rdar://106898040 (Fix currency text field)

Author: parkera

Sources/FoundationInternationalization/Locale/Locale.swift

@@ -321,6 +321,20 @@ public struct Locale : Hashable, Equatable, Sendable {
         }
     }
 
+    /// This exists in `NSLocale` via the `displayName` API, using the currency *symbol* key instead of *code*.
+    internal func localizedString(forCurrencySymbol currencySymbol: String) -> String? {
+        switch kind {
+        case .fixed(let l):
+            return l.currencySymbolDisplayName(for: currencySymbol)
+#if FOUNDATION_FRAMEWORK
+        case .bridged(let l):
+            return l.currencySymbolDisplayName(for: currencySymbol)
+#endif
+        case .autoupdating:
+            return LocaleCache.cache.current.currencySymbolDisplayName(for: currencySymbol)
+        }
+    }
+    
     /// Returns a localized string for a specified ICU collation identifier.
     ///
     /// For example, in the "en" locale, the result for `"phonebook"` is `"Phonebook Sort Order"`.

Sources/FoundationInternationalization/Locale/Locale_Wrappers.swift

@@ -265,6 +265,10 @@ internal final class _NSLocaleSwiftWrapper: @unchecked Sendable, Hashable, Custo
     func currencyCodeDisplayName(for currencyCode: String) -> String? {
         return _wrapped.displayName(forKey: .currencyCode, value: currencyCode)
     }
+    
+    func currencySymbolDisplayName(for currencySymbol: String) -> String? {
+        return _wrapped.displayName(forKey: .currencySymbol, value: currencySymbol)
+    }
 
     func collationIdentifierDisplayName(for collationIdentifier: String) -> String? {
         return _wrapped.displayName(forKey: .collationIdentifier, value: collationIdentifier)
@@ -502,7 +506,7 @@ internal class _NSSwiftLocale: _NSLocaleBridge {
         case .measurementSystem: return nil
         case .decimalSeparator: return nil
         case .groupingSeparator: return nil
-        case .currencySymbol: return self.localizedString(forCurrencyCode: value)
+        case .currencySymbol: return self.localizedString(forCurrencySymbol: value)
         case .currencyCode: return self.localizedString(forCurrencyCode: value)
         case .collatorIdentifier: return self.localizedString(forCollatorIdentifier: value)
         case .quotationBeginDelimiterKey: return nil
@@ -640,6 +644,10 @@ internal class _NSSwiftLocale: _NSLocaleBridge {
         locale.localizedString(forCurrencyCode: currencyCode)
     }
 
+    override func localizedString(forCurrencySymbol currencySymbol: String) -> String? {
+        locale.localizedString(forCurrencySymbol: currencySymbol)
+    }
+
     override func localizedString(forCollatorIdentifier collatorIdentifier: String) -> String? {
         locale.localizedString(forCollatorIdentifier: collatorIdentifier)
     }