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__ge__(self,n): return self.value >= n def __le__(self,n): return self.value <= n def __trunc__(self): return self.value def __int__(self): try: i = int(self.value) except: i = 0 return i def toggle(self): if self.latched == False: self.value = not self.value def properties(self): ds = self.name + "\n" + str(self.value) + "\n" ds += "Force: " if self.latched: ds += "on" else: ds += "off" ds += "\nDescription:" + self.description return ds class block(object): def __init__(self,function = block_functions.DEFAULT,parent=None,output=False,rung=None): self.faulted = False self.function = function() self.name = self.function.name self.arguments = [] #self.display = None #self.frm2 = None self.rung=rung #self.popupparent = None #if parent: # #self.display_new(parent) #if output: # #self.display_update_output() #else: # #self.display_update() def status(self): return self.function.on(*self.arguments) def run(self,on=True): try: if on: self.function.on(*self.arguments) else: self.function.off(*self.arguments) self.faulted = False except: self.faulted = True raise def __nonzero__(self):#evaluates the decision block return self.status() def properties(self): ds = self.function.properties() + "\n\n" return ds class rung(object): def __init__(self): self.inputs = [] self.outputs = [] def run(self): conds = map(lambda x:x.status(),self.inputs) if all(conds) or not self.inputs: map(lambda x:x.run(),self.outputs) else: map(lambda x:x.run(on=False),self.outputs) def closeblock(bit): b = block() b.arguments.append(bit) return b if __name__ == '__main__': I1 = create_binary_array(10,'I1:0/') b1 = block() b1.function = func_and b1.arguments.append(I1[0]) b1.arguments.append(I1[1]) I1[0].set(True) I1[1].set(True) a = value_word(0) out1 = block() out1.function = func_add out1.arguments.append(a) out1.arguments.append(1) out1.run() r = rung() r.inputs += [b1] r.outputs += [out1] r.run() I1[0].set(False) r.run() pyladderlogic.py0000755000175000017500000000004511677227637012722 0ustar danodano#!/usr/bin/python import tkintergui test.xml0000644000175000017500000000131711675237203011213 0ustar danodano I0:1 bool 0 I0:2 bool 0 O0:0 bool 0 And I0:1 I0:2 Close O0:0 test3.xml0000644000175000017500000000220011675237203011266 0ustar danodanoI0:0/0boolTrueI0:0/1boolFalseI0:0/2boolTrueI0:0/3boolTrueI0:0/4boolFalseI0:0/5boolFalseI0:0/6boolTrueI0:0/7boolFalseI0:0/8boolFalseI0:0/9boolFalseAndNotI0:0/1I0:0/0CloseI0:0/3tkintergui.py0000644000175000017500000002505711703165500012250 0ustar danodano#Created by dan december 2011. www.danomagnum.com #from Tkinter import Tk, Frame, BOTH, RIGHT, LEFT, RAISED, Label, IntVar, BooleanVar, X, RAISED, Menu, Scrollbar,Y, Scrollbar, TclError, N, S from Tkinter import * #from ttk import Button, Style, Scale #from ttk import Scale import tkinterladder as ladder #from .ladder import tkinterladder as ladder import time import pickle import copy import tkFileDialog import tkSimpleDialog import tkxmltoladder as xmltoladder import datetime FAULTDEBUG = FALSE FORMATS = [('Python Ladder Logic','*.pll')] FORMATSXML = [('Python Ladder Logic XML files','*.xml')] class AutoScrollbar(Scrollbar): # a scrollbar that hides itself if it's not needed. only # works if you use the grid geometry manager. def set(self, lo, hi): if float(lo) <= 0.0 and float(hi) >= 1.0: # grid_remove is currently missing from Tkinter! self.tk.call("grid", "remove", self) else: self.grid() Scrollbar.set(self, lo, hi) def pack(self, **kw): raise TclError, "cannot use pack with this widget" def place(self, **kw): raise TclError, "cannot use place with this widget" class IOWindow(tkSimpleDialog.Dialog): def body(self, master): self.vartype = StringVar() Label(master, text="Type:").grid(row=0) Radiobutton(master, text="Boolean", variable=self.vartype, value='bool').grid(row=0,column=1) Radiobutton(master, text="Integer", variable=self.vartype, value='int').grid(row=0,column=2) Radiobutton(master, text="String", variable=self.vartype, value='str').grid(row=0,column=3) self.vartype.set('bool') Label(master, text="Name:").grid(row=1) self.name = Entry(master) self.name.grid(row=1, column=1) Label(master, text="Value:").grid(row=2) self.value = Entry(master) self.value.insert(0,0) self.value.grid(row=2, column=1) self.result = None return self.name # initial focus def apply(self): val = False vartype = self.vartype.get() print vartype val2 = self.value.get() if vartype == 'bool': val = bool(val2) elif vartype == 'int': val = int(val2) elif vartype == 'str': val = str(val2) print val self.result = [val, vartype,self.name.get()] #print first, second class FaultWindow(tkSimpleDialog.Dialog): def __init__(self, parent,faults = [], title = 'Fault'): Toplevel.__init__(self, parent) self.transient(parent) self.faults = faults if title: self.title(title) self.parent = parent self.result = None body = Frame(self) self.initial_focus = self.body(body) body.pack(padx=5, pady=5,fill=BOTH,expand=1) self.buttonbox() self.grab_set() if not self.initial_focus: self.initial_focus = self self.protocol("WM_DELETE_WINDOW", self.cancel) self.geometry("+%d+%d" % (parent.winfo_rootx()+50, parent.winfo_rooty()+50)) self.initial_focus.focus_set() self.wait_window(self) def body(self, master): Label(master, text="Faults:").pack(side=TOP) self.faultlist = Listbox(master) self.faultlist.pack(side=TOP,fill=BOTH,expand=1) for f in self.faults: self.faultlist.insert(END,f) self.result = None return self.faultlist def apply(self): pass #print first, second class MainWindow(Frame): def __init__(self, parent): Frame.__init__(self, parent, background="white") self.parent = parent self.rungs = [] self.exspeed = 100 self.paused = False self.pausedvar = BooleanVar() self.faulted = False self.faultvar = BooleanVar() self.faults = [] self.pausedvar.set(self.paused) self.faultvar.set(self.faulted) self.initUI() self.updatesize = False self.calculating = False def initUI(self): #this sets up the interface, and then goes into the program part #self.parent.title("PyLadderLogic") #self.style = Style() #self.style.theme_use("default") #self.pack(fill=BOTH,expand=1) self.grid(row=0,column=0,sticky='news') ladder.fix_scroll = self.scrollsizeupdate ladder.remove_row = self.removerows #sc = Scrollbar(self) #sc.pack(side=RIGHT,fill=Y) topperfrm = Frame(self) topperfrm.pack(fill=X,expand=1) spdlbl = Label(topperfrm,text="Speed^-1") spdlbl.pack(side=LEFT) scale = Scale(topperfrm, from_=50, to=1000, command=self.onScale,orient=HORIZONTAL) scale.set(100) scale.pack(side=LEFT) spdlbl = Checkbutton(topperfrm,text="Pause",command=self.playpause, variable=self.pausedvar,indicatoron=0) spdlbl.pack(side=RIGHT) self.faultbutton = Checkbutton(topperfrm,text="Fault",command=self.clearfault, variable=self.faultvar,indicatoron=0,fg='black') self.faultbutton.pack(side=RIGHT) button1 = Button(topperfrm,text="Run one loop",command=self.runone) button1.pack(side=RIGHT) button1 = Button(topperfrm,text="Update",command=self.toggleit) button1.pack(side=RIGHT) topfrm = Frame(self) topfrm.pack(fill=X,expand=1) self.popup = Menu(root,tearoff=0) self.popup.add_command(label='Add Rung',command=self.addrung) self.popup.add_command(label='Add IO',command=self.addIO) self.popup.add_command(label='Load XML',command=self.loadxml) self.popup.add_command(label='Save XML',command=self.savexml) root.config(menu=self.popup) #this section defines the "bits" in the "plc" and a few 10-bit words #IO = ladder.value_word(0,"I0:0") #IO.bits_display_new(topfrm) #self.IO = IO.bits() self.IO = [] #self.IO[0].set(True) #self.IO[1].set(True) #self.IO[2].set(True) #self.IO[6].set(True) #ladder.itemlist += self.IO self.dataforms = [topfrm] def addrung(self): r = ladder.rung() self.rungs.append(r) r.display_new(self) def addIO(self): w = IOWindow(self) if