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-rw-r--r--deps/icu-small/source/i18n/plurrule.cpp1678
1 files changed, 1678 insertions, 0 deletions
diff --git a/deps/icu-small/source/i18n/plurrule.cpp b/deps/icu-small/source/i18n/plurrule.cpp
new file mode 100644
index 0000000000..9d5fa5bee2
--- /dev/null
+++ b/deps/icu-small/source/i18n/plurrule.cpp
@@ -0,0 +1,1678 @@
+/*
+*******************************************************************************
+* Copyright (C) 2007-2016, International Business Machines Corporation and
+* others. All Rights Reserved.
+*******************************************************************************
+*
+* File plurrule.cpp
+*/
+
+#include <math.h>
+#include <stdio.h>
+
+#include "unicode/utypes.h"
+#include "unicode/localpointer.h"
+#include "unicode/plurrule.h"
+#include "unicode/upluralrules.h"
+#include "unicode/ures.h"
+#include "charstr.h"
+#include "cmemory.h"
+#include "cstring.h"
+#include "digitlst.h"
+#include "hash.h"
+#include "locutil.h"
+#include "mutex.h"
+#include "patternprops.h"
+#include "plurrule_impl.h"
+#include "putilimp.h"
+#include "ucln_in.h"
+#include "ustrfmt.h"
+#include "uassert.h"
+#include "uvectr32.h"
+#include "sharedpluralrules.h"
+#include "unifiedcache.h"
+#include "digitinterval.h"
+#include "visibledigits.h"
+
+
+#if !UCONFIG_NO_FORMATTING
+
+U_NAMESPACE_BEGIN
+
+static const UChar PLURAL_KEYWORD_OTHER[]={LOW_O,LOW_T,LOW_H,LOW_E,LOW_R,0};
+static const UChar PLURAL_DEFAULT_RULE[]={LOW_O,LOW_T,LOW_H,LOW_E,LOW_R,COLON,SPACE,LOW_N,0};
+static const UChar PK_IN[]={LOW_I,LOW_N,0};
+static const UChar PK_NOT[]={LOW_N,LOW_O,LOW_T,0};
+static const UChar PK_IS[]={LOW_I,LOW_S,0};
+static const UChar PK_MOD[]={LOW_M,LOW_O,LOW_D,0};
+static const UChar PK_AND[]={LOW_A,LOW_N,LOW_D,0};
+static const UChar PK_OR[]={LOW_O,LOW_R,0};
+static const UChar PK_VAR_N[]={LOW_N,0};
+static const UChar PK_VAR_I[]={LOW_I,0};
+static const UChar PK_VAR_F[]={LOW_F,0};
+static const UChar PK_VAR_T[]={LOW_T,0};
+static const UChar PK_VAR_V[]={LOW_V,0};
+static const UChar PK_WITHIN[]={LOW_W,LOW_I,LOW_T,LOW_H,LOW_I,LOW_N,0};
+static const UChar PK_DECIMAL[]={LOW_D,LOW_E,LOW_C,LOW_I,LOW_M,LOW_A,LOW_L,0};
+static const UChar PK_INTEGER[]={LOW_I,LOW_N,LOW_T,LOW_E,LOW_G,LOW_E,LOW_R,0};
+
+UOBJECT_DEFINE_RTTI_IMPLEMENTATION(PluralRules)
+UOBJECT_DEFINE_RTTI_IMPLEMENTATION(PluralKeywordEnumeration)
+
+PluralRules::PluralRules(UErrorCode& /*status*/)
+: UObject(),
+ mRules(NULL)
+{
+}
+
+PluralRules::PluralRules(const PluralRules& other)
+: UObject(other),
+ mRules(NULL)
+{
+ *this=other;
+}
+
+PluralRules::~PluralRules() {
+ delete mRules;
+}
+
+SharedPluralRules::~SharedPluralRules() {
+ delete ptr;
+}
+
+PluralRules*
+PluralRules::clone() const {
+ return new PluralRules(*this);
+}
+
+PluralRules&
+PluralRules::operator=(const PluralRules& other) {
+ if (this != &other) {
+ delete mRules;
+ if (other.mRules==NULL) {
+ mRules = NULL;
+ }
+ else {
+ mRules = new RuleChain(*other.mRules);
+ }
+ }
+
+ return *this;
+}
+
+StringEnumeration* PluralRules::getAvailableLocales(UErrorCode &status) {
+ StringEnumeration *result = new PluralAvailableLocalesEnumeration(status);
+ if (result == NULL && U_SUCCESS(status)) {
+ status = U_MEMORY_ALLOCATION_ERROR;
+ }
+ if (U_FAILURE(status)) {
+ delete result;
+ result = NULL;
+ }
+ return result;
+}
+
+
+PluralRules* U_EXPORT2
+PluralRules::createRules(const UnicodeString& description, UErrorCode& status) {
+ if (U_FAILURE(status)) {
+ return NULL;
+ }
+
+ PluralRuleParser parser;
+ PluralRules *newRules = new PluralRules(status);
+ if (U_SUCCESS(status) && newRules == NULL) {
+ status = U_MEMORY_ALLOCATION_ERROR;
+ }
+ parser.parse(description, newRules, status);
+ if (U_FAILURE(status)) {
+ delete newRules;
+ newRules = NULL;
+ }
+ return newRules;
+}
+
+
+PluralRules* U_EXPORT2
+PluralRules::createDefaultRules(UErrorCode& status) {
+ return createRules(UnicodeString(TRUE, PLURAL_DEFAULT_RULE, -1), status);
+}
+
+/******************************************************************************/
+/* Create PluralRules cache */
+
+template<> U_I18N_API
+const SharedPluralRules *LocaleCacheKey<SharedPluralRules>::createObject(
+ const void * /*unused*/, UErrorCode &status) const {
+ const char *localeId = fLoc.getName();
+ PluralRules *pr = PluralRules::internalForLocale(
+ localeId, UPLURAL_TYPE_CARDINAL, status);
+ if (U_FAILURE(status)) {
+ return NULL;
+ }
+ SharedPluralRules *result = new SharedPluralRules(pr);
+ if (result == NULL) {
+ status = U_MEMORY_ALLOCATION_ERROR;
+ delete pr;
+ return NULL;
+ }
+ result->addRef();
+ return result;
+}
+
+/* end plural rules cache */
+/******************************************************************************/
+
+const SharedPluralRules* U_EXPORT2
+PluralRules::createSharedInstance(
+ const Locale& locale, UPluralType type, UErrorCode& status) {
+ if (U_FAILURE(status)) {
+ return NULL;
+ }
+ if (type != UPLURAL_TYPE_CARDINAL) {
+ status = U_UNSUPPORTED_ERROR;
+ return NULL;
+ }
+ const SharedPluralRules *result = NULL;
+ UnifiedCache::getByLocale(locale, result, status);
+ return result;
+}
+
+PluralRules* U_EXPORT2
+PluralRules::forLocale(const Locale& locale, UErrorCode& status) {
+ return forLocale(locale, UPLURAL_TYPE_CARDINAL, status);
+}
+
+PluralRules* U_EXPORT2
+PluralRules::forLocale(const Locale& locale, UPluralType type, UErrorCode& status) {
+ if (type != UPLURAL_TYPE_CARDINAL) {
+ return internalForLocale(locale, type, status);
+ }
+ const SharedPluralRules *shared = createSharedInstance(
+ locale, type, status);
+ if (U_FAILURE(status)) {
+ return NULL;
+ }
+ PluralRules *result = (*shared)->clone();
+ shared->removeRef();
+ if (result == NULL) {
+ status = U_MEMORY_ALLOCATION_ERROR;
+ }
+ return result;
+}
+
+PluralRules* U_EXPORT2
+PluralRules::internalForLocale(const Locale& locale, UPluralType type, UErrorCode& status) {
+ if (U_FAILURE(status)) {
+ return NULL;
+ }
+ if (type >= UPLURAL_TYPE_COUNT) {
+ status = U_ILLEGAL_ARGUMENT_ERROR;
+ return NULL;
+ }
+ PluralRules *newObj = new PluralRules(status);
+ if (newObj==NULL || U_FAILURE(status)) {
+ delete newObj;
+ return NULL;
+ }
+ UnicodeString locRule = newObj->getRuleFromResource(locale, type, status);
+ // TODO: which errors, if any, should be returned?
