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Matthias Andreas Benkard7b2a3a12021-08-16 10:57:25 +02001<?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
12namespace Symfony\Contracts\Translation;
13
14use Symfony\Component\Translation\Exception\InvalidArgumentException;
15
16/**
17 * A trait to help implement TranslatorInterface and LocaleAwareInterface.
18 *
19 * @author Fabien Potencier <fabien@symfony.com>
20 */
21trait TranslatorTrait
22{
Matthias Andreas Benkard1ba53812022-12-27 17:32:58 +010023 private ?string $locale = null;
Matthias Andreas Benkard7b2a3a12021-08-16 10:57:25 +020024
25 /**
26 * {@inheritdoc}
27 */
28 public function setLocale(string $locale)
29 {
30 $this->locale = $locale;
31 }
32
33 /**
34 * {@inheritdoc}
Matthias Andreas Benkard7b2a3a12021-08-16 10:57:25 +020035 */
Matthias Andreas Benkard1ba53812022-12-27 17:32:58 +010036 public function getLocale(): string
Matthias Andreas Benkard7b2a3a12021-08-16 10:57:25 +020037 {
38 return $this->locale ?: (class_exists(\Locale::class) ? \Locale::getDefault() : 'en');
39 }
40
41 /**
42 * {@inheritdoc}
43 */
44 public function trans(?string $id, array $parameters = [], string $domain = null, string $locale = null): string
45 {
46 if (null === $id || '' === $id) {
47 return '';
48 }
49
50 if (!isset($parameters['%count%']) || !is_numeric($parameters['%count%'])) {
51 return strtr($id, $parameters);
52 }
53
54 $number = (float) $parameters['%count%'];
55 $locale = $locale ?: $this->getLocale();
56
57 $parts = [];
58 if (preg_match('/^\|++$/', $id)) {
59 $parts = explode('|', $id);
60 } elseif (preg_match_all('/(?:\|\||[^\|])++/', $id, $matches)) {
61 $parts = $matches[0];
62 }
63
64 $intervalRegexp = <<<'EOF'
65/^(?P<interval>
66 ({\s*
67 (\-?\d+(\.\d+)?[\s*,\s*\-?\d+(\.\d+)?]*)
68 \s*})
69
70 |
71
72 (?P<left_delimiter>[\[\]])
73 \s*
74 (?P<left>-Inf|\-?\d+(\.\d+)?)
75 \s*,\s*
76 (?P<right>\+?Inf|\-?\d+(\.\d+)?)
77 \s*
78 (?P<right_delimiter>[\[\]])
79)\s*(?P<message>.*?)$/xs
80EOF;
81
82 $standardRules = [];
83 foreach ($parts as $part) {
84 $part = trim(str_replace('||', '|', $part));
85
86 // try to match an explicit rule, then fallback to the standard ones
87 if (preg_match($intervalRegexp, $part, $matches)) {
88 if ($matches[2]) {
89 foreach (explode(',', $matches[3]) as $n) {
90 if ($number == $n) {
91 return strtr($matches['message'], $parameters);
92 }
93 }
94 } else {
95 $leftNumber = '-Inf' === $matches['left'] ? -\INF : (float) $matches['left'];
96 $rightNumber = is_numeric($matches['right']) ? (float) $matches['right'] : \INF;
97
98 if (('[' === $matches['left_delimiter'] ? $number >= $leftNumber : $number > $leftNumber)
99 && (']' === $matches['right_delimiter'] ? $number <= $rightNumber : $number < $rightNumber)
100 ) {
101 return strtr($matches['message'], $parameters);
102 }
103 }
104 } elseif (preg_match('/^\w+\:\s*(.*?)$/', $part, $matches)) {
105 $standardRules[] = $matches[1];
106 } else {
107 $standardRules[] = $part;
108 }
109 }
110
111 $position = $this->getPluralizationRule($number, $locale);
112
113 if (!isset($standardRules[$position])) {
114 // when there's exactly one rule given, and that rule is a standard
115 // rule, use this rule
116 if (1 === \count($parts) && isset($standardRules[0])) {
117 return strtr($standardRules[0], $parameters);
118 }
119
120 $message = sprintf('Unable to choose a translation for "%s" with locale "%s" for value "%d". Double check that this translation has the correct plural options (e.g. "There is one apple|There are %%count%% apples").', $id, $locale, $number);
121
122 if (class_exists(InvalidArgumentException::class)) {
123 throw new InvalidArgumentException($message);
124 }
125
126 throw new \InvalidArgumentException($message);
127 }
128
129 return strtr($standardRules[$position], $parameters);
130 }
131
132 /**
133 * Returns the plural position to use for the given locale and number.
134 *
135 * The plural rules are derived from code of the Zend Framework (2010-09-25),
136 * which is subject to the new BSD license (http://framework.zend.com/license/new-bsd).
