Module: Kitchen::Base64Stream

Defined in:
lib/kitchen/base64_stream.rb

Overview

Base64 encoder/decoder that operates on IO objects so as to minimize memory allocations on large payloads.

Author:

Class Method Summary collapse

Class Method Details

.strict_decode(io_in, io_out) ⇒ Object

Decodes a Base64 input stream into an output stream. The input and ouput objects must be opened IO resources. In other words, opening and closing the resources are not the responsibilty of this method.

Parameters:

  • io_in (#read)

    input stream

  • io_out (#write)

    output stream


42
43
44
45
46
# File 'lib/kitchen/base64_stream.rb', line 42

def self.strict_decode(io_in, io_out)
  buffer = ""
  io_out.write(buffer.unpack("m0").first) while io_in.read(3 * 1000, buffer)
  buffer = nil # rubocop:disable Lint/UselessAssignment
end

.strict_encode(io_in, io_out) ⇒ Object

Encodes an input stream into a Base64 output stream. The input and ouput objects must be opened IO resources. In other words, opening and closing the resources are not the responsibilty of this method.

Parameters:

  • io_in (#read)

    input stream

  • io_out (#write)

    output stream


30
31
32
33
34
# File 'lib/kitchen/base64_stream.rb', line 30

def self.strict_encode(io_in, io_out)
  buffer = ""
  io_out.write([buffer].pack("m0")) while io_in.read(3 * 1000, buffer)
  buffer = nil # rubocop:disable Lint/UselessAssignment
end