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annif.analyzer._parse_analyzer_args()   A

↳ Parent: annif.analyzer

Complexity

Conditions 5

Size

Total Lines 13
Code Lines 13

Duplication

Lines 0
Ratio 0 %

Importance

Changes 0
Metric Value
cc 5
eloc 13
nop 1
dl 0
loc 13
rs 9.2833
c 0
b 0
f 0
1 
"""Collection of language-specific analyzers and analyzer registry for Annif"""
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import re

            


            
                                                                                                            
                            
            
                                    
            
            

                
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from . import simple

            


            
                                                                                                            
                            
            
                                    
            
            

                
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from . import snowball

            


            
                                                                                                            
                            
            
                                    
            
            

                
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import annif

            


            
                                                                                                            
                            
            
                                    
            
            

                
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from annif.util import parse_args

            


            
                                                                                                            
                            
            
                                    
            
            

                
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_analyzers = {}

            


            
                                                                                                            
                            
            
                                    
            
            

                
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def register_analyzer(analyzer):

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    _analyzers[analyzer.name] = analyzer

            


            
                                                                                                            
                            
            
                                    
            
            

                
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def _extend_posargs(posargs):

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    if not posargs:

            


            
                                                                                                            
                            
            
                                    
            
            

                
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        posargs = [None]

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    return posargs

            


            
                                                                                                            
                                                                
            
                                    
            
            

                
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def get_analyzer(analyzerspec):

            


            
                                                                        
                            
            
                                    
            
            

                
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    match = re.match(r'(\w+)(\((.*)\))?', analyzerspec)

            


            
                                                                        
                            
            
                                    
            
            

                
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    if match is None:

            


            
                                                                        
                            
            
                                    
            
            

                
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        raise ValueError(

            


            
                                                                        
                            
            
                                    
            
            

                
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            "Invalid analyzer specification {}".format(analyzerspec))

            


            
                                                                        
                            
            
                                    
            
            

                
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    analyzer = match.group(1)

            


            
                                                                        
                            
            
                                    
            
            

                
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    posargs, kwargs = parse_args(match.group(3))

            


            
                                                                        
                            
            
                                    
            
            

                
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    posargs = _extend_posargs(posargs)

            


            
                                                                        
                            
            
                                    
            
            

                
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    try:

            


            
                                                                        
                            
            
                                    
            
            

                
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        return _analyzers[analyzer](*posargs, **kwargs)

            


            
                                                                        
                            
            
                                    
            
            

                
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    except KeyError:

            


            
                                                                                                            
                            
            
                                    
            
            

                
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        raise ValueError("No such analyzer {}".format(analyzer))

            


            
                                                                                                            
                            
            
                                    
            
            

                
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register_analyzer(simple.SimpleAnalyzer)

            


            
                                                                                                            
                            
            
                                    
            
            

                
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register_analyzer(snowball.SnowballAnalyzer)

            


            
                                                                                                            
                            
            
                                    
            
            

                
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# Optional analyzers

            


            
                                                                                                            
                            
            
                                    
            
            

                
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try:

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    from . import voikko

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    register_analyzer(voikko.VoikkoAnalyzer)

            


            
                                                                                                            
                            
            
                                    
            
            

                
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except ImportError:

            


            
                                                                                                            
                                                                
            
                                    
            
            

                
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    annif.logger.debug("voikko not available, not enabling voikko analyzer")

            


            
                                                        
            
                                    
            
            

                
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