f6f9ef260d
Add TTY detection to automatically disable ANSI colors when stdout is piped or redirected. Respects standard conventions: - NO_COLOR environment variable (no-color.org) - CLICOLOR=0 disables color - CLICOLOR_FORCE enables color even in non-TTY Also adds ShouldUseEmoji() helper controlled by BD_NO_EMOJI. Pager already disabled non-TTY in previous work (bd-jdz3). 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
53 lines
1.3 KiB
Go
53 lines
1.3 KiB
Go
// Package ui provides terminal styling and output helpers for beads CLI.
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package ui
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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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// IsTerminal returns true if stdout is connected to a terminal (TTY).
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func IsTerminal() bool {
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return term.IsTerminal(int(os.Stdout.Fd()))
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}
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// ShouldUseColor determines if ANSI color codes should be used.
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// Respects standard conventions:
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// - NO_COLOR: https://no-color.org/ - disables color if set
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// - CLICOLOR=0: disables color
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// - CLICOLOR_FORCE: forces color even in non-TTY
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// - Falls back to TTY detection
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func ShouldUseColor() bool {
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// NO_COLOR standard - any value disables color
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if os.Getenv("NO_COLOR") != "" {
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return false
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}
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// CLICOLOR=0 disables color
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if os.Getenv("CLICOLOR") == "0" {
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return false
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}
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// CLICOLOR_FORCE forces color even in non-TTY
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if os.Getenv("CLICOLOR_FORCE") != "" {
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return true
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}
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// Default: use color only if stdout is a TTY
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return IsTerminal()
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}
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// ShouldUseEmoji determines if emoji decorations should be used.
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// Disabled in non-TTY mode to keep output machine-readable.
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// Can be controlled with BD_NO_EMOJI environment variable.
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func ShouldUseEmoji() bool {
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// Explicit disable
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if os.Getenv("BD_NO_EMOJI") != "" {
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return false
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}
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// Default: use emoji only if stdout is a TTY
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return IsTerminal()
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}
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