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| 1 | <?php |
| 2 | /** |
| 3 | * |
| 4 | * This file is part of the phpBB Forum Software package. |
| 5 | * |
| 6 | * @copyright (c) phpBB Limited <https://www.phpbb.com> |
| 7 | * @license GNU General Public License, version 2 (GPL-2.0) |
| 8 | * |
| 9 | * For full copyright and license information, please see |
| 10 | * the docs/CREDITS.txt file. |
| 11 | * |
| 12 | */ |
| 13 | |
| 14 | namespace phpbb\language; |
| 15 | |
| 16 | use phpbb\language\exception\invalid_plural_rule_exception; |
| 17 | |
| 18 | /** |
| 19 | * Wrapper class for loading translations |
| 20 | */ |
| 21 | class language |
| 22 | { |
| 23 | /** |
| 24 | * Global fallback language |
| 25 | * |
| 26 | * ISO code of the language to fallback to when the specified language entries |
| 27 | * cannot be found. |
| 28 | * |
| 29 | * @var string |
| 30 | */ |
| 31 | const FALLBACK_LANGUAGE = 'en'; |
| 32 | |
| 33 | /** |
| 34 | * @var array List of common language files |
| 35 | */ |
| 36 | protected $common_language_files; |
| 37 | |
| 38 | /** |
| 39 | * @var bool |
| 40 | */ |
| 41 | protected $common_language_files_loaded; |
| 42 | |
| 43 | /** |
| 44 | * @var string|null ISO code of the default board language |
| 45 | */ |
| 46 | protected $default_language; |
| 47 | |
| 48 | /** |
| 49 | * @var string|null ISO code of the User's language |
| 50 | */ |
| 51 | protected $user_language; |
| 52 | |
| 53 | /** |
| 54 | * @var array Language fallback array (the order is important) |
| 55 | */ |
| 56 | protected $language_fallback; |
| 57 | |
| 58 | /** |
| 59 | * @var array Array of language variables |
| 60 | */ |
| 61 | protected $lang; |
| 62 | |
| 63 | /** |
| 64 | * @var array Loaded language sets |
| 65 | */ |
| 66 | protected $loaded_language_sets; |
| 67 | |
| 68 | /** |
| 69 | * @var \phpbb\language\language_file_loader Language file loader |
| 70 | */ |
| 71 | protected $loader; |
| 72 | |
| 73 | /** |
| 74 | * Constructor |
| 75 | * |
| 76 | * @param \phpbb\language\language_file_loader $loader Language file loader |
| 77 | * @param array|null $common_modules Array of common language modules to load (optional) |
| 78 | */ |
| 79 | public function __construct(language_file_loader $loader, $common_modules = null) |
| 80 | { |
| 81 | $this->loader = $loader; |
| 82 | |
| 83 | // Set up default information |
| 84 | $this->user_language = null; |
| 85 | $this->default_language = null; |
| 86 | $this->lang = array(); |
| 87 | $this->loaded_language_sets = array( |
| 88 | 'core' => array(), |
| 89 | 'ext' => array(), |
| 90 | ); |
| 91 | |
| 92 | // Common language files |
| 93 | if (is_array($common_modules)) |
| 94 | { |
| 95 | $this->common_language_files = $common_modules; |
| 96 | } |
| 97 | else |
| 98 | { |
| 99 | $this->common_language_files = array( |
| 100 | 'common', |
| 101 | ); |
| 102 | } |
| 103 | |
| 104 | $this->common_language_files_loaded = false; |
| 105 | |
| 106 | $this->language_fallback = array(self::FALLBACK_LANGUAGE); |
| 107 | } |
| 108 | |
| 109 | /** |
| 110 | * Function to set user's language to display. |
| 111 | * |
| 112 | * @param string $user_lang_iso ISO code of the User's language |
| 113 | * @param bool $reload Whether or not to reload language files |
| 114 | */ |
| 115 | public function set_user_language(string $user_lang_iso, $reload = false) |
