stowe 0.4.2

where git chokes, stowe stows - versioned, deduped big and binary files, pushed to backups you can still play (mirror) or compact blob stores (S3)
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//! Wall-clock helpers: the commit timestamp and how history prints it.

use std::time::{SystemTime, UNIX_EPOCH};

pub(crate) fn now() -> i64 {
    SystemTime::now()
        .duration_since(UNIX_EPOCH)
        .map(|d| d.as_secs() as i64)
        .unwrap_or(0)
}

/// Format Unix seconds as `YYYY-MM-DD HH:MM:SS UTC` without pulling in a date
/// crate (Howard Hinnant's civil-from-days algorithm).
pub(crate) fn format_time(secs: i64) -> String {
    let days = secs.div_euclid(86400);
    let tod = secs.rem_euclid(86400);
    let (y, m, d) = civil_from_days(days);
    format!(
        "{y:04}-{m:02}-{d:02} {:02}:{:02}:{:02} UTC",
        tod / 3600,
        (tod % 3600) / 60,
        tod % 60
    )
}

pub(crate) fn civil_from_days(z: i64) -> (i64, u32, u32) {
    let z = z + 719468;
    let era = if z >= 0 { z } else { z - 146096 } / 146097;
    let doe = z - era * 146097;
    let yoe = (doe - doe / 1460 + doe / 36524 - doe / 146096) / 365;
    let y = yoe + era * 400;
    let doy = doe - (365 * yoe + yoe / 4 - yoe / 100);
    let mp = (5 * doy + 2) / 153;
    let d = (doy - (153 * mp + 2) / 5 + 1) as u32;
    let m = if mp < 10 { mp + 3 } else { mp - 9 } as u32;
    (if m <= 2 { y + 1 } else { y }, m, d)
}