-/*
-*******************************************************************************
-* Copyright (C) 1997-2012, International Business Machines Corporation and *
-* others. All Rights Reserved. *
-*******************************************************************************
-*
-* File COMPACTDECIMALFORMAT.CPP
-*
-********************************************************************************
-*/
+// © 2018 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 "charstr.h"
-#include "cstring.h"
-#include "digitlst.h"
-#include "mutex.h"
-#include "unicode/compactdecimalformat.h"
-#include "unicode/numsys.h"
-#include "unicode/plurrule.h"
-#include "unicode/ures.h"
-#include "ucln_in.h"
-#include "uhash.h"
-#include "umutex.h"
-#include "unicode/ures.h"
-#include "uresimp.h"
-
-#define LENGTHOF(array) (int32_t)(sizeof(array) / sizeof((array)[0]))
-
-// Maps locale name to CDFLocaleData struct.
-static UHashtable* gCompactDecimalData = NULL;
-static UMutex gCompactDecimalMetaLock = U_MUTEX_INITIALIZER;
-
-U_NAMESPACE_BEGIN
-
-static const int32_t MAX_DIGITS = 15;
-static const char gOther[] = "other";
-static const char gLatnTag[] = "latn";
-static const char gNumberElementsTag[] = "NumberElements";
-static const char gDecimalFormatTag[] = "decimalFormat";
-static const char gPatternsShort[] = "patternsShort";
-static const char gPatternsLong[] = "patternsLong";
-static const char gRoot[] = "root";
-
-static const UChar u_0 = 0x30;
-static const UChar u_apos = 0x27;
-
-static const UChar kZero[] = {u_0};
-
-// Used to unescape single quotes.
-enum QuoteState {
- OUTSIDE,
- INSIDE_EMPTY,
- INSIDE_FULL
-};
-
-enum FallbackFlags {
- ANY = 0,
- MUST = 1,
- NOT_ROOT = 2
- // Next one will be 4 then 6 etc.
-};
-
-
-// CDFUnit represents a prefix-suffix pair for a particular variant
-// and log10 value.
-struct CDFUnit : public UMemory {
- UnicodeString prefix;
- UnicodeString suffix;
- inline CDFUnit() : prefix(), suffix() {
- prefix.setToBogus();
- }
- inline ~CDFUnit() {}
- inline UBool isSet() const {
- return !prefix.isBogus();
- }
- inline void markAsSet() {
- prefix.remove();
- }
-};
-
-// CDFLocaleStyleData contains formatting data for a particular locale
-// and style.
-class CDFLocaleStyleData : public UMemory {
- public:
- // What to divide by for each log10 value when formatting. These values
- // will be powers of 10. For English, would be:
- // 1, 1, 1, 1000, 1000, 1000, 1000000, 1000000, 1000000, 1000000000 ...
- double divisors[MAX_DIGITS];
- // Maps plural variants to CDFUnit[MAX_DIGITS] arrays.
- // To format a number x,
- // first compute log10(x). Compute displayNum = (x / divisors[log10(x)]).
- // Compute the plural variant for displayNum
- // (e.g zero, one, two, few, many, other).
- // Compute cdfUnits = unitsByVariant[pluralVariant].
- // Prefix and suffix to use at cdfUnits[log10(x)]
- UHashtable* unitsByVariant;
- inline CDFLocaleStyleData() : unitsByVariant(NULL) {}
- ~CDFLocaleStyleData();
- // Init initializes this object.
- void Init(UErrorCode& status);
- inline UBool isBogus() const {
- return unitsByVariant == NULL;
- }
- void setToBogus();
- private:
- CDFLocaleStyleData(const CDFLocaleStyleData&);
- CDFLocaleStyleData& operator=(const CDFLocaleStyleData&);
-};
+// Allow implicit conversion from char16_t* to UnicodeString for this file:
+// Helpful in toString methods and elsewhere.
+#define UNISTR_FROM_STRING_EXPLICIT
-// CDFLocaleData contains formatting data for a particular locale.
-struct CDFLocaleData : public UMemory {
- CDFLocaleStyleData shortData;
- CDFLocaleStyleData longData;
- inline CDFLocaleData() : shortData(), longData() { }
- inline ~CDFLocaleData() { }
- // Init initializes this object.