| 116 | { |
| 117 | $this->user_language = $user_lang_iso; |
| 118 | |
| 119 | $this->set_fallback_array($reload); |
| 120 | } |
| 121 | |
| 122 | /** |
| 123 | * Function to set the board's default language to display. |
| 124 | * |
| 125 | * @param string $default_lang_iso ISO code of the board's default language |
| 126 | * @param bool $reload Whether or not to reload language files |
| 127 | */ |
| 128 | public function set_default_language(string $default_lang_iso, $reload = false) |
| 129 | { |
| 130 | $this->default_language = $default_lang_iso; |
| 131 | |
| 132 | $this->set_fallback_array($reload); |
| 133 | } |
| 134 | |
| 135 | /** |
| 136 | * Returns language array |
| 137 | * |
| 138 | * Note: This function is needed for the BC purposes, until \phpbb\user::lang[] is |
| 139 | * not removed. |
| 140 | * |
| 141 | * @return array Array of loaded language strings |
| 142 | */ |
| 143 | public function get_lang_array() |
| 144 | { |
| 145 | // Load common language files if they not loaded yet |
| 146 | if (!$this->common_language_files_loaded) |
| 147 | { |
| 148 | $this->load_common_language_files(); |
| 149 | } |
| 150 | |
| 151 | return $this->lang; |
| 152 | } |
| 153 | |
| 154 | /** |
| 155 | * Add Language Items |
| 156 | * |
| 157 | * Examples: |
| 158 | * <code> |
| 159 | * $component = array('posting'); |
| 160 | * $component = array('posting', 'viewtopic') |
| 161 | * $component = 'posting' |
| 162 | * </code> |
| 163 | * |
| 164 | * @param string|array $component The name of the language component to load |
| 165 | * @param string|null $extension_name Name of the extension to load component from, or null for core file |
| 166 | */ |
| 167 | public function add_lang($component, $extension_name = null) |
| 168 | { |
| 169 | // Load common language files if they not loaded yet |
| 170 | // This needs to be here to correctly merge language arrays |
| 171 | if (!$this->common_language_files_loaded) |
| 172 | { |
| 173 | $this->load_common_language_files(); |
| 174 | } |
| 175 | |
| 176 | if (!is_array($component)) |
| 177 | { |
| 178 | if (!is_null($extension_name)) |
| 179 | { |
| 180 | $this->load_extension($extension_name, $component); |
| 181 | } |
| 182 | else |
| 183 | { |
| 184 | $this->load_core_file($component); |
| 185 | } |
| 186 | } |
| 187 | else |
| 188 | { |
| 189 | foreach ($component as $lang_file) |
| 190 | { |
| 191 | $this->add_lang($lang_file, $extension_name); |
| 192 | } |
| 193 | } |
| 194 | } |
| 195 | |
| 196 | /** |
| 197 | * @param array|string $key The language key we want to know more about. Can be string or array. |
| 198 | * |
| 199 | * @return bool Returns whether the language key is set. |
| 200 | */ |
| 201 | public function is_set($key) |
| 202 | { |
| 203 | // Load common language files if they not loaded yet |
| 204 | if (!$this->common_language_files_loaded) |
| 205 | { |
| 206 | $this->load_common_language_files(); |
| 207 | } |
| 208 | |
| 209 | if (is_array($key)) |
| 210 | { |
| 211 | $lang = &$this->lang[array_shift($key)]; |
| 212 | |
| 213 | foreach ($key as $_key) |
| 214 | { |
| 215 | $lang = &$lang[$_key]; |
| 216 | } |
| 217 | } |
| 218 | else |
| 219 | { |
| 220 | $lang = &$this->lang[$key]; |
| 221 | } |
| 222 | |
| 223 | return isset($lang); |
| 224 | } |
| 225 | |
| 226 | /** |
| 227 | * Advanced language substitution |
