Refactor

utils/utils.go

@@ -1,2 +1,23 @@
 // Package utils collects various services: simple operations, compression, etc.
 package utils
+
+import (
+  "fmt"
+  "os"
+  "golang.org/x/sys/unix"
+)
+
+// check if directory exists and is accessible
+func DirIsAccessible(filename string) error {
+  _, err := os.Stat(filename);
+  if err != nil {
+    if ! os.IsNotExist(err) {
+      return fmt.Errorf("Something went wrong, %v", err)
+    }
+  } else {
+    if unix.Access(filename, unix.W_OK) != nil {
+      return fmt.Errorf("'%s' is inaccessible, check access rights", filename)
+    }
+  }
+  return nil
+}