564 lines
22 KiB
C++
564 lines
22 KiB
C++
// © 2017 and later: Unicode, Inc. and others.
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// License & terms of use: http://www.unicode.org/copyright.html
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#include "unicode/utypes.h"
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#if !UCONFIG_NO_FORMATTING
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#include "cstring.h"
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#include "unicode/ures.h"
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#include "uresimp.h"
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#include "charstr.h"
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#include "number_formatimpl.h"
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#include "unicode/numfmt.h"
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#include "number_patternstring.h"
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#include "number_utils.h"
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#include "unicode/numberformatter.h"
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#include "unicode/dcfmtsym.h"
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#include "number_scientific.h"
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#include "number_compact.h"
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#include "uresimp.h"
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#include "ureslocs.h"
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using namespace icu;
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using namespace icu::number;
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using namespace icu::number::impl;
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namespace {
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struct CurrencyFormatInfoResult {
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bool exists;
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const char16_t* pattern;
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const char16_t* decimalSeparator;
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const char16_t* groupingSeparator;
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};
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CurrencyFormatInfoResult
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getCurrencyFormatInfo(const Locale& locale, const char* isoCode, UErrorCode& status) {
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// TODO: Load this data in a centralized location like ICU4J?
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// TODO: Move this into the CurrencySymbols class?
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// TODO: Parts of this same data are loaded in dcfmtsym.cpp; should clean up.
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CurrencyFormatInfoResult result = {false, nullptr, nullptr, nullptr};
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if (U_FAILURE(status)) { return result; }
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CharString key;
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key.append("Currencies/", status);
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key.append(isoCode, status);
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UErrorCode localStatus = status;
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LocalUResourceBundlePointer bundle(ures_open(U_ICUDATA_CURR, locale.getName(), &localStatus));
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ures_getByKeyWithFallback(bundle.getAlias(), key.data(), bundle.getAlias(), &localStatus);
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if (U_SUCCESS(localStatus) &&
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ures_getSize(bundle.getAlias()) > 2) { // the length is 3 if more data is present
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ures_getByIndex(bundle.getAlias(), 2, bundle.getAlias(), &localStatus);
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int32_t dummy;
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result.exists = true;
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result.pattern = ures_getStringByIndex(bundle.getAlias(), 0, &dummy, &localStatus);
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result.decimalSeparator = ures_getStringByIndex(bundle.getAlias(), 1, &dummy, &localStatus);
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result.groupingSeparator = ures_getStringByIndex(bundle.getAlias(), 2, &dummy, &localStatus);
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status = localStatus;
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} else if (localStatus != U_MISSING_RESOURCE_ERROR) {
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status = localStatus;
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}
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return result;
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}
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} // namespace
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MicroPropsGenerator::~MicroPropsGenerator() = default;
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NumberFormatterImpl::NumberFormatterImpl(const MacroProps& macros, UErrorCode& status)
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: NumberFormatterImpl(macros, true, status) {
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}
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int32_t NumberFormatterImpl::formatStatic(const MacroProps& macros, DecimalQuantity& inValue,
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FormattedStringBuilder& outString, UErrorCode& status) {
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NumberFormatterImpl impl(macros, false, status);
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MicroProps& micros = impl.preProcessUnsafe(inValue, status);
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if (U_FAILURE(status)) { return 0; }
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int32_t length = writeNumber(micros, inValue, outString, 0, status);
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length += writeAffixes(micros, outString, 0, length, status);
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return length;
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}
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int32_t NumberFormatterImpl::getPrefixSuffixStatic(const MacroProps& macros, Signum signum,
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StandardPlural::Form plural,
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FormattedStringBuilder& outString, UErrorCode& status) {
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NumberFormatterImpl impl(macros, false, status);
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return impl.getPrefixSuffixUnsafe(signum, plural, outString, status);
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}
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// NOTE: C++ SPECIFIC DIFFERENCE FROM JAVA:
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// The "safe" apply method uses a new MicroProps. In the MicroPropsGenerator, fMicros is copied into the new instance.
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// The "unsafe" method simply re-uses fMicros, eliminating the extra copy operation.
