AuroraMiddleware/scuffed-code
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity
e56b19662c
scuffed-code/icu4c/source/i18n/number_formatimpl.cpp
Shane Carr 6daab85db4 ICU-20429 Renaming [Number->Formatted]StringBuilder and refactoring. 
- StringSegment, ICU4C:
  * Moved to top icu namespace
  * Compilation unit renamed to string_segment.
- NumberStringBuilder, C and J:
  * Moved to main icu namespace
  * Compilation unit renamed to formatted_string_builder
  * Renamed class to FormattedStringBuilder
- Moves nextPosition logic of NumberStringBuilder to helper class
2019-04-05 20:08:07 -05:00

530 lines
22 KiB
C++
Raw Blame History

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