unzip, find broken by auto handling of .exe file extension
Stephen Anderson
stephen.rhoderson@gmail.com
Fri Sep 2 20:20:00 GMT 2016
Thanks for looking at the problem.
Unfortunately not resolved...
1. As demonstrated by the provided ruby test case, it is very possible to
have a directory and base filename be the same. Open bash and try it.
$ mkdir mything
$ touch mything.exe
$ ls mything*
mything.exe
mything:
$
2. Even if cygwin somehow prevented it (it can't), zip archives do not
preclude the presence of a base filename with exe extension and same
directory name.
3. The problem is not simply exe - batch files (.bat, .cmd), powershell
(.ps1) and others are automatically picked up by cmd.exe processing, and can
all have common base names.
4. I tried unzip -x and it does not workaround the problem. 7z remains my
workaround and the only one I have found so far.
5. Terminating the find -path with / results in 'find: warning: -path
testAutoExeExpansion/test/ will not match anything because it ends with /'.
6. Terminating the target with / does not help.
7. Rmdir fails with 'directory not empty'.
8. I am NOT trying to run the executable, so the globbing should NOT
automatically be expanding 'test' to match 'test.exe'.
I would think that the only utilities that really should do that would be
'which', 'whereis' or shell command completion (not file completion).
Attached updated test case.
sja
-----Original Message-----
From: cyg Simple
Sent: Friday, September 02, 2016 2:40 PM
To: cygwin@cygwin.com
Subject: Re: unzip, find broken by auto handling of .exe file extension
On 9/1/2016 12:00 PM, Stephen Anderson wrote:
> I am in the process of importing zip archive contents into an SVN repo
> and have encountered problems when unzip-6.00 expands an archive
> containing an executable file in a directory that contains a
> subdirectory with the same base name as the executable. If the
> executable happens to occur after the subdirectory, unzip works, however
> if the executable is first, unzip fails with the error:
>
> checkdir error: testAutoExeExpansion/test exists but is not directory
> unable to process testAutoExeExpansion/test/.
>
How can a directory and a file of the same name exist? It can't and
because Cygwin stats the foo.exe to be foo then that is the filename
comparison.
> Luckily I am able to use 7z extract, which does not exhibit the unzip
> problem and even allows me to exclude the culprit subdirectory (which
> luckily contains nothing I am interested in).
>
Unzip has the -x option to exclude archive items.
> In the process of trying to solve this problem, I used find-4.6.0 to try
> and delete the subdirectory after extracting with 7z to no avail.
> Even preceding the path match with a type directory spec find gets
> confused (so did the svn commit BTW).
>
Did you trail the name with / for the delete? The rmdir command should
work. You would use the -exec option with find to execute rmdir rather
than the delete function of find.
> The enclosed ruby unit test reproduces the minimal circumstances of the
> issue for both unzip and find.
> It is likely that this is a common problem somewhere in the bowels of
> file 'globbing' in cygwin only.
>
Yes and one that allows the stat of foo.exe by foo only so that it can
launch the application. It has existed since the beginning of Cygwin
and I doubt it will ever be resolved without requiring the full file
name for executables.
--
cyg Simple
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