+ if (locRule.length() == 0) {
+ // Locales with no specific rules (all numbers have the "other" category
+ // will return a U_MISSING_RESOURCE_ERROR at this point. This is not
+ // an error.
+ locRule = UnicodeString(PLURAL_DEFAULT_RULE);
+ status = U_ZERO_ERROR;
+ }
+ PluralRuleParser parser;
+ parser.parse(locRule, newObj, status);
+ // TODO: should rule parse errors be returned, or
+ // should we silently use default rules?
+ // Original impl used default rules.
+ // Ask the question to ICU Core.
+
+ return newObj;
+}
+
+UnicodeString
+PluralRules::select(int32_t number) const {
+ return select(FixedDecimal(number));
+}
+
+UnicodeString
+PluralRules::select(double number) const {
+ return select(FixedDecimal(number));
+}
+
+UnicodeString
+PluralRules::select(const FixedDecimal &number) const {
+ if (mRules == NULL) {
+ return UnicodeString(TRUE, PLURAL_DEFAULT_RULE, -1);
+ }
+ else {
+ return mRules->select(number);
+ }
+}
+
+UnicodeString
+PluralRules::select(const VisibleDigitsWithExponent &number) const {
+ if (number.getExponent() != NULL) {
+ return UnicodeString(TRUE, PLURAL_DEFAULT_RULE, -1);
+ }
+ return select(FixedDecimal(number.getMantissa()));
+}
+
+
+
+StringEnumeration*
+PluralRules::getKeywords(UErrorCode& status) const {
+ if (U_FAILURE(status)) return NULL;
+ StringEnumeration* nameEnumerator = new PluralKeywordEnumeration(mRules, status);
+ if (U_FAILURE(status)) {
+ delete nameEnumerator;
+ return NULL;
+ }
+
+ return nameEnumerator;
+}
+
+double
+PluralRules::getUniqueKeywordValue(const UnicodeString& /* keyword */) {
+ // Not Implemented.
+ return UPLRULES_NO_UNIQUE_VALUE;
+}
+
+int32_t
+PluralRules::getAllKeywordValues(const UnicodeString & /* keyword */, double * /* dest */,
+ int32_t /* destCapacity */, UErrorCode& error) {
+ error = U_UNSUPPORTED_ERROR;
+ return 0;
+}
+
+
+static double scaleForInt(double d) {
+ double scale = 1.0;
+ while (d != floor(d)) {
+ d = d * 10.0;
+ scale = scale * 10.0;
+ }
+ return scale;
+}
+
+static int32_t
+getSamplesFromString(const UnicodeString &samples, double *dest,
+ int32_t destCapacity, UErrorCode& status) {
+ int32_t sampleCount = 0;
+ int32_t sampleStartIdx = 0;
+ int32_t sampleEndIdx = 0;
+
+ //std::string ss; // TODO: debugging.
+ // std::cout << "PluralRules::getSamples(), samples = \"" << samples.toUTF8String(ss) << "\"\n";
+ for (sampleCount = 0; sampleCount < destCapacity && sampleStartIdx < samples.length(); ) {
+ sampleEndIdx = samples.indexOf(COMMA, sampleStartIdx);
+ if (sampleEndIdx == -1) {
+ sampleEndIdx = samples.length();
+ }
+ const UnicodeString &sampleRange = samples.tempSubStringBetween(sampleStartIdx, sampleEndIdx);
+ // ss.erase();
+ // std::cout << "PluralRules::getSamples(), samplesRange = \"" << sampleRange.toUTF8String(ss) << "\"\n";
+ int32_t tildeIndex = sampleRange.indexOf(TILDE);
+ if (tildeIndex < 0) {
+ FixedDecimal fixed(sampleRange, status);
+ double sampleValue = fixed.source;
+ if (fixed.visibleDecimalDigitCount == 0 || sampleValue != floor(sampleValue)) {
+ dest[sampleCount++] = sampleValue;
+ }
+ } else {
+
+ FixedDecimal fixedLo(sampleRange.tempSubStringBetween(0, tildeIndex), status);
+ FixedDecimal fixedHi(sampleRange.tempSubStringBetween(tildeIndex+1), status);
+ double rangeLo = fixedLo.source;
+ double rangeHi = fixedHi.source;
+ if (U_FAILURE(status)) {
+ break;
+ }
+ if (rangeHi < rangeLo) {
+ status = U_INVALID_FORMAT_ERROR;
+ break;
+ }
+
+ // For ranges of samples with fraction decimal digits, scale the number up so that we
+ // are adding one in the units place. Avoids roundoffs from repetitive adds of tenths.
+
+ double scale = scaleForInt(rangeLo);
+ double t = scaleForInt(rangeHi);
+ if (t > scale) {
+ scale = t;
+ }
+ rangeLo *= scale;
+ rangeHi *= scale;
+ for (double n=rangeLo; n<=rangeHi; n+=1) {
+ // Hack Alert: don't return any decimal samples with integer values that
+ // originated from a format with trailing decimals.
+ // This API is returning doubles, which can't distinguish having displayed
+ // zeros to the right of the decimal.
+ // This results in test failures with values mapping back to a different keyword.