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// See MicroProps::processQuantity() for details.
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int32_t NumberFormatterImpl::format(DecimalQuantity& inValue, FormattedStringBuilder& outString,
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UErrorCode& status) const {
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MicroProps micros;
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preProcess(inValue, micros, status);
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if (U_FAILURE(status)) { return 0; }
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int32_t length = writeNumber(micros, inValue, outString, 0, status);
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length += writeAffixes(micros, outString, 0, length, status);
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return length;
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}
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void NumberFormatterImpl::preProcess(DecimalQuantity& inValue, MicroProps& microsOut,
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UErrorCode& status) const {
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if (U_FAILURE(status)) { return; }
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if (fMicroPropsGenerator == nullptr) {
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status = U_INTERNAL_PROGRAM_ERROR;
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return;
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}
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fMicroPropsGenerator->processQuantity(inValue, microsOut, status);
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microsOut.integerWidth.apply(inValue, status);
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}
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MicroProps& NumberFormatterImpl::preProcessUnsafe(DecimalQuantity& inValue, UErrorCode& status) {
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if (U_FAILURE(status)) {
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return fMicros; // must always return a value
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}
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if (fMicroPropsGenerator == nullptr) {
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status = U_INTERNAL_PROGRAM_ERROR;
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return fMicros; // must always return a value
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}
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fMicroPropsGenerator->processQuantity(inValue, fMicros, status);
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fMicros.integerWidth.apply(inValue, status);
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return fMicros;
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}
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int32_t NumberFormatterImpl::getPrefixSuffix(Signum signum, StandardPlural::Form plural,
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FormattedStringBuilder& outString, UErrorCode& status) const {
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if (U_FAILURE(status)) { return 0; }
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// #13453: DecimalFormat wants the affixes from the pattern only (modMiddle, aka pattern modifier).
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// Safe path: use fImmutablePatternModifier.
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const Modifier* modifier = fImmutablePatternModifier->getModifier(signum, plural);
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modifier->apply(outString, 0, 0, status);
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if (U_FAILURE(status)) { return 0; }
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return modifier->getPrefixLength();
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}
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int32_t NumberFormatterImpl::getPrefixSuffixUnsafe(Signum signum, StandardPlural::Form plural,
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FormattedStringBuilder& outString, UErrorCode& status) {
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if (U_FAILURE(status)) { return 0; }
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// #13453: DecimalFormat wants the affixes from the pattern only (modMiddle, aka pattern modifier).
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// Unsafe path: use fPatternModifier.
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fPatternModifier->setNumberProperties(signum, plural);
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fPatternModifier->apply(outString, 0, 0, status);
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if (U_FAILURE(status)) { return 0; }
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return fPatternModifier->getPrefixLength();
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}
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NumberFormatterImpl::NumberFormatterImpl(const MacroProps& macros, bool safe, UErrorCode& status) {
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fMicroPropsGenerator = macrosToMicroGenerator(macros, safe, status);
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}
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//////////
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const MicroPropsGenerator*
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NumberFormatterImpl::macrosToMicroGenerator(const MacroProps& macros, bool safe, UErrorCode& status) {
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if (U_FAILURE(status)) { return nullptr; }
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const MicroPropsGenerator* chain = &fMicros;
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// Check that macros is error-free before continuing.
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if (macros.copyErrorTo(status)) {
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return nullptr;
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}
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// TODO: Accept currency symbols from DecimalFormatSymbols?
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// Pre-compute a few values for efficiency.
