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