rcd: implement new command just to serve the remote control API

cmd/all/all.go

@@ -43,6 +43,7 @@ import (
 	_ "github.com/ncw/rclone/cmd/purge"
 	_ "github.com/ncw/rclone/cmd/rc"
 	_ "github.com/ncw/rclone/cmd/rcat"
+	_ "github.com/ncw/rclone/cmd/rcd"
 	_ "github.com/ncw/rclone/cmd/reveal"
 	_ "github.com/ncw/rclone/cmd/rmdir"
 	_ "github.com/ncw/rclone/cmd/rmdirs"

cmd/rcd/rcd.go

@@ -0,0 +1,42 @@
+package rcd
+
+import (
+	"log"
+
+	"github.com/ncw/rclone/cmd"
+	"github.com/ncw/rclone/fs/rc"
+	"github.com/ncw/rclone/fs/rc/rcflags"
+	"github.com/spf13/cobra"
+)
+
+func init() {
+	cmd.Root.AddCommand(commandDefintion)
+}
+
+var commandDefintion = &cobra.Command{
+	Use:   "rcd <path to files to serve>*",
+	Short: `Run rclone listening to remote control commands only.`,
+	Long: `
+This runs rclone so that it only listents to remote control commands.
+
+This is useful if you are controlling rclone via the rc API.
+
+If you pass in a path to a directory, rclone will serve that directory
+for GET requests on the URL passed in.  It will also open the URL in
+the browser when rclone is run.
+`,
+	Run: func(command *cobra.Command, args []string) {
+		cmd.CheckArgs(0, 1, command, args)
+		if rcflags.Opt.Enabled {
+			log.Fatalf("Don't supply --rc flag when using rcd")
+		}
+		// Start the rc
+		rcflags.Opt.Enabled = true
+		if len(args) > 0 {
+			rcflags.Opt.Files = args[0]
+		}
+		rc.Start(&rcflags.Opt)
+		// Run the rc forever
+		select {}
+	},
+}