+ double sampleValue = n/scale;
+ if (!(sampleValue == floor(sampleValue) && fixedLo.visibleDecimalDigitCount > 0)) {
+ dest[sampleCount++] = sampleValue;
+ }
+ if (sampleCount >= destCapacity) {
+ break;
+ }
+ }
+ }
+ sampleStartIdx = sampleEndIdx + 1;
+ }
+ return sampleCount;
+}
+
+
+int32_t
+PluralRules::getSamples(const UnicodeString &keyword, double *dest,
+ int32_t destCapacity, UErrorCode& status) {
+ RuleChain *rc = rulesForKeyword(keyword);
+ if (rc == NULL || destCapacity == 0 || U_FAILURE(status)) {
+ return 0;
+ }
+ int32_t numSamples = getSamplesFromString(rc->fIntegerSamples, dest, destCapacity, status);
+ if (numSamples == 0) {
+ numSamples = getSamplesFromString(rc->fDecimalSamples, dest, destCapacity, status);
+ }
+ return numSamples;
+}
+
+
+RuleChain *PluralRules::rulesForKeyword(const UnicodeString &keyword) const {
+ RuleChain *rc;
+ for (rc = mRules; rc != NULL; rc = rc->fNext) {
+ if (rc->fKeyword == keyword) {
+ break;
+ }
+ }
+ return rc;
+}
+
+
+UBool
+PluralRules::isKeyword(const UnicodeString& keyword) const {
+ if (0 == keyword.compare(PLURAL_KEYWORD_OTHER, 5)) {
+ return true;
+ }
+ return rulesForKeyword(keyword) != NULL;
+}
+
+UnicodeString
+PluralRules::getKeywordOther() const {
+ return UnicodeString(TRUE, PLURAL_KEYWORD_OTHER, 5);
+}
+
+UBool
+PluralRules::operator==(const PluralRules& other) const {
+ const UnicodeString *ptrKeyword;
+ UErrorCode status= U_ZERO_ERROR;
+
+ if ( this == &other ) {
+ return TRUE;
+ }
+ LocalPointer<StringEnumeration> myKeywordList(getKeywords(status));
+ LocalPointer<StringEnumeration> otherKeywordList(other.getKeywords(status));
+ if (U_FAILURE(status)) {
+ return FALSE;
+ }
+
+ if (myKeywordList->count(status)!=otherKeywordList->count(status)) {
+ return FALSE;
+ }
+ myKeywordList->reset(status);
+ while ((ptrKeyword=myKeywordList->snext(status))!=NULL) {
+ if (!other.isKeyword(*ptrKeyword)) {
+ return FALSE;
+ }
+ }
+ otherKeywordList->reset(status);
+ while ((ptrKeyword=otherKeywordList->snext(status))!=NULL) {
+ if (!this->isKeyword(*ptrKeyword)) {
+ return FALSE;
+ }
+ }
+ if (U_FAILURE(status)) {
+ return FALSE;
+ }
+
+ return TRUE;
+}
+
+
+void
+PluralRuleParser::parse(const UnicodeString& ruleData, PluralRules *prules, UErrorCode &status)
+{
+ if (U_FAILURE(status)) {
+ return;
+ }
+ U_ASSERT(ruleIndex == 0); // Parsers are good for a single use only!
+ ruleSrc = &ruleData;
+
+ while (ruleIndex< ruleSrc->length()) {
+ getNextToken(status);
+ if (U_FAILURE(status)) {
+ return;
+ }
+ checkSyntax(status);
+ if (U_FAILURE(status)) {
+ return;
+ }
+ switch (type) {
+ case tAnd:
+ U_ASSERT(curAndConstraint != NULL);
+ curAndConstraint = curAndConstraint->add();
+ break;
+ case tOr:
+ {
+ U_ASSERT(currentChain != NULL);
+ OrConstraint *orNode=currentChain->ruleHeader;
+ while (orNode->next != NULL) {
+ orNode = orNode->next;
+ }
+ orNode->next= new OrConstraint();
+ orNode=orNode->next;
+ orNode->next=NULL;
+ curAndConstraint = orNode->add();
+ }
+ break;
+ case tIs:
+ U_ASSERT(curAndConstraint != NULL);
+ U_ASSERT(curAndConstraint->value == -1);
+ U_ASSERT(curAndConstraint->rangeList == NULL);
+ break;
+ case tNot:
+ U_ASSERT(curAndConstraint != NULL);
+ curAndConstraint->negated=TRUE;
+ break;
+
+ case tNotEqual:
+ curAndConstraint->negated=TRUE;
+ U_FALLTHROUGH;
+ case tIn:
+ case tWithin:
+ case tEqual:
+ U_ASSERT(curAndConstraint != NULL);
+ curAndConstraint->rangeList = new UVector32(status);
+ curAndConstraint->rangeList->addElement(-1, status); // range Low
+ curAndConstraint->rangeList->addElement(-1, status); // range Hi
+ rangeLowIdx = 0;
+ rangeHiIdx = 1;
+ curAndConstraint->value=PLURAL_RANGE_HIGH;
+ curAndConstraint->integerOnly = (type != tWithin);
+ break;
+ case tNumber:
+ U_ASSERT(curAndConstraint != NULL);
+ if ( (curAndConstraint->op==AndConstraint::MOD)&&
+ (curAndConstraint->opNum == -1 ) ) {
+ curAndConstraint->opNum=getNumberValue(token);
+ }
+ else {
+ if (curAndConstraint->rangeList == NULL) {
+ // this is for an 'is' rule
+ curAndConstraint->value = getNumberValue(token);
+ } else {
+ // this is for an 'in' or 'within' rule
+ if (curAndConstraint->rangeList->elementAti(rangeLowIdx) == -1) {
+ curAndConstraint->rangeList->setElementAt(getNumberValue(token), rangeLowIdx);
+ curAndConstraint->rangeList->setElementAt(getNumberValue(token), rangeHiIdx);
+ }
+ else {
+ curAndConstraint->rangeList->setElementAt(getNumberValue(token), rangeHiIdx);
+ if (curAndConstraint->rangeList->elementAti(rangeLowIdx) >
+ curAndConstraint->rangeList->elementAti(rangeHiIdx)) {
+ // Range Lower bound > Range Upper bound.
+ // U_UNEXPECTED_TOKEN seems a little funny, but it is consistently
+ // used for all plural rule parse errors.
+ status = U_UNEXPECTED_TOKEN;
+ break;
+ }
+ }
+ }
+ }
+ break;
+ case tComma:
+ // TODO: rule syntax checking is inadequate, can happen with badly formed rules.
+ // Catch cases like "n mod 10, is 1" here instead.
+ if (curAndConstraint == NULL || curAndConstraint->rangeList == NULL) {
+ status = U_UNEXPECTED_TOKEN;
+ break;
+ }
+ U_ASSERT(curAndConstraint->rangeList->size() >= 2);
+ rangeLowIdx = curAndConstraint->rangeList->size();
+ curAndConstraint->rangeList->addElement(-1, status); // range Low
+ rangeHiIdx = curAndConstraint->rangeList->size();
+ curAndConstraint->rangeList->addElement(-1, status); // range Hi
+ break;
+ case tMod:
+ U_ASSERT(curAndConstraint != NULL);
+ curAndConstraint->op=AndConstraint::MOD;
+ break;
+ case tVariableN:
+ case tVariableI:
+ case tVariableF:
+ case tVariableT:
+ case tVariableV:
+ U_ASSERT(curAndConstraint != NULL);
+ curAndConstraint->digitsType = type;
+ break;
+ case tKeyword:
+ {
+ RuleChain *newChain = new RuleChain;
+ if (newChain == NULL) {
+ status = U_MEMORY_ALLOCATION_ERROR;
+ break;
+ }
+ newChain->fKeyword = token;
+ if (prules->mRules == NULL) {
+ prules->mRules = newChain;
+ } else {
+ // The new rule chain goes at the end of the linked list of rule chains,
+ // unless there is an "other" keyword & chain. "other" must remain last.
