910 lines
32 KiB
C++
910 lines
32 KiB
C++
/*
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*******************************************************************************
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*
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* Copyright (C) 2009-2011, International Business Machines
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* Corporation and others. All Rights Reserved.
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*
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*******************************************************************************
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* file name: normalizer2.cpp
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* encoding: US-ASCII
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* tab size: 8 (not used)
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* indentation:4
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*
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* created on: 2009nov22
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* created by: Markus W. Scherer
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*/
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#include "unicode/utypes.h"
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#if !UCONFIG_NO_NORMALIZATION
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#include "unicode/localpointer.h"
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#include "unicode/normalizer2.h"
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#include "unicode/unistr.h"
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#include "unicode/unorm.h"
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#include "cpputils.h"
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#include "cstring.h"
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#include "mutex.h"
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#include "normalizer2impl.h"
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#include "ucln_cmn.h"
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#include "uhash.h"
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U_NAMESPACE_BEGIN
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// Public API dispatch via Normalizer2 subclasses -------------------------- ***
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// Normalizer2 implementation for the old UNORM_NONE.
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class NoopNormalizer2 : public Normalizer2 {
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virtual UnicodeString &
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normalize(const UnicodeString &src,
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UnicodeString &dest,
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UErrorCode &errorCode) const {
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if(U_SUCCESS(errorCode)) {
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if(&dest!=&src) {
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dest=src;
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} else {
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errorCode=U_ILLEGAL_ARGUMENT_ERROR;
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}
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}
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return dest;
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}
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virtual UnicodeString &
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normalizeSecondAndAppend(UnicodeString &first,
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const UnicodeString &second,
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UErrorCode &errorCode) const {
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if(U_SUCCESS(errorCode)) {
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if(&first!=&second) {
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first.append(second);
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} else {
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errorCode=U_ILLEGAL_ARGUMENT_ERROR;
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}
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}
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return first;
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}
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virtual UnicodeString &
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append(UnicodeString &first,
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const UnicodeString &second,
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UErrorCode &errorCode) const {
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if(U_SUCCESS(errorCode)) {
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if(&first!=&second) {
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first.append(second);
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} else {
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errorCode=U_ILLEGAL_ARGUMENT_ERROR;
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}
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}
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return first;
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}
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virtual UBool
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getDecomposition(UChar32, UnicodeString &) const {
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return FALSE;
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}
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virtual UBool
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isNormalized(const UnicodeString &, UErrorCode &) const {
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return TRUE;
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}
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virtual UNormalizationCheckResult
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quickCheck(const UnicodeString &, UErrorCode &) const {
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return UNORM_YES;
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}
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virtual int32_t
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spanQuickCheckYes(const UnicodeString &s, UErrorCode &) const {
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return s.length();
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}
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virtual UBool hasBoundaryBefore(UChar32) const { return TRUE; }
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virtual UBool hasBoundaryAfter(UChar32) const { return TRUE; }
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virtual UBool isInert(UChar32) const { return TRUE; }
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};
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// Intermediate class:
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// Has Normalizer2Impl and does boilerplate argument checking and setup.
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class Normalizer2WithImpl : public Normalizer2 {
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public:
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Normalizer2WithImpl(const Normalizer2Impl &ni) : impl(ni) {}
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// normalize
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virtual UnicodeString &
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normalize(const UnicodeString &src,
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UnicodeString &dest,
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UErrorCode &errorCode) const {
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if(U_FAILURE(errorCode)) {
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dest.setToBogus();
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return dest;
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}
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const UChar *sArray=src.getBuffer();
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if(&dest==&src || sArray==NULL) {
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errorCode=U_ILLEGAL_ARGUMENT_ERROR;
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dest.setToBogus();
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return dest;
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}
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dest.remove();
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ReorderingBuffer buffer(impl, dest);
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if(buffer.init(src.length(), errorCode)) {
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normalize(sArray, sArray+src.length(), buffer, errorCode);
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}
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return dest;
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}
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virtual void
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normalize(const UChar *src, const UChar *limit,
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ReorderingBuffer &buffer, UErrorCode &errorCode) const = 0;
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// normalize and append
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virtual UnicodeString &
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normalizeSecondAndAppend(UnicodeString &first,
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const UnicodeString &second,
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UErrorCode &errorCode) const {
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return normalizeSecondAndAppend(first, second, TRUE, errorCode);
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}
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virtual UnicodeString &
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append(UnicodeString &first,
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const UnicodeString &second,
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UErrorCode &errorCode) const {
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return normalizeSecondAndAppend(first, second, FALSE, errorCode);
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}
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UnicodeString &
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normalizeSecondAndAppend(UnicodeString &first,
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const UnicodeString &second,
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UBool doNormalize,
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UErrorCode &errorCode) const {
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uprv_checkCanGetBuffer(first, errorCode);
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if(U_FAILURE(errorCode)) {
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return first;
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}
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const UChar *secondArray=second.getBuffer();
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if(&first==&second || secondArray==NULL) {
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errorCode=U_ILLEGAL_ARGUMENT_ERROR;
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return first;
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}
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int32_t firstLength=first.length();
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UnicodeString safeMiddle;
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{
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ReorderingBuffer buffer(impl, first);
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if(buffer.init(firstLength+second.length(), errorCode)) {
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normalizeAndAppend(secondArray, secondArray+second.length(), doNormalize,
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safeMiddle, buffer, errorCode);
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}
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} // The ReorderingBuffer destructor finalizes the first string.
