LanguageAdapter.php 24 KB
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851
<?php
/**
 * Joomla! Content Management System
 *
 * @copyright  Copyright (C) 2005 - 2019 Open Source Matters, Inc. All rights reserved.
 * @license    GNU General Public License version 2 or later; see LICENSE.txt
 */

namespace Joomla\CMS\Installer\Adapter;

defined('JPATH_PLATFORM') or die;

use Joomla\CMS\Application\ApplicationHelper;
use Joomla\CMS\Component\ComponentHelper;
use Joomla\CMS\Installer\Installer;
use Joomla\CMS\Installer\InstallerAdapter;
use Joomla\CMS\Language\Language;
use Joomla\CMS\Language\LanguageHelper;
use Joomla\CMS\Table\Table;
use Joomla\Registry\Registry;

jimport('joomla.filesystem.folder');

/**
 * Language installer
 *
 * @since  3.1
 */
class LanguageAdapter extends InstallerAdapter
{
	/**
	 * Core language pack flag
	 *
	 * @var    boolean
	 * @since  3.0.0
	 */
	protected $core = false;

	/**
	 * Method to copy the extension's base files from the `<files>` tag(s) and the manifest file
	 *
	 * @return  void
	 *
	 * @since   3.4
	 * @throws  \RuntimeException
	 */
	protected function copyBaseFiles()
	{
		// TODO - Refactor adapter to use common code
	}

	/**
	 * Method to do any prechecks and setup the install paths for the extension
	 *
	 * @return  void
	 *
	 * @since   3.4
	 */
	protected function setupInstallPaths()
	{
		// TODO - Refactor adapter to use common code
	}

	/**
	 * Method to store the extension to the database
	 *
	 * @return  void
	 *
	 * @since   3.4
	 * @throws  \RuntimeException
	 */
	protected function storeExtension()
	{
		// TODO - Refactor adapter to use common code
	}

	/**
	 * Custom install method
	 *
	 * Note: This behaves badly due to hacks made in the middle of 1.5.x to add
	 * the ability to install multiple distinct packs in one install. The
	 * preferred method is to use a package to install multiple language packs.
	 *
	 * @return  boolean|integer  The extension ID on success, boolean false on failure
	 *
	 * @since   3.1
	 */
	public function install()
	{
		$source = $this->parent->getPath('source');

		if (!$source)
		{
			$this->parent
				->setPath(
				'source',
				($this->parent->extension->client_id ? JPATH_ADMINISTRATOR : JPATH_SITE) . '/language/' . $this->parent->extension->element
			);
		}

		$this->setManifest($this->parent->getManifest());

		// Get the client application target
		if ($cname = (string) $this->getManifest()->attributes()->client)
		{
			// Attempt to map the client to a base path
			$client = ApplicationHelper::getClientInfo($cname, true);

			if ($client === null)
			{
				$this->parent->abort(\JText::sprintf('JLIB_INSTALLER_ABORT', \JText::sprintf('JLIB_INSTALLER_ERROR_UNKNOWN_CLIENT_TYPE', $cname)));

				return false;
			}

			$basePath = $client->path;
			$clientId = $client->id;
			$element  = $this->getManifest()->files;

			return $this->_install($cname, $basePath, $clientId, $element);
		}
		else
		{
			// No client attribute was found so we assume the site as the client
			$cname    = 'site';
			$basePath = JPATH_SITE;
			$clientId = 0;
			$element  = $this->getManifest()->files;

			return $this->_install($cname, $basePath, $clientId, $element);
		}
	}

	/**
	 * Install function that is designed to handle individual clients
	 *
	 * @param   string   $cname     Cname @todo: not used
	 * @param   string   $basePath  The base name.
	 * @param   integer  $clientId  The client id.
	 * @param   object   &$element  The XML element.
	 *
	 * @return  boolean|integer  The extension ID on success, boolean false on failure
	 *
	 * @since   3.1
	 */
	protected function _install($cname, $basePath, $clientId, &$element)
	{
		$this->setManifest($this->parent->getManifest());

		// Get the language name
		// Set the extensions name
		$name = \JFilterInput::getInstance()->clean((string) $this->getManifest()->name, 'cmd');
		$this->set('name', $name);

		// Get the Language tag [ISO tag, eg. en-GB]
		$tag = (string) $this->getManifest()->tag;

		// Check if we found the tag - if we didn't, we may be trying to install from an older language package
		if (!$tag)
		{
			$this->parent->abort(\JText::sprintf('JLIB_INSTALLER_ABORT', \JText::_('JLIB_INSTALLER_ERROR_NO_LANGUAGE_TAG')));

			return false;
		}

		$this->set('tag', $tag);

		// Set the language installation path
		$this->parent->setPath('extension_site', $basePath . '/language/' . $tag);

		// Do we have a meta file in the file list?  In other words... is this a core language pack?
		if ($element && count($element->children()))
		{
			$files = $element->children();

			foreach ($files as $file)
			{
				if ((string) $file->attributes()->file === 'meta')
				{
					$this->core = true;
					break;
				}
			}
		}

		// If the language directory does not exist, let's create it
		$created = false;

		if (!file_exists($this->parent->getPath('extension_site')))
		{
			if (!$created = \JFolder::create($this->parent->getPath('extension_site')))
			{
				$this->parent
					->abort(
					\JText::sprintf(
						'JLIB_INSTALLER_ABORT',
						\JText::sprintf('JLIB_INSTALLER_ERROR_CREATE_FOLDER_FAILED', $this->parent->getPath('extension_site'))
					)
				);

				return false;
			}
		}
		else
		{
			// Look for an update function or update tag
			$updateElement = $this->getManifest()->update;

