1<?php 2/** 3 * webtrees: online genealogy 4 * Copyright (C) 2018 webtrees development team 5 * This program is free software: you can redistribute it and/or modify 6 * it under the terms of the GNU General Public License as published by 7 * the Free Software Foundation, either version 3 of the License, or 8 * (at your option) any later version. 9 * This program is distributed in the hope that it will be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 * GNU General Public License for more details. 13 * You should have received a copy of the GNU General Public License 14 * along with this program. If not, see <http://www.gnu.org/licenses/>. 15 */ 16declare(strict_types=1); 17 18namespace Fisharebest\Webtrees; 19 20use Collator; 21use Exception; 22use Fisharebest\Localization\Locale; 23use Fisharebest\Localization\Locale\LocaleEnUs; 24use Fisharebest\Localization\Locale\LocaleInterface; 25use Fisharebest\Localization\Translation; 26use Fisharebest\Localization\Translator; 27use Fisharebest\Webtrees\Functions\FunctionsEdit; 28 29/** 30 * Internationalization (i18n) and localization (l10n). 31 */ 32class I18N 33{ 34 /** @var LocaleInterface The current locale (e.g. LocaleEnGb) */ 35 private static $locale; 36 37 /** @var Translator An object that performs translation */ 38 private static $translator; 39 40 /** @var Collator From the php-intl library */ 41 private static $collator; 42 43 // Digits are always rendered LTR, even in RTL text. 44 const DIGITS = '0123456789٠١٢٣٤٥٦٧٨٩۰۱۲۳۴۵۶۷۸۹'; 45 46 // These locales need special handling for the dotless letter I. 47 const DOTLESS_I_LOCALES = [ 48 'az', 49 'tr', 50 ]; 51 const DOTLESS_I_TOLOWER = [ 52 'I' => 'ı', 53 'İ' => 'i', 54 ]; 55 const DOTLESS_I_TOUPPER = [ 56 'ı' => 'I', 57 'i' => 'İ', 58 ]; 59 60 // The ranges of characters used by each script. 61 const SCRIPT_CHARACTER_RANGES = [ 62 [ 63 'Latn', 64 0x0041, 65 0x005A, 66 ], 67 [ 68 'Latn', 69 0x0061, 70 0x007A, 71 ], 72 [ 73 'Latn', 74 0x0100, 75 0x02AF, 76 ], 77 [ 78 'Grek', 79 0x0370, 80 0x03FF, 81 ], 82 [ 83 'Cyrl', 84 0x0400, 85 0x052F, 86 ], 87 [ 88 'Hebr', 89 0x0590, 90 0x05FF, 91 ], 92 [ 93 'Arab', 94 0x0600, 95 0x06FF, 96 ], 97 [ 98 'Arab', 99 0x0750, 100 0x077F, 101 ], 102 [ 103 'Arab', 104 0x08A0, 105 0x08FF, 106 ], 107 [ 108 'Deva', 109 0x0900, 110 0x097F, 111 ], 112 [ 113 'Taml', 114 0x0B80, 115 0x0BFF, 116 ], 117 [ 118 'Sinh', 119 0x0D80, 120 0x0DFF, 121 ], 122 [ 123 'Thai', 124 0x0E00, 125 0x0E7F, 126 ], 127 [ 128 'Geor', 129 0x10A0, 130 0x10FF, 131 ], 132 [ 133 'Grek', 134 0x1F00, 135 0x1FFF, 136 ], 137 [ 138 'Deva', 139 0xA8E0, 140 0xA8FF, 141 ], 142 [ 143 'Hans', 144 0x3000, 145 0x303F, 146 ], 147 // Mixed CJK, not just Hans 148 [ 149 'Hans', 150 0x3400, 151 0xFAFF, 152 ], 153 // Mixed CJK, not just Hans 154 [ 155 'Hans', 156 0x20000, 157 0x2FA1F, 158 ], 159 // Mixed CJK, not just Hans 160 ]; 161 162 // Characters that are displayed in mirror form in RTL text. 163 const MIRROR_CHARACTERS = [ 164 '(' => ')', 165 ')' => '(', 166 '[' => ']', 167 ']' => '[', 168 '{' => '}', 169 '}' => '{', 170 '<' => '>', 171 '>' => '<', 172 '‹ ' => '›', 173 '› ' => '‹', 174 '«' => '»', 175 '»' => '«', 176 '﴾ ' => '﴿', 177 '﴿ ' => '﴾', 178 '“ ' => '”', 179 '” ' => '“', 180 '‘ ' => '’', 181 '’ ' => '‘', 182 ]; 183 184 // Default list of locales to show in the menu. 185 const DEFAULT_LOCALES = [ 186 'ar', 187 'bg', 188 'bs', 189 'ca', 190 'cs', 191 'da', 192 'de', 193 'el', 194 'en-GB', 195 'en-US', 196 'es', 197 'et', 198 'fi', 199 'fr', 200 'he', 201 'hr', 202 'hu', 203 'is', 204 'it', 205 'ka', 206 'kk', 207 'lt', 208 'mr', 209 'nb', 210 'nl', 211 'nn', 212 'pl', 213 'pt', 214 'ru', 215 'sk', 216 'sv', 217 'tr', 218 'uk', 219 'vi', 220 'zh-Hans', 221 ]; 222 223 /** @var string Punctuation used to separate list items, typically a comma */ 224 public static $list_separator; 225 226 /** 227 * The prefered locales for this site, or a default list if no preference. 