Forum: Ruby File deletion failed -- how to handle problem?

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31fdda5f38fc6df4e193cfb7445ddc5a?d=identicon&s=25 Richard (Guest)
on 2006-03-30 07:04
(Received via mailing list)
Hi All,

I wrote a simple test a techiques I'll apply in an app I'm going start
shortly.  One thing my test did is: -- -- open a non-existent file for
-- populate it
-- close it
-- open it for reading, expecting automatic closure when reading ended
-- looped through file printing its line to STDOUT
-- attempted to delete the file -- got "Permission denied -
TestOutput.txt (Errno::EACCES)"

I tested it under SciTE.

The relevant code fragment is listed below.  I think the problem is
that the file is in the process of being closed by WindowsXP-Pro when
the delete request hits the OS and the OS complains.

If that's correct,  all I have to do is write some loop that naps and
re-attempts the deletion until successful.  Is there better approach,
or is my analysis wrong in the first place?

********* Code fragment ****************
puts "\nDisplaying the content of #{fno}:"
puts "Opening #{fno}'", "r") do |file|		# Open for reading
	while sLine = file.gets
		puts sLine
end # File will be closed automantically when scope of "do" exited
puts "#{fno} closed"

puts "\nDeleting #{fno}"

93d566cc26b230c553c197c4cd8ac6e4?d=identicon&s=25 Pit Capitain (Guest)
on 2006-03-31 13:21
(Received via mailing list)
Richard schrieb:
> ...
Richard, your code works for me, when I run it from the command line. I
haven't tried it with SciTE.

23172b6630dc631a134c9bad2fec2a39?d=identicon&s=25 ChrisH (Guest)
on 2006-03-31 16:50
(Received via mailing list)
Worked for me:

ruby 1.8.2 (2004-12-25) [i386-mswin32]
SciTE Version 1.59
Aee77dba395ece0a04c688b05b07cd63?d=identicon&s=25 Daniel Berger (Guest)
on 2006-03-31 18:04
(Received via mailing list)
Richard wrote:
> Hi All,


> 	end
> end # File will be closed automantically when scope of "do" exited
> puts "#{fno} closed"
> puts "\nDeleting #{fno}"
> File.delete(fno)
> *************************************************

It looks like you're passing around a fileno.  If that's the case, the
implication is that you've opened the filehandle somewhere else, but
haven't closed it.

Also, you're better off using IO.foreach(file) instead of the
block you've got there.


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