137 * Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
138 */
139 private function getPluralizationRule(float $number, string $locale): int
140 {
141 $number = abs($number);
142
Matthias Andreas Benkard1ba53812022-12-27 17:32:58 +0100143 switch ('pt_BR' !== $locale && 'en_US_POSIX' !== $locale && \strlen($locale) > 3 ? substr($locale, 0, strrpos($locale, '_')) : $locale) {
Matthias Andreas Benkard7b2a3a12021-08-16 10:57:25 +0200144 case 'af':
145 case 'bn':
146 case 'bg':
147 case 'ca':
148 case 'da':
149 case 'de':
150 case 'el':
151 case 'en':
Matthias Andreas Benkard1ba53812022-12-27 17:32:58 +0100152 case 'en_US_POSIX':
Matthias Andreas Benkard7b2a3a12021-08-16 10:57:25 +0200153 case 'eo':
154 case 'es':
155 case 'et':
156 case 'eu':
157 case 'fa':
158 case 'fi':
159 case 'fo':
160 case 'fur':
161 case 'fy':
162 case 'gl':
163 case 'gu':
164 case 'ha':
165 case 'he':
166 case 'hu':
167 case 'is':
168 case 'it':
169 case 'ku':
170 case 'lb':
171 case 'ml':
172 case 'mn':
173 case 'mr':
174 case 'nah':
175 case 'nb':
176 case 'ne':
177 case 'nl':
178 case 'nn':
179 case 'no':
180 case 'oc':
181 case 'om':
182 case 'or':
183 case 'pa':
184 case 'pap':
185 case 'ps':
186 case 'pt':
187 case 'so':
188 case 'sq':
189 case 'sv':
190 case 'sw':
191 case 'ta':
192 case 'te':
193 case 'tk':
194 case 'ur':
195 case 'zu':
196 return (1 == $number) ? 0 : 1;
197
198 case 'am':
199 case 'bh':
200 case 'fil':
201 case 'fr':
202 case 'gun':
203 case 'hi':
204 case 'hy':
205 case 'ln':
206 case 'mg':
207 case 'nso':
208 case 'pt_BR':
209 case 'ti':
210 case 'wa':
211 return ($number < 2) ? 0 : 1;
212
213 case 'be':
214 case 'bs':
215 case 'hr':
216 case 'ru':
217 case 'sh':
218 case 'sr':
219 case 'uk':
220 return ((1 == $number % 10) && (11 != $number % 100)) ? 0 : ((($number % 10 >= 2) && ($number % 10 <= 4) && (($number % 100 < 10) || ($number % 100 >= 20))) ? 1 : 2);
221
222 case 'cs':
223 case 'sk':
224 return (1 == $number) ? 0 : ((($number >= 2) && ($number <= 4)) ? 1 : 2);
225
226 case 'ga':
227 return (1 == $number) ? 0 : ((2 == $number) ? 1 : 2);
228
229 case 'lt':
230 return ((1 == $number % 10) && (11 != $number % 100)) ? 0 : ((($number % 10 >= 2) && (($number % 100 < 10) || ($number % 100 >= 20))) ? 1 : 2);
231
232 case 'sl':
233 return (1 == $number % 100) ? 0 : ((2 == $number % 100) ? 1 : (((3 == $number % 100) || (4 == $number % 100)) ? 2 : 3));
234
235 case 'mk':
236 return (1 == $number % 10) ? 0 : 1;
237
238 case 'mt':
239 return (1 == $number) ? 0 : (((0 == $number) || (($number % 100 > 1) && ($number % 100 < 11))) ? 1 : ((($number % 100 > 10) && ($number % 100 < 20)) ? 2 : 3));
240
241 case 'lv':
242 return (0 == $number) ? 0 : (((1 == $number % 10) && (11 != $number % 100)) ? 1 : 2);
243
244 case 'pl':
245 return (1 == $number) ? 0 : ((($number % 10 >= 2) && ($number % 10 <= 4) && (($number % 100 < 12) || ($number % 100 > 14))) ? 1 : 2);
246
247 case 'cy':
248 return (1 == $number) ? 0 : ((2 == $number) ? 1 : (((8 == $number) || (11 == $number)) ? 2 : 3));
249
250 case 'ro':
251 return (1 == $number) ? 0 : (((0 == $number) || (($number % 100 > 0) && ($number % 100 < 20))) ? 1 : 2);
252
253 case 'ar':
254 return (0 == $number) ? 0 : ((1 == $number) ? 1 : ((2 == $number) ? 2 : ((($number % 100 >= 3) && ($number % 100 <= 10)) ? 3 : ((($number % 100 >= 11) && ($number % 100 <= 99)) ? 4 : 5))));
255
256 default:
257 return 0;
258 }
259 }
260}