228 * 229 * @return LocaleInterface[] 230 */ 231 public static function activeLocales(): array 232 { 233 $code_list = Site::getPreference('LANGUAGES'); 234 235 if ($code_list === '') { 236 $codes = self::DEFAULT_LOCALES; 237 } else { 238 $codes = explode(',', $code_list); 239 } 240 241 $locales = []; 242 foreach ($codes as $code) { 243 if (file_exists(WT_ROOT . 'language/' . $code . '.mo')) { 244 try { 245 $locales[] = Locale::create($code); 246 } catch (\Exception $ex) { 247 DebugBar::addThrowable($ex); 248 249 // No such locale exists? 250 } 251 } 252 } 253 usort($locales, '\Fisharebest\Localization\Locale::compare'); 254 255 return $locales; 256 } 257 258 /** 259 * Which MySQL collation should be used for this locale? 260 * 261 * @return string 262 */ 263 public static function collation() 264 { 265 $collation = self::$locale->collation(); 266 switch ($collation) { 267 case 'croatian_ci': 268 case 'german2_ci': 269 case 'vietnamese_ci': 270 // Only available in MySQL 5.6 271 return 'utf8_unicode_ci'; 272 default: 273 return 'utf8_' . $collation; 274 } 275 } 276 277 /** 278 * What format is used to display dates in the current locale? 279 * 280 * @return string 281 */ 282 public static function dateFormat(): string 283 { 284 /* I18N: This is the format string for full dates. See http://php.net/date for codes */ 285 return self::$translator->translate('%j %F %Y'); 286 } 287 288 /** 289 * Generate consistent I18N for datatables.js 290 * 291 * @param int[] $lengths An optional array of page lengths 292 * 293 * @return string 294 */ 295 public static function datatablesI18N(array $lengths = [ 296 10, 297 20, 298 30, 299 50, 300 100, 301 -1, 302 ]): string 303 { 304 $length_options = Bootstrap4::select(FunctionsEdit::numericOptions($lengths), '10'); 305 306 return 307 '"formatNumber": function(n) { return String(n).replace(/[0-9]/g, function(w) { return ("' . self::$locale->digits('0123456789') . '")[+w]; }); },' . 308 '"language": {' . 309 ' "paginate": {' . 310 ' "first": "' . self::translate('first') . '",' . 311 ' "last": "' . self::translate('last') . '",' . 312 ' "next": "' . self::translate('next') . '",' . 313 ' "previous": "' . self::translate('previous') . '"' . 314 ' },' . 315 ' "emptyTable": "' . self::translate('No records to display') . '",' . 316 ' "info": "' . /* I18N: %s are placeholders for numbers */ 317 self::translate('Showing %1$s to %2$s of %3$s', '_START_', '_END_', '_TOTAL_') . '",' . 318 ' "infoEmpty": "' . self::translate('Showing %1$s to %2$s of %3$s', self::$locale->digits('0'), self::$locale->digits('0'), self::$locale->digits('0')) . '",' . 319 ' "infoFiltered": "' . /* I18N: %s is a placeholder for a number */ 320 self::translate('(filtered from %s total entries)', '_MAX_') . '",' . 321 ' "lengthMenu": "' . /* I18N: %s is a number of records per page */ 322 self::translate('Display %s', addslashes($length_options)) . '",' . 323 ' "loadingRecords": "' . self::translate('Loading…') . '",' . 324 ' "processing": "' . self::translate('Loading…') . '",' . 325 ' "search": "' . self::translate('Filter') . '",' . 326 ' "zeroRecords": "' . self::translate('No records to display') . '"' . 