46 lines
1.4 KiB
Swift
46 lines
1.4 KiB
Swift
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import Foundation
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/// A reusable, bundle-bound localizer that resolves String Catalog entries for an explicit locale.
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///
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/// A server has no single "current" locale, so each lookup must name the locale to use. An instance
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/// is bound to the bundle whose catalog holds the strings, then invoked like a function to resolve a
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/// key in a chosen locale.
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public struct Localize: Sendable {
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// MARK: Properties
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/// The bundle whose compiled String Catalog the keys are resolved against.
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private let bundle: Bundle
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// MARK: Initializers
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/// Creates a localizer backed by the given bundle.
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/// - Parameter bundle: the bundle whose String Catalog contains the keys to resolve.
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public init(
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bundle: Bundle
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) {
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self.bundle = bundle
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}
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// MARK: Methods
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/// Resolves a catalog key in the given locale.
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///
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/// Invoked by calling the instance directly, for example `localize("index.title", locale: locale)`.
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/// - Parameters:
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/// - key: the String Catalog key to look up.
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/// - locale: the locale to resolve the key in.
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/// - Returns: the localized string for the locale, or the key itself when the bundle's catalog has no entry for it.
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public func callAsFunction(
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_ key: String.LocalizationValue,
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locale: Locale
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) -> String {
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.init(localized: .init(
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key,
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locale: locale,
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bundle: .atURL(bundle.bundleURL)
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))
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}
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}
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