1674 lines
70 KiB
C++
1674 lines
70 KiB
C++
/*
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*******************************************************************************
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* Copyright (C) 2013-2014, International Business Machines
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* Corporation and others. All Rights Reserved.
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*******************************************************************************
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* collationbuilder.cpp
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*
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* (replaced the former ucol_bld.cpp)
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*
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* created on: 2013may06
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* created by: Markus W. Scherer
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*/
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#ifdef DEBUG_COLLATION_BUILDER
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#include <stdio.h>
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#endif
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#include "unicode/utypes.h"
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#if !UCONFIG_NO_COLLATION
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#include "unicode/caniter.h"
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#include "unicode/normalizer2.h"
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#include "unicode/tblcoll.h"
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#include "unicode/parseerr.h"
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#include "unicode/uchar.h"
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#include "unicode/ucol.h"
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#include "unicode/unistr.h"
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#include "unicode/usetiter.h"
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#include "unicode/utf16.h"
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#include "unicode/uversion.h"
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#include "cmemory.h"
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#include "collation.h"
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#include "collationbuilder.h"
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#include "collationdata.h"
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#include "collationdatabuilder.h"
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#include "collationfastlatin.h"
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#include "collationroot.h"
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#include "collationrootelements.h"
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#include "collationruleparser.h"
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#include "collationsettings.h"
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#include "collationtailoring.h"
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#include "collationweights.h"
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#include "normalizer2impl.h"
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#include "uassert.h"
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#include "ucol_imp.h"
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#include "utf16collationiterator.h"
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U_NAMESPACE_BEGIN
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namespace {
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class BundleImporter : public CollationRuleParser::Importer {
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public:
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BundleImporter() {}
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virtual ~BundleImporter();
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virtual void getRules(
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const char *localeID, const char *collationType,
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UnicodeString &rules,
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const char *&errorReason, UErrorCode &errorCode);
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};
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BundleImporter::~BundleImporter() {}
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void
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BundleImporter::getRules(
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const char *localeID, const char *collationType,
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UnicodeString &rules,
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const char *& /*errorReason*/, UErrorCode &errorCode) {
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CollationLoader::loadRules(localeID, collationType, rules, errorCode);
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}
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} // namespace
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// RuleBasedCollator implementation ---------------------------------------- ***
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// These methods are here, rather than in rulebasedcollator.cpp,
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// for modularization:
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// Most code using Collator does not need to build a Collator from rules.
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// By moving these constructors and helper methods to a separate file,
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// most code will not have a static dependency on the builder code.
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RuleBasedCollator::RuleBasedCollator()
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: data(NULL),
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settings(NULL),
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tailoring(NULL),
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cacheEntry(NULL),
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validLocale(""),
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explicitlySetAttributes(0),
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actualLocaleIsSameAsValid(FALSE) {
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}
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RuleBasedCollator::RuleBasedCollator(const UnicodeString &rules, UErrorCode &errorCode)
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: data(NULL),
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settings(NULL),
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tailoring(NULL),
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cacheEntry(NULL),
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validLocale(""),
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explicitlySetAttributes(0),
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actualLocaleIsSameAsValid(FALSE) {
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internalBuildTailoring(rules, UCOL_DEFAULT, UCOL_DEFAULT, NULL, NULL, errorCode);
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}
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RuleBasedCollator::RuleBasedCollator(const UnicodeString &rules, ECollationStrength strength,
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UErrorCode &errorCode)
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: data(NULL),
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settings(NULL),
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tailoring(NULL),
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cacheEntry(NULL),
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validLocale(""),
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explicitlySetAttributes(0),
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actualLocaleIsSameAsValid(FALSE) {
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internalBuildTailoring(rules, strength, UCOL_DEFAULT, NULL, NULL, errorCode);
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}
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RuleBasedCollator::RuleBasedCollator(const UnicodeString &rules,
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UColAttributeValue decompositionMode,
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UErrorCode &errorCode)
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: data(NULL),
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settings(NULL),
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tailoring(NULL),
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cacheEntry(NULL),
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validLocale(""),
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explicitlySetAttributes(0),
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actualLocaleIsSameAsValid(FALSE) {
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internalBuildTailoring(rules, UCOL_DEFAULT, decompositionMode, NULL, NULL, errorCode);
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}
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RuleBasedCollator::RuleBasedCollator(const UnicodeString &rules,
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ECollationStrength strength,
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UColAttributeValue decompositionMode,
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UErrorCode &errorCode)
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: data(NULL),
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settings(NULL),
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tailoring(NULL),
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cacheEntry(NULL),
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validLocale(""),
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explicitlySetAttributes(0),
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actualLocaleIsSameAsValid(FALSE) {
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internalBuildTailoring(rules, strength, decompositionMode, NULL, NULL, errorCode);
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}
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RuleBasedCollator::RuleBasedCollator(const UnicodeString &rules,
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UParseError &parseError, UnicodeString &reason,
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UErrorCode &errorCode)
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: data(NULL),
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settings(NULL),
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tailoring(NULL),
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cacheEntry(NULL),
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validLocale(""),
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explicitlySetAttributes(0),
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actualLocaleIsSameAsValid(FALSE) {
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internalBuildTailoring(rules, UCOL_DEFAULT, UCOL_DEFAULT, &parseError, &reason, errorCode);
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}
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void
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RuleBasedCollator::internalBuildTailoring(const UnicodeString &rules,
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int32_t strength,
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UColAttributeValue decompositionMode,
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UParseError *outParseError, UnicodeString *outReason,
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UErrorCode &errorCode) {
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const CollationTailoring *base = CollationRoot::getRoot(errorCode);
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if(U_FAILURE(errorCode)) { return; }
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if(outReason != NULL) { outReason->remove(); }
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CollationBuilder builder(base, errorCode);
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UVersionInfo noVersion = { 0, 0, 0, 0 };
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BundleImporter importer;
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LocalPointer<CollationTailoring> t(builder.parseAndBuild(rules, noVersion,
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&importer,
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outParseError, errorCode));
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if(U_FAILURE(errorCode)) {
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const char *reason = builder.getErrorReason();
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if(reason != NULL && outReason != NULL) {
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*outReason = UnicodeString(reason, -1, US_INV);
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}
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return;
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}
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t->actualLocale.setToBogus();
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adoptTailoring(t.orphan(), errorCode);
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// Set attributes after building the collator,
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// to keep the default settings consistent with the rule string.
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if(strength != UCOL_DEFAULT) {
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setAttribute(UCOL_STRENGTH, (UColAttributeValue)strength, errorCode);
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}
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if(decompositionMode != UCOL_DEFAULT) {
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setAttribute(UCOL_NORMALIZATION_MODE, decompositionMode, errorCode);
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}
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}
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// CollationBuilder implementation ----------------------------------------- ***
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CollationBuilder::CollationBuilder(const CollationTailoring *b, UErrorCode &errorCode)
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: nfd(*Normalizer2::getNFDInstance(errorCode)),
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fcd(*Normalizer2Factory::getFCDInstance(errorCode)),
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nfcImpl(*Normalizer2Factory::getNFCImpl(errorCode)),
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base(b),
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baseData(b->data),
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rootElements(b->data->rootElements, b->data->rootElementsLength),
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variableTop(0),
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dataBuilder(new CollationDataBuilder(errorCode)), fastLatinEnabled(TRUE),
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errorReason(NULL),
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cesLength(0),
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rootPrimaryIndexes(errorCode), nodes(errorCode) {
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nfcImpl.ensureCanonIterData(errorCode);
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if(U_FAILURE(errorCode)) {
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errorReason = "CollationBuilder fields initialization failed";
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return;
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}
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if(dataBuilder == NULL) {
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errorCode = U_MEMORY_ALLOCATION_ERROR;
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return;
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}
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dataBuilder->initForTailoring(baseData, errorCode);
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if(U_FAILURE(errorCode)) {
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errorReason = "CollationBuilder initialization failed";
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}
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}
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CollationBuilder::~CollationBuilder() {
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delete dataBuilder;
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}
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CollationTailoring *
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CollationBuilder::parseAndBuild(const UnicodeString &ruleString,
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const UVersionInfo rulesVersion,
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CollationRuleParser::Importer *importer,
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UParseError *outParseError,
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UErrorCode &errorCode) {
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if(U_FAILURE(errorCode)) { return NULL; }
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if(baseData->rootElements == NULL) {
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errorCode = U_MISSING_RESOURCE_ERROR;
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errorReason = "missing root elements data, tailoring not supported";
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return NULL;
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}
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LocalPointer<CollationTailoring> tailoring(new CollationTailoring(base->settings));
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if(tailoring.isNull() || tailoring->isBogus()) {
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errorCode = U_MEMORY_ALLOCATION_ERROR;
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return NULL;
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}
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CollationRuleParser parser(baseData, errorCode);
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if(U_FAILURE(errorCode)) { return NULL; }
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// Note: This always bases &[last variable] and &[first regular]
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// on the root collator's maxVariable/variableTop.
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// If we wanted this to change after [maxVariable x], then we would keep
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// the tailoring.settings pointer here and read its variableTop when we need it.
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// See http://unicode.org/cldr/trac/ticket/6070
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variableTop = base->settings->variableTop;
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parser.setSink(this);
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parser.setImporter(importer);
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CollationSettings &ownedSettings = *SharedObject::copyOnWrite(tailoring->settings);
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parser.parse(ruleString, ownedSettings, outParseError, errorCode);
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errorReason = parser.getErrorReason();
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if(U_FAILURE(errorCode)) { return NULL; }
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if(dataBuilder->hasMappings()) {
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makeTailoredCEs(errorCode);
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closeOverComposites(errorCode);
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finalizeCEs(errorCode);
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// Copy all of ASCII, and Latin-1 letters, into each tailoring.
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optimizeSet.add(0, 0x7f);
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optimizeSet.add(0xc0, 0xff);
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// Hangul is decomposed on the fly during collation,
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// and the tailoring data is always built with HANGUL_TAG specials.
