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#!/usr/bin/env python

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

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#This file is part of PLCOpenEditor, a library implementing an IEC 61131-3 editor

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#based on the plcopen standard. 

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#

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

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#

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#See COPYING file for copyrights details.

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#

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

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#modify it under the terms of the GNU General Public

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#License as published by the Free Software Foundation; either

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#version 2.1 of the License, or (at your option) any later version.

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#

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

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

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#MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

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#General Public License for more details.

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#

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

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

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#Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

    24

    25

from xml.dom import minidom

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from types import StringType, UnicodeType

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import cPickle

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import os,sys,re

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import datetime

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from time import localtime

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from plcopen import plcopen

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from plcopen.structures import *

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from graphics.GraphicCommons import *

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from PLCGenerator import *

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duration_model = re.compile("(?:([0-9]{1,2})h)?(?:([0-9]{1,2})m(?!s))?(?:([0-9]{1,2})s)?(?:([0-9]{1,3}(?:\.[0-9]*)?)ms)?")

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ITEMS_EDITABLE = [ITEM_PROJECT,

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                  ITEM_POU,

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                  ITEM_VARIABLE,

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                  ITEM_TRANSITION,

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                  ITEM_ACTION,

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                  ITEM_CONFIGURATION,

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                  ITEM_RESOURCE,

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                  ITEM_DATATYPE

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                 ] = range(8)

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ITEMS_UNEDITABLE = [ITEM_DATATYPES,

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                    ITEM_FUNCTION,

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                    ITEM_FUNCTIONBLOCK,

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                    ITEM_PROGRAM,

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                    ITEM_TRANSITIONS,

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                    ITEM_ACTIONS,

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                    ITEM_CONFIGURATIONS,

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                    ITEM_RESOURCES,

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                    ITEM_PROPERTIES

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                   ] = range(8, 17)

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ITEMS_VARIABLE = [ITEM_VAR_LOCAL,

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                  ITEM_VAR_GLOBAL,

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                  ITEM_VAR_EXTERNAL,

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                  ITEM_VAR_TEMP,

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                  ITEM_VAR_INPUT,

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                  ITEM_VAR_OUTPUT,

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                  ITEM_VAR_INOUT

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                 ] = range(17, 24)

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VAR_CLASS_INFOS = {"Local" :    (plcopen.interface_localVars,    ITEM_VAR_LOCAL),

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                   "Global" :   (plcopen.interface_globalVars,   ITEM_VAR_GLOBAL),

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                   "External" : (plcopen.interface_externalVars, ITEM_VAR_EXTERNAL),

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                   "Temp" :     (plcopen.interface_tempVars,     ITEM_VAR_TEMP),

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                   "Input" :    (plcopen.interface_inputVars,    ITEM_VAR_INPUT),

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                   "Output" :   (plcopen.interface_outputVars,   ITEM_VAR_OUTPUT),

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                   "InOut" :    (plcopen.interface_inOutVars,    ITEM_VAR_INOUT)

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                  }

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LOCATIONS_ITEMS = [LOCATION_PLUGIN,

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                   LOCATION_MODULE,

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                   LOCATION_GROUP,

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                   LOCATION_VAR_INPUT,

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                   LOCATION_VAR_OUTPUT,

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                   LOCATION_VAR_MEMORY] = range(6)

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ScriptDirectory = os.path.split(os.path.realpath(__file__))[0]

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def GetUneditableNames():

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    _ = lambda x:x

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    return [_("User-defined POUs"), _("Functions"), _("Function Blocks"), 

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            _("Programs"), _("Data Types"), _("Transitions"), _("Actions"), 

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            _("Configurations"), _("Resources"), _("Properties")]

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UNEDITABLE_NAMES = GetUneditableNames()

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[USER_DEFINED_POUS, FUNCTIONS, FUNCTION_BLOCKS, PROGRAMS, 

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 DATA_TYPES, TRANSITIONS, ACTIONS, CONFIGURATIONS, 

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 RESOURCES, PROPERTIES] = UNEDITABLE_NAMES

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#-------------------------------------------------------------------------------

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#                         Undo Buffer for PLCOpenEditor

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#-------------------------------------------------------------------------------

   100

   101

# Length of the buffer

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UNDO_BUFFER_LENGTH = 20

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   104

"""

   105

Class implementing a buffer of changes made on the current editing model

   106

"""

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class UndoBuffer:

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   109

    # Constructor initialising buffer

   110

    def __init__(self, currentstate, issaved = False):

