# cut2fmt part 2

sub cut2fmt2 {
  my(@positions) = @_;
  
  my $template = '';
  my $lastpos = 1;
  foreach $fld (@positions) {
    ($place,$len) = split(/-/,$fld);
    if ($lastpos<=$place) {
      $template .= "x" . ($place - $lastpos) . " ";
      $place += $len;
    }
    $template .= "A" . ($len) . " ";
    $lastpos = $place;
  }
  $template .= "A*";
  return $template;
  
}

# Pick out fields from a fixed length file record
# by defining start pos - len eg. 8-3 = get 3 Alpha char from posn 8.
# use the string this sub returns in your unpack (or pack!) statement.

$fmt = cut2fmt2("8-3","14-6","20-3","26-2","30-1");
print "$fmt\n";
# Returns: x7 A3 x3 A6 x0 A3 x3 A2 x2 A1 A*