+ RuleChain *insertAfter = prules->mRules;
+ while (insertAfter->fNext!=NULL &&
+ insertAfter->fNext->fKeyword.compare(PLURAL_KEYWORD_OTHER, 5) != 0 ){
+ insertAfter=insertAfter->fNext;
+ }
+ newChain->fNext = insertAfter->fNext;
+ insertAfter->fNext = newChain;
+ }
+ OrConstraint *orNode = new OrConstraint();
+ newChain->ruleHeader = orNode;
+ curAndConstraint = orNode->add();
+ currentChain = newChain;
+ }
+ break;
+
+ case tInteger:
+ for (;;) {
+ getNextToken(status);
+ if (U_FAILURE(status) || type == tSemiColon || type == tEOF || type == tAt) {
+ break;
+ }
+ if (type == tEllipsis) {
+ currentChain->fIntegerSamplesUnbounded = TRUE;
+ continue;
+ }
+ currentChain->fIntegerSamples.append(token);
+ }
+ break;
+
+ case tDecimal:
+ for (;;) {
+ getNextToken(status);
+ if (U_FAILURE(status) || type == tSemiColon || type == tEOF || type == tAt) {
+ break;
+ }
+ if (type == tEllipsis) {
+ currentChain->fDecimalSamplesUnbounded = TRUE;
+ continue;
+ }
+ currentChain->fDecimalSamples.append(token);
+ }
+ break;
+
+ default:
+ break;
+ }
+ prevType=type;
+ if (U_FAILURE(status)) {
+ break;
+ }
+ }
+}
+
+UnicodeString
+PluralRules::getRuleFromResource(const Locale& locale, UPluralType type, UErrorCode& errCode) {
+ UnicodeString emptyStr;
+
+ if (U_FAILURE(errCode)) {
+ return emptyStr;
+ }
+ LocalUResourceBundlePointer rb(ures_openDirect(NULL, "plurals", &errCode));
+ if(U_FAILURE(errCode)) {
+ return emptyStr;
+ }
+ const char *typeKey;
+ switch (type) {
+ case UPLURAL_TYPE_CARDINAL:
+ typeKey = "locales";
+ break;
+ case UPLURAL_TYPE_ORDINAL:
+ typeKey = "locales_ordinals";
+ break;
+ default:
+ // Must not occur: The caller should have checked for valid types.
+ errCode = U_ILLEGAL_ARGUMENT_ERROR;
+ return emptyStr;
+ }
+ LocalUResourceBundlePointer locRes(ures_getByKey(rb.getAlias(), typeKey, NULL, &errCode));
+ if(U_FAILURE(errCode)) {
+ return emptyStr;
+ }
+ int32_t resLen=0;
+ const char *curLocaleName=locale.getName();
+ const UChar* s = ures_getStringByKey(locRes.getAlias(), curLocaleName, &resLen, &errCode);
+
+ if (s == NULL) {
+ // Check parent locales.
+ UErrorCode status = U_ZERO_ERROR;
+ char parentLocaleName[ULOC_FULLNAME_CAPACITY];
+ const char *curLocaleName=locale.getName();
+ uprv_strcpy(parentLocaleName, curLocaleName);
+
+ while (uloc_getParent(parentLocaleName, parentLocaleName,
+ ULOC_FULLNAME_CAPACITY, &status) > 0) {
+ resLen=0;
+ s = ures_getStringByKey(locRes.getAlias(), parentLocaleName, &resLen, &status);
+ if (s != NULL) {
+ errCode = U_ZERO_ERROR;
+ break;
+ }
+ status = U_ZERO_ERROR;
+ }
+ }
+ if (s==NULL) {
+ return emptyStr;
+ }
+
+ char setKey[256];
+ u_UCharsToChars(s, setKey, resLen + 1);
+ // printf("\n PluralRule: %s\n", setKey);
+
+ LocalUResourceBundlePointer ruleRes(ures_getByKey(rb.getAlias(), "rules", NULL, &errCode));
+ if(U_FAILURE(errCode)) {
+ return emptyStr;
+ }
+ LocalUResourceBundlePointer setRes(ures_getByKey(ruleRes.getAlias(), setKey, NULL, &errCode));
+ if (U_FAILURE(errCode)) {
+ return emptyStr;
+ }
+
+ int32_t numberKeys = ures_getSize(setRes.getAlias());
+ UnicodeString result;
+ const char *key=NULL;
+ for(int32_t i=0; i<numberKeys; ++i) { // Keys are zero, one, few, ...
+ UnicodeString rules = ures_getNextUnicodeString(setRes.getAlias(), &key, &errCode);
+ UnicodeString uKey(key, -1, US_INV);
+ result.append(uKey);
+ result.append(COLON);
+ result.append(rules);
+ result.append(SEMI_COLON);
+ }
+ return result;
+}
+
+
+UnicodeString
+PluralRules::getRules() const {
+ UnicodeString rules;
+ if (mRules != NULL) {
+ mRules->dumpRules(rules);
+ }
+ return rules;
+}
+
+
+AndConstraint::AndConstraint() {
+ op = AndConstraint::NONE;
+ opNum=-1;
+ value = -1;
+ rangeList = NULL;
+ negated = FALSE;
+ integerOnly = FALSE;
+ digitsType = none;
+ next=NULL;
+}
+
+
+AndConstraint::AndConstraint(const AndConstraint& other) {
+ this->op = other.op;
+ this->opNum=other.opNum;
+ this->value=other.value;
+ this->rangeList=NULL;
+ if (other.rangeList != NULL) {
+ UErrorCode status = U_ZERO_ERROR;
+ this->rangeList = new UVector32(status);
+ this->rangeList->assign(*other.rangeList, status);
+ }
+ this->integerOnly=other.integerOnly;
+ this->negated=other.negated;
+ this->digitsType = other.digitsType;
+ if (other.next==NULL) {
+ this->next=NULL;
+ }
+ else {
+ this->next = new AndConstraint(*other.next);
+ }
+}
+
+AndConstraint::~AndConstraint() {
+ delete rangeList;
+ if (next!=NULL) {
+ delete next;
+ }
+}
+
+
+UBool
+AndConstraint::isFulfilled(const FixedDecimal &number) {
+ UBool result = TRUE;
+ if (digitsType == none) {
+ // An empty AndConstraint, created by a rule with a keyword but no following expression.
+ return TRUE;
+ }
+ double n = number.get(digitsType); // pulls n | i | v | f value for the number.
+ // Will always be positive.