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optimizeSet.remove(Hangul::HANGUL_BASE, Hangul::HANGUL_END);
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dataBuilder->optimize(optimizeSet, errorCode);
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tailoring->ensureOwnedData(errorCode);
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if(U_FAILURE(errorCode)) { return NULL; }
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if(fastLatinEnabled) { dataBuilder->enableFastLatin(); }
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dataBuilder->build(*tailoring->ownedData, errorCode);
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tailoring->builder = dataBuilder;
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dataBuilder = NULL;
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} else {
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tailoring->data = baseData;
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}
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if(U_FAILURE(errorCode)) { return NULL; }
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ownedSettings.fastLatinOptions = CollationFastLatin::getOptions(
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tailoring->data, ownedSettings,
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ownedSettings.fastLatinPrimaries, UPRV_LENGTHOF(ownedSettings.fastLatinPrimaries));
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tailoring->rules = ruleString;
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tailoring->rules.getTerminatedBuffer(); // ensure NUL-termination
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tailoring->setVersion(base->version, rulesVersion);
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return tailoring.orphan();
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}
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void
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CollationBuilder::addReset(int32_t strength, const UnicodeString &str,
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const char *&parserErrorReason, UErrorCode &errorCode) {
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if(U_FAILURE(errorCode)) { return; }
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U_ASSERT(!str.isEmpty());
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if(str.charAt(0) == CollationRuleParser::POS_LEAD) {
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ces[0] = getSpecialResetPosition(str, parserErrorReason, errorCode);
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cesLength = 1;
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if(U_FAILURE(errorCode)) { return; }
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U_ASSERT((ces[0] & Collation::CASE_AND_QUATERNARY_MASK) == 0);
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} else {
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// normal reset to a character or string
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UnicodeString nfdString = nfd.normalize(str, errorCode);
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if(U_FAILURE(errorCode)) {
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parserErrorReason = "normalizing the reset position";
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return;
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}
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cesLength = dataBuilder->getCEs(nfdString, ces, 0);
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if(cesLength > Collation::MAX_EXPANSION_LENGTH) {
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errorCode = U_ILLEGAL_ARGUMENT_ERROR;
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parserErrorReason = "reset position maps to too many collation elements (more than 31)";
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return;
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}
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}
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if(strength == UCOL_IDENTICAL) { return; } // simple reset-at-position
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// &[before strength]position
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U_ASSERT(UCOL_PRIMARY <= strength && strength <= UCOL_TERTIARY);
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int32_t index = findOrInsertNodeForCEs(strength, parserErrorReason, errorCode);
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if(U_FAILURE(errorCode)) { return; }
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int64_t node = nodes.elementAti(index);
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// If the index is for a "weaker" tailored node,
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// then skip backwards over this and further "weaker" nodes.
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while(strengthFromNode(node) > strength) {
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index = previousIndexFromNode(node);
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node = nodes.elementAti(index);
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}
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// Find or insert a node whose index we will put into a temporary CE.
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if(strengthFromNode(node) == strength && isTailoredNode(node)) {
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// Reset to just before this same-strength tailored node.
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index = previousIndexFromNode(node);
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} else if(strength == UCOL_PRIMARY) {
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// root primary node (has no previous index)
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uint32_t p = weight32FromNode(node);
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if(p == 0) {
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errorCode = U_UNSUPPORTED_ERROR;
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parserErrorReason = "reset primary-before ignorable not possible";
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return;
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}
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if(p <= rootElements.getFirstPrimary()) {
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// There is no primary gap between ignorables and the space-first-primary.
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errorCode = U_UNSUPPORTED_ERROR;
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parserErrorReason = "reset primary-before first non-ignorable not supported";
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return;
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}
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if(p == Collation::FIRST_TRAILING_PRIMARY) {
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// We do not support tailoring to an unassigned-implicit CE.
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errorCode = U_UNSUPPORTED_ERROR;
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parserErrorReason = "reset primary-before [first trailing] not supported";
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return;
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}
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p = rootElements.getPrimaryBefore(p, baseData->isCompressiblePrimary(p));
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index = findOrInsertNodeForPrimary(p, errorCode);
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// Go to the last node in this list:
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// Tailor after the last node between adjacent root nodes.
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for(;;) {
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node = nodes.elementAti(index);
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int32_t nextIndex = nextIndexFromNode(node);
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if(nextIndex == 0) { break; }
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index = nextIndex;
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}
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} else {
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// &[before 2] or &[before 3]
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index = findCommonNode(index, UCOL_SECONDARY);
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if(strength >= UCOL_TERTIARY) {
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index = findCommonNode(index, UCOL_TERTIARY);
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}
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node = nodes.elementAti(index);
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if(strengthFromNode(node) == strength) {
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// Found a same-strength node with an explicit weight.
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uint32_t weight16 = weight16FromNode(node);
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if(weight16 == 0) {
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errorCode = U_UNSUPPORTED_ERROR;
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if(strength == UCOL_SECONDARY) {
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parserErrorReason = "reset secondary-before secondary ignorable not possible";
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} else {
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parserErrorReason = "reset tertiary-before completely ignorable not possible";
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}
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return;
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}
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U_ASSERT(weight16 >= Collation::COMMON_WEIGHT16);
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int32_t previousIndex = previousIndexFromNode(node);
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if(weight16 == Collation::COMMON_WEIGHT16) {
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// Reset to just before this same-strength common-weight node.
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index = previousIndex;
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} else {
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// A non-common weight is only possible from a root CE.
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// Find the higher-level weights, which must all be explicit,
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// and then find the preceding weight for this level.
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uint32_t previousWeight16 = 0;
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int32_t previousWeightIndex = -1;
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int32_t i = index;
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if(strength == UCOL_SECONDARY) {
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uint32_t p;
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do {
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i = previousIndexFromNode(node);
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node = nodes.elementAti(i);
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if(strengthFromNode(node) == UCOL_SECONDARY && !isTailoredNode(node) &&
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previousWeightIndex < 0) {
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previousWeightIndex = i;
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previousWeight16 = weight16FromNode(node);
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}
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} while(strengthFromNode(node) > UCOL_PRIMARY);
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U_ASSERT(!isTailoredNode(node));
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p = weight32FromNode(node);
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weight16 = rootElements.getSecondaryBefore(p, weight16);
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} else {
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uint32_t p, s;
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do {
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i = previousIndexFromNode(node);
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node = nodes.elementAti(i);
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if(strengthFromNode(node) == UCOL_TERTIARY && !isTailoredNode(node) &&
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previousWeightIndex < 0) {
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previousWeightIndex = i;
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previousWeight16 = weight16FromNode(node);
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}
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} while(strengthFromNode(node) > UCOL_SECONDARY);
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U_ASSERT(!isTailoredNode(node));
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if(strengthFromNode(node) == UCOL_SECONDARY) {
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s = weight16FromNode(node);
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do {
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i = previousIndexFromNode(node);
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node = nodes.elementAti(i);
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} while(strengthFromNode(node) > UCOL_PRIMARY);
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U_ASSERT(!isTailoredNode(node));
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} else {
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U_ASSERT(!nodeHasBefore2(node));
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s = Collation::COMMON_WEIGHT16;
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}
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p = weight32FromNode(node);
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weight16 = rootElements.getTertiaryBefore(p, s, weight16);
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U_ASSERT((weight16 & ~Collation::ONLY_TERTIARY_MASK) == 0);
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}
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// Find or insert the new explicit weight before the current one.
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if(previousWeightIndex >= 0 && weight16 == previousWeight16) {
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// Tailor after the last node between adjacent root nodes.
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index = previousIndex;
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} else {
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node = nodeFromWeight16(weight16) | nodeFromStrength(strength);
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index = insertNodeBetween(previousIndex, index, node, errorCode);
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}
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}
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} else {
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// Found a stronger node with implied strength-common weight.
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int64_t hasBefore3 = 0;
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if(strength == UCOL_SECONDARY) {
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U_ASSERT(!nodeHasBefore2(node));
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// Move the HAS_BEFORE3 flag from the parent node
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// to the new secondary common node.
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hasBefore3 = node & HAS_BEFORE3;
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node = (node & ~(int64_t)HAS_BEFORE3) | HAS_BEFORE2;
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} else {
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U_ASSERT(!nodeHasBefore3(node));
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node |= HAS_BEFORE3;
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}
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nodes.setElementAt(node, index);
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int32_t nextIndex = nextIndexFromNode(node);
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// Insert default nodes with weights 02 and 05, reset to the 02 node.
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node = nodeFromWeight16(BEFORE_WEIGHT16) | nodeFromStrength(strength);
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index = insertNodeBetween(index, nextIndex, node, errorCode);
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node = nodeFromWeight16(Collation::COMMON_WEIGHT16) | hasBefore3 |
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nodeFromStrength(strength);
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insertNodeBetween(index, nextIndex, node, errorCode);
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}
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// Strength of the temporary CE = strength of its reset position.
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// Code above raises an error if the before-strength is stronger.
