py_ext/py_ext.py
author laurent
Fri, 08 Jun 2012 12:39:37 +0200
changeset 762 aaacc83aa86b
parent 742 41a4a560406c
child 781 cdc6393705ce
permissions -rw-r--r--
Modifying canfestival plugin to following the new Beremiz confnode paradigm
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import os
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from POULibrary import POULibrary
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from PythonFileCTNMixin import PythonFileCTNMixin
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from util.misc import opjimg
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class PythonLibrary(POULibrary):
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    def GetLibraryPath(self):
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        return os.path.join(os.path.split(__file__)[0], "pous.xml") 
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    def Generate_C(self, buildpath, varlist, IECCFLAGS):
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        plc_python_filepath = os.path.join(os.path.split(__file__)[0], "plc_python.c")
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        plc_python_file = open(plc_python_filepath, 'r')
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        plc_python_code = plc_python_file.read()
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        plc_python_file.close()
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        python_eval_fb_list = []
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        for v in varlist:
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            if v["vartype"] == "FB" and v["type"] in ["PYTHON_EVAL","PYTHON_POLL"]:
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                python_eval_fb_list.append(v)
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        python_eval_fb_count = max(1, len(python_eval_fb_list))
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        # prepare python code
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        plc_python_code = plc_python_code % { "python_eval_fb_count": python_eval_fb_count }
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        Gen_Pythonfile_path = os.path.join(buildpath, "py_ext.c")
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        pythonfile = open(Gen_Pythonfile_path,'w')
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        pythonfile.write(plc_python_code)
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        pythonfile.close()
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        return (["py_ext"], [(Gen_Pythonfile_path, IECCFLAGS)], True), ""
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class PythonFile(PythonFileCTNMixin):
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    def GetIconPath(self):
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        return opjimg("Pyfile")
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    def CTNGenerate_C(self, buildpath, locations):
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        current_location = self.GetCurrentLocation()
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        # define a unique name for the generated C file
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        location_str = "_".join(map(lambda x:str(x), current_location))
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        runtimefile_path = os.path.join(buildpath, "runtime_%s.py"%location_str)
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        runtimefile = open(runtimefile_path, 'w')
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        runtimefile.write(self.GetPythonCode())
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        runtimefile.close()
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        return [], "", False, ("runtime_%s.py"%location_str, file(runtimefile_path,"rb"))
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