573 lines
18 KiB
C++
573 lines
18 KiB
C++
// © 2016 and later: Unicode, Inc. and others.
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// License & terms of use: http://www.unicode.org/copyright.html
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/*
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*******************************************************************************
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*
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* Copyright (C) 2009-2016, 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: UTF-8
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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/edits.h"
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#include "unicode/normalizer2.h"
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#include "unicode/stringoptions.h"
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#include "unicode/unistr.h"
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#include "unicode/unorm.h"
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#include "cstring.h"
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#include "mutex.h"
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#include "norm2allmodes.h"
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#include "normalizer2impl.h"
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#include "uassert.h"
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#include "ucln_cmn.h"
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using icu::Normalizer2Impl;
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#if NORM2_HARDCODE_NFC_DATA
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// NFC/NFD data machine-generated by gennorm2 --csource
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#define INCLUDED_FROM_NORMALIZER2_CPP
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#include "norm2_nfc_data.h"
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#endif
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U_NAMESPACE_BEGIN
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// Public API dispatch via Normalizer2 subclasses -------------------------- ***
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Normalizer2::~Normalizer2() {}
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void
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Normalizer2::normalizeUTF8(uint32_t /*options*/, StringPiece src, ByteSink &sink,
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Edits *edits, UErrorCode &errorCode) const {
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if (U_FAILURE(errorCode)) {
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return;
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}
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if (edits != nullptr) {
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errorCode = U_UNSUPPORTED_ERROR;
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return;
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}
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UnicodeString src16 = UnicodeString::fromUTF8(src);
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normalize(src16, errorCode).toUTF8(sink);
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}
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UBool
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Normalizer2::getRawDecomposition(UChar32, UnicodeString &) const {
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return false;
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}
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UChar32
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Normalizer2::composePair(UChar32, UChar32) const {
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return U_SENTINEL;
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}
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uint8_t
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Normalizer2::getCombiningClass(UChar32 /*c*/) const {
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return 0;
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}
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UBool
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Normalizer2::isNormalizedUTF8(StringPiece s, UErrorCode &errorCode) const {
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return U_SUCCESS(errorCode) && isNormalized(UnicodeString::fromUTF8(s), errorCode);
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}
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// Normalizer2 implementation for the old UNORM_NONE.
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class NoopNormalizer2 : public Normalizer2 {
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virtual ~NoopNormalizer2();
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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 U_OVERRIDE {
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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 void
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normalizeUTF8(uint32_t options, StringPiece src, ByteSink &sink,
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Edits *edits, UErrorCode &errorCode) const U_OVERRIDE {
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if(U_SUCCESS(errorCode)) {
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if (edits != nullptr) {
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if ((options & U_EDITS_NO_RESET) == 0) {
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edits->reset();
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}
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edits->addUnchanged(src.length());
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}
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if ((options & U_OMIT_UNCHANGED_TEXT) == 0) {
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sink.Append(src.data(), src.length());
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}
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sink.Flush();
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}
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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 U_OVERRIDE {
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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 U_OVERRIDE {
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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 U_OVERRIDE {
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return false;
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}
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// No need to U_OVERRIDE the default getRawDecomposition().
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virtual UBool
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isNormalized(const UnicodeString &, UErrorCode &errorCode) const U_OVERRIDE {
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return U_SUCCESS(errorCode);
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}
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virtual UBool
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isNormalizedUTF8(StringPiece, UErrorCode &errorCode) const U_OVERRIDE {
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return U_SUCCESS(errorCode);
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}
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virtual UNormalizationCheckResult
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quickCheck(const UnicodeString &, UErrorCode &) const U_OVERRIDE {
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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 U_OVERRIDE {
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return s.length();
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}
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virtual UBool hasBoundaryBefore(UChar32) const U_OVERRIDE { return true; }
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virtual UBool hasBoundaryAfter(UChar32) const U_OVERRIDE { return true; }
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virtual UBool isInert(UChar32) const U_OVERRIDE { return true; }
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};
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NoopNormalizer2::~NoopNormalizer2() {}
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Normalizer2WithImpl::~Normalizer2WithImpl() {}
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DecomposeNormalizer2::~DecomposeNormalizer2() {}
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ComposeNormalizer2::~ComposeNormalizer2() {}
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FCDNormalizer2::~FCDNormalizer2() {}
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// instance cache ---------------------------------------------------------- ***
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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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static Normalizer2 *noopSingleton;
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static icu::UInitOnce noopInitOnce {};
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static void U_CALLCONV initNoopSingleton(UErrorCode &errorCode) {
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if(U_FAILURE(errorCode)) {
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return;
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}
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noopSingleton=new NoopNormalizer2;
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if(noopSingleton==NULL) {
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errorCode=U_MEMORY_ALLOCATION_ERROR;
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return;
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}
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ucln_common_registerCleanup(UCLN_COMMON_NORMALIZER2, uprv_normalizer2_cleanup);
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}
