module Jangle
  module StringReplacer
    # An array of [to_replace, replacement] pairs, used to
    # replace strings within the request body.
    attr_accessor :replacements
    
    # Always returns a string, converting nil data into ''
    def do_replacements(data)
      unless data.nil?
        @replacements.each do |to_replace, replacement|
          data = data.gsub(to_replace, replacement)
        end
      else
        data = ''
      end
      data
    end
    
  end
end