From 640958d36225cbf6d482e193ed4d7d3d44a01d1d Mon Sep 17 00:00:00 2001
From: Dave Reisner <dreisner@archlinux.org>
Date: Sat, 2 Aug 2014 20:10:30 -0400
Subject: remote: cache contents of remotes

---
 remote.inc.sh | 16 ++++++++++++----
 1 file changed, 12 insertions(+), 4 deletions(-)

diff --git a/remote.inc.sh b/remote.inc.sh
index 389f105..1554d3a 100644
--- a/remote.inc.sh
+++ b/remote.inc.sh
@@ -1,14 +1,22 @@
+declare -A refcache=()
+
 remote_get_all_refs() {
   local remote=$1
 
-  mapfile -t "$2" < <(git ls-remote "$remote" 'refs/heads/packages/*' |
-      awk '{ sub(/refs\/heads\//, "", $2); print $2 }')
+  if [[ -z ${refcache["$remote"]} ]]; then
+    refcache["$remote"]=$(git ls-remote "$remote" 'refs/heads/packages/*' |
+        awk '{ sub(/refs\/heads\//, "", $2); print $2 }')
+  fi
+
+  mapfile -t "$2" <<<"${refcache["$remote"]}"
 }
 
 remote_has_package() {
-  local remote=$1 pkgname=$2
+  local remote=$1 pkgname=$2 refs
+
+  remote_get_all_refs "$remote" refs
 
-  git ls-remote --heads --exit-code "$remote" "$pkgname" &>/dev/null
+  in_array "$remote/$pkgname" "${refs[@]}"
 }
 
 remote_is_tracking() {
-- 
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