X-Git-Url: http://git.openwrt.org/?p=openwrt%2Fstaging%2Fwigyori.git;a=blobdiff_plain;f=include%2Fshell.sh;h=6389304c24bdd7f798b3a71f957dbfaad9cfa3e5;hp=6ee0cf6030ac5e0a71d7be1c2438c58ee9724caf;hb=7002f6326e9dcd4cb3272763ba9b9debd9f3a60d;hpb=60c1f0f64d23003a19a07d6b9638542130f6641d

diff --git a/include/shell.sh b/include/shell.sh
index 6ee0cf6030..6389304c24 100644
--- a/include/shell.sh
+++ b/include/shell.sh
@@ -13,3 +13,25 @@ isset() {
 	eval "var=\"\${$1}\""
 	[ -n "$var" ]
 }
+
+trapret() {(
+	local retvals="$1"; shift
+	local cmd="$1"; shift
+	for retval in $(echo $retvals); do
+		local trap_$retval=1
+	done
+	"$cmd" "$@" || {
+		local retval="$?"
+		eval "trapped=\${trap_$retval}"
+		[ -n "$trapped" ] || {
+			return $retval
+		}
+	}
+)}
+
+md5s() {
+	cat "$@" | (
+		md5sum 2>/dev/null ||
+		md5
+	) | awk '{print $1}'
+}