1use crate::io::{self, BorrowedCursor, IoSlice, IoSliceMut};
2use crate::mem::ManuallyDrop;
3use crate::os::unix::io::FromRawFd;
4use crate::sys::fd::FileDesc;
5
6pub struct Stdin(());
7pub struct Stdout(());
8pub struct Stderr(());
9
10impl Stdin {
11 pub const fn new() -> Stdin {
12 Stdin(())
13 }
14}
15
16impl io::Read for Stdin {
17 fn read(&mut self, buf: &mut [u8]) -> io::Result<usize> {
18 unsafe { ManuallyDrop::new(FileDesc::from_raw_fd(libc::STDIN_FILENO)).read(buf) }
19 }
20
21 fn read_buf(&mut self, buf: BorrowedCursor<'_>) -> io::Result<()> {
22 unsafe { ManuallyDrop::new(FileDesc::from_raw_fd(libc::STDIN_FILENO)).read_buf(cursor:buf) }
23 }
24
25 fn read_vectored(&mut self, bufs: &mut [IoSliceMut<'_>]) -> io::Result<usize> {
26 unsafe { ManuallyDrop::new(FileDesc::from_raw_fd(libc::STDIN_FILENO)).read_vectored(bufs) }
27 }
28
29 #[inline]
30 fn is_read_vectored(&self) -> bool {
31 true
32 }
33}
34
35impl Stdout {
36 pub const fn new() -> Stdout {
37 Stdout(())
38 }
39}
40
41impl io::Write for Stdout {
42 fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
43 unsafe { ManuallyDrop::new(FileDesc::from_raw_fd(libc::STDOUT_FILENO)).write(buf) }
44 }
45
46 fn write_vectored(&mut self, bufs: &[IoSlice<'_>]) -> io::Result<usize> {
47 unsafe {
48 ManuallyDrop::new(FileDesc::from_raw_fd(libc::STDOUT_FILENO)).write_vectored(bufs)
49 }
50 }
51
52 #[inline]
53 fn is_write_vectored(&self) -> bool {
54 true
55 }
56
57 #[inline]
58 fn flush(&mut self) -> io::Result<()> {
59 Ok(())
60 }
61}
62
63impl Stderr {
64 pub const fn new() -> Stderr {
65 Stderr(())
66 }
67}
68
69impl io::Write for Stderr {
70 fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
71 unsafe { ManuallyDrop::new(FileDesc::from_raw_fd(libc::STDERR_FILENO)).write(buf) }
72 }
73
74 fn write_vectored(&mut self, bufs: &[IoSlice<'_>]) -> io::Result<usize> {
75 unsafe {
76 ManuallyDrop::new(FileDesc::from_raw_fd(libc::STDERR_FILENO)).write_vectored(bufs)
77 }
78 }
79
80 #[inline]
81 fn is_write_vectored(&self) -> bool {
82 true
83 }
84
85 #[inline]
86 fn flush(&mut self) -> io::Result<()> {
87 Ok(())
88 }
89}
90
91pub fn is_ebadf(err: &io::Error) -> bool {
92 err.raw_os_error() == Some(libc::EBADF as i32)
93}
94
95pub const STDIN_BUF_SIZE: usize = crate::sys_common::io::DEFAULT_BUF_SIZE;
96
97pub fn panic_output() -> Option<impl io::Write> {
98 Some(Stderr::new())
99}
100