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[Intl][Currency] fetch active currencies in currency type by default #61400

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[Intl][Currency] fetch active currencies in currency type by default #61400

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38 changes: 27 additions & 11 deletions src/Symfony/Component/Intl/Currencies.php
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Original file line number Diff line number Diff line change
Expand Up @@ -58,27 +58,30 @@ public static function getName(string $currency, ?string $displayLocale = null):
/**
* @return string[]
*/
public static function getNames(?string $displayLocale = null): array
public static function getNames(?string $displayLocale = null, bool $obsoleteCurrencies = false): array
{
// ====================================================================
// For reference: It is NOT possible to return names indexed by
// numeric code here, because some numeric codes map to multiple
// 3-letter codes (e.g. 32 => "ARA", "ARP", "ARS")
// ====================================================================

$names = self::readEntry(['Names'], $displayLocale);

if ($names instanceof \Traversable) {
$names = iterator_to_array($names);
}

array_walk($names, function (&$value) {
$value = $value[self::INDEX_NAME];
});
$result = [];
foreach ($names as $code => $value) {
$currencyName = $value[self::INDEX_NAME];

// If obsoleteCurrencies=false, skip obsolete ones
if (!$obsoleteCurrencies && self::isObsolete($code)) {
continue;
}

$result[$code] = $currencyName;
}

return self::asort($names, $displayLocale);
return self::asort($result, $displayLocale);
}


/**
* @throws MissingResourceException if the currency code does not exist
*/
Expand Down Expand Up @@ -143,4 +146,17 @@ protected static function getPath(): string
{
return Intl::getDataDirectory().'/'.Intl::CURRENCY_DIR;
}
/**
* Check whether a currency is obsolete based on ICU metadata.
* @param string $code ISO 4217 currency code (e.g. "USD", "BEF").
*/
public static function isObsolete(string $code): bool
{
try {
self::readEntry(['Meta', $code], 'meta');
return false;
} catch (MissingResourceException $e) {
return true;
}
}
}
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