327 '}'; 328 } 329 330 /** 331 * Convert the digits 0-9 into the local script 332 * 333 * Used for years, etc., where we do not want thousands-separators, decimals, etc. 334 * 335 * @param string|int $n 336 * 337 * @return string 338 */ 339 public static function digits($n): string 340 { 341 return self::$locale->digits((string) $n); 342 } 343 344 /** 345 * What is the direction of the current locale 346 * 347 * @return string "ltr" or "rtl" 348 */ 349 public static function direction(): string 350 { 351 return self::$locale->direction(); 352 } 353 354 /** 355 * What is the first day of the week. 356 * 357 * @return int Sunday=0, Monday=1, etc. 358 */ 359 public static function firstDay(): int 360 { 361 return self::$locale->territory()->firstDay(); 362 } 363 364 /** 365 * Convert a GEDCOM age string into translated_text 366 * 367 * NB: The import function will have normalised this, so we don't need to worry about badly formatted strings 368 * NOTE: this function is not yet complete - eventually it will replace FunctionsDate::get_age_at_event() 369 * 370 * @param string $string 371 * 372 * @return string 373 */ 374 public static function gedcomAge(string $string): string 375 { 376 switch ($string) { 377 case 'STILLBORN': 378 // I18N: Description of an individual’s age at an event. For example, Died 14 Jan 1900 (stillborn) 379 return self::translate('(stillborn)'); 380 case 'INFANT': 381 // I18N: Description of an individual’s age at an event. For example, Died 14 Jan 1900 (in infancy) 382 return self::translate('(in infancy)'); 383 case 'CHILD': 384 // I18N: Description of an individual’s age at an event. For example, Died 14 Jan 1900 (in childhood) 385 return self::translate('(in childhood)'); 386 } 387 388 $age = []; 389 390 if (preg_match('/(\d+)y/', $string, $match)) { 391 $years = (int) $match[1]; 392 // I18N: Part of an age string. e.g. 5 years, 4 months and 3 days 393 $age[] = self::plural('%s year', '%s years', $years, self::number($years)); 394 } else { 395 $years = -1; 396 } 397 398 if (preg_match('/(\d+)m/', $string, $match)) { 399 $months = (int) $match[1]; 400 // I18N: Part of an age string. e.g. 5 years, 4 months and 3 days 401 $age[] = self::plural('%s month', '%s months', $months, self::number($months)); 402 } 403 404 if (preg_match('/(\d+)w/', $string, $match)) { 405 $weeks = (int) $match[1]; 406 // I18N: Part of an age string. e.g. 7 weeks and 3 days 407 $age[] = self::plural('%s week', '%s weeks', $weeks, self::number($weeks)); 408 } 409 410 if (preg_match('/(\d+)d/', $string, $match)) { 411 $days = (int) $match[1]; 412 // I18N: Part of an age string. e.g. 5 years, 4 months and 3 days 413 $age[] = self::plural('%s day', '%s days', $days, self::number($days)); 414 } 415 416 // If an age is just a number of years, only show the number 417 if (count($age) === 1 && $years >= 0) { 418 $age = [self::number($years)]; 419 } 420 421 $age_string = implode(self::$list_separator, $age); 422 423 // No valid d/m/y values? Show the original string. 424 if ($age_string === '') { 425 $age_string = $string; 426 } 427 428 if (!substr_compare($string, '<', 0, 1)) { 429 // I18N: Description of an individual’s age at an event. For example, Died 14 Jan 1900 (aged less than 21 years) 430 return self::translate('(aged less than %s)', $age); 431 } 432 433 if (!substr_compare($string, '>', 0, 1)) { 434 // I18N: Description of an individual’s age at an event. For example, Died 14 Jan 1900 (aged more than 21 years) 435 return self::translate('(aged more than %s)', $age); 436 } 437 438 // I18N: Description of an individual’s age at an event. For example, Died 14 Jan 1900 (aged 43 years) 439 return self::translate('(aged %s)', $age); 440 } 441 442 /** 443 * Generate i18n markup for the <html> tag, e.g. lang="ar" dir="rtl" 444 * 445 * @return string 446 */ 447 public static function htmlAttributes(): string 448 { 449 return self::$locale->htmlAttributes(); 450 } 451 452 /** 453 * Initialise the translation adapter with a locale setting. 