Class: Moneta::Transforms::Bzip2

Inherits:
Moneta::Transform show all
Defined in:
lib/moneta/transforms/bzip2.rb

Overview

Compresses strings using the rbzip2 gem

Instance Method Summary collapse

Methods inherited from Moneta::Transform

#decodable?, delegate_to, #initialize, #method_missing, #respond_to_missing?

Constructor Details

This class inherits a constructor from Moneta::Transform

Dynamic Method Handling

This class handles dynamic methods through the method_missing method in the class Moneta::Transform

Instance Method Details

#decode(value) ⇒ String

Decompresses BZip2-compressed data

Parameters:

  • value (String)

Returns:

  • (String) 


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# File 'lib/moneta/transforms/bzip2.rb', line 32

def decode(value)
  ::RBzip2.default_adapter::Decompressor.new(::StringIO.new(value)).read
end

#encode(value) ⇒ String

Compresses using BZip2

Parameters:

  • value (String)

Returns:

  • (String) 


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# File 'lib/moneta/transforms/bzip2.rb', line 12

def encode(value)
  io = ::StringIO.new
  bz = ::RBzip2.default_adapter::Compressor.new(io)
  bz.write(value)
  bz.close
  io.string
end

#encoded?(value) ⇒ Boolean

Returns true if the string starts with the right magic number (“BZh”)

Parameters:

  • value (Object)

Returns:

  • (Boolean) 


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# File 'lib/moneta/transforms/bzip2.rb', line 24

def encoded?(value)
  String === value && value.byteslice(0, 3) == "BZh"
end