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Mode.from_byteorder()   B
last analyzed

↳ Parent: Mode

Complexity

Conditions 5

Size

Total Lines 15

Duplication

Lines 0
Ratio 0 %

Code Coverage

Tests 10
CRAP Score 5

Importance

Changes 2
Bugs 0 Features 0
Metric Value
cc 5
c 2
b 0
f 0
dl 0
loc 15
ccs 10
cts 10
cp 1
crap 5
rs 8.5454
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"""binary representation modes used for a StarStruct object."""
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import sys

            


            
                                                                                                            
                            
            
                                    
            
            

                
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import enum

            


            
                                                                                                            
                            
            
                                    
            
            

                
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@enum.unique

            


            
                                                                                                            
                            
            
                                    
            
            

                
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class Mode(enum.Enum):

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    """The StarStruct modes match the modes supported by struct.pack/unpack."""

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    Native = '='

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    Little = '<'

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    Big = '>'

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    Network = '!'

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    def to_byteorder(self):

            


            
                                                                                                            
                            
            
                                    
            
            

                
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        """

            


            
                                                                                                            
                            
            
                                    
            
            

                
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        Convert a Mode to a byteorder string such as required by the

            


            
                                                                                                            
                            
            
                                    
            
            

                
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        to_bytes() or from_bytes() functions.

            


            
                                                                                                            
                            
            
                                    
            
            

                
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        """

            


            
                                                                                                            
                            
            
                                    
            
            

                
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        if self == Mode.Native:

            


            
                                                                                                            
                            
            
                                    
            
            

                
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            return sys.byteorder

            


            
                                                                                                            
                            
            
                                    
            
            

                
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        elif self == Mode.Little:

            


            
                                                                                                            
                            
            
                                    
            
            

                
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            return 'little'

            


            
                                                                                                            
                            
            
                                    
            
            

                
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        else:  # Big or Network

            


            
                                                                                                            
                            
            
                                    
            
            

                
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            return 'big'

            


            
                                                                                                            
                                                                
            
                                    
            
            

                
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    @staticmethod

            


            
                                                        
            
                                    
            
            

                
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    def from_byteorder(val):

            


            
                                                        
            
                                    
            
            

                
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        """

            


            
                                                        
            
                                    
            
            

                
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        Convert a byteorder string such as used by the to_bytes() or

            


            
                                                        
            
                                    
            
            

                
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        from_bytes() functions into a Mode value.

            


            
                                                        
            
                                    
            
            

                
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        """

            


            
                                                        
            
                                    
            
            

                
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        if val == 'little':

            


            
                                                        
            
                                    
            
            

                
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            return Mode.Little

            


            
                                                        
            
                                    
            
            

                
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        elif val == 'big':

            


            
                                                        
            
                                    
            
            

                
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            return Mode.Big

            


            
                                                        
            
                                    
            
            

                
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        elif val == 'native':  # custom

            


            
                                                        
            
                                    
            
            

                
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            return Mode.Native

            


            
                                                        
            
                                    
            
            

                
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        elif val == 'network':  # custom

            


            
                                                        
            
                                    
            
            

                
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            return Mode.Network

            


            
                                                        
            
                                    
            
            

                
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        raise TypeError('{} not a valid byteorder'.format(val))

            


            
                                                        
            
                                    
            
            

                
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