blob: 489d3df28600b72b8690c788d8569450d60da69a (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
|
#![unstable(issue = "0", feature = "windows_stdio")]
use crate::io;
use crate::sys::c;
use crate::sys::handle::Handle;
use crate::mem::ManuallyDrop;
pub struct Stdin {
}
pub struct Stdout;
pub struct Stderr;
const MAX_BUFFER_SIZE: usize = 8192;
pub const STDIN_BUF_SIZE: usize = MAX_BUFFER_SIZE / 2 * 3;
pub fn get_handle(handle_id: c::DWORD) -> io::Result<c::HANDLE> {
let handle = unsafe { c::GetStdHandle(handle_id) };
if handle == c::INVALID_HANDLE_VALUE {
Err(io::Error::last_os_error())
} else if handle.is_null() {
Err(io::Error::from_raw_os_error(c::ERROR_INVALID_HANDLE as i32))
} else {
Ok(handle)
}
}
fn write(handle_id: c::DWORD, data: &[u8]) -> io::Result<usize> {
let handle = get_handle(handle_id)?;
let handle = Handle::new(handle);
ManuallyDrop::new(handle).write(data)
}
impl Stdin {
pub fn new() -> io::Result<Stdin> {
Ok(Stdin { })
}
}
impl io::Read for Stdin {
fn read(&mut self, buf: &mut [u8]) -> io::Result<usize> {
let handle = get_handle(c::STD_INPUT_HANDLE)?;
let handle = Handle::new(handle);
ManuallyDrop::new(handle).read(buf)
}
}
impl Stdout {
pub fn new() -> io::Result<Stdout> {
Ok(Stdout)
}
}
impl io::Write for Stdout {
fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
write(c::STD_OUTPUT_HANDLE, buf)
}
fn flush(&mut self) -> io::Result<()> {
Ok(())
}
}
impl Stderr {
pub fn new() -> io::Result<Stderr> {
Ok(Stderr)
}
}
impl io::Write for Stderr {
fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
write(c::STD_ERROR_HANDLE, buf)
}
fn flush(&mut self) -> io::Result<()> {
Ok(())
}
}
pub fn is_ebadf(err: &io::Error) -> bool {
err.raw_os_error() == Some(c::ERROR_INVALID_HANDLE as i32)
}
pub fn panic_output() -> Option<impl io::Write> {
Stderr::new().ok()
}
|
