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have command.Print print to stdout and print errors and warnings to stderr

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This commit is contained in:
Mislav Marohnić 2022-05-23 19:25:34 +02:00
parent 5b11656e45
commit ed27f317d7
1 changed files with 13 additions and 12 deletions
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25
command.go
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@ -327,6 +327,7 @@ func (c *Command) OutOrStdout() io.Writer {
} }
// OutOrStderr returns output to stderr // OutOrStderr returns output to stderr
// Deprecated: Use OutOrStdout or ErrOrStderr instead
func (c *Command) OutOrStderr() io.Writer { func (c *Command) OutOrStderr() io.Writer {
return c.getOut(os.Stderr) return c.getOut(os.Stderr)
} }
@ -382,7 +383,7 @@ func (c *Command) UsageFunc() (f func(*Command) error) {
} }
return func(c *Command) error { return func(c *Command) error {
c.mergePersistentFlags() c.mergePersistentFlags()
err := tmpl(c.OutOrStderr(), c.UsageTemplate(), c) err := tmpl(c.ErrOrStderr(), c.UsageTemplate(), c)
if err != nil { if err != nil {
c.PrintErrln(err) c.PrintErrln(err)
} }
@ -783,7 +784,7 @@ func (c *Command) execute(a []string) (err error) {
} }
if len(c.Deprecated) > 0 { if len(c.Deprecated) > 0 {
c.Printf("Command %q is deprecated, %s\n", c.Name(), c.Deprecated) c.PrintErrf("Command %q is deprecated, %s\n", c.Name(), c.Deprecated)
} }
// initialize help and version flag at the last point possible to allow for user // initialize help and version flag at the last point possible to allow for user
@ -802,7 +803,7 @@ func (c *Command) execute(a []string) (err error) {
if err != nil { if err != nil {
// should be impossible to get here as we always declare a help // should be impossible to get here as we always declare a help
// flag in InitDefaultHelpFlag() // flag in InitDefaultHelpFlag()
c.Println("\"help\" flag declared as non-bool. Please correct your code") c.PrintErrln("\"help\" flag declared as non-bool. Please correct your code")
return err return err
} }
@ -814,13 +815,13 @@ func (c *Command) execute(a []string) (err error) {
if c.Version != "" { if c.Version != "" {
versionVal, err := c.Flags().GetBool("version") versionVal, err := c.Flags().GetBool("version")
if err != nil { if err != nil {
c.Println("\"version\" flag declared as non-bool. Please correct your code") c.PrintErrln("\"version\" flag declared as non-bool. Please correct your code")
return err return err
} }
if versionVal { if versionVal {
err := tmpl(c.OutOrStdout(), c.VersionTemplate(), c) err := tmpl(c.OutOrStdout(), c.VersionTemplate(), c)
if err != nil { if err != nil {
c.Println(err) c.PrintErrln(err)
} }
return err return err
} }
@ -1004,7 +1005,7 @@ func (c *Command) ExecuteC() (cmd *Command, err error) {
// If root command has SilenceUsage flagged, // If root command has SilenceUsage flagged,
// all subcommands should respect it // all subcommands should respect it
if !cmd.SilenceUsage && !c.SilenceUsage { if !cmd.SilenceUsage && !c.SilenceUsage {
c.Println(cmd.UsageString()) c.PrintErrln(cmd.UsageString())
} }
} }
return cmd, err return cmd, err
@ -1117,7 +1118,7 @@ Simply type ` + c.Name() + ` help [path to command] for full details.`,
Run: func(c *Command, args []string) { Run: func(c *Command, args []string) {
cmd, _, e := c.Root().Find(args) cmd, _, e := c.Root().Find(args)
if cmd == nil || e != nil { if cmd == nil || e != nil {
c.Printf("Unknown help topic %#q\n", args) c.PrintErrf("Unknown help topic %#q\n", args)
CheckErr(c.Root().Usage()) CheckErr(c.Root().Usage())
} else { } else {
cmd.InitDefaultHelpFlag() // make possible 'help' flag to be shown cmd.InitDefaultHelpFlag() // make possible 'help' flag to be shown
@ -1218,17 +1219,17 @@ main:
} }
} }
// Print is a convenience method to Print to the defined output, fallback to Stderr if not set. // Print is a convenience method to Print to the defined output, fallback to Stdout if not set.
func (c *Command) Print(i ...interface{}) { func (c *Command) Print(i ...interface{}) {
fmt.Fprint(c.OutOrStderr(), i...) fmt.Fprint(c.OutOrStdout(), i...)
} }
// Println is a convenience method to Println to the defined output, fallback to Stderr if not set. // Println is a convenience method to Println to the defined output, fallback to Stdout if not set.
func (c *Command) Println(i ...interface{}) { func (c *Command) Println(i ...interface{}) {
c.Print(fmt.Sprintln(i...)) c.Print(fmt.Sprintln(i...))
} }
// Printf is a convenience method to Printf to the defined output, fallback to Stderr if not set. // Printf is a convenience method to Printf to the defined output, fallback to Stdout if not set.
func (c *Command) Printf(format string, i ...interface{}) { func (c *Command) Printf(format string, i ...interface{}) {
c.Print(fmt.Sprintf(format, i...)) c.Print(fmt.Sprintf(format, i...))
} }
@ -1654,7 +1655,7 @@ func (c *Command) ParseFlags(args []string) error {
err := c.Flags().Parse(args) err := c.Flags().Parse(args)
// Print warnings if they occurred (e.g. deprecated flag messages). // Print warnings if they occurred (e.g. deprecated flag messages).
if c.flagErrorBuf.Len()-beforeErrorBufLen > 0 && err == nil { if c.flagErrorBuf.Len()-beforeErrorBufLen > 0 && err == nil {
c.Print(c.flagErrorBuf.String()) c.PrintErr(c.flagErrorBuf.String())
} }
return err return err