package main
import (
"regexp"
"fmt"
)
func main() {
var re = regexp.MustCompile(`(?m)(^([1-9][\d]?|1[\d]?[\d]?|2[0-4][\d]|25[0-5])\.)(((0|[1-9][0-9]?|1[\d]?[\d]?|2[0-4][\d]|25[0-5])\.){2})(0|[1-9][\d]?|1[\d]?[\d]?|2[0-4][\d]|25[0-5])$`)
var str = `1.1.1.1
10.10.10.10
255.255.255.255
1.255.1.123
0.1.1.1
1.0.0.0
1.1.1.1
255.256.255.255
127.0.0.1
.127.0.0.1
q.0.0.0
t.t.t.t
44.44.44.44
44.44.44.444
`
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/