1<?php 2/** 3 * webtrees: online genealogy 4 * Copyright (C) 2017 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 $ex) { 128 // No such locale exists? 129 } 130 } 131 } 132 usort($locales, '\Fisharebest\Localization\Locale::compare'); 133 134 return $locales; 135 } 136 137 /** 138 * Which MySQL collation should be used for this locale? 139 * 140 * @return string 141 */ 142 public static function collation() { 143 $collation = self::$locale->collation(); 144 switch ($collation) { 145 case 'croatian_ci': 146 case 'german2_ci': 147 case 'vietnamese_ci': 148 // Only available in MySQL 5.6 149 return 'utf8_unicode_ci'; 150 default: 151 return 'utf8_' . $collation; 152 } 153 } 154 155 /** 156 * What format is used to display dates in the current locale? 157 * 158 * @return string 159 */ 160 public static function dateFormat() { 161 return /* I18N: This is the format string for full dates. See http://php.net/date for codes */ self::$translator->translate('%j %F %Y'); 162 } 163 164 /** 165 * Generate consistent I18N for datatables.js 166 * 167 * @param array|null $lengths An optional array of page lengths 168 * 169 * @return string 170 */ 171 public static function datatablesI18N(array $lengths = [10, 20, 30, 50, 100, -1]) { 172 $length_options = Bootstrap4::select(FunctionsEdit::numericOptions($lengths), 10); 173 174 return 175 '"formatNumber": function(n) { return String(n).replace(/[0-9]/g, function(w) { return ("' . self::$locale->digits('0123456789') . '")[+w]; }); },' . 176 '"language": {' . 177 ' "paginate": {' . 178 ' "first": "' . /* I18N: A button label, first page */ self::translate('first') . '",' . 179 ' "last": "' . /* I18N: A button label, last page */ self::translate('last') . '",' . 180 ' "next": "' . /* I18N: A button label, next page */ self::translate('next') . '",' . 181 ' "previous": "' . /* I18N: A button label, previous page */ self::translate('previous') . '"' . 182 ' },' . 183 ' "emptyTable": "' . self::translate('No records to display') . '",' . 184 ' "info": "' . /* I18N: %s are placeholders for numbers */ self::translate('Showing %1$s to %2$s of %3$s', '_START_', '_END_', '_TOTAL_') . '",' . 185 ' "infoEmpty": "' . self::translate('Showing %1$s to %2$s of %3$s', self::$locale->digits('0'), self::$locale->digits('0'), self::$locale->digits('0')) . '",' . 186 ' "infoFiltered": "' . /* I18N: %s is a placeholder for a number */ self::translate('(filtered from %s total entries)', '_MAX_') . '",' . 187 ' "lengthMenu": "' . /* I18N: %s is a number of records per page */ self::translate('Display %s', addslashes($length_options)) . '",' . 188 ' "loadingRecords": "' . self::translate('Loading…') . '",' . 189 ' "processing": "' . self::translate('Loading…') . '",' . 190 ' "search": "' . self::translate('Filter') . '",' . 191 ' "zeroRecords": "' . self::translate('No records to display') . '"' . 192 '}'; 193 } 194 195 /** 196 * Convert the digits 0-9 into the local script 197 * 198 * Used for years, etc., where we do not want thousands-separators, decimals, etc. 199 * 200 * @param int $n 201 * 202 * @return string 203 */ 204 public static function digits($n) { 205 return self::$locale->digits($n); 206 } 207 208 /** 209 * What is the direction of the current locale 210 * 211 * @return string "ltr" or "rtl" 212 */ 213 public static function direction() { 214 return self::$locale->direction(); 215 } 216 217 /** 218 * What is the first day of the week. 219 * 220 * @return int Sunday=0, Monday=1, etc. 221 */ 222 public static function firstDay() { 