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