65 lines
2.5 KiB
Swift
65 lines
2.5 KiB
Swift
import Foundation
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/// 官网上的版本清单（https://getopenstats.com/download/appcast.json），由 Scripts/publish_release.sh 生成
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public struct UpdateRelease: Codable, Sendable, Equatable {
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public let version: String
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public let build: String
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public let date: String
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public let minimumSystem: String
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/// 应用内升级下载的 zip（已公证、已装订的 OpenStats.app）
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public let url: URL
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public let sha256: String
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public let size: Int64
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/// 手动安装用的 DMG
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public let dmg: URL?
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/// 最近更新的摘要，每条一句
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public let notes: [String]
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public let changelog: URL?
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public init(version: String, build: String, date: String, minimumSystem: String, url: URL, sha256: String,
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size: Int64, dmg: URL?, notes: [String], changelog: URL?) {
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self.version = version
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self.build = build
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self.date = date
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self.minimumSystem = minimumSystem
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self.url = url
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self.sha256 = sha256
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self.size = size
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self.dmg = dmg
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self.notes = notes
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self.changelog = changelog
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}
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}
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public enum UpdateFeed {
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public static let url = URL(string: "https://getopenstats.com/download/appcast.json")!
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public static func parse(_ data: Data) -> UpdateRelease? {
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guard let release = try? JSONDecoder().decode(UpdateRelease.self, from: data),
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!release.version.isEmpty, release.sha256.count == 64,
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release.url.scheme == "https" else { return nil }
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return release
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}
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/// 按数字逐段比较版本号：“0.10.0” 比 “0.9.3” 新，“1.0” 与 “1.0.0” 相同
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public static func isNewer(_ candidate: String, than current: String) -> Bool {
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let lhs = components(candidate), rhs = components(current)
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for index in 0..<max(lhs.count, rhs.count) {
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let a = index < lhs.count ? lhs[index] : 0
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let b = index < rhs.count ? rhs[index] : 0
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if a != b { return a > b }
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}
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return false
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}
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/// 当前系统是否满足清单要求的最低版本
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public static func systemSatisfies(_ minimum: String, current: OperatingSystemVersion = ProcessInfo.processInfo.operatingSystemVersion) -> Bool {
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let running = "\(current.majorVersion).\(current.minorVersion).\(current.patchVersion)"
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return !isNewer(minimum, than: running)
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}
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private static func components(_ version: String) -> [Int] {
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version.split(whereSeparator: { !$0.isNumber }).map { Int($0) ?? 0 }
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}
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}
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