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- """Alias generators for converting between different capitalization conventions."""
- import re
- __all__ = ('to_pascal', 'to_camel', 'to_snake')
- def to_pascal(snake: str) -> str:
- """Convert a snake_case string to PascalCase.
- Args:
- snake: The string to convert.
- Returns:
- The PascalCase string.
- """
- camel = snake.title()
- return re.sub('([0-9A-Za-z])_(?=[0-9A-Z])', lambda m: m.group(1), camel)
- def to_camel(snake: str) -> str:
- """Convert a snake_case string to camelCase.
- Args:
- snake: The string to convert.
- Returns:
- The converted camelCase string.
- """
- camel = to_pascal(snake)
- return re.sub('(^_*[A-Z])', lambda m: m.group(1).lower(), camel)
- def to_snake(camel: str) -> str:
- """Convert a PascalCase or camelCase string to snake_case.
- Args:
- camel: The string to convert.
- Returns:
- The converted string in snake_case.
- """
- snake = re.sub(r'([a-zA-Z])([0-9])', lambda m: f'{m.group(1)}_{m.group(2)}', camel)
- snake = re.sub(r'([a-z0-9])([A-Z])', lambda m: f'{m.group(1)}_{m.group(2)}', snake)
- return snake.lower()
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