Given that you are using perl's readdir, and you are getting some sort of string as a result, you might want to try a little test script to show the actual byte values that are being used in the file names. Something like this would do -- and while we're at it, let's check to see if the string returned by readdir can actually be used to get information about the file and open it: 
#!/usr/bin/perl

use strict;
use warnings;

(@ARGV == 1 and -d $ARGV[0]) or die "Usage:  $0 pathname\n";

my $dir = shift;
opendir( DIR, $dir ) or die "$dir: $!";
while ( $_ = readdir DIR ) {
    next if ( /^\.\.?$/ );
    print join( " ", map { sprintf( " %02x", ord($_)) } split //, $_ )
+;
    if ( -f ) {
        open( I, $_ ) or do { warn "$_: $!"; next };
        my $sum = 0;
        $sum += length() while (<I>);
        close I;
        printf( " : %d bytes (%d read)\n", -s _, $sum );
    }
    elsif ( -d _ ) {
        print " : directory\n";
    }
    else {
        print " : not sure what this is\n"
    }
}

[download]
If you don't know how to use the information that comes out of that, post a reply with a few examples of the output for non-ASCII file names (look for lines containing hex numerics greater than " 7f ").

You might also want to take a bunch of these odd-ball file names (as fetched by readdir) and concatenate them (with spaces between them) into a single long string, and pass that to the "guess_encoding" function provided by Encode::Guess -- if the characters really are non-unicode Asian or some form of unicode, there's a good chance it'll give you a correct answer, which you can then use with Encode's "decode" function, to turn the strings into perl-internal utf8 (in case that's helpful for anything).

In reply to Re: Opening files with japanese/chinese chars in filename by graff
in thread Opening files with japanese/chinese chars in filename by Anonymous Monk

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