package main
import (
"regexp"
"fmt"
)
func main() {
var re = regexp.MustCompile(`(?<address>\d{1,3}(?:\.\d{1,3}){2}\.(?<FromSeg>\d{1,3}))(?:(?:\/|\s+\/\s+)(?<CIDR>\d{1,2})|(?:-|\s+to\s+)(?<ToSeg>\d{1,3}(?![\d\.]))|(?:-|\s*to\s+)(?<ToIP>\d{1,3}(?:\.\d{1,3}){3})|\s+(?<Mask>25\d(?:\.\d{1,3}){3})|\s*)?`)
var str = `56.1.2.3/24
56.1.2.4-7
56.1.2.4-255.0.0.0
56.1.2.4 to 7
56.1.2.4 to 56.1.2.7
56.1.2.3 / 24
56.1.2.3
`
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/