From 5dff49f661cd221fc457d1a4660cd36f28266dc5 Mon Sep 17 00:00:00 2001
From: Eelco Dolstra <edolstra@gmail.com>
Date: Fri, 10 Jul 2020 13:21:37 +0200
Subject: Factor out commonality between nix-prefetch-url and nix-store
 --add-fixed

---
 src/libstore/content-address.cc | 12 ++++++++++++
 1 file changed, 12 insertions(+)

(limited to 'src/libstore/content-address.cc')

diff --git a/src/libstore/content-address.cc b/src/libstore/content-address.cc
index 3d753836f..6cb69d0a9 100644
--- a/src/libstore/content-address.cc
+++ b/src/libstore/content-address.cc
@@ -82,4 +82,16 @@ std::string renderContentAddress(std::optional<ContentAddress> ca) {
     return ca ? renderContentAddress(*ca) : "";
 }
 
+Hash getContentAddressHash(const ContentAddress & ca)
+{
+    return std::visit(overloaded {
+        [](TextHash th) {
+            return th.hash;
+        },
+        [](FixedOutputHash fsh) {
+            return fsh.hash;
+        }
+    }, ca);
+}
+
 }
-- 
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