import re
import sys


def read_file_content(file_path: str) -> str:
    try:
        with open(file_path, "r", encoding="utf-8", errors="ignore") as file:
            return file.read()
    except FileNotFoundError:
        print("Error: File not found.")
        sys.exit(1)
    except IOError:
        print("Error: Could not read file.")
        sys.exit(1)


def remove_comments(code: str, extension: str) -> str:
    if extension == ".py":
        return code.split("#")[0].strip()
    elif extension in {".js", ".cpp"}:
        code = re.sub(r"//.*", "", code)
        code = re.sub(r"/\*.*?\*/", "", code, flags=re.DOTALL)
        return code.strip()
    return code.strip()