"""Input validation utilities."""
import re
from typing import Any, Dict
VALID_TABLE_NAME = re.compile(r"^[a-zA-Z_][a-zA-Z0-9_]*$")
VALID_COLUMN_NAME = re.compile(r"^[a-zA-Z_][a-zA-Z0-9_]*$")
def validate_table_name(name: str) -> bool:
"""Validate table name against SQL identifier rules."""
return bool(VALID_TABLE_NAME.match(name))
def validate_column_name(name: str) -> bool:
"""Validate column name against SQL identifier rules."""
return bool(VALID_COLUMN_NAME.match(name))
def validate_sql_type(sql_type: str) -> bool:
"""Validate SQLite data type.
Supports base types and compound types like 'INTEGER PRIMARY KEY'.
Extracts the base type and validates it.
"""
valid_types = {
"INTEGER",
"TEXT",
"REAL",
"BLOB",
"NUMERIC",
"BOOLEAN",
"DATE",
"DATETIME",
}
# Extract base type (first word) to handle compound types like "INTEGER PRIMARY KEY"
base_type = sql_type.strip().split()[0].upper()
return base_type in valid_types
