use File::Basename;
$OK = 'c:\temp\test\test1\test2'; #Single quotes avoids double slashes
print dirname $OK;
>From the Camel book (it only takes a minute to look up stuff like this):
7.2.27 File::Basename - Parse File Specifications
use File::Basename;
($name, $path, $suffix) = fileparse($fullname, @suffixlist)
fileparse_set_fstype($os_string); # $os_string specifies OS type
$basename = basename($fullname, @suffixlist);
$dirname = dirname($fullname);
($name, $path, $suffix) = fileparse("lib/File/Basename.pm", '\.pm');
fileparse_set_fstype("VMS");
$basename = basename("lib/File/Basename.pm", ".pm");
$dirname = dirname("lib/File/Basename.pm");
These routines allow you to parse file specifications into useful pieces
using the syntax of different operating systems.
fileparse_set_fstype
You select the syntax via the routine fileparse_set_fstype(). If the argument
passed to it contains one of the substrings "VMS", "MSDOS", or "MacOS", the
file specification syntax of that operating system is used in future calls to
fileparse(), basename(), and dirname(). If it contains none of these
substrings, UNIX syntax is used. This pattern matching is case-insensitive.
If you've selected VMS syntax and the file specification you pass to one of
these routines contains a /, it assumes you are using UNIX emulation and
applies the UNIX syntax rules instead for that function call only. If you
haven't called fileparse_set_fstype(), the syntax is chosen by examining the
osname entry from the Config package according to these rules.
fileparse
The fileparse() routine divides a file specification into three parts: a
leading path, a file name, and a suffix. The path contains everything up to
and including the last directory separator in the input file specification.
The remainder of the input file specification is then divided into name and
suffix based on the optional patterns you specify in @suffixlist. Each
element of this list is interpreted as a regular expression, and is matched
against the end of name. If this succeeds, the matching portion of name is
removed and prepended to suffix. By proper use of @suffixlist, you can remove
file types or versions for examination. You are guaranteed that if you
concatenate path, name, and suffix together in that order, the result will be
identical to the input file specification. Using UNIX file syntax:
($name, $path, $suffix) = fileparse('/virgil/aeneid/draft.book7',
'\.book\d+');
would yield:
$name eq 'draft'
$path eq '/virgil/aeneid',
$suffix eq '.book7'
(Note that the suffix pattern is in single quotes. You'd have to double the
backslashes if you used double quotes, since double quotes do backslash
interpretation.) Similarly, using VMS syntax:
($name, $path, $suffix) = fileparse('Doc_Root:[Help]Rhetoric.Rnh', '\..*');
would yield:
$name eq 'Rhetoric'
$path eq 'Doc_Root:[Help]'
$suffix eq '.Rnh'
basename
The basename() routine returns the first element of the list produced by
calling fileparse() with the same arguments. It is provided for compatibility
with the UNIX shell command basename(1).
dirname
The dirname() routine returns the directory portion of the input file
specification. When using VMS or MacOS syntax, this is identical to the
second element of the list produced by calling fileparse() with the same
input file specification. When using UNIX or MS-DOS syntax, the return value
conforms to the behavior of the UNIX shell command dirname(1). This is
usually the same as the behavior of fileparse(), but differs in some cases.
For example, for the input file specification lib/, fileparse() considers the
directory name to be lib/, while dirname() considers the directory name to be
. (dot).
- Original Message -
From: "Carl Campbell" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]>
Sent: Friday, June 01, 2001 1:05 AM
Subject: RE: regular expression question
> Not really a regex approach but here is my submittion:
>
> $OK = "c:\\temp\\test\\test1\\test2";
> $your_answer = substr($OK, 0, rindex($OK, "\\"));
> # print $your_answer,"\n";
>
> -Original Message-
> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]
> Sent: Thursday, May 31, 2001 2:17 PM
> To: [EMAIL PROTECTED]
> Subject: regular expression question
>
>
> Dear all,
> I have a question about a regular expression, for example
> $OK = "c:\\temp\\test\\test1\\test2";
> How can I do to make me get
> $OK1 = "c:\\temp\\test\\test1";
> That means I do not want the last part of the directory.
> Thanks in advance!
>
> Lixin
> ___
> Perl-Win32-Users mailing list
> [EMAIL PROTECTED]
> http://listserv.ActiveState.com/mailman/listinfo/perl-win32-users
> ___
> Perl-Win32-Users mailing list
> [EMAIL PROTECTED]
> http://listserv.ActiveState.com/mailman/listinfo/perl-win32-users
>
___
Perl-Win32-Use
