Class: Bytemapper::Table

Inherits:
Array
  • Object
show all
Includes:
Flattenable, Nameable
Defined in:
lib/bytemapper/table.rb

Instance Attribute Summary collapse

Attributes included from Nameable

#name, #names

Instance Method Summary collapse

Methods included from Flattenable

#flatten

Constructor Details

#initialize(shape, rows = nil) ⇒ Table

Returns a new instance of Table.



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# File 'lib/bytemapper/table.rb', line 16

def initialize(shape, rows = nil)
  @shape = Bytemapper.get(shape)
  rows.times { self << @shape  }
end

Instance Attribute Details

#bytes ⇒ Object (readonly)

Returns the value of attribute bytes.



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# File 'lib/bytemapper/table.rb', line 13

def bytes
  @bytes
end

#rows ⇒ Object (readonly)

Returns the value of attribute rows.



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# File 'lib/bytemapper/table.rb', line 13

def rows
  @rows
end

#shape ⇒ Object (readonly)

Returns the value of attribute shape.



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# File 'lib/bytemapper/table.rb', line 13

def shape
  @shape
end

Instance Method Details

#populate(bytes) ⇒ Object 



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# File 'lib/bytemapper/table.rb', line 21

def populate(bytes)
  bytes = bytes.nil? ? '' : bytes
  @bytes = bytes.is_a?(StringIO) ? bytes : StringIO.new(bytes)
  @bytes.string.force_encoding(Encoding::ASCII_8BIT)
  if unbounded?
    (bytes.size / shape.size).times { self << @shape } 
  end

  table = Table.new(shape) 
  table.clear
  (bytes.size / shape.size).times { table << Chunk.new(@bytes.read(shape.size), shape, shape.name) }
  table
end

#size ⇒ Object 



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# File 'lib/bytemapper/table.rb', line 39

def size
  empty? ? 0 : map(&:size).reduce(:+)
end

#unbounded? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/bytemapper/table.rb', line 35

def unbounded?
  empty?
end