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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,127 @@ | ||
| // Vendored from: https://github.com/sindresorhus/Defaults | ||
| import Foundation | ||
|
|
||
| public final class Defaults { | ||
| public class Keys { | ||
| fileprivate init() {} | ||
| } | ||
|
|
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| public final class Key<T: Codable>: Keys { | ||
| fileprivate let name: String | ||
| fileprivate let defaultValue: T | ||
|
|
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| public init(_ key: String, default defaultValue: T) { | ||
| self.name = key | ||
| self.defaultValue = defaultValue | ||
| } | ||
| } | ||
|
|
||
| public final class OptionalKey<T: Codable>: Keys { | ||
| fileprivate let name: String | ||
|
|
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| public init(_ key: String) { | ||
| self.name = key | ||
| } | ||
| } | ||
|
|
||
| public subscript<T: Codable>(key: Defaults.Key<T>) -> T { | ||
| get { | ||
| return UserDefaults.standard[key] | ||
| } | ||
| set { | ||
| UserDefaults.standard[key] = newValue | ||
| } | ||
| } | ||
|
|
||
| public subscript<T: Codable>(key: Defaults.OptionalKey<T>) -> T? { | ||
| get { | ||
| return UserDefaults.standard[key] | ||
| } | ||
| set { | ||
| UserDefaults.standard[key] = newValue | ||
| } | ||
| } | ||
|
|
||
| public func clear() { | ||
| for key in UserDefaults.standard.dictionaryRepresentation().keys { | ||
| UserDefaults.standard.removeObject(forKey: key) | ||
| } | ||
| } | ||
| } | ||
|
|
||
| // Has to be `defaults` lowercase until Swift supports static subscripts… | ||
| public let defaults = Defaults() | ||
|
|
||
| public extension UserDefaults { | ||
| private func _get<T: Codable>(_ key: String) -> T? { | ||
| if isNativelySupportedType(T.self) { | ||
| return object(forKey: key) as? T | ||
| } | ||
|
|
||
| guard let text = string(forKey: key), | ||
| let data = "[\(text)]".data(using: .utf8) else { | ||
| return nil | ||
| } | ||
|
|
||
| do { | ||
| return (try JSONDecoder().decode([T].self, from: data)).first | ||
| } catch { | ||
| print(error) | ||
| } | ||
|
|
||
| return nil | ||
| } | ||
|
|
||
| private func _set<T: Codable>(_ key: String, to value: T) { | ||
| if isNativelySupportedType(T.self) { | ||
| set(value, forKey: key) | ||
| return | ||
| } | ||
|
|
||
| do { | ||
| // Some codable values like URL and enum are encoded as a top-level | ||
| // string which JSON can't handle, so we need to wrap it in an array | ||
| // We need this: https://forums.swift.org/t/allowing-top-level-fragments-in-jsondecoder/11750 | ||
| let data = try JSONEncoder().encode([value]) | ||
| let string = String(data: data, encoding: .utf8)?.dropFirst().dropLast() | ||
| set(string, forKey: key) | ||
| } catch { | ||
| print(error) | ||
| } | ||
| } | ||
|
|
||
| public subscript<T: Codable>(key: Defaults.Key<T>) -> T { | ||
| get { | ||
| return _get(key.name) ?? key.defaultValue | ||
| } | ||
| set { | ||
| _set(key.name, to: newValue) | ||
| } | ||
| } | ||
|
|
||
| public subscript<T: Codable>(key: Defaults.OptionalKey<T>) -> T? { | ||
| get { | ||
| return _get(key.name) | ||
| } | ||
| set { | ||
| if let value = newValue { | ||
| _set(key.name, to: value) | ||
| } | ||
| } | ||
| } | ||
|
|
||
| private func isNativelySupportedType<T>(_ type: T.Type) -> Bool { | ||
| switch type { | ||
| case is Bool.Type, | ||
| is String.Type, | ||
| is Int.Type, | ||
| is Double.Type, | ||
| is Float.Type, | ||
| is Date.Type, | ||
| is Data.Type: | ||
| return true | ||
| default: | ||
| return false | ||
| } | ||
| } | ||
| } |
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