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if(U_FAILURE(errorCode)) {
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// Restore the modified suffix of the first string.
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first.replace(firstLength-safeMiddle.length(), 0x7fffffff, safeMiddle);
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}
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return first;
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}
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virtual void
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normalizeAndAppend(const UChar *src, const UChar *limit, UBool doNormalize,
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UnicodeString &safeMiddle,
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ReorderingBuffer &buffer, UErrorCode &errorCode) const = 0;
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virtual UBool
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getDecomposition(UChar32 c, UnicodeString &decomposition) const {
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UChar buffer[4];
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int32_t length;
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const UChar *d=impl.getDecomposition(c, buffer, length);
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if(d==NULL) {
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return FALSE;
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}
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if(d==buffer) {
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decomposition.setTo(buffer, length); // copy the string (Jamos from Hangul syllable c)
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} else {
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decomposition.setTo(FALSE, d, length); // read-only alias
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}
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return TRUE;
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}
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virtual uint8_t
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getCombiningClass(UChar32 c) const {
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return impl.getCC(impl.getNorm16(c));
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}
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// quick checks
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virtual UBool
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isNormalized(const UnicodeString &s, UErrorCode &errorCode) const {
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if(U_FAILURE(errorCode)) {
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return FALSE;
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}
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const UChar *sArray=s.getBuffer();
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if(sArray==NULL) {
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errorCode=U_ILLEGAL_ARGUMENT_ERROR;
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return FALSE;
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}
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const UChar *sLimit=sArray+s.length();
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return sLimit==spanQuickCheckYes(sArray, sLimit, errorCode);
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}
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virtual UNormalizationCheckResult
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quickCheck(const UnicodeString &s, UErrorCode &errorCode) const {
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return Normalizer2WithImpl::isNormalized(s, errorCode) ? UNORM_YES : UNORM_NO;
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}
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virtual int32_t
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spanQuickCheckYes(const UnicodeString &s, UErrorCode &errorCode) const {
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if(U_FAILURE(errorCode)) {
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return 0;
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}
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const UChar *sArray=s.getBuffer();
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if(sArray==NULL) {
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errorCode=U_ILLEGAL_ARGUMENT_ERROR;
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return 0;
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}
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return (int32_t)(spanQuickCheckYes(sArray, sArray+s.length(), errorCode)-sArray);
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}
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virtual const UChar *
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spanQuickCheckYes(const UChar *src, const UChar *limit, UErrorCode &errorCode) const = 0;
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virtual UNormalizationCheckResult getQuickCheck(UChar32) const {
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return UNORM_YES;
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}
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const Normalizer2Impl &impl;
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};
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class DecomposeNormalizer2 : public Normalizer2WithImpl {
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public:
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DecomposeNormalizer2(const Normalizer2Impl &ni) : Normalizer2WithImpl(ni) {}
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private:
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virtual void
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normalize(const UChar *src, const UChar *limit,
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ReorderingBuffer &buffer, UErrorCode &errorCode) const {
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impl.decompose(src, limit, &buffer, errorCode);
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}
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using Normalizer2WithImpl::normalize; // Avoid warning about hiding base class function.
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virtual void
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normalizeAndAppend(const UChar *src, const UChar *limit, UBool doNormalize,
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UnicodeString &safeMiddle,
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ReorderingBuffer &buffer, UErrorCode &errorCode) const {
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impl.decomposeAndAppend(src, limit, doNormalize, safeMiddle, buffer, errorCode);
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}
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virtual const UChar *
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spanQuickCheckYes(const UChar *src, const UChar *limit, UErrorCode &errorCode) const {
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return impl.decompose(src, limit, NULL, errorCode);
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}
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using Normalizer2WithImpl::spanQuickCheckYes; // Avoid warning about hiding base class function.
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virtual UNormalizationCheckResult getQuickCheck(UChar32 c) const {
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return impl.isDecompYes(impl.getNorm16(c)) ? UNORM_YES : UNORM_NO;
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}
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virtual UBool hasBoundaryBefore(UChar32 c) const { return impl.hasDecompBoundary(c, TRUE); }
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virtual UBool hasBoundaryAfter(UChar32 c) const { return impl.hasDecompBoundary(c, FALSE); }
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virtual UBool isInert(UChar32 c) const { return impl.isDecompInert(c); }
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};
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class ComposeNormalizer2 : public Normalizer2WithImpl {
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public:
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ComposeNormalizer2(const Normalizer2Impl &ni, UBool fcc) :
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Normalizer2WithImpl(ni), onlyContiguous(fcc) {}
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private:
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virtual void
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normalize(const UChar *src, const UChar *limit,
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ReorderingBuffer &buffer, UErrorCode &errorCode) const {
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impl.compose(src, limit, onlyContiguous, TRUE, buffer, errorCode);
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}
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using Normalizer2WithImpl::normalize; // Avoid warning about hiding base class function.
