1 files changed, 350 insertions, 0 deletions
diff --git a/intl/icu/source/i18n/number_longnames.cpp b/intl/icu/source/i18n/number_longnames.cpp
new file mode 100644
index 0000000000..bb32d0381a
--- /dev/null
+++ b/intl/icu/source/i18n/number_longnames.cpp
@@ -0,0 +1,350 @@
+// © 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 "unicode/simpleformatter.h"
+#include "unicode/ures.h"
+#include "ureslocs.h"
+#include "charstr.h"
+#include "uresimp.h"
+#include "number_longnames.h"
+#include "number_microprops.h"
+#include <algorithm>
+#include "cstring.h"
+#include "util.h"
+
+using namespace icu;
+using namespace icu::number;
+using namespace icu::number::impl;
+
+namespace {
+
+constexpr int32_t DNAM_INDEX = StandardPlural::Form::COUNT;
+constexpr int32_t PER_INDEX = StandardPlural::Form::COUNT + 1;
+constexpr int32_t ARRAY_LENGTH = StandardPlural::Form::COUNT + 2;
+
+static int32_t getIndex(const char* pluralKeyword, UErrorCode& status) {
+    // pluralKeyword can also be "dnam" or "per"
+    if (uprv_strcmp(pluralKeyword, "dnam") == 0) {
+        return DNAM_INDEX;
+    } else if (uprv_strcmp(pluralKeyword, "per") == 0) {
+        return PER_INDEX;
+    } else {
+        StandardPlural::Form plural = StandardPlural::fromString(pluralKeyword, status);
+        return plural;
+    }
+}
+
+static UnicodeString getWithPlural(
+        const UnicodeString* strings,
+        StandardPlural::Form plural,
+        UErrorCode& status) {
+    UnicodeString result = strings[plural];
+    if (result.isBogus()) {
+        result = strings[StandardPlural::Form::OTHER];
+    }
+    if (result.isBogus()) {
+        // There should always be data in the "other" plural variant.
+        status = U_INTERNAL_PROGRAM_ERROR;
+    }
+    return result;
+}
+
+
+//////////////////////////
+/// BEGIN DATA LOADING ///
+//////////////////////////
+
+class PluralTableSink : public ResourceSink {
+  public:
+    explicit PluralTableSink(UnicodeString *outArray) : outArray(outArray) {
+        // Initialize the array to bogus strings.
+        for (int32_t i = 0; i < ARRAY_LENGTH; i++) {
+            outArray[i].setToBogus();
+        }
+    }
+
+    void put(const char *key, ResourceValue &value, UBool /*noFallback*/, UErrorCode &status) U_OVERRIDE {
+        ResourceTable pluralsTable = value.getTable(status);
+        if (U_FAILURE(status)) { return; }
+        for (int32_t i = 0; pluralsTable.getKeyAndValue(i, key, value); ++i) {
+            int32_t index = getIndex(key, status);
+            if (U_FAILURE(status)) { return; }
+            if (!outArray[index].isBogus()) {
+                continue;
+            }
+            outArray[index] = value.getUnicodeString(status);
+            if (U_FAILURE(status)) { return; }
+        }
+    }
+
+  private:
+    UnicodeString *outArray;
+};
+
+// NOTE: outArray MUST have room for all StandardPlural values.  No bounds checking is performed.
+
+void getMeasureData(const Locale &locale, const MeasureUnit &unit, const UNumberUnitWidth &width,
+                    UnicodeString *outArray, UErrorCode &status) {
+    PluralTableSink sink(outArray);
+    LocalUResourceBundlePointer unitsBundle(ures_open(U_ICUDATA_UNIT, locale.getName(), &status));
+    if (U_FAILURE(status)) { return; }
+
+    // Map duration-year-person, duration-week-person, etc. to duration-year, duration-week, ...
+    // TODO(ICU-20400): Get duration-*-person data properly with aliases.
