Expose OutOrStdout and OutOrStderr and don't make assumptions if output is not set

cobra_test.go

@@ -646,7 +646,7 @@ func TestSubcommandArgEvaluation(t *testing.T) {
 	second := &Command{
 		Use: "second",
 		Run: func(cmd *Command, args []string) {
-			fmt.Fprintf(cmd.getOutOrStdout(), "%v", args)
+			fmt.Fprintf(cmd.OutOrStdout(), "%v", args)
 		},
 	}
 	first.AddCommand(second)

command.go

@@ -110,7 +110,7 @@ type Command struct {
 	flagErrorBuf *bytes.Buffer
 
 	args          []string                 // actual args parsed from flags
-	output        *io.Writer               // nil means stderr; use Out() method instead
+	output        *io.Writer               // out writer if set in SetOutput(w)
 	usageFunc     func(*Command) error     // Usage can be defined by application
 	usageTemplate string                   // Can be defined by Application
 	helpTemplate  string                   // Can be defined by Application
@@ -176,11 +176,11 @@ func (c *Command) SetGlobalNormalizationFunc(n func(f *flag.FlagSet, name string
 	}
 }
 
-func (c *Command) getOutOrStdout() io.Writer {
+func (c *Command) OutOrStdout() io.Writer {
 	return c.getOut(os.Stdout)
 }
 
-func (c *Command) getOutOrStderr() io.Writer {
+func (c *Command) OutOrStderr() io.Writer {
 	return c.getOut(os.Stderr)
 }
 
@@ -236,7 +236,7 @@ func (c *Command) HelpFunc() func(*Command, []string) {
 // Can be defined by user by overriding UsageFunc
 func (c *Command) Usage() error {
 	c.mergePersistentFlags()
-	err := tmpl(c.getOutOrStderr(), c.UsageTemplate(), c)
+	err := tmpl(c.OutOrStderr(), c.UsageTemplate(), c)
 	return err
 }
 
@@ -245,7 +245,7 @@ func (c *Command) Usage() error {
 // by the default HelpFunc in the commander
 func (c *Command) Help() error {
 	c.mergePersistentFlags()
-	err := tmpl(c.getOutOrStdout(), c.HelpTemplate(), c)
+	err := tmpl(c.OutOrStdout(), c.HelpTemplate(), c)
 	return err
 }
 
@@ -833,18 +833,18 @@ main:
 	}
 }
 
-// Print is a convenience method to Print to the defined output
+// Print is a convenience method to Print to the defined output, fallback to Stderr if not set
 func (c *Command) Print(i ...interface{}) {
-	fmt.Fprint(c.getOutOrStderr(), i...)
+	fmt.Fprint(c.OutOrStderr(), i...)
 }
 
-// Println is a convenience method to Println to the defined output
+// Println is a convenience method to Println to the defined output, fallback to Stderr if not set
 func (c *Command) Println(i ...interface{}) {
 	str := fmt.Sprintln(i...)
 	c.Print(str)
 }
 
-// Printf is a convenience method to Printf to the defined output
+// Printf is a convenience method to Printf to the defined output, fallback to Stderr if not set
 func (c *Command) Printf(format string, i ...interface{}) {
 	str := fmt.Sprintf(format, i...)
 	c.Print(str)