| 228 | * |
| 229 | * Function to mimic sprintf() with the possibility of using phpBB's language system to substitute nullar/singular/plural forms. |
| 230 | * Params are the language key and the parameters to be substituted. |
| 231 | * This function/functionality is inspired by SHS` and Ashe. |
| 232 | * |
| 233 | * Example call: <samp>$user->lang('NUM_POSTS_IN_QUEUE', 1);</samp> |
| 234 | * |
| 235 | * If the first parameter is an array, the elements are used as keys and subkeys to get the language entry: |
| 236 | * Example: <samp>$user->lang(array('datetime', 'AGO'), 1)</samp> uses $user->lang['datetime']['AGO'] as language entry. |
| 237 | * |
| 238 | * @return string Return localized string or the language key if the translation is not available |
| 239 | */ |
| 240 | public function lang() |
| 241 | { |
| 242 | $args = func_get_args(); |
| 243 | $key = array_shift($args); |
| 244 | |
| 245 | return $this->lang_array($key, $args); |
| 246 | } |
| 247 | |
| 248 | /** |
| 249 | * Returns the raw value associated to a language key or the language key no translation is available. |
| 250 | * No parameter substitution is performed, can be a string or an array. |
| 251 | * |
| 252 | * @param string|array $key Language key |
| 253 | * |
| 254 | * @return array|string |
| 255 | */ |
| 256 | public function lang_raw($key) |
| 257 | { |
| 258 | // Load common language files if they not loaded yet |
| 259 | if (!$this->common_language_files_loaded) |
| 260 | { |
| 261 | $this->load_common_language_files(); |
| 262 | } |
| 263 | |
| 264 | if (is_array($key)) |
| 265 | { |
| 266 | $lang = &$this->lang[array_shift($key)]; |
| 267 | |
| 268 | foreach ($key as $_key) |
| 269 | { |
| 270 | $lang = &$lang[$_key]; |
| 271 | } |
| 272 | } |
| 273 | else |
| 274 | { |
| 275 | $lang = &$this->lang[$key]; |
| 276 | } |
| 277 | |
| 278 | // Return if language string does not exist |
| 279 | if (!isset($lang) || (!is_string($lang) && !is_array($lang))) |
| 280 | { |
| 281 | return $key; |
| 282 | } |
| 283 | |
| 284 | return $lang; |
| 285 | } |
| 286 | |
| 287 | /** |
| 288 | * Act like lang() but takes a key and an array of parameters instead of using variadic |
| 289 | * |
| 290 | * @param string|array $key Language key |
| 291 | * @param array $args Parameters |
| 292 | * |
| 293 | * @return string |
| 294 | */ |
| 295 | public function lang_array($key, array $args = []) |
| 296 | { |
| 297 | $lang = $this->lang_raw($key); |
| 298 | |
| 299 | if ($lang === $key) |
| 300 | { |
| 301 | return (string) $key; |
| 302 | } |
| 303 | |
| 304 | // If the language entry is a string, we simply mimic sprintf() behaviour |
| 305 | if (is_string($lang)) |
| 306 | { |
| 307 | if (count($args) === 0) |
| 308 | { |
| 309 | return $lang; |
| 310 | } |
| 311 | |
| 312 | // Replace key with language entry and simply pass along... |
| 313 | return vsprintf($lang, $args); |
| 314 | } |
| 315 | else if (count($lang) == 0) |
| 316 | { |
| 317 | // If the language entry is an empty array, we just return the language key |
| 318 | return (string) $key; |
| 319 | } |
| 320 | |
| 321 | // It is an array... now handle different nullar/singular/plural forms |
| 322 | $key_found = false; |
| 323 | |
| 324 | // We now get the first number passed and will select the key based upon this number |
