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| <?php | |
| namespace Money\Formatter; | |
| use Money\Currencies; | |
| use Money\Currencies\BitcoinCurrencies; | |
| use Money\Exception\FormatterException; | |
| use Money\Money; | |
| use Money\MoneyFormatter; | |
| use Money\Number; | |
| /** | |
| * Formats Money to Bitcoin currency. | |
| * | |
| * @author Frederik Bosch <f.bosch@genkgo.nl> | |
| */ | |
| final class BitcoinMoneyFormatter implements MoneyFormatter | |
| { | |
| /** | |
| * @var int | |
| */ | |
| private $fractionDigits; | |
| /** | |
| * @var Currencies | |
| */ | |
| private $currencies; | |
| /** | |
| * @param int $fractionDigits | |
| * @param Currencies $currencies | |
| */ | |
| public function __construct($fractionDigits, Currencies $currencies) | |
| { | |
| $this->fractionDigits = $fractionDigits; | |
| $this->currencies = $currencies; | |
| } | |
| /** | |
| * {@inheritdoc} | |
| */ | |
| public function format(Money $money) | |
| { | |
| if (BitcoinCurrencies::CODE !== $money->getCurrency()->getCode()) { | |
| 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, strpos($formatted, '.')); | |
| } elseif ($this->fractionDigits > $subunit) { | |
| $formatted .= str_pad('', $this->fractionDigits - $subunit, '0'); | |
| } elseif ($this->fractionDigits < $subunit) { | |
| $lastDigit = strpos($formatted, '.') + $this->fractionDigits + 1; | |
| $formatted = substr($formatted, 0, $lastDigit); | |
| } | |
| $formatted = BitcoinCurrencies::SYMBOL.$formatted; | |
| if (true === $negative) { | |
| $formatted = '-'.$formatted; | |
| } | |
| return $formatted; | |
| } | |
| } |