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Revision 154

Added by Aaron Marcuse-Kubitza about 13 years ago

xpath.py: Added caching of parsed XPaths. Added automatic conversion of strings to paths where needed.

View differences:

scripts/lib/xpath.py
41 41 
    len(elem.keys[0]) == 1: return elem.keys[0]
42 42 
    else: return None
43 43 

  		




  
  44
  
    
_cache = {}


  		




  
  45
  
    

  		




  44
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def parse(str_):


  		




  
  47
  
    
    try: return _cache[str_]


  		




  
  48
  
    
    except KeyError: pass


  		




  
  49
  
    
    


  		




  45
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    parser = Parser(str_)


  		




  46
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  47
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    def _path():


  		




  ......




  117
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    parser.str_('/') # optional leading /


  		




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    path = _path()


  		




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    parser.end()


  		




  
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    _cache[str_] = path


  		




  120
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    return path


  		




  121
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  122
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instance_level = 1


  		




  ......




  139
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    '''Warning: The last_only optimization may put data that should be together


  		




  140
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    into separate nodes'''


  		




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    if last_only == None: last_only = create


  		




  
  148
  
    
    if type(xpath) == str: xpath = parse(xpath)


  		




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    if create and not is_positive(xpath): return None


  		




  144
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    doc = parent.ownerDocument


  		












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