTrie = nullptr; // Indic_Syllabic_Category +UCPTrie *gVoTrie = nullptr; // Vertical_Orientation + +int32_t gMaxInpcValue = 0; +int32_t gMaxInscValue = 0; +int32_t gMaxVoValue = 0; + +UBool U_CALLCONV uprops_cleanup() { + udata_close(gLayoutMemory); + gLayoutMemory = nullptr; + + ucptrie_close(gInpcTrie); + gInpcTrie = nullptr; + ucptrie_close(gInscTrie); + gInscTrie = nullptr; + ucptrie_close(gVoTrie); + gVoTrie = nullptr; + + gMaxInpcValue = 0; + gMaxInscValue = 0; + gMaxVoValue = 0; + + gLayoutInitOnce.reset(); + return TRUE; +} + +UBool U_CALLCONV +ulayout_isAcceptable(void * /*context*/, + const char * /* type */, const char * /*name*/, + const UDataInfo *pInfo) { + return pInfo->size >= 20 && + pInfo->isBigEndian == U_IS_BIG_ENDIAN && + pInfo->charsetFamily == U_CHARSET_FAMILY && + pInfo->dataFormat[0] == ULAYOUT_FMT_0 && + pInfo->dataFormat[1] == ULAYOUT_FMT_1 && + pInfo->dataFormat[2] == ULAYOUT_FMT_2 && + pInfo->dataFormat[3] == ULAYOUT_FMT_3 && + pInfo->formatVersion[0] == 1; +} + +// UInitOnce singleton initialization function +void U_CALLCONV ulayout_load(UErrorCode &errorCode) { + gLayoutMemory = udata_openChoice( + nullptr, ULAYOUT_DATA_TYPE, ULAYOUT_DATA_NAME, + ulayout_isAcceptable, nullptr, &errorCode); + if (U_FAILURE(errorCode)) { return; } + + const uint8_t *inBytes = (const uint8_t *)udata_getMemory(gLayoutMemory); + const int32_t *inIndexes = (const int32_t *)inBytes; + int32_t indexesLength = inIndexes[ULAYOUT_IX_INDEXES_LENGTH]; + if (indexesLength < 12) { + errorCode = U_INVALID_FORMAT_ERROR; // Not enough indexes. + return; + } + int32_t offset = indexesLength * 4; + int32_t top = inIndexes[ULAYOUT_IX_INPC_TRIE_TOP]; + int32_t trieSize = top - offset; + if (trieSize >= 16) { + gInpcTrie = ucptrie_openFromBinary( + UCPTRIE_TYPE_ANY, UCPTRIE_VALUE_BITS_ANY, + inBytes + offset, trieSize, nullptr, &errorCode); + } + offset = top; + top = inIndexes[ULAYOUT_IX_INSC_TRIE_TOP]; + trieSize = top - offset; + if (trieSize >= 16) { + gInscTrie = ucptrie_openFromBinary( + UCPTRIE_TYPE_ANY, UCPTRIE_VALUE_BITS_ANY, + inBytes + offset, trieSize, nullptr, &errorCode); + } + offset = top; + top = inIndexes[ULAYOUT_IX_VO_TRIE_TOP]; + trieSize = top - offset; + if (trieSize >= 16) { + gVoTrie = ucptrie_openFromBinary( + UCPTRIE_TYPE_ANY, UCPTRIE_VALUE_BITS_ANY, + inBytes + offset, trieSize, nullptr, &errorCode); + } + + uint32_t maxValues = inIndexes[ULAYOUT_IX_MAX_VALUES]; + gMaxInpcValue = maxValues >> ULAYOUT_MAX_INPC_SHIFT; + gMaxInscValue = (maxValues >> ULAYOUT_MAX_INSC_SHIFT) & 0xff; + gMaxVoValue = (maxValues >> ULAYOUT_MAX_VO_SHIFT) & 0xff; + + ucln_common_registerCleanup(UCLN_COMMON_UPROPS, uprops_cleanup); +} + +UBool ulayout_ensureData(UErrorCode &errorCode) { + if (U_FAILURE(errorCode)) { return FALSE; } + umtx_initOnce(gLayoutInitOnce, &ulayout_load, errorCode); + return U_SUCCESS(errorCode); +} + +UBool ulayout_ensureData() { + UErrorCode errorCode = U_ZERO_ERROR; + return ulayout_ensureData(errorCode); +} + +} // namespace + +/* 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 static_cast<UBool>(ucase_hasBinaryProperty(c, which)); +} + +static UBool isBidiControl(const BinaryProperty &/*prop*/, UChar32 c, UProperty /*which*/) { + return ubidi_isBidiControl(c); +} + +static UBool isMirrored(const BinaryProperty &/*prop*/, UChar32 c, UProperty /*which*/) { + return ubidi_isMirrored(c); +} + +static UBool isJoinControl(const BinaryProperty &/*prop*/, UChar32 c, UProperty /*which*/) { + return ubidi_isJoinControl(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 UChar *resultString; + return (UBool)(ucase_toFullFolding(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 UBool isRegionalIndicator(const BinaryProperty &/*prop*/, UChar32 c, UProperty /*which*/) { + // Property starts are a subset of lb=RI etc. + return 0x1F1E6<=c && c<=0x1F1FF; +} + +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 }, + { 2, U_MASK(UPROPS_2_EMOJI_COMPONENT), defaultContains }, + { 2, 0, isRegionalIndicator }, + { 1, U_MASK(UPROPS_PREPENDED_CONCATENATION_MARK), defaultContains }, + { 2, U_MASK(UPROPS_2_EXTENDED_PICTOGRAPHIC), 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(c); +} + +static int32_t biDiGetMaxValue(const IntProperty &/*prop*/, UProperty which) { + return ubidi_getMaxValue(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(c); +} + +static int32_t getJoiningType(const IntProperty &/*prop*/, UChar32 c, UProperty /*which*/) { + return ubidi_getJoiningType(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); +} + +static int32_t scriptGetMaxValue(const IntProperty &/*prop*/, UProperty /*which*/) { + uint32_t scriptX=uprv_getMaxValues(0)&UPROPS_SCRIPT_X_MASK; + return uprops_mergeScriptCodeOrIndex(scriptX); +} + +/* + * 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 int32_t getInPC(const IntProperty &, UChar32 c, UProperty) { + return ulayout_ensureData() && gInpcTrie != nullptr ? ucptrie_get(gInpcTrie, c) : 0; +} + +static int32_t getInSC(const IntProperty &, UChar32 c, UProperty) { + return ulayout_ensureData() && gInscTrie != nullptr ? ucptrie_get(gInscTrie, c) : 0; +} + +static int32_t getVo(const IntProperty &, UChar32 c, UProperty) { + return ulayout_ensureData() && gVoTrie != nullptr ? ucptrie_get(gVoTrie, c) : 0; +} + +static int32_t layoutGetMaxValue(const IntProperty &/*prop*/, UProperty which) { + if (!ulayout_ensureData()) { return 0; } + switch (which) { + case UCHAR_INDIC_POSITIONAL_CATEGORY: + return gMaxInpcValue; + case UCHAR_INDIC_SYLLABIC_CATEGORY: + return gMaxInscValue; + case UCHAR_VERTICAL_ORIENTATION: + return gMaxVoValue; + default: + return 0; + } +} + +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 }, + { UPROPS_SRC_PROPSVEC, 0, 0, getScript, scriptGetMaxValue }, + { 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 }, + { UPROPS_SRC_INPC, 0, 0, getInPC, layoutGetMaxValue }, + { UPROPS_SRC_INSC, 0, 0, getInSC, layoutGetMaxValue }, + { UPROPS_SRC_VO, 0, 0, getVo, layoutGetMaxValue }, +}; + +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 */ + } + } +} + +U_CFUNC void U_EXPORT2 +uprops_addPropertyStarts(UPropertySource src, const USetAdder *sa, UErrorCode *pErrorCode) { + if (!ulayout_ensureData(*pErrorCode)) { return; } + const UCPTrie *trie; + switch (src) { + case UPROPS_SRC_INPC: + trie = gInpcTrie; + break; + case UPROPS_SRC_INSC: + trie = gInscTrie; + break; + case UPROPS_SRC_VO: + trie = gVoTrie; + break; + default: + *pErrorCode = U_ILLEGAL_ARGUMENT_ERROR; + return; + } + + if (trie == nullptr) { + *pErrorCode = U_MISSING_RESOURCE_ERROR; + return; + } + + // Add the start code point of each same-value range of the trie. + UChar32 start = 0, end; + while ((end = ucptrie_getRange(trie, start, UCPMAP_RANGE_NORMAL, 0, + nullptr, nullptr, nullptr)) >= 0) { + sa->add(sa->set, start); + start = end + 1; + } +} + +#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); + if(U_FAILURE(*pErrorCode)) { + return 0; + } + // first: b = NFKC(Fold(a)) + UnicodeString folded1String; + const UChar *folded1; + int32_t folded1Length=ucase_toFullFolding(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 |