package termext import ( "golang.org/x/term" "os" "regexp" "strconv" "strings" ) // -> partly copied from [ https://github.com/jwalton/go-supportscolor/tree/master ] func SupportsColors() bool { if isatty := term.IsTerminal(int(os.Stdout.Fd())); !isatty { return false } termenv := os.Getenv("TERM") if termenv == "dumb" { return false } if osColorEnabled := enableColor(); !osColorEnabled { return false } if _, ci := os.LookupEnv("CI"); ci { var ciEnvNames = []string{"TRAVIS", "CIRCLECI", "APPVEYOR", "GITLAB_CI", "GITHUB_ACTIONS", "BUILDKITE", "DRONE"} for _, ciEnvName := range ciEnvNames { _, exists := os.LookupEnv(ciEnvName) if exists { return true } } if os.Getenv("CI_NAME") == "codeship" { return true } return false } if teamCityVersion, isTeamCity := os.LookupEnv("TEAMCITY_VERSION"); isTeamCity { versionRegex := regexp.MustCompile(`^(9\.(0*[1-9]\d*)\.|\d{2,}\.)`) if versionRegex.MatchString(teamCityVersion) { return true } return false } if os.Getenv("COLORTERM") == "truecolor" { return true } if termProgram, termProgramPreset := os.LookupEnv("TERM_PROGRAM"); termProgramPreset { switch termProgram { case "iTerm.app": termProgramVersion := strings.Split(os.Getenv("TERM_PROGRAM_VERSION"), ".") version, err := strconv.ParseInt(termProgramVersion[0], 10, 64) if err == nil && version >= 3 { return true } return true case "Apple_Terminal": return true default: // No default } } var term256Regex = regexp.MustCompile("(?i)-256(color)?$") if term256Regex.MatchString(termenv) { return true } var termBasicRegex = regexp.MustCompile("(?i)^screen|^xterm|^vt100|^vt220|^rxvt|color|ansi|cygwin|linux") if termBasicRegex.MatchString(termenv) { return true } if _, colorTerm := os.LookupEnv("COLORTERM"); colorTerm { return true } return false }