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godot/thirdparty/icu4c/common/uprops.cpp

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// © 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 "unicode/utf16.h"
#include "cstring.h"
#include "emojiprops.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 UBool hasEmojiProperty(const BinaryProperty &/*prop*/, UChar32 c, UProperty which) {
return EmojiProps::hasBinaryProperty(c, which);
}
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 },
{ UPROPS_SRC_EMOJI, 0, hasEmojiProperty }, // UCHAR_EMOJI
{ UPROPS_SRC_EMOJI, 0, hasEmojiProperty }, // UCHAR_EMOJI_PRESENTATION
{ UPROPS_SRC_EMOJI, 0, hasEmojiProperty }, // UCHAR_EMOJI_MODIFIER
{ UPROPS_SRC_EMOJI, 0, hasEmojiProperty }, // UCHAR_EMOJI_MODIFIER_BASE
{ UPROPS_SRC_EMOJI, 0, hasEmojiProperty }, // UCHAR_EMOJI_COMPONENT
{ 2, 0, isRegionalIndicator },
{ 1, U_MASK(UPROPS_PREPENDED_CONCATENATION_MARK), defaultContains },
{ UPROPS_SRC_EMOJI, 0, hasEmojiProperty }, // UCHAR_EXTENDED_PICTOGRAPHIC
{ UPROPS_SRC_EMOJI, 0, hasEmojiProperty }, // UCHAR_BASIC_EMOJI
{ UPROPS_SRC_EMOJI, 0, hasEmojiProperty }, // UCHAR_EMOJI_KEYCAP_SEQUENCE
{ UPROPS_SRC_EMOJI, 0, hasEmojiProperty }, // UCHAR_RGI_EMOJI_MODIFIER_SEQUENCE
{ UPROPS_SRC_EMOJI, 0, hasEmojiProperty }, // UCHAR_RGI_EMOJI_FLAG_SEQUENCE
{ UPROPS_SRC_EMOJI, 0, hasEmojiProperty }, // UCHAR_RGI_EMOJI_TAG_SEQUENCE
{ UPROPS_SRC_EMOJI, 0, hasEmojiProperty }, // UCHAR_RGI_EMOJI_ZWJ_SEQUENCE
{ UPROPS_SRC_EMOJI, 0, hasEmojiProperty }, // UCHAR_RGI_EMOJI
};
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);
}
}
U_CAPI UBool U_EXPORT2
u_stringHasBinaryProperty(const UChar *s, int32_t length, UProperty which) {
if (s == nullptr && length != 0) { return false; }
if (length == 1) {
return u_hasBinaryProperty(s[0], which); // single code point
} else if (length == 2 || (length < 0 && *s != 0)) { // not empty string
// first code point
int32_t i = 0;
UChar32 c;
U16_NEXT(s, i, length, c);
if (length > 0 ? i == length : s[i] == 0) {
return u_hasBinaryProperty(c, which); // single code point
}
}
// Only call into EmojiProps for a relevant property,
// so that we not unnecessarily try to load its data file.
return UCHAR_BASIC_EMOJI <= which && which <= UCHAR_RGI_EMOJI &&
EmojiProps::hasBinaryProperty(s, length, 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
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