- void Init(UErrorCode& status);
-};
-
-U_NAMESPACE_END
-
-U_CDECL_BEGIN
-
-static UBool U_CALLCONV cdf_cleanup(void) {
- if (gCompactDecimalData != NULL) {
- uhash_close(gCompactDecimalData);
- gCompactDecimalData = NULL;
- }
- return TRUE;
-}
-
-static void U_CALLCONV deleteCDFUnits(void* ptr) {
- delete [] (icu::CDFUnit*) ptr;
-}
-
-static void U_CALLCONV deleteCDFLocaleData(void* ptr) {
- delete (icu::CDFLocaleData*) ptr;
-}
-
-U_CDECL_END
-
-U_NAMESPACE_BEGIN
+#include "unicode/compactdecimalformat.h"
+#include "number_mapper.h"
+#include "number_decimfmtprops.h"
-static UBool divisors_equal(const double* lhs, const double* rhs);
-static const CDFLocaleStyleData* getCDFLocaleStyleData(const Locale& inLocale, UNumberCompactStyle style, UErrorCode& status);
+using namespace icu;
-static const CDFLocaleStyleData* extractDataByStyleEnum(const CDFLocaleData& data, UNumberCompactStyle style, UErrorCode& status);
-static CDFLocaleData* loadCDFLocaleData(const Locale& inLocale, UErrorCode& status);
-static void initCDFLocaleData(const Locale& inLocale, CDFLocaleData* result, UErrorCode& status);
-static UResourceBundle* tryGetDecimalFallback(const UResourceBundle* numberSystemResource, const char* style, UResourceBundle** fillIn, FallbackFlags flags, UErrorCode& status);
-static UResourceBundle* tryGetByKeyWithFallback(const UResourceBundle* rb, const char* path, UResourceBundle** fillIn, FallbackFlags flags, UErrorCode& status);
-static UBool isRoot(const UResourceBundle* rb, UErrorCode& status);
-static void initCDFLocaleStyleData(const UResourceBundle* decimalFormatBundle, CDFLocaleStyleData* result, UErrorCode& status);
-static void populatePower10(const UResourceBundle* power10Bundle, CDFLocaleStyleData* result, UErrorCode& status);
-static int32_t populatePrefixSuffix(const char* variant, int32_t log10Value, const UnicodeString& formatStr, UHashtable* result, UErrorCode& status);
-static UBool onlySpaces(UnicodeString u);
-static void fixQuotes(UnicodeString& s);
-static void fillInMissing(CDFLocaleStyleData* result);
-static int32_t computeLog10(double x, UBool inRange);
-static CDFUnit* createCDFUnit(const char* variant, int32_t log10Value, UHashtable* table, UErrorCode& status);
-static const CDFUnit* getCDFUnitFallback(const UHashtable* table, const UnicodeString& variant, int32_t log10Value);
UOBJECT_DEFINE_RTTI_IMPLEMENTATION(CompactDecimalFormat)
-CompactDecimalFormat::CompactDecimalFormat(
- const DecimalFormat& decimalFormat,
- const UHashtable* unitsByVariant,
- const double* divisors,
- PluralRules* pluralRules)
- : DecimalFormat(decimalFormat), _unitsByVariant(unitsByVariant), _divisors(divisors), _pluralRules(pluralRules) {
-}
-CompactDecimalFormat::CompactDecimalFormat(const CompactDecimalFormat& source)
- : DecimalFormat(source), _unitsByVariant(source._unitsByVariant), _divisors(source._divisors), _pluralRules(source._pluralRules->clone()) {
+CompactDecimalFormat*
+CompactDecimalFormat::createInstance(const Locale& inLocale, UNumberCompactStyle style,
+ UErrorCode& status) {
+ return new CompactDecimalFormat(inLocale, style, status);
}
-CompactDecimalFormat* U_EXPORT2
-CompactDecimalFormat::createInstance(
- const Locale& inLocale, UNumberCompactStyle style, UErrorCode& status) {
- LocalPointer<DecimalFormat> decfmt((DecimalFormat*) NumberFormat::makeInstance(inLocale, UNUM_DECIMAL, TRUE, status));
- if (U_FAILURE(status)) {
- return NULL;
- }
- LocalPointer<PluralRules> pluralRules(PluralRules::forLocale(inLocale, status));
- if (U_FAILURE(status)) {
- return NULL;
- }
- const CDFLocaleStyleData* data = getCDFLocaleStyleData(inLocale, style, status);
- if (U_FAILURE(status)) {
- return NULL;
- }
- CompactDecimalFormat* result =
- new CompactDecimalFormat(*decfmt, data->unitsByVariant, data->divisors, pluralRules.getAlias());
- if (result == NULL) {
- status = U_MEMORY_ALLOCATION_ERROR;
- return NULL;
- }
- pluralRules.orphan();
- result->setMaximumSignificantDigits(3);
- result->setSignificantDigitsUsed(TRUE);
- result->setGroupingUsed(FALSE);
- return result;
+CompactDecimalFormat::CompactDecimalFormat(const Locale& inLocale, UNumberCompactStyle style,
+ UErrorCode& status)
+ : DecimalFormat(new DecimalFormatSymbols(inLocale, status), status) {
+ if (U_FAILURE(status)) return;
+ // Minimal properties: let the non-shim code path do most of the logic for us.
