lib/common/user.rb

   1 require 'common/domain'
   2 require 'common/errors'
   3
   4 class User
   5   # A class representing a syntactically valid user; that is, an email
   6   # address. Once constructed, you can be sure that it's valid.
   7
   8   @localpart = nil
   9   @domain = nil
  10
  11   def domain()
  12     return @domain
  13   end
  14
  15   def domainpart()
  16     return @domain.to_s()
  17   end
  18
  19   def initialize(username)
  20     # Initialize this user object, but throw an error if either the
  21     # localpart or domainpart are invalid. The one argument is an
  22     # email address string.
  23     if not username.is_a?(String)
  24       msg =  'username must be a String '
  25       msg += "but a #{username.class.to_s()} was given"
  26       raise InvalidUserError.new(msg)
  27     end
  28
  29     parts = username.split('@')
  30
  31     if parts.length() < 2 then
  32       msg = "the username #{username} does not contain an '@' symbol"
  33       raise InvalidUserError.new(msg)
  34     end
  35
  36     localpart = parts[0]
  37
  38     if localpart.length() > 64 then
  39       msg = "the local part of #{username} cannot have more than 64 characters"
  40       raise InvalidUserError(msg)
  41     end
  42
  43     if localpart.empty? then
  44       msg = "the local part of #{username} cannot be empty"
  45       raise InvalidUserError.new(msg)
  46     end
  47
  48     @localpart = localpart
  49     @domain = Domain.new(parts[1])
  50   end
  51
  52   def localpart()
  53     return @localpart
  54   end
  55
  56   def to_s()
  57     return @localpart + '@' + @domain.to_s()
  58   end
  59
  60   def ==(other)
  61     return self.to_s() == other.to_s()
  62   end
  63 end