depicter / vendor / symfony / string / Slugger / AsciiSlugger.php

AsciiSlugger.php in Depicter — Popup & Slider Builder 1.3.2, at vendor/symfony/string/Slugger/AsciiSlugger.php

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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
12	namespace Symfony\Component\String\Slugger;
13
14	use Symfony\Component\String\AbstractUnicodeString;
15	use Symfony\Component\String\UnicodeString;
16	use Symfony\Contracts\Translation\LocaleAwareInterface;
17
18	if (!interface_exists(LocaleAwareInterface::class)) {
19	throw new \LogicException('You cannot use the "Symfony\Component\String\Slugger\AsciiSlugger" as the "symfony/translation-contracts" package is not installed. Try running "composer require symfony/translation-contracts".');
20	}
21
22	/**
23	* @author Titouan Galopin <galopintitouan@gmail.com>
24	*/
25	class AsciiSlugger implements SluggerInterface, LocaleAwareInterface
26	{
27	private const LOCALE_TO_TRANSLITERATOR_ID = [
28	'am' => 'Amharic-Latin',
29	'ar' => 'Arabic-Latin',
30	'az' => 'Azerbaijani-Latin',
31	'be' => 'Belarusian-Latin',
32	'bg' => 'Bulgarian-Latin',
33	'bn' => 'Bengali-Latin',
34	'de' => 'de-ASCII',
35	'el' => 'Greek-Latin',
36	'fa' => 'Persian-Latin',
37	'he' => 'Hebrew-Latin',
38	'hy' => 'Armenian-Latin',
39	'ka' => 'Georgian-Latin',
40	'kk' => 'Kazakh-Latin',
41	'ky' => 'Kirghiz-Latin',
42	'ko' => 'Korean-Latin',
43	'mk' => 'Macedonian-Latin',
44	'mn' => 'Mongolian-Latin',
45	'or' => 'Oriya-Latin',
46	'ps' => 'Pashto-Latin',
47	'ru' => 'Russian-Latin',
48	'sr' => 'Serbian-Latin',
49	'sr_Cyrl' => 'Serbian-Latin',
50	'th' => 'Thai-Latin',
51	'tk' => 'Turkmen-Latin',
52	'uk' => 'Ukrainian-Latin',
53	'uz' => 'Uzbek-Latin',
54	'zh' => 'Han-Latin',
55	];
56
57	private $defaultLocale;
58	private $symbolsMap = [
59	'en' => ['@' => 'at', '&' => 'and'],
60	];
61
62	/**
63	* Cache of transliterators per locale.
64	*
65	* @var \Transliterator[]
66	*/
67	private $transliterators = [];
68
69	/**
70	* @param array\|\Closure\|null $symbolsMap
71	*/
72	public function __construct(string $defaultLocale = null, $symbolsMap = null)
73	{
74	if (null !== $symbolsMap && !\is_array($symbolsMap) && !$symbolsMap instanceof \Closure) {
75	throw new \TypeError(sprintf('Argument 2 passed to "%s()" must be array, Closure or null, "%s" given.', __METHOD__, \gettype($symbolsMap)));
76	}
77
78	$this->defaultLocale = $defaultLocale;
79	$this->symbolsMap = $symbolsMap ?? $this->symbolsMap;
80	}
81
82	/**
83	* {@inheritdoc}
84	*/
85	public function setLocale($locale)
86	{
87	$this->defaultLocale = $locale;
88	}
89
90	/**
91	* {@inheritdoc}
92	*/
93	public function getLocale()
94	{
95	return $this->defaultLocale;
96	}
97
98	/**
99	* {@inheritdoc}
100	*/
101	public function slug(string $string, string $separator = '-', string $locale = null): AbstractUnicodeString
102	{
103	$locale = $locale ?? $this->defaultLocale;
104
105	$transliterator = [];
106	if ($locale && ('de' === $locale \|\| 0 === strpos($locale, 'de_'))) {
107	// Use the shortcut for German in UnicodeString::ascii() if possible (faster and no requirement on intl)
108	$transliterator = ['de-ASCII'];
109	} elseif (\function_exists('transliterator_transliterate') && $locale) {
110	$transliterator = (array) $this->createTransliterator($locale);
111	}
112
113	if ($this->symbolsMap instanceof \Closure) {
114	// If the symbols map is passed as a closure, there is no need to fallback to the parent locale
115	// as the closure can just provide substitutions for all locales of interest.
116	$symbolsMap = $this->symbolsMap;
117	array_unshift($transliterator, static function ($s) use ($symbolsMap, $locale) {
118	return $symbolsMap($s, $locale);
119	});
120	}
121
122	$unicodeString = (new UnicodeString($string))->ascii($transliterator);
123
124	if (\is_array($this->symbolsMap)) {
125	$map = null;
126	if (isset($this->symbolsMap[$locale])) {
127	$map = $this->symbolsMap[$locale];
128	} else {
129	$parent = self::getParentLocale($locale);
130	if ($parent && isset($this->symbolsMap[$parent])) {
131	$map = $this->symbolsMap[$parent];
132	}
133	}
134	if ($map) {
135	foreach ($map as $char => $replace) {
136	$unicodeString = $unicodeString->replace($char, ' '.$replace.' ');
137	}
138	}
139	}
140
141	return $unicodeString
142	->replaceMatches('/[^A-Za-z0-9]++/', $separator)
143	->trim($separator)
144	;
145	}
146
147	private function createTransliterator(string $locale): ?\Transliterator
148	{
149	if (\array_key_exists($locale, $this->transliterators)) {
150	return $this->transliterators[$locale];
151	}
152
153	// Exact locale supported, cache and return
154	if ($id = self::LOCALE_TO_TRANSLITERATOR_ID[$locale] ?? null) {
155	return $this->transliterators[$locale] = \Transliterator::create($id.'/BGN') ?? \Transliterator::create($id);
156	}
157
158	// Locale not supported and no parent, fallback to any-latin
159	if (!$parent = self::getParentLocale($locale)) {
160	return $this->transliterators[$locale] = null;
161	}
162
163	// Try to use the parent locale (ie. try "de" for "de_AT") and cache both locales
164	if ($id = self::LOCALE_TO_TRANSLITERATOR_ID[$parent] ?? null) {
165	$transliterator = \Transliterator::create($id.'/BGN') ?? \Transliterator::create($id);
166	}
167
168	return $this->transliterators[$locale] = $this->transliterators[$parent] = $transliterator ?? null;
169	}
170
171	private static function getParentLocale(?string $locale): ?string
172	{
173	if (!$locale) {
174	return null;
175	}
176	if (false === $str = strrchr($locale, '_')) {
177	// no parent locale
178	return null;
179	}
180
181	return substr($locale, 0, -\strlen($str));
182	}
183	}
184