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moby--moby/cli/cobra.go
Cao Weiwei cec564984e Fix typo
Signed-off-by: Cao Weiwei <cao.weiwei30@zte.com.cn>
2016-08-28 21:30:14 +08:00

57 lines
1.5 KiB
Go

package cli
import (
"fmt"
"github.com/spf13/cobra"
)
// SetupRootCommand sets default usage, help, and error handling for the
// root command.
func SetupRootCommand(rootCmd *cobra.Command) {
rootCmd.SetUsageTemplate(usageTemplate)
rootCmd.SetHelpTemplate(helpTemplate)
rootCmd.SetFlagErrorFunc(FlagErrorFunc)
rootCmd.PersistentFlags().BoolP("help", "h", false, "Print usage")
rootCmd.PersistentFlags().MarkShorthandDeprecated("help", "please use --help")
}
// FlagErrorFunc prints an error message which matches the format of the
// docker/docker/cli error messages
func FlagErrorFunc(cmd *cobra.Command, err error) error {
if err == nil {
return err
}
usage := ""
if cmd.HasSubCommands() {
usage = "\n\n" + cmd.UsageString()
}
return StatusError{
Status: fmt.Sprintf("%s\nSee '%s --help'.%s", err, cmd.CommandPath(), usage),
StatusCode: 125,
}
}
var usageTemplate = `Usage: {{if not .HasSubCommands}}{{.UseLine}}{{end}}{{if .HasSubCommands}}{{ .CommandPath}} COMMAND{{end}}
{{ .Short | trim }}{{if gt .Aliases 0}}
Aliases:
{{.NameAndAliases}}{{end}}{{if .HasExample}}
Examples:
{{ .Example }}{{end}}{{if .HasFlags}}
Options:
{{.Flags.FlagUsages | trimRightSpace}}{{end}}{{ if .HasAvailableSubCommands}}
Commands:{{range .Commands}}{{if .IsAvailableCommand}}
{{rpad .Name .NamePadding }} {{.Short}}{{end}}{{end}}{{end}}{{ if .HasSubCommands }}
Run '{{.CommandPath}} COMMAND --help' for more information on a command.{{end}}
`
var helpTemplate = `
{{if or .Runnable .HasSubCommands}}{{.UsageString}}{{end}}`