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31 lines
847 B
31 lines
847 B
//! stopwatch is a simple CLI stopwatch
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use crossbeam_channel::tick;
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use std::io::{stdout, Write};
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use std::time::{Duration, Instant};
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#[macro_use]
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extern crate crossbeam_channel;
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fn main() {
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let out = stdout();
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let mut out = out.lock();
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// 30 fps should be enough
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let step_duration = Duration::from_millis(1000 / 30);
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let start = Instant::now();
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let ticker = tick(step_duration);
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loop {
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select! {
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recv(ticker) -> now => {
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let elapsed = now.unwrap().duration_since(start);
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let secs = elapsed.as_secs();
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let millis = elapsed.subsec_millis();
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write!(out, "\r[2K").unwrap();
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write!(out, "{:02}:{:02}:{:03}", secs/60, secs % 60, millis).unwrap();
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out.flush().unwrap();
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}
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}
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}
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}
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