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Color.php

128 lines

1	<?php
2
3	/*
4	* This file is part of the Symfony package.
5	*
6	* (c) Fabien Potencier <fabien@symfony.com>
7	*
8	* For the full copyright and license information, please view the LICENSE
9	* file that was distributed with this source code.
10	*/
11	namespace IAWP_SCOPED\Symfony\Component\Console;
12
13	use IAWP_SCOPED\Symfony\Component\Console\Exception\InvalidArgumentException;
14	/**
15	* @author Fabien Potencier <fabien@symfony.com>
16	* @internal
17	*/
18	final class Color
19	{
20	private const COLORS = ['black' => 0, 'red' => 1, 'green' => 2, 'yellow' => 3, 'blue' => 4, 'magenta' => 5, 'cyan' => 6, 'white' => 7, 'default' => 9];
21	private const BRIGHT_COLORS = ['gray' => 0, 'bright-red' => 1, 'bright-green' => 2, 'bright-yellow' => 3, 'bright-blue' => 4, 'bright-magenta' => 5, 'bright-cyan' => 6, 'bright-white' => 7];
22	private const AVAILABLE_OPTIONS = ['bold' => ['set' => 1, 'unset' => 22], 'underscore' => ['set' => 4, 'unset' => 24], 'blink' => ['set' => 5, 'unset' => 25], 'reverse' => ['set' => 7, 'unset' => 27], 'conceal' => ['set' => 8, 'unset' => 28]];
23	private $foreground;
24	private $background;
25	private $options = [];
26	public function __construct(string $foreground = '', string $background = '', array $options = [])
27	{
28	$this->foreground = $this->parseColor($foreground);
29	$this->background = $this->parseColor($background, \true);
30	foreach ($options as $option) {
31	if (!isset(self::AVAILABLE_OPTIONS[$option])) {
32	throw new InvalidArgumentException(\sprintf('Invalid option specified: "%s". Expected one of (%s).', $option, \implode(', ', \array_keys(self::AVAILABLE_OPTIONS))));
33	}
34	$this->options[$option] = self::AVAILABLE_OPTIONS[$option];
35	}
36	}
37	public function apply(string $text) : string
38	{
39	return $this->set() . $text . $this->unset();
40	}
41	public function set() : string
42	{
43	$setCodes = [];
44	if ('' !== $this->foreground) {
45	$setCodes[] = $this->foreground;
46	}
47	if ('' !== $this->background) {
48	$setCodes[] = $this->background;
49	}
50	foreach ($this->options as $option) {
51	$setCodes[] = $option['set'];
52	}
53	if (0 === \count($setCodes)) {
54	return '';
55	}
56	return \sprintf("\x1b[%sm", \implode(';', $setCodes));
57	}
58	public function unset() : string
59	{
60	$unsetCodes = [];
61	if ('' !== $this->foreground) {
62	$unsetCodes[] = 39;
63	}
64	if ('' !== $this->background) {
65	$unsetCodes[] = 49;
66	}
67	foreach ($this->options as $option) {
68	$unsetCodes[] = $option['unset'];
69	}
70	if (0 === \count($unsetCodes)) {
71	return '';
72	}
73	return \sprintf("\x1b[%sm", \implode(';', $unsetCodes));
74	}
75	private function parseColor(string $color, bool $background = \false) : string
76	{
77	if ('' === $color) {
78	return '';
79	}
80	if ('#' === $color[0]) {
81	$color = \substr($color, 1);
82	if (3 === \strlen($color)) {
83	$color = $color[0] . $color[0] . $color[1] . $color[1] . $color[2] . $color[2];
84	}
85	if (6 !== \strlen($color)) {
86	throw new InvalidArgumentException(\sprintf('Invalid "%s" color.', $color));
87	}
88	return ($background ? '4' : '3') . $this->convertHexColorToAnsi(\hexdec($color));
89	}
90	if (isset(self::COLORS[$color])) {
91	return ($background ? '4' : '3') . self::COLORS[$color];
92	}
93	if (isset(self::BRIGHT_COLORS[$color])) {
94	return ($background ? '10' : '9') . self::BRIGHT_COLORS[$color];
95	}
96	throw new InvalidArgumentException(\sprintf('Invalid "%s" color; expected one of (%s).', $color, \implode(', ', \array_merge(\array_keys(self::COLORS), \array_keys(self::BRIGHT_COLORS)))));
97	}
98	private function convertHexColorToAnsi(int $color) : string
99	{
100	$r = $color >> 16 & 255;
101	$g = $color >> 8 & 255;
102	$b = $color & 255;
103	// see https://github.com/termstandard/colors/ for more information about true color support
104	if ('truecolor' !== \getenv('COLORTERM')) {
105	return (string) $this->degradeHexColorToAnsi($r, $g, $b);
106	}
107	return \sprintf('8;2;%d;%d;%d', $r, $g, $b);
108	}
109	private function degradeHexColorToAnsi(int $r, int $g, int $b) : int
110	{
111	if (0 === \round($this->getSaturation($r, $g, $b) / 50)) {
112	return 0;
113	}
114	return \round($b / 255) << 2 \| \round($g / 255) << 1 \| \round($r / 255);
115	}
116	private function getSaturation(int $r, int $g, int $b) : int
117	{
118	$r = $r / 255;
119	$g = $g / 255;
120	$b = $b / 255;
121	$v = \max($r, $g, $b);
122	if (0 === ($diff = $v - \min($r, $g, $b))) {
123	return 0;
124	}
125	return (int) $diff * 100 / $v;
126	}
127	}
128