GEEKING

RobloxStudio/filewatcher/FileWatcherLinux.h

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+/**
+	Implementation header file for Linux based on inotify.
+
+	@author James Wynn
+	@date 4/15/2009
+
+	Copyright (c) 2009 James Wynn (james@jameswynn.com)
+
+	Permission is hereby granted, free of charge, to any person obtaining a copy
+	of this software and associated documentation files (the "Software"), to deal
+	in the Software without restriction, including without limitation the rights
+	to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+	copies of the Software, and to permit persons to whom the Software is
+	furnished to do so, subject to the following conditions:
+
+	The above copyright notice and this permission notice shall be included in
+	all copies or substantial portions of the Software.
+
+	THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+	IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+	FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+	AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+	LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+	OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+	THE SOFTWARE.
+*/
+#ifndef _FW_FILEWATCHERLINUX_H_
+#define _FW_FILEWATCHERLINUX_H_
+#pragma once
+
+#include "FileWatcherImpl.h"
+
+#if FILEWATCHER_PLATFORM == FILEWATCHER_PLATFORM_LINUX
+
+#include <map>
+#include <sys/types.h>
+
+namespace FW
+{
+	/// Implementation for Linux based on inotify.
+	/// @class FileWatcherLinux
+	class FileWatcherLinux : public FileWatcherImpl
+	{
+	public:
+		/// type for a map from WatchID to WatchStruct pointer
+		typedef std::map<WatchID, WatchStruct*> WatchMap;
+
+	public:
+		///
+		///
+		FileWatcherLinux();
+
+		///
+		///
+		virtual ~FileWatcherLinux();
+
+		/// Add a directory watch
+		/// @exception FileNotFoundException Thrown when the requested directory does not exist
+		WatchID addWatch(const String& directory, FileWatchListener* watcher, bool includeSubfolders);
+
+		/// Remove a directory watch. This is a brute force lazy search O(nlogn).
+		void removeWatch(const String& directory);
+
+		/// Remove a directory watch. This is a map lookup O(logn).
+		void removeWatch(WatchID watchid);
+
+		/// Updates the watcher. Must be called often.
+		void update();
+
+		/// Handles the action
+		void handleAction(WatchStruct* watch, const String& filename, unsigned long action);
+
+	private:
+		/// Map of WatchID to WatchStruct pointers
+		WatchMap mWatches;
+		/// The last watchid
+		WatchID mLastWatchID;
+		/// inotify file descriptor
+		int mFD;
+		/// time out data
+		struct timeval mTimeOut;
+		/// File descriptor set
+		fd_set mDescriptorSet;
+
+	};//end FileWatcherLinux
+
+};//namespace FW
+
+#endif//FILEWATCHER_PLATFORM_LINUX
+
+#endif//_FW_FILEWATCHERLINUX_H_