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