+ // May be non-integer (n option only)
+ do {
+ if (integerOnly && n != uprv_floor(n)) {
+ result = FALSE;
+ break;
+ }
+
+ if (op == MOD) {
+ n = fmod(n, opNum);
+ }
+ if (rangeList == NULL) {
+ result = value == -1 || // empty rule
+ n == value; // 'is' rule
+ break;
+ }
+ result = FALSE; // 'in' or 'within' rule
+ for (int32_t r=0; r<rangeList->size(); r+=2) {
+ if (rangeList->elementAti(r) <= n && n <= rangeList->elementAti(r+1)) {
+ result = TRUE;
+ break;
+ }
+ }
+ } while (FALSE);
+
+ if (negated) {
+ result = !result;
+ }
+ return result;
+}
+
+
+AndConstraint*
+AndConstraint::add()
+{
+ this->next = new AndConstraint();
+ return this->next;
+}
+
+OrConstraint::OrConstraint() {
+ childNode=NULL;
+ next=NULL;
+}
+
+OrConstraint::OrConstraint(const OrConstraint& other) {
+ if ( other.childNode == NULL ) {
+ this->childNode = NULL;
+ }
+ else {
+ this->childNode = new AndConstraint(*(other.childNode));
+ }
+ if (other.next == NULL ) {
+ this->next = NULL;
+ }
+ else {
+ this->next = new OrConstraint(*(other.next));
+ }
+}
+
+OrConstraint::~OrConstraint() {
+ if (childNode!=NULL) {
+ delete childNode;
+ }
+ if (next!=NULL) {
+ delete next;
+ }
+}
+
+AndConstraint*
+OrConstraint::add()
+{
+ OrConstraint *curOrConstraint=this;
+ {
+ while (curOrConstraint->next!=NULL) {
+ curOrConstraint = curOrConstraint->next;
+ }
+ U_ASSERT(curOrConstraint->childNode == NULL);
+ curOrConstraint->childNode = new AndConstraint();
+ }
+ return curOrConstraint->childNode;
+}
+
+UBool
+OrConstraint::isFulfilled(const FixedDecimal &number) {
+ OrConstraint* orRule=this;
+ UBool result=FALSE;
+
+ while (orRule!=NULL && !result) {
+ result=TRUE;
+ AndConstraint* andRule = orRule->childNode;
+ while (andRule!=NULL && result) {
+ result = andRule->isFulfilled(number);
+ andRule=andRule->next;
+ }
+ orRule = orRule->next;
+ }
+
+ return result;
+}
+
+
+RuleChain::RuleChain(): fKeyword(), fNext(NULL), ruleHeader(NULL), fDecimalSamples(), fIntegerSamples(),
+ fDecimalSamplesUnbounded(FALSE), fIntegerSamplesUnbounded(FALSE) {
+}
+
+RuleChain::RuleChain(const RuleChain& other) :
+ fKeyword(other.fKeyword), fNext(NULL), ruleHeader(NULL), fDecimalSamples(other.fDecimalSamples),
+ fIntegerSamples(other.fIntegerSamples), fDecimalSamplesUnbounded(other.fDecimalSamplesUnbounded),
+ fIntegerSamplesUnbounded(other.fIntegerSamplesUnbounded) {
+ if (other.ruleHeader != NULL) {
+ this->ruleHeader = new OrConstraint(*(other.ruleHeader));
+ }
+ if (other.fNext != NULL ) {
+ this->fNext = new RuleChain(*other.fNext);
+ }
+}
+
+RuleChain::~RuleChain() {
+ delete fNext;
+ delete ruleHeader;
+}
+
+
+UnicodeString
+RuleChain::select(const FixedDecimal &number) const {
+ if (!number.isNanOrInfinity) {
+ for (const RuleChain *rules = this; rules != NULL; rules = rules->fNext) {
+ if (rules->ruleHeader->isFulfilled(number)) {
+ return rules->fKeyword;
+ }
+ }
+ }
+ return UnicodeString(TRUE, PLURAL_KEYWORD_OTHER, 5);
+}
+
+static UnicodeString tokenString(tokenType tok) {
+ UnicodeString s;
+ switch (tok) {
+ case tVariableN:
+ s.append(LOW_N); break;
+ case tVariableI:
+ s.append(LOW_I); break;
+ case tVariableF:
+ s.append(LOW_F); break;
+ case tVariableV:
+ s.append(LOW_V); break;
+ case tVariableT:
+ s.append(LOW_T); break;
+ default:
+ s.append(TILDE);
+ }
+ return s;
+}
+
+void
+RuleChain::dumpRules(UnicodeString& result) {
+ UChar digitString[16];
+
+ if ( ruleHeader != NULL ) {
+ result += fKeyword;
+ result += COLON;
+ result += SPACE;
+ OrConstraint* orRule=ruleHeader;
+ while ( orRule != NULL ) {
+ AndConstraint* andRule=orRule->childNode;
+ while ( andRule != NULL ) {
+ if ((andRule->op==AndConstraint::NONE) && (andRule->rangeList==NULL) && (andRule->value == -1)) {
+ // Empty Rules.
+ } else if ( (andRule->op==AndConstraint::NONE) && (andRule->rangeList==NULL) ) {
+ result += tokenString(andRule->digitsType);
+ result += UNICODE_STRING_SIMPLE(" is ");
+ if (andRule->negated) {
+ result += UNICODE_STRING_SIMPLE("not ");
+ }
+ uprv_itou(digitString,16, andRule->value,10,0);
+ result += UnicodeString(digitString);
+ }
+ else {
+ result += tokenString(andRule->digitsType);
+ result += SPACE;
+ if (andRule->op==AndConstraint::MOD) {
+ result += UNICODE_STRING_SIMPLE("mod ");
+ uprv_itou(digitString,16, andRule->opNum,10,0);
+ result += UnicodeString(digitString);
+ }
+ if (andRule->rangeList==NULL) {
+ if (andRule->negated) {
+ result += UNICODE_STRING_SIMPLE(" is not ");
+ uprv_itou(digitString,16, andRule->value,10,0);
+ result += UnicodeString(digitString);
+ }
+ else {
+ result += UNICODE_STRING_SIMPLE(" is ");
+ uprv_itou(digitString,16, andRule->value,10,0);
+ result += UnicodeString(digitString);
+ }
+ }
+ else {
+ if (andRule->negated) {
+ if ( andRule->integerOnly ) {
+ result += UNICODE_STRING_SIMPLE(" not in ");
+ }
+ else {
+ result += UNICODE_STRING_SIMPLE(" not within ");
+ }
+ }
+ else {
+ if ( andRule->integerOnly ) {
+ result += UNICODE_STRING_SIMPLE(" in ");
+ }
+ else {
+ result += UNICODE_STRING_SIMPLE(" within ");
+ }
+ }
+ for (int32_t r=0; r<andRule->rangeList->size(); r+=2) {
+ int32_t rangeLo = andRule->rangeList->elementAti(r);
+ int32_t rangeHi = andRule->rangeList->elementAti(r+1);
+ uprv_itou(digitString,16, rangeLo, 10, 0);
+ result += UnicodeString(digitString);
+ result += UNICODE_STRING_SIMPLE("..");
+ uprv_itou(digitString,16, rangeHi, 10,0);
+ result += UnicodeString(digitString);
+ if (r+2 < andRule->rangeList->size()) {
+ result += UNICODE_STRING_SIMPLE(", ");
+ }
+ }
+ }
+ }
+ if ( (andRule=andRule->next) != NULL) {
+ result += UNICODE_STRING_SIMPLE(" and ");
+ }
+ }
+ if ( (orRule = orRule->next) != NULL ) {
+ result += UNICODE_STRING_SIMPLE(" or ");
+ }
+ }
+ }
+ if ( fNext != NULL ) {
+ result += UNICODE_STRING_SIMPLE("; ");
+ fNext->dumpRules(result);
+ }
+}
+
+
+UErrorCode
+RuleChain::getKeywords(int32_t capacityOfKeywords, UnicodeString* keywords, int32_t& arraySize) const {
+ if ( arraySize < capacityOfKeywords-1 ) {
+ keywords[arraySize++]=fKeyword;
+ }
+ else {
+ return U_BUFFER_OVERFLOW_ERROR;
+ }
+
+ if ( fNext != NULL ) {
+ return fNext->getKeywords(capacityOfKeywords, keywords, arraySize);
+ }
+ else {
+ return U_ZERO_ERROR;
+ }
+}
+
+UBool
+RuleChain::isKeyword(const UnicodeString& keywordParam) const {
+ if ( fKeyword == keywordParam ) {
+ return TRUE;
+ }
+
+ if ( fNext != NULL ) {
+ return fNext->isKeyword(keywordParam);
+ }
+ else {
+ return FALSE;
+ }
+}
+
+
+PluralRuleParser::PluralRuleParser() :
+ ruleIndex(0), token(), type(none), prevType(none),
+ curAndConstraint(NULL), currentChain(NULL), rangeLowIdx(-1), rangeHiIdx(-1)
+{
+}
+
+PluralRuleParser::~PluralRuleParser() {
+}
+
+
+int32_t
+PluralRuleParser::getNumberValue(const UnicodeString& token) {
+ int32_t i;
+ char digits[128];
+
+ i = token.extract(0, token.length(), digits, UPRV_LENGTHOF(digits), US_INV);
+ digits[i]='\0';
+
+ return((int32_t)atoi(digits));
+}
+
+
+void
+PluralRuleParser::checkSyntax(UErrorCode &status)
+{
+ if (U_FAILURE(status)) {
+ return;
+ }
+ if (!(prevType==none || prevType==tSemiColon)) {
+ type = getKeyType(token, type); // Switch token type from tKeyword if we scanned a reserved word,
+ // and we are not at the start of a rule, where a
+ // keyword is expected.
