package main
import (
"regexp"
"fmt"
)
func main() {
var re = regexp.MustCompile(`(?m)^(.*?)(?:\s+\S+){4}$`)
var str = `NAME WITH SPACES FIELD1 FIELD2 FIELD3 FIELD4
SECOND NAME WITH SPACES FIELD1 FIELD2 FIELD3 FIELD4
THIRD NAME WITH SPACES FIELD1 FIELD2 FIELD3 FIELD4
FOURTH NAME WITH SPACES FIELD1 FIELD2 FIELD3 FIELD4
FIFTH NAME WITH SOME MORE SPACES FIELD1 FIELD2 FIELD3 FIELD4`
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/