beremiz

make attribute CFLAGS and LDFLAGS optional and add default empty value

Actually CFLAGS and LDFLAGS are not required and can be empty.
Without default empty value if target platform in project settings was
set to "Linux" CFLAGS and LDFLAGS was initialized with NoneType.
The result was broken build and it wasn't to save/load project with
such settings.

Traceback (most recent call last):
File "/home/developer/WorkData/PLC/beremiz/beremiz/ProjectController.py", line 956, in _Build
if not builder.build() :
File "/home/developer/WorkData/PLC/beremiz/beremiz/targets/toolchain_gcc.py", line 96, in build
Builder_CFLAGS = ' '.join(self.getBuilderCFLAGS())
TypeError: sequence item 0: expected string, NoneType found
import keyword
import wx.stc as stc
from controls.CustomStyledTextCtrl import faces
from editors.CodeFileEditor import CodeFileEditor, CodeEditor
class PythonCodeEditor(CodeEditor):
KEYWORDS = keyword.kwlist
COMMENT_HEADER = "#"
def SetCodeLexer(self):
self.SetLexer(stc.STC_LEX_PYTHON)
# Line numbers in margin
self.StyleSetSpec(stc.STC_STYLE_LINENUMBER,'fore:#000000,back:#99A9C2,size:%(size)d' % faces)
# Highlighted brace
self.StyleSetSpec(stc.STC_STYLE_BRACELIGHT,'fore:#00009D,back:#FFFF00,size:%(size)d' % faces)
# Unmatched brace
self.StyleSetSpec(stc.STC_STYLE_BRACEBAD,'fore:#00009D,back:#FF0000,size:%(size)d' % faces)
# Indentation guide
self.StyleSetSpec(stc.STC_STYLE_INDENTGUIDE, 'fore:#CDCDCD,size:%(size)d' % faces)
# Python styles
self.StyleSetSpec(stc.STC_P_DEFAULT, 'fore:#000000,size:%(size)d' % faces)
# Comments
self.StyleSetSpec(stc.STC_P_COMMENTLINE, 'fore:#008000,back:#F0FFF0,size:%(size)d' % faces)
self.StyleSetSpec(stc.STC_P_COMMENTBLOCK, 'fore:#008000,back:#F0FFF0,size:%(size)d' % faces)
# Numbers
self.StyleSetSpec(stc.STC_P_NUMBER, 'fore:#008080,size:%(size)d' % faces)
# Strings and characters
self.StyleSetSpec(stc.STC_P_STRING, 'fore:#800080,size:%(size)d' % faces)
self.StyleSetSpec(stc.STC_P_CHARACTER, 'fore:#800080,size:%(size)d' % faces)
# Keywords
self.StyleSetSpec(stc.STC_P_WORD, 'fore:#000080,bold,size:%(size)d' % faces)
# Triple quotes
self.StyleSetSpec(stc.STC_P_TRIPLE, 'fore:#800080,back:#FFFFEA,size:%(size)d' % faces)
self.StyleSetSpec(stc.STC_P_TRIPLEDOUBLE, 'fore:#800080,back:#FFFFEA,size:%(size)d' % faces)
# Class names
self.StyleSetSpec(stc.STC_P_CLASSNAME, 'fore:#0000FF,bold,size:%(size)d' % faces)
# Function names
self.StyleSetSpec(stc.STC_P_DEFNAME, 'fore:#008080,bold,size:%(size)d' % faces)
# Operators
self.StyleSetSpec(stc.STC_P_OPERATOR, 'fore:#800000,bold,size:%(size)d' % faces)
# Identifiers. I leave this as not bold because everything seems
# to be an identifier if it doesn't match the above criterae
self.StyleSetSpec(stc.STC_P_IDENTIFIER, 'fore:#000000,size:%(size)d' % faces)
#-------------------------------------------------------------------------------
# CFileEditor Main Frame Class
#-------------------------------------------------------------------------------
class PythonEditor(CodeFileEditor):
CONFNODEEDITOR_TABS = [
(_("Python code"), "_create_CodePanel")]
CODE_EDITOR = PythonCodeEditor