+ }
+
+ switch(prevType) {
+ case none:
+ case tSemiColon:
+ if (type!=tKeyword && type != tEOF) {
+ status = U_UNEXPECTED_TOKEN;
+ }
+ break;
+ case tVariableN:
+ case tVariableI:
+ case tVariableF:
+ case tVariableT:
+ case tVariableV:
+ if (type != tIs && type != tMod && type != tIn &&
+ type != tNot && type != tWithin && type != tEqual && type != tNotEqual) {
+ status = U_UNEXPECTED_TOKEN;
+ }
+ break;
+ case tKeyword:
+ if (type != tColon) {
+ status = U_UNEXPECTED_TOKEN;
+ }
+ break;
+ case tColon:
+ if (!(type == tVariableN ||
+ type == tVariableI ||
+ type == tVariableF ||
+ type == tVariableT ||
+ type == tVariableV ||
+ type == tAt)) {
+ status = U_UNEXPECTED_TOKEN;
+ }
+ break;
+ case tIs:
+ if ( type != tNumber && type != tNot) {
+ status = U_UNEXPECTED_TOKEN;
+ }
+ break;
+ case tNot:
+ if (type != tNumber && type != tIn && type != tWithin) {
+ status = U_UNEXPECTED_TOKEN;
+ }
+ break;
+ case tMod:
+ case tDot2:
+ case tIn:
+ case tWithin:
+ case tEqual:
+ case tNotEqual:
+ if (type != tNumber) {
+ status = U_UNEXPECTED_TOKEN;
+ }
+ break;
+ case tAnd:
+ case tOr:
+ if ( type != tVariableN &&
+ type != tVariableI &&
+ type != tVariableF &&
+ type != tVariableT &&
+ type != tVariableV) {
+ status = U_UNEXPECTED_TOKEN;
+ }
+ break;
+ case tComma:
+ if (type != tNumber) {
+ status = U_UNEXPECTED_TOKEN;
+ }
+ break;
+ case tNumber:
+ if (type != tDot2 && type != tSemiColon && type != tIs && type != tNot &&
+ type != tIn && type != tEqual && type != tNotEqual && type != tWithin &&
+ type != tAnd && type != tOr && type != tComma && type != tAt &&
+ type != tEOF)
+ {
+ status = U_UNEXPECTED_TOKEN;
+ }
+ // TODO: a comma following a number that is not part of a range will be allowed.
+ // It's not the only case of this sort of thing. Parser needs a re-write.
+ break;
+ case tAt:
+ if (type != tDecimal && type != tInteger) {
+ status = U_UNEXPECTED_TOKEN;
+ }
+ break;
+ default:
+ status = U_UNEXPECTED_TOKEN;
+ break;
+ }
+}
+
+
+/*
+ * Scan the next token from the input rules.
+ * rules and returned token type are in the parser state variables.
+ */
+void
+PluralRuleParser::getNextToken(UErrorCode &status)
+{
+ if (U_FAILURE(status)) {
+ return;
+ }
+
+ UChar ch;
+ while (ruleIndex < ruleSrc->length()) {
+ ch = ruleSrc->charAt(ruleIndex);
+ type = charType(ch);
+ if (type != tSpace) {
+ break;
+ }
+ ++(ruleIndex);
+ }
+ if (ruleIndex >= ruleSrc->length()) {
+ type = tEOF;
+ return;
+ }
+ int32_t curIndex= ruleIndex;
+
+ switch (type) {
+ case tColon:
+ case tSemiColon:
+ case tComma:
+ case tEllipsis:
+ case tTilde: // scanned '~'
+ case tAt: // scanned '@'
+ case tEqual: // scanned '='
+ case tMod: // scanned '%'
+ // Single character tokens.
+ ++curIndex;
+ break;
+
+ case tNotEqual: // scanned '!'
+ if (ruleSrc->charAt(curIndex+1) == EQUALS) {
+ curIndex += 2;
+ } else {
+ type = none;
+ curIndex += 1;
+ }
+ break;
+
+ case tKeyword:
+ while (type == tKeyword && ++curIndex < ruleSrc->length()) {
+ ch = ruleSrc->charAt(curIndex);
+ type = charType(ch);
+ }
+ type = tKeyword;
+ break;
+
+ case tNumber:
+ while (type == tNumber && ++curIndex < ruleSrc->length()) {
+ ch = ruleSrc->charAt(curIndex);
+ type = charType(ch);
+ }
+ type = tNumber;
+ break;
+
+ case tDot:
+ // We could be looking at either ".." in a range, or "..." at the end of a sample.
+ if (curIndex+1 >= ruleSrc->length() || ruleSrc->charAt(curIndex+1) != DOT) {
+ ++curIndex;
+ break; // Single dot
+ }
+ if (curIndex+2 >= ruleSrc->length() || ruleSrc->charAt(curIndex+2) != DOT) {
+ curIndex += 2;
+ type = tDot2;
+ break; // double dot
+ }
+ type = tEllipsis;
+ curIndex += 3;
+ break; // triple dot
+
+ default:
+ status = U_UNEXPECTED_TOKEN;
+ ++curIndex;
+ break;
+ }
+
+ U_ASSERT(ruleIndex <= ruleSrc->length());
+ U_ASSERT(curIndex <= ruleSrc->length());
+ token=UnicodeString(*ruleSrc, ruleIndex, curIndex-ruleIndex);
+ ruleIndex = curIndex;
+}
+
+tokenType
+PluralRuleParser::charType(UChar ch) {
+ if ((ch>=U_ZERO) && (ch<=U_NINE)) {
+ return tNumber;
+ }
+ if (ch>=LOW_A && ch<=LOW_Z) {
+ return tKeyword;
+ }
+ switch (ch) {
+ case COLON:
+ return tColon;
+ case SPACE:
+ return tSpace;
+ case SEMI_COLON:
+ return tSemiColon;
+ case DOT:
+ return tDot;
+ case COMMA:
+ return tComma;
+ case EXCLAMATION:
+ return tNotEqual;
+ case EQUALS:
+ return tEqual;
+ case PERCENT_SIGN:
+ return tMod;
+ case AT:
+ return tAt;
+ case ELLIPSIS:
+ return tEllipsis;
+ case TILDE:
+ return tTilde;
+ default :
+ return none;
+ }
+}
+
+
+// Set token type for reserved words in the Plural Rule syntax.
