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from __future__ import absolute_import

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from os import listdir, path

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import util.paths as paths

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_base_path = paths.AbsDir(__file__)

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def _GetLocalConnectorClassDialog(name):

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    return lambda: getattr(__import__(name, globals(), locals()), name + "_connector_dialog")

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def _GetLocalConnectorURITypes(name):

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    return lambda: getattr(__import__(name, globals(), locals()), "URITypes", None)

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connectors_dialog = {name:

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                     {"function":_GetLocalConnectorClassDialog(name), "URITypes": _GetLocalConnectorURITypes(name)}

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                     for name in listdir(_base_path)

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                     if (path.isdir(path.join(_base_path, name)) and

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                         not name.startswith("__"))}

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def ConnectorDialog(type, confnodesroot):

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    if type not in connectors_dialog:

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        return None

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    connectorclass = connectors_dialog[type]["function"]()

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    return connectorclass(confnodesroot)

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def GetConnectorFromURI(uri):

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    typeOfConnector = None

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    for t in connectors_dialog:

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        connectorTypes = connectors_dialog[t]["URITypes"]()

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        if connectorTypes and uri in connectorTypes:

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            typeOfConnector = t

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            break

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    return typeOfConnector