output: Added some helpers and missing license

Author: cmaglie

cli/output.go

@@ -1,4 +1,19 @@
 //
+// This file is part of arduino-cli.
+//
+// Copyright 2018 ARDUINO SA (http://www.arduino.cc/)
+//
+// This software is released under the GNU General Public License version 3,
+// which covers the main part of arduino-cli.
+// The terms of this license can be found at:
+// https://www.gnu.org/licenses/gpl-3.0.en.html
+//
+// You can be released from the requirements of the above licenses by purchasing
+// a commercial license. Buying such a license is mandatory if you want to modify or
+// otherwise use the software for commercial activities involving the Arduino
+// software without disclosing the source code of your own applications. To purchase
+// a commercial license, send an email to [email protected].
+//
 
 package cli
 

output/rpc_progress.go

@@ -20,7 +20,6 @@ package output
 import (
 	"fmt"
 
-	"github.com/arduino/arduino-cli/commands"
 	"github.com/arduino/arduino-cli/rpc"
 	pb "gopkg.in/cheggaaa/pb.v1"
 )
@@ -51,9 +50,14 @@ func NewDownloadProgressBarCB() func(*rpc.DownloadProgress) {
 	}
 }
 
+// NewNullDownloadProgressCB returns a progress bar callback that outputs nothing.
+func NewNullDownloadProgressCB() func(*rpc.DownloadProgress) {
+	return func(*rpc.DownloadProgress) {}
+}
+
 // NewTaskProgressCB returns a commands.TaskProgressCB progress listener
 // that outputs to terminal
-func NewTaskProgressCB() commands.TaskProgressCB {
+func NewTaskProgressCB() func(curr *rpc.TaskProgress) {
 	var name string
 	return func(curr *rpc.TaskProgress) {
 		// fmt.Printf(">>> %v\n", curr)
@@ -74,3 +78,8 @@ func NewTaskProgressCB() commands.TaskProgressCB {
 		}
 	}
 }
+
+// NewNullTaskProgressCB returns a progress bar callback that outputs nothing.
+func NewNullTaskProgressCB() func(curr *rpc.TaskProgress) {
+	return func(curr *rpc.TaskProgress) {}
+}