Re: Windows paths in glob
- From: "szr" <szrRE@xxxxxxxxxxxxxxx>
- Date: Mon, 31 Mar 2008 00:16:27 -0700
Dmitry wrote:
OK, so there's a well-known difficulty with handling Windows-style
paths in glob: it doesn't like backslashes, nor does it like spaces.
One solution to that is to use Unix-style paths:
glob('C:\Documents and Settings\*'); # Doesn't work
glob('C:/Documents\ and\ Settings/*'); # Works
Problem is, the rest of Perl's built-in file-handling functionality
behaves the other way around. For instance, with -d:
-d 'C:\Documents and Settings'; # Works
-d 'C:/Documents\ and\ Settings'; # Doesn't work
Question: is there any way to use the same path string with glob and
with the rest of Perl, without having to convert them back and forth?
I find, just as in geenral under Win32, putting double quotes around the
path gets around problems like this:
C:\>perl -e "my @d = glob('"""C:/Documents and Settings"""/*'); print
qq{\n}, join(qq{\n}, @d), qq{\n};"
C:/Documents and Settings/Administrator
C:/Documents and Settings/All Users
[...]
*** Note that """, when used in a double quoted string, under the
cmd.exe shell yields a literal ", so the glob statement is effectively:
glob('"C:/Documents and Settings"/*');
*** This is only because the command was run from the command line; in
an actual script you would of course use a normal double quote around
the path (just like in the linux examples below.)
And this works for tests like -d as well:
C:\>perl -e "print int (-d """C:/Documents and Settings""")"
1
C:\>perl -e "print int (-d """C:/123Documents and Settings""")"
0
And this form works under linux as well:
$ perl -e 'my @d = glob(q{"/mnt/samba/win_hd/Documents and
Settings"/*}); print qq{\n}, join(qq{\n}, @d), qq{\n};'
/mnt/samba/win_hd/Documents and Settings/Administrator
/mnt/samba/win_hd/Documents and Settings/All Users
$ perl -e 'print int (-d "/mnt/samba/win_hd/Documents and Settings")'
1
$ perl -e 'print int (-d "/mnt/samba/win_hd/123Documents and Settings")'
0
This was tested under ActivePerl 5.6.1 and 5.8.7, and under linux using
5.10.0, 5.8.8, and 5.6.1.
So if you want to do it in a way that works on most platforms (at the
very least windows and *nix),
1) Use a forward slash, not a back slash, as a path delimiter.
I.E., C:/path to/somewhere/file.ext, and
2) Surround the path with quotes.
I.E., "C:/path to/somewhere/a long filename.ext", or
"C:/path to/somewhere"/file.ext, or
"C:/Documents and Settings/"
and you should be fine.
Hope this helps.
--
szr
.
- References:
- Windows paths in glob
- From: Dmitry
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