1

#!/usr/bin/env python

     2

# -*- coding: utf-8 -*-

     3

     4

# This file is part of Beremiz, a Integrated Development Environment for

     5

# programming IEC 61131-3 automates supporting plcopen standard and CanFestival.

     6

#

     7

# Copyright (C) 2007: Edouard TISSERANT and Laurent BESSARD

     8

# Copyright (C) 2017: Andrey Skvortsov

     9

#

    10

# See COPYING file for copyrights details.

    11

#

    12

# This program is free software; you can redistribute it and/or

    13

# modify it under the terms of the GNU General Public License

    14

# as published by the Free Software Foundation; either version 2

    15

# of the License, or (at your option) any later version.

    16

#

    17

# This program is distributed in the hope that it will be useful,

    18

# but WITHOUT ANY WARRANTY; without even the implied warranty of

    19

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

    20

# GNU General Public License for more details.

    21

#

    22

# You should have received a copy of the GNU General Public License

    23

# along with this program; if not, write to the Free Software

    24

# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.

    25

    26

    27

from __future__ import absolute_import

    28

import os

    29

from POULibrary import POULibrary

    30

from py_ext.PythonFileCTNMixin import PythonFileCTNMixin

    31

import util.paths as paths

    32

    33

    34

class PythonLibrary(POULibrary):

    35

    def GetLibraryPath(self):

    36

        return paths.AbsNeighbourFile(__file__, "pous.xml")

    37

    38

    def Generate_C(self, buildpath, varlist, IECCFLAGS):

    39

    40

        plc_python_filepath = paths.AbsNeighbourFile(__file__, "plc_python.c")

    41

        plc_python_file = open(plc_python_filepath, 'r')

    42

        plc_python_code = plc_python_file.read()

    43

        plc_python_file.close()

    44

        python_eval_fb_list = []

    45

        for v in varlist:

    46

            if v["vartype"] == "FB" and v["type"] in ["PYTHON_EVAL",

    47

                                                      "PYTHON_POLL"]:

    48

                python_eval_fb_list.append(v)

    49

        python_eval_fb_count = max(1, len(python_eval_fb_list))

    50

    51

        # prepare python code

    52

        plc_python_code = plc_python_code % {

    53

            "python_eval_fb_count": python_eval_fb_count}

    54

    55

        Gen_Pythonfile_path = os.path.join(buildpath, "py_ext.c")

    56

        pythonfile = open(Gen_Pythonfile_path, 'w')

    57

        pythonfile.write(plc_python_code)

    58

        pythonfile.close()

    59

    60

        return (["py_ext"], [(Gen_Pythonfile_path, IECCFLAGS)], True), ""

    61

    62

    63

class PythonFile(PythonFileCTNMixin):

    64

    65

    def GetIconName(self):

    66

        return "Pyfile"