+ fields->properties->compactStyle = style;
+ fields->properties->groupingSize = -2; // do not forward grouping information
+ fields->properties->minimumGroupingDigits = 2;
+ touch(status);
}
-CompactDecimalFormat&
-CompactDecimalFormat::operator=(const CompactDecimalFormat& rhs) {
- if (this != &rhs) {
- DecimalFormat::operator=(rhs);
- _unitsByVariant = rhs._unitsByVariant;
- _divisors = rhs._divisors;
- delete _pluralRules;
- _pluralRules = rhs._pluralRules->clone();
- }
- return *this;
-}
-
-CompactDecimalFormat::~CompactDecimalFormat() {
- delete _pluralRules;
-}
-
-
-Format*
-CompactDecimalFormat::clone(void) const {
- return new CompactDecimalFormat(*this);
-}
-
-UBool
-CompactDecimalFormat::operator==(const Format& that) const {
- if (this == &that) {
- return TRUE;
- }
- return (DecimalFormat::operator==(that) && eqHelper((const CompactDecimalFormat&) that));
-}
-
-UBool
-CompactDecimalFormat::eqHelper(const CompactDecimalFormat& that) const {
- return uhash_equals(_unitsByVariant, that._unitsByVariant) && divisors_equal(_divisors, that._divisors) && (*_pluralRules == *that._pluralRules);
-}
-
-UnicodeString&
-CompactDecimalFormat::format(
- double number,
- UnicodeString& appendTo,
- FieldPosition& pos) const {
- DigitList orig, rounded;
- orig.set(number);
- UBool isNegative;
- UErrorCode status = U_ZERO_ERROR;
- _round(orig, rounded, isNegative, status);
- if (U_FAILURE(status)) {
- return appendTo;
- }
- double roundedDouble = rounded.getDouble();
- if (isNegative) {
- roundedDouble = -roundedDouble;
- }
- int32_t baseIdx = computeLog10(roundedDouble, TRUE);
- double numberToFormat = roundedDouble / _divisors[baseIdx];
- UnicodeString variant = _pluralRules->select(numberToFormat);
- if (isNegative) {
- numberToFormat = -numberToFormat;
- }
- const CDFUnit* unit = getCDFUnitFallback(_unitsByVariant, variant, baseIdx);
- appendTo += unit->prefix;
- DecimalFormat::format(numberToFormat, appendTo, pos);
- appendTo += unit->suffix;
- return appendTo;
-}
-
-UnicodeString&
-CompactDecimalFormat::format(
- double /* number */,
- UnicodeString& appendTo,
- FieldPositionIterator* /* posIter */,
- UErrorCode& status) const {
- status = U_UNSUPPORTED_ERROR;
- return appendTo;
-}
-
-UnicodeString&
-CompactDecimalFormat::format(
- int64_t number,
- UnicodeString& appendTo,
- FieldPosition& pos) const {
- return format((double) number, appendTo, pos);
-}
-
-UnicodeString&
-CompactDecimalFormat::format(
- int64_t /* number */,
- UnicodeString& appendTo,
- FieldPositionIterator* /* posIter */,
- UErrorCode& status) const {
- status = U_UNSUPPORTED_ERROR;
- return appendTo;
-}
+CompactDecimalFormat::CompactDecimalFormat(const CompactDecimalFormat& source) = default;
-UnicodeString&
-CompactDecimalFormat::format(
- const StringPiece& /* number */,
- UnicodeString& appendTo,
- FieldPositionIterator* /* posIter */,
- UErrorCode& status) const {
- status = U_UNSUPPORTED_ERROR;
- return appendTo;
-}
+CompactDecimalFormat::~CompactDecimalFormat() = default;
-UnicodeString&
-CompactDecimalFormat::format(
- const DigitList& /* number */,
- UnicodeString& appendTo,
- FieldPositionIterator* /* posIter */,
- UErrorCode& status) const {
- status = U_UNSUPPORTED_ERROR;
- return appendTo;
+CompactDecimalFormat& CompactDecimalFormat::operator=(const CompactDecimalFormat& rhs) {
+ DecimalFormat::operator=(rhs);
+ return *this;
}
-UnicodeString&
-CompactDecimalFormat::format(const DigitList& /* number */,
- UnicodeString& appendTo,
- FieldPosition& /* pos */,
- UErrorCode& status) const {
- status = U_UNSUPPORTED_ERROR;
- return appendTo;
+Format* CompactDecimalFormat::clone() const {
+ return new CompactDecimalFormat(*this);
}
void
CompactDecimalFormat::parse(
- const UnicodeString& /* text */,
- Formattable& /* result */,
- ParsePosition& /* parsePosition */) const {
+ const UnicodeString& /* text */,
+ Formattable& /* result */,
+ ParsePosition& /* parsePosition */) const {
}
void
CompactDecimalFormat::parse(
- const UnicodeString& /* text */,
- Formattable& /* result */,
- UErrorCode& status) const {
