contrib-list: validate github URLs

diff --git a/utils/contrib-list b/utils/contrib-list
index 76f5a15..43d8f15 100755 (executable)
--- a/utils/contrib-list
+++ b/utils/contrib-list
@@ -8,9 +8,22 @@ fi
 prev_version=$1
 linked=$2
 
+githubify() {
+       local url="https://github.com/$name"
+       local response_code=$(curl -o /dev/null --silent --head --write-out '%{http_code}\n' $url)
+
+       if [ "200" != "$response_code" ]; then
+               echo "$response_code: $url" 1>&2;
+       fi
+
+       while read name; do
+               echo " [$name]($url)"
+       done
+}
+
 if [ '-l' == "$linked" ]
 then
-       git log --format="%aN" $prev_version -- | sort | uniq | sed 's#\(.*\)# [\1](http://github.com/\1)#' | tr '\n' ','
+       git log --format="%aN" $prev_version -- | sort | uniq | githubify | tr '\n' ','
 else
        git log --format="%aN <%aE>" $prev_version -- | sort | uniq
 fi