Class: Mail::Encodings::Base64

Inherits:
SevenBit show all
Defined in:
lib/mail/encodings/base64.rb

Overview

Base64 encoding handles binary content at the cost of 4 output bytes per input byte.

Constant Summary collapse

NAME =
'base64'
PRIORITY =
3

Class Method Summary collapse

Methods inherited from TransferEncoding

can_transport?, lowest_cost, negotiate, renegotiate, to_s

Class Method Details

.can_encode?(enc) ⇒ Boolean

Returns:

  • (Boolean)

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# File 'lib/mail/encodings/base64.rb', line 14

def self.can_encode?(enc)
  true
end

.compatible_input?(str) ⇒ Boolean

Ruby Base64 inserts newlines automatically, so it doesn't exceed SMTP line length limits.

Returns:

  • (Boolean)

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# File 'lib/mail/encodings/base64.rb', line 33

def self.compatible_input?(str)
  true
end

.cost(str) ⇒ Object

3 bytes in -> 4 bytes out


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# File 'lib/mail/encodings/base64.rb', line 27

def self.cost(str)
  4.0 / 3
end

.decode(str) ⇒ Object


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# File 'lib/mail/encodings/base64.rb', line 18

def self.decode(str)
  RubyVer.decode_base64(str)
end

.encode(str) ⇒ Object


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# File 'lib/mail/encodings/base64.rb', line 22

def self.encode(str)
  ::Mail::Utilities.binary_unsafe_to_crlf(RubyVer.encode_base64(str))
end