WIP: move to xtasks

1 files changed, 31 insertions, 0 deletions

diff --git a/xtask/src/bin/pre-commit.rs b/xtask/src/bin/pre-commit.rs
new file mode 100644
index 000000000..16bbf9cb2
--- /dev/null
+++ b/xtask/src/bin/pre-commit.rs
@@ -0,0 +1,31 @@
+//! FIXME: write short doc here
+
+use std::process::Command;
+
+use ra_tools::{project_root, run, run_rustfmt, Overwrite, Result};
+
+fn main() -> Result<()> {
+    run_rustfmt(Overwrite)?;
+    update_staged()
+}
+
+fn update_staged() -> Result<()> {
+    let root = project_root();
+    let output = Command::new("git")
+        .arg("diff")
+        .arg("--diff-filter=MAR")
+        .arg("--name-only")
+        .arg("--cached")
+        .current_dir(&root)
+        .output()?;
+    if !output.status.success() {
+        Err(format!(
+            "`git diff --diff-filter=MAR --name-only --cached` exited with {}",
+            output.status
+        ))?;
+    }
+    for line in String::from_utf8(output.stdout)?.lines() {
+        run(&format!("git update-index --add {}", root.join(line).to_string_lossy()), ".")?;
+    }
+    Ok(())
+}