package client import ( "net/url" "regexp" "github.com/docker/docker/api/types/filters" ) var headerRegexp = regexp.MustCompile(`\ADocker/.+\s\((.+)\)\z`) // getDockerOS returns the operating system based on the server header from the daemon. func getDockerOS(serverHeader string) string { var osType string matches := headerRegexp.FindStringSubmatch(serverHeader) if len(matches) > 0 { osType = matches[1] } return osType } // getFiltersQuery returns a url query with "filters" query term, based on the // filters provided. func getFiltersQuery(f filters.Args) (url.Values, error) { query := url.Values{} if f.Len() > 0 { filterJSON, err := filters.ToJSON(f) if err != nil { return query, err } query.Set("filters", filterJSON) } return query, nil }