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
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
#![allow(missing_docs, nonstandard_style)]
use crate::ptr;
use crate::ffi::{OsStr, OsString};
use crate::io::ErrorKind;
use crate::os::windows::ffi::{OsStrExt, OsStringExt};
use crate::path::PathBuf;
use crate::time::Duration;
pub use libc::strlen;
pub use self::rand::hashmap_random_keys;
#[macro_use] pub mod compat;
pub mod alloc;
pub mod args;
pub mod c;
pub mod cmath;
pub mod condvar;
pub mod env;
pub mod ext;
pub mod fast_thread_local;
pub mod fs;
pub mod handle;
pub mod io;
pub mod memchr;
pub mod mutex;
pub mod net;
pub mod os;
pub mod os_str;
pub mod path;
pub mod pipe;
pub mod process;
pub mod rand;
pub mod rwlock;
pub mod thread;
pub mod thread_local;
pub mod time;
cfg_if::cfg_if! {
if #[cfg(not(target_vendor = "uwp"))] {
pub mod stdio;
pub mod stack_overflow;
} else {
pub mod stdio_uwp;
pub mod stack_overflow_uwp;
pub use self::stdio_uwp as stdio;
pub use self::stack_overflow_uwp as stack_overflow;
}
}
#[cfg(not(test))]
pub fn init() {
}
pub fn decode_error_kind(errno: i32) -> ErrorKind {
match errno as c::DWORD {
c::ERROR_ACCESS_DENIED => return ErrorKind::PermissionDenied,
c::ERROR_ALREADY_EXISTS => return ErrorKind::AlreadyExists,
c::ERROR_FILE_EXISTS => return ErrorKind::AlreadyExists,
c::ERROR_BROKEN_PIPE => return ErrorKind::BrokenPipe,
c::ERROR_FILE_NOT_FOUND => return ErrorKind::NotFound,
c::ERROR_PATH_NOT_FOUND => return ErrorKind::NotFound,
c::ERROR_NO_DATA => return ErrorKind::BrokenPipe,
c::ERROR_OPERATION_ABORTED => return ErrorKind::TimedOut,
_ => {}
}
match errno {
c::WSAEACCES => ErrorKind::PermissionDenied,
c::WSAEADDRINUSE => ErrorKind::AddrInUse,
c::WSAEADDRNOTAVAIL => ErrorKind::AddrNotAvailable,
c::WSAECONNABORTED => ErrorKind::ConnectionAborted,
c::WSAECONNREFUSED => ErrorKind::ConnectionRefused,
c::WSAECONNRESET => ErrorKind::ConnectionReset,
c::WSAEINVAL => ErrorKind::InvalidInput,
c::WSAENOTCONN => ErrorKind::NotConnected,
c::WSAEWOULDBLOCK => ErrorKind::WouldBlock,
c::WSAETIMEDOUT => ErrorKind::TimedOut,
_ => ErrorKind::Other,
}
}
pub fn to_u16s<S: AsRef<OsStr>>(s: S) -> crate::io::Result<Vec<u16>> {
fn inner(s: &OsStr) -> crate::io::Result<Vec<u16>> {
let mut maybe_result: Vec<u16> = s.encode_wide().collect();
if maybe_result.iter().any(|&u| u == 0) {
return Err(crate::io::Error::new(ErrorKind::InvalidInput,
"strings passed to WinAPI cannot contain NULs"));
}
maybe_result.push(0);
Ok(maybe_result)
}
inner(s.as_ref())
}
fn fill_utf16_buf<F1, F2, T>(mut f1: F1, f2: F2) -> crate::io::Result<T>
where F1: FnMut(*mut u16, c::DWORD) -> c::DWORD,
F2: FnOnce(&[u16]) -> T
{
let mut stack_buf = [0u16; 512];
let mut heap_buf = Vec::new();
unsafe {
let mut n = stack_buf.len();
loop {
let buf = if n <= stack_buf.len() {
&mut stack_buf[..]
} else {
let extra = n - heap_buf.len();
heap_buf.reserve(extra);
heap_buf.set_len(n);
&mut heap_buf[..]
};
c::SetLastError(0);
let k = match f1(buf.as_mut_ptr(), n as c::DWORD) {
0 if c::GetLastError() == 0 => 0,
0 => return Err(crate::io::Error::last_os_error()),
n => n,
} as usize;
if k == n && c::GetLastError() == c::ERROR_INSUFFICIENT_BUFFER {
n *= 2;
} else if k >= n {
n = k;
} else {
return Ok(f2(&buf[..k]))
}
}
}
}
fn os2path(s: &[u16]) -> PathBuf {
PathBuf::from(OsString::from_wide(s))
}
#[allow(dead_code)]
fn wide_char_to_multi_byte(code_page: u32,
flags: u32,
s: &[u16],
no_default_char: bool)
-> crate::io::Result<Vec<i8>> {
unsafe {
let mut size = c::WideCharToMultiByte(code_page,
flags,
s.as_ptr(),
s.len() as i32,
ptr::null_mut(),
0,
ptr::null(),
ptr::null_mut());
if size == 0 {
return Err(crate::io::Error::last_os_error());
}
let mut buf = Vec::with_capacity(size as usize);
buf.set_len(size as usize);
let mut used_default_char = c::FALSE;
size = c::WideCharToMultiByte(code_page,
flags,
s.as_ptr(),
s.len() as i32,
buf.as_mut_ptr(),
buf.len() as i32,
ptr::null(),
if no_default_char { &mut used_default_char }
else { ptr::null_mut() });
if size == 0 {
return Err(crate::io::Error::last_os_error());
}
if no_default_char && used_default_char == c::TRUE {
return Err(crate::io::Error::new(crate::io::ErrorKind::InvalidData,
"string cannot be converted to requested code page"));
}
buf.set_len(size as usize);
Ok(buf)
}
}
pub fn truncate_utf16_at_nul(v: &[u16]) -> &[u16] {
match v.iter().position(|c| *c == 0) {
Some(i) => &v[..i],
None => v
}
}
pub trait IsZero {
fn is_zero(&self) -> bool;
}
macro_rules! impl_is_zero {
($($t:ident)*) => ($(impl IsZero for $t {
fn is_zero(&self) -> bool {
*self == 0
}
})*)
}
impl_is_zero! { i8 i16 i32 i64 isize u8 u16 u32 u64 usize }
pub fn cvt<I: IsZero>(i: I) -> crate::io::Result<I> {
if i.is_zero() {
Err(crate::io::Error::last_os_error())
} else {
Ok(i)
}
}
pub fn dur2timeout(dur: Duration) -> c::DWORD {
dur.as_secs().checked_mul(1000).and_then(|ms| {
ms.checked_add((dur.subsec_nanos() as u64) / 1_000_000)
}).and_then(|ms| {
ms.checked_add(if dur.subsec_nanos() % 1_000_000 > 0 {1} else {0})
}).map(|ms| {
if ms > <c::DWORD>::max_value() as u64 {
c::INFINITE
} else {
ms as c::DWORD
}
}).unwrap_or(c::INFINITE)
}
#[allow(unreachable_code)]
pub unsafe fn abort_internal() -> ! {
#[cfg(any(target_arch = "x86", target_arch = "x86_64"))]
{
asm!("int $$0x29" :: "{ecx}"(7) ::: volatile);
crate::intrinsics::unreachable();
}
crate::intrinsics::abort();
}