#[macro_export]
macro_rules! c_string {
($s:expr)=> (
{
use std::ffi::{CString};
CString::new($s).unwrap().as_ptr()
}
)
}
#[macro_export]
macro_rules! check_pointer {
(let $p:ident $(: $t:ty)? = $($f:ident)::* ( $($a:expr),* ) ) => {
let $p $(: $t)? = $($f)::* ( $($a),* ) ;
if $p.is_null() {
libc::perror(c_string!(stringify!($($f)::*)));
libc::exit(1);
}
};
}
use libc::{fputc, putchar};
#[test]
fn test_file_copy() {
unsafe {
let mut ch;
check_pointer! {
let fp = libc::fopen(c_string!("/home/sun/src/hexfile.cc") ,c_string!("r"));
}
check_pointer! {
let out = libc::fopen(c_string!("/home/sun/src/out_hexfile.txt") , c_string!("w") );
}
loop{
ch = libc::fgetc(fp);
if ch == libc::EOF { break; }
fputc(ch,out);
}
libc::fclose(fp);
libc::fclose(out);
}
}