Re: Reading from the "almost end" of a file
Re: Reading from the "almost end" of a file
- Subject: Re: Reading from the "almost end" of a file
- From: Yann Bizeul <email@hidden>
- Date: Wed, 18 Feb 2004 08:03:23 +0100
Why not just use popen() and the tail program ?
Because :
1/ I don't want to spread tail processes on the machine
2/ Tail thinks it is smart enough to drop special chars like \r, or \t,
or anything else that is not alphanumeric, but I don't want it to !
Thanks
Hi list,
I would like to use NSFileHandle to reproduce the behavior of tail in
terminal.
As seen in the list, what I did and is working is opening the file,
and set a 10ms NSTimer to get availableData on the NSFileHandle.
That's
perfect, and not CPU intensive as I thought.
Actually, I do this :
fh = [ NSFileHandle fileHandleForReadingAtPath: [ self file ]];
int offset = [ fh seekToEndOfFile ];
[ fh closeFile ];
fh = [[ NSFileHandle fileHandleForReadingAtPath: [ self file ]]
retain ];
offset = (offset - 2000);
if (offset < 0) offset=0;
[ fh seekToFileOffset: offset];
But it does not seek to the 2000th byte before the end but directly to
the end of the file.
What's the good way to do this, is there a quick way to say "from 10th
*line* of the file before the end"
Thank you
--
Yann Bizeul - yann at tynsoe.org
http://projects.tynsoe.org/
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--
Yann Bizeul - yann at tynsoe.org
http://projects.tynsoe.org/
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