fsevents_monitor.hpp

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/*
 * Copyright (c) 2014-2025 Enrico M. Crisostomo
 *
 * This program is free software; you can redistribute it and/or modify it under
 * the terms of the GNU General Public License as published by the Free Software
 * Foundation; either version 3, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
 * details.
 *
 * You should have received a copy of the GNU General Public License along with
 * this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
#ifndef FSW_FSEVENT_MONITOR_H
#  define FSW_FSEVENT_MONITOR_H
 
#  include "monitor.hpp"
#  include <CoreServices/CoreServices.h>
#  include <memory>
 
namespace fsw
{
  class fsevents_monitor : public monitor
  {
  public:

    static constexpr const char *DARWIN_EVENTSTREAM_NO_DEFER = "darwin.eventStream.noDefer";

    fsevents_monitor(std::vector<std::string> paths,
                     FSW_EVENT_CALLBACK *callback,
                     void *context = nullptr);
    ~fsevents_monitor() override;
    fsevents_monitor(const fsevents_monitor& orig) = delete;
    fsevents_monitor& operator=(const fsevents_monitor& that) = delete;
 
  protected:
    void run() override;

    void on_stop() override;
 
  private:
    class Impl;
    std::unique_ptr<Impl> pImpl;
    
    static void fsevents_callback(ConstFSEventStreamRef streamRef,
                                  void *clientCallBackInfo,
                                  size_t numEvents,
                                  void *eventPaths,
                                  const FSEventStreamEventFlags eventFlags[],
                                  const FSEventStreamEventId eventIds[]);
 
    bool no_defer();
    static CFArrayRef copy_cf_paths(const std::vector<std::string>& paths);
    void create_stream(CFArrayRef pathsToWatch);
  };
}
 
#endif  /* FSW_FSEVENT_MONITOR_H */