def validate_github_subject()

in asfyaml/feature/github/custom_subjects.py [0:0]

• 8 lines of code
• 4 McCabe index (conditional complexity)

def validate_github_subject(subject):
    """Validates a github subject template:
    - MUST only contain valid references
    - MUST be a non-empty string
    - MUST not contain any reserved chars (newlines etc)
    """
    bad_chars = ("\r", "\n")
    assert isinstance(subject, str), "Subject template must be a string"
    assert subject, "Subject template must not be empty"
    assert not any(bad_char in subject for bad_char in bad_chars), "Subject template must not contain newlines!"
    found_refs = [x.group(1) for x in re.finditer(r"{(.+?)}", subject)]
    for ref in found_refs:
        assert ref in constants.VALID_GITHUB_SUBJECT_VARIABLES, f"Unknown variable '{ref}' found in subject template."