223 return self::$locale->territory()->firstDay(); 224 } 225 226 /** 227 * Convert a GEDCOM age string into translated_text 228 * 229 * NB: The import function will have normalised this, so we don't need 230 * to worry about badly formatted strings 231 * NOTE: this function is not yet complete - eventually it will replace FunctionsDate::get_age_at_event() 232 * 233 * @param $string 234 * 235 * @return string 236 */ 237 public static function gedcomAge($string) { 238 switch ($string) { 239 case 'STILLBORN': 240 // I18N: Description of an individual’s age at an event. For example, Died 14 Jan 1900 (stillborn) 241 return self::translate('(stillborn)'); 242 case 'INFANT': 243 // I18N: Description of an individual’s age at an event. For example, Died 14 Jan 1900 (in infancy) 244 return self::translate('(in infancy)'); 245 case 'CHILD': 246 // I18N: Description of an individual’s age at an event. For example, Died 14 Jan 1900 (in childhood) 247 return self::translate('(in childhood)'); 248 } 249 $age = []; 250 if (preg_match('/(\d+)y/', $string, $match)) { 251 // I18N: Part of an age string. e.g. 5 years, 4 months and 3 days 252 $years = $match[1]; 253 $age[] = self::plural('%s year', '%s years', $years, self::number($years)); 254 } else { 255 $years = -1; 256 } 257 if (preg_match('/(\d+)m/', $string, $match)) { 258 // I18N: Part of an age string. e.g. 5 years, 4 months and 3 days 259 $age[] = self::plural('%s month', '%s months', $match[1], self::number($match[1])); 260 } 261 if (preg_match('/(\d+)w/', $string, $match)) { 262 // I18N: Part of an age string. e.g. 7 weeks and 3 days 263 $age[] = self::plural('%s week', '%s weeks', $match[1], self::number($match[1])); 264 } 265 if (preg_match('/(\d+)d/', $string, $match)) { 266 // I18N: Part of an age string. e.g. 5 years, 4 months and 3 days 267 $age[] = self::plural('%s day', '%s days', $match[1], self::number($match[1])); 268 } 269 // If an age is just a number of years, only show the number 270 if (count($age) === 1 && $years >= 0) { 271 $age = $years; 272 } 273 if ($age) { 274 if (!substr_compare($string, '<', 0, 1)) { 275 // I18N: Description of an individual’s age at an event. For example, Died 14 Jan 1900 (aged less than 21 years) 276 return self::translate('(aged less than %s)', $age); 277 } elseif (!substr_compare($string, '>', 0, 1)) { 278 // I18N: Description of an individual’s age at an event. For example, Died 14 Jan 1900 (aged more than 21 years) 279 return self::translate('(aged more than %s)', $age); 280 } else { 281 // I18N: Description of an individual’s age at an event. For example, Died 14 Jan 1900 (aged 43 years) 282 return self::translate('(aged %s)', $age); 283 } 284 } else { 285 // Not a valid string? 286 return self::translate('(aged %s)', $string); 287 } 288 } 289 290 /** 291 * Generate i18n markup for the <html> tag, e.g. lang="ar" dir="rtl" 292 * 293 * @return string 294 */ 295 public static function htmlAttributes() { 296 return self::$locale->htmlAttributes(); 297 } 298 299 /** 300 * Initialise the translation adapter with a locale setting. 301 * 302 * @param string $code Use this locale/language code, or choose one automatically 303 * 304 * @return string $string 305 */ 306 public static function init($code = '') { 307 global $WT_TREE; 308 309 mb_internal_encoding('UTF-8'); 310 311 if ($code !== '') { 312 // Create the specified locale 313 self::$locale = Locale::create($code); 314 } else { 315 // Negotiate a locale, but if we can't then use a failsafe 316 self::$locale = new LocaleEnUs; 317 if (Session::has('locale') && file_exists(WT_ROOT . 