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virtual void
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normalizeAndAppend(const UChar *src, const UChar *limit, UBool doNormalize,
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UnicodeString &safeMiddle,
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ReorderingBuffer &buffer, UErrorCode &errorCode) const {
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impl.composeAndAppend(src, limit, doNormalize, onlyContiguous, safeMiddle, buffer, errorCode);
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}
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virtual UBool
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isNormalized(const UnicodeString &s, UErrorCode &errorCode) const {
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if(U_FAILURE(errorCode)) {
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return FALSE;
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}
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const UChar *sArray=s.getBuffer();
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if(sArray==NULL) {
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errorCode=U_ILLEGAL_ARGUMENT_ERROR;
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return FALSE;
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}
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UnicodeString temp;
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ReorderingBuffer buffer(impl, temp);
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if(!buffer.init(5, errorCode)) { // small destCapacity for substring normalization
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return FALSE;
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}
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return impl.compose(sArray, sArray+s.length(), onlyContiguous, FALSE, buffer, errorCode);
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}
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virtual UNormalizationCheckResult
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quickCheck(const UnicodeString &s, UErrorCode &errorCode) const {
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if(U_FAILURE(errorCode)) {
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return UNORM_MAYBE;
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}
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const UChar *sArray=s.getBuffer();
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if(sArray==NULL) {
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errorCode=U_ILLEGAL_ARGUMENT_ERROR;
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return UNORM_MAYBE;
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}
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UNormalizationCheckResult qcResult=UNORM_YES;
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impl.composeQuickCheck(sArray, sArray+s.length(), onlyContiguous, &qcResult);
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return qcResult;
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}
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virtual const UChar *
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spanQuickCheckYes(const UChar *src, const UChar *limit, UErrorCode &) const {
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return impl.composeQuickCheck(src, limit, onlyContiguous, NULL);
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}
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using Normalizer2WithImpl::spanQuickCheckYes; // Avoid warning about hiding base class function.
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virtual UNormalizationCheckResult getQuickCheck(UChar32 c) const {
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return impl.getCompQuickCheck(impl.getNorm16(c));
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}
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virtual UBool hasBoundaryBefore(UChar32 c) const {
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return impl.hasCompBoundaryBefore(c);
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}
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virtual UBool hasBoundaryAfter(UChar32 c) const {
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return impl.hasCompBoundaryAfter(c, onlyContiguous, FALSE);
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}
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virtual UBool isInert(UChar32 c) const {
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return impl.hasCompBoundaryAfter(c, onlyContiguous, TRUE);
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}
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const UBool onlyContiguous;
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};
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class FCDNormalizer2 : public Normalizer2WithImpl {
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public:
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FCDNormalizer2(const Normalizer2Impl &ni) : Normalizer2WithImpl(ni) {}
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private:
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virtual void
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normalize(const UChar *src, const UChar *limit,
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ReorderingBuffer &buffer, UErrorCode &errorCode) const {
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impl.makeFCD(src, limit, &buffer, errorCode);
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}
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using Normalizer2WithImpl::normalize; // Avoid warning about hiding base class function.
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virtual void
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normalizeAndAppend(const UChar *src, const UChar *limit, UBool doNormalize,
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UnicodeString &safeMiddle,
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ReorderingBuffer &buffer, UErrorCode &errorCode) const {
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impl.makeFCDAndAppend(src, limit, doNormalize, safeMiddle, buffer, errorCode);
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}
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virtual const UChar *
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spanQuickCheckYes(const UChar *src, const UChar *limit, UErrorCode &errorCode) const {
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return impl.makeFCD(src, limit, NULL, errorCode);
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}
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using Normalizer2WithImpl::spanQuickCheckYes; // Avoid warning about hiding base class function.
