Function validate_input_content

scripts/python_ui/streamlit.py:724–768

Validate input content for potentially problematic characters or patterns. Args: input_text: The input text to validate Returns: Tuple[bool, str]: (is_valid, error_message)

(input_text: str)

def validate_input_content(input_text: str) -> Tuple[bool, str]:
    """Validate input content for potentially problematic characters or patterns.

    Args:
        input_text: The input text to validate

    Returns:
        Tuple[bool, str]: (is_valid, error_message)
    """
    if not input_text or input_text.isspace():
        return False, "Input content cannot be empty or only whitespace."

    # Check for minimum length
    if len(input_text.strip()) < 2:
        return False, "Input content must be at least 2 characters long."

    # Check for maximum length (e.g., 100KB)
    if len(input_text.encode("utf-8")) > 100 * 1024:
        return False, "Input content exceeds maximum size of 100KB."

    # Check for high concentration of special characters
    special_chars = set("!@#$%^&*()_+[]{}|\\;:'\",.<>?`~")
    special_char_count = sum(1 for c in input_text if c in special_chars)
    special_char_ratio = special_char_count / len(input_text)

    if special_char_ratio > 0.3:  # More than 30% special characters
        return (
            False,
            "Input contains too many special characters. Please check your input.",
        )

    # Check for control characters
    control_chars = set(
        chr(i) for i in range(32) if i not in [9, 10, 13]
    )  # Allow tab, newline, carriage return
    if any(c in control_chars for c in input_text):
        return False, "Input contains invalid control characters."

    # Check for proper UTF-8 encoding
    try:
        input_text.encode("utf-8").decode("utf-8")
    except UnicodeError:
        return False, "Input contains invalid Unicode characters."

    return True, ""


def sanitize_input_content(input_text: str) -> str: