Merge pull request #63 from mum-rs/git-hash-version

2 files changed, 24 insertions, 0 deletions

diff --git a/mumd/build.rs b/mumd/build.rs
new file mode 100644
index 0000000..0a4f506
--- /dev/null
+++ b/mumd/build.rs
@@ -0,0 +1,19 @@
+use std::process::Command;
+
+fn main() {
+    let version = match commit_hash().as_deref() {
+        None | Some("") => format!("v{}", env!("CARGO_PKG_VERSION")),
+        Some(version) => version.to_string(),
+    };
+
+    println!("cargo:rustc-env=VERSION={}", version);
+}
+
+fn commit_hash() -> Option<String> {
+    let output = Command::new("git")
+                         .arg("describe")
+                         .arg("--tags")
+                         .current_dir(env!("CARGO_MANIFEST_DIR"))
+                         .output();
+    output.ok().map(|o| String::from_utf8_lossy(&o.stdout).to_string())
+}
diff --git a/mumd/src/main.rs b/mumd/src/main.rs
index 0526930..7c3745c 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!("mumd {}", env!("VERSION"));
+        return;
+    }
+
     setup_logger(std::io::stderr(), true);
     notify::init();