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virtual UBool hasBoundaryBefore(UChar32 c) const { return impl.hasFCDBoundaryBefore(c); }
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virtual UBool hasBoundaryAfter(UChar32 c) const { return impl.hasFCDBoundaryAfter(c); }
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virtual UBool isInert(UChar32 c) const { return impl.isFCDInert(c); }
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};
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// instance cache ---------------------------------------------------------- ***
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struct Norm2AllModes : public UMemory {
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static Norm2AllModes *createInstance(const char *packageName,
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const char *name,
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UErrorCode &errorCode);
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Norm2AllModes() : comp(impl, FALSE), decomp(impl), fcd(impl), fcc(impl, TRUE) {}
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Normalizer2Impl impl;
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ComposeNormalizer2 comp;
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DecomposeNormalizer2 decomp;
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FCDNormalizer2 fcd;
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ComposeNormalizer2 fcc;
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};
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Norm2AllModes *
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Norm2AllModes::createInstance(const char *packageName,
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const char *name,
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UErrorCode &errorCode) {
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if(U_FAILURE(errorCode)) {
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return NULL;
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}
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LocalPointer<Norm2AllModes> allModes(new Norm2AllModes);
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if(allModes.isNull()) {
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errorCode=U_MEMORY_ALLOCATION_ERROR;
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return NULL;
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}
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allModes->impl.load(packageName, name, errorCode);
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return U_SUCCESS(errorCode) ? allModes.orphan() : NULL;
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}
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U_CDECL_BEGIN
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static UBool U_CALLCONV uprv_normalizer2_cleanup();
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U_CDECL_END
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class Norm2AllModesSingleton : public TriStateSingletonWrapper<Norm2AllModes> {
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public:
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Norm2AllModesSingleton(TriStateSingleton &s, const char *n) :
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TriStateSingletonWrapper<Norm2AllModes>(s), name(n) {}
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Norm2AllModes *getInstance(UErrorCode &errorCode) {
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return TriStateSingletonWrapper<Norm2AllModes>::getInstance(createInstance, name, errorCode);
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}
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private:
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static void *createInstance(const void *context, UErrorCode &errorCode) {
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ucln_common_registerCleanup(UCLN_COMMON_NORMALIZER2, uprv_normalizer2_cleanup);
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return Norm2AllModes::createInstance(NULL, (const char *)context, errorCode);
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}
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const char *name;
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};
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STATIC_TRI_STATE_SINGLETON(nfcSingleton);
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STATIC_TRI_STATE_SINGLETON(nfkcSingleton);
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STATIC_TRI_STATE_SINGLETON(nfkc_cfSingleton);
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class Norm2Singleton : public SimpleSingletonWrapper<Normalizer2> {
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public:
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Norm2Singleton(SimpleSingleton &s) : SimpleSingletonWrapper<Normalizer2>(s) {}
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Normalizer2 *getInstance(UErrorCode &errorCode) {
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return SimpleSingletonWrapper<Normalizer2>::getInstance(createInstance, NULL, errorCode);
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}
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private:
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static void *createInstance(const void *, UErrorCode &errorCode) {
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Normalizer2 *noop=new NoopNormalizer2;
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if(noop==NULL) {
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errorCode=U_MEMORY_ALLOCATION_ERROR;
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}
