Factor each commmand into its own package

cmd/size/size.go

@@ -0,0 +1,31 @@
+package size
+
+import (
+	"fmt"
+
+	"github.com/ncw/rclone/cmd"
+	"github.com/ncw/rclone/fs"
+	"github.com/spf13/cobra"
+)
+
+func init() {
+	cmd.Root.AddCommand(sizeCmd)
+}
+
+var sizeCmd = &cobra.Command{
+	Use:   "size remote:path",
+	Short: `Prints the total size and number of objects in remote:path.`,
+	Run: func(command *cobra.Command, args []string) {
+		cmd.CheckArgs(1, 1, command, args)
+		fsrc := cmd.NewFsSrc(args)
+		cmd.Run(false, command, func() error {
+			objects, size, err := fs.Count(fsrc)
+			if err != nil {
+				return err
+			}
+			fmt.Printf("Total objects: %d\n", objects)
+			fmt.Printf("Total size: %s (%d Bytes)\n", fs.SizeSuffix(size).Unit("Bytes"), size)
+			return nil
+		})
+	},
+}