c_ext/c_ext.py
author Laurent Bessard
Wed, 06 Mar 2013 10:58:15 +0100
changeset 966 dc1318160073
parent 953 1fb6cf5a4c4d
child 1061 02f371f3e063
permissions -rw-r--r--
Fixed bug when ST/IL code contains non-ascii characters (in comment) and modifying variable name
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import os
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from xml.dom import minidom
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import cPickle
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from xmlclass import *
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from CFileEditor import CFileEditor
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from PLCControler import UndoBuffer, LOCATION_CONFNODE, LOCATION_VAR_INPUT, LOCATION_VAR_OUTPUT 
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CFileClasses = GenerateClassesFromXSD(os.path.join(os.path.dirname(__file__), "cext_xsd.xsd"))
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TYPECONVERSION = {"BOOL" : "X", "SINT" : "B", "INT" : "W", "DINT" : "D", "LINT" : "L",
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    "USINT" : "B", "UINT" : "W", "UDINT" : "D", "ULINT" : "L", "REAL" : "D", "LREAL" : "L",
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    "STRING" : "B", "BYTE" : "B", "WORD" : "W", "DWORD" : "D", "LWORD" : "L", "WSTRING" : "W"}
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class CFile:
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    XSD = """<?xml version="1.0" encoding="ISO-8859-1" ?>
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    <xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema">
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      <xsd:element name="CExtension">
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        <xsd:complexType>
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          <xsd:attribute name="CFLAGS" type="xsd:string" use="required"/>
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          <xsd:attribute name="LDFLAGS" type="xsd:string" use="required"/>
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        </xsd:complexType>
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      </xsd:element>
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    </xsd:schema>
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    """
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    EditorType = CFileEditor
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    def __init__(self):
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        filepath = self.CFileName()
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        self.CFile = CFileClasses["CFile"]()
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        if os.path.isfile(filepath):
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            xmlfile = open(filepath, 'r')
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            tree = minidom.parse(xmlfile)
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            xmlfile.close()
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            for child in tree.childNodes:
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                if child.nodeType == tree.ELEMENT_NODE and child.nodeName == "CFile":
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                    self.CFile.loadXMLTree(child, ["xmlns", "xmlns:xsi", "xsi:schemaLocation"])
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                    self.CreateCFileBuffer(True)
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        else:
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            self.CreateCFileBuffer(False)
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            self.OnCTNSave()
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    def GetIconName(self):
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        return "Cfile"
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    def CFileName(self):
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        return os.path.join(self.CTNPath(), "cfile.xml")
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    def GetBaseTypes(self):
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        return self.GetCTRoot().GetBaseTypes()
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    def GetDataTypes(self, basetypes = False, only_locatables = False):
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        return self.GetCTRoot().GetDataTypes(basetypes=basetypes, only_locatables=only_locatables)
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    def GetSizeOfType(self, type):
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        return TYPECONVERSION.get(self.GetCTRoot().GetBaseType(type), None)
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    def SetVariables(self, variables):
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        self.CFile.variables.setvariable([])
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        for var in variables:
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            variable = CFileClasses["variables_variable"]()
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            variable.setname(var["Name"])
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            variable.settype(var["Type"])
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            variable.setclass(var["Class"])
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            self.CFile.variables.appendvariable(variable)
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    def GetVariables(self):
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        datas = []
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        for var in self.CFile.variables.getvariable():
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            datas.append({"Name" : var.getname(), "Type" : var.gettype(), "Class" : var.getclass()})
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        return datas
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    def GetVariableLocationTree(self):
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        '''See ConfigTreeNode.GetVariableLocationTree() for a description.'''
