from __future__ import annotations

import re
from pathlib import Path

ROOT_DIR = Path(__file__).resolve().parent.parent


def dir_name(linter_name: str) -> str:
    return linter_name.replace("-", "_")


def pascal_case(linter_name: str) -> str:
    """Convert from snake-case to PascalCase."""
    return "".join(word.title() for word in linter_name.split("-"))


def snake_case(name: str) -> str:
    """Convert from PascalCase to snake_case."""
    return "".join(
        f"_{word.lower()}" if word.isupper() else word for word in name
    ).lstrip("_")


def get_indent(line: str) -> str:
    return re.match(r"^\s*", line).group()  # type: ignore[union-attr]