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