Add high scores bucket to bolt

handlers/score_heap.go

@@ -0,0 +1,28 @@
+package handlers
+
+type scoreItem struct {
+	Repo  string  `json:"repo"`
+	Score float64 `json:"score"`
+	Files int     `json:"files"`
+}
+
+// An scoreHeap is a min-heap of ints.
+type scoreHeap []scoreItem
+
+func (h scoreHeap) Len() int           { return len(h) }
+func (h scoreHeap) Less(i, j int) bool { return h[i].Score < h[j].Score }
+func (h scoreHeap) Swap(i, j int)      { h[i], h[j] = h[j], h[i] }
+
+func (h *scoreHeap) Push(x interface{}) {
+	// Push and Pop use pointer receivers because they modify the slice's length,
+	// not just its contents.
+	*h = append(*h, x.(scoreItem))
+}
+
+func (h *scoreHeap) Pop() interface{} {
+	old := *h
+	n := len(old)
+	x := old[n-1]
+	*h = old[0 : n-1]
+	return x
+}