portersky
b7f9fefd78
Add a busy-wait sleep on a monotonic clock and re-export String, format!, and Duration from the library. The example animates a progress bar with a spinner and logs each step in a Vec<String>. Co-Authored-By: qwen (lmstudio/qwen3.8-27b@q3_k_xl): wrote example
56 lines
1.4 KiB
Rust
56 lines
1.4 KiB
Rust
#![no_std]
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#![no_main]
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use core::time::Duration;
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use rslibc::{format, print, println, vec, String, Vec};
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const FRAMES: [&str; 4] = ["|", "/", "-", "\\"];
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const WIDTH: usize = 20;
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const STEPS: usize = 10;
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fn bar(done: usize) -> String {
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let mut out = String::new();
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for i in 0..WIDTH {
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out.push(if i < done { '#' } else { '-' });
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}
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out
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}
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fn load(step: usize) -> rslibc::Result<u32, &'static str> {
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// Pretend to do work and return a checksum-like value.
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let mut total = 0u32;
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for value in vec![1, 2, 3, 4, 5] {
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total = total.wrapping_add(value * step as u32);
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}
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Ok(total)
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}
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#[rslibc_macros::main]
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async fn main() {
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println!("rslibc loading example");
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let mut log: Vec<String> = Vec::new();
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for step in 0..STEPS {
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match load(step) {
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Ok(value) => {
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let frame = FRAMES[step % FRAMES.len()];
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let percent = 100 * (step + 1) / STEPS;
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print!(
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"\r [{}] {:>3}% {}",
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bar((step + 1) * WIDTH / STEPS),
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percent,
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frame
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);
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log.push(format!("step {step} -> {value}"));
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}
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Err(message) => println!("error: {message}"),
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}
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rslibc::runtime::sleep(Duration::from_millis(60));
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}
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println!("\r [{}] 100% done", bar(WIDTH));
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println!("log = {log:?}");
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}
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