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"""Helper functions for working with templates"""
from __future__ import annotations
import re
import string
from pathlib import Path
from typing import TYPE_CHECKING, Any
if TYPE_CHECKING:
from os import PathLike
def render_templatefile(path: str | PathLike, **kwargs: Any) -> None:
path_obj = Path(path)
raw = path_obj.read_text("utf8")
content = string.Template(raw).substitute(**kwargs)
render_path = path_obj.with_suffix("") if path_obj.suffix == ".tmpl" else path_obj
if path_obj.suffix == ".tmpl":
path_obj.rename(render_path)
render_path.write_text(content, "utf8")
CAMELCASE_INVALID_CHARS = re.compile(r"[^a-zA-Z\d]")
def string_camelcase(string: str) -> str:
"""Convert a word to its CamelCase version and remove invalid chars
>>> string_camelcase('lost-pound')
'LostPound'
>>> string_camelcase('missing_images')
'MissingImages'
"""
return CAMELCASE_INVALID_CHARS.sub("", string.title())
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