57 lines
1.9 KiB
Swift
57 lines
1.9 KiB
Swift
//
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// Formatters.swift
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// Buildkite
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//
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// Created by Aaron Sky on 3/23/20.
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// Copyright © 2020 Aaron Sky. All rights reserved.
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//
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import Foundation
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#if canImport(FoundationNetworking)
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import FoundationNetworking
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#endif
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enum Formatters {
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static let iso8601WithFractionalSeconds: ISO8601DateFormatter = {
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let formatter: ISO8601DateFormatter
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if #available(iOS 11.0, macOS 10.13, tvOS 11.0, watchOS 4.0, *) {
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formatter = ISO8601DateFormatter()
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formatter.formatOptions = [.withInternetDateTime, .withFractionalSeconds]
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} else {
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formatter = Formatters.iso8601WithoutFractionalSeconds
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}
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return formatter
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}()
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static let iso8601WithoutFractionalSeconds: ISO8601DateFormatter = {
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let formatter = ISO8601DateFormatter()
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formatter.formatOptions = [.withInternetDateTime]
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return formatter
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}()
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static func dateIfPossible(fromISO8601 string: String) -> Date? {
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if let date = iso8601WithFractionalSeconds.date(from: string) {
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return date
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} else if let date = iso8601WithoutFractionalSeconds.date(from: string) {
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return date
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}
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return nil
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}
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static func encodeISO8601(date: Date, encoder: Encoder) throws {
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var container = encoder.singleValueContainer()
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let dateString = iso8601WithoutFractionalSeconds.string(from: date)
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try container.encode(dateString)
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}
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static func decodeISO8601(decoder: Decoder) throws -> Date {
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let container = try decoder.singleValueContainer()
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let dateString = try container.decode(String.self)
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guard let date = dateIfPossible(fromISO8601: dateString) else {
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throw DecodingError.dataCorrupted(DecodingError.Context(codingPath: container.codingPath, debugDescription: "Expected date string to be ISO8601-formatted."))
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}
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return date
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}
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}
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