- status = U_UNSUPPORTED_ERROR;
+ const UnicodeString& /* text */,
+ Formattable& /* result */,
+ UErrorCode& status) const {
+ status = U_UNSUPPORTED_ERROR;
}
CurrencyAmount*
CompactDecimalFormat::parseCurrency(
- const UnicodeString& /* text */,
- ParsePosition& /* pos */) const {
- return NULL;
+ const UnicodeString& /* text */,
+ ParsePosition& /* pos */) const {
+ return nullptr;
}
-void CDFLocaleStyleData::Init(UErrorCode& status) {
- if (unitsByVariant != NULL) {
- return;
- }
- unitsByVariant = uhash_open(uhash_hashChars, uhash_compareChars, NULL, &status);
- if (U_FAILURE(status)) {
- return;
- }
- uhash_setKeyDeleter(unitsByVariant, uprv_free);
- uhash_setValueDeleter(unitsByVariant, deleteCDFUnits);
-}
-
-CDFLocaleStyleData::~CDFLocaleStyleData() {
- setToBogus();
-}
-
-void CDFLocaleStyleData::setToBogus() {
- if (unitsByVariant != NULL) {
- uhash_close(unitsByVariant);
- unitsByVariant = NULL;
- }
-}
-
-void CDFLocaleData::Init(UErrorCode& status) {
- shortData.Init(status);
- if (U_FAILURE(status)) {
- return;
- }
- longData.Init(status);
-}
-
-// Helper method for operator=
-static UBool divisors_equal(const double* lhs, const double* rhs) {
- for (int32_t i = 0; i < MAX_DIGITS; ++i) {
- if (lhs[i] != rhs[i]) {
- return FALSE;
- }
- }
- return TRUE;
-}
-
-// getCDFLocaleStyleData returns pointer to formatting data for given locale and
-// style within the global cache. On cache miss, getCDFLocaleStyleData loads
-// the data from CLDR into the global cache before returning the pointer. If a
-// UNUM_LONG data is requested for a locale, and that locale does not have
-// UNUM_LONG data, getCDFLocaleStyleData will fall back to UNUM_SHORT data for
-// that locale.
-static const CDFLocaleStyleData* getCDFLocaleStyleData(const Locale& inLocale, UNumberCompactStyle style, UErrorCode& status) {
- if (U_FAILURE(status)) {
- return NULL;
- }
- CDFLocaleData* result = NULL;
- const char* key = inLocale.getName();
- {
- Mutex lock(&gCompactDecimalMetaLock);
- if (gCompactDecimalData == NULL) {
- gCompactDecimalData = uhash_open(uhash_hashChars, uhash_compareChars, NULL, &status);
- if (U_FAILURE(status)) {
- return NULL;
- }
- uhash_setKeyDeleter(gCompactDecimalData, uprv_free);
- uhash_setValueDeleter(gCompactDecimalData, deleteCDFLocaleData);
- ucln_i18n_registerCleanup(UCLN_I18N_CDFINFO, cdf_cleanup);
- } else {
- result = (CDFLocaleData*) uhash_get(gCompactDecimalData, key);
- }
- }
- if (result != NULL) {
- return extractDataByStyleEnum(*result, style, status);
- }
-
- result = loadCDFLocaleData(inLocale, status);
- if (U_FAILURE(status)) {
- return NULL;
- }
-
- {
- Mutex lock(&gCompactDecimalMetaLock);
- CDFLocaleData* temp = (CDFLocaleData*) uhash_get(gCompactDecimalData, key);
- if (temp != NULL) {
- delete result;
- result = temp;
- } else {
- uhash_put(gCompactDecimalData, uprv_strdup(key), (void*) result, &status);
- if (U_FAILURE(status)) {
- return NULL;
- }
- }
- }
- return extractDataByStyleEnum(*result, style, status);
-}
-
-static const CDFLocaleStyleData* extractDataByStyleEnum(const CDFLocaleData& data, UNumberCompactStyle style, UErrorCode& status) {
- switch (style) {
- case UNUM_SHORT:
- return &data.shortData;
- case UNUM_LONG:
- if (!data.longData.isBogus()) {
- return &data.longData;
- }
- return &data.shortData;
- default:
- status = U_ILLEGAL_ARGUMENT_ERROR;
- return NULL;
- }
-}
-
-// loadCDFLocaleData loads formatting data from CLDR for a given locale. The
-// caller owns the returned pointer.
-static CDFLocaleData* loadCDFLocaleData(const Locale& inLocale, UErrorCode& status) {
- if (U_FAILURE(status)) {
- return NULL;
- }
- CDFLocaleData* result = new CDFLocaleData;
- if (result == NULL) {
- status = U_MEMORY_ALLOCATION_ERROR;
- return NULL;
- }
- result->Init(status);
- if (U_FAILURE(status)) {
- delete result;
- return NULL;
- }
-
- initCDFLocaleData(inLocale, result, status);
- if (U_FAILURE(status)) {
- delete result;
- return NULL;
- }
- return result;
-}
-
-// initCDFLocaleData initializes result with data from CLDR.