+    StringPiece subtypeForResource;
+    int32_t subtypeLen = static_cast<int32_t>(uprv_strlen(unit.getSubtype()));
+    if (subtypeLen > 7 && uprv_strcmp(unit.getSubtype() + subtypeLen - 7, "-person") == 0) {
+        subtypeForResource = {unit.getSubtype(), subtypeLen - 7};
+    } else {
+        subtypeForResource = unit.getSubtype();
+    }
+
+    CharString key;
+    key.append("units", status);
+    if (width == UNUM_UNIT_WIDTH_NARROW) {
+        key.append("Narrow", status);
+    } else if (width == UNUM_UNIT_WIDTH_SHORT) {
+        key.append("Short", status);
+    }
+    key.append("/", status);
+    key.append(unit.getType(), status);
+    key.append("/", status);
+    key.append(subtypeForResource, status);
+
+    UErrorCode localStatus = U_ZERO_ERROR;
+    ures_getAllItemsWithFallback(unitsBundle.getAlias(), key.data(), sink, localStatus);
+    if (width == UNUM_UNIT_WIDTH_SHORT) {
+        if (U_FAILURE(localStatus)) {
+            status = localStatus;
+        }
+        return;
+    }
+
+    // TODO(ICU-13353): The fallback to short does not work in ICU4C.
+    // Manually fall back to short (this is done automatically in Java).
+    key.clear();
+    key.append("unitsShort/", status);
+    key.append(unit.getType(), status);
+    key.append("/", status);
+    key.append(subtypeForResource, status);
+    ures_getAllItemsWithFallback(unitsBundle.getAlias(), key.data(), sink, status);
+}
+
+void getCurrencyLongNameData(const Locale &locale, const CurrencyUnit &currency, UnicodeString *outArray,
+                             UErrorCode &status) {
+    // In ICU4J, this method gets a CurrencyData from CurrencyData.provider.
+    // TODO(ICU4J): Implement this without going through CurrencyData, like in ICU4C?
+    PluralTableSink sink(outArray);
+    LocalUResourceBundlePointer unitsBundle(ures_open(U_ICUDATA_CURR, locale.getName(), &status));
+    if (U_FAILURE(status)) { return; }
+    ures_getAllItemsWithFallback(unitsBundle.getAlias(), "CurrencyUnitPatterns", sink, status);
+    if (U_FAILURE(status)) { return; }
+    for (int32_t i = 0; i < StandardPlural::Form::COUNT; i++) {
+        UnicodeString &pattern = outArray[i];
+        if (pattern.isBogus()) {
+            continue;
+        }
+        int32_t longNameLen = 0;
+        const char16_t *longName = ucurr_getPluralName(
+                currency.getISOCurrency(),
+                locale.getName(),
+                nullptr /* isChoiceFormat */,
+                StandardPlural::getKeyword(static_cast<StandardPlural::Form>(i)),
+                &longNameLen,
+                &status);
+        // Example pattern from data: "{0} {1}"
+        // Example output after find-and-replace: "{0} US dollars"
+        pattern.findAndReplace(UnicodeString(u"{1}"), UnicodeString(longName, longNameLen));
+    }
+}
+
+UnicodeString getPerUnitFormat(const Locale& locale, const UNumberUnitWidth &width, UErrorCode& status) {
+    LocalUResourceBundlePointer unitsBundle(ures_open(U_ICUDATA_UNIT, locale.getName(), &status));
+    if (U_FAILURE(status)) { return {}; }
+    CharString key;
+    key.append("units", status);
+    if (width == UNUM_UNIT_WIDTH_NARROW) {
+        key.append("Narrow", status);
+    } else if (width == UNUM_UNIT_WIDTH_SHORT) {
+        key.append("Short", status);
+    }
+    key.append("/compound/per", status);
+    int32_t len = 0;
+    const UChar* ptr = ures_getStringByKeyWithFallback(unitsBundle.getAlias(), key.data(), &len, &status);
+    return UnicodeString(ptr, len);
+}
+
+////////////////////////
+/// END DATA LOADING ///
+////////////////////////
+
+} // namespace
+
+LongNameHandler*
+LongNameHandler::forMeasureUnit(const Locale &loc, const MeasureUnit &unitRef, const MeasureUnit &perUnit,
+                                const UNumberUnitWidth &width, const PluralRules *rules,
+                                const MicroPropsGenerator *parent, UErrorCode &status) {
+    if (uprv_strlen(unitRef.getType()) == 0 || uprv_strlen(perUnit.getType()) == 0) {
+        // TODO(ICU-20941): Unsanctioned unit. Not yet fully supported. Set an error code.
