Make some API changes (currently broken)

src/util/util.go

@@ -2,9 +2,13 @@ package util
 
 // These are misc. utility functions that didn't really fit anywhere else
 
-import "runtime"
-import "sync"
-import "time"
+import (
+	"runtime"
+	"strconv"
+	"strings"
+	"sync"
+	"time"
+)
 
 // A wrapper around runtime.Gosched() so it doesn't need to be imported elsewhere.
 func Yield() {
@@ -91,3 +95,16 @@ func Difference(a, b []string) []string {
 	}
 	return ab
 }
+
+// DecodeCoordString decodes a string representing coordinates in [1 2 3] format
+// and returns a []byte.
+func DecodeCoordString(in string) (out []uint64) {
+	s := strings.Trim(in, "[]")
+	t := strings.Split(s, " ")
+	for _, a := range t {
+		if u, err := strconv.ParseUint(a, 0, 64); err == nil {
+			out = append(out, u)
+		}
+	}
+	return out
+}