'language/' . Session::get('locale') . '.mo')) { 318 // Previously used 319 self::$locale = Locale::create(Session::get('locale')); 320 } else { 321 // Browser negotiation 322 $default_locale = new LocaleEnUs; 323 try { 324 if ($WT_TREE) { 325 $default_locale = Locale::create($WT_TREE->getPreference('LANGUAGE')); 326 } 327 } catch (\Exception $ex) { 328 } 329 self::$locale = Locale::httpAcceptLanguage($_SERVER, self::installedLocales(), $default_locale); 330 } 331 } 332 333 $cache_dir = WT_DATA_DIR . 'cache/'; 334 $cache_file = $cache_dir . 'language-' . self::$locale->languageTag() . '-cache.php'; 335 if (file_exists($cache_file)) { 336 $filemtime = filemtime($cache_file); 337 } else { 338 $filemtime = 0; 339 } 340 341 // Load the translation file(s) 342 // Note that glob() returns false instead of an empty array when open_basedir_restriction 343 // is in force and no files are found. See PHP bug #47358. 344 if (defined('GLOB_BRACE')) { 345 $translation_files = array_merge( 346 [WT_ROOT . 'language/' . self::$locale->languageTag() . '.mo'], 347 glob(WT_MODULES_DIR . '*/language/' . self::$locale->languageTag() . '.{csv,php,mo}', GLOB_BRACE) ?: [], 348 glob(WT_DATA_DIR . 'language/' . self::$locale->languageTag() . '.{csv,php,mo}', GLOB_BRACE) ?: [] 349 ); 350 } else { 351 // Some servers do not have GLOB_BRACE - see http://php.net/manual/en/function.glob.php 352 $translation_files = array_merge( 353 [WT_ROOT . 'language/' . self::$locale->languageTag() . '.mo'], 354 glob(WT_MODULES_DIR . '*/language/' . self::$locale->languageTag() . '.csv') ?: [], 355 glob(WT_MODULES_DIR . '*/language/' . self::$locale->languageTag() . '.php') ?: [], 356 glob(WT_MODULES_DIR . '*/language/' . self::$locale->languageTag() . '.mo') ?: [], 357 glob(WT_DATA_DIR . 'language/' . self::$locale->languageTag() . '.csv') ?: [], 358 glob(WT_DATA_DIR . 'language/' . self::$locale->languageTag() . '.php') ?: [], 359 glob(WT_DATA_DIR . 'language/' . self::$locale->languageTag() . '.mo') ?: [] 360 ); 361 } 362 // Rebuild files after one hour 363 $rebuild_cache = time() > $filemtime + 3600; 364 // Rebuild files if any translation file has been updated 365 foreach ($translation_files as $translation_file) { 366 if (filemtime($translation_file) > $filemtime) { 367 $rebuild_cache = true; 368 break; 369 } 370 } 371 372 if ($rebuild_cache) { 373 $translations = []; 374 foreach ($translation_files as $translation_file) { 375 $translation = new Translation($translation_file); 376 $translations = array_merge($translations, $translation->asArray()); 377 } 378 try { 379 File::mkdir($cache_dir); 380 file_put_contents($cache_file, '<?php return ' . var_export($translations, true) . ';'); 381 } catch (Exception $ex) { 382 // During setup, we may not have been able to create it. 383 } 384 } else { 385 $translations = include $cache_file; 386 } 387 388 // Create a translator 389 self::$translator = new Translator($translations, self::$locale->pluralRule()); 390 391 self::$list_separator = /* I18N: This punctuation is used to separate lists of items */ self::translate(', '); 392 393 // Create a collator 394 try { 395 // PHP 5.6 cannot catch errors, so test first 396 if (class_exists('Collator')) { 397 self::$collator = new Collator(self::$locale->code()); 398 // Ignore upper/lower case differences 399 self::$collator->setStrength(Collator::SECONDARY); 400 } 401 } catch (Exception $ex) { 402 // PHP-INTL is not installed? We'll use a fallback later. 