This document is for Kombu's development version, which can be significantly different from previous releases. Get the stable docs here: 5.0.

Source code for kombu.utils.text

"""Text Utilities."""
# flake8: noqa

from difflib import SequenceMatcher

from kombu import version_info_t

[docs]def escape_regex(p, white=''): # type: (str, str) -> str """Escape string for use within a regular expression.""" # what's up with re.escape? that code must be neglected or something return ''.join(c if c.isalnum() or c in white else ('\\000' if c == '\000' else '\\' + c) for c in p)
[docs]def fmatch_iter(needle, haystack, min_ratio=0.6): # type: (str, Sequence[str], float) -> Iterator[Tuple[float, str]] """Fuzzy match: iteratively. Yields: Tuple: of ratio and key. """ for key in haystack: ratio = SequenceMatcher(None, needle, key).ratio() if ratio >= min_ratio: yield ratio, key
[docs]def fmatch_best(needle, haystack, min_ratio=0.6): # type: (str, Sequence[str], float) -> str """Fuzzy match - Find best match (scalar).""" try: return sorted( fmatch_iter(needle, haystack, min_ratio), reverse=True, )[0][1] except IndexError: pass
[docs]def version_string_as_tuple(s): # type: (str) -> version_info_t """Convert version string to version info tuple.""" v = _unpack_version(*s.split('.')) # X.Y.3a1 -> (X, Y, 3, 'a1') if isinstance(v.micro, str): 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=''): # type: (int, int, int, str, str) -> version_info_t return version_info_t(int(major), int(minor), micro, releaselevel, serial) def _splitmicro(micro, releaselevel='', serial=''): # type: (int, str, str) -> Tuple[int, str, str] 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