from __future__ import annotations

import re

from typing import TYPE_CHECKING

from .base import BaseFormat

if TYPE_CHECKING:

from commitizen.tags import VersionTag

class Markdown(BaseFormat):

extension = "md"

alternative_extensions = {"markdown", "mkd"}

RE_TITLE = re.compile(r"^(?P<level>#+) (?P<title>.*)$")

def parse_version_from_title(self, line: str) -> VersionTag | None:

m = self.RE_TITLE.match(line)

if not m:

return None

return self.tag_rules.search_version(m.group("title"))

def parse_title_level(self, line: str) -> int | None:

m = self.RE_TITLE.match(line)

if not m:

return None

return len(m.group("level"))