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



159
160
161
162
 
# File 'lib/rUtilAnts/Archive.rb', line 159

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)



168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
 
# File 'lib/rUtilAnts/Archive.rb', line 168

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