"path"
	"runtime"
	"strings"
)

func isGoFile(dir os.FileInfo) bool {
	return !dir.IsDir() &&
		!strings.HasPrefix(dir.Name(), ".") && // ignore .files
		path.Ext(dir.Name()) == ".go"
}

func isPkgFile(dir os.FileInfo) bool {
	return isGoFile(dir) &&
		!strings.HasSuffix(dir.Name(), "_test.go") // ignore test files
}

func pkgName(filename string) string {