Terminal Output

use indicatif::{ProgressBar, ProgressStyle};
use owo_colors::OwoColorize;
 
fn run(items: &[String]) -> anyhow::Result<()> {
    let bar = ProgressBar::new(items.len() as u64);
    bar.set_style(ProgressStyle::with_template(
        "{spinner:.green} [{bar:30}] {pos}/{len} {msg}",
    )?);
 
    for item in items {
        bar.set_message(item.clone());
        // work...
        bar.inc(1);
    }
    bar.finish_with_message("done".green().to_string());
    Ok(())
}

use indicatif::{MultiProgress, ProgressBar, ProgressStyle};
use std::time::Duration;
 
fn main() -> anyhow::Result<()> {
    let multi = MultiProgress::new();
 
    let overall = multi.add(ProgressBar::new(3));
    overall.set_style(ProgressStyle::with_template(
        "[{bar:40.cyan/blue}] {pos}/{len} batches",
    )?);
 
    for batch in 0..3 {
        let sub = multi.add(ProgressBar::new(50));
        sub.set_style(ProgressStyle::default_bar());
        for _ in 0..50 {
            sub.inc(1);
            std::thread::sleep(Duration::from_millis(10));
        }
        sub.finish_and_clear();
        overall.inc(1);
    }
    overall.finish_with_message("all batches complete");
    Ok(())
}

use std::io::IsTerminal;
 
let use_color = std::io::stderr().is_terminal();