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const Normalizer2 *Normalizer2Factory::getNoopInstance(UErrorCode &errorCode) {
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if(U_FAILURE(errorCode)) { return NULL; }
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umtx_initOnce(noopInitOnce, &initNoopSingleton, errorCode);
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return noopSingleton;
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}
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const Normalizer2Impl *
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Normalizer2Factory::getImpl(const Normalizer2 *norm2) {
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return &((Normalizer2WithImpl *)norm2)->impl;
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}
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Norm2AllModes::~Norm2AllModes() {
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delete impl;
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}
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Norm2AllModes *
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Norm2AllModes::createInstance(Normalizer2Impl *impl, UErrorCode &errorCode) {
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if(U_FAILURE(errorCode)) {
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delete impl;
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return NULL;
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}
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Norm2AllModes *allModes=new Norm2AllModes(impl);
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if(allModes==NULL) {
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errorCode=U_MEMORY_ALLOCATION_ERROR;
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delete impl;
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return NULL;
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}
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return allModes;
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}
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#if NORM2_HARDCODE_NFC_DATA
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Norm2AllModes *
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Norm2AllModes::createNFCInstance(UErrorCode &errorCode) {
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if(U_FAILURE(errorCode)) {
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return NULL;
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}
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Normalizer2Impl *impl=new Normalizer2Impl;
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if(impl==NULL) {
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errorCode=U_MEMORY_ALLOCATION_ERROR;
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return NULL;
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}
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impl->init(norm2_nfc_data_indexes, &norm2_nfc_data_trie,
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norm2_nfc_data_extraData, norm2_nfc_data_smallFCD);
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return createInstance(impl, errorCode);
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}
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static Norm2AllModes *nfcSingleton;
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static icu::UInitOnce nfcInitOnce {};
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static void U_CALLCONV initNFCSingleton(UErrorCode &errorCode) {
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nfcSingleton=Norm2AllModes::createNFCInstance(errorCode);
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ucln_common_registerCleanup(UCLN_COMMON_NORMALIZER2, uprv_normalizer2_cleanup);
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}
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const Norm2AllModes *
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Norm2AllModes::getNFCInstance(UErrorCode &errorCode) {
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if(U_FAILURE(errorCode)) { return NULL; }
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umtx_initOnce(nfcInitOnce, &initNFCSingleton, errorCode);
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return nfcSingleton;
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}
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const Normalizer2 *
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Normalizer2::getNFCInstance(UErrorCode &errorCode) {
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const Norm2AllModes *allModes=Norm2AllModes::getNFCInstance(errorCode);
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return allModes!=NULL ? &allModes->comp : NULL;
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}
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const Normalizer2 *
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Normalizer2::getNFDInstance(UErrorCode &errorCode) {
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const Norm2AllModes *allModes=Norm2AllModes::getNFCInstance(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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const Norm2AllModes *allModes=Norm2AllModes::getNFCInstance(errorCode);
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return allModes!=NULL ? &allModes->fcd : NULL;
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}
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const Normalizer2 *Normalizer2Factory::getFCCInstance(UErrorCode &errorCode) {
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const Norm2AllModes *allModes=Norm2AllModes::getNFCInstance(errorCode);
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return allModes!=NULL ? &allModes->fcc : NULL;
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}
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const Normalizer2Impl *
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Normalizer2Factory::getNFCImpl(UErrorCode &errorCode) {
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const Norm2AllModes *allModes=Norm2AllModes::getNFCInstance(errorCode);
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return allModes!=NULL ? allModes->impl : NULL;
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}
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#endif // NORM2_HARDCODE_NFC_DATA
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U_CDECL_BEGIN
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static UBool U_CALLCONV uprv_normalizer2_cleanup() {
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delete noopSingleton;
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noopSingleton = NULL;
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noopInitOnce.reset();
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#if NORM2_HARDCODE_NFC_DATA
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delete nfcSingleton;
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nfcSingleton = NULL;
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nfcInitOnce.reset();
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#endif
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return true;
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}
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U_CDECL_END
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U_NAMESPACE_END
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// C API ------------------------------------------------------------------- ***
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U_NAMESPACE_USE
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U_CAPI const UNormalizer2 * U_EXPORT2
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unorm2_getNFCInstance(UErrorCode *pErrorCode) {
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return (const UNormalizer2 *)Normalizer2::getNFCInstance(*pErrorCode);
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}
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U_CAPI const UNormalizer2 * U_EXPORT2
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unorm2_getNFDInstance(UErrorCode *pErrorCode) {
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return (const UNormalizer2 *)Normalizer2::getNFDInstance(*pErrorCode);
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}
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U_CAPI void U_EXPORT2
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unorm2_close(UNormalizer2 *norm2) {
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delete (Normalizer2 *)norm2;
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}
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U_CAPI int32_t U_EXPORT2
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unorm2_normalize(const UNormalizer2 *norm2,
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const UChar *src, int32_t length,
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UChar *dest, int32_t capacity,
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UErrorCode *pErrorCode) {
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if(U_FAILURE(*pErrorCode)) {
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return 0;
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}
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if( (src==NULL ? length!=0 : length<-1) ||
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(dest==NULL ? capacity!=0 : capacity<0) ||
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(src==dest && src!=NULL)
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) {
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*pErrorCode=U_ILLEGAL_ARGUMENT_ERROR;
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return 0;
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}
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UnicodeString destString(dest, 0, capacity);
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// length==0: Nothing to do, and n2wi->normalize(NULL, NULL, buffer, ...) would crash.
