From f9bd3cdc522fba2d5e19b018308113a4258c0f43 Mon Sep 17 00:00:00 2001
From: "Hatter Jiang@Pixelbook" <jht5945@gmail.com>
Date: Thu, 1 Aug 2019 08:47:24 +0800
Subject: [PATCH] add git hash

---
 build.rs    | 7 +++++++
 src/main.rs | 3 ++-
 2 files changed, 9 insertions(+), 1 deletion(-)
 create mode 100644 build.rs

diff --git a/build.rs b/build.rs
new file mode 100644
index 0000000..63ac78b
--- /dev/null
+++ b/build.rs
@@ -0,0 +1,7 @@
+use std::process::Command;
+fn main() {
+    // note: add error checking yourself.
+    let output = Command::new("git").args(&["rev-parse", "HEAD"]).output().unwrap();
+    let git_hash = String::from_utf8(output.stdout).unwrap();
+    println!("cargo:rustc-env=GIT_HASH={}", git_hash);
+}
diff --git a/src/main.rs b/src/main.rs
index 62bfee9..97b76c1 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -28,6 +28,7 @@ use build_json::*;
 
 const BUILDJ: &str = "buildj";
 const BUDERJ_VER: &str = env!("CARGO_PKG_VERSION");
+const GIT_HASH: &str = env!("GIT_HASH");
 
 
 fn print_usage() {
@@ -150,7 +151,7 @@ fn do_with_buildin_args(args: &Vec<String>) {
 
 
 fn main() {
-    print_message(MessageType::INFO, &format!("{} - version {}", BUILDJ, BUDERJ_VER));
+    print_message(MessageType::INFO, &format!("{} - version {} - {}", BUILDJ, BUDERJ_VER, &GIT_HASH[0..7]));
 
     let args = local_util::get_args_as_vec();
     print_message(MessageType::INFO, &format!("Arguments: {:?}", args));