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bool isCurrency = utils::unitIsCurrency(macros.unit);
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bool isNoUnit = utils::unitIsNoUnit(macros.unit);
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bool isPercent = utils::unitIsPercent(macros.unit);
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bool isPermille = utils::unitIsPermille(macros.unit);
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bool isAccounting =
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macros.sign == UNUM_SIGN_ACCOUNTING || macros.sign == UNUM_SIGN_ACCOUNTING_ALWAYS ||
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macros.sign == UNUM_SIGN_ACCOUNTING_EXCEPT_ZERO;
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CurrencyUnit currency(u"", status);
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if (isCurrency) {
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currency = CurrencyUnit(macros.unit, status); // Restore CurrencyUnit from MeasureUnit
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}
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const CurrencySymbols* currencySymbols;
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if (macros.currencySymbols != nullptr) {
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// Used by the DecimalFormat code path
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currencySymbols = macros.currencySymbols;
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} else {
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fWarehouse.fCurrencySymbols = {currency, macros.locale, status};
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currencySymbols = &fWarehouse.fCurrencySymbols;
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}
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UNumberUnitWidth unitWidth = UNUM_UNIT_WIDTH_SHORT;
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if (macros.unitWidth != UNUM_UNIT_WIDTH_COUNT) {
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unitWidth = macros.unitWidth;
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}
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bool isCldrUnit = !isCurrency && !isNoUnit &&
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(unitWidth == UNUM_UNIT_WIDTH_FULL_NAME || !(isPercent || isPermille));
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// Select the numbering system.
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LocalPointer<const NumberingSystem> nsLocal;
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const NumberingSystem* ns;
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if (macros.symbols.isNumberingSystem()) {
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ns = macros.symbols.getNumberingSystem();
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} else {
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// TODO: Is there a way to avoid creating the NumberingSystem object?
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ns = NumberingSystem::createInstance(macros.locale, status);
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// Give ownership to the function scope.
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nsLocal.adoptInstead(ns);
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}
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const char* nsName = U_SUCCESS(status) ? ns->getName() : "latn";
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uprv_strncpy(fMicros.nsName, nsName, 8);
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fMicros.nsName[8] = 0; // guarantee NUL-terminated
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// Resolve the symbols. Do this here because currency may need to customize them.
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if (macros.symbols.isDecimalFormatSymbols()) {
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fMicros.symbols = macros.symbols.getDecimalFormatSymbols();
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} else {
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auto newSymbols = new DecimalFormatSymbols(macros.locale, *ns, status);
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if (newSymbols == nullptr) {
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status = U_MEMORY_ALLOCATION_ERROR;
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return nullptr;
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}
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fMicros.symbols = newSymbols;
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// Give ownership to the NumberFormatterImpl.
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fSymbols.adoptInstead(fMicros.symbols);
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}
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// Load and parse the pattern string. It is used for grouping sizes and affixes only.
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// If we are formatting currency, check for a currency-specific pattern.
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const char16_t* pattern = nullptr;
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if (isCurrency) {
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CurrencyFormatInfoResult info = getCurrencyFormatInfo(
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macros.locale, currency.getSubtype(), status);
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if (info.exists) {
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pattern = info.pattern;
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// It's clunky to clone an object here, but this code is not frequently executed.
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auto symbols = new DecimalFormatSymbols(*fMicros.symbols);
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if (symbols == nullptr) {
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status = U_MEMORY_ALLOCATION_ERROR;
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return nullptr;
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}
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fMicros.symbols = symbols;
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fSymbols.adoptInstead(symbols);
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symbols->setSymbol(
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DecimalFormatSymbols::ENumberFormatSymbol::kMonetarySeparatorSymbol,
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UnicodeString(info.decimalSeparator),
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FALSE);
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symbols->setSymbol(
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DecimalFormatSymbols::ENumberFormatSymbol::kMonetaryGroupingSeparatorSymbol,
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UnicodeString(info.groupingSeparator),
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FALSE);
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}
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}
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if (pattern == nullptr) {
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CldrPatternStyle patternStyle;
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if (isCldrUnit) {
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patternStyle = CLDR_PATTERN_STYLE_DECIMAL;
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} else if (isPercent || isPermille) {
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patternStyle = CLDR_PATTERN_STYLE_PERCENT;
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} else if (!isCurrency || unitWidth == UNUM_UNIT_WIDTH_FULL_NAME) {
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patternStyle = CLDR_PATTERN_STYLE_DECIMAL;
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} else if (isAccounting) {
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// NOTE: Although ACCOUNTING and ACCOUNTING_ALWAYS are only supported in currencies right now,
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// the API contract allows us to add support to other units in the future.
