package main
import (
"regexp"
"fmt"
)
func main() {
var re = regexp.MustCompile(`(?m)(?<=source:\s)\S+(?:\s+\S+){3,7}\b`)
var str = `source: from animal origin as Vitamin A / all-trans-Retinol: Fish in general, liver and dairy products;
source: Eggs, liver, certain fish species such as sardines, certain mushroom species such as shiitake
source: Leafy green vegetables such as spinach; egg yolks; liver
`
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/