From 2136516ff576e746b98b676e5d3a1903848806c1 Mon Sep 17 00:00:00 2001
From: Ian Jackson <ijackson@chiark.greenend.org.uk>
Date: Mon, 3 May 2021 19:51:36 +0100
Subject: [PATCH] utils: provide DigestWrite::sink

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>
---
 src/bin/otter.rs | 2 +-
 src/utils.rs     | 3 +++
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/bin/otter.rs b/src/bin/otter.rs
index 13f708a1..a90d25f1 100644
--- a/src/bin/otter.rs
+++ b/src/bin/otter.rs
@@ -1342,7 +1342,7 @@ mod upload_bundle {
       .context("open bundle file")?;
     let mut f = BufReader::new(f);
     let hash = {
-      let mut dw = DigestWrite::<bundles::Digester,_>::new(io::sink());
+      let mut dw = DigestWrite::<bundles::Digester,_>::sink();
       io::copy(&mut f, &mut dw).context("read bundle file (for hash)")?;
       dw.finish().0
     };
diff --git a/src/utils.rs b/src/utils.rs
index 204a3679..fd27c32a 100644
--- a/src/utils.rs
+++ b/src/utils.rs
@@ -582,6 +582,9 @@ impl<D: Digest, W: Write> DigestWrite<D, W> {
     (self.d.finalize(), self.w)
   }
 }
+impl<D: Digest> DigestWrite<D, io::Sink> {
+  pub fn sink() -> Self { DigestWrite::new(io::sink()) }
+}
 
 impl<D: Digest, W: Write> Write for DigestWrite<D, W> {
   #[throws(io::Error)]
-- 
2.30.2