Class: NMatrix::IO::Matlab::Mat5Reader::Tag

Inherits:
Struct
  • Object
show all
Includes:
Packable
Defined in:
lib/nmatrix/io/mat5_reader.rb

Overview

:nodoc:

Constant Summary collapse

DATA_TYPE_OPTS = 
BYTES_OPTS = {:bytes => 4, :signed => false}
LENGTH = 




Instance Attribute Summary collapse




Instance Method Summary
collapse






Instance Attribute Details






#bytes ⇒ Object







Returns the value of attribute bytes








Returns:


    

  • 
(Object)
—

    

    the current value of bytes
    

    

    • 










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# File 'lib/nmatrix/io/mat5_reader.rb', line 455

def bytes
  @bytes
end













#data_type ⇒ Object







Returns the value of attribute data_type








Returns:


    

  • 
(Object)
—

    

    the current value of data_type
    

    

    • 










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# File 'lib/nmatrix/io/mat5_reader.rb', line 455

def data_type
  @data_type
end













#raw_data_type ⇒ Object







Returns the value of attribute raw_data_type








Returns:


    

  • 
(Object)
—

    

    the current value of raw_data_type
    

    

    • 










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# File 'lib/nmatrix/io/mat5_reader.rb', line 455

def raw_data_type
  @raw_data_type
end













#small ⇒ Object







Returns the value of attribute small








Returns:


    

  • 
(Object)
—

    

    the current value of small
    

    

    • 










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# File 'lib/nmatrix/io/mat5_reader.rb', line 455

def small
  @small
end













Instance Method Details





#inspect ⇒ Object










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# File 'lib/nmatrix/io/mat5_reader.rb', line 496

def inspect
  "#<#{self.class.to_s} data_type=#{data_type}[#{raw_data_type}][#{raw_data_type.to_s(2)}] bytes=#{bytes} size=#{size}#{small? ? ' small' : ''}>"
end












#read_packed(packedio, options) ⇒ Object










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# File 'lib/nmatrix/io/mat5_reader.rb', line 474

def read_packed packedio, options
  self.raw_data_type = packedio.read([Integer, \
   DATA_TYPE_OPTS.merge(options)])

  # Borrowed from a SciPy patch
  upper = self.raw_data_type >> 16
  lower = self.raw_data_type & 0xFFFF

  if upper > 0
    # Small data element format
    raise IOError, 'Small data element format indicated, but length is more than 4 bytes!' if upper > 4

    self.bytes     = upper
    self.raw_data_type = lower

  else
    self.bytes = packedio.read([Integer, BYTES_OPTS.merge(options)])
  end

  self.data_type = MatReader::MDTYPES[self.raw_data_type]
end












#size ⇒ Object










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# File 'lib/nmatrix/io/mat5_reader.rb', line 470

def size
  small? ? 4 : 8
end












#small? ⇒ Boolean













Returns:


    

  • 
(Boolean)

    • 










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# File 'lib/nmatrix/io/mat5_reader.rb', line 466

def small?
  self.bytes > 0 and self.bytes <= 4
end












#write_packed(packedio, options) ⇒ Object







TODO: TEST WRITE.















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# File 'lib/nmatrix/io/mat5_reader.rb', line 462

def write_packed packedio, options
  packedio << [data_type, DATA_TYPE_OPTS] << [bytes, BYTES_OPTS]
end