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ucln_common_registerCleanup(UCLN_COMMON_NORMALIZER2, uprv_normalizer2_cleanup);
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return noop;
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}
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};
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STATIC_SIMPLE_SINGLETON(noopSingleton);
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static UHashtable *cache=NULL;
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U_CDECL_BEGIN
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static void U_CALLCONV deleteNorm2AllModes(void *allModes) {
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delete (Norm2AllModes *)allModes;
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}
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static UBool U_CALLCONV uprv_normalizer2_cleanup() {
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Norm2AllModesSingleton(nfcSingleton, NULL).deleteInstance();
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Norm2AllModesSingleton(nfkcSingleton, NULL).deleteInstance();
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Norm2AllModesSingleton(nfkc_cfSingleton, NULL).deleteInstance();
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Norm2Singleton(noopSingleton).deleteInstance();
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uhash_close(cache);
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cache=NULL;
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return TRUE;
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}
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U_CDECL_END
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const Normalizer2 *Normalizer2Factory::getNFCInstance(UErrorCode &errorCode) {
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Norm2AllModes *allModes=Norm2AllModesSingleton(nfcSingleton, "nfc").getInstance(errorCode);
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return allModes!=NULL ? &allModes->comp : NULL;
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}
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const Normalizer2 *Normalizer2Factory::getNFDInstance(UErrorCode &errorCode) {
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Norm2AllModes *allModes=Norm2AllModesSingleton(nfcSingleton, "nfc").getInstance(errorCode);
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return allModes!=NULL ? &allModes->decomp : NULL;
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}
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const Normalizer2 *Normalizer2Factory::getFCDInstance(UErrorCode &errorCode) {
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Norm2AllModes *allModes=Norm2AllModesSingleton(nfcSingleton, "nfc").getInstance(errorCode);
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if(allModes!=NULL) {
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allModes->impl.getFCDTrie(errorCode);
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return &allModes->fcd;
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} else {
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return NULL;
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}
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}
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const Normalizer2 *Normalizer2Factory::getFCCInstance(UErrorCode &errorCode) {
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Norm2AllModes *allModes=Norm2AllModesSingleton(nfcSingleton, "nfc").getInstance(errorCode);
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return allModes!=NULL ? &allModes->fcc : NULL;
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}
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const Normalizer2 *Normalizer2Factory::getNFKCInstance(UErrorCode &errorCode) {
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Norm2AllModes *allModes=
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Norm2AllModesSingleton(nfkcSingleton, "nfkc").getInstance(errorCode);
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return allModes!=NULL ? &allModes->comp : NULL;
|
|
}
|
|
|
|
const Normalizer2 *Normalizer2Factory::getNFKDInstance(UErrorCode &errorCode) {
|
|
Norm2AllModes *allModes=
|
|
Norm2AllModesSingleton(nfkcSingleton, "nfkc").getInstance(errorCode);
|
|
return allModes!=NULL ? &allModes->decomp : NULL;
|
|
}
|
|
|
|
const Normalizer2 *Normalizer2Factory::getNFKC_CFInstance(UErrorCode &errorCode) {
|
|
Norm2AllModes *allModes=
|
|
Norm2AllModesSingleton(nfkc_cfSingleton, "nfkc_cf").getInstance(errorCode);
|
|
return allModes!=NULL ? &allModes->comp : NULL;
|
|
}
|
|
|
|
const Normalizer2 *Normalizer2Factory::getNoopInstance(UErrorCode &errorCode) {
|
|
return Norm2Singleton(noopSingleton).getInstance(errorCode);
|
|
}
|
|
|
|
const Normalizer2 *
|
|
Normalizer2Factory::getInstance(UNormalizationMode mode, UErrorCode &errorCode) {
|
|
if(U_FAILURE(errorCode)) {
|
|
return NULL;
|
|
}
|
|
switch(mode) {
|
|
case UNORM_NFD:
|
|
return getNFDInstance(errorCode);
|
|
case UNORM_NFKD:
|
|
return getNFKDInstance(errorCode);
|
|
case UNORM_NFC:
|
|
return getNFCInstance(errorCode);
|
|
case UNORM_NFKC:
|
|
return getNFKCInstance(errorCode);
|
|
case UNORM_FCD:
|
|
return getFCDInstance(errorCode);
|
|
default: // UNORM_NONE
|
|
return getNoopInstance(errorCode);
|
|
}
|
|
}
|
|
|
|
const Normalizer2Impl *
|
|
Normalizer2Factory::getNFCImpl(UErrorCode &errorCode) {
|
|
Norm2AllModes *allModes=
|
|
Norm2AllModesSingleton(nfcSingleton, "nfc").getInstance(errorCode);
|
|
return allModes!=NULL ? &allModes->impl : NULL;
|
|
}
|
|
|
|
const Normalizer2Impl *
|
|
Normalizer2Factory::getNFKCImpl(UErrorCode &errorCode) {
