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package main
import (
"errors"
"strings"
)
var errMultiStringSetEmptyValue = errors.New("value cannot be empty")
// MultiStringFlag implements the flag.Value interface and allows a string flag
// to be specified multiple times on the command line.
//
// e.g.: -listen-http 127.0.0.1:80 -listen-http [::1]:80
type MultiStringFlag []string
// String returns the list of parameters joined with a commas (",")
func (s *MultiStringFlag) String() string {
return strings.Join(*s, ",")
}
// Set appends the value to the list of parameters
func (s *MultiStringFlag) Set(value string) error {
if value == "" {
return errMultiStringSetEmptyValue
}
*s = append(*s, value)
return nil
}
// Split each flag
func (s *MultiStringFlag) Split() (result []string) {
for _, str := range *s {
result = append(result, strings.Split(str, ",")...)
}
return
}
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