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https://github.com/RevenueCat/purchases-ios
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NachoSoto
8483c29f47
This allows decorating a `String` property in a `Decodable` type so it ensures it gets converted to `nil` if it's empty. It will be used for `PaywallData`.
60 lines
1.4 KiB
Swift
60 lines
1.4 KiB
Swift
//
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// Copyright RevenueCat Inc. All Rights Reserved.
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//
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// Licensed under the MIT License (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// https://opensource.org/licenses/MIT
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//
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// NonEmptyStringDecodable.swift
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//
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// Created by Nacho Soto on 7/14/23.
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import Foundation
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/// A property wrapper that ensures decoded strings aren't empty
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/// - Example:
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/// ```
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/// struct Data {
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/// @NonEmptyStringDecodable var value: String? // becomes `nil` if value is empty or has only whitespaces
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/// }
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/// ```
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@propertyWrapper
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struct NonEmptyStringDecodable {
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var wrappedValue: String?
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}
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extension NonEmptyStringDecodable: Equatable, Hashable {}
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extension NonEmptyStringDecodable: Decodable {
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init(from decoder: Decoder) throws {
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let container = try decoder.singleValueContainer()
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self.wrappedValue = try container.decode(String?.self)?.notEmptyOrWhitespaces
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}
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}
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extension NonEmptyStringDecodable: Encodable {
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func encode(to encoder: Encoder) throws {
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var container = encoder.singleValueContainer()
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try container.encode(self.wrappedValue)
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}
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}
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extension KeyedDecodingContainer {
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func decode(
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_ type: NonEmptyStringDecodable.Type,
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forKey key: Key
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) throws -> NonEmptyStringDecodable {
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return try self.decodeIfPresent(type, forKey: key) ?? .init()
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}
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}
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