init

vendor/github.com/asticode/go-astitools/string/length.go

@@ -0,0 +1,15 @@
+package astistring
+
+// ToLength forces the length of a string
+func ToLength(i, rpl string, length int) string {
+	if len(i) == length {
+		return i
+	} else if len(i) > length {
+		return i[:length]
+	} else {
+		for idx := 0; idx <= length-len(i); idx++ {
+			i += rpl
+		}
+		return i
+	}
+}

vendor/github.com/asticode/go-astitools/string/rand.go

@@ -0,0 +1,35 @@
+package astistring
+
+import (
+	"math/rand"
+	"time"
+)
+
+const (
+	letterBytes   = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
+	letterIdxBits = 6                    // 6 bits to represent a letter index
+	letterIdxMask = 1<<letterIdxBits - 1 // All 1-bits, as many as letterIdxBits
+	letterIdxMax  = 63 / letterIdxBits   // # of letter indices fitting in 63 bits
+)
+
+var src = rand.NewSource(time.Now().UnixNano())
+
+// RandomString generates a random string
+// https://stackoverflow.com/questions/22892120/how-to-generate-a-random-string-of-a-fixed-length-in-golang
+func RandomString(n int) string {
+	b := make([]byte, n)
+	// A src.Int63() generates 63 random bits, enough for letterIdxMax characters!
+	for i, cache, remain := n-1, src.Int63(), letterIdxMax; i >= 0; {
+		if remain == 0 {
+			cache, remain = src.Int63(), letterIdxMax
+		}
+		if idx := int(cache & letterIdxMask); idx < len(letterBytes) {
+			b[i] = letterBytes[idx]
+			i--
+		}
+		cache >>= letterIdxBits
+		remain--
+	}
+
+	return string(b)
+}