|
|
Norm2AllModes *allModes=
|
|
Norm2AllModesSingleton(nfkcSingleton, "nfkc").getInstance(errorCode);
|
|
return allModes!=NULL ? &allModes->impl : NULL;
|
|
}
|
|
|
|
const Normalizer2Impl *
|
|
Normalizer2Factory::getNFKC_CFImpl(UErrorCode &errorCode) {
|
|
Norm2AllModes *allModes=
|
|
Norm2AllModesSingleton(nfkc_cfSingleton, "nfkc_cf").getInstance(errorCode);
|
|
return allModes!=NULL ? &allModes->impl : NULL;
|
|
}
|
|
|
|
const Normalizer2Impl *
|
|
Normalizer2Factory::getImpl(const Normalizer2 *norm2) {
|
|
return &((Normalizer2WithImpl *)norm2)->impl;
|
|
}
|
|
|
|
const UTrie2 *
|
|
Normalizer2Factory::getFCDTrie(UErrorCode &errorCode) {
|
|
Norm2AllModes *allModes=
|
|
Norm2AllModesSingleton(nfcSingleton, "nfc").getInstance(errorCode);
|
|
if(allModes!=NULL) {
|
|
return allModes->impl.getFCDTrie(errorCode);
|
|
} else {
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
const Normalizer2 *
|
|
Normalizer2::getInstance(const char *packageName,
|
|
const char *name,
|
|
UNormalization2Mode mode,
|
|
UErrorCode &errorCode) {
|
|
if(U_FAILURE(errorCode)) {
|
|
return NULL;
|
|
}
|
|
if(name==NULL || *name==0) {
|
|
errorCode=U_ILLEGAL_ARGUMENT_ERROR;
|
|
}
|
|
Norm2AllModes *allModes=NULL;
|
|
if(packageName==NULL) {
|
|
if(0==uprv_strcmp(name, "nfc")) {
|
|
allModes=Norm2AllModesSingleton(nfcSingleton, "nfc").getInstance(errorCode);
|
|
} else if(0==uprv_strcmp(name, "nfkc")) {
|
|
allModes=Norm2AllModesSingleton(nfkcSingleton, "nfkc").getInstance(errorCode);
|
|
} else if(0==uprv_strcmp(name, "nfkc_cf")) {
|
|
allModes=Norm2AllModesSingleton(nfkc_cfSingleton, "nfkc_cf").getInstance(errorCode);
|
|
}
|
|
}
|
|
if(allModes==NULL && U_SUCCESS(errorCode)) {
|
|
{
|
|
Mutex lock;
|
|
if(cache!=NULL) {
|
|
allModes=(Norm2AllModes *)uhash_get(cache, name);
|
|
}
|
|
}
|
|
if(allModes==NULL) {
|
|
LocalPointer<Norm2AllModes> localAllModes(
|
|
Norm2AllModes::createInstance(packageName, name, errorCode));
|
|
if(U_SUCCESS(errorCode)) {
|
|
Mutex lock;
|
|
if(cache==NULL) {
|
|
cache=uhash_open(uhash_hashChars, uhash_compareChars, NULL, &errorCode);
|
|
if(U_FAILURE(errorCode)) {
|
|
return NULL;
|
|
}
|
|
uhash_setKeyDeleter(cache, uprv_free);
|
|
uhash_setValueDeleter(cache, deleteNorm2AllModes);
|
|
}
|
|
void *temp=uhash_get(cache, name);
|
|
if(temp==NULL) {
|
|
int32_t keyLength=uprv_strlen(name)+1;
|
|
char *nameCopy=(char *)uprv_malloc(keyLength);
|
|
if(nameCopy==NULL) {
|
|
errorCode=U_MEMORY_ALLOCATION_ERROR;
|
|
return NULL;
|
|
}
|
|
uprv_memcpy(nameCopy, name, keyLength);
|
|
uhash_put(cache, nameCopy, allModes=localAllModes.orphan(), &errorCode);
|
|
} else {
|
|
// race condition
|
|
allModes=(Norm2AllModes *)temp;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
if(allModes!=NULL && U_SUCCESS(errorCode)) {
|
|
switch(mode) {
|
|
case UNORM2_COMPOSE:
|
|
return &allModes->comp;
|
|
case UNORM2_DECOMPOSE:
|
|
return &allModes->decomp;
|
|
case UNORM2_FCD:
|
|
allModes->impl.getFCDTrie(errorCode);
|
|
return &allModes->fcd;
|
|
case UNORM2_COMPOSE_CONTIGUOUS:
|
|
return &allModes->fcc;
|
|
default:
|
|
break; // do nothing
|
|
}
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
uint8_t
|
|
Normalizer2::getCombiningClass(UChar32 /*c*/) const {
|
|
return 0;
|
|
}
|
|
|
|
UOBJECT_DEFINE_NO_RTTI_IMPLEMENTATION(Normalizer2)
|
|
|
|
U_NAMESPACE_END
|
|
|
|
// C API ------------------------------------------------------------------- ***
|
|
|
|
U_NAMESPACE_USE
|
|
|
|
U_DRAFT const UNormalizer2 * U_EXPORT2
|
|
unorm2_getInstance(const char *packageName,
|
|
const char *name,
|
|
UNormalization2Mode mode,
|
|
UErrorCode *pErrorCode) {
|
|
return (const UNormalizer2 *)Normalizer2::getInstance(packageName, name, mode, *pErrorCode);
|
|
}
|
|
|
|
U_DRAFT void U_EXPORT2
|
|
unorm2_close(UNormalizer2 *norm2) {
|
|
delete (Normalizer2 *)norm2;
|
|
}
|
|
|
|
U_DRAFT int32_t U_EXPORT2
|
|
unorm2_normalize(const UNormalizer2 *norm2,
|
|
const UChar *src, int32_t length,
|
|
UChar *dest, int32_t capacity,
|
|
UErrorCode *pErrorCode) {
|
|
if(U_FAILURE(*pErrorCode)) {
|
|
return 0;
|
|
}
|
|
if( (src==NULL ? length!=0 : length<-1) ||
|
|
(dest==NULL ? capacity!=0 : capacity<0) ||
|
|
(src==dest && src!=NULL)
|
|
) {
|
|
*pErrorCode=U_ILLEGAL_ARGUMENT_ERROR;
|
|
return 0;
|
|
}
|
|
UnicodeString destString(dest, 0, capacity);
|
|
// length==0: Nothing to do, and n2wi->normalize(NULL, NULL, buffer, ...) would crash.
|
|
if(length!=0) {
|
|
const Normalizer2 *n2=(const Normalizer2 *)norm2;
|
|
const Normalizer2WithImpl *n2wi=dynamic_cast<const Normalizer2WithImpl *>(n2);
|
|
if(n2wi!=NULL) {
|
|
// Avoid duplicate argument checking and support NUL-terminated src.
|
|
ReorderingBuffer buffer(n2wi->impl, destString);
|
|
if(buffer.init(length, *pErrorCode)) {
|
|
n2wi->normalize(src, length>=0 ? src+length : NULL, buffer, *pErrorCode);
|
|
}
|
|
} else {
|
|
UnicodeString srcString(length<0, src, length);
|
|
n2->normalize(srcString, destString, *pErrorCode);
|
|
}
|
|
}
|
|
return destString.extract(dest, capacity, *pErrorCode);
|
|
}
|
|
|
|
static int32_t
|
|
normalizeSecondAndAppend(const UNormalizer2 *norm2,
|
|
UChar *first, int32_t firstLength, int32_t firstCapacity,
|
|
const UChar *second, int32_t secondLength,
|
|
UBool doNormalize,
|
|
UErrorCode *pErrorCode) {
|
|
if(U_FAILURE(*pErrorCode)) {
|
|
return 0;
|
|
}
|
|
if( (second==NULL ? secondLength!=0 : secondLength<-1) ||
|
|
(first==NULL ? (firstCapacity!=0 || firstLength!=0) :
|
|
(firstCapacity<0 || firstLength<-1)) ||
|
|
(first==second && first!=NULL)
|
|
) {
|
|
*pErrorCode=U_ILLEGAL_ARGUMENT_ERROR;
|
|
return 0;
|
|
}
|
|
UnicodeString firstString(first, firstLength, firstCapacity);
|
|
firstLength=firstString.length(); // In case it was -1.
