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refactor: rename out/err stream vars/funcs

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Tiago Carreira 2023-10-02 01:37:31 +01:00
parent 5a0bfd38d5
commit 2f70b7caa3
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GPG key ID: 3F13CBCC0395F78C
1 changed files with 40 additions and 36 deletions
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76
command.go
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@ -186,15 +186,17 @@ type Command struct {
// inReader is a reader defined by the user that replaces stdin
inReader io.Reader
// outWriter is a writer defined by the user that replaces stdout
outWriter io.Writer
// errWriter is a writer defined by the user that replaces stderr
errWriter io.Writer
// legacyOutWriter is a writer defined by the user that replaces stdout.
// Deprecated: use outStreamWriter instead (see https://github.com/spf13/cobra/issues/1708)
legacyOutWriter io.Writer
// legacyErrWriter is a writer defined by the user that replaces stderr.
// Deprecated: use errStreamWriter instead (see https://github.com/spf13/cobra/issues/1708)
legacyErrWriter io.Writer
// outFallbackWriter is a writer defined by the user that is used if outWriter is nil
outFallbackWriter io.Writer
// errFallbackWriter is a writer defined by the user that is used if errWriter is nil
errFallbackWriter io.Writer
// outStreamWriter is a writer defined by the user that replaces stdout
outStreamWriter io.Writer
// errStreamWriter is a writer defined by the user that replaces stderr
errStreamWriter io.Writer
// FParseErrWhitelist flag parse errors to be ignored
FParseErrWhitelist FParseErrWhitelist
@ -281,34 +283,36 @@ func (c *Command) SetArgs(a []string) {
// If output is nil, os.Stderr is used.
// Deprecated: Use SetOut and/or SetErr instead
func (c *Command) SetOutput(output io.Writer) {
c.outWriter = output
c.errWriter = output
c.legacyOutWriter = output
c.legacyErrWriter = output
}
// SetOut sets the destination for usage messages.
// If newOut is nil, os.Stdout is used.
// Deprecated: Use SetOutFallback and/or SetErrFallback instead (see https://github.com/spf13/cobra/issues/1708)
func (c *Command) SetOut(newOut io.Writer) {
c.outWriter = newOut
c.legacyOutWriter = newOut
}
// SetErr sets the destination for error messages.
// If newErr is nil, os.Stderr is used.
// Deprecated: Use SetOutFallback and/or SetErrFallback instead (see https://github.com/spf13/cobra/issues/1708)
func (c *Command) SetErr(newErr io.Writer) {
c.errWriter = newErr
c.legacyErrWriter = newErr
}
// SetOutFallback sets the destination for usage messages when SetOut() was not used.
// SetOutStream sets the destination for usage messages.
// It includes (at least): --help, --version, completion.
// If newOut is nil, os.Stdout is used.
func (c *Command) SetOutFallback(newOut io.Writer) {
c.outFallbackWriter = newOut
func (c *Command) SetOutStream(newOut io.Writer) {
c.outStreamWriter = newOut
}
// SetErrFallback sets the destination for error messages when SetErr() was not used.
// SetErrStream sets the destination for error messages.
// It includes (at least): errors, usage, deprecations msgs, unknowns cmds/flags/topics msgs, DebugFlags.
// If newErr is nil, os.Stderr is used.
func (c *Command) SetErrFallback(newErr io.Writer) {
c.errFallbackWriter = newErr
func (c *Command) SetErrStream(newErr io.Writer) {
c.errStreamWriter = newErr
}
// SetIn sets the source for input data
@ -407,11 +411,11 @@ func (c *Command) InOrStdin() io.Reader {
}
func (c *Command) getOut(def io.Writer) io.Writer {
if c.outWriter != nil {
return c.outWriter
if c.legacyOutWriter != nil {
return c.legacyOutWriter
}
if c.outFallbackWriter != nil {
return c.outFallbackWriter
if c.outStreamWriter != nil {
return c.outStreamWriter
}
if c.HasParent() {
return c.parent.getOut(def)
@ -420,11 +424,11 @@ func (c *Command) getOut(def io.Writer) io.Writer {
}
func (c *Command) getErr(def io.Writer) io.Writer {
if c.errWriter != nil {
return c.errWriter
if c.legacyErrWriter != nil {
return c.legacyErrWriter
}
if c.errFallbackWriter != nil {
return c.errFallbackWriter
if c.errStreamWriter != nil {
return c.errStreamWriter
}
if c.HasParent() {
return c.parent.getErr(def)
@ -436,11 +440,11 @@ func (c *Command) getErr(def io.Writer) io.Writer {
// Deprecated: this function exists to allow for backwards compatibility only
// (see https://github.com/spf13/cobra/issues/1708)
func (c *Command) getOutFallbackToErr(def io.Writer) io.Writer {
if c.outWriter != nil {
return c.outWriter
if c.legacyOutWriter != nil {
return c.legacyOutWriter
}
if c.errFallbackWriter != nil {
return c.errFallbackWriter
if c.errStreamWriter != nil {
return c.errStreamWriter
}
if c.HasParent() {
return c.parent.getOutFallbackToErr(def)
@ -515,18 +519,18 @@ func (c *Command) Help() error {
// UsageString returns usage string.
func (c *Command) UsageString() string {
// Storing normal writers
tmpOutput := c.outWriter
tmpErr := c.errWriter
tmpOutput := c.legacyOutWriter
tmpErr := c.legacyErrWriter
bb := new(bytes.Buffer)
c.outWriter = bb
c.errWriter = bb
c.legacyOutWriter = bb
c.legacyErrWriter = bb
CheckErr(c.Usage())
// Setting things back to normal
c.outWriter = tmpOutput
c.errWriter = tmpErr
c.legacyOutWriter = tmpOutput
c.legacyErrWriter = tmpErr
return bb.String()
}