import wx
import os
import modules
from plugger import PlugTemplate, opjimg
from PythonEditor import PythonEditorFrame
from xml.dom import minidom
from xmlclass import *
import cPickle
PythonClasses = GenerateClassesFromXSD(os.path.join(os.path.dirname(__file__), "python_xsd.xsd"))
#-------------------------------------------------------------------------------
# Undo Buffer for PythonCode
#-------------------------------------------------------------------------------
# Length of the buffer
UNDO_BUFFER_LENGTH = 20
"""
Class implementing a buffer of changes made on the current editing model
"""
class UndoBuffer:
# Constructor initialising buffer
def __init__(self, currentstate, issaved = False):
self.Buffer = []
self.CurrentIndex = -1
self.MinIndex = -1
self.MaxIndex = -1
# if current state is defined
if currentstate:
self.CurrentIndex = 0
self.MinIndex = 0
self.MaxIndex = 0
# Initialising buffer with currentstate at the first place
for i in xrange(UNDO_BUFFER_LENGTH):
if i == 0:
self.Buffer.append(currentstate)
else:
self.Buffer.append(None)
# Initialising index of state saved
if issaved:
self.LastSave = 0
else:
self.LastSave = -1
# Add a new state in buffer
def Buffering(self, currentstate):
self.CurrentIndex = (self.CurrentIndex + 1) % UNDO_BUFFER_LENGTH
self.Buffer[self.CurrentIndex] = currentstate
# Actualising buffer limits
self.MaxIndex = self.CurrentIndex
if self.MinIndex == self.CurrentIndex:
# If the removed state was the state saved, there is no state saved in the buffer
if self.LastSave == self.MinIndex:
self.LastSave = -1
self.MinIndex = (self.MinIndex + 1) % UNDO_BUFFER_LENGTH
self.MinIndex = max(self.MinIndex, 0)
# Return current state of buffer
def Current(self):
return self.Buffer[self.CurrentIndex]
# Change current state to previous in buffer and return new current state
def Previous(self):
if self.CurrentIndex != self.MinIndex:
self.CurrentIndex = (self.CurrentIndex - 1) % UNDO_BUFFER_LENGTH
return self.Buffer[self.CurrentIndex]
return None
# Change current state to next in buffer and return new current state
def Next(self):
if self.CurrentIndex != self.MaxIndex:
self.CurrentIndex = (self.CurrentIndex + 1) % UNDO_BUFFER_LENGTH
return self.Buffer[self.CurrentIndex]
return None
# Return True if current state is the first in buffer
def IsFirst(self):
return self.CurrentIndex == self.MinIndex
# Return True if current state is the last in buffer
def IsLast(self):
return self.CurrentIndex == self.MaxIndex
# Note that current state is saved
def CurrentSaved(self):
self.LastSave = self.CurrentIndex
# Return True if current state is saved
def IsCurrentSaved(self):
return self.LastSave == self.CurrentIndex
class PythonCodeTemplate:
def __init__(self):
self.PluginMethods.insert(0,
{"bitmap" : opjimg("editPYTHONcode"),
"name" : _("Edit Python File"),
"tooltip" : _("Edit Python File"),
"method" : "_OpenView"},
)
filepath = self.PythonFileName()
self.Buffering = False
self.PythonCode = PythonClasses["Python"]()
self.PythonBuffer = UndoBuffer(self.Copy(self.PythonCode), False)
if os.path.isfile(filepath):
xmlfile = open(filepath, 'r')
tree = minidom.parse(xmlfile)
xmlfile.close()
for child in tree.childNodes:
if child.nodeType == tree.ELEMENT_NODE and child.nodeName == "Python":
self.PythonCode.loadXMLTree(child, ["xmlns", "xmlns:xsi", "xsi:schemaLocation"])
self.PythonBuffer = UndoBuffer(self.Copy(self.PythonCode), True)
else:
self.OnPlugSave()
def PluginPath(self):
return os.path.join(self.PlugParent.PluginPath(), "modules", self.PlugType)
def PythonFileName(self):
return os.path.join(self.PlugPath(), "python.xml")
def GetFilename(self):
if self.PythonBuffer.IsCurrentSaved():
return "python"
else:
return "~python~"
def SetPythonCode(self, text):
self.PythonCode.settext(text)
def GetPythonCode(self):
return self.PythonCode.gettext()
_View = None
def _OpenView(self):
if not self._View:
def _onclose():
self._View = None
def _onsave():
self.GetPlugRoot().SaveProject()
