class Mail::Encodings::TransferEncoding

Constants

NAME
PRIORITY

Public Class Methods

can_encode?(enc) click to toggle source
# File lib/mail/encodings/transfer_encoding.rb, line 17
def self.can_encode?(enc)
  can_transport? enc 
end
can_transport?(enc) click to toggle source
# File lib/mail/encodings/transfer_encoding.rb, line 8
def self.can_transport?(enc)
  enc = Encodings.get_name(enc)
  if Encodings.defined? enc
    Encodings.get_encoding(enc).new.is_a? self
  else
    false
  end
end
compatible_input?(str) click to toggle source
# File lib/mail/encodings/transfer_encoding.rb, line 25
def self.compatible_input?(str)
  true
end
cost(str) click to toggle source
# File lib/mail/encodings/transfer_encoding.rb, line 21
def self.cost(str)
  raise "Unimplemented"
end
get_best_compatible(source_encoding, str) click to toggle source
# File lib/mail/encodings/transfer_encoding.rb, line 33
def self.get_best_compatible(source_encoding, str)
  if self.can_transport?(source_encoding) && self.compatible_input?(str)
    source_encoding
  else
    choices = Encodings.get_all.select do |enc|
      self.can_transport?(enc) && enc.can_encode?(source_encoding)
    end

    best = nil
    best_cost = nil

    choices.each do |enc|
      # If the current choice cannot be transported safely,
      # give priority to other choices but allow it to be used as a fallback.
      this_cost = enc.cost(str) if enc.compatible_input?(str)

      if !best_cost || (this_cost && this_cost < best_cost)
        best_cost = this_cost
        best = enc
      elsif this_cost == best_cost
        best = enc if enc::PRIORITY < best::PRIORITY
      end
    end

    best
  end
end
to_s() click to toggle source
# File lib/mail/encodings/transfer_encoding.rb, line 29
def self.to_s
  self::NAME
end

Public Instance Methods

to_s() click to toggle source
# File lib/mail/encodings/transfer_encoding.rb, line 61
def to_s
  self.class.to_s
end