cmscompleter.py

Go to the documentation of this file.

"""Word completion for CMS Software.
Based on rlcompleter from Python 2.4.1. Included additional namespace for not loaded modules
Please read license in your lcg external python version

benedikt.hegner@cern.ch

"""
from __future__ import absolute_import
# TODO: sometimes results are doubled. clean global_matches list!

import readline
import rlcompleter
import __builtin__
import __main__

__all__ = ["CMSCompleter"]

class CMSCompleter(rlcompleter.Completer):
    def __init__(self, namespace = None):
    
        if namespace and not isinstance(namespace, dict):
            raise TypeError('namespace must be a dictionary')

        # Don't bind to namespace quite yet, but flag whether the user wants a
        # specific namespace or to use __main__.__dict__. This will allow us
        # to bind to __main__.__dict__ at completion time, not now.
        if namespace is None:
            self.use_main_ns = 1
        else:
            self.use_main_ns = 0
            self.namespace = namespace      
        try:
            # loading cms namespace
            from . import namespaceDict
            self.cmsnamespace = namespaceDict.getNamespaceDict()
        except:
            print 'Could not load CMS namespace'

 
    def global_matches(self, text):
        """Compute matches when text is a simple name.

        Return a list of all keywords, built-in functions and names currently
        defined in self.namespace and self.cmsnamespace that match.

        """
        import keyword
        matches = []
        n = len(text)
        for list in [keyword.kwlist,
                     __builtin__.__dict__,
                     self.cmsnamespace]:
            for word in list:
                if word[:n] == text and word != "__builtins__":
                    matches.append(word)
        return matches

# connect CMSCompleter with readline
readline.set_completer(CMSCompleter().complete)
readline.parse_and_bind('tab: complete')