Overlapping matches with finditer() in Python
- by Raphink
Hi there,
I'm using a regex to match Bible verse references in a text. The current regex is
REF_REGEX = re.compile(r'(?<!\w)((?i)q(?:uote)?\s+)?((?:(?:[1-3]|I{1,3})\s*)?[A-Za-z]+)\.?(?:\s*(\d+)(?:[:.](\d+)(?:-(\d+))?)?)(?:\s+(?:(?i)(?:from\s+)|(?:in\s+)|(?P<lbrace>\())\s*(\w+)(?(lbrace)\)))?', re.UNICODE)
This matches the following expressions fine:
"jn 3:16": (None, 'jn', '3', '16', None, None, None),
"matt. 18:21-22": (None, 'matt', '18', '21', '22', None, None),
"q matt. 18:21-22": ('q ', 'matt', '18', '21', '22', None, None),
"QuOTe jn 3:16": ('QuOTe ', 'jn', '3', '16', None, None, None),
"q 1co13:1": ('q ', '1co', '13', '1', None, None, None),
"q 1 co 13:1": ('q ', '1 co', '13', '1', None, None, None),
"quote 1 co 13:1": ('quote ', '1 co', '13', '1', None, None, None),
"quote 1co13:1": ('quote ', '1co', '13', '1', None, None, None),
"jean 3:18 (PDV)": (None, 'jean', '3', '18', None, '(', 'PDV'),
"quote malachie 1.1-2 fRom Colombe": ('quote ', 'malachie', '1', '1', '2', None, 'Colombe'),
"quote malachie 1.1-2 In Colombe": ('quote ', 'malachie', '1', '1', '2', None, 'Colombe'),
"cinq jn 3:16 (test)": (None, 'jn', '3', '16', None, '(', 'test'),
"Q IIKings5.13-58 from wolof": ('Q ', 'IIKings', '5', '13', '58', None, 'wolof'),
"This text is about lv5.4-6 in KJV only": (None, 'lv', '5', '4', '6', None, 'KJV'),
but it fails to parse:
"Found in 2 Cor. 5:18-21 ( Ministers": (None, '2 Cor', '5', '18', '21', None, None),
because it returns (None, 'in', '2', None, None, None, None) instead.
Is there a way to get finditer() to return all matches, even if they overlap, or is there a way to improve my regex so it matches this last bit properly?
Thanks.