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        self.Buffer = []

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        self.CurrentIndex = -1

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        self.MinIndex = -1

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        self.MaxIndex = -1

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        # if current state is defined

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        if currentstate:

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            self.CurrentIndex = 0

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            self.MinIndex = 0

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            self.MaxIndex = 0

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        # Initialising buffer with currentstate at the first place

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        for i in xrange(UNDO_BUFFER_LENGTH):

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            if i == 0:

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                self.Buffer.append(currentstate)

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            else:

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                self.Buffer.append(None)

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        # Initialising index of state saved

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        if issaved:

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            self.LastSave = 0

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        else:

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            self.LastSave = -1

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   132

    # Add a new state in buffer

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    def Buffering(self, currentstate):

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        self.CurrentIndex = (self.CurrentIndex + 1) % UNDO_BUFFER_LENGTH

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        self.Buffer[self.CurrentIndex] = currentstate

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        # Actualising buffer limits

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        self.MaxIndex = self.CurrentIndex

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        if self.MinIndex == self.CurrentIndex:

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            # If the removed state was the state saved, there is no state saved in the buffer

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            if self.LastSave == self.MinIndex:

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                self.LastSave = -1

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            self.MinIndex = (self.MinIndex + 1) % UNDO_BUFFER_LENGTH

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        self.MinIndex = max(self.MinIndex, 0)

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   145

    # Return current state of buffer

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    def Current(self):

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        return self.Buffer[self.CurrentIndex]

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   149

    # Change current state to previous in buffer and return new current state

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    def Previous(self):

   151

        if self.CurrentIndex != self.MinIndex:

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            self.CurrentIndex = (self.CurrentIndex - 1) % UNDO_BUFFER_LENGTH

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            return self.Buffer[self.CurrentIndex]

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        return None

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   156

    # Change current state to next in buffer and return new current state

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    def Next(self):

   158

        if self.CurrentIndex != self.MaxIndex:

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            self.CurrentIndex = (self.CurrentIndex + 1) % UNDO_BUFFER_LENGTH

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            return self.Buffer[self.CurrentIndex]

   161

        return None

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   163

    # Return True if current state is the first in buffer

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    def IsFirst(self):

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        return self.CurrentIndex == self.MinIndex

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   167

    # Return True if current state is the last in buffer

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    def IsLast(self):

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        return self.CurrentIndex == self.MaxIndex

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   171

    # Note that current state is saved

   172

    def CurrentSaved(self):

   173

        self.LastSave = self.CurrentIndex

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    # Return True if current state is saved

   176

    def IsCurrentSaved(self):

   177

        return self.LastSave == self.CurrentIndex

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   179

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#-------------------------------------------------------------------------------

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#                           Controler for PLCOpenEditor

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#-------------------------------------------------------------------------------

   183

   184

"""

   185

Class which controls the operations made on the plcopen model and answers to view requests

   186

"""

   187

class PLCControler:

   188

   189

    # Create a new PLCControler

   190

    def __init__(self):

   191

        self.LastNewIndex = 0

   192

        self.Reset()

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   194

    # Reset PLCControler internal variables

   195

    def Reset(self):

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        self.Project = None

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        self.ProjectBufferEnabled = True

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        self.ProjectBuffer = None

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        self.ProjectSaved = True

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        self.Buffering = False

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        self.FilePath = ""

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        self.FileName = ""

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        self.ProgramChunks = []

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        self.ProgramOffset = 0

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        self.NextCompiledProject = None

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        self.CurrentCompiledProject = None

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        self.PluginTypes = []

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        self.ProgramFilePath = ""

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   210

    def GetQualifierTypes(self):

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        return plcopen.QualifierList

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   213

    def GetProject(self, debug = False):

   214

        if debug and self.CurrentCompiledProject is not None:

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            return self.CurrentCompiledProject

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        else:

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            return self.Project

   218

   219

#-------------------------------------------------------------------------------

   220

#                         Project management functions

   221

#-------------------------------------------------------------------------------

   222

   223

    # Return if a project is opened

   224

    def HasOpenedProject(self):

   225

        return self.Project is not None

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   227

    # Create a new project by replacing the current one

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    def CreateNewProject(self, properties):

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        # Create the project

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        self.Project = plcopen.project()

   231

        properties["creationDateTime"] = datetime.datetime(*localtime()[:6])

   232

        self.Project.setfileHeader(properties)

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        self.Project.setcontentHeader(properties)

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        self.SetFilePath("")

