1 files changed, 11 insertions, 0 deletions
diff --git a/vendor/gix-index/src/extension/sparse.rs b/vendor/gix-index/src/extension/sparse.rs
new file mode 100644
index 000000000..ab219c8d6
--- /dev/null
+++ b/vendor/gix-index/src/extension/sparse.rs
@@ -0,0 +1,11 @@
+use crate::extension::Signature;
+
+/// The signature of the sparse index extension, nothing more than an indicator at this time.
+pub const SIGNATURE: Signature = *b"sdir";
+
+/// Serialize the sparse index extension to `out`
+pub fn write_to(mut out: impl std::io::Write) -> Result<(), std::io::Error> {
+    out.write_all(&SIGNATURE)?;
+    out.write_all(&0_u32.to_be_bytes())?;
+    Ok(())
+}