|
|
// secondLength==0: Nothing to do, and n2wi->normalizeAndAppend(NULL, NULL, buffer, ...) would crash.
|
|
if(secondLength!=0) {
|
|
const Normalizer2 *n2=(const Normalizer2 *)norm2;
|
|
const Normalizer2WithImpl *n2wi=dynamic_cast<const Normalizer2WithImpl *>(n2);
|
|
if(n2wi!=NULL) {
|
|
// Avoid duplicate argument checking and support NUL-terminated src.
|
|
UnicodeString safeMiddle;
|
|
{
|
|
ReorderingBuffer buffer(n2wi->impl, firstString);
|
|
if(buffer.init(firstLength+secondLength+1, *pErrorCode)) { // destCapacity>=-1
|
|
n2wi->normalizeAndAppend(second, secondLength>=0 ? second+secondLength : NULL,
|
|
doNormalize, safeMiddle, buffer, *pErrorCode);
|
|
}
|
|
} // The ReorderingBuffer destructor finalizes firstString.
|
|
if(U_FAILURE(*pErrorCode) || firstString.length()>firstCapacity) {
|
|
// Restore the modified suffix of the first string.
|
|
// This does not restore first[] array contents between firstLength and firstCapacity.
|
|
// (That might be uninitialized memory, as far as we know.)
|
|
safeMiddle.extract(0, 0x7fffffff, first+firstLength-safeMiddle.length());
|
|
if(firstLength<firstCapacity) {
|
|
first[firstLength]=0; // NUL-terminate in case it was originally.
|
|
}
|
|
}
|
|
} else {
|
|
UnicodeString secondString(secondLength<0, second, secondLength);
|
|
if(doNormalize) {
|
|
n2->normalizeSecondAndAppend(firstString, secondString, *pErrorCode);
|
|
} else {
|
|
n2->append(firstString, secondString, *pErrorCode);
|
|
}
|
|
}
|
|
}
|
|
return firstString.extract(first, firstCapacity, *pErrorCode);
|
|
}
|
|
|
|
U_DRAFT int32_t U_EXPORT2
|
|
unorm2_normalizeSecondAndAppend(const UNormalizer2 *norm2,
|
|
UChar *first, int32_t firstLength, int32_t firstCapacity,
|
|
const UChar *second, int32_t secondLength,
|
|
UErrorCode *pErrorCode) {
|
|
return normalizeSecondAndAppend(norm2,
|
|
first, firstLength, firstCapacity,
|
|
second, secondLength,
|
|
TRUE, pErrorCode);
|
|
}
|
|
|
|
U_DRAFT int32_t U_EXPORT2
|
|
unorm2_append(const UNormalizer2 *norm2,
|
|
UChar *first, int32_t firstLength, int32_t firstCapacity,
|
|
const UChar *second, int32_t secondLength,
|
|
UErrorCode *pErrorCode) {
|
|
return normalizeSecondAndAppend(norm2,
|
|
first, firstLength, firstCapacity,
|
|
second, secondLength,
|
|
FALSE, pErrorCode);
|
|
}
|
|
|
|
U_DRAFT int32_t U_EXPORT2
|
|
unorm2_getDecomposition(const UNormalizer2 *norm2,
|
|
UChar32 c, UChar *decomposition, int32_t capacity,
|
|
UErrorCode *pErrorCode) {
|
|
if(U_FAILURE(*pErrorCode)) {
|
|
return 0;
|
|
}
|
|
if(decomposition==NULL ? capacity!=0 : capacity<0) {
|
|
*pErrorCode=U_ILLEGAL_ARGUMENT_ERROR;
|
|
return 0;
|
|
}
|
|
UnicodeString destString(decomposition, 0, capacity);
|
|
if(reinterpret_cast<const Normalizer2 *>(norm2)->getDecomposition(c, destString)) {
|
|
return destString.extract(decomposition, capacity, *pErrorCode);
|
|
} else {
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
U_DRAFT uint8_t U_EXPORT2
|
|
unorm2_getCombiningClass(const UNormalizer2 *norm2, UChar32 c) {
|
|
return reinterpret_cast<const Normalizer2 *>(norm2)->getCombiningClass(c);
|
|
}
|
|
|
|
U_DRAFT UBool U_EXPORT2
|
|
unorm2_isNormalized(const UNormalizer2 *norm2,
|
|
const UChar *s, int32_t length,
|
|
UErrorCode *pErrorCode) {
