31 lines
1.2 KiB
Swift
31 lines
1.2 KiB
Swift
import Foundation
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/// Time Machine 本地快照的删除命令。辅助工具与未安装辅助工具时的授权回退共用同一份参数校验：
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/// 快照只能用形如 2026-09-14-120000 的时间标识指定，不接受任何其他字符
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public enum LocalSnapshotCommand {
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public static let tool = "/usr/bin/tmutil"
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public static let maxCount = 64
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public static func isValidIdentifier(_ identifier: String) -> Bool {
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let scalars = Array(identifier.unicodeScalars)
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guard scalars.count == 17 else { return false }
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for (index, scalar) in scalars.enumerated() {
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if index == 4 || index == 7 || index == 10 {
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guard scalar == "-" else { return false }
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} else {
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guard ("0"..."9").contains(scalar) else { return false }
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}
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}
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return true
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}
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public static func arguments(identifier: String) -> [String] {
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["deletelocalsnapshots", identifier]
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}
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/// 授权回退用的一整条 shell；调用前必须已用 isValidIdentifier 校验
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public static func shellCommand(identifiers: [String]) -> String {
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identifiers.map { "\(tool) deletelocalsnapshots \($0)" }.joined(separator: "; ")
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}
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}
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