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strength = ceStrength(ces[cesLength - 1]);
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}
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if(U_FAILURE(errorCode)) {
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parserErrorReason = "inserting reset position for &[before n]";
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return;
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}
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ces[cesLength - 1] = tempCEFromIndexAndStrength(index, strength);
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}
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int64_t
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CollationBuilder::getSpecialResetPosition(const UnicodeString &str,
|
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const char *&parserErrorReason, UErrorCode &errorCode) {
|
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U_ASSERT(str.length() == 2);
|
|
int64_t ce;
|
|
int32_t strength = UCOL_PRIMARY;
|
|
UBool isBoundary = FALSE;
|
|
UChar32 pos = str.charAt(1) - CollationRuleParser::POS_BASE;
|
|
U_ASSERT(0 <= pos && pos <= CollationRuleParser::LAST_TRAILING);
|
|
switch(pos) {
|
|
case CollationRuleParser::FIRST_TERTIARY_IGNORABLE:
|
|
// Quaternary CEs are not supported.
|
|
// Non-zero quaternary weights are possible only on tertiary or stronger CEs.
|
|
return 0;
|
|
case CollationRuleParser::LAST_TERTIARY_IGNORABLE:
|
|
return 0;
|
|
case CollationRuleParser::FIRST_SECONDARY_IGNORABLE: {
|
|
// Look for a tailored tertiary node after [0, 0, 0].
|
|
int32_t index = findOrInsertNodeForRootCE(0, UCOL_TERTIARY, errorCode);
|
|
if(U_FAILURE(errorCode)) { return 0; }
|
|
int64_t node = nodes.elementAti(index);
|
|
if((index = nextIndexFromNode(node)) != 0) {
|
|
node = nodes.elementAti(index);
|
|
U_ASSERT(strengthFromNode(node) <= UCOL_TERTIARY);
|
|
if(isTailoredNode(node) && strengthFromNode(node) == UCOL_TERTIARY) {
|
|
return tempCEFromIndexAndStrength(index, UCOL_TERTIARY);
|
|
}
|
|
}
|
|
return rootElements.getFirstTertiaryCE();
|
|
// No need to look for nodeHasAnyBefore() on a tertiary node.
|
|
}
|
|
case CollationRuleParser::LAST_SECONDARY_IGNORABLE:
|
|
ce = rootElements.getLastTertiaryCE();
|
|
strength = UCOL_TERTIARY;
|
|
break;
|
|
case CollationRuleParser::FIRST_PRIMARY_IGNORABLE: {
|
|
// Look for a tailored secondary node after [0, 0, *].
|
|
int32_t index = findOrInsertNodeForRootCE(0, UCOL_SECONDARY, errorCode);
|
|
if(U_FAILURE(errorCode)) { return 0; }
|
|
int64_t node = nodes.elementAti(index);
|
|
while((index = nextIndexFromNode(node)) != 0) {
|
|
node = nodes.elementAti(index);
|
|
strength = strengthFromNode(node);
|
|
if(strength < UCOL_SECONDARY) { break; }
|
|
if(strength == UCOL_SECONDARY) {
|
|
if(isTailoredNode(node)) {
|
|
if(nodeHasBefore3(node)) {
|
|
index = nextIndexFromNode(nodes.elementAti(nextIndexFromNode(node)));
|
|
U_ASSERT(isTailoredNode(nodes.elementAti(index)));
|
|
}
|
|
return tempCEFromIndexAndStrength(index, UCOL_SECONDARY);
|
|
} else {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
ce = rootElements.getFirstSecondaryCE();
|
|
strength = UCOL_SECONDARY;
|
|
break;
|
|
}
|
|
case CollationRuleParser::LAST_PRIMARY_IGNORABLE:
|
|
ce = rootElements.getLastSecondaryCE();
|
|
strength = UCOL_SECONDARY;
|
|
break;
|
|
case CollationRuleParser::FIRST_VARIABLE:
|
|
ce = rootElements.getFirstPrimaryCE();
|
|
isBoundary = TRUE; // FractionalUCA.txt: FDD1 00A0, SPACE first primary
|
|
break;
|
|
case CollationRuleParser::LAST_VARIABLE:
|
|
ce = rootElements.lastCEWithPrimaryBefore(variableTop + 1);
|
|
break;
|
|
case CollationRuleParser::FIRST_REGULAR:
|
|
ce = rootElements.firstCEWithPrimaryAtLeast(variableTop + 1);
|
|
isBoundary = TRUE; // FractionalUCA.txt: FDD1 263A, SYMBOL first primary
|
|
break;
|
|
case CollationRuleParser::LAST_REGULAR:
|
|
// Use the Hani-first-primary rather than the actual last "regular" CE before it,
|
|
// for backward compatibility with behavior before the introduction of
|
|
// script-first-primary CEs in the root collator.
|
|
ce = rootElements.firstCEWithPrimaryAtLeast(
|
|
baseData->getFirstPrimaryForGroup(USCRIPT_HAN));
|
|
break;
|
|
case CollationRuleParser::FIRST_IMPLICIT:
|
|
ce = baseData->getSingleCE(0x4e00, errorCode);
|
|
break;
|
|
case CollationRuleParser::LAST_IMPLICIT:
|
|
// We do not support tailoring to an unassigned-implicit CE.
|
|
errorCode = U_UNSUPPORTED_ERROR;
|
|
parserErrorReason = "reset to [last implicit] not supported";
|
|
return 0;
|
|
case CollationRuleParser::FIRST_TRAILING:
|
|
ce = Collation::makeCE(Collation::FIRST_TRAILING_PRIMARY);
|
|
isBoundary = TRUE; // trailing first primary (there is no mapping for it)
|
|
break;
|
|
case CollationRuleParser::LAST_TRAILING:
|
|
errorCode = U_ILLEGAL_ARGUMENT_ERROR;
|
|
parserErrorReason = "LDML forbids tailoring to U+FFFF";
|
|
return 0;
|
|
default:
|
|
U_ASSERT(FALSE);
|
|
return 0;
|
|
}
|
|
|
|
int32_t index = findOrInsertNodeForRootCE(ce, strength, errorCode);
|
|
if(U_FAILURE(errorCode)) { return 0; }
|
|
int64_t node = nodes.elementAti(index);
|
|
if((pos & 1) == 0) {
|
|
// even pos = [first xyz]
|
|
if(!nodeHasAnyBefore(node) && isBoundary) {
|
|
// A <group> first primary boundary is artificially added to FractionalUCA.txt.
|
|
// It is reachable via its special contraction, but is not normally used.
|
|
// Find the first character tailored after the boundary CE,
|
|
// or the first real root CE after it.
|
|
if((index = nextIndexFromNode(node)) != 0) {
|
|
// If there is a following node, then it must be tailored
|
|
// because there are no root CEs with a boundary primary
|
|
// and non-common secondary/tertiary weights.
|
|
node = nodes.elementAti(index);
|
|
U_ASSERT(isTailoredNode(node));
|
|
ce = tempCEFromIndexAndStrength(index, strength);
|
|
} else {
|
|
U_ASSERT(strength == UCOL_PRIMARY);
|
|
uint32_t p = (uint32_t)(ce >> 32);
|
|
int32_t pIndex = rootElements.findPrimary(p);
|
|
UBool isCompressible = baseData->isCompressiblePrimary(p);
|
|
p = rootElements.getPrimaryAfter(p, pIndex, isCompressible);
|
|
ce = Collation::makeCE(p);
|
|
index = findOrInsertNodeForRootCE(ce, UCOL_PRIMARY, errorCode);
|
|
if(U_FAILURE(errorCode)) { return 0; }
|
|
node = nodes.elementAti(index);
|
|
}
|
|
}
|
|
if(nodeHasAnyBefore(node)) {
|
|
// Get the first node that was tailored before this one at a weaker strength.
|
|
if(nodeHasBefore2(node)) {
|
|
index = nextIndexFromNode(nodes.elementAti(nextIndexFromNode(node)));
|
|
node = nodes.elementAti(index);
|
|
}
|
|
if(nodeHasBefore3(node)) {
|
|
index = nextIndexFromNode(nodes.elementAti(nextIndexFromNode(node)));
|
|
}
|
|
U_ASSERT(isTailoredNode(nodes.elementAti(index)));
|
|
ce = tempCEFromIndexAndStrength(index, strength);
|
|
}
|
|
} else {
|
|
// odd pos = [last xyz]
|
|
// Find the last node that was tailored after the [last xyz]
|
|
// at a strength no greater than the position's strength.
|
|
for(;;) {
|
|
int32_t nextIndex = nextIndexFromNode(node);
|
|
if(nextIndex == 0) { break; }
|
|
int64_t nextNode = nodes.elementAti(nextIndex);
|
|
if(strengthFromNode(nextNode) < strength) { break; }
|
|
index = nextIndex;
|
|
node = nextNode;
|
|
}
|
|
// Do not make a temporary CE for a root node.
|
|
// This last node might be the node for the root CE itself,
|
|
// or a node with a common secondary or tertiary weight.
|
|
if(isTailoredNode(node)) {
|
|
ce = tempCEFromIndexAndStrength(index, strength);
|
|
}
|
|
}
|
|
return ce;
|
|
}
|
|
|
|
void
|
|
CollationBuilder::addRelation(int32_t strength, const UnicodeString &prefix,
|
|
const UnicodeString &str, const UnicodeString &extension,
|
|
const char *&parserErrorReason, UErrorCode &errorCode) {
|
|
if(U_FAILURE(errorCode)) { return; }
|
|
UnicodeString nfdPrefix;
|
|
if(!prefix.isEmpty()) {
|
|
nfd.normalize(prefix, nfdPrefix, errorCode);
|
|
if(U_FAILURE(errorCode)) {
|
|
parserErrorReason = "normalizing the relation prefix";
|
|
return;
|
|
}
|
|
}
|
|
UnicodeString nfdString = nfd.normalize(str, errorCode);
|
|
if(U_FAILURE(errorCode)) {
|
|
parserErrorReason = "normalizing the relation string";
|
|
return;
|
|
}
|
|
|
|
// The runtime code decomposes Hangul syllables on the fly,
|
|
// with recursive processing but without making the Jamo pieces visible for matching.
|
|
// It does not work with certain types of contextual mappings.
|
|
int32_t nfdLength = nfdString.length();
|
|
if(nfdLength >= 2) {
|
|
UChar c = nfdString.charAt(0);
|
|
if(Hangul::isJamoL(c) || Hangul::isJamoV(c)) {
|
|
// While handling a Hangul syllable, contractions starting with Jamo L or V
|
|
// would not see the following Jamo of that syllable.
|
|
errorCode = U_UNSUPPORTED_ERROR;
|
|
parserErrorReason = "contractions starting with conjoining Jamo L or V not supported";
|
|
return;
|
|
}
|
|
c = nfdString.charAt(nfdLength - 1);
|
|
if(Hangul::isJamoL(c) ||
|
|
(Hangul::isJamoV(c) && Hangul::isJamoL(nfdString.charAt(nfdLength - 2)))) {
|
|
// A contraction ending with Jamo L or L+V would require
|
|
// generating Hangul syllables in addTailComposites() (588 for a Jamo L),
|
|
// or decomposing a following Hangul syllable on the fly, during contraction matching.