+        status = U_UNSUPPORTED_ERROR;
+        return nullptr;
+    }
+
+    MeasureUnit unit = unitRef;
+    if (uprv_strcmp(perUnit.getType(), "none") != 0) {
+        // Compound unit: first try to simplify (e.g., meters per second is its own unit).
+        bool isResolved = false;
+        MeasureUnit resolved = MeasureUnit::resolveUnitPerUnit(unit, perUnit, &isResolved);
+        if (isResolved) {
+            unit = resolved;
+        } else {
+            // No simplified form is available.
+            return forCompoundUnit(loc, unit, perUnit, width, rules, parent, status);
+        }
+    }
+
+    auto* result = new LongNameHandler(rules, parent);
+    if (result == nullptr) {
+        status = U_MEMORY_ALLOCATION_ERROR;
+        return nullptr;
+    }
+    UnicodeString simpleFormats[ARRAY_LENGTH];
+    getMeasureData(loc, unit, width, simpleFormats, status);
+    if (U_FAILURE(status)) { return result; }
+    result->simpleFormatsToModifiers(simpleFormats, {UFIELD_CATEGORY_NUMBER, UNUM_MEASURE_UNIT_FIELD}, status);
+    return result;
+}
+
+LongNameHandler*
+LongNameHandler::forCompoundUnit(const Locale &loc, const MeasureUnit &unit, const MeasureUnit &perUnit,
+                                 const UNumberUnitWidth &width, const PluralRules *rules,
+                                 const MicroPropsGenerator *parent, UErrorCode &status) {
+    auto* result = new LongNameHandler(rules, parent);
+    if (result == nullptr) {
+        status = U_MEMORY_ALLOCATION_ERROR;
+        return nullptr;
+    }
+    UnicodeString primaryData[ARRAY_LENGTH];
+    getMeasureData(loc, unit, width, primaryData, status);
+    if (U_FAILURE(status)) { return result; }
+    UnicodeString secondaryData[ARRAY_LENGTH];
+    getMeasureData(loc, perUnit, width, secondaryData, status);
+    if (U_FAILURE(status)) { return result; }
+
+    UnicodeString perUnitFormat;
+    if (!secondaryData[PER_INDEX].isBogus()) {
+        perUnitFormat = secondaryData[PER_INDEX];
+    } else {
+        UnicodeString rawPerUnitFormat = getPerUnitFormat(loc, width, status);
+        if (U_FAILURE(status)) { return result; }
+        // rawPerUnitFormat is something like "{0}/{1}"; we need to substitute in the secondary unit.
+        SimpleFormatter compiled(rawPerUnitFormat, 2, 2, status);
+        if (U_FAILURE(status)) { return result; }
+        UnicodeString secondaryFormat = getWithPlural(secondaryData, StandardPlural::Form::ONE, status);
+        if (U_FAILURE(status)) { return result; }
+        // Some "one" pattern may not contain "{0}". For example in "ar" or "ne" locale.
+        SimpleFormatter secondaryCompiled(secondaryFormat, 0, 1, status);
+        if (U_FAILURE(status)) { return result; }
+        UnicodeString secondaryString = secondaryCompiled.getTextWithNoArguments().trim();
+        // TODO: Why does UnicodeString need to be explicit in the following line?
