Am trying to read directory/subdirectories and for files from a path recursively. Once file found in any directory, reading file content(usually just 1 line in a file) and substituting space with comma from the line. then I need to pass the values to another sub functions.

Problem : 1. line number 35 doesn't seems to be working. when i try to print $line, it doesn't show anything/value. 2. Need to pass @columns/@filenames/@dir_names to the sub function(&write_output) called in line number 46.

Can someone tell me where am doing wrong and help me out

I need to know is there any tool/utlity for Windows XP where in which in can run the perl script line by line debugging mode so, that i can see what's happen to the variables during run time.

#! /usr/bin/perl
use warnings;
use strict;
use File::Find;
use File::Basename;

my $base_dir = 'C:\Perl\TestData';
my (@columns,@dirs,@buf,@dir_names,@filenames);
my ($dir,$file,$resultxmlfile,$line,$fh);
$line='';

sub process_files
{
 print "dive into: $_[0]\n";
    opendir DIR, $_[0] or die "Could not open directory";
 print $_[0];
 print "\n";
    @dirs = readdir DIR;
    closedir DIR;
     foreach $file (@dirs) {
       if ($file =~ /\.{1,2}/) {next }
       print "processing: $file\n";
       if ( -d "$_[0]/$file" ) { 
        process_files ("$_[0]/$file");
        push(@dir_names, basename($file));
        print @dir_names;
        print "\n";
       foreach my $file (@dirs){
          print $file;
          next if $file eq '.' or $file eq '..';
          print "\n";
          open (FILE, "<", $file) or die "Could not open file -- $_[0]
+/$file";
          @buf = <FILE>;
            foreach $line (@buf) {
                $line = <FILE>; # this line doesn't work. don't know w
+hat's wrong here..
                $line=~ s/ /,/g;
                print $line;
                push(@columns,$line);
                print @columns;
                print "\n";
                $file =~ s/.*\///;
                $file =~ s/\.[^.]+$//;
                push(@filenames, $file);
                print @filenames;
            }
                &write_output; # need to pass @columns/@filenames/@dir
+_names values to this function
                close FILE;
        }
   
    }
  }
 
}

process_files $base_dir;
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