454 * 455 * @param string $code Use this locale/language code, or choose one automatically 456 * @param Tree|null $tree 457 * 458 * @return string $string 459 */ 460 public static function init(string $code = '', Tree $tree = null): string 461 { 462 mb_internal_encoding('UTF-8'); 463 464 if ($code !== '') { 465 // Create the specified locale 466 self::$locale = Locale::create($code); 467 } elseif (Session::has('locale') && file_exists(WT_ROOT . 'language/' . Session::get('locale') . '.mo')) { 468 // Select a previously used locale 469 self::$locale = Locale::create(Session::get('locale')); 470 } else { 471 if ($tree instanceof Tree) { 472 $default_locale = Locale::create($tree->getPreference('LANGUAGE', 'en-US')); 473 } else { 474 $default_locale = new LocaleEnUs(); 475 } 476 477 // Negotiate with the browser. 478 // Search engines don't negotiate. They get the default locale of the tree. 479 self::$locale = Locale::httpAcceptLanguage($_SERVER, self::installedLocales(), $default_locale); 480 } 481 482 $cache_dir = WT_DATA_DIR . 'cache/'; 483 $cache_file = $cache_dir . 'language-' . self::$locale->languageTag() . '-cache.php'; 484 if (file_exists($cache_file)) { 485 $filemtime = filemtime($cache_file); 486 } else { 487 $filemtime = 0; 488 } 489 490 // Load the translation file(s) 491 // Note that glob() returns false instead of an empty array when open_basedir_restriction 492 // is in force and no files are found. See PHP bug #47358. 493 if (defined('GLOB_BRACE')) { 494 $translation_files = array_merge( 495 [WT_ROOT . 'language/' . self::$locale->languageTag() . '.mo'], 496 glob(WT_MODULES_DIR . '*/language/' . self::$locale->languageTag() . '.{csv,php,mo}', GLOB_BRACE) ?: [], 497 glob(WT_DATA_DIR . 'language/' . self::$locale->languageTag() . '.{csv,php,mo}', GLOB_BRACE) ?: [] 498 ); 499 } else { 500 // Some servers do not have GLOB_BRACE - see http://php.net/manual/en/function.glob.php 501 $translation_files = array_merge( 502 [WT_ROOT . 'language/' . self::$locale->languageTag() . '.mo'], 503 glob(WT_MODULES_DIR . '*/language/' . self::$locale->languageTag() . '.csv') ?: [], 504 glob(WT_MODULES_DIR . '*/language/' . self::$locale->languageTag() . '.php') ?: [], 505 glob(WT_MODULES_DIR . '*/language/' . self::$locale->languageTag() . '.mo') ?: [], 506 glob(WT_DATA_DIR . 'language/' . self::$locale->languageTag() . '.csv') ?: [], 507 glob(WT_DATA_DIR . 'language/' . self::$locale->languageTag() . '.php') ?: [], 508 glob(WT_DATA_DIR . 'language/' . self::$locale->languageTag() . '.mo') ?: [] 509 ); 510 } 511 // Rebuild files after one hour 512 $rebuild_cache = time() > $filemtime + 3600; 513 // Rebuild files if any translation file has been updated 514 foreach ($translation_files as $translation_file) { 515 if (filemtime($translation_file) > $filemtime) { 516 $rebuild_cache = true; 517 break; 518 } 519 } 520 521 if ($rebuild_cache) { 522 $translations = []; 523 foreach ($translation_files as $translation_file) { 524 $translation = new Translation($translation_file); 525 $translations = array_merge($translations, $translation->asArray()); 526 } 527 try { 528 File::mkdir($cache_dir); 