/
get_tld.go
72 lines (61 loc) · 1.26 KB
/
get_tld.go
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package main
import (
"fmt"
"io/ioutil"
"net/url"
"os"
"regexp"
"strings"
)
//打开文件
func openfile(filename string) string {
//打开tld文件
data, err := ioutil.ReadFile(filename)
if err != nil {
fmt.Println(err)
os.Exit(1)
}
// fmt.Println(string(data))
return string(data)
}
//从rawurl中提取host
func extract_host(rawurl string) (host string) {
rawurl = strings.ToLower(rawurl)
flag, _ := regexp.MatchString("http://.*", rawurl)
if flag != true {
rawurl = "http://" + rawurl
}
u, err := url.Parse(rawurl)
if err != nil {
panic(err)
}
host = u.Host
return
}
//从rawurl中提取顶级域名服务商
func extract_tld(rawurl string) (tld string) {
filename := "effective_tld_names.dat.txt"
data := openfile(filename)
host := extract_host(rawurl)
host_slice := strings.Split(host, ".")
length := len(host_slice)
for i := 0; i < length; i++ {
expr := ""
for j := i; j < length; j++ {
expr = expr + "." + host_slice[j]
}
reg, _ := regexp.CompilePOSIX("^" + expr[1:] + "$")
fmt.Println(reg.MatchString(data))
if reg.MatchString(data) {
tld = expr[1:]
return
}
}
return
}
func main() {
// println(data)
rawurl := "http://www.hitwh.edu.cn"
fmt.Println(extract_tld(rawurl))
// fmt.Println(get_host(rawurl))
}