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[add] The error message prefix

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The user can change it by specifying `errPrefix` by `SetErrPrefix`.
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Souma 2023-08-31 17:33:06 +09:00 • committed by GitHub
parent 285460dca6
commit 48dabba4d3
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1 changed files with 10 additions and 2 deletions
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12
command.go
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@ -181,6 +181,9 @@ type Command struct {
// versionTemplate is the version template defined by user.
versionTemplate string
// errPrefix is the error message prefix defined by user.
errPrefix string
// 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
@ -346,6 +349,11 @@ func (c *Command) SetVersionTemplate(s string) {
c.versionTemplate = s
}
// SetErrPrefix sets error message prefix to be used. Application can use it to set custom prefix.
func (c *Command) SetErrPrefix(s string) {
c.errPrefix = s
}
// SetGlobalNormalizationFunc sets a normalization function to all flag sets and also to child commands.
// The user should not have a cyclic dependency on commands.
func (c *Command) SetGlobalNormalizationFunc(n func(f *flag.FlagSet, name string) flag.NormalizedName) {
@ -1050,7 +1058,7 @@ func (c *Command) ExecuteC() (cmd *Command, err error) {
c = cmd
}
if !c.SilenceErrors {
c.PrintErrln("Error:", err.Error())
c.PrintErrln(c.errPrefix, err.Error())
c.PrintErrf("Run '%v --help' for usage.\n", c.CommandPath())
}
return c, err
@ -1079,7 +1087,7 @@ func (c *Command) ExecuteC() (cmd *Command, err error) {
// If root command has SilenceErrors flagged,
// all subcommands should respect it
if !cmd.SilenceErrors && !c.SilenceErrors {
c.PrintErrln("Error:", err.Error())
c.PrintErrln(c.errPrefix, err.Error())
}
// If root command has SilenceUsage flagged,