Refactor

pkg/homedir/expand.go

@@ -0,0 +1,13 @@
+package homedir
+
+import (
+	"os"
+)
+
+func Expand(path string) string {
+	if path[0:2] == "~/" {
+		return os.Getenv("HOME") + path[1:]
+	} else {
+		return path
+	}
+}

pkg/randomstring/generate.go

@@ -0,0 +1,18 @@
+package randomstring
+
+import (
+	"crypto/rand"
+	"math/big"
+	"strconv"
+)
+
+func Generate(length int) string {
+	const base = 36
+	size := big.NewInt(base)
+	n := make([]byte, length)
+	for i, _ := range n {
+		c, _ := rand.Int(rand.Reader, size)
+		n[i] = strconv.FormatInt(c.Int64(), base)[0]
+	}
+	return string(n)
+}