|
|
errorCode = U_UNSUPPORTED_ERROR;
|
|
parserErrorReason = "contractions ending with conjoining Jamo L or L+V not supported";
|
|
return;
|
|
}
|
|
// A Hangul syllable completely inside a contraction is ok.
|
|
}
|
|
// Note: If there is a prefix, then the parser checked that
|
|
// both the prefix and the string beging with NFC boundaries (not Jamo V or T).
|
|
// Therefore: prefix.isEmpty() || !isJamoVOrT(nfdString.charAt(0))
|
|
// (While handling a Hangul syllable, prefixes on Jamo V or T
|
|
// would not see the previous Jamo of that syllable.)
|
|
|
|
if(strength != UCOL_IDENTICAL) {
|
|
// Find the node index after which we insert the new tailored node.
|
|
int32_t index = findOrInsertNodeForCEs(strength, parserErrorReason, errorCode);
|
|
U_ASSERT(cesLength > 0);
|
|
int64_t ce = ces[cesLength - 1];
|
|
if(strength == UCOL_PRIMARY && !isTempCE(ce) && (uint32_t)(ce >> 32) == 0) {
|
|
// There is no primary gap between ignorables and the space-first-primary.
|
|
errorCode = U_UNSUPPORTED_ERROR;
|
|
parserErrorReason = "tailoring primary after ignorables not supported";
|
|
return;
|
|
}
|
|
if(strength == UCOL_QUATERNARY && ce == 0) {
|
|
// The CE data structure does not support non-zero quaternary weights
|
|
// on tertiary ignorables.
|
|
errorCode = U_UNSUPPORTED_ERROR;
|
|
parserErrorReason = "tailoring quaternary after tertiary ignorables not supported";
|
|
return;
|
|
}
|
|
// Insert the new tailored node.
|
|
index = insertTailoredNodeAfter(index, strength, errorCode);
|
|
if(U_FAILURE(errorCode)) {
|
|
parserErrorReason = "modifying collation elements";
|
|
return;
|
|
}
|
|
// Strength of the temporary CE:
|
|
// The new relation may yield a stronger CE but not a weaker one.
|
|
int32_t tempStrength = ceStrength(ce);
|
|
if(strength < tempStrength) { tempStrength = strength; }
|
|
ces[cesLength - 1] = tempCEFromIndexAndStrength(index, tempStrength);
|
|
}
|
|
|
|
setCaseBits(nfdString, parserErrorReason, errorCode);
|
|
if(U_FAILURE(errorCode)) { return; }
|
|
|
|
int32_t cesLengthBeforeExtension = cesLength;
|
|
if(!extension.isEmpty()) {
|
|
UnicodeString nfdExtension = nfd.normalize(extension, errorCode);
|
|
if(U_FAILURE(errorCode)) {
|
|
parserErrorReason = "normalizing the relation extension";
|
|
return;
|
|
}
|
|
cesLength = dataBuilder->getCEs(nfdExtension, ces, cesLength);
|
|
if(cesLength > Collation::MAX_EXPANSION_LENGTH) {
|
|
errorCode = U_ILLEGAL_ARGUMENT_ERROR;
|
|
parserErrorReason =
|
|
"extension string adds too many collation elements (more than 31 total)";
|
|
return;
|
|
}
|
|
}
|
|
uint32_t ce32 = Collation::UNASSIGNED_CE32;
|
|
if((prefix != nfdPrefix || str != nfdString) &&
|
|
!ignorePrefix(prefix, errorCode) && !ignoreString(str, errorCode)) {
|
|
// Map from the original input to the CEs.
|
|
// We do this in case the canonical closure is incomplete,
|
|
// so that it is possible to explicitly provide the missing mappings.
|
|
ce32 = addIfDifferent(prefix, str, ces, cesLength, ce32, errorCode);
|
|
}
|
|
addWithClosure(nfdPrefix, nfdString, ces, cesLength, ce32, errorCode);
|
|
if(U_FAILURE(errorCode)) {
|
|
parserErrorReason = "writing collation elements";
|
|
return;
|
|
}
|
|
cesLength = cesLengthBeforeExtension;
|
|
}
|
|
|
|
int32_t
|
|
CollationBuilder::findOrInsertNodeForCEs(int32_t strength, const char *&parserErrorReason,
|
|
UErrorCode &errorCode) {
|
|
if(U_FAILURE(errorCode)) { return 0; }
|
|
U_ASSERT(UCOL_PRIMARY <= strength && strength <= UCOL_QUATERNARY);
|
|
|
|
// Find the last CE that is at least as "strong" as the requested difference.
|
|
// Note: Stronger is smaller (UCOL_PRIMARY=0).
|
|
int64_t ce;
|
|
for(;; --cesLength) {
|
|
if(cesLength == 0) {
|
|
ce = ces[0] = 0;
|
|
cesLength = 1;
|
|
break;
|
|
} else {
|
|
ce = ces[cesLength - 1];
|
|
}
|
|
if(ceStrength(ce) <= strength) { break; }
|
|
}
|
|
|
|
if(isTempCE(ce)) {
|
|
// No need to findCommonNode() here for lower levels
|
|
// because insertTailoredNodeAfter() will do that anyway.
|
|
return indexFromTempCE(ce);
|
|
}
|
|
|
|
// root CE
|
|
if((uint8_t)(ce >> 56) == Collation::UNASSIGNED_IMPLICIT_BYTE) {
|
|
errorCode = U_UNSUPPORTED_ERROR;
|
|
parserErrorReason = "tailoring relative to an unassigned code point not supported";
|
|
return 0;
|
|
}
|
|
return findOrInsertNodeForRootCE(ce, strength, errorCode);
|
|
}
|
|
|
|
int32_t
|
|
CollationBuilder::findOrInsertNodeForRootCE(int64_t ce, int32_t strength, UErrorCode &errorCode) {
|
|
if(U_FAILURE(errorCode)) { return 0; }
|
|
U_ASSERT((uint8_t)(ce >> 56) != Collation::UNASSIGNED_IMPLICIT_BYTE);
|
|
|
|
// Find or insert the node for each of the root CE's weights,
|
|
// down to the requested level/strength.
|
|
// Root CEs must have common=zero quaternary weights (for which we never insert any nodes).
|
|
U_ASSERT((ce & 0xc0) == 0);
|
|
int32_t index = findOrInsertNodeForPrimary((uint32_t)(ce >> 32) , errorCode);
|
|
if(strength >= UCOL_SECONDARY) {
|
|
uint32_t lower32 = (uint32_t)ce;
|
|
index = findOrInsertWeakNode(index, lower32 >> 16, UCOL_SECONDARY, errorCode);
|
|
if(strength >= UCOL_TERTIARY) {
|
|
index = findOrInsertWeakNode(index, lower32 & Collation::ONLY_TERTIARY_MASK,
|
|
UCOL_TERTIARY, errorCode);
|
|
}
|
|
}
|
|
return index;
|
|
}
|
|
|
|
namespace {
|
|
|
|
/**
|
|
* Like Java Collections.binarySearch(List, key, Comparator).
|
|
*
|
|
* @return the index>=0 where the item was found,
|
|
* or the index<0 for inserting the string at ~index in sorted order
|
|
* (index into rootPrimaryIndexes)
|
|
*/
|
|
int32_t
|
|
binarySearchForRootPrimaryNode(const int32_t *rootPrimaryIndexes, int32_t length,
|
|
const int64_t *nodes, uint32_t p) {
|
|
if(length == 0) { return ~0; }
|
|
int32_t start = 0;
|
|
int32_t limit = length;
|
|
for (;;) {
|
|
int32_t i = (start + limit) / 2;
|
|
int64_t node = nodes[rootPrimaryIndexes[i]];
|
|
uint32_t nodePrimary = (uint32_t)(node >> 32); // weight32FromNode(node)
|
|
if (p == nodePrimary) {
|
|
return i;
|
|
} else if (p < nodePrimary) {
|
|
if (i == start) {
|
|
return ~start; // insert s before i
|
|
}
|
|
limit = i;
|
|
} else {
|
|
if (i == start) {
|
|
return ~(start + 1); // insert s after i
|
|
}
|
|
start = i;
|
|
}
|
|
}
|
|
}
|
|
|
|
} // namespace
|
|
|
|
int32_t
|
|
CollationBuilder::findOrInsertNodeForPrimary(uint32_t p, UErrorCode &errorCode) {
|
|
if(U_FAILURE(errorCode)) { return 0; }
|
|
|
|
int32_t rootIndex = binarySearchForRootPrimaryNode(
|
|
rootPrimaryIndexes.getBuffer(), rootPrimaryIndexes.size(), nodes.getBuffer(), p);
|
|
if(rootIndex >= 0) {
|
|
return rootPrimaryIndexes.elementAti(rootIndex);
|
|
} else {
|
|
// Start a new list of nodes with this primary.
|
|
int32_t index = nodes.size();
|
|
nodes.addElement(nodeFromWeight32(p), errorCode);
|
|
rootPrimaryIndexes.insertElementAt(index, ~rootIndex, errorCode);
|
|
return index;
|
|
}
|
|
}
|
|
|
|
int32_t
|
|
CollationBuilder::findOrInsertWeakNode(int32_t index, uint32_t weight16, int32_t level, UErrorCode &errorCode) {
|
|
if(U_FAILURE(errorCode)) { return 0; }
|
|
U_ASSERT(0 <= index && index < nodes.size());
|
|
|
|
U_ASSERT(weight16 == 0 || weight16 >= Collation::COMMON_WEIGHT16);
|
|
// Only reset-before inserts common weights.
|
|
if(weight16 == Collation::COMMON_WEIGHT16) {
|
|
return findCommonNode(index, level);
|
|
}
|
|
// Find the root CE's weight for this level.
