humanize_duration/
macros.rs

1#[macro_export]
2macro_rules! unit {
3	($unit_name:tt, $one:expr) => {
4		pub struct $unit_name;
5		impl $crate::Unit for $unit_name {
6			fn one(&self) -> &'static str {
7				$one
8			}
9
10			fn many(&self) -> &'static str {
11				$one
12			}
13
14			fn format(
15				&self,
16				f: &mut std::fmt::Formatter<'_>,
17				value: u64,
18				allow_zero: bool,
19				started: &mut bool,
20			) -> std::fmt::Result {
21				if value != 0 || (allow_zero && !*started) {
22					if *started {
23						f.write_str(" ")?;
24					}
25					write!(f, "{}{}", value, $one)?;
26					*started = true;
27				}
28				Ok(())
29			}
30		}
31	};
32	($unit_name:tt, $one:expr, $many:expr) => {
33		pub struct $unit_name;
34		impl $crate::Unit for $unit_name {
35			fn one(&self) -> &'static str {
36				$one
37			}
38
39			fn many(&self) -> &'static str {
40				$many
41			}
42
43			fn format(
44				&self,
45				f: &mut std::fmt::Formatter<'_>,
46				value: u64,
47				allow_zero: bool,
48				started: &mut bool,
49			) -> std::fmt::Result {
50				if value != 0 || (allow_zero && !*started) {
51					if *started {
52						f.write_str(" ")?;
53					}
54					if value > 1 || value == 0 {
55						write!(f, "{}{}", value, $many)?;
56					} else {
57						write!(f, "{}{}", value, $one)?;
58					}
59					*started = true;
60				}
61				Ok(())
62			}
63		}
64	};
65}
humanize_duration/macros.rs

humanize_duration/
macros.rs
