status-go/cmd/statusd/flags.go

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package main
import (
"errors"
"strings"
)
// ErrorEmpty returned when value is empty.
var ErrorEmpty = errors.New("empty value not allowed")
// StringSlice is a type of flag that allows setting multiple string values.
type StringSlice []string
func (s *StringSlice) String() string {
return "string slice"
}
// Set trims space from string and stores it.
func (s *StringSlice) Set(value string) error {
trimmed := strings.TrimSpace(value)
if len(trimmed) == 0 {
return ErrorEmpty
}
*s = append(*s, trimmed)
return nil
}