20 lines
369 B
Go
20 lines
369 B
Go
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package validate
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import (
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"fmt"
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"strings"
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)
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// Chars validates whether a string contains only allowed characters.
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func Chars(allow string) func(string) error {
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return func(value string) error {
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rs := []rune(value)
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for _, r := range rs {
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if !strings.ContainsRune(allow, r) {
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return fmt.Errorf("Contains disallowed characters")
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}
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}
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return nil
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}
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}
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