bzr-explorer-dev team mailing list archive

[Gordon Tyler <gordon@xxxxxxxxx>]

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On 5/4/2011 8:31 AM, Alexander Belchenko wrote:
> I have one doubt though: if FileSystemWatcher looks into
> subdirectories then it will be triggered on any change inside .bzr
> directory. IIRC some read-only operations will create/delete lock
> dir/file inside .bzr. Therefore it will trigger false positive
> alarms, IIUC.

I suppose it would depend on the API that you're using to watch for
filesystem changes. There might be a way to make it ignore .bzr.

On a related note, it looks like QFileSystemWatcher, when watching a
directory, will not notify you if the files in that dir are modified,
only if the directory listing is changed (i.e. a file is added or
removed). You would have to make it watch specific files to see when
they change. This would get out of hand quite quickly for a large
directory tree. So you may have to write your own bridge to various
platform services like inotify, FindFirstChangeNotification and FSEvents.

Linux API: http://en.wikipedia.org/wiki/Inotify
Windows API: http://msdn.microsoft.com/en-us/library/aa365261
Mac OS X API:
http://developer.apple.com/library/mac/#documentation/Darwin/Conceptual/FSEvents_ProgGuide/Introduction/Introduction.html
<http://developer.apple.com/library/mac/#documentation/Darwin/Conceptual/FSEvents_ProgGuide/Introduction/Introduction.html#//apple_ref/doc/uid/TP40005289-CH1-DontLinkElementID_15>

Ciao,
Gordon
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