/usr/lib/python2.7/dist-packages/traits/util/camel_case.py is in python-traits 4.6.0-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 | """ Defines utility functions for operating on camel case names.
"""
# Standard library imports.
import re
###############################################################################
# Classes
###############################################################################
class CamelCaseToPython:
""" Simple functor class to convert names from camel case to idiomatic
Python variable names.
For example::
>>> camel2python = CamelCaseToPython
>>> camel2python('XMLActor2DToSGML')
'xml_actor2d_to_sgml'
"""
def __init__(self):
self.patn = re.compile(r'([A-Z0-9]+)([a-z0-9]*)')
self.nd_patn = re.compile(r'(\D[123])_D')
def __call__(self, name):
ret = self.patn.sub(self._repl, name)
ret = self.nd_patn.sub(r'\1d', ret)
if ret[0] == '_':
ret = ret[1:]
return ret.lower()
def _repl(self, m):
g1 = m.group(1)
g2 = m.group(2)
if len(g1) > 1:
if g2:
return '_' + g1[:-1] + '_' + g1[-1] + g2
else:
return '_' + g1
else:
return '_' + g1 + g2
###############################################################################
# Functions
###############################################################################
# Instantiate a converter.
camel_case_to_python = CamelCaseToPython()
def camel_case_to_words(s):
""" Convert a camel case string into words separated by spaces.
For example::
>>> camel_case_to_words('CamelCase')
'Camel Case'
"""
def add_space_between_words(s, c):
# We detect a word boundary if the character we are looking at is
# upper case, but the character preceding it is lower case.
if len(s) > 0 and s[-1].islower() and c.isupper():
return s + ' ' + c
return s + c
return reduce(add_space_between_words, s, '')
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