at first : 
my $file      = "@_" || die(sub_usage($funcName));

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and then, later , in sub_usage : 
die("\n\tThis function requires that you call ".

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where do you really want to die? :-)

Aside from this, I've always interpreted "base filename" and "extention" to be 2 particular and discrete things, so if you do have a file named foo.bar.baz.quux, you've got a base filename of "foo.bar.baz" and an extention of "quux"; do you have a particular need or use to split on every dot, or were you being (lowercase) lazy?

in any case, it really seems like you're doing too much work here. Additionally, I would not use any module that required me to declare a DEBUG variable (or constant, in this case) in my own package, but perhaps this could be addressed if you make your File::Basename::foo package. File::Basename::foo::DEBUG would be ok with me.

here's a AWTDI, using sexegers, for comparison.

use Carp;
($f, $e) = &sex_ext ($ARGV[0]);
print "fname : $f ; ext : $e\n";
sub sex_ext {
    local $_ = reverse $_[0] or 
        carp "no filename supplied to sex_ext!\n";
    #no period or ext found, return original arg
    return $_[0] unless /(.*?)\.(.+)/; 
    my $fname = reverse$2;
    my $ext= reverse $1;
    return ($fname, $ext);    
}

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Update : You could also reverse and split /./,$_,2 rather than use the regex in the unless line... so many ways... :-)

In reply to Re: Parse out the extension of a filename - return base of filename. (boo) by boo_radley
in thread Parse out the extension of a filename - return base of filename. by snafu

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