| 325 | for ($i = 0, $num_args = count($args); $i < $num_args; $i++) |
| 326 | { |
| 327 | if (is_int($args[$i]) || is_float($args[$i])) |
| 328 | { |
| 329 | if ($args[$i] == 0 && isset($lang[0])) |
| 330 | { |
| 331 | // We allow each translation using plural forms to specify a version for the case of 0 things, |
| 332 | // so that "0 users" may be displayed as "No users". |
| 333 | $key_found = 0; |
| 334 | break; |
| 335 | } |
| 336 | else |
| 337 | { |
| 338 | $use_plural_form = $this->get_plural_form($args[$i]); |
| 339 | if (isset($lang[$use_plural_form])) |
| 340 | { |
| 341 | // The key we should use exists, so we use it. |
| 342 | $key_found = $use_plural_form; |
| 343 | } |
| 344 | else |
| 345 | { |
| 346 | // If the key we need to use does not exist, we fall back to the previous one. |
| 347 | $numbers = array_keys($lang); |
| 348 | |
| 349 | foreach ($numbers as $num) |
| 350 | { |
| 351 | if ($num > $use_plural_form) |
| 352 | { |
| 353 | break; |
| 354 | } |
| 355 | |
| 356 | $key_found = $num; |
| 357 | } |
| 358 | } |
| 359 | break; |
| 360 | } |
| 361 | } |
| 362 | } |
| 363 | |
| 364 | // Ok, let's check if the key was found, else use the last entry (because it is mostly the plural form) |
| 365 | if ($key_found === false) |
| 366 | { |
| 367 | $numbers = array_keys($lang); |
| 368 | $key_found = end($numbers); |
| 369 | } |
| 370 | |
| 371 | // Use the language string we determined and pass it to sprintf() |
| 372 | return vsprintf($lang[$key_found], $args); |
| 373 | } |
| 374 | |
| 375 | /** |
| 376 | * Loads common language files |
| 377 | */ |
| 378 | protected function load_common_language_files() |
| 379 | { |
| 380 | if (!$this->common_language_files_loaded) |
| 381 | { |
| 382 | foreach ($this->common_language_files as $lang_file) |
| 383 | { |
| 384 | $this->load_core_file($lang_file); |
| 385 | } |
| 386 | |
| 387 | $this->inject_default_variables(); |
| 388 | |
| 389 | $this->common_language_files_loaded = true; |
| 390 | } |
| 391 | } |
| 392 | |
| 393 | /** |
| 394 | * Inject default values based on composer.json |
| 395 | * |
| 396 | * @return void |
| 397 | */ |
| 398 | protected function inject_default_variables(): void |
| 399 | { |
| 400 | $lang_values = $this->loader->get_composer_lang_values($this->language_fallback); |
| 401 | |
| 402 | $this->lang['DIRECTION'] = $lang_values['direction'] ?? 'ltr'; |
| 403 | $this->lang['USER_LANG'] = $lang_values['user_lang'] ?? 'en-gb'; |
| 404 | $this->lang['PLURAL_RULE'] = $lang_values['plural_rule'] ?? 1; |
| 405 | $this->lang['RECAPTCHA_LANG'] = $lang_values['recaptcha_lang'] ?? 'en-GB'; |
| 406 | $this->lang['TURNSTILE_LANG'] = $lang_values['turnstile_lang'] ?? 'auto'; // default to auto mode |
| 407 | } |
| 408 | |
| 409 | /** |
| 410 | * Determine which plural form we should use. |
| 411 | * |
| 412 | * For some languages this is not as simple as for English. |
| 413 | * |
| 414 | * @param int|float $number The number we want to get the plural case for. Float numbers are floored. |
| 415 | * @param int|bool $force_rule False to use the plural rule of the language package |
| 416 | * or an integer to force a certain plural rule |
| 417 | * |
| 418 | * @return int The plural-case we need to use for the number plural-rule combination |
| 419 | * |
| 420 | * @throws invalid_plural_rule_exception When $force_rule has an invalid value |
| 421 | */ |