529 file_put_contents($cache_file, '<?php return ' . var_export($translations, true) . ';'); 530 } catch (Exception $ex) { 531 DebugBar::addThrowable($ex); 532 533 // During setup, we may not have been able to create it. 534 } 535 } else { 536 $translations = include $cache_file; 537 } 538 539 // Create a translator 540 self::$translator = new Translator($translations, self::$locale->pluralRule()); 541 542 /* I18N: This punctuation is used to separate lists of items */ 543 self::$list_separator = self::translate(', '); 544 545 // Create a collator 546 try { 547 // PHP 5.6 cannot catch errors, so test first 548 if (class_exists('Collator')) { 549 self::$collator = new Collator(self::$locale->code()); 550 // Ignore upper/lower case differences 551 self::$collator->setStrength(Collator::SECONDARY); 552 } 553 } catch (Exception $ex) { 554 DebugBar::addThrowable($ex); 555 556 // PHP-INTL is not installed? We'll use a fallback later. 557 } 558 559 return self::$locale->languageTag(); 560 } 561 562 /** 563 * All locales for which a translation file exists. 564 * 565 * @return LocaleInterface[] 566 */ 567 public static function installedLocales(): array 568 { 569 $locales = []; 570 foreach (glob(WT_ROOT . 'language/*.mo') as $file) { 571 try { 572 $locales[] = Locale::create(basename($file, '.mo')); 573 } catch (\Exception $ex) { 574 DebugBar::addThrowable($ex); 575 576 // Not a recognised locale 577 } 578 } 579 usort($locales, '\Fisharebest\Localization\Locale::compare'); 580 581 return $locales; 582 } 583 584 /** 585 * Return the endonym for a given language - as per http://cldr.unicode.org/ 586 * 587 * @param string $locale 588 * 589 * @return string 590 */ 591 public static function languageName(string $locale): string 592 { 593 return Locale::create($locale)->endonym(); 594 } 595 596 /** 597 * Return the script used by a given language 598 * 599 * @param string $locale 600 * 601 * @return string 602 */ 603 public static function languageScript(string $locale): string 604 { 605 return Locale::create($locale)->script()->code(); 606 } 607 608 /** 609 * Translate a number into the local representation. 610 * 611 * e.g. 12345.67 becomes 612 * en: 12,345.67 613 * fr: 12 345,67 614 * de: 12.345,67 615 * 616 * @param float $n 617 * @param int $precision 618 * 619 * @return string 620 */ 621 public static function number(float $n, int $precision = 0): string 622 { 623 return self::$locale->number(round($n, $precision)); 624 } 625 626 /** 627 * Translate a fraction into a percentage. 628 * 629 * e.g. 0.123 becomes 630 * en: 12.3% 631 * fr: 12,3 % 632 * de: 12,3% 633 * 634 * @param float $n 635 * @param int $precision 636 * 637 * @return string 638 */ 639 public static function percentage(float $n, int $precision = 0): string 640 { 641 return self::$locale->percent(round($n, $precision + 2)); 642 } 643 644 /** 645 * Translate a plural string 646 * echo self::plural('There is an error', 'There are errors', $num_errors); 647 * echo self::plural('There is one error', 'There are %s errors', $num_errors); 648 * echo self::plural('There is %1$s %2$s cat', 'There are %1$s %2$s cats', $num, $num, $colour); 649 * 650 * @param string $singular 651 * @param string $plural 652 * @param int $count 653 * @param string ...$args 654 * 655 * @return string 656 */ 657 public static function plural(string $singular, string $plural, int $count, ...$args): string 658 { 659 $message = self::$translator->translatePlural($singular, $plural, $count); 660 661 return sprintf($message, ...