package main
import (
"regexp"
"fmt"
)
func main() {
var re = regexp.MustCompile(`(?m)^(?!.{201})(?=(.{0,63}[^\.]@.{1,255}))(?!.*[.?]{2})([!#$%&'*+\-\/=?\^_`{|}~a-zA-Z0-9}]{1,64}(\.[!#$%&'*+\-\/=?\^_`{|}~a-zA-Z0-9]{0,}){0,})@((\[(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)(\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)){3}\])|([a-zA-Z0-9-]{1,63}(\.[a-zA-Z0-9-]{2,63}){1,}))$`)
var str = `foo@bar.baz
1000110001100011000110001100011000110001100011000110001100111111@1000110001100011000110001100011000110001100011000110001100.1231231323123123123123123123123123123123123123ss.asdasdasdasdasdadsadsadadsadas.asdasdasdasdasdadsadsadadsadas.asdasdasdasdasdadsadsadadsadas.asdasdasdasdasdadsadsadadsadas.asdasdasdasdasdadsadsadadsadas.asdasdasdasdasdadsadsadadsadas.asdasdasdasdasdadsadsadadsadas.asdasdasdasdasdadsadsadadsadas.asdasdasdasdasdadsadsadadsadas.asdasdasdasdasdadsadsadadsadas.asdasdasdasdasdadsadsadadsadas.asdasdasdasdasdadsadsadadsadas.asdasdasdasdasdadsadsadadsadas.asdasdasdasdasdadsadsadadsadas.asdasdasdasdasdadsadsadadsadas.asdasdasdasdasdadsadsadadsadas.asdasdasdasdasdadsadsadadsadas.asdasdasdasdasdadsadsadadsadas.asdasdasdasdasdadsadsadadsadas.asdasdasdasdasdadsadsadadsadas.asdasdasdasdasdadsadsadadsadas.asdasdasdasdasdadsadsadadsadas.asdasdasdasdasdadsadsadadsadas.asdasdasdasdasdadsadsadadsadas.asdasdasdasdasdadsadsadadsadas.asdasdasdasdasdadsadsadadsadas.asdasdasdasdasdadsadsadadsadas.asdasdasdasdasdadsadsadadsadas.asdasdasdasdasdadsadsadadsadas.asdasdasdasdasdadsadsadadsadas.adsadasdadsadsadasdasdadsas.asdasdasdasdasdasdasdasd.asdasdasdasdasd.1231231231sadsa.comsss`
for i, match := range re.FindAllString(str, -1) {
fmt.Println(match, "found at index", i)
}
}
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for Golang, please visit: https://golang.org/pkg/regexp/