package main
import (
"regexp"
"fmt"
)
func main() {
var re = regexp.MustCompile(`(?i)((?:ht|f)tps?:\/\/(\w+\.\w{2}[\/\w-.]*))`)
var str = `http://matthiasweiss.at/asd/asd
ftp://hallo.welt
https://hallowelt.jpg
http://asdasd.aa/jojoji.jiji
mail@matthiasweiss.at
http://matthiasweiss.at
`
var substitution = "<a href="$1">$1</a>"
fmt.Println(re.ReplaceAllString(str, substitution))
}
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/