w.result is not None: [value, vartype, name] = w.result r = ladder.IO(value, name, vartype) self.IO.append(r) r.display_new(self.dataforms[0]) ladder.itemlist = self.IO def toggleit(self): #this function is named this because I just kept reusing it, so no reason. #self.bv.set(random.randint(0,1023)) #self.bv.display_update() #self.blk1.display_update() #for r in self.rungs: #r.display_update() #self.update_idletasks() #canvas.config(scrollregion=canvas.bbox("all")) self.removedata() def runone(self): #do one run through the ladder self.paused = True self.pausedvar.set(self.paused) for r in self.rungs: r.run() r.display_update() def onScale(self, val): #set the speed speed = int(float(val)) self.exspeed = int(float(val)) def playpause(self): #toggle the play/pause self.paused = not self.paused self.pausedvar.set(self.paused) def clearfault(self): #clears any faults w = FaultWindow(self,self.faults) self.faulted = False self.faultvar.set(self.faulted) self.faultbutton.configure(fg='black') def scrollsizeupdate(self): #canvas.config(scrollregion=canvas.bbox("all")) self.updatesize=True def removerows(self,row): pausestate = self.paused self.paused = True self.pausedvar.set(self.paused) while self.calculating: time.sleep(.1) self.rungs.remove(row) row.__del__() self.paused = pausestate self.pausedvar.set(self.paused) def removedata(self): pausestate = self.paused self.paused = True self.pausedvar.set(self.paused) while self.calculating: time.sleep(.1) self.IO = [] ladder.itemlist = [] dfs = self.dataforms[:] for f in dfs: f.destroy() self.dataforms = [] self.paused = pausestate self.pausedvar.set(self.paused) def savexml(self): filename = tkFileDialog.asksaveasfilename(parent=root,filetypes=FORMATSXML,title="Save") if not filename: return False pausestate = self.paused self.paused = True self.pausedvar.set(self.paused) while self.calculating: time.sleep(.1) xmltoladder.create_xml(self.rungs,self.IO,filename) self.paused = pausestate self.pausedvar.set(self.paused) def loadxml(self): filename = tkFileDialog.askopenfilename(parent=root,filetypes=FORMATSXML,title="Save") if not filename: return False rows = self.rungs[:] for r in rows: self.removerows(r) self.removedata() f = open(filename,'r') [self.rungs, self.IO] = xmltoladder.create_ladder(f) f.close() self.reinit() self.updatesize=True def reinit(self): ladder.itemlist = [] topfrm = Frame(self) topfrm.pack(fill=X,expand=1) for i in self.IO: i.display_new(topfrm) ladder.itemlist += self.IO self.dataforms.append(topfrm) for r in self.rungs: r.display_new(self) r.display_update() def calculatron(*args): #this is what automatically executes the logic at whatever interval is set app = args[0] if not any((app.paused, app.faulted)): app.calculating = True for r in app.rungs: try: r.run() r.display_update() except Exception as e: app.faulted = True app.faultvar.set(True) app.faultbutton.configure(fg='red') app.faults.append(e.message) if FAULTDEBUG: raise app.calculating = False else: pass root.after(app.exspeed,calculatron,app) def scrollbarupdate(*args): app = args[0] if app.updatesize: canvas.config(scrollregion=canvas.bbox("all")) app.updatesize = False root.after(100,scrollbarupdate,app) def OnMouseWheel(event): d = 0 if event.num == 5 or event.delta == -120: d = 1 elif event.num == 4 or event.delta == 120: d = -1 canvas.yview("scroll", d, "units") root = Tk() vscrollbar = AutoScrollbar(root) vscrollbar.grid(row=0,column=1, sticky=N+S) hscrollbar = AutoScrollbar(root, orient=HORIZONTAL) hscrollbar.grid(row=1, column=0, sticky=E+W) canvas = Canvas(root, yscrollcommand=vscrollbar.set, xscrollcommand=hscrollbar.set,width=1000,height=300) canvas.grid(row=0, column=0, sticky=N+S+E+W) root.bind('', OnMouseWheel) root.bind('', OnMouseWheel) root.bind('', OnMouseWheel) vscrollbar.config(command=canvas.yview) hscrollbar.config(command=canvas.xview) root.grid_rowconfigure(0, weight=1) root.grid_columnconfigure(0,weight=1) frame = Frame(canvas) frame.rowconfigure(1, weight=1) frame.columnconfigure(1,weight=1) #rows = 5 #for i in range(1,rows): #for j in range(1,10): #button = Button(frame, padx=7, pady=7, text="[%d,%d]" % (i,j)) #button.grid(row=i, column=j, sticky='news') app = MainWindow(frame) canvas.create_window(0, 0, anchor=NW, window=frame) frame.update_idletasks() canvas.config(scrollregion=canvas.bbox("all")) app.update_idletasks() root.after(100,calculatron,app) root.after(100,scrollbarupdate,app) root.mainloop() tkinterladder.py0000644000175000017500000002550311703163104012711 0ustar danodano#Created by dan december 2011. www.danomagnum.com #from ttk import Label, Button#, Checkbutton, Style from Tkinter import StringVar, LEFT, RIGHT, BOTH, Frame, X, RAISED, IntVar, Menu, Checkbutton, Y, BooleanVar, Label, Button import tkMessageBox import tkSimpleDialog import block_functions import ladder TRUECOLOR = "green" FALSECOLOR = "red" FAULTCOLOR = "yellow" LATCHCOLOR = "blue" DEFAULTCOLOR = "black" fix_scroll = lambda x:x remove_row = lambda x:x functionlist = block_functions.BLOCK_FUNCTION_LIST itemlist = [] #need to fill this in to add stuff I guess class IO(ladder.IO): def __init__(self,value,name,typedesc,input=False,description=""): super(IO,self).__init__(value,name,typedesc,input,description) self.displayvariable = StringVar() if self.typedesc == 'bool': self.displayvalue = BooleanVar() elif self.typedesc == 'int': self.displayvalue = IntVar() else: self.displayvalue = StringVar() self.display = [] def prompt_for_value(self): if self.typedesc == 'int': result = tkSimpleDialog.askinteger(self.name,self.name,initialvalue=self.value,minvalue=0,maxvalue=1023) if result is not None: self.set(result) self.display_update() def delifparent(self,parent): displays = self.display[:] for d in displays: if d.master == parent: #I am a child of you, so I wll delete myself self.display.remove(d) d.destroy() if not self.display: del(self) def latchon(self): super(IO,self).latchon() self.display_update() def latchoff(self): super(IO,self).latchoff() self.display_update() def unlatch(self): super(IO,self).unlatch() self.display_update() def clicked(self): #super(IO,self).clicked() self.toggle_and_display() def toggle_and_display(self): self.toggle() self.display_update() def display_new(self,parent): self.display_update() b = Checkbutton(parent,textvariable=self.displayvariable,command=self.clicked,variable=self.displayvalue,indicatoron=0) b.pack(side=LEFT) self.display.append(b) self.popup = Menu(parent,tearoff=0) self.popup.add_command(label="force on",command=self.latchon) self.popup.add_command(label="force off",command=self.latchoff) self.popup.add_command(label="remove force",command=self.unlatch) self.popup.add_separator() self.popup.add_command(label="properties",command=self.properties_display) self.popup.add_command(label="Set",command=self.prompt_for_value) self.popup.add_command(label="description",command=self.setdesc) b.bind("",self.popup_menu) return b def popup_menu(self,event): try: self.popup.tk_popup(event.x_root,event.y_root,0) finally: self.popup.grab_release() def properties_display(self): ds = self.properties() tkMessageBox.showinfo(self.name,ds) def display_update(self): if self.display: for d in self.display: if self.latched: d.configure(foreground=LATCHCOLOR) else: d.configure(foreground=DEFAULTCOLOR) ds = self.name + "\n" + str(self.value) if self.description: ds += "\n" + self.description if self.displayvariable: self.displayvariable.set(ds) dv = None if self.typedesc == 'bool': dv = bool(self.value) elif self.typedesc == 'int': dv = int(self.value) else: dv = str(self.value) self.displayvalue.set(dv) def setdesc(self): result = tkSimpleDialog.askstring(self.name,self.name,initialvalue=self.description) if result is not None: self.description = result self.display_update() class block(ladder.block): def __init__(self,function = block_functions.DEFAULT,parent=None,output=False,rung=None): super(block,self).