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# -*- coding: utf-8 -*-
from __future__ import absolute_import, unicode_literals
from difflib import SequenceMatcher
from kombu import version_info_t
from kombu.five import string_t
def escape_regex(p, white=''):
# what's up with re.escape? that code must be neglected or someting
return ''.join(c if c.isalnum() or c in white
else ('\\000' if c == '\000' else '\\' + c)
for c in p)
def fmatch_iter(needle, haystack, min_ratio=0.6):
for key in haystack:
ratio = SequenceMatcher(None, needle, key).ratio()
if ratio >= min_ratio:
yield ratio, key
def fmatch_best(needle, haystack, min_ratio=0.6):
try:
return sorted(
fmatch_iter(needle, haystack, min_ratio), reverse=True,
)[0][1]
except IndexError:
pass
def version_string_as_tuple(s):
v = _unpack_version(*s.split('.'))
# X.Y.3a1 -> (X, Y, 3, 'a1')
if isinstance(v.micro, string_t):
v = version_info_t(v.major, v.minor, *_splitmicro(*v[2:]))
# X.Y.3a1-40 -> (X, Y, 3, 'a1', '40')
if not v.serial and v.releaselevel and '-' in v.releaselevel:
v = version_info_t(*list(v[0:3]) + v.releaselevel.split('-'))
return v
def _unpack_version(major, minor=0, micro=0, releaselevel='', serial=''):
return version_info_t(int(major), int(minor), micro, releaselevel, serial)
def _splitmicro(micro, releaselevel='', serial=''):
for index, char in enumerate(micro):
if not char.isdigit():
break
else:
return int(micro or 0), releaselevel, serial
return int(micro[:index]), micro[index:], serial
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