Luzilla/dnsbl_exporter

package resolvconf

import (
    "bufio"
    "os"
    "strings"
)

func GetServers(path string) (servers []string, err error) {
    file, err := os.Open(path)
    if err != nil {
        return
    }
    defer file.Close()

    scanner := bufio.NewScanner(file)
    for scanner.Scan() {
        line := scanner.Text()
        if !strings.HasPrefix(line, "nameserver ") {
            continue
        }

        server, ok := strings.CutPrefix(line, "nameserver ")
        if !ok {
            continue
        }

        servers = append(servers, server)
    }

    err = scanner.Err()
    return
}