| 422 | public function get_plural_form($number, $force_rule = false) |
| 423 | { |
| 424 | $number = (int) $number; |
| 425 | $plural_rule = ($force_rule !== false) ? $force_rule : ((isset($this->lang['PLURAL_RULE'])) ? $this->lang['PLURAL_RULE'] : 1); |
| 426 | |
| 427 | /** |
| 428 | * The following plural rules are based on a list published by the Mozilla Developer Network |
| 429 | * https://developer.mozilla.org/en/Localization_and_Plurals |
| 430 | */ |
| 431 | switch ($plural_rule) |
| 432 | { |
| 433 | case 0: |
| 434 | /** |
| 435 | * Families: Asian (Chinese, Japanese, Korean, Vietnamese), Persian, Turkic/Altaic (Turkish), Thai, Lao |
| 436 | * 1 - everything: 0, 1, 2, ... |
| 437 | */ |
| 438 | return 1; |
| 439 | |
| 440 | case 1: |
| 441 | /** |
| 442 | * Families: Germanic (Danish, Dutch, English, Faroese, Frisian, German, Norwegian, Swedish), Finno-Ugric (Estonian, Finnish, Hungarian), Language isolate (Basque), Latin/Greek (Greek), Semitic (Hebrew), Romanic (Italian, Portuguese, Spanish, Catalan) |
| 443 | * 1 - 1 |
| 444 | * 2 - everything else: 0, 2, 3, ... |
| 445 | */ |
| 446 | return ($number === 1) ? 1 : 2; |
| 447 | |
| 448 | case 2: |
| 449 | /** |
| 450 | * Families: Romanic (French, Brazilian Portuguese) |
| 451 | * 1 - 0, 1 |
| 452 | * 2 - everything else: 2, 3, ... |
| 453 | */ |
| 454 | return (($number === 0) || ($number === 1)) ? 1 : 2; |
| 455 | |
| 456 | case 3: |
| 457 | /** |
| 458 | * Families: Baltic (Latvian) |
| 459 | * 1 - 0 |
| 460 | * 2 - ends in 1, not 11: 1, 21, ... 101, 121, ... |
| 461 | * 3 - everything else: 2, 3, ... 10, 11, 12, ... 20, 22, ... |
| 462 | */ |
| 463 | return ($number === 0) ? 1 : ((($number % 10 === 1) && ($number % 100 != 11)) ? 2 : 3); |
| 464 | |
| 465 | case 4: |
| 466 | /** |
| 467 | * Families: Celtic (Scottish Gaelic) |
| 468 | * 1 - is 1 or 11: 1, 11 |
| 469 | * 2 - is 2 or 12: 2, 12 |
| 470 | * 3 - others between 3 and 19: 3, 4, ... 10, 13, ... 18, 19 |
| 471 | * 4 - everything else: 0, 20, 21, ... |
| 472 | */ |
| 473 | return ($number === 1 || $number === 11) ? 1 : (($number === 2 || $number === 12) ? 2 : (($number >= 3 && $number <= 19) ? 3 : 4)); |
| 474 | |
| 475 | case 5: |
| 476 | /** |
| 477 | * Families: Romanic (Romanian) |
| 478 | * 1 - 1 |
| 479 | * 2 - is 0 or ends in 01-19: 0, 2, 3, ... 19, 101, 102, ... 119, 201, ... |
| 480 | * 3 - everything else: 20, 21, ... |
| 481 | */ |
| 482 | return ($number === 1) ? 1 : ((($number === 0) || (($number % 100 > 0) && ($number % 100 < 20))) ? 2 : 3); |
| 483 | |
| 484 | case 6: |
| 485 | /** |
| 486 | * Families: Baltic (Lithuanian) |
| 487 | * 1 - ends in 1, not 11: 1, 21, 31, ... 101, 121, ... |
| 488 | * 2 - ends in 0 or ends in 10-20: 0, 10, 11, 12, ... 19, 20, 30, 40, ... |
| 489 | * 3 - everything else: 2, 3, ... 8, 9, 22, 23, ... 29, 32, 33, ... |
| 490 | */ |
| 491 | return (($number % 10 === 1) && ($number % 100 != 11)) ? 1 : ((($number % 10 < 2) || (($number % 100 >= 10) && ($number % 100 < 20))) ? 2 : 3); |
| 492 | |
| 493 | case 7: |
| 494 | /** |
| 495 | * Families: Slavic (Croatian, Serbian, Russian, Ukrainian) |
| 496 | * 1 - ends in 1, not 11: 1, 21, 31, ... 101, 121, ... |
| 497 | * 2 - ends in 2-4, not 12-14: 2, 3, 4, 22, 23, 24, 32, ... |
| 498 | * 3 - everything else: 0, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 25, 26, ... |
