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Color.php

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