__init__(function,parent,output,rung) self.display = None self.frm2 = None self.popupparent = None if parent: self.display_new(parent) if output: self.display_update_output() else: self.display_update() def run(self,on=True): try: super(block,self).run(on) except: self.display_update() raise def delifparent(self,parent): if self.frm.master == parent: #I am a child of you, so I wll delete myself if self.frm2: self.frm2.destroy() for a in self.arguments: a.delifparent(self.frm) def removeblock(self,child): if child in self.arguments: self.arguments.remove(child) def display_new(self,parent): frm = Frame(parent,border=2,relief=RAISED,pady=5) frm2 = Frame(frm,border=1,relief=RAISED,) frm2.pack(fill=X) l = Label(frm2,text=self.function.__name__()) l.pack() for bit in self.arguments: bit.display_new(frm) frm.pack(side=LEFT) self.display = frm self.popupparent = parent self.popup = Menu(self.popupparent,tearoff=0,postcommand=self.updatemenu) addmenu = Menu(self.popup,tearoff=0) for item in itemlist: addmenu.add_command(label=item.name,command=self.additem(item)) self.popup.add_cascade(label="add argument",menu=addmenu) self.popup.add_command(label="properties",command=self.properties_display) self.popup.add_separator() self.popup.add_command(label="remove block",command=self.delblock) self.popup.add_separator() self.updatemenu() self.frm = frm frm.bind("",self.popup_menu) fix_scroll() def testing(self): print self.arguments print self.status() print self.function.on def properties_display(self): ds = self.properties() tkMessageBox.showinfo(self.name,ds) def updatemenu(self): self.popup.delete(5) self.popup.delete(4) self.popup.delete(3) self.popup.delete(2) self.popup.delete(1) self.popup.delete(1) self.popup.delete(1) addmenu = Menu(self.popup,tearoff=0) for item in itemlist: addmenu.add_command(label=item.name,command=self.additem(item)) for fnct in functionlist: addmenu.add_command(label=fnct.__name__,command=self.addsubblock(fnct)) self.popup.add_cascade(label="add argument",menu=addmenu) self.popup.add_command(label="properties",command=self.properties) self.popup.add_command(label="test",command=self.testing) self.popup.add_separator() self.popup.add_command(label="remove block",command=self.delblock) self.popup.add_separator() self.removeargsmenu = Menu(self.popup,tearoff=0) for item in self.arguments: self.removeargsmenu.add_command(label=item.name,command=self.removearg(item)) self.popup.add_cascade(label="remove argument",menu=self.removeargsmenu,) def addsubblock(self,fnct): return lambda:self.arguments.append(block(fnct,parent=self.frm,rung=self)) def removearg(self,item): return lambda:self.removearg2(item) def removearg2(self,item): item.delifparent(self.frm) self.arguments.remove(item) def additem(self,item): return lambda:self.additem2(item) def additem2(self,item): self.arguments.append(item) item.display_new(self.frm) fix_scroll() def delblock(self): if self.frm2: self.frm2.destroy() self.frm.destroy() def popup_menu(self,event): try: self.popup.tk_popup(event.x_root,event.y_root,0) finally: self.popup.grab_release() def display_update(self): if self.display: if self.faulted: self.display.configure(bg=FAULTCOLOR) elif self.status(): self.display.configure(bg=TRUECOLOR) else: self.display.configure(bg=FALSECOLOR) for bit in self.arguments: bit.display_update() def display_update_output(self): for bit in self.arguments: bit.display_update() class rung(ladder.rung): def __init__(self): super(rung,self).