[PATCH 3/3] dim: check for updates daily, not at random

[Jani Nikula]

Use a timestamp file to check for updates every 24 hours.

Signed-off-by: Jani Nikula <jani.nikula at intel.com>
---
 dim | 18 +++++++++++++++---
 1 file changed, 15 insertions(+), 3 deletions(-)

diff --git a/dim b/dim
index 578e76cbc273..527989aff9ad 100755
--- a/dim
+++ b/dim
@@ -378,6 +378,20 @@ function dim_uptodate
 	fi
 }
 
+function check_for_updates
+{
+	local stamp stampfile
+
+	stampfile=$HOME/.dim-update-check-timestamp
+
+	# daily check for updates based on file timestamp
+	stamp=$(stat --printf=%Y $stampfile 2>/dev/null || echo -n 0)
+	if [[ $((stamp + 24*60*60)) -lt $(date +%s) ]]; then
+		dim_uptodate || true
+		touch $stampfile
+	fi
+}
+
 function git_fetch_helper # remote
 {
 	local remote
@@ -2103,9 +2117,7 @@ function dim_usage
 }
 
 # occasional check for dim updates
-if [[ "$(($(date +%s) % 100))" -eq "0" ]] ; then
-        dim_uptodate || true
-fi
+check_for_updates
 
 # dim subcommand aliases (with bash 4.3+)
 if ! declare -n subcmd=dim_alias_${subcommand//-/_} &> /dev/null || \
-- 
2.11.0