class PDF::Reader::ObjectStream

:nodoc:
This is done for added compression and is described as an “Object Stream” in the spec.
provides a wrapper around a PDF stream object that contains other objects in it.

def [](objid) 

def [](objid)
  if offsets[objid].nil?
    nil
  else
    buf = PDF::Reader::Buffer.new(StringIO.new(@data), :seek => offsets[objid])
    parser = PDF::Reader::Parser.new(buf)
    parser.parse_token
  end
end

def buffer 

def buffer
  @buffer ||= PDF::Reader::Buffer.new(StringIO.new(@data))
end

def first 

def first
  TypeCheck.cast_to_int!(@dict[:First])
end

def initialize(stream)

:nodoc:

This is done for added compression and is described as an "Object Stream" in the spec.
provides a wrapper around a PDF stream object that contains other objects in it. 
def initialize(stream)
  @dict = stream.hash
  @data = stream.unfiltered_data
end

def offsets 

def offsets
  @offsets ||= {}
  return @offsets if @offsets.keys.size > 0
  size.times do
    @offsets[buffer.token.to_i] = first + buffer.token.to_i
  end
  @offsets
end

def size 

def size
  TypeCheck.cast_to_int!(@dict[:N])
end