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utils.go
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utils.go
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package types
import (
"regexp"
"strings"
)
var rnsRegexp = *regexp.MustCompile(`^[\w-]+$`)
func IsValidName(name string) bool {
return rnsRegexp.MatchString(name)
}
func GetTLD(name string) (string, error) {
for _, tld := range SupportedTLDs {
tldSize := len(tld)
if tldSize+1 >= len(name) {
return "", ErrNoTLD
}
checkingName := name[len(name)-tldSize:]
if checkingName == tld {
return tld, nil
}
}
return "", ErrNoTLD
}
func GetSubdomain(name string) (string, string, bool) {
if !strings.Contains(name, ".") {
return "", name, false
}
s := strings.Split(name, ".")
return s[0], s[1], true
}
func removeTLD(name string, tld string) (string, error) {
tldSize := len(tld)
if tldSize+1 >= len(name) {
return "", ErrNoTLD
}
checkingName := name[:len(name)-tldSize-1]
return checkingName, nil
}
func GetNameAndTLD(full string) (string, string, error) {
tld, err := GetTLD(full)
if err != nil {
return "", "", err
}
name, err := removeTLD(full, tld)
if err != nil {
return "", "", err
}
return name, tld, nil
}
func GetCost(tld string) int64 {
cost := TLDCost[tld]
return cost
}