Viewing file:  BitcoinMoneyFormatter.php (2.29 KB) -rw-r--r--
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<?php
declare(strict_types=1);
namespace Money\Formatter;
use Money\Currencies;
use Money\Currencies\BitcoinCurrencies;
use Money\Exception\FormatterException;
use Money\Money;
use Money\MoneyFormatter;
use Money\Number;
use function str_pad;
use function strlen;
use function strpos;
use function substr;
/**
* Formats Money to Bitcoin currency.
*/
final class BitcoinMoneyFormatter implements MoneyFormatter
{
private int $fractionDigits;
private Currencies $currencies;
public function __construct(int $fractionDigits, Currencies $currencies)
{
$this->fractionDigits = $fractionDigits;
$this->currencies = $currencies;
}
public function format(Money $money): string
{
if ($money->getCurrency()->getCode() !== BitcoinCurrencies::CODE) {
throw new FormatterException('Bitcoin Formatter can only format Bitcoin currency');
}
$valueBase = $money->getAmount();
$negative = false;
if ($valueBase[0] === '-') {
$negative = true;
$valueBase = substr($valueBase, 1);
}
$subunit = $this->currencies->subunitFor($money->getCurrency());
$valueBase = Number::roundMoneyValue($valueBase, $this->fractionDigits, $subunit);
$valueLength = strlen($valueBase);
if ($valueLength > $subunit) {
$formatted = substr($valueBase, 0, $valueLength - $subunit);
if ($subunit) {
$formatted .= '.';
$formatted .= substr($valueBase, $valueLength - $subunit);
}
} else {
$formatted = '0.' . str_pad('', $subunit - $valueLength, '0') . $valueBase;
}
if ($this->fractionDigits === 0) {
$formatted = substr($formatted, 0, (int) strpos($formatted, '.'));
} elseif ($this->fractionDigits > $subunit) {
$formatted .= str_pad('', $this->fractionDigits - $subunit, '0');
} elseif ($this->fractionDigits < $subunit) {
$lastDigit = (int) strpos($formatted, '.') + $this->fractionDigits + 1;
$formatted = substr($formatted, 0, $lastDigit);
}
$formatted = BitcoinCurrencies::SYMBOL . $formatted;
if ($negative) {
$formatted = '-' . $formatted;
}
return $formatted;
}
}
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