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if(length!=0) {
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const Normalizer2 *n2=(const Normalizer2 *)norm2;
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const Normalizer2WithImpl *n2wi=dynamic_cast<const Normalizer2WithImpl *>(n2);
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if(n2wi!=NULL) {
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// Avoid duplicate argument checking and support NUL-terminated src.
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ReorderingBuffer buffer(n2wi->impl, destString);
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if(buffer.init(length, *pErrorCode)) {
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n2wi->normalize(src, length>=0 ? src+length : NULL, buffer, *pErrorCode);
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}
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} else {
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UnicodeString srcString(length<0, src, length);
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n2->normalize(srcString, destString, *pErrorCode);
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}
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}
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return destString.extract(dest, capacity, *pErrorCode);
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}
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static int32_t
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normalizeSecondAndAppend(const UNormalizer2 *norm2,
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UChar *first, int32_t firstLength, int32_t firstCapacity,
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const UChar *second, int32_t secondLength,
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UBool doNormalize,
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UErrorCode *pErrorCode) {
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if(U_FAILURE(*pErrorCode)) {
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return 0;
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}
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if( (second==NULL ? secondLength!=0 : secondLength<-1) ||
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(first==NULL ? (firstCapacity!=0 || firstLength!=0) :
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(firstCapacity<0 || firstLength<-1)) ||
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(first==second && first!=NULL)
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) {
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*pErrorCode=U_ILLEGAL_ARGUMENT_ERROR;
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return 0;
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}
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UnicodeString firstString(first, firstLength, firstCapacity);
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firstLength=firstString.length(); // In case it was -1.
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// secondLength==0: Nothing to do, and n2wi->normalizeAndAppend(NULL, NULL, buffer, ...) would crash.
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if(secondLength!=0) {
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const Normalizer2 *n2=(const Normalizer2 *)norm2;
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const Normalizer2WithImpl *n2wi=dynamic_cast<const Normalizer2WithImpl *>(n2);
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if(n2wi!=NULL) {
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// Avoid duplicate argument checking and support NUL-terminated src.
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UnicodeString safeMiddle;
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{
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ReorderingBuffer buffer(n2wi->impl, firstString);
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if(buffer.init(firstLength+secondLength+1, *pErrorCode)) { // destCapacity>=-1
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n2wi->normalizeAndAppend(second, secondLength>=0 ? second+secondLength : NULL,
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doNormalize, safeMiddle, buffer, *pErrorCode);
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}
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} // The ReorderingBuffer destructor finalizes firstString.
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if(U_FAILURE(*pErrorCode) || firstString.length()>firstCapacity) {
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// Restore the modified suffix of the first string.
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// This does not restore first[] array contents between firstLength and firstCapacity.
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// (That might be uninitialized memory, as far as we know.)
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if(first!=NULL) { /* don't dereference NULL */
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safeMiddle.extract(0, 0x7fffffff, first+firstLength-safeMiddle.length());
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if(firstLength<firstCapacity) {
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first[firstLength]=0; // NUL-terminate in case it was originally.