| 499 | */ |
| 500 | return (($number % 10 === 1) && ($number % 100 != 11)) ? 1 : ((($number % 10 >= 2) && ($number % 10 <= 4) && (($number % 100 < 10) || ($number % 100 >= 20))) ? 2 : 3); |
| 501 | |
| 502 | case 8: |
| 503 | /** |
| 504 | * Families: Slavic (Slovak, Czech) |
| 505 | * 1 - 1 |
| 506 | * 2 - 2, 3, 4 |
| 507 | * 3 - everything else: 0, 5, 6, 7, ... |
| 508 | */ |
| 509 | return ($number === 1) ? 1 : ((($number >= 2) && ($number <= 4)) ? 2 : 3); |
| 510 | |
| 511 | case 9: |
| 512 | /** |
| 513 | * Families: Slavic (Polish) |
| 514 | * 1 - 1 |
| 515 | * 2 - ends in 2-4, not 12-14: 2, 3, 4, 22, 23, 24, 32, ... 104, 122, ... |
| 516 | * 3 - everything else: 0, 5, 6, ... 11, 12, 13, 14, 15, ... 20, 21, 25, ... |
| 517 | */ |
| 518 | return ($number === 1) ? 1 : ((($number % 10 >= 2) && ($number % 10 <= 4) && (($number % 100 < 12) || ($number % 100 > 14))) ? 2 : 3); |
| 519 | |
| 520 | case 10: |
| 521 | /** |
| 522 | * Families: Slavic (Slovenian, Sorbian) |
| 523 | * 1 - ends in 01: 1, 101, 201, ... |
| 524 | * 2 - ends in 02: 2, 102, 202, ... |
| 525 | * 3 - ends in 03-04: 3, 4, 103, 104, 203, 204, ... |
| 526 | * 4 - everything else: 0, 5, 6, 7, 8, 9, 10, 11, ... |
| 527 | */ |
| 528 | return ($number % 100 === 1) ? 1 : (($number % 100 === 2) ? 2 : ((($number % 100 === 3) || ($number % 100 === 4)) ? 3 : 4)); |
| 529 | |
| 530 | case 11: |
| 531 | /** |
| 532 | * Families: Celtic (Irish Gaeilge) |
| 533 | * 1 - 1 |
| 534 | * 2 - 2 |
| 535 | * 3 - is 3-6: 3, 4, 5, 6 |
| 536 | * 4 - is 7-10: 7, 8, 9, 10 |
| 537 | * 5 - everything else: 0, 11, 12, ... |
| 538 | */ |
| 539 | return ($number === 1) ? 1 : (($number === 2) ? 2 : (($number >= 3 && $number <= 6) ? 3 : (($number >= 7 && $number <= 10) ? 4 : 5))); |
| 540 | |
| 541 | case 12: |
| 542 | /** |
| 543 | * Families: Semitic (Arabic) |
| 544 | * 1 - 1 |
| 545 | * 2 - 2 |
| 546 | * 3 - ends in 03-10: 3, 4, ... 10, 103, 104, ... 110, 203, 204, ... |
| 547 | * 4 - ends in 11-99: 11, ... 99, 111, 112, ... |
| 548 | * 5 - everything else: 100, 101, 102, 200, 201, 202, ... |
| 549 | * 6 - 0 |
| 550 | */ |
| 551 | return ($number === 1) ? 1 : (($number === 2) ? 2 : ((($number % 100 >= 3) && ($number % 100 <= 10)) ? 3 : ((($number % 100 >= 11) && ($number % 100 <= 99)) ? 4 : (($number != 0) ? 5 : 6)))); |
| 552 | |
| 553 | case 13: |
| 554 | /** |
| 555 | * Families: Semitic (Maltese) |
| 556 | * 1 - 1 |
| 557 | * 2 - is 0 or ends in 01-10: 0, 2, 3, ... 9, 10, 101, 102, ... |
| 558 | * 3 - ends in 11-19: 11, 12, ... 18, 19, 111, 112, ... |
| 559 | * 4 - everything else: 20, 21, ... |
| 560 | */ |
| 561 | return ($number === 1) ? 1 : ((($number === 0) || (($number % 100 > 1) && ($number % 100 < 11))) ? 2 : ((($number % 100 > 10) && ($number % 100 < 20)) ? 3 : 4)); |
| 562 | |
| 563 | case 14: |
| 564 | /** |
| 565 | * Families: Slavic (Macedonian) |
| 566 | * 1 - ends in 1: 1, 11, 21, ... |
| 567 | * 2 - ends in 2: 2, 12, 22, ... |
| 568 | * 3 - everything else: 0, 3, 4, ... 10, 13, 14, ... 20, 23, ... |
| 569 | */ |
| 570 | return ($number % 10 === 1) ? 1 : (($number % 10 === 2) ? 2 : 3); |
| 571 | |
| 572 | case 15: |
| 573 | /** |
| 574 | * Families: Icelandic |
| 575 | * 1 - ends in 1, not 11: 1, 21, 31, ... 101, 121, 131, ... |
| 576 | * 2 - everything else: 0, 2, 3, ... 10, 11, 12, ... 20, 22, ... |
| 577 | */ |