+
+tokenType
+PluralRuleParser::getKeyType(const UnicodeString &token, tokenType keyType)
+{
+ if (keyType != tKeyword) {
+ return keyType;
+ }
+
+ if (0 == token.compare(PK_VAR_N, 1)) {
+ keyType = tVariableN;
+ } else if (0 == token.compare(PK_VAR_I, 1)) {
+ keyType = tVariableI;
+ } else if (0 == token.compare(PK_VAR_F, 1)) {
+ keyType = tVariableF;
+ } else if (0 == token.compare(PK_VAR_T, 1)) {
+ keyType = tVariableT;
+ } else if (0 == token.compare(PK_VAR_V, 1)) {
+ keyType = tVariableV;
+ } else if (0 == token.compare(PK_IS, 2)) {
+ keyType = tIs;
+ } else if (0 == token.compare(PK_AND, 3)) {
+ keyType = tAnd;
+ } else if (0 == token.compare(PK_IN, 2)) {
+ keyType = tIn;
+ } else if (0 == token.compare(PK_WITHIN, 6)) {
+ keyType = tWithin;
+ } else if (0 == token.compare(PK_NOT, 3)) {
+ keyType = tNot;
+ } else if (0 == token.compare(PK_MOD, 3)) {
+ keyType = tMod;
+ } else if (0 == token.compare(PK_OR, 2)) {
+ keyType = tOr;
+ } else if (0 == token.compare(PK_DECIMAL, 7)) {
+ keyType = tDecimal;
+ } else if (0 == token.compare(PK_INTEGER, 7)) {
+ keyType = tInteger;
+ }
+ return keyType;
+}
+
+
+PluralKeywordEnumeration::PluralKeywordEnumeration(RuleChain *header, UErrorCode& status)
+ : pos(0), fKeywordNames(status) {
+ if (U_FAILURE(status)) {
+ return;
+ }
+ fKeywordNames.setDeleter(uprv_deleteUObject);
+ UBool addKeywordOther=TRUE;
+ RuleChain *node=header;
+ while(node!=NULL) {
+ fKeywordNames.addElement(new UnicodeString(node->fKeyword), status);
+ if (U_FAILURE(status)) {
+ return;
+ }
+ if (0 == node->fKeyword.compare(PLURAL_KEYWORD_OTHER, 5)) {
+ addKeywordOther= FALSE;
+ }
+ node=node->fNext;
+ }
+
+ if (addKeywordOther) {
+ fKeywordNames.addElement(new UnicodeString(PLURAL_KEYWORD_OTHER), status);
+ }
+}
+
+const UnicodeString*
+PluralKeywordEnumeration::snext(UErrorCode& status) {
+ if (U_SUCCESS(status) && pos < fKeywordNames.size()) {
+ return (const UnicodeString*)fKeywordNames.elementAt(pos++);
+ }
+ return NULL;
+}
+
+void
+PluralKeywordEnumeration::reset(UErrorCode& /*status*/) {
+ pos=0;
+}
+
+int32_t
+PluralKeywordEnumeration::count(UErrorCode& /*status*/) const {
+ return fKeywordNames.size();
+}
+
+PluralKeywordEnumeration::~PluralKeywordEnumeration() {
+}
+
+FixedDecimal::FixedDecimal(const VisibleDigits &digits) {
+ digits.getFixedDecimal(
+ source, intValue, decimalDigits,
+ decimalDigitsWithoutTrailingZeros,
+ visibleDecimalDigitCount, hasIntegerValue);
+ isNegative = digits.isNegative();
+ isNanOrInfinity = digits.isNaNOrInfinity();
+}
+
+FixedDecimal::FixedDecimal(double n, int32_t v, int64_t f) {
+ init(n, v, f);
+ // check values. TODO make into unit test.
+ //
+ // long visiblePower = (int) Math.pow(10, v);
+ // if (decimalDigits > visiblePower) {
+ // throw new IllegalArgumentException();
+ // }
+ // double fraction = intValue + (decimalDigits / (double) visiblePower);
+ // if (fraction != source) {
+ // double diff = Math.abs(fraction - source)/(Math.abs(fraction) + Math.abs(source));
+ // if (diff > 0.00000001d) {
+ // throw new IllegalArgumentException();
+ // }
+ // }
+}
+
+FixedDecimal::FixedDecimal(double n, int32_t v) {
+ // Ugly, but for samples we don't care.
+ init(n, v, getFractionalDigits(n, v));
+}
+
+FixedDecimal::FixedDecimal(double n) {
+ init(n);
+}
+
+FixedDecimal::FixedDecimal() {
+ init(0, 0, 0);
+}
+
+
+// Create a FixedDecimal from a UnicodeString containing a number.
+// Inefficient, but only used for samples, so simplicity trumps efficiency.
+
+FixedDecimal::FixedDecimal(const UnicodeString &num, UErrorCode &status) {
+ CharString cs;
+ cs.appendInvariantChars(num, status);
+ DigitList dl;
+ dl.set(cs.toStringPiece(), status);
+ if (U_FAILURE(status)) {
+ init(0, 0, 0);
+ return;
+ }
+ int32_t decimalPoint = num.indexOf(DOT);
+ double n = dl.getDouble();
+ if (decimalPoint == -1) {
+ init(n, 0, 0);
+ } else {
+ int32_t v = num.length() - decimalPoint - 1;
+ init(n, v, getFractionalDigits(n, v));
+ }
+}
+
+
+FixedDecimal::FixedDecimal(const FixedDecimal &other) {
+ source = other.source;
+ visibleDecimalDigitCount = other.visibleDecimalDigitCount;
+ decimalDigits = other.decimalDigits;
+ decimalDigitsWithoutTrailingZeros = other.decimalDigitsWithoutTrailingZeros;
+ intValue = other.intValue;
+ hasIntegerValue = other.hasIntegerValue;
+ isNegative = other.isNegative;
+ isNanOrInfinity = other.isNanOrInfinity;
+}
+
+
+void FixedDecimal::init(double n) {
+ int32_t numFractionDigits = decimals(n);
+ init(n, numFractionDigits, getFractionalDigits(n, numFractionDigits));
+}
+
+
+void FixedDecimal::init(double n, int32_t v, int64_t f) {
+ isNegative = n < 0.0;
+ source = fabs(n);
+ isNanOrInfinity = uprv_isNaN(source) || uprv_isPositiveInfinity(source);
+ if (isNanOrInfinity) {
+ v = 0;
+ f = 0;
+ intValue = 0;
+ hasIntegerValue = FALSE;
+ } else {
+ intValue = (int64_t)source;
+ hasIntegerValue = (source == intValue);
+ }
+
+ visibleDecimalDigitCount = v;
+ decimalDigits = f;
+ if (f == 0) {
+ decimalDigitsWithoutTrailingZeros = 0;
+ } else {
+ int64_t fdwtz = f;
+ while ((fdwtz%10) == 0) {
+ fdwtz /= 10;
+ }
+ decimalDigitsWithoutTrailingZeros = fdwtz;
+ }
+}
+
+
+// Fast path only exact initialization. Return true if successful.
