Go TLD Validator

A proper way to work with top level domains by validating towards IANA TLD list. Whenever a new instance of a TLD validator is created the list will be fetched and may after that be updated when desired. The validator is thread safe and can access the valid storage concurrently.

TLD Type

The TLD type makes it easy to convert between unicode and punycode for easier handling and validation. A TLD may be retreived from a domain or host name by using FromDomanName().

Usage

A generated file with all current TLDs from IANA can be used for offline validation. To update the list run go generate ./....

// Offline validation.
tld := FromDomanName("www.github.कॉम")
if !tld.IsValid() {
    fmt.Printf("Invalid TLD: %s\n", tld.AsPunycode())
}

tld = FromString("कॉम")
if !tld.IsValid() {
    fmt.Printf("Invalid TLD: %s\n", tld.LowerString())
}

tld = TLD("xn--11b4c3d")
if !tld.IsValid() {
    fmt.Printf("Invalid TLD: %s\n", tld.AsUnicode())
}

// Quick validation
if IsValid("कॉम") {
    fmt.Printf("TLD is valid")
}

// Online validation.
iana := NewIANA()

if !iana.IsValid(tld) {}
    fmt.Printf("Invalid TLD: %s\n", tld.AsPunycode())
}