bc490f5a21
Implement the NO_COLOR standard (https://no-color.org/) for CLI output. When NO_COLOR is set (to any value), ANSI color codes are disabled. Changes: - Add init() to check NO_COLOR and TERM=dumb environment variables - Add ColorEnabled() to query current color state - Add SetColorEnabled() to programmatically enable/disable colors - Modify AnsiStyle.Render() to return plain text when colors disabled - Update UseASCII() to also disable colors (consistent with ASCII mode) - Add comprehensive tests for color enable/disable functionality Usage: NO_COLOR=1 core dev status # Runs without color output TERM=dumb core dev status # Also disables colors Closes #87 Co-authored-by: Claude <noreply@anthropic.com>
92 lines
1.7 KiB
Go
92 lines
1.7 KiB
Go
package cli
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import (
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"bytes"
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"unicode"
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)
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// GlyphTheme defines which symbols to use.
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type GlyphTheme int
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const (
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// ThemeUnicode uses standard Unicode symbols.
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ThemeUnicode GlyphTheme = iota
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// ThemeEmoji uses Emoji symbols.
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ThemeEmoji
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// ThemeASCII uses ASCII fallback symbols.
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ThemeASCII
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)
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var currentTheme = ThemeUnicode
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// UseUnicode switches the glyph theme to Unicode.
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func UseUnicode() { currentTheme = ThemeUnicode }
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// UseEmoji switches the glyph theme to Emoji.
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func UseEmoji() { currentTheme = ThemeEmoji }
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// UseASCII switches the glyph theme to ASCII and disables colors.
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func UseASCII() {
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currentTheme = ThemeASCII
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SetColorEnabled(false)
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}
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func glyphMap() map[string]string {
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switch currentTheme {
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case ThemeEmoji:
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return glyphMapEmoji
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case ThemeASCII:
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return glyphMapASCII
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default:
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return glyphMapUnicode
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}
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}
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// Glyph converts a shortcode (e.g. ":check:") to its symbol based on the current theme.
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func Glyph(code string) string {
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if sym, ok := glyphMap()[code]; ok {
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return sym
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}
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return code
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}
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func compileGlyphs(x string) string {
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if x == "" {
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return ""
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}
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input := bytes.NewBufferString(x)
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output := bytes.NewBufferString("")
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for {
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r, _, err := input.ReadRune()
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if err != nil {
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break
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}
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if r == ':' {
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output.WriteString(replaceGlyph(input))
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} else {
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output.WriteRune(r)
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}
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}
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return output.String()
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}
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func replaceGlyph(input *bytes.Buffer) string {
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code := bytes.NewBufferString(":")
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for {
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r, _, err := input.ReadRune()
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if err != nil {
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return code.String()
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}
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if r == ':' && code.Len() == 1 {
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return code.String() + replaceGlyph(input)
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}
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code.WriteRune(r)
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if unicode.IsSpace(r) {
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return code.String()
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}
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if r == ':' {
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return Glyph(code.String())
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}
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}
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}
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