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