61 lines
1.4 KiB
Go
61 lines
1.4 KiB
Go
package autocli
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import (
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"errors"
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"fmt"
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"strings"
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"github.com/spf13/cobra"
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)
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// NOTE: this was copied from client/cmd.go to avoid introducing a dependency
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// on the v1 client package.
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// validateCmd returns unknown command error or Help display if help flag set
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func validateCmd(cmd *cobra.Command, args []string) error {
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var unknownCmd string
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var skipNext bool
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for _, arg := range args {
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// search for help flag
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if arg == "--help" || arg == "-h" {
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return cmd.Help()
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}
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// check if the current arg is a flag
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switch {
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case len(arg) > 0 && (arg[0] == '-'):
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// the next arg should be skipped if the current arg is a
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// flag and does not use "=" to assign the flag's value
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if !strings.Contains(arg, "=") {
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skipNext = true
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} else {
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skipNext = false
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}
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case skipNext:
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// skip current arg
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skipNext = false
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case unknownCmd == "":
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// unknown command found
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// continue searching for help flag
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unknownCmd = arg
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}
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}
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// return the help screen if no unknown command is found
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if unknownCmd != "" {
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err := fmt.Sprintf("unknown command \"%s\" for \"%s\"", unknownCmd, cmd.CalledAs())
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// build suggestions for unknown argument
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if suggestions := cmd.SuggestionsFor(unknownCmd); len(suggestions) > 0 {
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err += "\n\nDid you mean this?\n"
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for _, s := range suggestions {
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err += fmt.Sprintf("\t%v\n", s)
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}
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}
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return errors.New(err)
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}
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return cmd.Help()
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}
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