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 and an Integrated Development Environment for
# programming IEC 61131-3 automates supporting plcopen standard and CanFestival.
#
# Copyright (C) 2011: Edouard TISSERANT and Laurent BESSARD
#
# 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 ctypes
from ctypes import *
from datetime import timedelta as td
ctypes.pythonapi.PyString_AsString.argtypes = (ctypes.c_void_p,)
ctypes.pythonapi.PyString_AsString.restype = ctypes.POINTER(ctypes.c_char)
class IEC_STRING(Structure):
"""
Must be changed according to changes in iec_types.h
"""
_fields_ = [("len", c_uint8),
("body", c_char * 126)]
class IEC_TIME(Structure):
"""
Must be changed according to changes in iec_types.h
"""
_fields_ = [("s", c_long), # tv_sec
("ns", c_long)] # tv_nsec
def _t(t, u=lambda x: x.value, p=lambda t, x: t(x)): return (t, u, p)
def _ttime(): return (IEC_TIME,
lambda x: td(0, x.s, x.ns/1000),
lambda t, x: t(x.days * 24 * 3600 + x.seconds, x.microseconds*1000))
SameEndianessTypeTranslator = {
"BOOL": _t(c_uint8, lambda x: x.value != 0),
"STEP": _t(c_uint8),
"TRANSITION": _t(c_uint8),
"ACTION": _t(c_uint8),
"SINT": _t(c_int8),
"USINT": _t(c_uint8),
"BYTE": _t(c_uint8),
"STRING": (IEC_STRING,
lambda x: x.body[:x.len],
lambda t, x: t(len(x), x)),
"INT": _t(c_int16),
"UINT": _t(c_uint16),
"WORD": _t(c_uint16),
"DINT": _t(c_int32),
"UDINT": _t(c_uint32),
"DWORD": _t(c_uint32),
"LINT": _t(c_int64),
"ULINT": _t(c_uint64),
"LWORD": _t(c_uint64),
"REAL": _t(c_float),
"LREAL": _t(c_double),
"TIME": _ttime(),
"TOD": _ttime(),
"DATE": _ttime(),
"DT": _ttime(),
}
SwapedEndianessTypeTranslator = {
# TODO
}
TypeTranslator = SameEndianessTypeTranslator
# Construct debugger natively supported types
DebugTypesSize = dict([(key, sizeof(t)) for key, (t, p, u) in SameEndianessTypeTranslator.iteritems() if t is not None])
def UnpackDebugBuffer(buff, indexes):
res = []
buffoffset = 0
buffsize = len(buff)
buffptr = cast(ctypes.pythonapi.PyString_AsString(id(buff)), c_void_p).value
for iectype in indexes:
c_type, unpack_func, pack_func = \
TypeTranslator.get(iectype, (None, None, None))
if c_type is not None and buffoffset < buffsize:
cursor = c_void_p(buffptr + buffoffset)
value = unpack_func(cast(cursor,
POINTER(c_type)).contents)
buffoffset += sizeof(c_type) if iectype != "STRING" else len(value)+1
res.append(value)
else:
break
if buffoffset and buffoffset == buffsize:
return res
return None
LogLevels = ["CRITICAL", "WARNING", "INFO", "DEBUG"]
LogLevelsCount = len(LogLevels)
LogLevelsDict = dict(zip(LogLevels, range(LogLevelsCount)))
LogLevelsDefault = LogLevelsDict["DEBUG"]