-// inLocale is the locale, the CLDR data is stored in result.
-// We load the UNUM_SHORT and UNUM_LONG data looking first in local numbering
-// system and not including root locale in fallback. Next we try in the latn
-// numbering system where we fallback all the way to root. If we don't find
-// UNUM_SHORT data in these three places, we report an error. If we find
-// UNUM_SHORT data before finding UNUM_LONG data we make UNUM_LONG data fall
-// back to UNUM_SHORT data.
-static void initCDFLocaleData(const Locale& inLocale, CDFLocaleData* result, UErrorCode& status) {
- LocalPointer<NumberingSystem> ns(NumberingSystem::createInstance(inLocale, status));
- if (U_FAILURE(status)) {
- return;
- }
- const char* numberingSystemName = ns->getName();
- UResourceBundle* rb = ures_open(NULL, inLocale.getName(), &status);
- rb = ures_getByKeyWithFallback(rb, gNumberElementsTag, rb, &status);
- if (U_FAILURE(status)) {
- ures_close(rb);
- return;
- }
- UResourceBundle* shortDataFillIn = NULL;
- UResourceBundle* longDataFillIn = NULL;
- UResourceBundle* shortData = NULL;
- UResourceBundle* longData = NULL;
-
- if (uprv_strcmp(numberingSystemName, gLatnTag) != 0) {
- LocalUResourceBundlePointer localResource(
- tryGetByKeyWithFallback(rb, numberingSystemName, NULL, NOT_ROOT, status));
- shortData = tryGetDecimalFallback(
- localResource.getAlias(), gPatternsShort, &shortDataFillIn, NOT_ROOT, status);
- longData = tryGetDecimalFallback(
- localResource.getAlias(), gPatternsLong, &longDataFillIn, NOT_ROOT, status);
- }
- if (U_FAILURE(status)) {
- ures_close(shortDataFillIn);
- ures_close(longDataFillIn);
- ures_close(rb);
- return;
- }
-
- // If we haven't found UNUM_SHORT look in latn numbering system. We must
- // succeed at finding UNUM_SHORT here.
- if (shortData == NULL) {
- LocalUResourceBundlePointer latnResource(tryGetByKeyWithFallback(rb, gLatnTag, NULL, MUST, status));
- shortData = tryGetDecimalFallback(latnResource.getAlias(), gPatternsShort, &shortDataFillIn, MUST, status);
- if (longData == NULL) {
- longData = tryGetDecimalFallback(latnResource.getAlias(), gPatternsLong, &longDataFillIn, ANY, status);
- if (longData != NULL && isRoot(longData, status) && !isRoot(shortData, status)) {
- longData = NULL;
- }
- }
- }
- initCDFLocaleStyleData(shortData, &result->shortData, status);
- ures_close(shortDataFillIn);
- if (U_FAILURE(status)) {
- ures_close(longDataFillIn);
- ures_close(rb);
- }
-
- if (longData == NULL) {
- result->longData.setToBogus();
- } else {
- initCDFLocaleStyleData(longData, &result->longData, status);
- }
- ures_close(longDataFillIn);
- ures_close(rb);
-}
-
-/**
- * tryGetDecimalFallback attempts to fetch the "decimalFormat" resource bundle
- * with a particular style. style is either "patternsShort" or "patternsLong."
- * FillIn, flags, and status work in the same way as in tryGetByKeyWithFallback.
- */
-static UResourceBundle* tryGetDecimalFallback(const UResourceBundle* numberSystemResource, const char* style, UResourceBundle** fillIn, FallbackFlags flags, UErrorCode& status) {
- UResourceBundle* first = tryGetByKeyWithFallback(numberSystemResource, style, fillIn, flags, status);
- UResourceBundle* second = tryGetByKeyWithFallback(first, gDecimalFormatTag, fillIn, flags, status);
- if (fillIn == NULL) {
- ures_close(first);
- }
- return second;
-}
-
-// tryGetByKeyWithFallback returns a sub-resource bundle that matches given
-// criteria or NULL if none found. rb is the resource bundle that we are
-// searching. If rb == NULL then this function behaves as if no sub-resource
-// is found; path is the key of the sub-resource,
-// (i.e "foo" but not "foo/bar"); If fillIn is NULL, caller must always call
-// ures_close() on returned resource. See below for example when fillIn is
-// not NULL. flags is ANY or NOT_ROOT. Optionally, these values
-// can be ored with MUST. MUST by itself is the same as ANY | MUST.
