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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

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from xml.dom import minidom

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from types import StringType, UnicodeType, TupleType

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from lxml import etree

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from copy import deepcopy

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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 *

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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 = {

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    "Local":    ("localVars",    ITEM_VAR_LOCAL),

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    "Global":   ("globalVars",   ITEM_VAR_GLOBAL),

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    "External": ("externalVars", ITEM_VAR_EXTERNAL),

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    "Temp":     ("tempVars",     ITEM_VAR_TEMP),

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    "Input":    ("inputVars",    ITEM_VAR_INPUT),

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    "Output":   ("outputVars",   ITEM_VAR_OUTPUT),

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    "InOut":    ("inOutVars",    ITEM_VAR_INOUT)}

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POU_TYPES = {"program": ITEM_PROGRAM,

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             "functionBlock": ITEM_FUNCTIONBLOCK,

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             "function": ITEM_FUNCTION,

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            }

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LOCATIONS_ITEMS = [LOCATION_CONFNODE,

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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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#                 Helpers object for generating pou var list

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

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def compute_dimensions(el):

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    return [

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        (dimension.get("lower"), dimension.get("upper"))

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        for dimension in el.findall("dimension")]

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def extract_param(el):

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    if el.tag == "Type" and el.text is None:

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        array = el.find("array")

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        return ('array', array.text, compute_dimensions(array))

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    elif el.tag == "Tree":

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        return generate_var_tree(el)

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    elif el.tag == "Edit":

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        return el.text == "True"

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    elif el.text is None:

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        return ''

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    return el.text

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def generate_var_tree(tree):

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    return ([

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        (var.get("name"), var.text, generate_var_tree(var))

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         for var in tree.findall("var")],

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        compute_dimensions(tree))

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class AddVariable(etree.XSLTExtension):

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    def __init__(self, variables):

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        etree.XSLTExtension.__init__(self)

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        self.Variables = variables

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    def execute(self, context, self_node, input_node, output_parent):

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        infos = etree.Element('var_infos')

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        self.process_children(context, infos)

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        self.Variables.append(

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            {el.tag.replace("_", " "): extract_param(el) for el in infos})

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class VarTree(etree.XSLTExtension):

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    def __init__(self, controller, debug):

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        etree.XSLTExtension.__init__(self)

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        self.Controller = controller

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        self.Debug = debug

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    def execute(self, context, self_node, input_node, output_parent):

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        typename = input_node.get("name")

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        pou_infos = self.Controller.GetPou(typename, self.Debug)

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        if pou_infos is not None:

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            self.apply_templates(context, pou_infos, output_parent)

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            return

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        datatype_infos = self.Controller.GetDataType(typename, self.Debug)

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        if datatype_infos is not None:

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            self.apply_templates(context, datatype_infos, output_parent)

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            return

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class VarIsEdited(etree.XSLTExtension):

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    def __init__(self, controller, debug):

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        etree.XSLTExtension.__init__(self)

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        self.Controller = controller

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        self.Debug = debug

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    def execute(self, context, self_node, input_node, output_parent):

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        typename = input_node.get("name")

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        output_parent.text = str(

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            self.Controller.GetPou(typename, self.Debug) is None)

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variables_infos_xslt = etree.parse(

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    os.path.join(ScriptDirectory, "plcopen", "variables_infos.xslt"))

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

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#            Helpers object for generating pou variable instance list

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

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def class_extraction(el, prt):

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    if prt in ["pou", "variable"]:

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        pou_type = POU_TYPES.get(el.text)

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        if pou_type is not None:

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            return pou_type

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        return VAR_CLASS_INFOS[el.text][1]

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    return {

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        "configuration": ITEM_CONFIGURATION,

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        "resource": ITEM_RESOURCE,

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        "action": ITEM_ACTION,

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        "transition": ITEM_TRANSITION,

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        "program": ITEM_PROGRAM}.get(prt)

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PARAM_VALUE_EXTRACTION = {

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    "name": lambda el, prt: el.text,

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    "class": class_extraction,

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    "type": lambda el, prt: None if el.text == "None" else el.text,

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    "edit": lambda el, prt: el.text == "True",

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    "debug": lambda el, prt: el.text == "True",

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    "variables": lambda el, prt: [

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        compute_instance_tree(chld)

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        for chld in el]}

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def compute_instance_tree(tree):

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    return {el.tag:

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        PARAM_VALUE_EXTRACTION[el.tag](el, tree.tag)

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        for el in tree}

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class IsEdited(etree.XSLTExtension):

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    def __init__(self, controller, debug):