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patternStyle = CLDR_PATTERN_STYLE_ACCOUNTING;
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} else {
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patternStyle = CLDR_PATTERN_STYLE_CURRENCY;
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}
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pattern = utils::getPatternForStyle(macros.locale, nsName, patternStyle, status);
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}
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auto patternInfo = new ParsedPatternInfo();
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if (patternInfo == nullptr) {
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status = U_MEMORY_ALLOCATION_ERROR;
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return nullptr;
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}
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fPatternInfo.adoptInstead(patternInfo);
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PatternParser::parseToPatternInfo(UnicodeString(pattern), *patternInfo, status);
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/////////////////////////////////////////////////////////////////////////////////////
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/// START POPULATING THE DEFAULT MICROPROPS AND BUILDING THE MICROPROPS GENERATOR ///
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/////////////////////////////////////////////////////////////////////////////////////
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// Multiplier
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if (macros.scale.isValid()) {
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fMicros.helpers.multiplier.setAndChain(macros.scale, chain);
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chain = &fMicros.helpers.multiplier;
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}
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// Rounding strategy
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Precision precision;
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if (!macros.precision.isBogus()) {
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precision = macros.precision;
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} else if (macros.notation.fType == Notation::NTN_COMPACT) {
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precision = Precision::integer().withMinDigits(2);
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} else if (isCurrency) {
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precision = Precision::currency(UCURR_USAGE_STANDARD);
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} else {
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precision = Precision::maxFraction(6);
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}
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UNumberFormatRoundingMode roundingMode;
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if (macros.roundingMode != kDefaultMode) {
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roundingMode = macros.roundingMode;
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} else {
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// Temporary until ICU 64
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roundingMode = precision.fRoundingMode;
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}
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fMicros.rounder = {precision, roundingMode, currency, status};
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// Grouping strategy
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if (!macros.grouper.isBogus()) {
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fMicros.grouping = macros.grouper;
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} else if (macros.notation.fType == Notation::NTN_COMPACT) {
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// Compact notation uses minGrouping by default since ICU 59
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fMicros.grouping = Grouper::forStrategy(UNUM_GROUPING_MIN2);
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} else {
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fMicros.grouping = Grouper::forStrategy(UNUM_GROUPING_AUTO);
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}
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fMicros.grouping.setLocaleData(*fPatternInfo, macros.locale);
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// Padding strategy
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if (!macros.padder.isBogus()) {
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fMicros.padding = macros.padder;
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} else {
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fMicros.padding = Padder::none();
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}
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// Integer width
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if (!macros.integerWidth.isBogus()) {
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fMicros.integerWidth = macros.integerWidth;
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} else {
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fMicros.integerWidth = IntegerWidth::standard();
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}
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// Sign display
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if (macros.sign != UNUM_SIGN_COUNT) {
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fMicros.sign = macros.sign;
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} else {
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fMicros.sign = UNUM_SIGN_AUTO;
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}
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// Decimal mark display
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if (macros.decimal != UNUM_DECIMAL_SEPARATOR_COUNT) {
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fMicros.decimal = macros.decimal;
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} else {
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fMicros.decimal = UNUM_DECIMAL_SEPARATOR_AUTO;
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}
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// Use monetary separator symbols
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fMicros.useCurrency = isCurrency;
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// Inner modifier (scientific notation)
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if (macros.notation.fType == Notation::NTN_SCIENTIFIC) {
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auto newScientificHandler = new ScientificHandler(¯os.notation, fMicros.symbols, chain);
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if (newScientificHandler == nullptr) {
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status = U_MEMORY_ALLOCATION_ERROR;
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return nullptr;
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}
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fScientificHandler.adoptInstead(newScientificHandler);
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chain = fScientificHandler.getAlias();
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} else {
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// No inner modifier required
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fMicros.modInner = &fMicros.helpers.emptyStrongModifier;
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}
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// Middle modifier (patterns, positive/negative, currency symbols, percent)
