63 lines
2.3 KiB
Swift
63 lines
2.3 KiB
Swift
//
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// Copyright (c) 2022 Touch Instinct
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the Software), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED AS IS, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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//
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import Foundation
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open class ISO8601DateFormattersReusePool {
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private var pool: ThreadSafeDictionary<ISO8601DateFormatter.Options, ISO8601DateFormatter> = [:]
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private let presetTimeZone: TimeZone?
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public init(presetTimeZone: TimeZone? = nil) {
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self.presetTimeZone = presetTimeZone
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}
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open func dateFormatter(for options: ISO8601DateFormatter.Options) -> ISO8601DateFormatter {
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guard let cachedFormatter = pool[options] else {
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return register(options: options)
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}
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return cachedFormatter
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}
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@discardableResult
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open func register(options: ISO8601DateFormatter.Options) -> ISO8601DateFormatter {
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let dateFormatter = ISO8601DateFormatter()
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dateFormatter.formatOptions = options
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if let timeZone = presetTimeZone {
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dateFormatter.timeZone = timeZone
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}
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pool[options] = dateFormatter
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return dateFormatter
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}
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}
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// Conformance of 'ISO8601DateFormatter.Options' to 'Hashable' is only available in iOS 15.0 or newer
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extension ISO8601DateFormatter.Options: Hashable {
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public func hash(into hasher: inout Hasher) {
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hasher.combine(rawValue)
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}
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}
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