chore: vendor

vendor/github.com/muesli/termenv/termenv.go

@@ -0,0 +1,114 @@
+package termenv
+
+import (
+	"errors"
+
+	"github.com/mattn/go-isatty"
+)
+
+var (
+	// ErrStatusReport gets returned when the terminal can't be queried.
+	ErrStatusReport = errors.New("unable to retrieve status report")
+)
+
+const (
+	// Escape character
+	ESC = '\x1b'
+	// Bell
+	BEL = '\a'
+	// Control Sequence Introducer
+	CSI = string(ESC) + "["
+	// Operating System Command
+	OSC = string(ESC) + "]"
+	// String Terminator
+	ST = string(ESC) + `\`
+)
+
+func (o *Output) isTTY() bool {
+	if o.assumeTTY || o.unsafe {
+		return true
+	}
+	if len(o.environ.Getenv("CI")) > 0 {
+		return false
+	}
+	if o.TTY() == nil {
+		return false
+	}
+
+	return isatty.IsTerminal(o.TTY().Fd())
+}
+
+// ColorProfile returns the supported color profile:
+// Ascii, ANSI, ANSI256, or TrueColor.
+func ColorProfile() Profile {
+	return output.ColorProfile()
+}
+
+// ForegroundColor returns the terminal's default foreground color.
+func ForegroundColor() Color {
+	return output.ForegroundColor()
+}
+
+// BackgroundColor returns the terminal's default background color.
+func BackgroundColor() Color {
+	return output.BackgroundColor()
+}
+
+// HasDarkBackground returns whether terminal uses a dark-ish background.
+func HasDarkBackground() bool {
+	return output.HasDarkBackground()
+}
+
+// EnvNoColor returns true if the environment variables explicitly disable color output
+// by setting NO_COLOR (https://no-color.org/)
+// or CLICOLOR/CLICOLOR_FORCE (https://bixense.com/clicolors/)
+// If NO_COLOR is set, this will return true, ignoring CLICOLOR/CLICOLOR_FORCE
+// If CLICOLOR=="0", it will be true only if CLICOLOR_FORCE is also "0" or is unset.
+func (o *Output) EnvNoColor() bool {
+	return o.environ.Getenv("NO_COLOR") != "" || (o.environ.Getenv("CLICOLOR") == "0" && !o.cliColorForced())
+}
+
+// EnvNoColor returns true if the environment variables explicitly disable color output
+// by setting NO_COLOR (https://no-color.org/)
+// or CLICOLOR/CLICOLOR_FORCE (https://bixense.com/clicolors/)
+// If NO_COLOR is set, this will return true, ignoring CLICOLOR/CLICOLOR_FORCE
+// If CLICOLOR=="0", it will be true only if CLICOLOR_FORCE is also "0" or is unset.
+func EnvNoColor() bool {
+	return output.EnvNoColor()
+}
+
+// EnvColorProfile returns the color profile based on environment variables set
+// Supports NO_COLOR (https://no-color.org/)
+// and CLICOLOR/CLICOLOR_FORCE (https://bixense.com/clicolors/)
+// If none of these environment variables are set, this behaves the same as ColorProfile()
+// It will return the Ascii color profile if EnvNoColor() returns true
+// If the terminal does not support any colors, but CLICOLOR_FORCE is set and not "0"
+// then the ANSI color profile will be returned.
+func EnvColorProfile() Profile {
+	return output.EnvColorProfile()
+}
+
+// EnvColorProfile returns the color profile based on environment variables set
+// Supports NO_COLOR (https://no-color.org/)
+// and CLICOLOR/CLICOLOR_FORCE (https://bixense.com/clicolors/)
+// If none of these environment variables are set, this behaves the same as ColorProfile()
+// It will return the Ascii color profile if EnvNoColor() returns true
+// If the terminal does not support any colors, but CLICOLOR_FORCE is set and not "0"
+// then the ANSI color profile will be returned.
+func (o *Output) EnvColorProfile() Profile {
+	if o.EnvNoColor() {
+		return Ascii
+	}
+	p := o.ColorProfile()
+	if o.cliColorForced() && p == Ascii {
+		return ANSI
+	}
+	return p
+}
+
+func (o *Output) cliColorForced() bool {
+	if forced := o.environ.Getenv("CLICOLOR_FORCE"); forced != "" {
+		return forced != "0"
+	}
+	return false
+}