|
|
// Postpone insertion if not found:
|
|
// Insert the new root node before the next stronger node,
|
|
// or before the next root node with the same strength and a larger weight.
|
|
int64_t node = nodes.elementAti(index);
|
|
int32_t nextIndex;
|
|
while((nextIndex = nextIndexFromNode(node)) != 0) {
|
|
node = nodes.elementAti(nextIndex);
|
|
int32_t nextStrength = strengthFromNode(node);
|
|
if(nextStrength <= level) {
|
|
// Insert before a stronger node.
|
|
if(nextStrength < level) { break; }
|
|
// nextStrength == level
|
|
if(!isTailoredNode(node)) {
|
|
uint32_t nextWeight16 = weight16FromNode(node);
|
|
if(nextWeight16 == weight16) {
|
|
// Found the node for the root CE up to this level.
|
|
return nextIndex;
|
|
}
|
|
// Insert before a node with a larger same-strength weight.
|
|
if(nextWeight16 > weight16) { break; }
|
|
}
|
|
}
|
|
// Skip the next node.
|
|
index = nextIndex;
|
|
}
|
|
node = nodeFromWeight16(weight16) | nodeFromStrength(level);
|
|
return insertNodeBetween(index, nextIndex, node, errorCode);
|
|
}
|
|
|
|
int32_t
|
|
CollationBuilder::insertTailoredNodeAfter(int32_t index, int32_t strength, UErrorCode &errorCode) {
|
|
if(U_FAILURE(errorCode)) { return 0; }
|
|
U_ASSERT(0 <= index && index < nodes.size());
|
|
if(strength >= UCOL_SECONDARY) {
|
|
index = findCommonNode(index, UCOL_SECONDARY);
|
|
if(strength >= UCOL_TERTIARY) {
|
|
index = findCommonNode(index, UCOL_TERTIARY);
|
|
}
|
|
}
|
|
// Postpone insertion:
|
|
// Insert the new node before the next one with a strength at least as strong.
|
|
int64_t node = nodes.elementAti(index);
|
|
int32_t nextIndex;
|
|
while((nextIndex = nextIndexFromNode(node)) != 0) {
|
|
node = nodes.elementAti(nextIndex);
|
|
if(strengthFromNode(node) <= strength) { break; }
|
|
// Skip the next node which has a weaker (larger) strength than the new one.
|
|
index = nextIndex;
|
|
}
|
|
node = IS_TAILORED | nodeFromStrength(strength);
|
|
return insertNodeBetween(index, nextIndex, node, errorCode);
|
|
}
|
|
|
|
int32_t
|
|
CollationBuilder::insertNodeBetween(int32_t index, int32_t nextIndex, int64_t node,
|
|
UErrorCode &errorCode) {
|
|
if(U_FAILURE(errorCode)) { return 0; }
|
|
U_ASSERT(previousIndexFromNode(node) == 0);
|
|
U_ASSERT(nextIndexFromNode(node) == 0);
|
|
U_ASSERT(nextIndexFromNode(nodes.elementAti(index)) == nextIndex);
|
|
// Append the new node and link it to the existing nodes.
|
|
int32_t newIndex = nodes.size();
|
|
node |= nodeFromPreviousIndex(index) | nodeFromNextIndex(nextIndex);
|
|
nodes.addElement(node, errorCode);
|
|
if(U_FAILURE(errorCode)) { return 0; }
|
|
// nodes[index].nextIndex = newIndex
|
|
node = nodes.elementAti(index);
|
|
nodes.setElementAt(changeNodeNextIndex(node, newIndex), index);
|
|
// nodes[nextIndex].previousIndex = newIndex
|
|
if(nextIndex != 0) {
|
|
node = nodes.elementAti(nextIndex);
|
|
nodes.setElementAt(changeNodePreviousIndex(node, newIndex), nextIndex);
|
|
}
|
|
return newIndex;
|
|
}
|
|
|
|
int32_t
|
|
CollationBuilder::findCommonNode(int32_t index, int32_t strength) const {
|
|
U_ASSERT(UCOL_SECONDARY <= strength && strength <= UCOL_TERTIARY);
|
|
int64_t node = nodes.elementAti(index);
|
|
if(strengthFromNode(node) >= strength) {
|
|
// The current node is no stronger.
|
|
return index;
|
|
}
|
|
if(strength == UCOL_SECONDARY ? !nodeHasBefore2(node) : !nodeHasBefore3(node)) {
|
|
// The current node implies the strength-common weight.
|
|
return index;
|
|
}
|
|
index = nextIndexFromNode(node);
|
|
node = nodes.elementAti(index);
|
|
U_ASSERT(!isTailoredNode(node) && strengthFromNode(node) == strength &&
|
|
weight16FromNode(node) == BEFORE_WEIGHT16);
|
|
// Skip to the explicit common node.
|
|
do {
|
|
index = nextIndexFromNode(node);
|
|
node = nodes.elementAti(index);
|
|
U_ASSERT(strengthFromNode(node) >= strength);
|
|
} while(isTailoredNode(node) || strengthFromNode(node) > strength);
|
|
U_ASSERT(weight16FromNode(node) == Collation::COMMON_WEIGHT16);
|
|
return index;
|
|
}
|
|
|
|
void
|
|
CollationBuilder::setCaseBits(const UnicodeString &nfdString,
|
|
const char *&parserErrorReason, UErrorCode &errorCode) {
|
|
if(U_FAILURE(errorCode)) { return; }
|
|
int32_t numTailoredPrimaries = 0;
|
|
for(int32_t i = 0; i < cesLength; ++i) {
|
|
if(ceStrength(ces[i]) == UCOL_PRIMARY) { ++numTailoredPrimaries; }
|
|
}
|
|
// We should not be able to get too many case bits because
|
|
// cesLength<=31==MAX_EXPANSION_LENGTH.
|
|
// 31 pairs of case bits fit into an int64_t without setting its sign bit.
|
|
U_ASSERT(numTailoredPrimaries <= 31);
|
|
|
|
int64_t cases = 0;
|
|
if(numTailoredPrimaries > 0) {
|
|
const UChar *s = nfdString.getBuffer();
|
|
UTF16CollationIterator baseCEs(baseData, FALSE, s, s, s + nfdString.length());
|
|
int32_t baseCEsLength = baseCEs.fetchCEs(errorCode) - 1;
|
|
if(U_FAILURE(errorCode)) {
|
|
parserErrorReason = "fetching root CEs for tailored string";
|
|
return;
|
|
}
|
|
U_ASSERT(baseCEsLength >= 0 && baseCEs.getCE(baseCEsLength) == Collation::NO_CE);
|
|
|
|
uint32_t lastCase = 0;
|
|
int32_t numBasePrimaries = 0;
|
|
for(int32_t i = 0; i < baseCEsLength; ++i) {
|
|
int64_t ce = baseCEs.getCE(i);
|
|
if((ce >> 32) != 0) {
|
|
++numBasePrimaries;
|
|
uint32_t c = ((uint32_t)ce >> 14) & 3;
|
|
U_ASSERT(c == 0 || c == 2); // lowercase or uppercase, no mixed case in any base CE
|
|
if(numBasePrimaries < numTailoredPrimaries) {
|
|
cases |= (int64_t)c << ((numBasePrimaries - 1) * 2);
|
|
} else if(numBasePrimaries == numTailoredPrimaries) {
|
|
lastCase = c;
|
|
} else if(c != lastCase) {
|
|
// There are more base primary CEs than tailored primaries.
|
|
// Set mixed case if the case bits of the remainder differ.
|
|
lastCase = 1;
|
|
// Nothing more can change.
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
if(numBasePrimaries >= numTailoredPrimaries) {
|
|
cases |= (int64_t)lastCase << ((numTailoredPrimaries - 1) * 2);
|
|
}
|
|
}
|
|
|
|
for(int32_t i = 0; i < cesLength; ++i) {
|
|
int64_t ce = ces[i] & INT64_C(0xffffffffffff3fff); // clear old case bits
|
|
int32_t strength = ceStrength(ce);
|
|
if(strength == UCOL_PRIMARY) {
|
|
ce |= (cases & 3) << 14;
|
|
cases >>= 2;
|
|
} else if(strength == UCOL_TERTIARY) {
|
|
// Tertiary CEs must have uppercase bits.
|
|
// See the LDML spec, and comments in class CollationCompare.
|
|
ce |= 0x8000;
|
|
}
|
|
// Tertiary ignorable CEs must have 0 case bits.
|
|
// We set 0 case bits for secondary CEs too
|
|
// since currently only U+0345 is cased and maps to a secondary CE,
|
|
// and it is lowercase. Other secondaries are uncased.
|
|
// See [[:Cased:]&[:uca1=:]] where uca1 queries the root primary weight.
|
|
ces[i] = ce;
|
|
}
|
|
}
|
|
|
|
void
|
|
CollationBuilder::suppressContractions(const UnicodeSet &set, const char *&parserErrorReason,
|
|
UErrorCode &errorCode) {
|
|
if(U_FAILURE(errorCode)) { return; }
|
|
dataBuilder->suppressContractions(set, errorCode);
|
|
if(U_FAILURE(errorCode)) {
|
|
parserErrorReason = "application of [suppressContractions [set]] failed";
|
|
}
|
|
}
|
|
|
|
void
|
|
CollationBuilder::optimize(const UnicodeSet &set, const char *& /* parserErrorReason */,
|
|
UErrorCode &errorCode) {
|
|
if(U_FAILURE(errorCode)) { return; }
|
|
optimizeSet.addAll(set);
|
|
}
|
|
|
|
uint32_t
|
|
CollationBuilder::addWithClosure(const UnicodeString &nfdPrefix, const UnicodeString &nfdString,
|
|
const int64_t newCEs[], int32_t newCEsLength, uint32_t ce32,
|
|
UErrorCode &errorCode) {
|
|
// Map from the NFD input to the CEs.
