No external link shorter anymore.

1 files changed, 16 insertions, 0 deletions

diff --git a/crawler/utility.go b/crawler/utility.go
index 5b91c51..d282dbd 100644
--- a/crawler/utility.go
+++ b/crawler/utility.go
@@ -3,9 +3,11 @@ package main
 import (
 	"errors"
 	"math"
+	"math/rand"
 	"regexp"
 	"strconv"
 	"strings"
+	"time"
 
 	"github.com/gocolly/colly"
 )
@@ -370,3 +372,17 @@ func RoundToEven(x float64) float64 {
 	}
 	return t
 }
+
+/*
+ * Returns random string with len n, used for short urls
+ */
+func getRandomString(n int) string {
+	var letters = []rune("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789")
+
+	rand.Seed(time.Now().UnixNano())
+	s := make([]rune, n)
+	for i := range s {
+		s[i] = letters[rand.Intn(len(letters))]
+	}
+	return string(s)
+}