stuartcarnie

// queries

query ::= statement ( ";" statement )*

statement  ::= alter_retention_policy_stmt |
                      create_continuous_query_stmt |
                      create_database_stmt |
                      create_retention_policy_stmt |
                      create_subscription_stmt |
                      create_user_stmt |

stuartcarnie

   Copyright 2020 Stuart Carnie

   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at

     http://www.apache.org/licenses/LICENSE-2.0

   Unless required by applicable law or agreed to in writing, software
   distributed under the License is distributed on an "AS IS" BASIS,

stuartcarnie

@available(macOS 10.15, *)
extension NSEvent {
    static func publisher(scope: Publisher.Scope, matching: EventTypeMask) -> Publisher {
        return Publisher(scope: scope, matching: matching)
    }
    
    public struct Publisher: Combine.Publisher {
        public enum Scope {
            case local, global
        }

stuartcarnie

// Place this early in your application's startup process, such as an init

let cb: CFNotificationCallback = { (centre: CFNotificationCenter?, observer: UnsafeMutableRawPointer?, name: CFNotificationName?, object: UnsafeRawPointer?, userInfo: CFDictionary?) in
    print("Notification: ", terminator: "")
    if let name = name {
        print("(\(name.rawValue)) ")
    } else {
        print()
    }