403 } 404 405 return self::$locale->languageTag(); 406 } 407 408 /** 409 * All locales for which a translation file exists. 410 * 411 * @return LocaleInterface[] 412 */ 413 public static function installedLocales() { 414 $locales = []; 415 foreach (glob(WT_ROOT . 'language/*.mo') as $file) { 416 try { 417 $locales[] = Locale::create(basename($file, '.mo')); 418 } catch (\Exception $ex) { 419 // Not a recognised locale 420 } 421 } 422 usort($locales, '\Fisharebest\Localization\Locale::compare'); 423 424 return $locales; 425 } 426 427 /** 428 * Return the endonym for a given language - as per http://cldr.unicode.org/ 429 * 430 * @param string $locale 431 * 432 * @return string 433 */ 434 public static function languageName($locale) { 435 return Locale::create($locale)->endonym(); 436 } 437 438 /** 439 * Return the script used by a given language 440 * 441 * @param string $locale 442 * 443 * @return string 444 */ 445 public static function languageScript($locale) { 446 return Locale::create($locale)->script()->code(); 447 } 448 449 /** 450 * Translate a number into the local representation. 451 * 452 * e.g. 12345.67 becomes 453 * en: 12,345.67 454 * fr: 12 345,67 455 * de: 12.345,67 456 * 457 * @param float $n 458 * @param int $precision 459 * 460 * @return string 461 */ 462 public static function number($n, $precision = 0) { 463 return self::$locale->number(round($n, $precision)); 464 } 465 466 /** 467 * Translate a fraction into a percentage. 468 * 469 * e.g. 0.123 becomes 470 * en: 12.3% 471 * fr: 12,3 % 472 * de: 12,3% 473 * 474 * @param float $n 475 * @param int $precision 476 * 477 * @return string 478 */ 479 public static function percentage($n, $precision = 0) { 480 return self::$locale->percent(round($n, $precision + 2)); 481 } 482 483 /** 484 * Translate a plural string 485 * 486 * echo self::plural('There is an error', 'There are errors', $num_errors); 487 * echo self::plural('There is one error', 'There are %s errors', $num_errors); 488 * echo self::plural('There is %1$s %2$s cat', 'There are %1$s %2$s cats', $num, $num, $colour); 489 * 490 * @return string 491 */ 492 public static function plural(/* var_args */) { 493 $args = func_get_args(); 494 $args[0] = self::$translator->translatePlural($args[0], $args[1], (int) $args[2]); 495 unset($args[1], $args[2]); 496 497 return self::substitutePlaceholders($args); 498 } 499 500 /** 501 * UTF8 version of PHP::strrev() 502 * 503 * Reverse RTL text for third-party libraries such as GD2 and googlechart. 504 * 505 * These do not support UTF8 text direction, so we must mimic it for them. 506 * 507 * Numbers are always rendered LTR, even in RTL text. 508 * The visual direction of characters such as parentheses should be reversed. 509 * 510 * @param string $text Text to be reversed 511 * 512 * @return string 513 */ 514 public static function reverseText($text) { 515 // Remove HTML markup - we can't display it and it is LTR. 516 $text = strip_tags($text); 517 // Remove HTML entities. 518 $text = html_entity_decode($text, ENT_QUOTES, 'UTF-8'); 519 520 // LTR text doesn't need reversing 521 if (self::scriptDirection(self::textScript($text)) === 'ltr') { 522 return $text; 523 } 524 525 // Mirrored characters 526 $text = strtr($text, self::MIRROR_CHARACTERS); 527 528 $reversed = ''; 529 $digits = ''; 530 while ($text != '') { 531 $letter = mb_substr($text, 0, 1); 532 $text = mb_substr($text, 1); 533 if (strpos(self::DIGITS, $letter) !== false) { 534 $digits .