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}
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}
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}
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} else {
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UnicodeString secondString(secondLength<0, second, secondLength);
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if(doNormalize) {
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n2->normalizeSecondAndAppend(firstString, secondString, *pErrorCode);
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} else {
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n2->append(firstString, secondString, *pErrorCode);
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}
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}
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}
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return firstString.extract(first, firstCapacity, *pErrorCode);
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}
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U_CAPI int32_t U_EXPORT2
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unorm2_normalizeSecondAndAppend(const UNormalizer2 *norm2,
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UChar *first, int32_t firstLength, int32_t firstCapacity,
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const UChar *second, int32_t secondLength,
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UErrorCode *pErrorCode) {
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return normalizeSecondAndAppend(norm2,
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first, firstLength, firstCapacity,
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second, secondLength,
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true, pErrorCode);
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}
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U_CAPI int32_t U_EXPORT2
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unorm2_append(const UNormalizer2 *norm2,
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UChar *first, int32_t firstLength, int32_t firstCapacity,
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const UChar *second, int32_t secondLength,
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UErrorCode *pErrorCode) {
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return normalizeSecondAndAppend(norm2,
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first, firstLength, firstCapacity,
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second, secondLength,
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false, pErrorCode);
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}
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U_CAPI int32_t U_EXPORT2
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unorm2_getDecomposition(const UNormalizer2 *norm2,
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UChar32 c, UChar *decomposition, int32_t capacity,
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UErrorCode *pErrorCode) {
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if(U_FAILURE(*pErrorCode)) {
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return 0;
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}
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if(decomposition==NULL ? capacity!=0 : capacity<0) {
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*pErrorCode=U_ILLEGAL_ARGUMENT_ERROR;
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return 0;
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}
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UnicodeString destString(decomposition, 0, capacity);
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if(reinterpret_cast<const Normalizer2 *>(norm2)->getDecomposition(c, destString)) {
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return destString.extract(decomposition, capacity, *pErrorCode);
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} else {
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return -1;
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}
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}
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U_CAPI int32_t U_EXPORT2
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unorm2_getRawDecomposition(const UNormalizer2 *norm2,
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UChar32 c, UChar *decomposition, int32_t capacity,
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UErrorCode *pErrorCode) {
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if(U_FAILURE(*pErrorCode)) {
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return 0;
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}
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if(decomposition==NULL ? capacity!=0 : capacity<0) {
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*pErrorCode=U_ILLEGAL_ARGUMENT_ERROR;
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return 0;
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}
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UnicodeString destString(decomposition, 0, capacity);
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if(reinterpret_cast<const Normalizer2 *>(norm2)->getRawDecomposition(c, destString)) {
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return destString.extract(decomposition, capacity, *pErrorCode);
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} else {
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return -1;
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}
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}
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U_CAPI UChar32 U_EXPORT2
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unorm2_composePair(const UNormalizer2 *norm2, UChar32 a, UChar32 b) {
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return reinterpret_cast<const Normalizer2 *>(norm2)->composePair(a, b);
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}
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U_CAPI uint8_t U_EXPORT2
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unorm2_getCombiningClass(const UNormalizer2 *norm2, UChar32 c) {
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return reinterpret_cast<const Normalizer2 *>(norm2)->getCombiningClass(c);
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}
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U_CAPI UBool U_EXPORT2
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unorm2_isNormalized(const UNormalizer2 *norm2,
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const UChar *s, int32_t length,
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UErrorCode *pErrorCode) {
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if(U_FAILURE(*pErrorCode)) {
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return 0;
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}
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if((s==NULL && length!=0) || length<-1) {
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*pErrorCode=U_ILLEGAL_ARGUMENT_ERROR;
|
|
return 0;
|
|
}
|
|
UnicodeString sString(length<0, s, length);
|
|
return ((const Normalizer2 *)norm2)->isNormalized(sString, *pErrorCode);
|
|
}
|
|
|
|
U_CAPI 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_CAPI 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_CAPI UBool U_EXPORT2
|
|
unorm2_hasBoundaryBefore(const UNormalizer2 *norm2, UChar32 c) {
|
|
return ((const Normalizer2 *)norm2)->hasBoundaryBefore(c);
|
|
}
|
|
|
|
U_CAPI UBool U_EXPORT2
|
|
unorm2_hasBoundaryAfter(const UNormalizer2 *norm2, UChar32 c) {
|
|
return ((const Normalizer2 *)norm2)->hasBoundaryAfter(c);
|
|
}
|
|
|
|
U_CAPI 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=Normalizer2::getNFDInstance(errorCode);
|
|
if(U_SUCCESS(errorCode)) {
|
|
return nfd->getCombiningClass(c);
|
|
} else {
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
U_CFUNC uint16_t
|
|
unorm_getFCD16(UChar32 c) {
|
|
UErrorCode errorCode=U_ZERO_ERROR;
|
|
const Normalizer2Impl *impl=Normalizer2Factory::getNFCImpl(errorCode);
|
|
if(U_SUCCESS(errorCode)) {
|
|
return impl->getFCD16(c);
|
|
} else {
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
#endif // !UCONFIG_NO_NORMALIZATION
|