4.1

1 files changed, 50 insertions, 0 deletions

diff --git a/zen/dir_watcher.h b/zen/dir_watcher.h
new file mode 100644
index 00000000..df3c444c
--- /dev/null
+++ b/zen/dir_watcher.h
@@ -0,0 +1,50 @@
+// **************************************************************************
+// * This file is part of the FreeFileSync project. It is distributed under *
+// * GNU General Public License: http://www.gnu.org/licenses/gpl.html       *
+// * Copyright (C) 2008-2011 ZenJu (zhnmju123 AT gmx.de)                    *
+// **************************************************************************
+
+#ifndef DIR_WATCHER_348577025748023458
+#define DIR_WATCHER_348577025748023458
+
+#include <vector>
+#include <memory>
+#include "file_error.h"
+
+namespace zen
+{
+//Windows: ReadDirectoryChangesW http://msdn.microsoft.com/en-us/library/aa365465(v=vs.85).aspx
+//Linux:   inotify               http://linux.die.net/man/7/inotify
+
+//watch directory including subdirectories
+/*
+!Note handling of directories!:
+    Linux: newly added subdirectories are reported but not automatically added for watching! -> reset Dirwatcher!
+	       removal of top watched directory is NOT notified!
+    Windows: removal of top watched directory also NOT notified (e.g. brute force usb stick removal)
+	         however manual unmount IS notified (e.g. usb stick removal, then re-insert), but watching is stopped!
+			 Renaming of top watched directory handled incorrectly: Not notified(!) + changes in subfolders
+			 report FILE_ACTION_MODIFIED for directory (check that should prevent this fails!)
+
+	Overcome all issues portably: check existence of watched directory externally + reinstall watch after changes in directory structure (added directories) are possible
+*/
+class DirWatcher
+{
+public:
+    DirWatcher(const Zstring& directory); //throw FileError, ErrorNotExisting
+    ~DirWatcher();
+
+    //extract accumulated changes since last call
+    std::vector<Zstring> getChanges(); //throw FileError
+
+private:
+    DirWatcher(const DirWatcher&);
+    DirWatcher& operator=(const DirWatcher&);
+
+    struct Pimpl;
+    std::unique_ptr<Pimpl> pimpl_;
+};
+
+}
+
+#endif