src/string.rb

   1 #
   2 # Copyright Michael Orlitzky
   3 #
   4 # http://michael.orlitzky.com/
   5 #
   6 # This program is free software: you can redistribute it and/or modify
   7 # it under the terms of the GNU General Public License as published by
   8 # the Free Software Foundation, either version 3 of the License, or
   9 # (at your option) any later version.
  10 #
  11 # This program is distributed in the hope that it will be useful,
  12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  14 # GNU General Public License for more details.
  15 #
  16 # http://www.fsf.org/licensing/licenses/gpl.html
  17 #
  18
  19 # Augment the String class with a (left) pad method
  20 class String
  21   def pad_left(pad_char, to_length)
  22     chars_to_pad = to_length - self.length
  23
  24     if chars_to_pad <= 0 then
  25       # Don't do anything if the string is already long enough
  26       return self
  27     else
  28       return (pad_char * chars_to_pad) + self
  29     end
  30   end
  31 end