connectors/__init__.py
author Andrey Skvortsov <andrej.skvortzov@gmail.com>
Fri, 08 Jun 2018 15:10:27 +0300
changeset 2180 017ad9cc20b9
parent 2007 ef2d479f564f
child 2182 eeca1aff0691
permissions -rwxr-xr-x
Don't use fixed width labels in WAMP and PYRO dialogs

This causes problems if labels are translated into other languages and
width wasn't enough.
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#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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# This file is part of Beremiz, a Integrated Development Environment for
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# programming IEC 61131-3 automates supporting plcopen standard and CanFestival.
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#
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# Copyright (C) 2007: Edouard TISSERANT and Laurent BESSARD
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# Copyright (C) 2017: Andrey Skvortsov
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#
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# See COPYING file for copyrights details.
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License
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# as published by the Free Software Foundation; either version 2
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# of the License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
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# Package initialisation
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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 _GetLocalConnectorClassFactory(name):
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    return lambda: getattr(__import__(name, globals(), locals()), name + "_connector_factory")
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def _GetLocalConnectorClassDialog(name):
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    return lambda: getattr(__import__(name + '.dialog', globals(), locals(), fromlist=['dialog']), name + "_connector_dialog")
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def _GetLocalConnectorURITypes(name):
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    return lambda: getattr(__import__(name + '.dialog', globals(), locals(), fromlist=['dialog']), "URITypes", None)
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connectors = {name:
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              _GetLocalConnectorClassFactory(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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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 ConnectorFactory(uri, confnodesroot):
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    """
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    Return a connector corresponding to the URI
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    or None if cannot connect to URI
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    """
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    servicetype = uri.split("://")[0].upper()
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    if servicetype == "LOCAL":
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        # Local is special case
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        # pyro connection to local runtime
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        # started on demand, listening on random port
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        servicetype = "PYRO"
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        runtime_port = confnodesroot.AppFrame.StartLocalRuntime(
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            taskbaricon=True)
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        uri = "PYROLOC://127.0.0.1:" + str(runtime_port)
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    elif servicetype in connectors:
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        pass
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    elif servicetype[-1] == 'S' and servicetype[:-1] in connectors:
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        servicetype = servicetype[:-1]
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    else:
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        return None
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    # import module according to uri type
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    connectorclass = connectors[servicetype]()
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    return connectorclass(uri, confnodesroot)
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def ConnectorDialog(conn_type, confnodesroot):
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    if conn_type not in connectors_dialog:
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        return None
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    connectorclass = connectors_dialog[conn_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 conn_type in connectors_dialog:
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        connectorTypes = connectors_dialog[conn_type]["URITypes"]()
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        if connectorTypes and uri in connectorTypes:
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            typeOfConnector = conn_type
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            break
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    return typeOfConnector