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// © 2016 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html
/*
*****************************************************************************************
* Copyright (C) 2010-2012, International Business Machines
* Corporation and others. All Rights Reserved.
*****************************************************************************************
*/
#include "unicode/utypes.h"
#if !UCONFIG_NO_FORMATTING
#include "unicode/upluralrules.h"
#include "unicode/plurrule.h"
#include "unicode/locid.h"
#include "unicode/unistr.h"
#include "unicode/unum.h"
#include "unicode/numfmt.h"
#include "number_decimalquantity.h"
U_NAMESPACE_USE
namespace {
/**
* Given a number and a format, returns the keyword of the first applicable
* rule for the PluralRules object.
* @param rules The plural rules.
* @param obj The numeric object for which the rule should be determined.
* @param fmt The NumberFormat specifying how the number will be formatted
* (this can affect the plural form, e.g. "1 dollar" vs "1.0 dollars").
* @param status Input/output parameter. If at entry this indicates a
* failure status, the method returns immediately; otherwise
* this is set to indicate the outcome of the call.
* @return The keyword of the selected rule. Undefined in the case of an error.
*/
UnicodeString select(const PluralRules &rules, const Formattable& obj, const NumberFormat& fmt, UErrorCode& status) {
if (U_SUCCESS(status)) {
const DecimalFormat *decFmt = dynamic_cast<const DecimalFormat *>(&fmt);
if (decFmt != NULL) {
number::impl::DecimalQuantity dq;
decFmt->formatToDecimalQuantity(obj, dq, status);
if (U_SUCCESS(status)) {
return rules.select(dq);
}
} else {
double number = obj.getDouble(status);
if (U_SUCCESS(status)) {
return rules.select(number);
}
}
}
return UnicodeString();
}
} // namespace
U_CAPI UPluralRules* U_EXPORT2
uplrules_open(const char *locale, UErrorCode *status)
{
return uplrules_openForType(locale, UPLURAL_TYPE_CARDINAL, status);
}
U_CAPI UPluralRules* U_EXPORT2
uplrules_openForType(const char *locale, UPluralType type, UErrorCode *status)
{
return (UPluralRules*)PluralRules::forLocale(Locale(locale), type, *status);
}
U_CAPI void U_EXPORT2
uplrules_close(UPluralRules *uplrules)
{
delete (PluralRules*)uplrules;
}
U_CAPI int32_t U_EXPORT2
uplrules_select(const UPluralRules *uplrules,
double number,
UChar *keyword, int32_t capacity,
UErrorCode *status)
{
if (U_FAILURE(*status)) {
return 0;
}
if (keyword == NULL ? capacity != 0 : capacity < 0) {
*status = U_ILLEGAL_ARGUMENT_ERROR;
return 0;
}
UnicodeString result = ((PluralRules*)uplrules)->select(number);
return result.extract(keyword, capacity, *status);
}
U_CAPI int32_t U_EXPORT2
uplrules_selectWithFormat(const UPluralRules *uplrules,
double number,
const UNumberFormat *fmt,
UChar *keyword, int32_t capacity,
UErrorCode *status)
{
if (U_FAILURE(*status)) {
return 0;
}
const PluralRules* plrules = reinterpret_cast<const PluralRules*>(uplrules);
const NumberFormat* nf = reinterpret_cast<const NumberFormat*>(fmt);
if (plrules == NULL || nf == NULL || ((keyword == NULL)? capacity != 0 : capacity < 0)) {
*status = U_ILLEGAL_ARGUMENT_ERROR;
return 0;
}
Formattable obj(number);
UnicodeString result = select(*plrules, obj, *nf, *status);
return result.extract(keyword, capacity, *status);
}
U_CAPI UEnumeration* U_EXPORT2
uplrules_getKeywords(const UPluralRules *uplrules,
UErrorCode *status)
{
if (U_FAILURE(*status)) {
return NULL;
}
const PluralRules* plrules = reinterpret_cast<const PluralRules*>(uplrules);
if (plrules == NULL) {
*status = U_ILLEGAL_ARGUMENT_ERROR;
return NULL;
}
StringEnumeration *senum = plrules->getKeywords(*status);
if (U_FAILURE(*status)) {
return NULL;
}
if (senum == NULL) {
*status = U_MEMORY_ALLOCATION_ERROR;
return NULL;
}
return uenum_openFromStringEnumeration(senum, status);
}
#endif /* #if !UCONFIG_NO_FORMATTING */
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