   235

        # Initialize the project buffer

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        self.CreateProjectBuffer(False)

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        self.ProgramChunks = []

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        self.ProgramOffset = 0

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        self.NextCompiledProject = self.Copy(self.Project)

   240

        self.CurrentCompiledProject = None

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        self.Buffering = False

   242

   243

    # Return project data type names

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    def GetProjectDataTypeNames(self, debug = False):

   245

        project = self.GetProject(debug)

   246

        if project is not None:

   247

            return [datatype.getname() for datatype in project.getdataTypes()]

   248

        return []

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   250

    # Return project pou names

   251

    def GetProjectPouNames(self, debug = False):

   252

        project = self.GetProject(debug)

   253

        if project is not None:

   254

            return [pou.getname() for pou in project.getpous()]

   255

        return []

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   257

    # Return project pou names

   258

    def GetProjectConfigNames(self, debug = False):

   259

        project = self.GetProject(debug)

   260

        if project is not None:

   261

            return [config.getname() for config in project.getconfigurations()]

   262

        return []

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   264

    # Return project pou variables

   265

    def GetProjectPouVariables(self, pou_name = None, debug = False):

   266

        variables = []

   267

        project = self.GetProject(debug)

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        if project is not None:

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            for pou in project.getpous():

   270

                if pou_name is None or pou_name == pou.getname():

   271

                    variables.extend([var["Name"] for var in self.GetPouInterfaceVars(pou, debug)])

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                    for transition in pou.gettransitionList():

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                        variables.append(transition.getname())

   274

                    for action in pou.getactionList():

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                        variables.append(action.getname())

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        return variables

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   278

    # Return file path if project is an open file

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    def GetFilePath(self):

   280

        return self.FilePath

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   282

    # Return file path if project is an open file

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    def GetProgramFilePath(self):

   284

        return self.ProgramFilePath

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   286

    # Return file name and point out if file is up to date

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    def GetFilename(self):

   288

        if self.Project is not None:

   289

            if self.ProjectIsSaved():

   290

                return self.FileName

   291

            else:

   292

                return "~%s~"%self.FileName

   293

        return ""

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   295

    # Change file path and save file name or create a default one if file path not defined

   296

    def SetFilePath(self, filepath):

   297

        self.FilePath = filepath

   298

        if filepath == "":

   299

            self.LastNewIndex += 1

   300

            self.FileName = _("Unnamed%d")%self.LastNewIndex

   301

        else:

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            self.FileName = os.path.splitext(os.path.basename(filepath))[0]

   303

   304

    # Change project properties

   305

    def SetProjectProperties(self, name = None, properties = None):

   306

        if self.Project is not None:

   307

            if name is not None:

   308

                self.Project.setname(name)

   309

            if properties is not None:

   310

                self.Project.setfileHeader(properties)

   311

                self.Project.setcontentHeader(properties)

   312

            if name is not None or properties is not None:

   313

                self.BufferProject()

   322

    # Return project properties

   323

    def GetProjectProperties(self, debug = False):

   324

        project = self.GetProject(debug)

   325

        if project is not None:

   326

            properties = project.getfileHeader()

   327

            properties.update(project.getcontentHeader())

   328

            return properties

   329

        return None

   330

   331

    # Return project informations

   332

    def GetProjectInfos(self, debug = False):

   333

        project = self.GetProject(debug)

   334

        if project is not None:

   335

            infos = {"name": project.getname(), "type": ITEM_PROJECT}

   336

            datatypes = {"name": DATA_TYPES, "type": ITEM_DATATYPES, "values":[]}

   337

            for datatype in project.getdataTypes():

   338

                datatypes["values"].append({"name": datatype.getname(), "type": ITEM_DATATYPE, 

   339

                    "tagname": self.ComputeDataTypeName(datatype.getname()), "values": []})

   340

            pou_types = {"function": {"name": FUNCTIONS, "type": ITEM_FUNCTION, "values":[]},

   341

                         "functionBlock": {"name": FUNCTION_BLOCKS, "type": ITEM_FUNCTIONBLOCK, "values":[]},

   342

                         "program": {"name": PROGRAMS, "type": ITEM_PROGRAM, "values":[]}}

   343

            for pou in project.getpous():

   344

                pou_type = pou.getpouType()

   345

                pou_infos = {"name": pou.getname(), "type": ITEM_POU,

   346

                             "tagname": self.ComputePouName(pou.getname())}

   347

                pou_values = []

   348

                if pou.getbodyType() == "SFC":

   349

                    transitions = []