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auto patternModifier = new MutablePatternModifier(false);
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if (patternModifier == nullptr) {
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status = U_MEMORY_ALLOCATION_ERROR;
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return nullptr;
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}
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fPatternModifier.adoptInstead(patternModifier);
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patternModifier->setPatternInfo(
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macros.affixProvider != nullptr ? macros.affixProvider
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: static_cast<const AffixPatternProvider*>(fPatternInfo.getAlias()),
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UNUM_FIELD_COUNT);
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patternModifier->setPatternAttributes(fMicros.sign, isPermille);
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if (patternModifier->needsPlurals()) {
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patternModifier->setSymbols(
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fMicros.symbols,
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currencySymbols,
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unitWidth,
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resolvePluralRules(macros.rules, macros.locale, status));
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} else {
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patternModifier->setSymbols(fMicros.symbols, currencySymbols, unitWidth, nullptr);
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}
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if (safe) {
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fImmutablePatternModifier.adoptInstead(patternModifier->createImmutable(status));
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}
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// Outer modifier (CLDR units and currency long names)
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if (isCldrUnit) {
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fLongNameHandler.adoptInstead(
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LongNameHandler::forMeasureUnit(
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macros.locale,
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macros.unit,
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macros.perUnit,
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unitWidth,
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resolvePluralRules(macros.rules, macros.locale, status),
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chain,
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status));
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chain = fLongNameHandler.getAlias();
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} else if (isCurrency && unitWidth == UNUM_UNIT_WIDTH_FULL_NAME) {
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fLongNameHandler.adoptInstead(
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LongNameHandler::forCurrencyLongNames(
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macros.locale,
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currency,
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resolvePluralRules(macros.rules, macros.locale, status),
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chain,
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status));
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chain = fLongNameHandler.getAlias();
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} else {
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// No outer modifier required
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fMicros.modOuter = &fMicros.helpers.emptyWeakModifier;
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}
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// Compact notation
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if (macros.notation.fType == Notation::NTN_COMPACT) {
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CompactType compactType = (isCurrency && unitWidth != UNUM_UNIT_WIDTH_FULL_NAME)
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? CompactType::TYPE_CURRENCY : CompactType::TYPE_DECIMAL;
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auto newCompactHandler = new CompactHandler(
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macros.notation.fUnion.compactStyle,
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macros.locale,
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nsName,
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compactType,
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resolvePluralRules(macros.rules, macros.locale, status),
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patternModifier,
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safe,
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chain,
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status);
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if (newCompactHandler == nullptr) {
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status = U_MEMORY_ALLOCATION_ERROR;
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return nullptr;
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}
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fCompactHandler.adoptInstead(newCompactHandler);
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chain = fCompactHandler.getAlias();
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}
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// Always add the pattern modifier as the last element of the chain.
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if (safe) {
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fImmutablePatternModifier->addToChain(chain);
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chain = fImmutablePatternModifier.getAlias();
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} else {
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patternModifier->addToChain(chain);
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chain = patternModifier;
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}
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return chain;
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}
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const PluralRules*
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NumberFormatterImpl::resolvePluralRules(const PluralRules* rulesPtr, const Locale& locale,
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UErrorCode& status) {
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if (rulesPtr != nullptr) {
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return rulesPtr;
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}
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// Lazily create PluralRules
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if (fRules.isNull()) {
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fRules.adoptInstead(PluralRules::forLocale(locale, status));
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}
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return fRules.getAlias();
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}
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int32_t NumberFormatterImpl::writeAffixes(const MicroProps& micros, FormattedStringBuilder& string,
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int32_t start, int32_t end, UErrorCode& status) {
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// Always apply the inner modifier (which is "strong").