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        etree.XSLTExtension.__init__(self)

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        self.Controller = controller

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        self.Debug = debug

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    def execute(self, context, self_node, input_node, output_parent):

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        typename = input_node.get("name")

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        project = self.Controller.GetProject(self.Debug)

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        output_parent.text = str(project.getpou(typename) is not None)

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class IsDebugged(etree.XSLTExtension):

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    def __init__(self, controller, debug):

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        etree.XSLTExtension.__init__(self)

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        self.Controller = controller

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        self.Debug = debug

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    def execute(self, context, self_node, input_node, output_parent):

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        typename = input_node.get("name")

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        project = self.Controller.GetProject(self.Debug)

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        pou_infos = project.getpou(typename)

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        if pou_infos is not None:

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            self.apply_templates(context, pou_infos, output_parent)

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            return

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        datatype_infos = self.Controller.GetDataType(typename, self.Debug)

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        if datatype_infos is not None:

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            self.apply_templates(context, datatype_infos, output_parent)

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            return

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        output_parent.text = "False"

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class PouVariableClass(etree.XSLTExtension):

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    def __init__(self, controller, debug):

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        etree.XSLTExtension.__init__(self)

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        self.Controller = controller

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        self.Debug = debug

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    def execute(self, context, self_node, input_node, output_parent):

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        pou_infos = self.Controller.GetPou(input_node.get("name"), self.Debug)

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        if pou_infos is not None:

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            self.apply_templates(context, pou_infos, output_parent)

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            return

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        self.process_children(context, output_parent)

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pou_variables_xslt = etree.parse(

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    os.path.join(ScriptDirectory, "plcopen", "pou_variables.xslt"))

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

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#            Helpers object for generating instances path list

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

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class InstanceDefinition(etree.XSLTExtension):

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    def __init__(self, controller, debug):

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        etree.XSLTExtension.__init__(self)

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        self.Controller = controller

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        self.Debug = debug

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    def execute(self, context, self_node, input_node, output_parent):

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        instance_infos = etree.Element('infos')

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        self.process_children(context, instance_infos)

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        pou_infos = self.Controller.GetPou(instance_infos.get("name"), self.Debug)

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        if pou_infos is not None:

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            pou_instance = etree.Element('pou_instance',

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                pou_path=instance_infos.get("path"))

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            pou_instance.append(deepcopy(pou_infos))

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            self.apply_templates(context, pou_instance, output_parent)

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            return

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        datatype_infos = self.Controller.GetDataType(instance_infos.get("name"), self.Debug)

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        if datatype_infos is not None:

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            datatype_instance = etree.Element('datatype_instance',

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                datatype_path=instance_infos.get("path"))

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            datatype_instance.append(deepcopy(datatype_infos))

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            self.apply_templates(context, datatype_instance, output_parent)

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            return

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instances_path_xslt = etree.parse(

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    os.path.join(ScriptDirectory, "plcopen", "instances_path.xslt"))

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

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#            Helpers object for generating instance tagname

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

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class InstanceTagName(etree.XSLTExtension):

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    def __init__(self, controller):

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        etree.XSLTExtension.__init__(self)

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        self.Controller = controller

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    def GetTagName(self, infos):

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        return ""

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    def execute(self, context, self_node, input_node, output_parent):

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        tagname_infos = etree.Element('infos')

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        self.process_children(context, tagname_infos)

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        tagname = etree.Element('tagname')

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        tagname.text = self.GetTagName(tagname_infos)

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        try:

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            output_parent.append(tagname)

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        except:

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            pass

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class ConfigTagName(InstanceTagName):

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    def GetTagName(self, infos):

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        return self.Controller.ComputeConfigurationName(infos.get("name"))

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class ResourceTagName(InstanceTagName):

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    def GetTagName(self, infos):

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        return self.Controller.ComputeConfigurationResourceName(

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            infos.get("config_name"), infos.get("name"))

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class PouTagName(InstanceTagName):

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    def GetTagName(self, infos):

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        return self.Controller.ComputePouName(infos.get("name"))

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class ActionTagName(InstanceTagName):

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    def GetTagName(self, infos):

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        return self.Controller.ComputePouActionName(

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            infos.get("pou_name"), infos.get("name"))

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class TransitionTagName(InstanceTagName):

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    def GetTagName(self, infos):

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        return self.Controller.ComputePouTransitionName(

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            infos.get("pou_name"), infos.get("name"))

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instance_tagname_xslt = etree.parse(

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    os.path.join(ScriptDirectory, "plcopen", "instance_tagname.xslt"))

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