I am trying to get some clarity on Perl's ability to rename non-ascii files. I would like to rename only non-ascii files in a directory that contains ascii and non-ascii filenames.

However, I am finding that with the standard Perl rename(oldfilename, newfilename) I recieve a "Permission Denied at <STDIN> line xxx" where xxx is the line containing the rename command. This error only appears when Perl attempts to rename a non-ascii filename.

Using the bactick rename: `rename \"oldfilename\" \"newfilename\"` the program seems to work with the caveat that Perl sees the non-ascii filenames as question marks ????? ????? and seems to find multiple duplicates and cannot rename all found. Error: Duplicate filename or file cannot be found.

Here is my code, I have many versions but this is my latest: 

my $count = 1;
print "Path to directory for renaming:\n";
chomp($dirname = <STDIN>);
chdir $dirname or die "Cannot change to $dirname";
opendir(DIR, $dirname) or die "Cannot open $dirname";

while($myfile = readdir(DIR))
{
  $locate = telldir(DIR);
  if($myfile !~ m/[\?]+/gi)
  {
    print "$myfile: File is ascii\n";
  }
  elsif($myfile =~ m/[\? ]+(\([0-9]+\))?\.(\w+)\i)  #catches filenames
+ ???.txt or ????(2).txt 
  {
    $count++;
    print "$myfile: File is non-ascii\n";
    $ext = $2;
    $temp = "Non-Ascii_Filename_$count";
    $newname = join "." $temp, $ext;
    rename($myfile, $newname) or warn $!;
    #rename \"$myfile\" \"$newname\"; #attempt with backtics
  }
  seekdir(DIR, $locate);
}
closedir(DIR);

[download]
Build: Active Perl v5.8.4
System: Windows XP Pro
Is there a better way to achieve the renaming of files, as neither of these methods are effective?
Thanks in advance.
john

In reply to Renaming non-ascii files by jon12

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • 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, details, 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, summary, 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:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.