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# nvPY: cross-platform note-taking app with simplenote syncing
# copyright 2012 by Charl P. Botha <cpbotha@vxlabs.com>
# new BSD license
# Tkinter and ttk documentation recommend pulling all symbols into client
# module namespace. I don't like that, so first pulling into this module
# tk, then can use tk.whatever in main module.
from tkinter import *
from tkinter.ttk import *
class Ucs4NotSupportedError(BaseException):
def __init__(self, char):
self.char = char
def __str__(self):
return ('non-BMP character {} is not supported. '
'Please rebuild python interpreter and libraries with UCS-4 support. '
'See https://github.com/cpbotha/nvpy/blob/master/docs/ucs-4.rst').format(self.char)
def with_ucs4_error_handling(fn):
""" Catch the non-BMP character error and reraise the Ucs4NotSupportedError. """
import functools
@functools.wraps(fn)
def wrapper(*args, **kwargs):
try:
return fn(*args, **kwargs)
except TclError as e:
import re
result = re.match(r'character (U\+[0-9a-f]+) is above the range \(U\+0000-U\+FFFF\) allowed by Tcl', str(e))
if result:
char = result.group(1)
raise Ucs4NotSupportedError(char)
raise
return wrapper
########################################################################
# Apply the monkey patches for convert TclError to Ucs4NotSupportedError
_Text = Text
class Text(_Text):
@with_ucs4_error_handling
def insert(self, *args, **kwargs):
return _Text.insert(self, *args, **kwargs)
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