|
|
ce32 = addIfDifferent(nfdPrefix, nfdString, newCEs, newCEsLength, ce32, errorCode);
|
|
ce32 = addOnlyClosure(nfdPrefix, nfdString, newCEs, newCEsLength, ce32, errorCode);
|
|
addTailComposites(nfdPrefix, nfdString, errorCode);
|
|
return ce32;
|
|
}
|
|
|
|
uint32_t
|
|
CollationBuilder::addOnlyClosure(const UnicodeString &nfdPrefix, const UnicodeString &nfdString,
|
|
const int64_t newCEs[], int32_t newCEsLength, uint32_t ce32,
|
|
UErrorCode &errorCode) {
|
|
if(U_FAILURE(errorCode)) { return ce32; }
|
|
|
|
// Map from canonically equivalent input to the CEs. (But not from the all-NFD input.)
|
|
if(nfdPrefix.isEmpty()) {
|
|
CanonicalIterator stringIter(nfdString, errorCode);
|
|
if(U_FAILURE(errorCode)) { return ce32; }
|
|
UnicodeString prefix;
|
|
for(;;) {
|
|
UnicodeString str = stringIter.next();
|
|
if(str.isBogus()) { break; }
|
|
if(ignoreString(str, errorCode) || str == nfdString) { continue; }
|
|
ce32 = addIfDifferent(prefix, str, newCEs, newCEsLength, ce32, errorCode);
|
|
if(U_FAILURE(errorCode)) { return ce32; }
|
|
}
|
|
} else {
|
|
CanonicalIterator prefixIter(nfdPrefix, errorCode);
|
|
CanonicalIterator stringIter(nfdString, errorCode);
|
|
if(U_FAILURE(errorCode)) { return ce32; }
|
|
for(;;) {
|
|
UnicodeString prefix = prefixIter.next();
|
|
if(prefix.isBogus()) { break; }
|
|
if(ignorePrefix(prefix, errorCode)) { continue; }
|
|
UBool samePrefix = prefix == nfdPrefix;
|
|
for(;;) {
|
|
UnicodeString str = stringIter.next();
|
|
if(str.isBogus()) { break; }
|
|
if(ignoreString(str, errorCode) || (samePrefix && str == nfdString)) { continue; }
|
|
ce32 = addIfDifferent(prefix, str, newCEs, newCEsLength, ce32, errorCode);
|
|
if(U_FAILURE(errorCode)) { return ce32; }
|
|
}
|
|
stringIter.reset();
|
|
}
|
|
}
|
|
return ce32;
|
|
}
|
|
|
|
void
|
|
CollationBuilder::addTailComposites(const UnicodeString &nfdPrefix, const UnicodeString &nfdString,
|
|
UErrorCode &errorCode) {
|
|
if(U_FAILURE(errorCode)) { return; }
|
|
|
|
// Look for the last starter in the NFD string.
|
|
UChar32 lastStarter;
|
|
int32_t indexAfterLastStarter = nfdString.length();
|
|
for(;;) {
|
|
if(indexAfterLastStarter == 0) { return; } // no starter at all
|
|
lastStarter = nfdString.char32At(indexAfterLastStarter - 1);
|
|
if(nfd.getCombiningClass(lastStarter) == 0) { break; }
|
|
indexAfterLastStarter -= U16_LENGTH(lastStarter);
|
|
}
|
|
// No closure to Hangul syllables since we decompose them on the fly.
|
|
if(Hangul::isJamoL(lastStarter)) { return; }
|
|
|
|
// Are there any composites whose decomposition starts with the lastStarter?
|
|
// Note: Normalizer2Impl does not currently return start sets for NFC_QC=Maybe characters.
|
|
// We might find some more equivalent mappings here if it did.
|
|
UnicodeSet composites;
|
|
if(!nfcImpl.getCanonStartSet(lastStarter, composites)) { return; }
|
|
|
|
UnicodeString decomp;
|
|
UnicodeString newNFDString, newString;
|
|
int64_t newCEs[Collation::MAX_EXPANSION_LENGTH];
|
|
UnicodeSetIterator iter(composites);
|
|
while(iter.next()) {
|
|
U_ASSERT(!iter.isString());
|
|
UChar32 composite = iter.getCodepoint();
|
|
nfd.getDecomposition(composite, decomp);
|
|
if(!mergeCompositeIntoString(nfdString, indexAfterLastStarter, composite, decomp,
|
|
newNFDString, newString, errorCode)) {
|
|
continue;
|
|
}
|
|
int32_t newCEsLength = dataBuilder->getCEs(nfdPrefix, newNFDString, newCEs, 0);
|
|
if(newCEsLength > Collation::MAX_EXPANSION_LENGTH) {
|
|
// Ignore mappings that we cannot store.
|
|
continue;
|
|
}
|
|
// Note: It is possible that the newCEs do not make use of the mapping
|
|
// for which we are adding the tail composites, in which case we might be adding
|
|
// unnecessary mappings.
|
|
// For example, when we add tail composites for ae^ (^=combining circumflex),
|
|
// UCA discontiguous-contraction matching does not find any matches
|
|
// for ae_^ (_=any combining diacritic below) *unless* there is also
|
|
// a contraction mapping for ae.
|
|
// Thus, if there is no ae contraction, then the ae^ mapping is ignored
|
|
// while fetching the newCEs for ae_^.
|
|
// TODO: Try to detect this effectively.
|
|
// (Alternatively, print a warning when prefix contractions are missing.)
|
|
|
|
// We do not need an explicit mapping for the NFD strings.
|
|
// It is fine if the NFD input collates like this via a sequence of mappings.
|
|
// It also saves a little bit of space, and may reduce the set of characters with contractions.
|
|
uint32_t ce32 = addIfDifferent(nfdPrefix, newString,
|
|
newCEs, newCEsLength, Collation::UNASSIGNED_CE32, errorCode);
|
|
if(ce32 != Collation::UNASSIGNED_CE32) {
|
|
// was different, was added
|
|
addOnlyClosure(nfdPrefix, newNFDString, newCEs, newCEsLength, ce32, errorCode);
|
|
}
|
|
}
|
|
}
|
|
|
|
UBool
|
|
CollationBuilder::mergeCompositeIntoString(const UnicodeString &nfdString,
|
|
int32_t indexAfterLastStarter,
|
|
UChar32 composite, const UnicodeString &decomp,
|
|
UnicodeString &newNFDString, UnicodeString &newString,
|
|
UErrorCode &errorCode) const {
|
|
if(U_FAILURE(errorCode)) { return FALSE; }
|
|
U_ASSERT(nfdString.char32At(indexAfterLastStarter - 1) == decomp.char32At(0));
|
|
int32_t lastStarterLength = decomp.moveIndex32(0, 1);
|
|
if(lastStarterLength == decomp.length()) {
|
|
// Singleton decompositions should be found by addWithClosure()
|
|
// and the CanonicalIterator, so we can ignore them here.
|
|
return FALSE;
|
|
}
|
|
if(nfdString.compare(indexAfterLastStarter, 0x7fffffff,
|
|
decomp, lastStarterLength, 0x7fffffff) == 0) {
|
|
// same strings, nothing new to be found here
|
|
return FALSE;
|
|
}
|
|
|
|
// Make new FCD strings that combine a composite, or its decomposition,
|
|
// into the nfdString's last starter and the combining marks following it.
|
|
// Make an NFD version, and a version with the composite.
|
|
newNFDString.setTo(nfdString, 0, indexAfterLastStarter);
|
|
newString.setTo(nfdString, 0, indexAfterLastStarter - lastStarterLength).append(composite);
|
|
|
|
// The following is related to discontiguous contraction matching,
|
|
// but builds only FCD strings (or else returns FALSE).
|
|
int32_t sourceIndex = indexAfterLastStarter;
|
|
int32_t decompIndex = lastStarterLength;
|
|
// Small optimization: We keep the source character across loop iterations
|
|
// because we do not always consume it,
|
|
// and then need not fetch it again nor look up its combining class again.
|
|
UChar32 sourceChar = U_SENTINEL;
|
|
// The cc variables need to be declared before the loop so that at the end
|
|
// they are set to the last combining classes seen.
|
|
uint8_t sourceCC = 0;
|
|
uint8_t decompCC = 0;
|
|
for(;;) {
|
|
if(sourceChar < 0) {
|
|
if(sourceIndex >= nfdString.length()) { break; }
|
|
sourceChar = nfdString.char32At(sourceIndex);
|
|
sourceCC = nfd.getCombiningClass(sourceChar);
|
|
U_ASSERT(sourceCC != 0);
|
|
}
|
|
// We consume a decomposition character in each iteration.
|
|
if(decompIndex >= decomp.length()) { break; }
|
|
UChar32 decompChar = decomp.char32At(decompIndex);
|
|
decompCC = nfd.getCombiningClass(decompChar);
|
|
// Compare the two characters and their combining classes.
|
|
if(decompCC == 0) {
|
|
// Unable to merge because the source contains a non-zero combining mark
|
|
// but the composite's decomposition contains another starter.
|
|
// The strings would not be equivalent.
|
|
return FALSE;
|
|
} else if(sourceCC < decompCC) {
|
|
// Composite + sourceChar would not be FCD.
|
|
return FALSE;
|
|
} else if(decompCC < sourceCC) {
|
|
newNFDString.append(decompChar);
|
|
decompIndex += U16_LENGTH(decompChar);
|
|
} else if(decompChar != sourceChar) {
|
|
// Blocked because same combining class.
|
|
return FALSE;
|
|
} else { // match: decompChar == sourceChar
|
|
newNFDString.append(decompChar);
|
|
decompIndex += U16_LENGTH(decompChar);
|
|
sourceIndex += U16_LENGTH(decompChar);
|
|
sourceChar = U_SENTINEL;
|
|
}
|
|
}
|
|
// We are at the end of at least one of the two inputs.
|
|
if(sourceChar >= 0) { // more characters from nfdString but not from decomp
|
|
if(sourceCC < decompCC) {
|
|
// Appending the next source character to the composite would not be FCD.
