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comp.lang.python

how to resolve Windows pathnames into cygwin ones

mgierdal@gmail.com

1/18/2008 4:11:00 PM

I am looking for a function to resolve 'F:/foo/bar' into '/cygdrive/f/
foo/bar'. I get the original dirpath from tkFileDialog.askdirectory in
a Windows form and none of os.path.* functions seem to resolve it to a
cygwin form. Rather they _append_ it to the current directory,
resulting at best in a monster '/cygdrive/c/whatever/f/foo/bar'.
It's all being developed under cygwin currently (so it is a kind of
mixed environment), but I would like the fix to work correctly in any
environment.

Thanks,
Marcin
6 Answers

Gerhard Häring

1/18/2008 4:42:00 PM

0

mgierdal@gmail.com wrote:
> I am looking for a function to resolve 'F:/foo/bar' into '/cygdrive/f/
> foo/bar'. I get the original dirpath from tkFileDialog.askdirectory in
> a Windows form and none of os.path.* functions seem to resolve it to a
> cygwin form. Rather they _append_ it to the current directory,
> resulting at best in a monster '/cygdrive/c/whatever/f/foo/bar'.
> It's all being developed under cygwin currently (so it is a kind of
> mixed environment), but I would like the fix to work correctly in any
> environment.

You can call the cygpath utility:

>>> import commands
>>> commands.getoutput("cygpath c:/windows")
'/c/windows'

-- Gerhard

apatheticagnostic

1/18/2008 4:44:00 PM

0

On Jan 18, 11:10 am, "mgier...@gmail.com" <mgier...@gmail.com> wrote:
> I am looking for a function to resolve 'F:/foo/bar' into '/cygdrive/f/
> foo/bar'. I get the original dirpath from tkFileDialog.askdirectory in
> a Windows form and none of os.path.* functions seem to resolve it to a
> cygwin form. Rather they _append_ it to the current directory,
> resulting at best in a monster '/cygdrive/c/whatever/f/foo/bar'.
> It's all being developed under cygwin currently (so it is a kind of
> mixed environment), but I would like the fix to work correctly in any
> environment.
>
> Thanks,
> Marcin

Well, you could write it yourself....

(assuming path is a string, here's a first go at it...)
def path_into_cygpath(path):
drive, destination = path.split(':')
newpath = '/cygdrive/' + drive.lower() + destination
return newpath

Grant Edwards

1/18/2008 4:49:00 PM

0

On 2008-01-18, apatheticagnostic <apatheticagnostic@gmail.com> wrote:
> On Jan 18, 11:10 am, "mgier...@gmail.com" <mgier...@gmail.com> wrote:
>> I am looking for a function to resolve 'F:/foo/bar' into '/cygdrive/f/
>> foo/bar'. I get the original dirpath from tkFileDialog.askdirectory in
>> a Windows form and none of os.path.* functions seem to resolve it to a
>> cygwin form. Rather they _append_ it to the current directory,
>> resulting at best in a monster '/cygdrive/c/whatever/f/foo/bar'.
>> It's all being developed under cygwin currently (so it is a kind of
>> mixed environment), but I would like the fix to work correctly in any
>> environment.
>>
>> Thanks,
>> Marcin
>
> Well, you could write it yourself....
>
> (assuming path is a string, here's a first go at it...)
> def path_into_cygpath(path):
> drive, destination = path.split(':')
> newpath = '/cygdrive/' + drive.lower() + destination
> return newpath

Don't forget to convert backslashes into forward slashes.

--
Grant Edwards grante Yow! TONY RANDALL! Is YOUR
at life a PATIO of FUN??
visi.com

apatheticagnostic

1/18/2008 5:13:00 PM

0

On Jan 18, 11:48 am, Grant Edwards <gra...@visi.com> wrote:
> On 2008-01-18, apatheticagnostic <apatheticagnos...@gmail.com> wrote:
>
>
>
> > On Jan 18, 11:10 am, "mgier...@gmail.com" <mgier...@gmail.com> wrote:
> >> I am looking for a function to resolve 'F:/foo/bar' into '/cygdrive/f/
> >> foo/bar'. I get the original dirpath from tkFileDialog.askdirectory in
> >> a Windows form and none of os.path.* functions seem to resolve it to a
> >> cygwin form. Rather they _append_ it to the current directory,
> >> resulting at best in a monster '/cygdrive/c/whatever/f/foo/bar'.
> >> It's all being developed under cygwin currently (so it is a kind of
> >> mixed environment), but I would like the fix to work correctly in any
> >> environment.
>
> >> Thanks,
> >> Marcin
>
> > Well, you could write it yourself....
>
> > (assuming path is a string, here's a first go at it...)
> > def path_into_cygpath(path):
> > drive, destination = path.split(':')
> > newpath = '/cygdrive/' + drive.lower() + destination
> > return newpath
>
> Don't forget to convert backslashes into forward slashes.
>
> --
> Grant Edwards grante Yow! TONY RANDALL! Is YOUR
> at life a PATIO of FUN??
> visi.com

Whoops.

Here we go then (are forward slashes valid in a filename in windows?)
def path_into_cygpath(path):
drive, destination = path.replace('\\','/').split(':')
return '/cygdrive/' + drive.lower() + destination

Reedick, Andrew

1/18/2008 5:26:00 PM

0

> -----Original Message-----
> From: python-list-bounces+jr9445=att.com@python.org [mailto:python-
> list-bounces+jr9445=att.com@python.org] On Behalf Of
mgierdal@gmail.com
> Sent: Friday, January 18, 2008 11:11 AM
> To: python-list@python.org
> Subject: how to resolve Windows pathnames into cygwin ones
>
> I am looking for a function to resolve 'F:/foo/bar' into '/cygdrive/f/
> foo/bar'. I get the original dirpath from tkFileDialog.askdirectory in
> a Windows form and none of os.path.* functions seem to resolve it to a
> cygwin form. Rather they _append_ it to the current directory,
> resulting at best in a monster '/cygdrive/c/whatever/f/foo/bar'.
> It's all being developed under cygwin currently (so it is a kind of
> mixed environment), but I would like the fix to work correctly in any
> environment.
>

Firstly, '/cygdrive' is overrated. Cygwin will accept: 'ls c:\\foo'
and 'ls c:/foo'


s= 'f:\\foo\\bar'

print re.sub(r'\\', '/', s)

m = re.match('^(.):(.*)$', s)
print '/cygdrive/' + m.group(1) + re.sub(r'\\', '/', m.group(2))

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mgierdal@gmail.com

1/18/2008 8:14:00 PM

0

Well yes, I was hoping for a library function, but none provides it.
Thanks for the code. Works nicely.

On Jan 18, 12:12 pm, apatheticagnostic <apatheticagnos...@gmail.com>
wrote:
> Here we go then (are forward slashes valid in a filename in windows?)
> def path_into_cygpath(path):
> drive, destination = path.replace('\\','/').split(':')
> return '/cygdrive/' + drive.lower() + destination