Add xtask to update upstream submodule (#142)

* Add `xtask` to update upstream submodule

crates/xtask/src/main.rs

@@ -6,13 +6,15 @@
 mod bump;
 mod codegen;
 mod publish;
+mod update;
 mod util;
 
 use anyhow::Result;
 use bump::BumpCommand;
 use clap::{Parser, Subcommand};
 use codegen::CodegenCommand;
 use publish::PublishCommand;
+use update::UpdateCommand;
 
 fn main() -> Result<()> {
     let cli = Cli::parse();
@@ -29,6 +31,8 @@ struct Cli {
 
 #[derive(Debug, Subcommand)]
 enum XtaskCommand {
+    /// Update the upstream OpenVINO Git submodule.
+    Update(UpdateCommand),
     /// Generate the Rust bindings for OpenVINO to use in the openvino-sys crate.
     Codegen(CodegenCommand),
     /// Increment the version of each of the publishable crates.
@@ -40,6 +44,7 @@ enum XtaskCommand {
 impl XtaskCommand {
     fn execute(&self) -> Result<()> {
         match self {
+            Self::Update(update) => update.execute(),
             Self::Codegen(codegen) => codegen.execute(),
             Self::Bump(bump) => bump.execute(),
             Self::Publish(publish) => publish.execute(),

crates/xtask/src/update.rs

@@ -0,0 +1,23 @@
+use crate::util::{exec, path_to_crates};
+use anyhow::Result;
+use clap::Args;
+use std::process::Command;
+
+#[derive(Debug, Args)]
+pub struct UpdateCommand {
+    /// The upstream tag to update to; see <https://github.com/openvinotoolkit/openvino/releases>.
+    #[arg(name = "TAG")]
+    tag: String,
+}
+
+impl UpdateCommand {
+    /// Retrieve the requested tag and checkout the upstream submodule using `git`.
+    pub fn execute(&self) -> Result<()> {
+        let submodule = path_to_crates()?.join("openvino-sys/upstream");
+        let submodule = submodule.to_string_lossy();
+        exec(Command::new("git").args(["-C", &submodule, "fetch", "origin", "tag", &self.tag]))?;
+        exec(Command::new("git").args(["-C", &submodule, "checkout", &self.tag]))?;
+        println!("> to use the updated headers, run `cargo xtask codegen`");
+        Ok(())
+    }
+}

crates/xtask/src/util.rs

@@ -6,6 +6,7 @@ use toml::Value;
 
 /// Convenience wrapper for executing commands.
 pub fn exec(command: &mut Command) -> Result<()> {
+    eprintln!("+ executing: {:?}", &command);
     let status = command.status()?;
     if status.success() {
         Ok(())