Add intel package with filter list mgmt stubs

intel/lists.go

@@ -0,0 +1,40 @@
+package intel
+
+// ListSet holds a set of list IDs.
+type ListSet struct {
+	match []string
+}
+
+// NewListSet returns a new ListSet with the given list IDs.
+func NewListSet(lists []string) *ListSet {
+	// TODO: validate lists
+	return &ListSet{
+		match: lists,
+	}
+}
+
+// Matches returns whether there is a match in the given list IDs.
+func (ls *ListSet) Matches(lists []string) (matches bool) {
+	for _, list := range lists {
+		for _, entry := range ls.match {
+			if entry == list {
+				return true
+			}
+		}
+	}
+
+	return false
+}
+
+// MatchSet returns the matching list IDs.
+func (ls *ListSet) MatchSet(lists []string) (matched []string) {
+	for _, list := range lists {
+		for _, entry := range ls.match {
+			if entry == list {
+				matched = append(matched, list)
+			}
+		}
+	}
+
+	return
+}