bherbruckandClaude Opus 5.5
bfa70f005b
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01AS5Tn3xieewUSg3uxrMVdL
38 lines
1.7 KiB
Rust
38 lines
1.7 KiB
Rust
//! Build information for Help › About: the git commit and the build date (UTC). Both fall back to
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//! "unknown" when git is missing (a source tarball).
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use std::process::Command;
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use std::time::{SystemTime, UNIX_EPOCH};
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fn git(args: &[&str]) -> Option<String> {
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let out = Command::new("git").args(args).output().ok()?;
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out.status.success().then(|| String::from_utf8_lossy(&out.stdout).trim().to_string()).filter(|s| !s.is_empty())
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}
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/// Days since 1970-01-01 to a civil date (proleptic Gregorian).
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fn civil(days: i64) -> (i64, i64, i64) {
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let z = days + 719_468;
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let era = z.div_euclid(146_097);
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let doe = z - era * 146_097;
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let yoe = (doe - doe / 1460 + doe / 36_524 - doe / 146_096) / 365;
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let doy = doe - (365 * yoe + yoe / 4 - yoe / 100);
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let mp = (5 * doy + 2) / 153;
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let d = doy - (153 * mp + 2) / 5 + 1;
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let m = if mp < 10 { mp + 3 } else { mp - 9 };
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(yoe + era * 400 + i64::from(m <= 2), m, d)
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}
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fn main() {
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let commit = git(&["rev-parse", "--short", "HEAD"]).unwrap_or_else(|| "unknown".into());
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let dirty = git(&["status", "--porcelain", "--untracked-files=no"]).is_some();
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let secs = SystemTime::now().duration_since(UNIX_EPOCH).map(|d| d.as_secs() as i64).unwrap_or(0);
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let (y, m, d) = civil(secs.div_euclid(86_400));
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println!("cargo:rustc-env=SOLVECRAFT_COMMIT={commit}{}", if dirty { "+" } else { "" });
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println!("cargo:rustc-env=SOLVECRAFT_BUILD_DATE={y:04}-{m:02}-{d:02}");
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// A new commit in this checkout (or worktree) restamps the build.
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if let Some(dir) = git(&["rev-parse", "--git-dir"]) {
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println!("cargo:rerun-if-changed={dir}/logs/HEAD");
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}
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println!("cargo:rerun-if-changed=build.rs");
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}
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