xref: /third_party/rust/crates/clap/src/util/mod.rs (revision 19625d8c)
1#![allow(clippy::single_component_path_imports)]
2
3pub(crate) mod flat_map;
4pub(crate) mod flat_set;
5mod graph;
6mod id;
7mod str_to_bool;
8
9pub use self::id::Id;
10
11pub(crate) use self::flat_map::Entry;
12pub(crate) use self::flat_map::FlatMap;
13pub(crate) use self::flat_set::FlatSet;
14pub(crate) use self::graph::ChildGraph;
15pub(crate) use self::str_to_bool::str_to_bool;
16pub(crate) use self::str_to_bool::FALSE_LITERALS;
17pub(crate) use self::str_to_bool::TRUE_LITERALS;
18
19pub(crate) mod color;
20
21pub(crate) const SUCCESS_CODE: i32 = 0;
22// While sysexists.h defines EX_USAGE as 64, this doesn't seem to be used much in practice but
23// instead 2 seems to be frequently used.
24// Examples
25// - GNU `ls` returns 2
26// - Python's `argparse` returns 2
27pub(crate) const USAGE_CODE: i32 = 2;
28
29pub(crate) fn safe_exit(code: i32) -> ! {
30    use std::io::Write;
31
32    let _ = std::io::stdout().lock().flush();
33    let _ = std::io::stderr().lock().flush();
34
35    std::process::exit(code)
36}
37
38#[cfg(not(feature = "unicode"))]
39pub(crate) fn eq_ignore_case(left: &str, right: &str) -> bool {
40    left.eq_ignore_ascii_case(right)
41}
42
43#[cfg(feature = "unicode")]
44pub(crate) use unicase::eq as eq_ignore_case;
45