-// The locale of the returned sub-resource will either match the
-// flags or the returned sub-resouce will be NULL. If MUST is included in
-// flags, and not suitable sub-resource is found then in addition to returning
-// NULL, this function also sets status to U_MISSING_RESOURCE_ERROR. If MUST
-// is not included in flags, then this function just returns NULL if no
-// such sub-resource is found and will never set status to
-// U_MISSING_RESOURCE_ERROR.
-//
-// Example: This code first searches for "foo/bar" sub-resource without falling
-// back to ROOT. Then searches for "baz" sub-resource as last resort.
-//
-// UResourcebundle* fillIn = NULL;
-// UResourceBundle* data = tryGetByKeyWithFallback(rb, "foo", &fillIn, NON_ROOT, status);
-// data = tryGetByKeyWithFallback(data, "bar", &fillIn, NON_ROOT, status);
-// if (!data) {
-// data = tryGetbyKeyWithFallback(rb, "baz", &fillIn, MUST, status);
-// }
-// if (U_FAILURE(status)) {
-// ures_close(fillIn);
-// return;
-// }
-// doStuffWithNonNullSubresource(data);
-//
-// /* Wrong! don't do the following as it can leak memory if fillIn gets set
-// to NULL. */
-// fillIn = tryGetByKeyWithFallback(rb, "wrong", &fillIn, ANY, status);
-//
-// ures_close(fillIn);
-//
-static UResourceBundle* tryGetByKeyWithFallback(const UResourceBundle* rb, const char* path, UResourceBundle** fillIn, FallbackFlags flags, UErrorCode& status) {
- if (U_FAILURE(status)) {
- return NULL;
- }
- UBool must = (flags & MUST);
- if (rb == NULL) {
- if (must) {
- status = U_MISSING_RESOURCE_ERROR;
- }
- return NULL;
- }
- UResourceBundle* result = NULL;
- UResourceBundle* ownedByUs = NULL;
- if (fillIn == NULL) {
- ownedByUs = ures_getByKeyWithFallback(rb, path, NULL, &status);
- result = ownedByUs;
- } else {
- *fillIn = ures_getByKeyWithFallback(rb, path, *fillIn, &status);
- result = *fillIn;
- }
- if (U_FAILURE(status)) {
- ures_close(ownedByUs);
- if (status == U_MISSING_RESOURCE_ERROR && !must) {
- status = U_ZERO_ERROR;
- }
- return NULL;
- }
- flags = (FallbackFlags) (flags & ~MUST);
- switch (flags) {
- case NOT_ROOT:
- {
- UBool bRoot = isRoot(result, status);
- if (bRoot || U_FAILURE(status)) {
- ures_close(ownedByUs);
- if (must && (status == U_ZERO_ERROR)) {
- status = U_MISSING_RESOURCE_ERROR;
- }
- return NULL;
- }
- return result;
- }
- case ANY:
- return result;
- default:
- ures_close(ownedByUs);
- status = U_ILLEGAL_ARGUMENT_ERROR;
- return NULL;
- }
-}
-
-static UBool isRoot(const UResourceBundle* rb, UErrorCode& status) {
- const char* actualLocale = ures_getLocaleByType(
- rb, ULOC_ACTUAL_LOCALE, &status);
- if (U_FAILURE(status)) {
- return FALSE;
- }
- return uprv_strcmp(actualLocale, gRoot) == 0;
-}
-
-
-// initCDFLocaleStyleData loads formatting data for a particular style.
-// decimalFormatBundle is the "decimalFormat" resource bundle in CLDR.
-// Loaded data stored in result.
-static void initCDFLocaleStyleData(const UResourceBundle* decimalFormatBundle, CDFLocaleStyleData* result, UErrorCode& status) {
- if (U_FAILURE(status)) {
- return;
- }
- // Iterate through all the powers of 10.
- int32_t size = ures_getSize(decimalFormatBundle);
- UResourceBundle* power10 = NULL;
- for (int32_t i = 0; i < size; ++i) {
- power10 = ures_getByIndex(decimalFormatBundle, i, power10, &status);
- if (U_FAILURE(status)) {
- ures_close(power10);
- return;
- }
- populatePower10(power10, result, status);
- if (U_FAILURE(status)) {
- ures_close(power10);
- return;
- }
- }
- ures_close(power10);
- fillInMissing(result);
-}
-
-// populatePower10 grabs data for a particular power of 10 from CLDR.
-// The loaded data is stored in result.
-static void populatePower10(const UResourceBundle* power10Bundle, CDFLocaleStyleData* result, UErrorCode& status) {
- if (U_FAILURE(status)) {
- return;
- }
- char* endPtr = NULL;
- double power10 = uprv_strtod(ures_getKey(power10Bundle), &endPtr);
- if (*endPtr != 0) {
- status = U_INTERNAL_PROGRAM_ERROR;
- return;
- }
- int32_t log10Value = computeLog10(power10, FALSE);
- // Silently ignore divisors that are too big.
