util/misc.py
author Andrey Skvortsov <andrej.skvortzov@gmail.com>
Wed, 07 Dec 2016 19:24:16 +0300
changeset 1596 f5868f866d2b
parent 1511 91538d0c242c
child 1719 704c7036db85
permissions -rw-r--r--
stop PLC before unloading


This fixes segmentation fault if service was quit without stopping it.
It has happened if Beremiz service was quit using taskbar icon or by
closing Beremiz IDE (in case of autostarted local service).

In second case to trigger the bug following step has to be done:
1. Open Beremiz IDE
2. Open project, compile and connect to LOCAL:// runtime
3. Transfer and start the PLC program
4. Open other project without disconneting the PLC runtime
5. Close Beremiz IDE
#!/usr/bin/env python
# -*- coding: utf-8 -*-

# This file is part of Beremiz, a Integrated Development Environment for
# programming IEC 61131-3 automates supporting plcopen standard and CanFestival.
#
# Copyright (C) 2007: Edouard TISSERANT and Laurent BESSARD
#
# See COPYING file for copyrights details.
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.

"""
Misc definitions
"""

import os,sys

# helper func to check path write permission
def CheckPathPerm(path):
    if path is None or not os.path.isdir(path):
        return False
    for root, dirs, files in os.walk(path):
         for name in files:
             if os.access(root, os.W_OK) is not True or os.access(os.path.join(root, name), os.W_OK) is not True:
                 return False
    return True

def GetClassImporter(classpath):
    if type(classpath)==str:
        def fac():
            mod=__import__(classpath.rsplit('.',1)[0])
            return reduce(getattr, classpath.split('.')[1:], mod)
        return fac
    else:
        return classpath

def InstallLocalRessources(CWD):
    from BitmapLibrary import AddBitmapFolder
    from TranslationCatalogs import AddCatalog
    import wx

    # Beremiz bitmaps
    AddBitmapFolder(os.path.join(CWD, "images"))

    # Internationalization
    AddCatalog(os.path.join(CWD, "locale"))
    import gettext
    import __builtin__
    
    __builtin__.__dict__['_'] = wx.GetTranslation