package common

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

func readlist(list string, out chan string) {
	fd, err := os.Open(list)
	if err != nil {
		fatal(err.Error())
	}
	defer fd.Close()

	fs := bufio.NewScanner(fd)
	for fs.Scan() {
		line := strings.TrimSpace(fs.Text())
		if len(line) > 0 {
			if !validcidr(line) {
				fatal(fmt.Sprintf("invalid target range: %s", line))
			}
			lcgcidr(line, out)
		}
	}
}