| 9 | |
| 10 | #[no_mangle] |
| 11 | pub fn main(argc: usize, argv: &[&str]) -> i32 { |
| 12 | println!("argc = {}", argc); |
| 13 | for (i, arg) in argv.iter().enumerate() { |
| 14 | println!("argv[{}] = {}", i, arg); |
| 15 | } |
| 16 | assert!(argc == 2); |
| 17 | let fd = open(argv[1], OpenFlags::RDONLY); |
| 18 | if fd == -1 { |
| 19 | panic!("Error occurred when opening file"); |
| 20 | } |
| 21 | let fd = fd as usize; |
| 22 | let mut buf = [0u8; 256]; |
| 23 | loop { |
| 24 | let size = read(fd, &mut buf) as usize; |
| 25 | if size == 0 { |
| 26 | break; |
| 27 | } |
| 28 | print!("{}", core::str::from_utf8(&buf[..size]).unwrap()); |
| 29 | } |
| 30 | close(fd); |
| 31 | 0 |
| 32 | } |