AggregateCurrencies.php
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BitcoinCurrencies.php
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CachedCurrencies.php
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CurrencyList.php
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ISOCurrencies.php
4 years ago
ISOCurrencies.php
104 lines
| 1 | <?php |
| 2 | |
| 3 | namespace Money\Currencies; |
| 4 | |
| 5 | use Money\Currencies; |
| 6 | use Money\Currency; |
| 7 | use Money\Exception\UnknownCurrencyException; |
| 8 | |
| 9 | /** |
| 10 | * List of supported ISO 4217 currency codes and names. |
| 11 | * |
| 12 | * @author Mathias Verraes |
| 13 | */ |
| 14 | final class ISOCurrencies implements Currencies |
| 15 | { |
| 16 | /** |
| 17 | * Map of known currencies indexed by code. |
| 18 | * |
| 19 | * @var array |
| 20 | */ |
| 21 | private static $currencies; |
| 22 | |
| 23 | /** |
| 24 | * {@inheritdoc} |
| 25 | */ |
| 26 | public function contains(Currency $currency) |
| 27 | { |
| 28 | return isset($this->getCurrencies()[$currency->getCode()]); |
| 29 | } |
| 30 | |
| 31 | /** |
| 32 | * {@inheritdoc} |
| 33 | */ |
| 34 | public function subunitFor(Currency $currency) |
| 35 | { |
| 36 | if (!$this->contains($currency)) { |
| 37 | throw new UnknownCurrencyException('Cannot find ISO currency '.$currency->getCode()); |
| 38 | } |
| 39 | |
| 40 | return $this->getCurrencies()[$currency->getCode()]['minorUnit']; |
| 41 | } |
| 42 | |
| 43 | /** |
| 44 | * Returns the numeric code for a currency. |
| 45 | * |
| 46 | * @param Currency $currency |
| 47 | * |
| 48 | * @return int |
| 49 | * |
| 50 | * @throws UnknownCurrencyException If currency is not available in the current context |
| 51 | */ |
| 52 | public function numericCodeFor(Currency $currency) |
| 53 | { |
| 54 | if (!$this->contains($currency)) { |
| 55 | throw new UnknownCurrencyException('Cannot find ISO currency '.$currency->getCode()); |
| 56 | } |
| 57 | |
| 58 | return $this->getCurrencies()[$currency->getCode()]['numericCode']; |
| 59 | } |
| 60 | |
| 61 | /** |
| 62 | * @return \Traversable |
| 63 | */ |
| 64 | public function getIterator() |
| 65 | { |
| 66 | return new \ArrayIterator( |
| 67 | array_map( |
| 68 | function ($code) { |
| 69 | return new Currency($code); |
| 70 | }, |
| 71 | array_keys($this->getCurrencies()) |
| 72 | ) |
| 73 | ); |
| 74 | } |
| 75 | |
| 76 | /** |
| 77 | * Returns a map of known currencies indexed by code. |
| 78 | * |
| 79 | * @return array |
| 80 | */ |
| 81 | private function getCurrencies() |
| 82 | { |
| 83 | if (null === self::$currencies) { |
| 84 | self::$currencies = $this->loadCurrencies(); |
| 85 | } |
| 86 | |
| 87 | return self::$currencies; |
| 88 | } |
| 89 | |
| 90 | /** |
| 91 | * @return array |
| 92 | */ |
| 93 | private function loadCurrencies() |
| 94 | { |
| 95 | $file = __DIR__.'/../../resources/currency.php'; |
| 96 | |
| 97 | if (file_exists($file)) { |
| 98 | return require $file; |
| 99 | } |
| 100 | |
| 101 | throw new \RuntimeException('Failed to load currency ISO codes.'); |
| 102 | } |
| 103 | } |
| 104 |