Implement rclone size for measuring remotes - fixes #153

fs/operations.go

@@ -8,6 +8,7 @@ import (
 	"mime"
 	"path"
 	"sync"
+	"sync/atomic"
 	"time"
 )
 
@@ -680,6 +681,15 @@ func Md5sum(f Fs, w io.Writer) error {
 	})
 }
 
+// Count counts the objects and their sizes in the Fs
+func Count(f Fs) (objects int64, size int64, err error) {
+	err = ListFn(f, func(o Object) {
+		atomic.AddInt64(&objects, 1)
+		atomic.AddInt64(&size, o.Size())
+	})
+	return
+}
+
 // ListDir lists the directories/buckets/containers in the Fs to the supplied writer
 func ListDir(f Fs, w io.Writer) error {
 	for dir := range f.ListDir() {