CurrencyNames.php

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<?php
 
class CurrencyNames extends CldrNames {
 
    private static $cache = [];
 
    public static function getNames( $code ) {
        // Load currency names localized for the requested language
        $names = self::loadLanguage( $code );
 
        // Load missing currency names from fallback languages
        $fallbacks = Language::getFallbacksFor( $code );
        foreach ( $fallbacks as $fallback ) {
            // Overwrite the things in fallback with what we have already
            $names = array_merge( self::loadLanguage( $fallback ), $names );
        }
 
        return $names;
    }
 
    private static function loadLanguage( $code ) {
        if ( !isset( self::$cache[$code] ) ) {
            /* Load override for wrong or missing entries in cldr */
            $override = __DIR__ . '/../LocalNames/' . self::getOverrideFileName( $code );
            if ( Language::isValidBuiltInCode( $code ) && file_exists( $override ) ) {
                $currencyNames = false;
                require $override;
                // @phan-suppress-next-line PhanImpossibleCondition
                if ( is_array( $currencyNames ) ) {
                    self::$cache[$code] = $currencyNames;
                }
            }
 
            $filename = __DIR__ . '/../CldrNames/' . self::getFileName( $code );
            if ( Language::isValidBuiltInCode( $code ) && file_exists( $filename ) ) {
                $currencyNames = false;
                require $filename;
                // @phan-suppress-next-line PhanImpossibleCondition
                if ( is_array( $currencyNames ) ) {
                    if ( isset( self::$cache[$code] ) ) {
                        // Add to existing list of localized currency names
                        self::$cache[$code] = self::$cache[$code] + $currencyNames;
                    } else {
                        // No list exists, so create it
                        self::$cache[$code] = $currencyNames;
                    }
                }
            } else {
                wfDebug( __METHOD__ . ": Unable to load currency names for $filename\n" );
            }
        }
 
        return self::$cache[$code] ?? [];
    }
}