package main
import (
"regexp"
"fmt"
)
func main() {
var re = regexp.MustCompile(`(?m)(?:(?:192\.)(?:(?:168\.)(?: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]?)))|(?:(?:10\.)(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){2}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?))|(?:(?:172\.)(?:(?:1[6-9]|2[0-9]|3[0-1])\.)(?:(?: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]?))`)
var str = `10.10.1.1
172.16.11.5
172.31.255.255
172.30.12.11
172.19.12.22
10.1.12.3
10.0.0.0
192.168.1.1
192.168.12.3
11.156.11.1
`
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/