CommandLineToolkit

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import Foundation
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public enum LaunchdSocketActivationError: CustomStringConvertible, Error {
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    public static let noSocket = LaunchdSocketActivationError.errorCode(ENOENT)
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    public static let notManagedByLaunchd = LaunchdSocketActivationError.errorCode(ESRCH)
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    public static let socketAlreadyActivated = LaunchdSocketActivationError.errorCode(EALREADY)
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    case errorCode(Int32)
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    public var description: String {
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        switch self {
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        case let .errorCode(code):
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            switch code {
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            case ENOENT:
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                return "There was no socket of the specified name owned by the caller"
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            case ESRCH:
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                return "The caller is not a process managed by launchd"
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            case EALREADY:
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                return "The socket has already been activated by the caller"
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            default:
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                return "Unknown error code: \(code)"
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            }
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        }
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    }
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}
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