net

var WithBase = funcopt.New(func(params *fetchParams, base string) {
	params.base = base
})

var WithDir = funcopt.NewFailable(func(params *fetchParams, dir string) error {
	if _, err := os.Stat(dir); os.IsNotExist(err) {
		return fmt.Errorf("directory does not exist: %s", dir)
	}
	params.dir = dir
	return nil
})

var WithMaxRedirs = funcopt.New(func(params *fetchParams, maxredirs int) {
	params.maxredirs = maxredirs
})

var WithStderr = funcopt.New(func(params *fetchParams, stderr io.Writer) {
	params.stderr = stderr
})

var WithVerbose = funcopt.New(func(params *fetchParams, verbose bool) {
	params.verbose = verbose
})