= $letter; 535 } else { 536 $reversed = $letter . $digits . $reversed; 537 $digits = ''; 538 } 539 } 540 541 return $digits . $reversed; 542 } 543 544 /** 545 * Return the direction (ltr or rtl) for a given script 546 * 547 * The PHP/intl library does not provde this information, so we need 548 * our own lookup table. 549 * 550 * @param string $script 551 * 552 * @return string 553 */ 554 public static function scriptDirection($script) { 555 switch ($script) { 556 case 'Arab': 557 case 'Hebr': 558 case 'Mong': 559 case 'Thaa': 560 return 'rtl'; 561 default: 562 return 'ltr'; 563 } 564 } 565 566 /** 567 * Perform a case-insensitive comparison of two strings. 568 * 569 * @param string $string1 570 * @param string $string2 571 * 572 * @return int 573 */ 574 public static function strcasecmp($string1, $string2) { 575 if (self::$collator instanceof Collator) { 576 return self::$collator->compare($string1, $string2); 577 } else { 578 return strcmp(self::strtolower($string1), self::strtolower($string2)); 579 } 580 } 581 582 /** 583 * Convert a string to lower case. 584 * 585 * @param string $string 586 * 587 * @return string 588 */ 589 public static function strtolower($string) { 590 if (in_array(self::$locale->language()->code(), self::DOTLESS_I_LOCALES)) { 591 $string = strtr($string, self::DOTLESS_I_TOLOWER); 592 } 593 594 return mb_strtolower($string); 595 } 596 597 /** 598 * Convert a string to upper case. 599 * 600 * @param string $string 601 * 602 * @return string 603 */ 604 public static function strtoupper($string) { 605 if (in_array(self::$locale->language()->code(), self::DOTLESS_I_LOCALES)) { 606 $string = strtr($string, self::DOTLESS_I_TOUPPER); 607 } 608 609 return mb_strtoupper($string); 610 } 611 612 /** 613 * Substitute any "%s" placeholders in a translated string. 614 * This also allows us to have translated strings that contain 615 * "%" characters, which can't be passed to sprintf. 616 * 617 * @param string[] $args translated string plus optional parameters 618 * 619 * @return string 620 */ 621 private static function substitutePlaceholders(array $args) { 622 if (count($args) > 1) { 623 return call_user_func_array('sprintf', $args); 624 } else { 625 return $args[0]; 626 } 627 } 628 629 /** 630 * Identify the script used for a piece of text 631 * 632 * @param $string 633 * 634 * @return string 635 */ 636 public static function textScript($string) { 637 $string = strip_tags($string); // otherwise HTML tags show up as latin 638 $string = html_entity_decode($string, ENT_QUOTES, 'UTF-8'); // otherwise HTML entities show up as latin 639 $string = str_replace(['@N.N.', '@P.N.'], '', $string); // otherwise unknown names show up as latin 640 $pos = 0; 641 $strlen = strlen($string); 642 while ($pos < $strlen) { 643 // get the Unicode Code Point for the character at position $pos 644 $byte1 = ord($string[$pos]); 645 if ($byte1 < 0x80) { 646 $code_point = $byte1; 647 $chrlen = 1; 648 } elseif ($byte1 < 0xC0) { 649 // Invalid continuation character 650 return 'Latn'; 651 } elseif ($byte1 < 0xE0) { 652 $code_point = (($byte1 & 0x1F) << 6) + (ord($string[$pos + 1]) & 0x3F); 653 $chrlen = 2; 654 } elseif ($byte1 < 0xF0) { 655 $code_point = (($byte1 & 0x0F) << 12) + ((ord($string[$pos + 1]) & 0x3F) << 6) + (ord($string[$pos + 2]) & 0x3F); 656 $chrlen = 3; 657 } elseif ($byte1 < 0xF8) { 658 $code_point = (($byte1 & 0x07) << 24) + ((ord($string[$pos + 1]) & 0x3F) << 12) + ((ord($string[$pos + 2]) & 0x3F) << 6) + (ord($string[$pos + 3]) & 0x3F); 659 $chrlen = 3; 660 } else { 661 // Invalid UTF 662 return 'Latn'; 663 } 664 665 foreach (self::SCRIPT_CHARACTER_RANGES as $range) { 666 if ($code_point >= $range[1] && $code_point <= $range[2]) { 667 return $range[0]; 668 } 669 } 670 // Not a recognised script. Maybe punctuation, spacing, etc. Keep looking. 