BitcoinMoneyFormatter.php
| 1 | <?php |
| 2 | |
| 3 | namespace Money\Formatter; |
| 4 | |
| 5 | use Money\Currencies; |
| 6 | use Money\Currencies\BitcoinCurrencies; |
| 7 | use Money\Exception\FormatterException; |
| 8 | use Money\Money; |
| 9 | use Money\MoneyFormatter; |
| 10 | use Money\Number; |
| 11 | |
| 12 | /** |
| 13 | * Formats Money to Bitcoin currency. |
| 14 | * |
| 15 | * @author Frederik Bosch <f.bosch@genkgo.nl> |
| 16 | */ |
| 17 | final class BitcoinMoneyFormatter implements MoneyFormatter |
| 18 | { |
| 19 | /** |
| 20 | * @var int |
| 21 | */ |
| 22 | private $fractionDigits; |
| 23 | |
| 24 | /** |
| 25 | * @var Currencies |
| 26 | */ |
| 27 | private $currencies; |
| 28 | |
| 29 | /** |
| 30 | * @param int $fractionDigits |
| 31 | * @param Currencies $currencies |
| 32 | */ |
| 33 | public function __construct($fractionDigits, Currencies $currencies) |
| 34 | { |
| 35 | $this->fractionDigits = $fractionDigits; |
| 36 | $this->currencies = $currencies; |
| 37 | } |
| 38 | |
| 39 | /** |
| 40 | * {@inheritdoc} |
| 41 | */ |
| 42 | public function format(Money $money) |
| 43 | { |
| 44 | if (BitcoinCurrencies::CODE !== $money->getCurrency()->getCode()) { |
| 45 | throw new FormatterException('Bitcoin Formatter can only format Bitcoin currency'); |
| 46 | } |
| 47 | |
| 48 | $valueBase = $money->getAmount(); |
| 49 | $negative = false; |
| 50 | |
| 51 | if ('-' === $valueBase[0]) { |
| 52 | $negative = true; |
| 53 | $valueBase = substr($valueBase, 1); |
| 54 | } |
| 55 | |
| 56 | $subunit = $this->currencies->subunitFor($money->getCurrency()); |
| 57 | $valueBase = Number::roundMoneyValue($valueBase, $this->fractionDigits, $subunit); |
| 58 | $valueLength = strlen($valueBase); |
| 59 | |
| 60 | if ($valueLength > $subunit) { |
| 61 | $formatted = substr($valueBase, 0, $valueLength - $subunit); |
| 62 | |
| 63 | if ($subunit) { |
| 64 | $formatted .= '.'; |
| 65 | $formatted .= substr($valueBase, $valueLength - $subunit); |
| 66 | } |
| 67 | } else { |
| 68 | $formatted = '0.'.str_pad('', $subunit - $valueLength, '0').$valueBase; |
| 69 | } |
| 70 | |
| 71 | if ($this->fractionDigits === 0) { |
| 72 | $formatted = substr($formatted, 0, strpos($formatted, '.')); |
| 73 | } elseif ($this->fractionDigits > $subunit) { |
| 74 | $formatted .= str_pad('', $this->fractionDigits - $subunit, '0'); |
| 75 | } elseif ($this->fractionDigits < $subunit) { |
| 76 | $lastDigit = strpos($formatted, '.') + $this->fractionDigits + 1; |
| 77 | $formatted = substr($formatted, 0, $lastDigit); |
| 78 | } |
| 79 | |
| 80 | $formatted = BitcoinCurrencies::SYMBOL.$formatted; |
| 81 | |
| 82 | if (true === $negative) { |
| 83 | $formatted = '-'.$formatted; |
| 84 | } |
| 85 | |
| 86 | return $formatted; |
| 87 | } |
| 88 | } |
| 89 |