package main
import (
"regexp"
"fmt"
)
func main() {
var re = regexp.MustCompile(`(\d+)(?<!10)(?<!127)\.(\d+)(?<!192\.168)(?<!172\.(1[6-9]|2[0-9]|3[0-1]))\.(\d+)\.(\d+)`)
var str = `
No match
172.16.1.1
172.16.0.0
172.16.0.0
172.31.0.1
172.20.22.22
10.255.255.255
192.168.1.1
192.168.12.34
192.168.111.222
127.255.255.255
127.0.4.4
127.0.0.1
127.255.255.255
127.123.123.123
127.1.1.1
127.12.23.56
Match
172.15.2.2
172.33.33.33
192.167.1.1
192.169.1.1
207.168.207.11
207.168.207.22
192.2.199.199
`
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/