Cygwin + TempFile + Dir.chdir = failure


#1

I’m running ruby 1.8.5-3 for Cygwin under Win XP Pro SP 2. Here’s some
code:

require ‘tempfile’

Dir.chdir("./aDir") do
Tempfile.open(“johndoe”, “.”) do |f|
# Can be even empty
end
end

With this code, the temporary file in ./aDir will not be removed. Is
this a bug, a Cygwin/Windows “feature”, or what? How to get around
this thing?


#2

On 21.03.2007 11:48, vulpes wrote:

With this code, the temporary file in ./aDir will not be removed. Is
this a bug, a Cygwin/Windows “feature”, or what? How to get around
this thing?

If you do this it will be removed (regardless whether you use chdir or
not) - at least that’s the behavior I observe on my system:

Tempfile.open(“johndoe”, “/tmp”) do |f|
# Can be even empty
end

Basically the chdir isn’t needed anyway. It appears you hit a bug in
the stdlib: it seems to try to delete “./” but fails
because the file does not exist (remember that “.” points to a different
directory then).

I just had a quick check of the Tempfile code and it appears that no
attempts are made to get an absolute path. There is not a single
occurrence of expand_path in tempfile.rb.

The obvious workaround is to use an absolute path (see above).

Kind regards

robert


#3

On Mar 21, 6:57 am, Robert K. removed_email_address@domain.invalid wrote:

end
# Can be even empty

The obvious workaround is to use an absolute path (see above).

Looks like a bug to me. Please file it on the RubyForge tracker (and
the patch, too, if you’ve got one).

Thanks,

Dan


#4

Basically the chdir isn’t needed anyway. It appears you hit a bug in
the stdlib: it seems to try to delete “./” but fails
because the file does not exist (remember that “.” points to a different
directory then).

Point is that I encountered this while using RubyZip. If I’m trying to
edit a zip file in another directory with RubyZip, it is unable to
delete the temp file it creates. And there I have tried using absolute
paths, it doesn’t work.