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<?php /* * This file is part of the Symfony package. * * (c) Fabien Potencier <fabien@symfony.com> * * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. */ namespace Symfony\Component\Console\Output; use Symfony\Component\Console\Exception\InvalidArgumentException; /** * @author Fabien Potencier <fabien@symfony.com> * @author Julien Boudry <julien@condorcet.vote> */ enum AnsiColorMode { /* * Classical 4-bit Ansi colors, including 8 classical colors and 8 bright color. Output syntax is "ESC[${foreGroundColorcode};${backGroundColorcode}m" * Must be compatible with all terminals and it's the minimal version supported. */ case Ansi4; /* * 8-bit Ansi colors (240 different colors + 16 duplicate color codes, ensuring backward compatibility). * Output syntax is: "ESC[38;5;${foreGroundColorcode};48;5;${backGroundColorcode}m" * Should be compatible with most terminals. */ case Ansi8; /* * 24-bit Ansi colors (RGB). * Output syntax is: "ESC[38;2;${foreGroundColorcodeRed};${foreGroundColorcodeGreen};${foreGroundColorcodeBlue};48;2;${backGroundColorcodeRed};${backGroundColorcodeGreen};${backGroundColorcodeBlue}m" * May be compatible with many modern terminals. */ case Ansi24; /** * Converts an RGB hexadecimal color to the corresponding Ansi code. */ public function convertFromHexToAnsiColorCode(string $hexColor): string { $hexColor = str_replace('#', '', $hexColor); if (3 === \strlen($hexColor)) { $hexColor = $hexColor[0].$hexColor[0].$hexColor[1].$hexColor[1].$hexColor[2].$hexColor[2]; } if (6 !== \strlen($hexColor)) { throw new InvalidArgumentException(\sprintf('Invalid "#%s" color.', $hexColor)); } $color = hexdec($hexColor); $r = ($color >> 16) & 255; $g = ($color >> 8) & 255; $b = $color & 255; return match ($this) { self::Ansi4 => (string) $this->convertFromRGB($r, $g, $b), self::Ansi8 => '8;5;'.$this->convertFromRGB($r, $g, $b), self::Ansi24 => \sprintf('8;2;%d;%d;%d', $r, $g, $b), }; } private function convertFromRGB(int $r, int $g, int $b): int { return match ($this) { self::Ansi4 => $this->degradeHexColorToAnsi4($r, $g, $b), self::Ansi8 => $this->degradeHexColorToAnsi8($r, $g, $b), default => throw new InvalidArgumentException("RGB cannot be converted to {$this->name}."), }; } private function degradeHexColorToAnsi4(int $r, int $g, int $b): int { return round($b / 255) << 2 | (round($g / 255) << 1) | round($r / 255); } /** * Inspired from https://github.com/ajalt/colormath/blob/e464e0da1b014976736cf97250063248fc77b8e7/colormath/src/commonMain/kotlin/com/github/ajalt/colormath/model/Ansi256.kt code (MIT license). */ private function degradeHexColorToAnsi8(int $r, int $g, int $b): int { if ($r === $g && $g === $b) { if ($r < 8) { return 16; } if ($r > 248) { return 231; } return (int) round(($r - 8) / 247 * 24) + 232; } return 16 + (36 * (int) round($r / 255 * 5)) + (6 * (int) round($g / 255 * 5)) + (int) round($b / 255 * 5); } }