forked from cerc-io/ipld-eth-server
55 lines
1.2 KiB
Go
55 lines
1.2 KiB
Go
package isdomain
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import (
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"strings"
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)
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//go:generate bash regenerate-tlds.sh
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// IsICANNTLD returns whether the given string is a TLD (Top Level Domain),
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// according to ICANN. Well, really according to the TLDs listed in this
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// package.
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func IsICANNTLD(s string) bool {
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s = strings.ToUpper(s)
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_, found := TLDs[s]
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return found
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}
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// IsExtendedTLD returns whether the given string is a TLD (Top Level Domain),
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// extended with a few other "TLDs": .bit, .onion
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func IsExtendedTLD(s string) bool {
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s = strings.ToUpper(s)
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_, found := ExtendedTLDs[s]
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return found
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}
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// IsTLD returns whether the given string is a TLD (according to ICANN, or
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// in the set of ExtendedTLDs listed in this package.
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func IsTLD(s string) bool {
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return IsICANNTLD(s) || IsExtendedTLD(s)
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}
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// IsDomain returns whether given string is a domain.
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// It first checks the TLD, and then uses a regular expression.
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func IsDomain(s string) bool {
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if strings.HasSuffix(s, ".") {
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s = s[:len(s)-1]
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}
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split := strings.Split(s, ".")
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// Need a TLD and a domain.
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if len(split) < 2 {
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return false
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}
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// Check the TLD
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tld := split[len(split)-1]
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if !IsTLD(tld) {
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return false
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}
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// Check the domain.
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s = strings.ToLower(s)
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return domainRegexp.MatchString(s)
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}
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