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#import <Foundation/Foundation.h>
#include <mbgl/i18n/number_format.hpp>
namespace mbgl {
namespace platform {
std::string formatNumber(double number, const std::string& localeId, const std::string& currency,
uint8_t minFractionDigits, uint8_t maxFractionDigits) {
static NSNumberFormatter *numberFormatter;
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
numberFormatter = [[NSNumberFormatter alloc] init];
});
numberFormatter.locale = !localeId.empty() ? [NSLocale localeWithLocaleIdentifier:@(localeId.c_str())] : nil;
numberFormatter.currencyCode = !currency.empty() ? @(currency.c_str()) : nil;
if (currency.empty()) {
numberFormatter.minimumFractionDigits = minFractionDigits;
numberFormatter.maximumFractionDigits = maxFractionDigits;
numberFormatter.numberStyle = NSNumberFormatterDecimalStyle;
} else {
// Reset fraction digits to NSNumberFormatter's default values, so that the
// system will choose formatting based on number formatter locale.
numberFormatter.minimumFractionDigits = 0;
numberFormatter.maximumFractionDigits = 0;
numberFormatter.numberStyle = NSNumberFormatterCurrencyStyle;
}
NSString *formatted = [numberFormatter stringFromNumber:@(number)];
std::string result = std::string([formatted UTF8String]);
return result;
}
} // namespace platform
} // namespace mbgl
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