- if (log10Value == MAX_DIGITS) {
- return;
- }
- int32_t size = ures_getSize(power10Bundle);
- int32_t numZeros = 0;
- UBool otherVariantDefined = FALSE;
- UResourceBundle* variantBundle = NULL;
- // Iterate over all the plural variants for the power of 10
- for (int32_t i = 0; i < size; ++i) {
- variantBundle = ures_getByIndex(power10Bundle, i, variantBundle, &status);
- if (U_FAILURE(status)) {
- ures_close(variantBundle);
- return;
- }
- const char* variant = ures_getKey(variantBundle);
- int32_t resLen;
- const UChar* formatStrP = ures_getString(variantBundle, &resLen, &status);
- if (U_FAILURE(status)) {
- ures_close(variantBundle);
- return;
- }
- UnicodeString formatStr(false, formatStrP, resLen);
- if (uprv_strcmp(variant, gOther) == 0) {
- otherVariantDefined = TRUE;
- }
- int32_t nz = populatePrefixSuffix(
- variant, log10Value, formatStr, result->unitsByVariant, status);
- if (U_FAILURE(status)) {
- ures_close(variantBundle);
- return;
- }
- if (nz != numZeros) {
- // We expect all format strings to have the same number of 0's
- // left of the decimal point.
- if (numZeros != 0) {
- status = U_INTERNAL_PROGRAM_ERROR;
- ures_close(variantBundle);
- return;
- }
- numZeros = nz;
- }
- }
- ures_close(variantBundle);
- // We expect to find an OTHER variant for each power of 10.
- if (!otherVariantDefined) {
- status = U_INTERNAL_PROGRAM_ERROR;
- return;
- }
- double divisor = power10;
- for (int32_t i = 1; i < numZeros; ++i) {
- divisor /= 10.0;
- }
- result->divisors[log10Value] = divisor;
-}
-
-// populatePrefixSuffix Adds a specific prefix-suffix pair to result for a
-// given variant and log10 value.
-// variant is 'zero', 'one', 'two', 'few', 'many', or 'other'.
-// formatStr is the format string from which the prefix and suffix are
-// extracted. It is usually of form 'Pefix 000 suffix'.
-// populatePrefixSuffix returns the number of 0's found in formatStr
-// before the decimal point.
-// In the special case that formatStr contains only spaces for prefix
-// and suffix, populatePrefixSuffix returns log10Value + 1.
-static int32_t populatePrefixSuffix(
- const char* variant, int32_t log10Value, const UnicodeString& formatStr, UHashtable* result, UErrorCode& status) {
- if (U_FAILURE(status)) {
- return 0;
- }
- int32_t firstIdx = formatStr.indexOf(kZero, LENGTHOF(kZero), 0);
- // We must have 0's in format string.
- if (firstIdx == -1) {
- status = U_INTERNAL_PROGRAM_ERROR;
- return 0;
- }
- int32_t lastIdx = formatStr.lastIndexOf(kZero, LENGTHOF(kZero), firstIdx);
- CDFUnit* unit = createCDFUnit(variant, log10Value, result, status);
- if (U_FAILURE(status)) {
- return 0;
- }
- // Everything up to first 0 is the prefix
- unit->prefix = formatStr.tempSubString(0, firstIdx);
- fixQuotes(unit->prefix);
- // Everything beyond the last 0 is the suffix
- unit->suffix = formatStr.tempSubString(lastIdx + 1);
- fixQuotes(unit->suffix);
-
- // If there is effectively no prefix or suffix, ignore the actual number of
- // 0's and act as if the number of 0's matches the size of the number.
- if (onlySpaces(unit->prefix) && onlySpaces(unit->suffix)) {
- return log10Value + 1;
- }
-
- // Calculate number of zeros before decimal point
- int32_t idx = firstIdx + 1;
- while (idx <= lastIdx && formatStr.charAt(idx) == u_0) {
- ++idx;
- }
- return (idx - firstIdx);
-}
-
-static UBool onlySpaces(UnicodeString u) {
- return u.trim().length() == 0;
-}
-
-// fixQuotes unescapes single quotes. Don''t -> Don't. Letter 'j' -> Letter j.
-// Modifies s in place.
-static void fixQuotes(UnicodeString& s) {
- QuoteState state = OUTSIDE;
- int32_t len = s.length();
- int32_t dest = 0;
- for (int32_t i = 0; i < len; ++i) {
- UChar ch = s.charAt(i);
- if (ch == u_apos) {
- if (state == INSIDE_EMPTY) {
- s.setCharAt(dest, ch);
- ++dest;
- }
- } else {
- s.setCharAt(dest, ch);
- ++dest;
- }
-
- // Update state
- switch (state) {
- case OUTSIDE:
- state = ch == u_apos ? INSIDE_EMPTY : OUTSIDE;
- break;
- case INSIDE_EMPTY:
- case INSIDE_FULL:
- state = ch == u_apos ? OUTSIDE : INSIDE_FULL;
- break;
- default:
- break;
- }
- }
- s.truncate(dest);
-}
-
-// fillInMissing ensures that the data in result is complete.
