Add output configuration

progress/spinner.go

@@ -35,10 +35,14 @@ func NewSpinner(message string, chars []string, delay time.Duration, writer io.W
 
 // NewDefaultSpinner ...
 func NewDefaultSpinner(message string) Spinner {
+	return NewDefaultSpinnerWithOutput(message, os.Stdout)
+}
+
+// NewDefaultSpinnerWithOutput ...
+func NewDefaultSpinnerWithOutput(message string, output io.Writer) Spinner {
 	chars := []string{"⣾", "⣽", "⣻", "⢿", "⡿", "⣟", "⣯", "⣷"}
 	delay := 100 * time.Millisecond
-	writer := os.Stdout
-	return NewSpinner(message, chars, delay, writer)
+	return NewSpinner(message, chars, delay, output)
 }
 
 func (s *Spinner) erase() {

progress/wrapper.go

@@ -2,6 +2,7 @@ package progress
 
 import (
 	"fmt"
+	"io"
 	"os"
 	"strings"
 
@@ -30,6 +31,13 @@ func NewDefaultWrapper(message string) Wrapper {
 	return NewWrapper(spinner, interactiveMode)
 }
 
+// NewDefaultWrapperWithOutput ...
+func NewDefaultWrapperWithOutput(message string, output io.Writer) Wrapper {
+	spinner := NewDefaultSpinnerWithOutput(message, output)
+	interactiveMode := OutputDeviceIsTerminal()
+	return NewWrapper(spinner, interactiveMode)
+}
+
 // WrapAction ...
 func (w Wrapper) WrapAction(action func()) {
 	if w.interactiveMode {