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        current_location = ".".join(map(str, self.GetCurrentLocation()))
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        vars = []
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        input = memory = output = 0
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        for var in self.CFile.variables.getvariable():
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            var_size = self.GetSizeOfType(var.gettype())
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            var_location = ""
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            if var.getclass() == "input":
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                var_class = LOCATION_VAR_INPUT
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                if var_size is not None:
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                    var_location = "%%I%s%s.%d"%(var_size, current_location, input)
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                input += 1
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            elif var.getclass() == "memory":
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                var_class = LOCATION_VAR_INPUT
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                if var_size is not None:
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                    var_location = "%%M%s%s.%d"%(var_size, current_location, memory)
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                memory += 1
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            else:
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                var_class = LOCATION_VAR_OUTPUT
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                if var_size is not None:
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                    var_location = "%%Q%s%s.%d"%(var_size, current_location, output)
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                output += 1
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            vars.append({"name": var.getname(),
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                         "type": var_class,
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                         "size": var_size,
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                         "IEC_type": var.gettype(),
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                         "var_name": var.getname(),
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                         "location": var_location,
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                         "description": "",
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                         "children": []})
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        return  {"name": self.BaseParams.getName(),
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                "type": LOCATION_CONFNODE,
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                "location": self.GetFullIEC_Channel(),
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                "children": vars}
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    def SetPartText(self, name, text):
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        if name == "Includes":
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            self.CFile.includes.settext(text)
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        elif name == "Globals":
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            self.CFile.globals.settext(text)
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        elif name == "Init":
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            self.CFile.initFunction.settext(text)
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        elif name == "CleanUp":
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            self.CFile.cleanUpFunction.settext(text)
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        elif name == "Retrieve":
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            self.CFile.retrieveFunction.settext(text)
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        elif name == "Publish":
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            self.CFile.publishFunction.settext(text)
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    def GetPartText(self, name):
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        if name == "Includes":
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            return self.CFile.includes.gettext()
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        elif name == "Globals":
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            return self.CFile.globals.gettext()
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        elif name == "Init":
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            return self.CFile.initFunction.gettext()
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        elif name == "CleanUp":
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            return self.CFile.cleanUpFunction.gettext()
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        elif name == "Retrieve":
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            return self.CFile.retrieveFunction.gettext()
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        elif name == "Publish":
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            return self.CFile.publishFunction.gettext()
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        return ""
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    def CTNTestModified(self):
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        return self.ChangesToSave or not self.CFileIsSaved()    
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    def OnCTNSave(self):
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        filepath = self.CFileName()
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        text = "<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"no\"?>\n"
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        extras = {"xmlns":"http://www.w3.org/2001/XMLSchema",
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                  "xmlns:xsi":"http://www.w3.org/2001/XMLSchema-instance",
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                  "xsi:schemaLocation" : "cext_xsd.xsd"}
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        text += self.CFile.generateXMLText("CFile", 0, extras)
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        xmlfile = open(filepath,"w")
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        xmlfile.write(text.encode("utf-8"))
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        xmlfile.close()
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        self.MarkCFileAsSaved()
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        return True
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    def CTNGenerate_C(self, buildpath, locations):
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        """
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        Generate C code
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        @param current_location: Tupple containing confnode IEC location : %I0.0.4.5 => (0,0,4,5)
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        @param locations: List of complete variables locations \
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            [{"IEC_TYPE" : the IEC type (i.e. "INT", "STRING", ...)
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            "NAME" : name of the variable (generally "__IW0_1_2" style)
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            "DIR" : direction "Q","I" or "M"
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            "SIZE" : size "X", "B", "W", "D", "L"
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            "LOC" : tuple of interger for IEC location (0,1,2,...)
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            }, ...]
