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bazarr/libs/guessit/reutils.py

35 lines
804 B
Python

#!/usr/bin/env python
# -*- coding: utf-8 -*-
"""
Utils for re module
"""
from rebulk.remodule import re
def build_or_pattern(patterns, name=None, escape=False):
"""
Build a or pattern string from a list of possible patterns
:param patterns:
:type patterns:
:param name:
:type name:
:param escape:
:type escape:
:return:
:rtype:
"""
or_pattern = []
for pattern in patterns:
if not or_pattern:
or_pattern.append('(?')
if name:
or_pattern.append(f'P<{name}>')
else:
or_pattern.append(':')
else:
or_pattern.append('|')
or_pattern.append(f'(?:{re.escape(pattern)})' if escape else pattern)
or_pattern.append(')')
return ''.join(or_pattern)