__init__() self.frminput = None self.frmoutput = None def __del__(self): for i in self.inputs: i.delifparent(self.frminput) for o in self.outputs: o.delifparent(self.frmoutput) self.frminput.destroy() self.frmoutput.destroy() self.frm.destroy() def run(self): super(rung,self).run() conds = map(lambda x:x.status(),self.inputs) if all(conds) or not self.inputs: if self.frminput: self.frminput.configure(bg=TRUECOLOR) else: if self.frminput: self.frminput.configure(bg=FALSECOLOR) def removeblock(self,child): if child in self.inputs: self.inputs.remove(child) elif child in self.outputs: self.outputs.remove(child) def display_new(self,parent): frm = Frame(parent,border=2,relief=RAISED) frmminheight = Frame(frm,height=20,width=1) frmminheight.pack(side=LEFT) self.frminput = Frame(frm,border=1,relief=RAISED) self.frmoutput = Frame(frm,border=1,relief=RAISED) self.frminput.pack(side=LEFT,fill=Y) self.frmoutput.pack(side=RIGHT,fill=Y) for inputblock in self.inputs: inputblock.display_new(self.frminput) for outputblock in self.outputs: outputblock.display_new(self.frmoutput) frm.pack(fill=X,expand=1) self.display = frm self.popup = Menu(parent,tearoff=0) self.inputmenu = Menu(self.popup,tearoff=0) self.outputmenu = Menu(self.popup,tearoff=0) for fnct in functionlist: self.inputmenu.add_command(label=fnct.__name__,command=self.addinput(fnct)) self.outputmenu.add_command(label=fnct.__name__,command=self.addoutput(fnct)) self.popup.add_cascade(label="add input",menu=self.inputmenu) self.popup.add_cascade(label="add output",menu=self.outputmenu) self.popup.add_separator() self.popup.add_command(label="remove rung",command=self.removerowclick) self.popup.add_command(label="new rung") self.popup.add_command(label="test",command=self.test) frm.bind("",self.popup_menu) self.frminput.bind("",self.popup_menu_input) fix_scroll() self.frm = frm def test(self): for i in self. inputs: i.test(self.frminput) def removerowclick(self): remove_row(self) def addinput(self,fnct): return lambda:self.inputs.append(block(fnct,parent=self.frminput,rung=self)) def addoutput(self,fnct): return lambda:self.outputs.append(block(fnct,parent=self.frmoutput,output=True)) def popup_menu(self,event): try: self.popup.tk_popup(event.x_root,event.y_root,0) finally: self.popup.grab_release() def popup_menu_input(self,event): try: self.inputmenu.tk_popup(event.x_root,event.y_root,0) finally: self.popup.grab_release() def display_update(self): for inputblock in self.inputs: inputblock.display_update() for outputblock in self.outputs: outputblock.display_update_output() def closeblock(bit): b = block() b.arguments.append(bit) return b if __name__ == '__main__': I1 = create_binary_array(10,'I1:0/') b1 = block() b1.function = func_and b1.arguments.append(I1[0]) b1.arguments.append(I1[1]) I1[0].set(True) I1[1].set(True) a = value_word(0) out1 = block() out1.function = func_add out1.arguments.append(a) out1.arguments.append(1) out1.run() r = rung() r.inputs += [b1] r.outputs += [out1] r.run() I1[0].set(False) r.run() tkxmltoladder.py0000644000175000017500000001153411677227637012760 0ustar danodanofrom xml.etree import ElementTree import tkinterladder as ladder import block_functions def block_from_xml(IOlist,block): newblock = ladder.block() funcxml = block.find('function') #print funcxml.text if funcxml is None: raise Warning('bad xml in a block, no function name' + str(block)) functxt = funcxml.text if block_functions.BLOCK_FUNCTION_DICT.has_key(functxt): newblock.function = block_functions.BLOCK_FUNCTION_DICT[functxt]() argsxml = block.find('arguments') for arg in argsxml.getchildren(): newargument = None if arg.tag == 'item': if IOlist.has_key(arg.text): newargument = IOlist[arg.text] else: raise Warning('bad xml in a block\'s arguments. Cannot resolve IO name: ' + arg.text) elif arg.tag == 'block': newargument = block_from_xml(IOlist,arg) else: raise Warning('bad xml in block\'s arguments. Not an item or block') if newargument is not None: newblock.arguments.append(newargument) return newblock def create_ladder(xmlfile): data = ElementTree.parse(xmlfile) ladderxml = data.getroot() #Set up IO IOxml = ladderxml.find('IO') IOlist = {} for item in IOxml.getchildren(): value = None valuetxt=None newIO = None