CODEWITHSUNDEEP
objective-cmacosfilefsevents
Nisar Ahmed
Nisar Ahmed

Reputation: 67

How to determine if a file copy is completed using cocoa

I am developing folder watcher application for MAC in XCode using Foundation framework and FSEvents API. I need to know whether the file has been completely copied to the destination before I open the file for other operation. Is there any way of knowing it? please advice

Upvotes: 2

Views: 665

Answers (3)

Danil Korotenko
Danil Korotenko

Reputation: 21

I noticed that FSEvents API sends "create" event at beginning and "create-and-modify" at the end. On my project I used FSEventsStream with zero latency, and "NoDefer" flag on creation. Watching for "Modify" only events may give you information that file copy is completed.

Upvotes: 2

herzbube
herzbube

Reputation: 13378

From simply studying the FSEvents API I would say that what you want is not possible. I could be mistaken, though, I have never used FSEvents myself. The asker of this question has solved the problem by separately monitoring the new file with lsof.

Upvotes: 0

Prashant Bhayani
Prashant Bhayani

Reputation: 692

you can check that whether the file you want to open is exist or not? and act accordingly.

Upvotes: 0

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