2 files changed, 33 insertions, 0 deletions
diff --git a/build.rs b/build.rs
new file mode 100644
index 0000000..fef4321
--- /dev/null
+++ b/build.rs
@@ -0,0 +1,16 @@
+use std::process::Command;
+
+fn main() {
+    let build = String::from_utf8_lossy(
+        &Command::new("git")
+            .args(&["rev-parse", "HEAD"])
+            .output()
+            .unwrap()
+            .stdout,
+    )
+    .to_string();
+    println!(
+        "cargo::rustc-env=DWVSH_BUILD={}",
+        build.get(0..10).unwrap_or(&build)
+    );
+}
diff --git a/src/main.rs b/src/main.rs
index 821dde2..f87b69d 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -82,6 +82,20 @@ fn repl(away: &mut Arc<Mutex<bool>>, env: &mut Environment) {
     }
 }
 
+fn options() {
+    let args: Vec<String> = env::args().collect();
+    for arg in args.iter() {
+        if arg.eq("--version") {
+            println!(
+                "dwvsh v{} ({})",
+                env!("CARGO_PKG_VERSION"),
+                env!("DWVSH_BUILD")
+            );
+            std::process::exit(0);
+        }
+    }
+}
+
 /// Shell entry
 ///
 /// Shell setup and entry
@@ -108,6 +122,9 @@ fn main() {
         .unwrap();
     };
 
+    // Parse flags and other arguments
+    options();
+
     // Begin evaluating commands
     repl(&mut away, &mut env);
 }