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
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Instance Attribute Details

    
      
      
      

  

  
    #bytes  ⇒ Object 
  

  

  




  

    

Returns the value of attribute bytes



  





  

Returns:


    
  
    
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        (Object)
      
      
      
        —
        
    

    the current value of bytes
    

    
      
    
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# File 'lib/nmatrix/io/mat5_reader.rb', line 439

def bytes
  @bytes
end

    		
  





    
      
      
      

  

  
    #data_type  ⇒ Object 
  

  

  




  

    

Returns the value of attribute data_type



  





  

Returns:


    
  
    
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        (Object)
      
      
      
        —
        
    

    the current value of data_type
    

    
      
    
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# File 'lib/nmatrix/io/mat5_reader.rb', line 439

def data_type
  @data_type
end

    		
  





    
      
      
      

  

  
    #raw_data_type  ⇒ Object 
  

  

  




  

    

Returns the value of attribute raw_data_type



  





  

Returns:


    
  
    
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        (Object)
      
      
      
        —
        
    

    the current value of raw_data_type
    

    
      
    
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# File 'lib/nmatrix/io/mat5_reader.rb', line 439

def raw_data_type
  @raw_data_type
end

    		
  





    
      
      
      

  

  
    #small  ⇒ Object 
  

  

  




  

    

Returns the value of attribute small



  





  

Returns:


    
  
    
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        (Object)
      
      
      
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    the current value of small
    

    
      
    
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# File 'lib/nmatrix/io/mat5_reader.rb', line 439

def small
  @small
end

    		
  





    
  



  

    
Instance Method Details


    
      

  

  
    #inspect  ⇒ Object 
  

  

  




  

    
      


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# File 'lib/nmatrix/io/mat5_reader.rb', line 479

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 458

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 454

def size
  small? ? 4 : 8
end

    		
  





    
      

  

  
    #small?  ⇒ Boolean 
  

  

  




  

    

  





  

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        (Boolean)
      
      
      
    
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# File 'lib/nmatrix/io/mat5_reader.rb', line 450

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 446

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