From dfe231a2b03efa31ae4ff9a43e469144560eec8f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Gustav=20S=C3=B6rn=C3=A4s?= <gustav@sornas.net>
Date: Sat, 16 Jan 2021 02:56:15 +0100
Subject: add a --version that includes commit hash to mum{ctl,d}

---
 mumd/build.rs    | 25 +++++++++++++++++++++++++
 mumd/src/main.rs |  5 +++++
 2 files changed, 30 insertions(+)
 create mode 100644 mumd/build.rs

(limited to 'mumd')

diff --git a/mumd/build.rs b/mumd/build.rs
new file mode 100644
index 0000000..45cfd4e
--- /dev/null
+++ b/mumd/build.rs
@@ -0,0 +1,25 @@
+use std::process::Command;
+
+fn main() {
+    let version = format!(
+        "{} {}-{}",
+        env!("CARGO_PKG_NAME"),
+        env!("CARGO_PKG_VERSION"),
+        commit_hash(),
+    );
+
+    println!("cargo:rustc-env=VERSION={}", version);
+}
+
+fn commit_hash() -> String {
+    let output = Command::new("git")
+                         .arg("show")
+                         .arg("--pretty=format:%h")  // abbrev hash
+                         .current_dir(env!("CARGO_MANIFEST_DIR"))
+                         .output();
+    if let Ok(output) = output {
+        String::from_utf8_lossy(&output.stdout).to_string()
+    } else {
+        String::from("???")
+    }
+}
diff --git a/mumd/src/main.rs b/mumd/src/main.rs
index 0526930..e7b4bec 100644
--- a/mumd/src/main.rs
+++ b/mumd/src/main.rs
@@ -15,6 +15,11 @@ use tokio::task::spawn_blocking;
 
 #[tokio::main]
 async fn main() {
+    if std::env::args().find(|s| s.as_str() == "--version").is_some() {
+        println!(env!("VERSION"));
+        return;
+    }
+
     setup_logger(std::io::stderr(), true);
     notify::init();
 
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