|
|
if(U_FAILURE(*pErrorCode)) {
|
|
return 0;
|
|
}
|
|
if((s==NULL && length!=0) || length<-1) {
|
|
*pErrorCode=U_ILLEGAL_ARGUMENT_ERROR;
|
|
return 0;
|
|
}
|
|
UnicodeString sString(length<0, s, length);
|
|
return ((const Normalizer2 *)norm2)->isNormalized(sString, *pErrorCode);
|
|
}
|
|
|
|
U_DRAFT UNormalizationCheckResult U_EXPORT2
|
|
unorm2_quickCheck(const UNormalizer2 *norm2,
|
|
const UChar *s, int32_t length,
|
|
UErrorCode *pErrorCode) {
|
|
if(U_FAILURE(*pErrorCode)) {
|
|
return UNORM_NO;
|
|
}
|
|
if((s==NULL && length!=0) || length<-1) {
|
|
*pErrorCode=U_ILLEGAL_ARGUMENT_ERROR;
|
|
return UNORM_NO;
|
|
}
|
|
UnicodeString sString(length<0, s, length);
|
|
return ((const Normalizer2 *)norm2)->quickCheck(sString, *pErrorCode);
|
|
}
|
|
|
|
U_DRAFT int32_t U_EXPORT2
|
|
unorm2_spanQuickCheckYes(const UNormalizer2 *norm2,
|
|
const UChar *s, int32_t length,
|
|
UErrorCode *pErrorCode) {
|
|
if(U_FAILURE(*pErrorCode)) {
|
|
return 0;
|
|
}
|
|
if((s==NULL && length!=0) || length<-1) {
|
|
*pErrorCode=U_ILLEGAL_ARGUMENT_ERROR;
|
|
return 0;
|
|
}
|
|
UnicodeString sString(length<0, s, length);
|
|
return ((const Normalizer2 *)norm2)->spanQuickCheckYes(sString, *pErrorCode);
|
|
}
|
|
|
|
U_DRAFT UBool U_EXPORT2
|
|
unorm2_hasBoundaryBefore(const UNormalizer2 *norm2, UChar32 c) {
|
|
return ((const Normalizer2 *)norm2)->hasBoundaryBefore(c);
|
|
}
|
|
|
|
U_DRAFT UBool U_EXPORT2
|
|
unorm2_hasBoundaryAfter(const UNormalizer2 *norm2, UChar32 c) {
|
|
return ((const Normalizer2 *)norm2)->hasBoundaryAfter(c);
|
|
}
|
|
|
|
U_DRAFT UBool U_EXPORT2
|
|
unorm2_isInert(const UNormalizer2 *norm2, UChar32 c) {
|
|
return ((const Normalizer2 *)norm2)->isInert(c);
|
|
}
|
|
|
|
// Some properties APIs ---------------------------------------------------- ***
|
|
|
|
U_CAPI uint8_t U_EXPORT2
|
|
u_getCombiningClass(UChar32 c) {
|
|
UErrorCode errorCode=U_ZERO_ERROR;
|
|
const Normalizer2 *nfd=Normalizer2Factory::getNFDInstance(errorCode);
|
|
if(U_SUCCESS(errorCode)) {
|
|
return nfd->getCombiningClass(c);
|
|
} else {
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
U_CFUNC UNormalizationCheckResult
|
|
unorm_getQuickCheck(UChar32 c, UNormalizationMode mode) {
|
|
if(mode<=UNORM_NONE || UNORM_FCD<=mode) {
|
|
return UNORM_YES;
|
|
}
|
|
UErrorCode errorCode=U_ZERO_ERROR;
|
|
const Normalizer2 *norm2=Normalizer2Factory::getInstance(mode, errorCode);
|
|
if(U_SUCCESS(errorCode)) {
|
|
return ((const Normalizer2WithImpl *)norm2)->getQuickCheck(c);
|
|
} else {
|
|
return UNORM_MAYBE;
|
|
}
|
|
}
|
|
|
|
U_CFUNC uint16_t
|
|
unorm_getFCD16Simple(UChar32 c) {
|
|
UErrorCode errorCode=U_ZERO_ERROR;
|
|
const UTrie2 *trie=Normalizer2Factory::getFCDTrie(errorCode);
|
|
if(U_SUCCESS(errorCode)) {
|
|
return UTRIE2_GET16(trie, c);
|
|
} else {
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
U_CAPI const uint16_t * U_EXPORT2
|
|
unorm_getFCDTrieIndex(UChar32 &fcdHighStart, UErrorCode *pErrorCode) {
|
|
const UTrie2 *trie=Normalizer2Factory::getFCDTrie(*pErrorCode);
|
|
if(U_SUCCESS(*pErrorCode)) {
|
|
fcdHighStart=trie->highStart;
|
|
return trie->index;
|
|
} else {
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
#endif // !UCONFIG_NO_NORMALIZATION
|