   350

                    for transition in pou.gettransitionList():

   351

                        transitions.append({"name": transition.getname(), "type": ITEM_TRANSITION, 

   352

                            "tagname": self.ComputePouTransitionName(pou.getname(), transition.getname()), 

   353

                            "values": []})

   354

                    pou_values.append({"name": TRANSITIONS, "type": ITEM_TRANSITIONS, "values": transitions})

   355

                    actions = []

   356

                    for action in pou.getactionList():

   357

                        actions.append({"name": action.getname(), "type": ITEM_ACTION, 

   358

                            "tagname": self.ComputePouActionName(pou.getname(), action.getname()), 

   359

                            "values": []})

   360

                    pou_values.append({"name": ACTIONS, "type": ITEM_ACTIONS, "values": actions})

   361

                if pou_type in pou_types:

   362

                    pou_infos["values"] = pou_values

   363

                    pou_types[pou_type]["values"].append(pou_infos)

   364

            configurations = {"name": CONFIGURATIONS, "type": ITEM_CONFIGURATIONS, "values": []}

   365

            for config in project.getconfigurations():

   366

                config_name = config.getname()

   367

                config_infos = {"name": config_name, "type": ITEM_CONFIGURATION, 

   368

                    "tagname": self.ComputeConfigurationName(config.getname()), 

   369

                    "values": []}

   370

                resources = {"name": RESOURCES, "type": ITEM_RESOURCES, "values": []}

   371

                for resource in config.getresource():

   372

                    resource_name = resource.getname()

   373

                    resource_infos = {"name": resource_name, "type": ITEM_RESOURCE, 

   374

                        "tagname": self.ComputeConfigurationResourceName(config.getname(), resource.getname()), 

   375

                        "values": []}

   376

                    resources["values"].append(resource_infos)

   377

                config_infos["values"] = [resources]

   378

                configurations["values"].append(config_infos)

   379

            infos["values"] = [{"name": PROPERTIES, "type": ITEM_PROPERTIES, "values": []},

   380

                               datatypes, pou_types["function"], pou_types["functionBlock"], 

   381

                               pou_types["program"], configurations]

   382

            return infos

   383

        return None

   384

   385

    # Return project topology informations

   386

    def GetProjectTopology(self, debug = False):

   387

        project = self.GetProject(debug)

   388

        if project is not None:

   389

            infos = {"name": project.getname(), "type": ITEM_PROJECT, "values" : []}

   390

            for config in project.getconfigurations():

   391

                config_infos = {"name" : config.getname(), "type": ITEM_CONFIGURATION, "values" : []}

   392

                for resource in config.getresource():

   393

                    resource_infos = {"name" : resource.getname(), "type": ITEM_RESOURCE, "values": []}

   394

                    for task in resource.gettask():

   395

                        for pou in task.getpouInstance():

   396

                            instance_infos = self.GetPouTopology(pou.getname(), pou.gettypeName(), debug=debug)

   397

                            if instance_infos is not None:

   398

                                resource_infos["values"].append(instance_infos)

   399

                    for pou in resource.getpouInstance():

   400

                        instance_infos = self.GetPouTopology(pou.getname(), pou.gettypeName(), debug=debug)

   401

                        if instance_infos is not None:

   402

                            resource_infos["values"].append(instance_infos)

   403

                    for varlist in resource.getglobalVars():

   404

                        for variable in varlist.getvariable():

   405

                            vartype_content = variable.gettype().getcontent()

   406

                            if vartype_content["name"] == "derived":

   407

                                var_infos = self.GetPouTopology(variable.getname(), vartype_content["value"].getname(), True, debug)

   408

                                if var_infos is not None:

   409

                                    resource_infos["values"].append(var_infos)

   410

                            elif vartype_content["name"] in ["string", "wstring"]:

   411

                                resource_infos["values"].append({"name" : variable.getname(), 

   412

                                                                 "elmt_type" : vartype_content["name"].upper(),

   413

                                                                 "type" : ITEM_VAR_GLOBAL, "values" : []})

   414

                            else:

   415

                                resource_infos["values"].append({"name" : variable.getname(), 

   416

                                                                 "elmt_type" : vartype_content["name"], 

   417

                                                                 "type" : ITEM_VAR_GLOBAL, "values" : []})

   418

                    config_infos["values"].append(resource_infos)

   419

                for varlist in config.getglobalVars():

   420

                    for variable in varlist.getvariable():

   421

                        vartype_content = variable.gettype().getcontent()

