1use crate::ffi::OsString;
2use crate::{fmt, vec};
3
4pub struct Env {
5 iter: vec::IntoIter<(OsString, OsString)>,
6}
7
8// FIXME(https://github.com/rust-lang/rust/issues/114583): Remove this when <OsStr as Debug>::fmt matches <str as Debug>::fmt.
9pub struct EnvStrDebug<'a> {
10 slice: &'a [(OsString, OsString)],
11}
12
13impl fmt::Debug for EnvStrDebug<'_> {
14 fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
15 f&mut DebugList<'_, '_>.debug_list()
16 .entries(self.slice.iter().map(|(a: &OsString, b: &OsString)| (a.to_str().unwrap(), b.to_str().unwrap())))
17 .finish()
18 }
19}
20
21impl Env {
22 pub(super) fn new(env: Vec<(OsString, OsString)>) -> Self {
23 Env { iter: env.into_iter() }
24 }
25
26 pub fn str_debug(&self) -> impl fmt::Debug + '_ {
27 EnvStrDebug { slice: self.iter.as_slice() }
28 }
29}
30
31impl fmt::Debug for Env {
32 fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
33 f.debug_list().entries(self.iter.as_slice()).finish()
34 }
35}
36
37impl !Send for Env {}
38impl !Sync for Env {}
39
40impl Iterator for Env {
41 type Item = (OsString, OsString);
42 fn next(&mut self) -> Option<(OsString, OsString)> {
43 self.iter.next()
44 }
45 fn size_hint(&self) -> (usize, Option<usize>) {
46 self.iter.size_hint()
47 }
48}
49