self._View = PythonEditorFrame(self.GetPlugRoot().AppFrame, self)
self._View._onclose = _onclose
self._View._onsave = _onsave
self._View.Show()
def OnPlugSave(self):
filepath = self.PythonFileName()
text = "<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"no\"?>\n"
extras = {"xmlns":"http://www.w3.org/2001/XMLSchema",
"xmlns:xsi":"http://www.w3.org/2001/XMLSchema-instance",
"xsi:schemaLocation" : "python_xsd.xsd"}
text += self.PythonCode.generateXMLText("Python", 0, extras)
xmlfile = open(filepath,"w")
xmlfile.write(text)
xmlfile.close()
self.PythonBuffer.CurrentSaved()
return True
#-------------------------------------------------------------------------------
# Current Buffering Management Functions
#-------------------------------------------------------------------------------
"""
Return a copy of the project
"""
def Copy(self, model):
return cPickle.loads(cPickle.dumps(model))
def BufferPython(self):
self.PythonBuffer.Buffering(self.Copy(self.PythonCode))
def StartBuffering(self):
self.PythonBuffer.Buffering(self.PythonCode)
self.Buffering = True
def EndBuffering(self):
if self.Buffering:
self.PythonCode = self.Copy(self.PythonCode)
self.Buffering = False
def PythonCodeIsSaved(self):
if self.PythonBuffer:
return self.PythonBuffer.IsCurrentSaved()
else:
return True
def LoadPrevious(self):
self.PythonCode = self.Copy(self.PythonBuffer.Previous())
def LoadNext(self):
self.PythonCode = self.Copy(self.PythonBuffer.Next())
def GetBufferState(self):
first = self.PythonBuffer.IsFirst()
last = self.PythonBuffer.IsLast()
return not first, not last
def _GetClassFunction(name):
def GetRootClass():
__import__("plugins.python.modules." + name)
return getattr(modules, name).RootClass
return GetRootClass
class RootClass(PythonCodeTemplate):
# For root object, available Childs Types are modules of the modules packages.
PlugChildsTypes = [(name, _GetClassFunction(name), help) for name, help in zip(modules.__all__,modules.helps)]
def PluginPath(self):
return os.path.join(self.PlugParent.PluginPath(), self.PlugType)
def PlugGenerate_C(self, buildpath, locations):
"""
Generate C code
@param current_location: Tupple containing plugin IEC location : %I0.0.4.5 => (0,0,4,5)
@param locations: List of complete variables locations \
[{"IEC_TYPE" : the IEC type (i.e. "INT", "STRING", ...)
"NAME" : name of the variable (generally "__IW0_1_2" style)
"DIR" : direction "Q","I" or "M"
"SIZE" : size "X", "B", "W", "D", "L"
"LOC" : tuple of interger for IEC location (0,1,2,...)
}, ...]
@return: [(C_file_name, CFLAGS),...] , LDFLAGS_TO_APPEND
"""
current_location = self.GetCurrentLocation()
# define a unique name for the generated C file
location_str = "_".join(map(lambda x:str(x), current_location))
plugin_root = self.GetPlugRoot()
plugin_root.GetIECProgramsAndVariables()
plc_python_filepath = os.path.join(os.path.split(__file__)[0], "plc_python.c")
plc_python_file = open(plc_python_filepath, 'r')
plc_python_code = plc_python_file.read()
plc_python_file.close()
python_eval_fb_list = []
for v in plugin_root._VariablesList:
if v["vartype"] == "FB" and v["type"] in ["PYTHON_EVAL","PYTHON_POLL"]:
python_eval_fb_list.append(v)
python_eval_fb_count = max(1, len(python_eval_fb_list))
# prepare python code
plc_python_code = plc_python_code % {
"python_eval_fb_count": python_eval_fb_count,
"location": location_str}
Gen_Pythonfile_path = os.path.join(buildpath, "python_%s.c"%location_str)
pythonfile = open(Gen_Pythonfile_path,'w')
pythonfile.write(plc_python_code)
pythonfile.close()
runtimefile_path = os.path.join(buildpath, "runtime_%s.py"%location_str)
runtimefile = open(runtimefile_path, 'w')
runtimefile.write(self.GetPythonCode())
runtimefile.close()
if wx.Platform == '__WXMSW__':
matiec_flags = " -I../../matiec/lib"
else:
matiec_flags = " -I../matiec/lib"
return [(Gen_Pythonfile_path, matiec_flags)], "", True, ("runtime_%s.py"%location_str, file(runtimefile_path,"rb"))