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        @return: [(C_file_name, CFLAGS),...] , LDFLAGS_TO_APPEND
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        """
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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(str, current_location))
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        text = "/* Code generated by Beremiz c_ext confnode */\n\n"
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        # Adding includes
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        text += "/* User includes */\n"
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        text += self.CFile.includes.gettext()
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        text += "\n"
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        text += '#include "iec_types.h"'
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        # Adding variables
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        vars = []
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        inputs = memories = outputs = 0
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        for variable in self.CFile.variables.variable:
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            var = {"Name" : variable.getname(), "Type" : variable.gettype()}
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            if variable.getclass() == "input":
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                var["location"] = "__I%s%s_%d"%(self.GetSizeOfType(var["Type"]), location_str, inputs)
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                inputs += 1
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            elif variable.getclass() == "memory":
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                var["location"] = "__M%s%s_%d"%(self.GetSizeOfType(var["Type"]), location_str, memories)
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                memories += 1
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            else:
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                var["location"] = "__Q%s%s_%d"%(self.GetSizeOfType(var["Type"]), location_str, outputs)
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                outputs += 1
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            vars.append(var)
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        text += "/* Beremiz c_ext confnode user variables definition */\n"
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        base_types = self.GetCTRoot().GetBaseTypes()
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        for var in vars:
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            if var["Type"] in base_types:
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                prefix = "IEC_"
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            else:
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                prefix = ""
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            text += "%s%s beremiz%s;\n"%(prefix, var["Type"], var["location"])
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            text += "%s%s *%s = &beremiz%s;\n"%(prefix, var["Type"], var["location"], var["location"])
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        text += "/* User variables reference */\n"
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        for var in vars:
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            text += "#define %s beremiz%s\n"%(var["Name"], var["location"])
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        text += "\n"
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        # Adding user global variables and routines
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        text += "/* User internal user variables and routines */\n"
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        text += self.CFile.globals.gettext()
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        # Adding Beremiz confnode functions
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        text += "/* Beremiz confnode functions */\n"
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        text += "int __init_%s(int argc,char **argv)\n{\n"%location_str
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        text += self.CFile.initFunction.gettext()
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        text += "  return 0;\n"
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        text += "\n}\n\n"
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        text += "void __cleanup_%s(void)\n{\n"%location_str
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        text += self.CFile.cleanUpFunction.gettext()
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        text += "\n}\n\n"
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        text += "void __retrieve_%s(void)\n{\n"%location_str
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        text += self.CFile.retrieveFunction.gettext()
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        text += "\n}\n\n"
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        text += "void __publish_%s(void)\n{\n"%location_str
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        text += self.CFile.publishFunction.gettext()
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        text += "\n}\n\n"
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   240
        
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        Gen_Cfile_path = os.path.join(buildpath, "CFile_%s.c"%location_str)
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        cfile = open(Gen_Cfile_path,'w')
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        cfile.write(text)
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        cfile.close()
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        matiec_flags = '"-I%s"'%os.path.abspath(self.GetCTRoot().GetIECLibPath())
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        return [(Gen_Cfile_path, str(self.CExtension.getCFLAGS() + matiec_flags))],str(self.CExtension.getLDFLAGS()),True
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#-------------------------------------------------------------------------------
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#                      Current Buffering Management Functions
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#-------------------------------------------------------------------------------
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    """
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    Return a copy of the cfile model
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    """
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    def Copy(self, model):
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        return cPickle.loads(cPickle.dumps(model))
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    def CreateCFileBuffer(self, saved):
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        self.Buffering = False
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        self.CFileBuffer = UndoBuffer(cPickle.dumps(self.CFile), saved)
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    def BufferCFile(self):
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        self.CFileBuffer.Buffering(cPickle.dumps(self.CFile))
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    def StartBuffering(self):
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        self.Buffering = True
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    def EndBuffering(self):
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        if self.Buffering:
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            self.CFileBuffer.Buffering(cPickle.dumps(self.CFile))
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            self.Buffering = False
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    def MarkCFileAsSaved(self):
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        self.EndBuffering()
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        self.CFileBuffer.CurrentSaved()
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    def CFileIsSaved(self):
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        return self.CFileBuffer.IsCurrentSaved() and not self.Buffering
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    def LoadPrevious(self):
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        self.EndBuffering()
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        self.CFile = cPickle.loads(self.CFileBuffer.Previous())
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    def LoadNext(self):
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        self.CFile = cPickle.loads(self.CFileBuffer.Next())
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    def GetBufferState(self):
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        first = self.CFileBuffer.IsFirst() and not self.Buffering
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        last = self.CFileBuffer.IsLast()
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        return not first, not last
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