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| <?php | |
| namespace Money\Parser; | |
| use Money\Currencies; | |
| use Money\Currency; | |
| use Money\Exception\ParserException; | |
| use Money\Money; | |
| use Money\MoneyParser; | |
| use Money\Number; | |
| /** | |
| * Parses a decimal string into a Money object. | |
| * | |
| * @author Teoh Han Hui <teohhanhui@gmail.com> | |
| */ | |
| final class DecimalMoneyParser implements MoneyParser | |
| { | |
| const DECIMAL_PATTERN = '/^(?P<sign>-)?(?P<digits>0|[1-9]\d*)?\.?(?P<fraction>\d+)?$/'; | |
| /** | |
| * @var Currencies | |
| */ | |
| private $currencies; | |
| /** | |
| * @param Currencies $currencies | |
| */ | |
| public function __construct(Currencies $currencies) | |
| { | |
| $this->currencies = $currencies; | |
| } | |
| /** | |
| * {@inheritdoc} | |
| */ | |
| public function parse($money, $forceCurrency = null) | |
| { | |
| if (!is_string($money)) { | |
| throw new ParserException('Formatted raw money should be string, e.g. 1.00'); | |
| } | |
| if (null === $forceCurrency) { | |
| throw new ParserException( | |
| 'DecimalMoneyParser cannot parse currency symbols. Use forceCurrency argument' | |
| ); | |
| } | |
| $currency = new Currency($forceCurrency); | |
| $decimal = trim($money); | |
| if ($decimal === '') { | |
| return new Money(0, $currency); | |
| } | |
| $subunit = $this->currencies->subunitFor($currency); | |
| if (!preg_match(self::DECIMAL_PATTERN, $decimal, $matches)) { | |
| throw new ParserException(sprintf( | |
| 'Cannot parse "%s" to Money.', | |
| $decimal | |
| )); | |
| } | |
| $negative = isset($matches['sign']) && $matches['sign'] === '-'; | |
| $decimal = $matches['digits']; | |
| if ($negative) { | |
| $decimal = '-'.$decimal; | |
| } | |
| if (isset($matches['fraction'])) { | |
| $fractionDigits = strlen($matches['fraction']); | |
| $decimal .= $matches['fraction']; | |
| $decimal = Number::roundMoneyValue($decimal, $subunit, $fractionDigits); | |
| if ($fractionDigits > $subunit) { | |
| $decimal = substr($decimal, 0, $subunit - $fractionDigits); | |
| } elseif ($fractionDigits < $subunit) { | |
| $decimal .= str_pad('', $subunit - $fractionDigits, '0'); | |
| } | |
| } else { | |
| $decimal .= str_pad('', $subunit, '0'); | |
| } | |
| if ($negative) { | |
| $decimal = '-'.ltrim(substr($decimal, 1), '0'); | |
| } else { | |
| $decimal = ltrim($decimal, '0'); | |
| } | |
| if ($decimal === '' || $decimal === '-') { | |
| $decimal = '0'; | |
| } | |
| return new Money($decimal, $currency); | |
| } | |
| } |