+// Note: Do not multiply by 10 each time through loop, rounding cruft can build
+// up that makes the check for an integer result fail.
+// A single multiply of the original number works more reliably.
+static int32_t p10[] = {1, 10, 100, 1000, 10000};
+UBool FixedDecimal::quickInit(double n) {
+ UBool success = FALSE;
+ n = fabs(n);
+ int32_t numFractionDigits;
+ for (numFractionDigits = 0; numFractionDigits <= 3; numFractionDigits++) {
+ double scaledN = n * p10[numFractionDigits];
+ if (scaledN == floor(scaledN)) {
+ success = TRUE;
+ break;
+ }
+ }
+ if (success) {
+ init(n, numFractionDigits, getFractionalDigits(n, numFractionDigits));
+ }
+ return success;
+}
+
+
+
+int32_t FixedDecimal::decimals(double n) {
+ // Count the number of decimal digits in the fraction part of the number, excluding trailing zeros.
+ // fastpath the common cases, integers or fractions with 3 or fewer digits
+ n = fabs(n);
+ for (int ndigits=0; ndigits<=3; ndigits++) {
+ double scaledN = n * p10[ndigits];
+ if (scaledN == floor(scaledN)) {
+ return ndigits;
+ }
+ }
+
+ // Slow path, convert with sprintf, parse converted output.
+ char buf[30] = {0};
+ sprintf(buf, "%1.15e", n);
+ // formatted number looks like this: 1.234567890123457e-01
+ int exponent = atoi(buf+18);
+ int numFractionDigits = 15;
+ for (int i=16; ; --i) {
+ if (buf[i] != '0') {
+ break;
+ }
+ --numFractionDigits;
+ }
+ numFractionDigits -= exponent; // Fraction part of fixed point representation.
+ return numFractionDigits;
+}
+
+
+// Get the fraction digits of a double, represented as an integer.
+// v is the number of visible fraction digits in the displayed form of the number.
+// Example: n = 1001.234, v = 6, result = 234000
+// TODO: need to think through how this is used in the plural rule context.
+// This function can easily encounter integer overflow,
+// and can easily return noise digits when the precision of a double is exceeded.
+
+int64_t FixedDecimal::getFractionalDigits(double n, int32_t v) {
+ if (v == 0 || n == floor(n) || uprv_isNaN(n) || uprv_isPositiveInfinity(n)) {
+ return 0;
+ }
+ n = fabs(n);
+ double fract = n - floor(n);
+ switch (v) {
+ case 1: return (int64_t)(fract*10.0 + 0.5);
+ case 2: return (int64_t)(fract*100.0 + 0.5);
+ case 3: return (int64_t)(fract*1000.0 + 0.5);
+ default:
+ double scaled = floor(fract * pow(10.0, (double)v) + 0.5);
+ if (scaled > U_INT64_MAX) {
+ return U_INT64_MAX;
+ } else {
+ return (int64_t)scaled;
+ }
+ }
+}
+
+
+void FixedDecimal::adjustForMinFractionDigits(int32_t minFractionDigits) {
+ int32_t numTrailingFractionZeros = minFractionDigits - visibleDecimalDigitCount;
+ if (numTrailingFractionZeros > 0) {
+ for (int32_t i=0; i<numTrailingFractionZeros; i++) {
+ // Do not let the decimalDigits value overflow if there are many trailing zeros.
+ // Limit the value to 18 digits, the most that a 64 bit int can fully represent.
+ if (decimalDigits >= 100000000000000000LL) {
+ break;
+ }
+ decimalDigits *= 10;
+ }
+ visibleDecimalDigitCount += numTrailingFractionZeros;
+ }
+}
+
+
+double FixedDecimal::get(tokenType operand) const {
+ switch(operand) {
+ case tVariableN: return source;
+ case tVariableI: return (double)intValue;
+ case tVariableF: return (double)decimalDigits;
+ case tVariableT: return (double)decimalDigitsWithoutTrailingZeros;
+ case tVariableV: return visibleDecimalDigitCount;
+ default:
+ U_ASSERT(FALSE); // unexpected.
+ return source;
+ }
+}
+
+int32_t FixedDecimal::getVisibleFractionDigitCount() const {
+ return visibleDecimalDigitCount;
+}
+
+
+
+PluralAvailableLocalesEnumeration::PluralAvailableLocalesEnumeration(UErrorCode &status) {
+ fLocales = NULL;
+ fRes = NULL;
+ fOpenStatus = status;
+ if (U_FAILURE(status)) {
+ return;
+ }
+ fOpenStatus = U_ZERO_ERROR;
+ LocalUResourceBundlePointer rb(ures_openDirect(NULL, "plurals", &fOpenStatus));
+ fLocales = ures_getByKey(rb.getAlias(), "locales", NULL, &fOpenStatus);
+}
+
+PluralAvailableLocalesEnumeration::~PluralAvailableLocalesEnumeration() {
+ ures_close(fLocales);
+ ures_close(fRes);
+ fLocales = NULL;
+ fRes = NULL;
+}
+
+const char *PluralAvailableLocalesEnumeration::next(int32_t *resultLength, UErrorCode &status) {
+ if (U_FAILURE(status)) {
+ return NULL;
+ }
+ if (U_FAILURE(fOpenStatus)) {
+ status = fOpenStatus;
+ return NULL;
+ }
+ fRes = ures_getNextResource(fLocales, fRes, &status);
+ if (fRes == NULL || U_FAILURE(status)) {
+ if (status == U_INDEX_OUTOFBOUNDS_ERROR) {
+ status = U_ZERO_ERROR;
+ }
+ return NULL;
+ }
+ const char *result = ures_getKey(fRes);
+ if (resultLength != NULL) {
+ *resultLength = uprv_strlen(result);
+ }
+ return result;
+}
+
+
+void PluralAvailableLocalesEnumeration::reset(UErrorCode &status) {
+ if (U_FAILURE(status)) {
+ return;
+ }
+ if (U_FAILURE(fOpenStatus)) {
+ status = fOpenStatus;
+ return;
+ }
+ ures_resetIterator(fLocales);
+}
+
+int32_t PluralAvailableLocalesEnumeration::count(UErrorCode &status) const {
+ if (U_FAILURE(status)) {
+ return 0;
+ }
+ if (U_FAILURE(fOpenStatus)) {
+ status = fOpenStatus;
+ return 0;
+ }
+ return ures_getSize(fLocales);
+}
+
+U_NAMESPACE_END
+
+
+#endif /* #if !UCONFIG_NO_FORMATTING */
+
+//eof
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-26 12:54:39 +0000