eg

scanner/dir_stack.go

@@ -0,0 +1,37 @@
+package scanner
+
+import (
+	"github.com/sentriz/gonic/model"
+)
+
+type dirStack []*model.Folder
+
+func (s *dirStack) Push(v *model.Folder) {
+	*s = append(*s, v)
+}
+
+func (s *dirStack) Pop() *model.Folder {
+	l := len(*s)
+	if l == 0 {
+		return nil
+	}
+	r := (*s)[l-1]
+	*s = (*s)[:l-1]
+	return r
+}
+
+func (s *dirStack) Peek() *model.Folder {
+	l := len(*s)
+	if l == 0 {
+		return nil
+	}
+	return (*s)[l-1]
+}
+
+func (s *dirStack) PeekID() int {
+	l := len(*s)
+	if l == 0 {
+		return 0
+	}
+	return (*s)[l-1].ID
+}