if item.tag != 'item': Warning('bad xml in the IO section: expected an : ' + str(item.tag)) continue namexml = item.find('name') typexml = item.find('type') descxml = item.find('desc') valuexml = item.find('value') #if (not namexml) and (not typexml): #raise Warning('bad xml in the IO section: missing name or type: ' + str(item.tag)) #continue nametxt = namexml.text typetxt = typexml.text if not descxml: desctxt = '' else: desctxt = descxml.text if valuexml is not None: valuetxt = valuexml.text if typetxt=='int': value = int(valuetxt) elif typetxt=='str': value = str(valuetxt) elif typetxt=='bool': value = bool(valuetxt) else: value = valuetxt #print nametxt, newIO = ladder.IO(value,nametxt,typetxt,description=desctxt) #print newIO if newIO is not None: IOlist[nametxt] = newIO #print "-----" #rint IOlist #rint "-----" #Set up Rungs #Rungsxml = ladderxml.findall('Rung') Rungslist = ladderxml.findall('Rung') Rungs = [] for rung in Rungslist: #for item in Rungsxml.getchildren(): #print "addrung" newrung = ladder.rung() for rungside in rung.getchildren(): for subitem in rungside.getchildren(): block = None if subitem.tag != 'block': Warning('bad xml in Rung input section, excpeted a block' + str(subitem.tag)) #print "error here", subitem.tag continue block = block_from_xml(IOlist,subitem) if block is not None: if rungside.tag == 'input': newrung.inputs.append(block) elif rungside.tag == 'output': newrung.outputs.append(block) else: Warning('bad xml in the Rung section, expected input or output block: ' + str(item.tag)) pass continue Rungs.append(newrung) IOlist = IOlist.values() ##print "---" #print Rungs #print "+++" return [Rungs, IOlist] def io_to_xml(IO): itemxml = ElementTree.Element('item') namexml = ElementTree.SubElement(itemxml,'name') namexml.text = str(IO.name) typexml = ElementTree.SubElement(itemxml,'type') typexml.text = str(IO.typedesc) descxml = ElementTree.SubElement(itemxml,'description') descxml.text = str(IO.description) valuexml = ElementTree.SubElement(itemxml,'value') valuexml.text = str(IO.value) return itemxml def block_to_xml(Block): itemxml = ElementTree.Element('block') functionxml = ElementTree.SubElement(itemxml,'function') functionxml.text = Block.function.name argumentsxml = ElementTree.SubElement(itemxml,'arguments') for arg in Block.arguments: if isinstance(arg,ladder.IO):#arg.__class__ == ladder.IO.__class__: argxml = ElementTree.SubElement(argumentsxml,'item') argxml.text = arg.name elif isinstance(arg,ladder.block):#arg.__class__ == ladder.block.__class__: argxml = block_to_xml(arg) argumentsxml.append(argxml) else: raise Exception('bad type' + str(ladder.IO.__class__) + " " + str(arg.__class__)) return itemxml def create_xml(Rungs,IO,filename): ladderxml = ElementTree.Element('ladder') #take care of IO IOxml = ElementTree.SubElement(ladderxml,'IO') for item in IO: itemxml = io_to_xml(item) IOxml.append(itemxml) #Set up Rungs for rung in Rungs: Rungxml = ElementTree.SubElement(ladderxml,'Rung') inputsxml = ElementTree.SubElement(Rungxml,'input') outputsxml = ElementTree.SubElement(Rungxml,'output') for block in rung.inputs: b = block_to_xml(block) inputsxml.append(b) for block in rung.outputs: b = block_to_xml(block) outputsxml.append(b) tree = ElementTree.ElementTree(ladderxml) tree.write(filename) return True xmltoladder.py0000644000175000017500000001151311675237203012402 0ustar danodanofrom xml.etree import ElementTree import ladder import block_functions def block_from_xml(IOlist,block): newblock = ladder.block() funcxml = block.find('function') #print funcxml.text if funcxml is None: raise Warning('bad xml in a block, no function name' + str(block)) functxt = funcxml.text if block_functions.BLOCK_FUNCTION_DICT.has_key(functxt): newblock.function = block_functions.BLOCK_FUNCTION_DICT[functxt]() argsxml = block.find('arguments') for arg in argsxml.getchildren(): newargument = None if arg.tag == 'item': if IOlist.has_key(arg.text): newargument = IOlist[arg.text] else: raise Warning('bad xml in a block\'s arguments. Cannot resolve IO name: ' + arg.text) elif arg.tag == 'block': newargument = block_from_xml(IOlist,arg) else: raise Warning('bad xml in block\'s arguments. Not an item or block') if newargument is not None: newblock.arguments.append(newargument) return newblock def create_ladder(xmlfile): data = ElementTree.parse(xmlfile) ladderxml = data.getroot() #Set up IO IOxml = ladderxml.find('IO') IOlist = {} for item in IOxml.getchildren(): value = None valuetxt=None newIO = None if item.tag != 'item': Warning('bad xml in the IO section: expected an : ' + str(item.tag)) continue namexml = item.find('name') typexml = item.find('type') descxml = item.find('desc') valuexml = item.find('value') #if (not namexml) and (not typexml): #raise Warning('bad xml in the IO section: missing name or type: ' + str(item.tag)) #continue nametxt = namexml.text typetxt = typexml.text if not descxml: desctxt = '' else: desctxt = descxml.text if valuexml is not None: valuetxt = valuexml.text if typetxt=='int': value = int(valuetxt) elif typetxt=='str': value = str(valuetxt) elif typetxt=='bool': value = bool(valuetxt) else: value = valuetxt #print nametxt, newIO = ladder.IO(value,nametxt,typetxt,description=desctxt) #print newIO if newIO is not None: IOlist[nametxt] = newIO #print "-----" #rint IOlist #rint "-----" #Set up Rungs #Rungsxml = ladderxml.findall('Rung') Rungslist = ladderxml.findall('Rung') Rungs = [] for rung in Rungslist: #for item in Rungsxml.getchildren(): #print "addrung" newrung = ladder.rung() for rungside in rung.getchildren(): for subitem in rungside.getchildren(): block = None if subitem.tag != 'block': Warning('bad xml in Rung input section, excpeted a block' + str(subitem.tag)) #print "error here", subitem.tag continue block = block_from_xml(IOlist,subitem) if block is not None: if rungside.tag == 'input': newrung.inputs.append(block) elif rungside.tag == 'output': newrung.outputs.append(block) else: Warning('bad xml in the Rung section, expected input or output block: ' + str(item.tag)) pass continue Rungs.append(newrung) IOlist = IOlist.values() ##print "---" #print Rungs #print "+++" return [Rungs, IOlist] def io_to_xml(IO): itemxml = ElementTree.Element('item') namexml = ElementTree.SubElement(itemxml,'name') namexml.text = str(IO.name) typexml = ElementTree.SubElement(itemxml,'type') typexml.text = str(IO.typedesc) descxml = ElementTree.SubElement(itemxml,'description') descxml.text = str(IO.description) valuexml = ElementTree.SubElement(itemxml,'value') valuexml.text = str(IO.value) return itemxml def block_to_xml(Block): itemxml = ElementTree.Element('block') functionxml = ElementTree.SubElement(itemxml,'function') functionxml.text = Block.function.name argumentsxml = ElementTree.SubElement(itemxml,'arguments') for arg in Block.arguments: if isinstance(arg,ladder.IO):#arg.__class__ == ladder.IO.__class__: argxml = ElementTree.SubElement(argumentsxml,'item') argxml.text = arg.name elif isinstance(arg,ladder.block):#arg.__class__ == ladder.block.__class__: argxml = block_to_xml(arg) argumentsxml.append(argxml) else: raise Exception('bad type' + str(ladder.IO.__class__) + " " + str(arg.__class__)) return itemxml def create_xml(Rungs,IO,filename): ladderxml = ElementTree.Element('ladder') #take care of IO IOxml = ElementTree.SubElement(ladderxml,'IO') for item in IO: itemxml = io_to_xml(item) IOxml.append(itemxml) #Set up Rungs for rung in Rungs: Rungxml = ElementTree.SubElement(ladderxml,'Rung') inputsxml = ElementTree.SubElement(Rungxml,'input') outputsxml = ElementTree.SubElement(Rungxml,'output') for block in rung.inputs: b = block_to_xml(block) inputsxml.append(b) for block in rung.outputs: b = block_to_xml(block) outputsxml.append(b) tree = ElementTree.ElementTree(ladderxml) tree.write(filename) return True