+        compiled.format(UnicodeString(u"{0}"), secondaryString, perUnitFormat, status);
+        if (U_FAILURE(status)) { return result; }
+    }
+    result->multiSimpleFormatsToModifiers(primaryData, perUnitFormat, {UFIELD_CATEGORY_NUMBER, UNUM_MEASURE_UNIT_FIELD}, status);
+    return result;
+}
+
+UnicodeString LongNameHandler::getUnitDisplayName(
+        const Locale& loc,
+        const MeasureUnit& unit,
+        UNumberUnitWidth width,
+        UErrorCode& status) {
+    if (U_FAILURE(status)) {
+        return ICU_Utility::makeBogusString();
+    }
+    UnicodeString simpleFormats[ARRAY_LENGTH];
+    getMeasureData(loc, unit, width, simpleFormats, status);
+    return simpleFormats[DNAM_INDEX];
+}
+
+UnicodeString LongNameHandler::getUnitPattern(
+        const Locale& loc,
+        const MeasureUnit& unit,
+        UNumberUnitWidth width,
+        StandardPlural::Form pluralForm,
+        UErrorCode& status) {
+    if (U_FAILURE(status)) {
+        return ICU_Utility::makeBogusString();
+    }
+    UnicodeString simpleFormats[ARRAY_LENGTH];
+    getMeasureData(loc, unit, width, simpleFormats, status);
+    // The above already handles fallback from other widths to short
+    if (U_FAILURE(status)) {
+        return ICU_Utility::makeBogusString();
+    }
+    // Now handle fallback from other plural forms to OTHER
+    return (!(simpleFormats[pluralForm]).isBogus())? simpleFormats[pluralForm]:
+            simpleFormats[StandardPlural::Form::OTHER];
+}
+
+LongNameHandler* LongNameHandler::forCurrencyLongNames(const Locale &loc, const CurrencyUnit &currency,
+                                                      const PluralRules *rules,
+                                                      const MicroPropsGenerator *parent,
+                                                      UErrorCode &status) {
+    auto* result = new LongNameHandler(rules, parent);
+    if (result == nullptr) {
+        status = U_MEMORY_ALLOCATION_ERROR;
+        return nullptr;
+    }
+    UnicodeString simpleFormats[ARRAY_LENGTH];
+    getCurrencyLongNameData(loc, currency, simpleFormats, status);
+    if (U_FAILURE(status)) { return nullptr; }
+    result->simpleFormatsToModifiers(simpleFormats, {UFIELD_CATEGORY_NUMBER, UNUM_CURRENCY_FIELD}, status);
+    return result;
+}
+
+void LongNameHandler::simpleFormatsToModifiers(const UnicodeString *simpleFormats, Field field,
+                                               UErrorCode &status) {
+    for (int32_t i = 0; i < StandardPlural::Form::COUNT; i++) {
+        StandardPlural::Form plural = static_cast<StandardPlural::Form>(i);
+        UnicodeString simpleFormat = getWithPlural(simpleFormats, plural, status);
+        if (U_FAILURE(status)) { return; }
+        SimpleFormatter compiledFormatter(simpleFormat, 0, 1, status);
+        if (U_FAILURE(status)) { return; }
+        fModifiers[i] = SimpleModifier(compiledFormatter, field, false, {this, SIGNUM_POS_ZERO, plural});
+    }
+}
+
+void LongNameHandler::multiSimpleFormatsToModifiers(const UnicodeString *leadFormats, UnicodeString trailFormat,
+                                                    Field field, UErrorCode &status) {
+    SimpleFormatter trailCompiled(trailFormat, 1, 1, status);
+    if (U_FAILURE(status)) { return; }
+    for (int32_t i = 0; i < StandardPlural::Form::COUNT; i++) {
+        StandardPlural::Form plural = static_cast<StandardPlural::Form>(i);
+        UnicodeString leadFormat = getWithPlural(leadFormats, plural, status);
+        if (U_FAILURE(status)) { return; }
+        UnicodeString compoundFormat;
+        trailCompiled.format(leadFormat, compoundFormat, status);
+        if (U_FAILURE(status)) { return; }
+        SimpleFormatter compoundCompiled(compoundFormat, 0, 1, status);
+        if (U_FAILURE(status)) { return; }
+        fModifiers[i] = SimpleModifier(compoundCompiled, field, false, {this, SIGNUM_POS_ZERO, plural});
+    }
+}
+
+void LongNameHandler::processQuantity(DecimalQuantity &quantity, MicroProps &micros,
+                                      UErrorCode &status) const {
+    parent->processQuantity(quantity, micros, status);
+    StandardPlural::Form pluralForm = utils::getPluralSafe(micros.rounder, rules, quantity, status);
+    micros.modOuter = &fModifiers[pluralForm];
+}
+
+const Modifier* LongNameHandler::getModifier(Signum /*signum*/, StandardPlural::Form plural) const {
+    return &fModifiers[plural];
+}
+
+#endif /* #if !UCONFIG_NO_FORMATTING */