671 $pos += $chrlen; 672 } 673 674 return 'Latn'; 675 } 676 677 /** 678 * Convert a number of seconds into a relative time. For example, 630 => "10 hours, 30 minutes ago" 679 * 680 * @param int $seconds 681 * 682 * @return string 683 */ 684 public static function timeAgo($seconds) { 685 $minute = 60; 686 $hour = 60 * $minute; 687 $day = 24 * $hour; 688 $month = 30 * $day; 689 $year = 365 * $day; 690 691 if ($seconds > $year) { 692 $years = (int) ($seconds / $year); 693 694 return self::plural('%s year ago', '%s years ago', $years, self::number($years)); 695 } elseif ($seconds > $month) { 696 $months = (int) ($seconds / $month); 697 698 return self::plural('%s month ago', '%s months ago', $months, self::number($months)); 699 } elseif ($seconds > $day) { 700 $days = (int) ($seconds / $day); 701 702 return self::plural('%s day ago', '%s days ago', $days, self::number($days)); 703 } elseif ($seconds > $hour) { 704 $hours = (int) ($seconds / $hour); 705 706 return self::plural('%s hour ago', '%s hours ago', $hours, self::number($hours)); 707 } elseif ($seconds > $minute) { 708 $minutes = (int) ($seconds / $minute); 709 710 return self::plural('%s minute ago', '%s minutes ago', $minutes, self::number($minutes)); 711 } else { 712 return self::plural('%s second ago', '%s seconds ago', $seconds, self::number($seconds)); 713 } 714 } 715 716 /** 717 * What format is used to display dates in the current locale? 718 * 719 * @return string 720 */ 721 public static function timeFormat() { 722 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'); 723 } 724 725 /** 726 * Translate a string, and then substitute placeholders 727 * 728 * echo I18N::translate('Hello World!'); 729 * echo I18N::translate('The %s sat on the mat', 'cat'); 730 * 731 * @return string 732 */ 733 public static function translate(/* var_args */) { 734 $args = func_get_args(); 735 $args[0] = self::$translator->translate($args[0]); 736 737 return self::substitutePlaceholders($args); 738 } 739 740 /** 741 * Context sensitive version of translate. 742 * 743 * echo I18N::translateContext('NOMINATIVE', 'January'); 744 * echo I18N::translateContext('GENITIVE', 'January'); 745 * 746 * @return string 747 */ 748 public static function translateContext(/* var_args */) { 749 $args = func_get_args(); 750 $args[0] = self::$translator->translateContext($args[0], $args[1]); 751 unset($args[1]); 752 753 return self::substitutePlaceholders($args); 754 } 755 756 /** 757 * What is the last day of the weekend. 758 * 759 * @return int Sunday=0, Monday=1, etc. 760 */ 761 public static function weekendEnd() { 762 return self::$locale->territory()->weekendEnd(); 763 } 764 765 /** 766 * What is the first day of the weekend. 767 * 768 * @return int Sunday=0, Monday=1, etc. 769 */ 770 public static function weekendStart() { 771 return self::$locale->territory()->weekendStart(); 772 } 773 774 /** 775 * Which calendar prefered in this locale? 776 * 777 * @return CalendarInterface 778 */ 779 public static function defaultCalendar() { 780 switch (self::$locale->languageTag()) { 781 case 'ar': 782 return new ArabicCalendar; 783 case 'fa': 784 return new PersianCalendar; 785 case 'he': 786 case 'yi': 787 return new JewishCalendar; 788 default: 789 return new GregorianCalendar; 790 } 791 } 792} 793