package main
import (
"regexp"
"fmt"
)
func main() {
var re = regexp.MustCompile(`(?im)^(?<rank>(?:(?:[ \t]|^)[a-z]+)+?)(?!(?:[ \t][a-z.]+){4,}$)[ \t](?<first>[a-z]+)[ \t](?:(?<middle>[a-z.]+)[ \t])?(?<last>[a-z]+)$`)
var str = `High Sheriff John Caldwell. Cook
Deputy Sheriff John A. Gooch
Marshall Robert Forsyth
Constable Darius Quimby
#Exception (when you have First, Last and more than 1 word for the rank):
Deputy Sheriff John Gooch
#In the last example you have to define a list of rank prefixes which mean that there's another word definitely going after it and capture it greedy or with possessive quantifier. E.g.: Deputy,High.`
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/