#!C:/Perl/bin -w
use strict;
use vars qw ( @old $old %data $sec $min $hour $mday $mon $year $etime );
use Time::Local qw (timelocal);

# create hash to hold filename and $etime with a fake key  
# and value -- both to be deleted after the foreach on DATA

%data = ( "file", 0 );

@old = <DATA>;
foreach $old(@old) {
   if ( $old =~ /    # 1 of many ways. For clarity, not elegance
      ^              # start at beginning of line
      [MTWFS]        # Any one UpperCase first_letter_of_day_of_week (english)
      [a-z]{2}       # Any lowercase letter, 2 times exactly
      \s             # One whitespace char
      ([A-Za-z]{3})  # UC or lc in range A-Z or a-z, 3 times -- CAPTURE month $1
      \s             # One whitespace char
      ([\d]{1,2})    # one or two digits - day_of_month -- capture day_of_month $2
      \s             # One whitespace char
      ([\d]{1,2}):   # Any dec dgt or :, 1 OR 2 times -- CAPTURE Hour $3 - fol by :
      ([\d]{2}):     # Any dec dgt or :,  2 times -- CAPTURE Min $4- fol by :
      ([\d]{2})\s    # Any dec dgt or :, 2 times -- CAPTURE Sec $5 - fol by sp
      [ECMP][SD]T    # Eastern, Central...Std or Day...T 
      \s             # One whitespace
      (200\d)        # One whitespace fol by "200" and 1 more dgt CAPTURE Yr $6
      .* /x          # anything_except_\n to end_of_record,  end m//, extended syntax
      )              # end condition
    {                # begin action block
         $sec = $5;
         $min = $4;
         $hour = $3;
         $mday = ( $2 - 1 );      # mday is in range 0-30 for timelocal
         $mon = $1;               # needs to be in 0..11 form: &convert_month
         $year = $6;              # ?! timelocal years are years - 1900

         &cvrt_mon_lcl($mon);

         # etime from $old form to Epoch seconds
         $etime = timelocal($sec, $min, $hour, $mday, $mon, $year);  

         chomp ($old);              # clean \n off $old. 
         $old =~ s/is : / /;        # shorten to DateTime:depth 

         # print "\$etime for \"$old\"|| \t$etime\n";   

         $data{$old}= $etime;  #  PUSH etime to the hash

   } else {
        print "no match \n";
   }
}
# NOW, delete the (fake) elements with which we initialized the hash
 
delete $data{"file"};

# NEXT convert current time to seconds since EPOCH

my $now = time();

# ASSESS the DATA elements for > or < 45 days old

 while (($old, $etime) = each %data) {

   if ( ($now - $etime) > (24*60*60*45) ) {      # 24hr*60min*60sec*45 days
      print " \"$old\" -  is MORE than 45 days old\n";
      print "\t It's roughly ".int(($now-$etime)/86400)." days old\n\n";


   } else {       # This  errs in favor of "LESS THAN" (no == test above)
      print " \"$old\" -  is LESS than 45 days old\n";
      print "\t It's only about ".int(($now-$etime)/86400)." days old\n\n";
   }
}

exit;

##### sub cvrt_mon_lcl  -- FOR timelocal and localtime; gmtime is different!

sub cvrt_mon_lcl {
    if ($mon eq "Dec") {
       $mon = 11;

    }elsif ($mon eq "Nov") {
       $mon = 10;
    }elsif ($mon eq "Oct") {
       $mon = 9;
    }elsif ($mon eq "Sep") {
       $mon = 8;
    }elsif ($mon eq "Aug") {
       $mon = 7;
    }elsif ($mon eq "Jul") {
       $mon = 6;
    }elsif ($mon eq "Jun") {
       $mon = 5;
    }elsif ($mon eq "May") {
       $mon = 4;
    }elsif ($mon eq "Apr") {
       $mon = 3;
    }elsif ($mon eq "Mar") {
       $mon = 2;
    }elsif ($mon eq "Feb") {
       $mon = 1;</readmore>
    }elsif ($mon eq "Jan") {
       $mon = 0;
    }
    return($mon);
}