29 lines
477 B
Go
29 lines
477 B
Go
package gemini
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import (
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"net"
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"unicode/utf8"
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"golang.org/x/net/idna"
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)
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func isASCII(s string) bool {
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for i := 0; i < len(s); i++ {
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if s[i] >= utf8.RuneSelf {
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return false
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}
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}
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return true
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}
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// punycodeHostname returns the punycoded version of hostname.
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func punycodeHostname(hostname string) (string, error) {
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if net.ParseIP(hostname) != nil {
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return hostname, nil
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}
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if isASCII(hostname) {
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return hostname, nil
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}
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return idna.Lookup.ToASCII(hostname)
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}
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