beremiz

fix problem when Beremiz is running without matiec installed

2017-08-25, Andrey Skvortsov
492e2cd6157e
fix problem when Beremiz is running without matiec installed

set matiec settings only once on first use of ProjectController class and give
user-friendly message on compilation about missing matiec
installation.


Traceback (most recent call last):
File "Beremiz.py", line 197, in
beremiz.Start()
File "Beremiz.py", line 192, in Start
self.CreateApplication()
File "Beremiz.py", line 130, in CreateApplication
self.BackgroundInitialization()
File "Beremiz.py", line 137, in BackgroundInitialization
self.ImportModules()
File "Beremiz.py", line 176, in ImportModules
import BeremizIDE
File
"BeremizIDE.py", line 76, in
from ProjectController import ProjectController, GetAddMenuItems,
MATIEC_ERROR_MODEL, ITEM_CONFNODE
File
"ProjectController.py", line 177, in
iec2c_cfg = Iec2CSettings()
File
"ProjectController.py", line 101, in __init__
self.ieclib_c_path = self.findLibCPath()
File
"ProjectController.py", line 135, in findLibCPath
os.path.join(self.ieclib_path, "C"),
File "/usr/lib/python2.7/posixpath.py", line 70, in join
elif path == '' or path.endswith('/'):
AttributeError: 'NoneType' object has no attribute 'endswith'
#!/usr/bin/env python
# -*- coding: utf-8 -*-
# This file is part of Beremiz runtime.
#
# Copyright (C) 2007: Edouard TISSERANT and Laurent BESSARD
# Copyright (C) 2017: Andrey Skvortsov
#
# See COPYING.Runtime file for copyrights details.
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
# This library 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
# Lesser General Public License for more details.
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
import os
import util.paths as paths
from nevow import rend, appserver, inevow, tags, loaders, athena
from nevow.page import renderer
from twisted.python import util
from twisted.internet import reactor
xhtml_header = '''<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"
"http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
'''
WorkingDir = None
class PLCHMI(athena.LiveElement):
initialised = False
def HMIinitialised(self, result):
self.initialised = True
def HMIinitialisation(self):
self.HMIinitialised(None)
class DefaultPLCStartedHMI(PLCHMI):
docFactory = loaders.stan(tags.div(render=tags.directive('liveElement'))[
tags.h1["PLC IS NOW STARTED"],
])
class PLCStoppedHMI(PLCHMI):
docFactory = loaders.stan(tags.div(render=tags.directive('liveElement'))[
tags.h1["PLC IS STOPPED"],
])
class MainPage(athena.LiveElement):
jsClass = u"WebInterface.PLC"
docFactory = loaders.stan(tags.div(render=tags.directive('liveElement'))[
tags.div(id='content')[
tags.div(render=tags.directive('PLCElement')),
]])
def __init__(self, *a, **kw):
athena.LiveElement.__init__(self, *a, **kw)
self.pcl_state = False
self.HMI = None
self.resetPLCStartedHMI()
def setPLCState(self, state):
self.pcl_state = state
if self.HMI is not None:
self.callRemote('updateHMI')
def setPLCStartedHMI(self, hmi):
self.PLCStartedHMIClass = hmi
def resetPLCStartedHMI(self):
self.PLCStartedHMIClass = DefaultPLCStartedHMI
def getHMI(self):
return self.HMI
def HMIexec(self, function, *args, **kwargs):
if self.HMI is not None:
getattr(self.HMI, function, lambda: None)(*args, **kwargs)
athena.expose(HMIexec)
def resetHMI(self):
self.HMI = None
def PLCElement(self, ctx, data):
return self.getPLCElement()
renderer(PLCElement)
def getPLCElement(self):
self.detachFragmentChildren()
if self.pcl_state:
f = self.PLCStartedHMIClass()
else:
f = PLCStoppedHMI()
f.setFragmentParent(self)
self.HMI = f
return f
athena.expose(getPLCElement)
def detachFragmentChildren(self):
for child in self.liveFragmentChildren[:]:
child.detach()
class WebInterface(athena.LivePage):
docFactory = loaders.stan([tags.raw(xhtml_header),
tags.html(xmlns="http://www.w3.org/1999/xhtml")[
tags.head(render=tags.directive('liveglue')),
tags.body[
tags.div[
tags.div(render=tags.directive("MainPage"))
]]]])
MainPage = MainPage()
PLCHMI = PLCHMI
def __init__(self, plcState=False, *a, **kw):
super(WebInterface, self).__init__(*a, **kw)
self.jsModules.mapping[u'WebInterface'] = paths.AbsNeighbourFile(__file__, 'webinterface.js')
self.plcState = plcState
self.MainPage.setPLCState(plcState)
def getHMI(self):
return self.MainPage.getHMI()
def LoadHMI(self, hmi, jsmodules):
for name, path in jsmodules.iteritems():
self.jsModules.mapping[name] = os.path.join(WorkingDir, path)
self.MainPage.setPLCStartedHMI(hmi)
def UnLoadHMI(self):
self.MainPage.resetPLCStartedHMI()
def PLCStarted(self):
self.plcState = True
self.MainPage.setPLCState(True)
def PLCStopped(self):
self.plcState = False
self.MainPage.setPLCState(False)
def renderHTTP(self, ctx):
"""
Force content type to fit with SVG
"""
req = inevow.IRequest(ctx)
req.setHeader('Content-type', 'application/xhtml+xml')
return super(WebInterface, self).renderHTTP(ctx)
def render_MainPage(self, ctx, data):
f = self.MainPage
f.setFragmentParent(self)
return ctx.tag[f]
def child_(self, ctx):
self.MainPage.detachFragmentChildren()
return WebInterface(plcState=self.plcState)
def beforeRender(self, ctx):
d = self.notifyOnDisconnect()
d.addErrback(self.disconnected)
def disconnected(self, reason):
self.MainPage.resetHMI()
# print reason
# print "We will be called back when the client disconnects"
def RegisterWebsite(port):
website = WebInterface()
site = appserver.NevowSite(website)
listening = False
reactor.listenTCP(port, site)
print _("HTTP interface port :"), port
return website
class statuslistener:
def __init__(self, site):
self.oldstate = None
self.site = site
def listen(self, state):
if state != self.oldstate:
action = {'Started': self.site.PLCStarted,
'Stopped': self.site.PLCStopped}.get(state, None)
if action is not None:
action()
self.oldstate = state
def website_statuslistener_factory(site):
return statuslistener(site).listen