/
cmd.go
56 lines (49 loc) · 1.29 KB
/
cmd.go
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package client
import (
"errors"
"fmt"
"github.com/spf13/cobra"
"strings"
)
// ValidateCmd returns unknown command error or Help display if help flag set
func ValidateCmd(cmd *cobra.Command, args []string) error {
var unknownCmd string
var skipNext bool
for _, arg := range args {
// search for help flag
if arg == "--help" || arg == "-h" {
return cmd.Help()
}
// check if the current arg is a flag
switch {
case len(arg) > 0 && (arg[0] == '-'):
// the next arg should be skipped if the current arg is a
// flag and does not use "=" to assign the flag's value
if !strings.Contains(arg, "=") {
skipNext = true
} else {
skipNext = false
}
case skipNext:
// skip current arg
skipNext = false
case unknownCmd == "":
// unknown command found
// continue searching for help flag
unknownCmd = arg
}
}
// return the help screen if no unknown command is found
if unknownCmd != "" {
err := fmt.Sprintf("unknown command \"%s\" for \"%s\"", unknownCmd, cmd.CalledAs())
// build suggestions for unknown argument
if suggestions := cmd.SuggestionsFor(unknownCmd); len(suggestions) > 0 {
err += "\n\nDid you mean this?\n"
for _, s := range suggestions {
err += fmt.Sprintf("\t%v\n", s)
}
}
return errors.New(err)
}
return cmd.Help()
}