| 578 | return (($number % 10 === 1) && ($number % 100 != 11)) ? 1 : 2; |
| 579 | |
| 580 | default: |
| 581 | throw new invalid_plural_rule_exception('INVALID_PLURAL_RULE', ['plural_rule' => $plural_rule]); |
| 582 | } |
| 583 | } |
| 584 | |
| 585 | /** |
| 586 | * Returns the ISO code of the used language |
| 587 | * |
| 588 | * @return string The ISO code of the currently used language |
| 589 | */ |
| 590 | public function get_used_language() |
| 591 | { |
| 592 | return $this->language_fallback[0]; |
| 593 | } |
| 594 | |
| 595 | /** |
| 596 | * Returns language fallback data |
| 597 | * |
| 598 | * @param bool $reload Whether or not to reload language files |
| 599 | */ |
| 600 | protected function set_fallback_array($reload = false) |
| 601 | { |
| 602 | $fallback_array = array(); |
| 603 | |
| 604 | if ($this->user_language !== null) |
| 605 | { |
| 606 | $fallback_array[] = $this->user_language; |
| 607 | } |
| 608 | |
| 609 | if ($this->default_language !== null) |
| 610 | { |
| 611 | $fallback_array[] = $this->default_language; |
| 612 | } |
| 613 | |
| 614 | $fallback_array[] = self::FALLBACK_LANGUAGE; |
| 615 | |
| 616 | $this->language_fallback = $fallback_array; |
| 617 | |
| 618 | if ($reload) |
| 619 | { |
| 620 | $this->reload_language_files(); |
| 621 | } |
| 622 | } |
| 623 | |
| 624 | /** |
| 625 | * Load core language file |
| 626 | * |
| 627 | * @param string $component Name of the component to load |
| 628 | */ |
| 629 | protected function load_core_file($component) |
| 630 | { |
| 631 | // Check if the component is already loaded |
| 632 | if (isset($this->loaded_language_sets['core'][$component])) |
| 633 | { |
| 634 | return; |
| 635 | } |
| 636 | |
| 637 | $this->loader->load($component, $this->language_fallback, $this->lang); |
| 638 | $this->loaded_language_sets['core'][$component] = true; |
| 639 | } |
| 640 | |
| 641 | /** |
| 642 | * Load extension language file |
| 643 | * |
| 644 | * @param string $extension_name Name of the extension to load language from |
| 645 | * @param string $component Name of the component to load |
| 646 | */ |
| 647 | protected function load_extension($extension_name, $component) |
| 648 | { |
| 649 | // Check if the component is already loaded |
| 650 | if (isset($this->loaded_language_sets['ext'][$extension_name][$component])) |
| 651 | { |
| 652 | return; |
| 653 | } |
| 654 | |
| 655 | $this->loader->load_extension($extension_name, $component, $this->language_fallback, $this->lang); |
| 656 | $this->loaded_language_sets['ext'][$extension_name][$component] = true; |
| 657 | } |
| 658 | |
| 659 | /** |
| 660 | * Reload language files |
| 661 | */ |
| 662 | protected function reload_language_files() |
| 663 | { |
| 664 | $loaded_files = $this->loaded_language_sets; |
| 665 | $this->loaded_language_sets = array( |
| 666 | 'core' => array(), |
| 667 | 'ext' => array(), |
| 668 | ); |
| 669 | |
| 670 | // Reload core files |
| 671 | foreach ($loaded_files['core'] as $component => $value) |
| 672 | { |
| 673 | $this->load_core_file($component); |
| 674 | } |
| 675 | |
| 676 | // Reload extension files |
| 677 | foreach ($loaded_files['ext'] as $ext_name => $ext_info) |
| 678 | { |
| 679 | foreach ($ext_info as $ext_component => $value) |
| 680 | { |
| 681 | $this->load_extension($ext_name, $ext_component); |
| 682 | } |
| 683 | } |
| 684 | } |
| 685 | } |