main.rs: Add version command line option

1 files changed, 6 insertions, 0 deletions

diff --git a/src/main.rs b/src/main.rs
index dd2da1c..c231d90 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -14,6 +14,7 @@ fn main() {
 
     let mut opts = Options::new();
     opts.optflag("h", "help", "print this help menu");
+    opts.optflag("V", "version", "show the program version");
 
     let matches = match opts.parse(&args[1..]) {
         Ok(m) => m,
@@ -28,6 +29,11 @@ fn main() {
         process::exit(exitcode::USAGE);
     }
 
+    if matches.opt_present("V") {
+        println!("{}", env!("CARGO_PKG_VERSION"));
+        process::exit(exitcode::OK);
+    }
+
     let repo = match Repository::open(".") {
         Ok(r) => r,
         Err(e) => {