Initial commit

server/internal/store/mapkey.go

@@ -0,0 +1,32 @@
+package store
+
+import (
+	"fmt"
+	"strconv"
+	"strings"
+)
+
+func marshalKey(vals ...int64) []byte {
+	b := strconv.AppendInt(nil, vals[0], 10)
+	for _, v := range vals[1:] {
+		b = append(b, ':')
+		b = strconv.AppendInt(b, v, 10)
+	}
+	return b
+}
+
+func unmarshalKey(text []byte, name string, n int) ([]int64, error) {
+	parts := strings.Split(string(text), ":")
+	if len(parts) != n {
+		return nil, fmt.Errorf("invalid %s: %s", name, text)
+	}
+	out := make([]int64, n)
+	for i, p := range parts {
+		v, err := strconv.ParseInt(p, 10, 64)
+		if err != nil {
+			return nil, err
+		}
+		out[i] = v
+	}
+	return out, nil
+}