some updates

fileinfo.go

@@ -0,0 +1,29 @@
+package filemanager
+
+import (
+	"os"
+	"time"
+
+	"github.com/dustin/go-humanize"
+)
+
+// FileInfo is the info about a particular file or directory
+type FileInfo struct {
+	IsDir   bool
+	Name    string
+	Size    int64
+	URL     string
+	ModTime time.Time
+	Mode    os.FileMode
+}
+
+// HumanSize returns the size of the file as a human-readable string
+// in IEC format (i.e. power of 2 or base 1024).
+func (fi FileInfo) HumanSize() string {
+	return humanize.IBytes(uint64(fi.Size))
+}
+
+// HumanModTime returns the modified time of the file as a human-readable string.
+func (fi FileInfo) HumanModTime(format string) string {
+	return fi.ModTime.Format(format)
+}