add version information about zkevm-circuits

prover/build.rs

@@ -0,0 +1,50 @@
+use std::env::var;
+use std::fs::File;
+use std::io::Read;
+use std::io::Write;
+use std::process::Command;
+
+fn get_crate_version(pkg: &str) -> String {
+    let cmd = Command::new("cargo")
+        .args([
+            "tree",
+            "--package",
+            pkg,
+            "--depth",
+            "0",
+            "--prefix",
+            "none",
+            "--quiet",
+            "--charset",
+            "utf8",
+        ])
+        .output()
+        .expect("cargo tree output");
+
+    String::from_utf8(cmd.stdout).expect("utf8 output")
+}
+
+fn main() {
+    let pkg_version = var("CARGO_PKG_VERSION").expect("CARGO_PKG_VERSION");
+    let version = format!(
+        "pub const VERSION: &str = \"{}\n{}\";",
+        pkg_version,
+        get_crate_version("zkevm-circuits"),
+    );
+
+    let path = "src/version.rs";
+    let update = match File::open(path) {
+        Ok(mut file) => {
+            let mut buffer = String::new();
+            file.read_to_string(&mut buffer).expect("read version.rs");
+            buffer != version
+        }
+        Err(_) => true,
+    };
+
+    if update {
+        let mut file = File::create(path).expect("create version.rs");
+        file.write_all(version.as_bytes())
+            .expect("write version.rs");
+    }
+}

prover/src/bin/prover_rpcd.rs

@@ -3,9 +3,10 @@ use env_logger::Env;
 
 use prover::server::serve;
 use prover::shared_state::SharedState;
+use prover::version::VERSION;
 
 #[derive(Parser, Debug)]
-#[clap(version, about)]
+#[clap(version = VERSION, about)]
 /// This command starts a http/json-rpc server and serves proof oriented methods.
 pub(crate) struct ProverdConfig {
     #[clap(long, env = "PROVERD_BIND")]

prover/src/lib.rs

@@ -19,3 +19,4 @@ pub mod circuits;
 pub mod server;
 pub mod shared_state;
 pub mod utils;
+pub mod version;

prover/src/version.rs

@@ -0,0 +1,3 @@
+pub const VERSION: &str = "0.1.0
+zkevm-circuits v0.1.0 (https://github.com/pinkiebell/zkevm-circuits.git?branch=zkevm-chain#27141e57)
+";