Contributed by jjdraco
on Aug 30, 2002 at 06:57 UTC
Q&A
> files
Description: im currently trying to teach myself perl, i'm working on a script to read a given directory and rename all the files in the directory to the format dir####.ext where dir is the directory name and #### is 0000 through 9999. i've read the list of files in to an array called @file_list but i wanted to filter out any directory, which i was able to do, however i ran across a problem, there was a hidden file in the directory, and i don't want to rename it, i found a way to not rename this file, but i would prefere a more generalized way of doing this, my code for reading the directory is this
@file_list= grep {!/Thumbs.db/ && -f "$_" } readdir(DIR);
is there away to just filter hidden files?
thanks for the help
jjdraco Answer: filtering hidden files on Win32 contributed by BrowserUk The following snippet will do what you want.
#!perl -w
use strict;
use Cwd;
use Win32::File qw(GetAttributes);
use constant HIDDEN => 2;
my $attribs;
my $dir = cwd();
print $dir,$/;
opendir( DIR, $dir ) or die "Couldn't open $main::DIR: $!\n";
my @vis_files = grep { -f $dir.'/'.$_ and GetAttributes($_, $attrib
+s) and not ($attribs & HIDDEN) } readdir(DIR);
closedir( DIR ) or warn "Couldn't close $main::DIR: $!\n";
print $_, $/ for @vis_files;
Now, I KNOW I shouldn't have to be defining my own HIDDEN constant, as this and all the others are apparently exported into main by Win32::File.
However, I have tried everything to use these exported constants including:
- HIDDEN
- $HIDDEN
- Win32::File::HIDDEN
- $Win32::File::HIDDEN
and either get 'bareword; noises, or if I turn off strict 'not numeric' noises.
I also investingated Win32::File.pm and whilst there is a qw( list ) of the constant names exported, I can see nowhere where they aquire any values?
Anyone who can explain
- How to use them?
- How they (are meant) to aquire values
Will earn the customary ++ and my grateful thanks. | Answer: filtering hidden files on Win32 contributed by Mr. Muskrat Same basic code... just a few tweaks here and there to get the constant working.
#!perl -w
use strict;
use Cwd;
use Win32::File;
my $attribs;
my $dir = cwd();
print $dir,$/;
opendir( DIR, $dir ) or die "Couldn't open $main::DIR: $!\n";
my @vis_files = grep { -f $dir.'/'.$_ and
Win32::File::GetAttributes($_, $attribs) and
!($attribs & HIDDEN) } readdir(DIR);
closedir( DIR ) or warn "Couldn't close $main::DIR: $!\n";
print $_, $/ for @vis_files;
|
Please (register and) log in if you wish to add an answer
Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
Read Where should I post X? if you're not absolutely sure you're posting in the right place.
Please read these before you post! —
Posts may use any of the Perl Monks Approved HTML tags:
- a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
|
For: |
|
Use: |
| & | | & |
| < | | < |
| > | | > |
| [ | | [ |
| ] | | ] |
Link using PerlMonks shortcuts! What shortcuts can I use for linking?
See Writeup Formatting Tips and other pages linked from there for more info.
|
Log In?
|
|
Chatterbox?
|
How do I use this? | Other CB clients
|
Other Users?
|
Others scrutinizing the Monastery: (5) As of 2021-02-28 16:56 GMT
|
Sections?
|
|
Information?
|
|
Find Nodes?
|
|
Leftovers?
|
|
Voting Booth?
|
No recent polls found
|
Notices?
|
|
|