$args); 662 } 663 664 /** 665 * UTF8 version of PHP::strrev() 666 * 667 * Reverse RTL text for third-party libraries such as GD2 and googlechart. 668 * 669 * These do not support UTF8 text direction, so we must mimic it for them. 670 * 671 * Numbers are always rendered LTR, even in RTL text. 672 * The visual direction of characters such as parentheses should be reversed. 673 * 674 * @param string $text Text to be reversed 675 * 676 * @return string 677 */ 678 public static function reverseText($text): string 679 { 680 // Remove HTML markup - we can't display it and it is LTR. 681 $text = strip_tags($text); 682 // Remove HTML entities. 683 $text = html_entity_decode($text, ENT_QUOTES, 'UTF-8'); 684 685 // LTR text doesn't need reversing 686 if (self::scriptDirection(self::textScript($text)) === 'ltr') { 687 return $text; 688 } 689 690 // Mirrored characters 691 $text = strtr($text, self::MIRROR_CHARACTERS); 692 693 $reversed = ''; 694 $digits = ''; 695 while ($text != '') { 696 $letter = mb_substr($text, 0, 1); 697 $text = mb_substr($text, 1); 698 if (strpos(self::DIGITS, $letter) !== false) { 699 $digits .= $letter; 700 } else { 701 $reversed = $letter . $digits . $reversed; 702 $digits = ''; 703 } 704 } 705 706 return $digits . $reversed; 707 } 708 709 /** 710 * Return the direction (ltr or rtl) for a given script 711 * 712 * The PHP/intl library does not provde this information, so we need 713 * our own lookup table. 714 * 715 * @param string $script 716 * 717 * @return string 718 */ 719 public static function scriptDirection($script) 720 { 721 switch ($script) { 722 case 'Arab': 723 case 'Hebr': 724 case 'Mong': 725 case 'Thaa': 726 return 'rtl'; 727 default: 728 return 'ltr'; 729 } 730 } 731 732 /** 733 * Perform a case-insensitive comparison of two strings. 734 * 735 * @param string $string1 736 * @param string $string2 737 * 738 * @return int 739 */ 740 public static function strcasecmp($string1, $string2) 741 { 742 if (self::$collator instanceof Collator) { 743 return self::$collator->compare($string1, $string2); 744 } 745 746 return strcmp(self::strtolower($string1), self::strtolower($string2)); 747 } 748 749 /** 750 * Convert a string to lower case. 751 * 752 * @param string $string 753 * 754 * @return string 755 */ 756 public static function strtolower($string): string 757 { 758 if (in_array(self::$locale->language()->code(), self::DOTLESS_I_LOCALES)) { 759 $string = strtr($string, self::DOTLESS_I_TOLOWER); 760 } 761 762 return mb_strtolower($string); 763 } 764 765 /** 766 * Convert a string to upper case. 767 * 768 * @param string $string 769 * 770 * @return string 771 */ 772 public static function strtoupper($string): string 773 { 774 if (in_array(self::$locale->language()->code(), self::DOTLESS_I_LOCALES)) { 775 $string = strtr($string, self::DOTLESS_I_TOUPPER); 776 } 777 778 return mb_strtoupper($string); 779 } 780 781 /** 782 * Identify the script used for a piece of text 783 * 784 * @param $string 785 * 786 * @return string 787 */ 788 public static function textScript($string): string 789 { 790 $string = strip_tags($string); // otherwise HTML tags show up as latin 791 $string = html_entity_decode($string, ENT_QUOTES, 'UTF-8'); // otherwise HTML entities show up as latin 792 $string = str_replace([ 793 '@N.N.', 794 '@P.N.', 795 ], '', $string); // otherwise unknown names show up as latin 796 $pos = 0; 797 $strlen = strlen($string); 798 while ($pos < $strlen) { 799 // get the Unicode Code Point for the character at position $pos 800 $byte1 = ord($string[$pos]); 801 if ($byte1 < 0x80) { 802 $code_point = $byte1; 803 $chrlen = 1; 804 } elseif ($byte1 < 0xC0) { 805 // Invalid continuation character 806 return 'Latn'; 807 } elseif ($byte1 < 0xE0) { 808 $code_point = (($byte1 & 0x1F) << 6) + (ord($string[$pos + 1]) & 0x3F); 809 $chrlen = 2; 810 } elseif ($byte1 < 0xF0) { 811 $code_point = (($byte1 & 0x0F) << 12) + ((ord($string[$pos + 1]) & 0x3F) << 6) + (ord($string[$pos + 2]) & 0x3F); 812 $chrlen = 3; 813 } elseif ($byte1 < 0xF8) { 814 $code_point = (($byte1 & 0x07) << 24) + ((ord($string[$pos + 1]) & 0x3F) << 12) + ((ord($string[$pos + 2]) & 0x3F) << 6) + (ord($string[$pos + 3]) & 0x3F); 815 $chrlen = 3; 816 } else { 817 // Invalid UTF 818 return 'Latn'; 819 } 820 821 foreach (self::SCRIPT_CHARACTER_RANGES as $range) { 822 if ($code_point >= $range[1] && $code_point <= $range[2]) { 823 return $range[0]; 824 } 825 } 826 // Not a recognised script. Maybe punctuation, spacing, etc. Keep looking. 827 $pos += $chrlen; 828 } 829 830 return 'Latn'; 831 } 832 833 /** 834 * Convert a number of seconds into a relative time. For example, 630 => "10 hours, 30 minutes ago" 835 * 836 * @param int $seconds 837 * 838 * @return string 839 */ 840 public static function timeAgo($seconds) 841 { 842 $minute = 60; 843 $hour = 60 * $minute; 844 $day = 24 * $hour; 845 $month = 30 * $day; 846 $year = 365 * $day; 847 848 if ($seconds > $year) { 849 $years = intdiv($seconds, $year); 850 851 return self::plural('%s year ago', '%s years ago', $years, self::number($years)); 852 } 853 854 if ($seconds > $month) { 855 $months = intdiv($seconds, $month); 856 857 return self::plural('%s month ago', '%s months ago', $months, self::number($months)); 858 } 859 860 if ($seconds > $day) { 861 $days = intdiv($seconds, $day); 862 863 return self::plural('%s day ago', '%s days ago', $days, self::number($days)); 864 } 865 866 if ($seconds > $hour) { 867 $hours = intdiv($seconds, $hour); 868 869 return self::plural('%s hour ago', '%s hours ago', $hours, self::number($hours)); 870 } 871 872 if ($seconds > $minute) { 873 $minutes = intdiv($seconds, $minute); 874 875 return self::plural('%s minute ago', '%s minutes ago', $minutes, self::number($minutes)); 876 } 877 878 return self::plural('%s second ago', '%s seconds ago', $seconds, self::number($seconds)); 879 } 880 881 /** 882 * What format is used to display dates in the current locale? 883 * 884 * @return string 885 */ 886 public static function timeFormat(): string 887 { 888 /* I18N: This is the format string for the time-of-day. See http://php.net/date for codes */ 889 return self::$translator->translate('%H:%i:%s'); 890 } 891 892 /** 893 * Translate a string, and then substitute placeholders 894 * 895 * echo I18N::translate('Hello World!'); 896 * echo I18N::translate('The %s sat on the mat', 'cat'); 897 * 898 * @param string $message 899 * @param string ...$args 900 * 901 * @return string 902 */ 903 public static function translate(string $message, ...$args): string 904 { 905 $message = self::$translator->translate($message); 906 907 return sprintf($message, ...$args); 908 } 909 910 /** 911 * Context sensitive version of translate. 912 * echo I18N::translateContext('NOMINATIVE', 'January'); 913 * echo I18N::translateContext('GENITIVE', 'January'); 914 * 915 * @param string $context 916 * @param string $message 917 * @param string ...$args 918 * 919 * @return string 920 */ 921 public static function translateContext(string $context, string $message, ...$args): string 922 { 923 $message = self::$translator->translateContext($context, $message); 924 925 return sprintf($message, ...$args); 926 } 927} 928