How to get file access times in Haskell (cross-platform)?

Question

I'd like to read file access times in a portable way. I found accessTime in System.Posix.Files, but it's POSIX only. Is there a portable, cross-platform way that would work both on Windows and POSIX systems?

score 6 · Answer 1 · answered Apr 08 '13 at 08:16

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How about System.Directory.getModificationTime for modification time? For access time I'm not sure there is a portable way.

answered Apr 08 '13 at 08:16

augustss

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Unfortunately, I need primarily access time. – Petr Apr 08 '13 at 18:39

score 4 · Answer 2 · answered Apr 08 '13 at 08:01

4

On Windows you can use System.Win32.getFileTime function, second time - is last access time. How i know - no crossplatform way for this task.

answered Apr 08 '13 at 08:01

Ilya Rezvov

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score 2 · Answer 3 · answered Apr 08 '13 at 18:01

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You can use unix-compat to get both Windows and POSIX support for a lot of the functionality in the unix package.

answered Apr 08 '13 at 18:01

Michael Snoyman

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I almost rejoiced that the problem is solved so easily, but unfortunately, looking at the implementation of the portable part, it doesn't really read access time, [it just copies modification time into it](https://github.com/jystic/unix-compat/blob/master/src/System/PosixCompat/Files.hsc#L314). – Petr Apr 08 '13 at 18:38
Wow, that's too bad. I'm glad to know of that caveat at least. – Michael Snoyman Apr 09 '13 at 01:59

score 0 · Answer 4 · answered Mar 06 '20 at 07:59

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As of directory-1.2.3 there is now System.Directory.getAccessTime.

answered Mar 06 '20 at 07:59

Jens Petersen

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How to get file access times in Haskell (cross-platform)?

4 Answers4