|
|
return FALSE;
|
|
}
|
|
newNFDString.append(nfdString, sourceIndex, 0x7fffffff);
|
|
newString.append(nfdString, sourceIndex, 0x7fffffff);
|
|
} else if(decompIndex < decomp.length()) { // more characters from decomp, not from nfdString
|
|
newNFDString.append(decomp, decompIndex, 0x7fffffff);
|
|
}
|
|
U_ASSERT(nfd.isNormalized(newNFDString, errorCode));
|
|
U_ASSERT(fcd.isNormalized(newString, errorCode));
|
|
U_ASSERT(nfd.normalize(newString, errorCode) == newNFDString); // canonically equivalent
|
|
return TRUE;
|
|
}
|
|
|
|
UBool
|
|
CollationBuilder::ignorePrefix(const UnicodeString &s, UErrorCode &errorCode) const {
|
|
// Do not map non-FCD prefixes.
|
|
return !isFCD(s, errorCode);
|
|
}
|
|
|
|
UBool
|
|
CollationBuilder::ignoreString(const UnicodeString &s, UErrorCode &errorCode) const {
|
|
// Do not map non-FCD strings.
|
|
// Do not map strings that start with Hangul syllables: We decompose those on the fly.
|
|
return !isFCD(s, errorCode) || Hangul::isHangul(s.charAt(0));
|
|
}
|
|
|
|
UBool
|
|
CollationBuilder::isFCD(const UnicodeString &s, UErrorCode &errorCode) const {
|
|
return U_SUCCESS(errorCode) && fcd.isNormalized(s, errorCode);
|
|
}
|
|
|
|
void
|
|
CollationBuilder::closeOverComposites(UErrorCode &errorCode) {
|
|
UnicodeSet composites(UNICODE_STRING_SIMPLE("[:NFD_QC=N:]"), errorCode); // Java: static final
|
|
if(U_FAILURE(errorCode)) { return; }
|
|
// Hangul is decomposed on the fly during collation.
|
|
composites.remove(Hangul::HANGUL_BASE, Hangul::HANGUL_END);
|
|
UnicodeString prefix; // empty
|
|
UnicodeString nfdString;
|
|
UnicodeSetIterator iter(composites);
|
|
while(iter.next()) {
|
|
U_ASSERT(!iter.isString());
|
|
nfd.getDecomposition(iter.getCodepoint(), nfdString);
|
|
cesLength = dataBuilder->getCEs(nfdString, ces, 0);
|
|
if(cesLength > Collation::MAX_EXPANSION_LENGTH) {
|
|
// Too many CEs from the decomposition (unusual), ignore this composite.
|
|
// We could add a capacity parameter to getCEs() and reallocate if necessary.
|
|
// However, this can only really happen in contrived cases.
|
|
continue;
|
|
}
|
|
const UnicodeString &composite(iter.getString());
|
|
addIfDifferent(prefix, composite, ces, cesLength, Collation::UNASSIGNED_CE32, errorCode);
|
|
}
|
|
}
|
|
|
|
uint32_t
|
|
CollationBuilder::addIfDifferent(const UnicodeString &prefix, const UnicodeString &str,
|
|
const int64_t newCEs[], int32_t newCEsLength, uint32_t ce32,
|
|
UErrorCode &errorCode) {
|
|
if(U_FAILURE(errorCode)) { return ce32; }
|
|
int64_t oldCEs[Collation::MAX_EXPANSION_LENGTH];
|
|
int32_t oldCEsLength = dataBuilder->getCEs(prefix, str, oldCEs, 0);
|
|
if(!sameCEs(newCEs, newCEsLength, oldCEs, oldCEsLength)) {
|
|
if(ce32 == Collation::UNASSIGNED_CE32) {
|
|
ce32 = dataBuilder->encodeCEs(newCEs, newCEsLength, errorCode);
|
|
}
|
|
dataBuilder->addCE32(prefix, str, ce32, errorCode);
|
|
}
|
|
return ce32;
|
|
}
|
|
|
|
UBool
|
|
CollationBuilder::sameCEs(const int64_t ces1[], int32_t ces1Length,
|
|
const int64_t ces2[], int32_t ces2Length) {
|
|
if(ces1Length != ces2Length) {
|
|
return FALSE;
|
|
}
|
|
U_ASSERT(ces1Length <= Collation::MAX_EXPANSION_LENGTH);
|
|
for(int32_t i = 0; i < ces1Length; ++i) {
|
|
if(ces1[i] != ces2[i]) { return FALSE; }
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
#ifdef DEBUG_COLLATION_BUILDER
|
|
|
|
uint32_t
|
|
alignWeightRight(uint32_t w) {
|
|
if(w != 0) {
|
|
while((w & 0xff) == 0) { w >>= 8; }
|
|
}
|
|
return w;
|
|
}
|
|
|
|
#endif
|
|
|
|
void
|
|
CollationBuilder::makeTailoredCEs(UErrorCode &errorCode) {
|
|
if(U_FAILURE(errorCode)) { return; }
|
|
|
|
CollationWeights primaries, secondaries, tertiaries;
|
|
int64_t *nodesArray = nodes.getBuffer();
|
|
|
|
for(int32_t rpi = 0; rpi < rootPrimaryIndexes.size(); ++rpi) {
|
|
int32_t i = rootPrimaryIndexes.elementAti(rpi);
|
|
int64_t node = nodesArray[i];
|
|
uint32_t p = weight32FromNode(node);
|
|
uint32_t s = p == 0 ? 0 : Collation::COMMON_WEIGHT16;
|
|
uint32_t t = s;
|
|
uint32_t q = 0;
|
|
UBool pIsTailored = FALSE;
|
|
UBool sIsTailored = FALSE;
|
|
UBool tIsTailored = FALSE;
|
|
#ifdef DEBUG_COLLATION_BUILDER
|
|
printf("\nprimary %lx\n", (long)alignWeightRight(p));
|
|
#endif
|
|
int32_t pIndex = p == 0 ? 0 : rootElements.findPrimary(p);
|
|
int32_t nextIndex = nextIndexFromNode(node);
|
|
while(nextIndex != 0) {
|
|
i = nextIndex;
|
|
node = nodesArray[i];
|
|
nextIndex = nextIndexFromNode(node);
|
|
int32_t strength = strengthFromNode(node);
|
|
if(strength == UCOL_QUATERNARY) {
|
|
U_ASSERT(isTailoredNode(node));
|
|
#ifdef DEBUG_COLLATION_BUILDER
|
|
printf(" quat+ ");
|
|
#endif
|
|
if(q == 3) {
|
|
errorCode = U_BUFFER_OVERFLOW_ERROR;
|
|
errorReason = "quaternary tailoring gap too small";
|
|
return;
|
|
}
|
|
++q;
|
|
} else {
|
|
if(strength == UCOL_TERTIARY) {
|
|
if(isTailoredNode(node)) {
|
|
#ifdef DEBUG_COLLATION_BUILDER
|
|
printf(" ter+ ");
|
|
#endif
|
|
if(!tIsTailored) {
|
|
// First tailored tertiary node for [p, s].
|
|
int32_t tCount = countTailoredNodes(nodesArray, nextIndex,
|
|
UCOL_TERTIARY) + 1;
|
|
uint32_t tLimit;
|
|
if(t == 0) {
|
|
// Gap at the beginning of the tertiary CE range.
|
|
t = rootElements.getTertiaryBoundary() - 0x100;
|
|
tLimit = rootElements.getFirstTertiaryCE() & Collation::ONLY_TERTIARY_MASK;
|
|
} else if(t == BEFORE_WEIGHT16) {
|
|
tLimit = Collation::COMMON_WEIGHT16;
|
|
} else if(!pIsTailored && !sIsTailored) {
|
|
// p and s are root weights.
|
|
tLimit = rootElements.getTertiaryAfter(pIndex, s, t);
|
|
} else {
|
|
// [p, s] is tailored.
|
|
U_ASSERT(t == Collation::COMMON_WEIGHT16);
|
|
tLimit = rootElements.getTertiaryBoundary();
|
|
}
|
|
U_ASSERT(tLimit == 0x4000 || (tLimit & ~Collation::ONLY_TERTIARY_MASK) == 0);
|
|
tertiaries.initForTertiary();
|
|
if(!tertiaries.allocWeights(t, tLimit, tCount)) {
|
|
errorCode = U_BUFFER_OVERFLOW_ERROR;
|
|
errorReason = "tertiary tailoring gap too small";
|
|
return;
|
|
}
|
|
tIsTailored = TRUE;
|
|
}
|
|
t = tertiaries.nextWeight();
|
|
U_ASSERT(t != 0xffffffff);
|
|
} else {
|
|
t = weight16FromNode(node);
|
|
tIsTailored = FALSE;
|
|
#ifdef DEBUG_COLLATION_BUILDER
|
|
printf(" ter %lx\n", (long)alignWeightRight(t));
|
|
#endif
|
|
}
|
|
} else {
|
|
if(strength == UCOL_SECONDARY) {
|
|
if(isTailoredNode(node)) {
|
|
#ifdef DEBUG_COLLATION_BUILDER
|
|
printf(" sec+ ");
|
|
#endif
|
|
if(!sIsTailored) {
|
|
// First tailored secondary node for p.
|
|
int32_t sCount = countTailoredNodes(nodesArray, nextIndex,
|
|
UCOL_SECONDARY) + 1;
|
|
uint32_t sLimit;
|
|
if(s == 0) {
|
|
// Gap at the beginning of the secondary CE range.
|
|
s = rootElements.getSecondaryBoundary() - 0x100;
|
|
sLimit = rootElements.getFirstSecondaryCE() >> 16;
|
|
} else if(s == BEFORE_WEIGHT16) {
|
|
sLimit = Collation::COMMON_WEIGHT16;
|
|
} else if(!pIsTailored) {
|
|
// p is a root primary.
|
|
sLimit = rootElements.getSecondaryAfter(pIndex, s);
|
|
} else {
|
|
// p is a tailored primary.
