func main()

in cmd/benchstat/main.go [144:198]
53 lines of code
13 McCabe index (conditional complexity)

func main() {
	log.SetPrefix("benchstat: ")
	log.SetFlags(0)
	flag.Usage = usage
	flag.Parse()
	deltaTest := deltaTestNames[strings.ToLower(*flagDeltaTest)]
	sortName := *flagSort
	reverse := false
	if strings.HasPrefix(sortName, "-") {
		reverse = true
		sortName = sortName[1:]
	}
	order, ok := sortNames[sortName]
	if flag.NArg() < 1 || deltaTest == nil || !ok {
		flag.Usage()
	}

	c := &benchstat.Collection{
		Alpha:      *flagAlpha,
		AddGeoMean: *flagGeomean,
		DeltaTest:  deltaTest,
	}
	if *flagSplit != "" {
		c.SplitBy = strings.Split(*flagSplit, ",")
	}
	if order != nil {
		if reverse {
			order = benchstat.Reverse(order)
		}
		c.Order = order
	}
	for _, file := range flag.Args() {
		f, err := os.Open(file)
		if err != nil {
			log.Fatal(err)
		}
		if err := c.AddFile(file, f); err != nil {
			log.Fatal(err)
		}
		f.Close()
	}

	tables := c.Tables()
	var buf bytes.Buffer
	if *flagHTML {
		buf.WriteString(htmlHeader)
		benchstat.FormatHTML(&buf, tables)
		buf.WriteString(htmlFooter)
	} else if *flagCSV {
		benchstat.FormatCSV(&buf, tables, *flagNoRange)
	} else {
		benchstat.FormatText(&buf, tables)
	}
	os.Stdout.Write(buf.Bytes())
}