Class: Helpers::SubStreamView

Inherits:
BaseStreamView show all
Defined in:
lib/file_data/helpers/stream_view.rb

Overview

View of a stream that has a specified size in bytes

Instance Attribute Summary collapse

Attributes inherited from BaseStreamView

#start_pos, #stream

Instance Method Summary collapse

Methods included from BinaryExtensions

#read_ascii, #read_value

Constructor Details

#initialize(stream, start_pos, size) ⇒ SubStreamView

Returns a new instance of SubStreamView.



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# File 'lib/file_data/helpers/stream_view.rb', line 24

def initialize(stream, start_pos, size)
  super(stream, start_pos)
  @end_pos = @start_pos + size - 1
  @size = size
end

Instance Attribute Details

#end_pos ⇒ Object (readonly)

Returns the value of attribute end_pos.



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# File 'lib/file_data/helpers/stream_view.rb', line 22

def end_pos
  @end_pos
end

#size ⇒ Object (readonly)

Returns the value of attribute size.



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# File 'lib/file_data/helpers/stream_view.rb', line 22

def size
  @size
end

Instance Method Details

#eof? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/file_data/helpers/stream_view.rb', line 34

def eof?
  pos > @end_pos || @stream.eof?
end

#remaining_bytes ⇒ Object 



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# File 'lib/file_data/helpers/stream_view.rb', line 30

def remaining_bytes
  @end_pos - pos + 1
end