[fpc-pascal] read lines at end of file
wolfe.robwolfe at gmail.com
Tue Apr 12 01:09:34 CEST 2011
On 04/11/2011 12:32 PM, John Lee wrote:
> Need to read the last 4 lines (txt) of a very large log file 100M
> bytes, 100k lines or more lots of times - of course I can read
> through the file in the normal way but this is rather slow. Is there a
> way to 'read lines from the end'? I note that unix tail or its port to
> windows does this very fast so guess there must be a fast way to do it
> in pascal too?
> TIA for any ideas John
> fpc-pascal maillist - fpc-pascal at lists.freepascal.org
Hmm, could first have the reader enumerate the number of lines in the
file, then read through the files using the "total number of lines - 4"
variable and then start displaying the lines after that variable has
been reached. If necessary, I would be happy to see what I can come up
with here and then post it to the mailing list.
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