lsv 0.1.15

Three‑pane terminal file viewer (TUI) with preview and Lua configuration
Documentation 
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use std::time::SystemTime;

pub fn human_size(bytes: u64) -> String
{
    const UNITS: [&str; 7] = ["B", "KB", "MB", "GB", "TB", "PB", "EB"];
    let mut val = bytes as f64;
    let mut idx = 0usize;
    while val >= 1024.0 && idx + 1 < UNITS.len()
    {
        val /= 1024.0;
        idx += 1;
    }
    if idx == 0
    {
        format!("{} {}", bytes, UNITS[idx])
    }
    else
    {
        format!("{:.1} {}", val, UNITS[idx])
    }
}

pub fn format_time_abs(
    t: SystemTime,
    fmt: &str,
) -> String
{
    use chrono::{
        DateTime,
        Local,
    };
    let dt: DateTime<Local> = DateTime::from(t);
    dt.format(fmt).to_string()
}

pub fn format_time_ago(t: SystemTime) -> String
{
    let now = SystemTime::now();
    match now.duration_since(t)
    {
        Ok(d) =>
        {
            let secs = d.as_secs();
            if secs < 60
            {
                format!("{}s ago", secs)
            }
            else if secs < 3600
            {
                format!("{}m ago", secs / 60)
            }
            else if secs < 86400
            {
                format!("{}h ago", secs / 3600)
            }
            else if secs < 86400 * 30
            {
                format!("{}d ago", secs / 86400)
            }
            else if secs < 86400 * 365
            {
                format!("{}mo ago", secs / (86400 * 30))
            }
            else
            {
                format!("{}y ago", secs / (86400 * 365))
            }
        }
        Err(_) => "just now".to_string(),
    }
}