Class: RUtilAnts::Archive::ObjectReader

Inherits:
Object
  • Object
show all
Defined in:
lib/rUtilAnts/Archive.rb

Overview

Class used to read a Ruby object

Constant Summary collapse

OBJECT_HEADER_SIZE =

Size of the object header

5

Instance Method Summary collapse

Constructor Details

#initialize(iPassword, iSalt, iFile) ⇒ ObjectReader

Constructor

Parameters

  • iPassword (String): Password encrypting data

  • iSalt (String): Salt encoding data

  • iFile (IO): The IO that will send encrypted data



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# File 'lib/rUtilAnts/Archive.rb', line 154

def initialize(iPassword, iSalt, iFile)
  @StringReader = StringReader.new(iPassword, iSalt, iFile)
  @BufferRead = ''
end

Instance Method Details

#get ⇒ Object

Get the next object encrypted

Return

  • Object: The next object encrypted (or nil if none)



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# File 'lib/rUtilAnts/Archive.rb', line 163

def get
  rObject = nil

  # Read the size first
  while (@BufferRead.size < OBJECT_HEADER_SIZE)
    @BufferRead.concat(@StringReader.get)
  end
  lObjectType = @BufferRead[0..0]
  lObjectSize = @BufferRead[1..OBJECT_HEADER_SIZE-1].unpack('l')[0]
  # Then read the data
  while (@BufferRead.size < OBJECT_HEADER_SIZE+lObjectSize)
    @BufferRead.concat(@StringReader.get)
  end
  case lObjectType
  when TYPE_OBJECT
    rObject = Marshal.load(@BufferRead[OBJECT_HEADER_SIZE..OBJECT_HEADER_SIZE+lObjectSize-1])
  when TYPE_STRING
    rObject = @BufferRead[OBJECT_HEADER_SIZE..OBJECT_HEADER_SIZE+lObjectSize-1]
  else
    raise RuntimeError.new("Unknown object type: #{lObjectType}")
  end
  @BufferRead = @BufferRead[OBJECT_HEADER_SIZE+lObjectSize..-1]

  return rObject
end