use std::{ffi::{CStr, CString}, os::raw::c_char};

/// Print line
#[no_mangle]
pub unsafe extern "C" fn println(str: *const c_char) {
   let c_str = CStr::from_ptr(str).to_str().unwrap();
   println!("{}", c_str);
}

/// Get mut-able string from rust
#[no_mangle]
pub unsafe extern "C" fn get_str_mut() -> *mut c_char {
   let c_string = CString::new("hello world!").expect("Error!");
   c_string.into_raw()
}

/// Get const string from rust
#[no_mangle]
pub unsafe extern "C" fn get_str() -> *const c_char {
   let c_string = CString::new("hello world!").expect("Error!");
   c_string.as_ptr()
}