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https://github.com/LadybirdBrowser/ladybird.git
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2acbb811b1
This wrapper abstracts the watch_file setup and file handling, and allows using the watch_file events as part of the event loop via the Core::Notifier class. Also renames the existing DirectoryWatcher class to BlockingFileWatcher, and adds support for the Modified mode in this class.
81 lines
2.4 KiB
C++
81 lines
2.4 KiB
C++
/*
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* Copyright (c) 2020, Itamar S. <itamar8910@gmail.com>
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* Copyright (c) 2021, the SerenityOS developers.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#include <AK/Function.h>
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#include <AK/Noncopyable.h>
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#include <AK/NonnullRefPtr.h>
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#include <AK/RefCounted.h>
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#include <AK/Result.h>
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#include <AK/String.h>
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#include <LibCore/Notifier.h>
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namespace Core {
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struct FileWatcherEvent {
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enum class Type {
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Modified,
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ChildAdded,
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ChildRemoved,
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};
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Type type;
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String child_path;
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};
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class BlockingFileWatcher {
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AK_MAKE_NONCOPYABLE(BlockingFileWatcher);
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public:
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explicit BlockingFileWatcher(const String& path);
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~BlockingFileWatcher();
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Optional<FileWatcherEvent> wait_for_event();
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private:
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String m_path;
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int m_watcher_fd { -1 };
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};
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class FileWatcher : public RefCounted<FileWatcher> {
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AK_MAKE_NONCOPYABLE(FileWatcher);
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public:
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static Result<NonnullRefPtr<FileWatcher>, String> watch(const String& path);
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~FileWatcher();
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Function<void(FileWatcherEvent)> on_change;
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private:
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FileWatcher(NonnullRefPtr<Notifier>, const String& path);
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NonnullRefPtr<Notifier> m_notifier;
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String m_path;
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};
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}
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