blob: 538b6dbcab2ec84da7087e08e9d8616e7f984eeb (
plain) (
blame)
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
|
use core::sync::atomic::{AtomicU8, Ordering};
/// Set an override value for whether or not colors are supported.
///
/// If `true` is passed, [`if_supports_color`](crate::OwoColorize::if_supports_color) will always
/// act as if colors are supported.
///
/// If `false` is passed, [`if_supports_color`](crate::OwoColorize::if_supports_color) will always
/// act as if colors are **not** supported.
///
/// This behavior can be disabled using [`unset_override`], allowing `owo-colors` to return to
/// inferring if colors are supported.
#[cfg(feature = "supports-colors")]
pub fn set_override(enabled: bool) {
OVERRIDE.set_force(enabled)
}
/// Remove any override value for whether or not colors are supported. This means
/// [`if_supports_color`](crate::OwoColorize::if_supports_color) will resume checking if the given
/// terminal output ([`Stream`](crate::Stream)) supports colors.
///
/// This override can be set using [`set_override`].
#[cfg(feature = "supports-colors")]
pub fn unset_override() {
OVERRIDE.unset()
}
pub(crate) static OVERRIDE: Override = Override::none();
pub(crate) struct Override(AtomicU8);
const FORCE_MASK: u8 = 0b10;
const FORCE_ENABLE: u8 = 0b11;
const FORCE_DISABLE: u8 = 0b10;
const NO_FORCE: u8 = 0b00;
impl Override {
const fn none() -> Self {
Self(AtomicU8::new(NO_FORCE))
}
fn inner(&self) -> u8 {
self.0.load(Ordering::SeqCst)
}
pub(crate) fn is_force_enabled_or_disabled(&self) -> (bool, bool) {
let inner = self.inner();
(inner == FORCE_ENABLE, inner == FORCE_DISABLE)
}
fn set_force(&self, enable: bool) {
self.0.store(FORCE_MASK | (enable as u8), Ordering::SeqCst)
}
fn unset(&self) {
self.0.store(0, Ordering::SeqCst);
}
}
|