|
|
U_ASSERT(s == Collation::COMMON_WEIGHT16);
|
|
sLimit = rootElements.getSecondaryBoundary();
|
|
}
|
|
if(s == Collation::COMMON_WEIGHT16) {
|
|
// Do not tailor into the getSortKey() range of
|
|
// compressed common secondaries.
|
|
s = rootElements.getLastCommonSecondary();
|
|
}
|
|
secondaries.initForSecondary();
|
|
if(!secondaries.allocWeights(s, sLimit, sCount)) {
|
|
errorCode = U_BUFFER_OVERFLOW_ERROR;
|
|
errorReason = "secondary tailoring gap too small";
|
|
return;
|
|
}
|
|
sIsTailored = TRUE;
|
|
}
|
|
s = secondaries.nextWeight();
|
|
U_ASSERT(s != 0xffffffff);
|
|
} else {
|
|
s = weight16FromNode(node);
|
|
sIsTailored = FALSE;
|
|
#ifdef DEBUG_COLLATION_BUILDER
|
|
printf(" sec %lx\n", (long)alignWeightRight(s));
|
|
#endif
|
|
}
|
|
} else /* UCOL_PRIMARY */ {
|
|
U_ASSERT(isTailoredNode(node));
|
|
#ifdef DEBUG_COLLATION_BUILDER
|
|
printf("pri+ ");
|
|
#endif
|
|
if(!pIsTailored) {
|
|
// First tailored primary node in this list.
|
|
int32_t pCount = countTailoredNodes(nodesArray, nextIndex,
|
|
UCOL_PRIMARY) + 1;
|
|
UBool isCompressible = baseData->isCompressiblePrimary(p);
|
|
uint32_t pLimit =
|
|
rootElements.getPrimaryAfter(p, pIndex, isCompressible);
|
|
primaries.initForPrimary(isCompressible);
|
|
if(!primaries.allocWeights(p, pLimit, pCount)) {
|
|
errorCode = U_BUFFER_OVERFLOW_ERROR; // TODO: introduce a more specific UErrorCode?
|
|
errorReason = "primary tailoring gap too small";
|
|
return;
|
|
}
|
|
pIsTailored = TRUE;
|
|
}
|
|
p = primaries.nextWeight();
|
|
U_ASSERT(p != 0xffffffff);
|
|
s = Collation::COMMON_WEIGHT16;
|
|
sIsTailored = FALSE;
|
|
}
|
|
t = s == 0 ? 0 : Collation::COMMON_WEIGHT16;
|
|
tIsTailored = FALSE;
|
|
}
|
|
q = 0;
|
|
}
|
|
if(isTailoredNode(node)) {
|
|
nodesArray[i] = Collation::makeCE(p, s, t, q);
|
|
#ifdef DEBUG_COLLATION_BUILDER
|
|
printf("%016llx\n", (long long)nodesArray[i]);
|
|
#endif
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
int32_t
|
|
CollationBuilder::countTailoredNodes(const int64_t *nodesArray, int32_t i, int32_t strength) {
|
|
int32_t count = 0;
|
|
for(;;) {
|
|
if(i == 0) { break; }
|
|
int64_t node = nodesArray[i];
|
|
if(strengthFromNode(node) < strength) { break; }
|
|
if(strengthFromNode(node) == strength) {
|
|
if(isTailoredNode(node)) {
|
|
++count;
|
|
} else {
|
|
break;
|
|
}
|
|
}
|
|
i = nextIndexFromNode(node);
|
|
}
|
|
return count;
|
|
}
|
|
|
|
class CEFinalizer : public CollationDataBuilder::CEModifier {
|
|
public:
|
|
CEFinalizer(const int64_t *ces) : finalCEs(ces) {}
|
|
virtual ~CEFinalizer();
|
|
virtual int64_t modifyCE32(uint32_t ce32) const {
|
|
U_ASSERT(!Collation::isSpecialCE32(ce32));
|
|
if(CollationBuilder::isTempCE32(ce32)) {
|
|
// retain case bits
|
|
return finalCEs[CollationBuilder::indexFromTempCE32(ce32)] | ((ce32 & 0xc0) << 8);
|
|
} else {
|
|
return Collation::NO_CE;
|
|
}
|
|
}
|
|
virtual int64_t modifyCE(int64_t ce) const {
|
|
if(CollationBuilder::isTempCE(ce)) {
|
|
// retain case bits
|
|
return finalCEs[CollationBuilder::indexFromTempCE(ce)] | (ce & 0xc000);
|
|
} else {
|
|
return Collation::NO_CE;
|
|
}
|
|
}
|
|
|
|
private:
|
|
const int64_t *finalCEs;
|
|
};
|
|
|
|
CEFinalizer::~CEFinalizer() {}
|
|
|
|
void
|
|
CollationBuilder::finalizeCEs(UErrorCode &errorCode) {
|
|
if(U_FAILURE(errorCode)) { return; }
|
|
LocalPointer<CollationDataBuilder> newBuilder(new CollationDataBuilder(errorCode));
|
|
if(newBuilder.isNull()) {
|
|
errorCode = U_MEMORY_ALLOCATION_ERROR;
|
|
return;
|
|
}
|
|
newBuilder->initForTailoring(baseData, errorCode);
|
|
CEFinalizer finalizer(nodes.getBuffer());
|
|
newBuilder->copyFrom(*dataBuilder, finalizer, errorCode);
|
|
if(U_FAILURE(errorCode)) { return; }
|
|
delete dataBuilder;
|
|
dataBuilder = newBuilder.orphan();
|
|
}
|
|
|
|
int32_t
|
|
CollationBuilder::ceStrength(int64_t ce) {
|
|
return
|
|
isTempCE(ce) ? strengthFromTempCE(ce) :
|
|
(ce & INT64_C(0xff00000000000000)) != 0 ? UCOL_PRIMARY :
|
|
((uint32_t)ce & 0xff000000) != 0 ? UCOL_SECONDARY :
|
|
ce != 0 ? UCOL_TERTIARY :
|
|
UCOL_IDENTICAL;
|
|
}
|
|
|
|
U_NAMESPACE_END
|
|
|
|
U_NAMESPACE_USE
|
|
|
|
U_CAPI UCollator * U_EXPORT2
|
|
ucol_openRules(const UChar *rules, int32_t rulesLength,
|
|
UColAttributeValue normalizationMode, UCollationStrength strength,
|
|
UParseError *parseError, UErrorCode *pErrorCode) {
|
|
if(U_FAILURE(*pErrorCode)) { return NULL; }
|
|
if(rules == NULL && rulesLength != 0) {
|
|
*pErrorCode = U_ILLEGAL_ARGUMENT_ERROR;
|
|
return NULL;
|
|
}
|
|
RuleBasedCollator *coll = new RuleBasedCollator();
|
|
if(coll == NULL) {
|
|
*pErrorCode = U_MEMORY_ALLOCATION_ERROR;
|
|
return NULL;
|
|
}
|
|
UnicodeString r((UBool)(rulesLength < 0), rules, rulesLength);
|
|
coll->internalBuildTailoring(r, strength, normalizationMode, parseError, NULL, *pErrorCode);
|
|
if(U_FAILURE(*pErrorCode)) {
|
|
delete coll;
|
|
return NULL;
|
|
}
|
|
return coll->toUCollator();
|
|
}
|
|
|
|
static const int32_t internalBufferSize = 512;
|
|
|
|
// The @internal ucol_getUnsafeSet() was moved here from ucol_sit.cpp
|
|
// because it calls UnicodeSet "builder" code that depends on all Unicode properties,
|
|
// and the rest of the collation "runtime" code only depends on normalization.
|
|
// This function is not related to the collation builder,
|
|
// but it did not seem worth moving it into its own .cpp file,
|
|
// nor rewriting it to use lower-level UnicodeSet and Normalizer2Impl methods.
|
|
U_CAPI int32_t U_EXPORT2
|
|
ucol_getUnsafeSet( const UCollator *coll,
|
|
USet *unsafe,
|
|
UErrorCode *status)
|
|
{
|
|
UChar buffer[internalBufferSize];
|
|
int32_t len = 0;
|
|
|
|
uset_clear(unsafe);
|
|
|
|
// cccpattern = "[[:^tccc=0:][:^lccc=0:]]", unfortunately variant
|
|
static const UChar cccpattern[25] = { 0x5b, 0x5b, 0x3a, 0x5e, 0x74, 0x63, 0x63, 0x63, 0x3d, 0x30, 0x3a, 0x5d,
|
|
0x5b, 0x3a, 0x5e, 0x6c, 0x63, 0x63, 0x63, 0x3d, 0x30, 0x3a, 0x5d, 0x5d, 0x00 };
|
|
|
|
// add chars that fail the fcd check
|
|
uset_applyPattern(unsafe, cccpattern, 24, USET_IGNORE_SPACE, status);
|
|
|
|
// add lead/trail surrogates
|
|
// (trail surrogates should need to be unsafe only if the caller tests for UTF-16 code *units*,
|
|
// not when testing code *points*)
|
|
uset_addRange(unsafe, 0xd800, 0xdfff);
|
|
|
|
USet *contractions = uset_open(0,0);
|
|
|
|
int32_t i = 0, j = 0;
|
|
ucol_getContractionsAndExpansions(coll, contractions, NULL, FALSE, status);
|
|
int32_t contsSize = uset_size(contractions);
|
|
UChar32 c = 0;
|
|
// Contraction set consists only of strings
|
|
// to get unsafe code points, we need to
|
|
// break the strings apart and add them to the unsafe set
|
|
for(i = 0; i < contsSize; i++) {
|
|
len = uset_getItem(contractions, i, NULL, NULL, buffer, internalBufferSize, status);
|
|
if(len > 0) {
|
|
j = 0;
|
|
while(j < len) {
|
|
U16_NEXT(buffer, j, len, c);
|
|
if(j < len) {
|
|
uset_add(unsafe, c);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
uset_close(contractions);
|
|
|
|
return uset_size(unsafe);
|
|
}
|
|
|
|
#endif // !UCONFIG_NO_COLLATION
|