   422

                        if vartype_content["name"] == "derived":

   423

                            var_infos = self.GetPouTopology(variable.getname(), vartype_content["value"].getname(), True, debug)

   424

                            if var_infos is not None:

   425

                                config_infos["values"].append(var_infos)

   426

                        elif vartype_content["name"] in ["string", "wstring"]:

   427

                            config_infos["values"].append({"name" : variable.getname(), 

   428

                                                           "elmt_type" : vartype_content["name"].upper(), 

   429

                                                           "type" : ITEM_VAR_GLOBAL, "values" : []})

   430

                        else:

   431

                            config_infos["values"].append({"name" : variable.getname(),

   432

                                                           "elmt_type" : vartype_content["name"], 

   433

                                                           "type" : ITEM_VAR_GLOBAL, "values" : []})

   434

                infos["values"].append(config_infos)

   435

            return infos

   436

        return None

   437

   438

    # Return pou topology informations

   439

    def GetPouTopology(self, name, type, global_var = False, debug = False):

   440

        project = self.GetProject(debug)

   441

        if project is not None:

   442

            pou = project.getpou(type)

   443

            if pou is not None:

   444

                pou_type = pou.getpouType()

   445

                if pou_type == "function":

   446

                    return None

   447

                elif pou_type == "program":

   448

                    pou_infos = {"name" : name, "elmt_type" : type, "type" : ITEM_PROGRAM, 

   449

                                 "tagname" : self.ComputePouName(pou.getname()), "values" : []}

   450

                else:

   451

                    pou_infos = {"name" : name, "elmt_type" : type, "type" : ITEM_FUNCTIONBLOCK, 

   452

                                 "tagname" : self.ComputePouName(pou.getname()), "values" : []}

   453

                if pou.getbodyType() == "SFC":

   454

                    for transition in pou.gettransitionList():

   455

                        pou_infos["values"].append({"name" : transition.getname(), 

   456

                            "elmt_type" : "TRANSITION", "type" : ITEM_TRANSITION, 

   457

                            "tagname" : self.ComputePouActionName(pou.getname(), transition.getname()),

   458

                            "values" : []})

   459

                    for action in pou.getactionList():

   460

                        pou_infos["values"].append({"name": action.getname(), 

   461

                            "elmt_type" : "ACTION", "type": ITEM_ACTION, 

   462

                            "tagname" : self.ComputePouActionName(pou.getname(), action.getname()),

   463

                            "values" : []})

   464

                if pou.interface:

   465

                    # Extract variables from every varLists

   466

                    for type, varlist in pou.getvars():

   467

                        infos = VAR_CLASS_INFOS.get(type, None)

   468

                        if infos is not None:

   469

                            current_var_class = infos[1]

   470

                        else:

   471

                            current_var_class = ITEM_VAR_LOCAL

   472

                        for variable in varlist.getvariable():

   473

                            vartype_content = variable.gettype().getcontent()

   474

                            if vartype_content["name"] == "derived":

   475

                                var_infos = self.GetPouTopology(variable.getname(), vartype_content["value"].getname())

   476

                                if var_infos is not None:

   477

                                    pou_infos["values"].append(var_infos)

   478

                            elif vartype_content["name"] in ["string", "wstring"]:

   479

                                pou_infos["values"].append({"name" : variable.getname(), 

   480

                                                            "elmt_type" : vartype_content["name"].upper(), 

   481

                                                            "type" : current_var_class, "values" : []})

   482

                            else:

   483

                                pou_infos["values"].append({"name" : variable.getname(), 

   484

                                                            "elmt_type" : vartype_content["name"], 

   485

                                                            "type" : current_var_class, "values" : []})

   486

                return pou_infos

   487

            block_infos = self.GetBlockType(type, debug = debug)

   488

            if block_infos is not None:

   489

                if block_infos["type"] == "function":

   490

                    return None

   491

                elif block_infos["type"] == "program":

   492

                    pou_infos = {"name" : name, "elmt_type" : type, "type" : ITEM_PROGRAM, "values" : []}

   493

                else:

   494

                    pou_infos = {"name" : name, "elmt_type" : type, "type" : ITEM_FUNCTIONBLOCK, "values" : []}

   495

                for varname, vartype, varmodifier in block_infos["inputs"]:

   496

                    pou_infos["values"].append({"name" : varname, "elmt_type" : vartype, "type" : ITEM_VAR_INPUT, "values" : []})

   497

                for varname, vartype, varmodifier in block_infos["outputs"]:

   498