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/*
* Copyright (c) 2020, Itamar S. <itamar8910@gmail.com>
* Copyright (c) 2021, the SerenityOS developers.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include <AK/Function.h>
#include <AK/Noncopyable.h>
#include <AK/NonnullRefPtr.h>
#include <AK/RefCounted.h>
#include <AK/Result.h>
#include <AK/String.h>
#include <LibCore/Notifier.h>
namespace Core {
struct FileWatcherEvent {
enum class Type {
Modified,
ChildAdded,
ChildRemoved,
};
Type type;
String child_path;
};
class BlockingFileWatcher {
AK_MAKE_NONCOPYABLE(BlockingFileWatcher);
public:
explicit BlockingFileWatcher(const String& path);
~BlockingFileWatcher();
Optional<FileWatcherEvent> wait_for_event();
private:
String m_path;
int m_watcher_fd { -1 };
};
class FileWatcher : public RefCounted<FileWatcher> {
AK_MAKE_NONCOPYABLE(FileWatcher);
public:
static Result<NonnullRefPtr<FileWatcher>, String> watch(const String& path);
~FileWatcher();
Function<void(FileWatcherEvent)> on_change;
private:
FileWatcher(NonnullRefPtr<Notifier>, const String& path);
NonnullRefPtr<Notifier> m_notifier;
String m_path;
};
}
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