#!perl
# rename.pl [dir1]...[dir##]
# takes a list of directorys as parameters
# renames all files in given directory to dir####
# not sure if it will run on other OS besides Win32
# by Joseph Jones <jjdraco@acsalaska.net>


use strict;
use warnings;
use Win32::File;
use Cwd;

#
# global Variables
#
my @Dir_List;

#
# Subroutines
#
sub dir_list
{

   #
   # gets the list of directories from @ARGV
   # stores directory list in @Dir_List
   # need to put in error handling to check for invalid directory name
+s
   #
   my $count = @_;    # gets length of @ARGV

   if ($count == 0) { die "No arguments where passed"; }

   # dies if no args where passed

   foreach my $item (@_)    #pushes list of directorys on to array
   {
      push (@Dir_List, $item);
   }
}    # end of sub dir_list

sub scan_dir
{

   # gets passes a name of a directory
   # goes through all files in that directory and renames them
   my (@file_list, @files_good, @rename_files, $file_name, $dir, $attr
+ibs);
   $file_name = $_[0];                 #name of directoyr will be name
+ of file
   $file_name = ucfirst $file_name;    #make sure $file_name is capita
+lized

   #gets current directory and changes to new directory
   $dir = cwd();
   $dir .= '/' . $file_name;
   chdir($dir);

   opendir(DIR, $dir) or die "unable to open directory";

   @file_list = grep {    # filters out hidden files and directories
                          # stores directory list in @file_list
      -f $dir . '/' . $_
        && Win32::File::GetAttributes($_, $attribs)
        && !($attribs & HIDDEN)
   } readdir(DIR);

   foreach
     my $item (@file_list)    # find out which files have already been
+ renamed
   {
      if ($item =~ /^$file_name[0000-9999]/)
      {                       #list of files that have been renambed
         push (@files_good, $item);
      } else
      {                       #list of files that need to be renamed
         push (@rename_files, $item);
      }
   }

   @files_good = sort @files_good;

   foreach
     my $item (@rename_files)    # goes through list of files and rena
+mes them
   {
      my ($newname, $count);
      $count   = "0001";                # appended to end of $file_nam
+e
      $newname = $file_name . $count;
      foreach
        my $item2 (@files_good)    # checks to see if $file_name.$coun
+t already
      {                            # exists in @files_good

         ++$count
           if ($item2 =~ /$newname/);    # if file exist goes to next 
+possible
         $newname = $file_name . $count;
      }    # file name $file_name.$count+1
      $item =~ /(gif|jpg|jpe|jpeg|bmp)$/;    # finds the file extentio
+n
      $newname = $newname . "\." . $1;       # and appends it to $newn
+ame
      push (@files_good, $newname);    # pushes $newname on to list so
+ when
                                       # it looks for next availible n
+ame
                                       # it knows this name is already
+ taken
      @files_good = sort @files_good;
      print "renaming $item to $newname\n";
      system("ren \"$item\" \"$newname\"");
   }

   closedir(DIR);
   chdir("..");
}

&dir_list(@ARGV);

foreach my $item (@Dir_List)
{
   print "\n\n$item directory***********************\n\n";
   &scan_dir($item);
}

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