blob: d2081771b6ec79d267a9dba2377dc014cfb35a07 (
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
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
|
#![deny(unsafe_op_in_unsafe_fn)]
use super::fd::WasiFd;
use crate::io::{self, IoSlice, IoSliceMut};
use crate::mem::ManuallyDrop;
use crate::os::raw;
use crate::os::wasi::io::{AsFd, AsRawFd, BorrowedFd, FromRawFd};
pub struct Stdin;
pub struct Stdout;
pub struct Stderr;
impl Stdin {
pub const fn new() -> Stdin {
Stdin
}
}
impl AsRawFd for Stdin {
#[inline]
fn as_raw_fd(&self) -> raw::c_int {
0
}
}
impl AsFd for Stdin {
#[inline]
fn as_fd(&self) -> BorrowedFd<'_> {
unsafe { BorrowedFd::borrow_raw(0) }
}
}
impl io::Read for Stdin {
fn read(&mut self, data: &mut [u8]) -> io::Result<usize> {
self.read_vectored(&mut [IoSliceMut::new(data)])
}
fn read_vectored(&mut self, data: &mut [IoSliceMut<'_>]) -> io::Result<usize> {
ManuallyDrop::new(unsafe { WasiFd::from_raw_fd(self.as_raw_fd()) }).read(data)
}
#[inline]
fn is_read_vectored(&self) -> bool {
true
}
}
impl Stdout {
pub const fn new() -> Stdout {
Stdout
}
}
impl AsRawFd for Stdout {
#[inline]
fn as_raw_fd(&self) -> raw::c_int {
1
}
}
impl AsFd for Stdout {
#[inline]
fn as_fd(&self) -> BorrowedFd<'_> {
unsafe { BorrowedFd::borrow_raw(1) }
}
}
impl io::Write for Stdout {
fn write(&mut self, data: &[u8]) -> io::Result<usize> {
self.write_vectored(&[IoSlice::new(data)])
}
fn write_vectored(&mut self, data: &[IoSlice<'_>]) -> io::Result<usize> {
ManuallyDrop::new(unsafe { WasiFd::from_raw_fd(self.as_raw_fd()) }).write(data)
}
#[inline]
fn is_write_vectored(&self) -> bool {
true
}
fn flush(&mut self) -> io::Result<()> {
Ok(())
}
}
impl Stderr {
pub const fn new() -> Stderr {
Stderr
}
}
impl AsRawFd for Stderr {
#[inline]
fn as_raw_fd(&self) -> raw::c_int {
2
}
}
impl AsFd for Stderr {
#[inline]
fn as_fd(&self) -> BorrowedFd<'_> {
unsafe { BorrowedFd::borrow_raw(2) }
}
}
impl io::Write for Stderr {
fn write(&mut self, data: &[u8]) -> io::Result<usize> {
self.write_vectored(&[IoSlice::new(data)])
}
fn write_vectored(&mut self, data: &[IoSlice<'_>]) -> io::Result<usize> {
ManuallyDrop::new(unsafe { WasiFd::from_raw_fd(self.as_raw_fd()) }).write(data)
}
#[inline]
fn is_write_vectored(&self) -> bool {
true
}
fn flush(&mut self) -> io::Result<()> {
Ok(())
}
}
pub const STDIN_BUF_SIZE: usize = crate::sys_common::io::DEFAULT_BUF_SIZE;
pub fn is_ebadf(err: &io::Error) -> bool {
err.raw_os_error() == Some(wasi::ERRNO_BADF.raw().into())
}
pub fn panic_output() -> Option<impl io::Write> {
Some(Stderr::new())
}
|