-// result data is complete if for each variant in result, there exists
-// a prefix-suffix pair for each log10 value and there also exists
-// a divisor for each log10 value.
-//
-// First this function figures out for which log10 values, the other
-// variant already had data. These are the same log10 values defined
-// in CLDR.
-//
-// For each log10 value not defined in CLDR, it uses the divisor for
-// the last defined log10 value or 1.
-//
-// Then for each variant, it does the following. For each log10
-// value not defined in CLDR, copy the prefix-suffix pair from the
-// previous log10 value. If log10 value is defined in CLDR but is
-// missing from given variant, copy the prefix-suffix pair for that
-// log10 value from the 'other' variant.
-static void fillInMissing(CDFLocaleStyleData* result) {
- const CDFUnit* otherUnits =
- (const CDFUnit*) uhash_get(result->unitsByVariant, gOther);
- UBool definedInCLDR[MAX_DIGITS];
- double lastDivisor = 1.0;
- for (int32_t i = 0; i < MAX_DIGITS; ++i) {
- if (!otherUnits[i].isSet()) {
- result->divisors[i] = lastDivisor;
- definedInCLDR[i] = FALSE;
- } else {
- lastDivisor = result->divisors[i];
- definedInCLDR[i] = TRUE;
- }
- }
- // Iterate over each variant.
- int32_t pos = -1;
- const UHashElement* element = uhash_nextElement(result->unitsByVariant, &pos);
- for (;element != NULL; element = uhash_nextElement(result->unitsByVariant, &pos)) {
- CDFUnit* units = (CDFUnit*) element->value.pointer;
- for (int32_t i = 0; i < MAX_DIGITS; ++i) {
- if (definedInCLDR[i]) {
- if (!units[i].isSet()) {
- units[i] = otherUnits[i];
- }
- } else {
- if (i == 0) {
- units[0].markAsSet();
- } else {
- units[i] = units[i - 1];
- }
- }
- }
- }
-}
-
-// computeLog10 computes floor(log10(x)). If inRange is TRUE, the biggest
-// value computeLog10 will return MAX_DIGITS -1 even for
-// numbers > 10^MAX_DIGITS. If inRange is FALSE, computeLog10 will return
-// up to MAX_DIGITS.
-static int32_t computeLog10(double x, UBool inRange) {
- int32_t result = 0;
- int32_t max = inRange ? MAX_DIGITS - 1 : MAX_DIGITS;
- while (x >= 10.0) {
- x /= 10.0;
- ++result;
- if (result == max) {
- break;
- }
- }
- return result;
-}
-
-// createCDFUnit returns a pointer to the prefix-suffix pair for a given
-// variant and log10 value within table. If no such prefix-suffix pair is
-// stored in table, one is created within table before returning pointer.
-static CDFUnit* createCDFUnit(const char* variant, int32_t log10Value, UHashtable* table, UErrorCode& status) {
- if (U_FAILURE(status)) {
- return NULL;
- }
- CDFUnit *cdfUnit = (CDFUnit*) uhash_get(table, variant);
- if (cdfUnit == NULL) {
- cdfUnit = new CDFUnit[MAX_DIGITS];
- if (cdfUnit == NULL) {
- status = U_MEMORY_ALLOCATION_ERROR;
- return NULL;
- }
- uhash_put(table, uprv_strdup(variant), cdfUnit, &status);
- if (U_FAILURE(status)) {
- return NULL;
- }
- }
- CDFUnit* result = &cdfUnit[log10Value];
- result->markAsSet();
- return result;
-}
-
-// getCDFUnitFallback returns a pointer to the prefix-suffix pair for a given
-// variant and log10 value within table. If the given variant doesn't exist, it
-// falls back to the OTHER variant. Therefore, this method will always return
-// some non-NULL value.
-static const CDFUnit* getCDFUnitFallback(const UHashtable* table, const UnicodeString& variant, int32_t log10Value) {
- CharString cvariant;
- UErrorCode status = U_ZERO_ERROR;
- const CDFUnit *cdfUnit = NULL;
- cvariant.appendInvariantChars(variant, status);
- if (!U_FAILURE(status)) {
- cdfUnit = (const CDFUnit*) uhash_get(table, cvariant.data());
- }
- if (cdfUnit == NULL) {
- cdfUnit = (const CDFUnit*) uhash_get(table, gOther);
- }
- return &cdfUnit[log10Value];
-}
-U_NAMESPACE_END
-#endif
+#endif /* #if !UCONFIG_NO_FORMATTING */
projects / apple / icu.git / blobdiff