wehub-resource-sync
55 lines
1.6 KiB
Go
55 lines
1.6 KiB
Go
package cli
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import (
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"os"
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"golang.org/x/term"
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)
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// colorEnabled is decided once at startup: only colorize when writing to a real
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// terminal and the user hasn't opted out via NO_COLOR (https://no-color.org) or
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// a dumb TERM. Piped/redirected output and CI stay plain so scripts aren't broken.
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var colorEnabled = detectColor()
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func detectColor() bool {
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if os.Getenv("NO_COLOR") != "" {
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return false
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}
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if os.Getenv("TERM") == "dumb" {
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return false
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}
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return term.IsTerminal(int(os.Stdout.Fd()))
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}
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const (
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ansiReset = "\033[0m"
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ansiBold = "\033[1m"
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ansiDim = "\033[2m"
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ansiGreen = "\033[32m"
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ansiRed = "\033[31m"
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ansiYellow = "\033[33m"
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ansiBlue = "\033[38;5;39m"
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ansiCyan = "\033[38;5;44m"
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ansiMagenta = "\033[38;5;176m"
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ansiReverse = "\033[7m"
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// ansiAccent is the dark theme fallback for Reasonix's warm copper brand
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// colour. accent() uses the active CLI theme, but tests and legacy callers can
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// still refer to this concrete escape sequence.
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ansiAccent = "\033[38;5;173m"
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)
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func sgr(code, s string) string {
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if !colorEnabled {
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return s
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}
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return code + s + ansiReset
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}
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func bold(s string) string { return sgr(ansiBold, s) }
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func dim(s string) string { return themeFg(activeCLITheme.faint, s) }
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func green(s string) string { return themeFg(activeCLITheme.success, s) }
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func red(s string) string { return themeFg(activeCLITheme.err, s) }
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func yellow(s string) string { return themeFg(activeCLITheme.warn, s) }
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func accent(s string) string { return themeFg(activeCLITheme.accent, s) }
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func reverse(s string) string { return sgr(ansiReverse, s) }
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