go-domain-tools

GOlang package for checking if url contains subdomain, what that subdomain is, what is a top level domain in url etc.

Installation

go get github.com/bobesa/go-domain-util/domainutil

Rebuild the TLD database from publicsuffix.org

# (Re)build Parser
go build -o $GOPATH/bin/domainparser github.com/bobesa/go-domain-util/cmd/domainparser

# Go to domainutil pkg & generate tlds
cd $GOPATH/github.com/bobesa/go-domain-util/domainutil
go generate

Example code

package main

import (
    "fmt"
)

import "github.com/bobesa/go-domain-util/domainutil"

func main(){
    fmt.Println(domainutil.Domain("keep.google.com"))
}

Functions

Get the top level domain from url

func Domain(url string) string

Domain returns top level domain from url string. If no domain is found in provided url, this function returns empty string. If no TLD is found in provided url, this function returns empty string.

Get the domain suffix from url

func DomainSuffix(url string) string

DomainSuffix returns domain suffix from provided url. If no TLD is found in provided url, this function returns empty string.

Check if url has subdomain

func HasSubdomain(domain string) bool

HasSubdomain reports whether domain contains any subdomain.

Get subdomain from url

func Subdomain(url string) string

Subdomain returns subdomain from provided url. If subdomain is not found in provided url, this function returns empty string.