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int32_t length = micros.modInner->apply(string, start, end, status);
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if (micros.padding.isValid()) {
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length += micros.padding
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.padAndApply(*micros.modMiddle, *micros.modOuter, string, start, length + end, status);
|
|
} else {
|
|
length += micros.modMiddle->apply(string, start, length + end, status);
|
|
length += micros.modOuter->apply(string, start, length + end, status);
|
|
}
|
|
return length;
|
|
}
|
|
|
|
int32_t NumberFormatterImpl::writeNumber(const MicroProps& micros, DecimalQuantity& quantity,
|
|
FormattedStringBuilder& string, int32_t index,
|
|
UErrorCode& status) {
|
|
int32_t length = 0;
|
|
if (quantity.isInfinite()) {
|
|
length += string.insert(
|
|
length + index,
|
|
micros.symbols->getSymbol(DecimalFormatSymbols::ENumberFormatSymbol::kInfinitySymbol),
|
|
UNUM_INTEGER_FIELD,
|
|
status);
|
|
|
|
} else if (quantity.isNaN()) {
|
|
length += string.insert(
|
|
length + index,
|
|
micros.symbols->getSymbol(DecimalFormatSymbols::ENumberFormatSymbol::kNaNSymbol),
|
|
UNUM_INTEGER_FIELD,
|
|
status);
|
|
|
|
} else {
|
|
// Add the integer digits
|
|
length += writeIntegerDigits(micros, quantity, string, length + index, status);
|
|
|
|
// Add the decimal point
|
|
if (quantity.getLowerDisplayMagnitude() < 0 || micros.decimal == UNUM_DECIMAL_SEPARATOR_ALWAYS) {
|
|
length += string.insert(
|
|
length + index,
|
|
micros.useCurrency ? micros.symbols->getSymbol(
|
|
DecimalFormatSymbols::ENumberFormatSymbol::kMonetarySeparatorSymbol) : micros
|
|
.symbols
|
|
->getSymbol(
|
|
DecimalFormatSymbols::ENumberFormatSymbol::kDecimalSeparatorSymbol),
|
|
UNUM_DECIMAL_SEPARATOR_FIELD,
|
|
status);
|
|
}
|
|
|
|
// Add the fraction digits
|
|
length += writeFractionDigits(micros, quantity, string, length + index, status);
|
|
|
|
if (length == 0) {
|
|
// Force output of the digit for value 0
|
|
length += utils::insertDigitFromSymbols(
|
|
string, index, 0, *micros.symbols, UNUM_INTEGER_FIELD, status);
|
|
}
|
|
}
|
|
|
|
return length;
|
|
}
|
|
|
|
int32_t NumberFormatterImpl::writeIntegerDigits(const MicroProps& micros, DecimalQuantity& quantity,
|
|
FormattedStringBuilder& string, int32_t index,
|
|
UErrorCode& status) {
|
|
int length = 0;
|
|
int integerCount = quantity.getUpperDisplayMagnitude() + 1;
|
|
for (int i = 0; i < integerCount; i++) {
|
|
// Add grouping separator
|
|
if (micros.grouping.groupAtPosition(i, quantity)) {
|
|
length += string.insert(
|
|
index,
|
|
micros.useCurrency ? micros.symbols->getSymbol(
|
|
DecimalFormatSymbols::ENumberFormatSymbol::kMonetaryGroupingSeparatorSymbol)
|
|
: micros.symbols->getSymbol(
|
|
DecimalFormatSymbols::ENumberFormatSymbol::kGroupingSeparatorSymbol),
|
|
UNUM_GROUPING_SEPARATOR_FIELD,
|
|
status);
|
|
}
|
|
|
|
// Get and append the next digit value
|
|
int8_t nextDigit = quantity.getDigit(i);
|
|
length += utils::insertDigitFromSymbols(
|
|
string, index, nextDigit, *micros.symbols, UNUM_INTEGER_FIELD, status);
|
|
}
|
|
return length;
|
|
}
|
|
|
|
int32_t NumberFormatterImpl::writeFractionDigits(const MicroProps& micros, DecimalQuantity& quantity,
|
|
FormattedStringBuilder& string, int32_t index,
|
|
UErrorCode& status) {
|
|
int length = 0;
|
|
int fractionCount = -quantity.getLowerDisplayMagnitude();
|
|
for (int i = 0; i < fractionCount; i++) {
|
|
// Get and append the next digit value
|
|
int8_t nextDigit = quantity.getDigit(-i - 1);
|
|
length += utils::insertDigitFromSymbols(
|
|
string, length + index, nextDigit, *micros.symbols, UNUM_FRACTION_FIELD, status);
|
|
}
|
|
return length;
|
|
}
|
|
|
|
#endif /* #if !UCONFIG_NO_FORMATTING */
|