			// Upgrade manually set or update tag detected
			if ($updateElement || $this->parent->isUpgrade())
			{
				// Transfer control to the update function
				return $this->update();
			}
			elseif (!$this->parent->isOverwrite())
			{
				// Overwrite is set
				// We didn't have overwrite set, find an update function or find an update tag so lets call it safe
				if (file_exists($this->parent->getPath('extension_site')))
				{
					// If the site exists say so.
					\JLog::add(
						\JText::sprintf('JLIB_INSTALLER_ABORT', \JText::sprintf('JLIB_INSTALLER_ERROR_FOLDER_IN_USE', $this->parent->getPath('extension_site'))),
						\JLog::WARNING, 'jerror'
					);
				}
				else
				{
					// If the admin exists say so.
					\JLog::add(
						\JText::sprintf('JLIB_INSTALLER_ABORT',
							\JText::sprintf('JLIB_INSTALLER_ERROR_FOLDER_IN_USE', $this->parent->getPath('extension_administrator'))
						),
						\JLog::WARNING, 'jerror'
					);
				}

				return false;
			}
		}

		/*
		 * If we created the language directory we will want to remove it if we
		 * have to roll back the installation, so let's add it to the installation
		 * step stack
		 */
		if ($created)
		{
			$this->parent->pushStep(array('type' => 'folder', 'path' => $this->parent->getPath('extension_site')));
		}

		// Copy all the necessary files
		if ($this->parent->parseFiles($element) === false)
		{
			// Install failed, rollback changes
			$this->parent->abort();

			return false;
		}

		// Parse optional tags
		$this->parent->parseMedia($this->getManifest()->media);

		// Copy all the necessary font files to the common pdf_fonts directory
		$this->parent->setPath('extension_site', $basePath . '/language/pdf_fonts');
		$overwrite = $this->parent->setOverwrite(true);

		if ($this->parent->parseFiles($this->getManifest()->fonts) === false)
		{
			// Install failed, rollback changes
			$this->parent->abort();

			return false;
		}

		$this->parent->setOverwrite($overwrite);

		// Get the language description
		$description = (string) $this->getManifest()->description;

		if ($description)
		{
			$this->parent->set('message', \JText::_($description));
		}
		else
		{
			$this->parent->set('message', '');
		}

		// Add an entry to the extension table with a whole heap of defaults
		$row = Table::getInstance('extension');
		$row->set('name', $this->get('name'));
		$row->set('type', 'language');
		$row->set('element', $this->get('tag'));

		// There is no folder for languages
		$row->set('folder', '');
		$row->set('enabled', 1);
		$row->set('protected', 0);
		$row->set('access', 0);
		$row->set('client_id', $clientId);
		$row->set('params', $this->parent->getParams());
		$row->set('manifest_cache', $this->parent->generateManifestCache());

		if (!$row->check() || !$row->store())
		{
			// Install failed, roll back changes
			$this->parent->abort(\JText::sprintf('JLIB_INSTALLER_ABORT', $row->getError()));

			return false;
		}

		// Create an unpublished content language.
		if ((int) $clientId === 0)
		{
			// Load the site language manifest.
			$siteLanguageManifest = LanguageHelper::parseXMLLanguageFile(JPATH_SITE . '/language/' . $this->tag . '/' . $this->tag . '.xml');

			// Set the content language title as the language metadata name.
			$contentLanguageTitle = $siteLanguageManifest['name'];

			// Set, as fallback, the content language native title to the language metadata name.
			$contentLanguageNativeTitle = $contentLanguageTitle;

			// If exist, load the native title from the language xml metadata.
			if (isset($siteLanguageManifest['nativeName']) && $siteLanguageManifest['nativeName'])
			{
				$contentLanguageNativeTitle = $siteLanguageManifest['nativeName'];
			}

			// Try to load a language string from the installation language var. Will be removed in 4.0.
			if ($contentLanguageNativeTitle === $contentLanguageTitle)
			{
				if (file_exists(JPATH_INSTALLATION . '/language/' . $this->tag . '/' . $this->tag . '.xml'))
				{
					$installationLanguage = new Language($this->tag);
					$installationLanguage->load('', JPATH_INSTALLATION);

					if ($installationLanguage->hasKey('INSTL_DEFAULTLANGUAGE_NATIVE_LANGUAGE_NAME'))
					{
						// Make sure it will not use the en-GB fallback.
						$defaultLanguage = new Language('en-GB');
						$defaultLanguage->load('', JPATH_INSTALLATION);

						$defaultLanguageNativeTitle      = $defaultLanguage->_('INSTL_DEFAULTLANGUAGE_NATIVE_LANGUAGE_NAME');
						$installationLanguageNativeTitle = $installationLanguage->_('INSTL_DEFAULTLANGUAGE_NATIVE_LANGUAGE_NAME');

						if ($defaultLanguageNativeTitle !== $installationLanguageNativeTitle)
						{
							$contentLanguageNativeTitle = $installationLanguage->_('INSTL_DEFAULTLANGUAGE_NATIVE_LANGUAGE_NAME');
						}
					}
				}
			}

			// Prepare language data for store.
			$languageData = array(
				'lang_id'      => 0,
				'lang_code'    => $this->tag,
				'title'        => $contentLanguageTitle,
				'title_native' => $contentLanguageNativeTitle,
				'sef'          => $this->getSefString($this->tag),
				'image'        => strtolower(str_replace('-', '_', $this->tag)),
				'published'    => 0,
				'ordering'     => 0,
				'access'       => (int) \JFactory::getConfig()->get('access', 1),
				'description'  => '',
				'metakey'      => '',
				'metadesc'     => '',
				'sitename'     => '',
			);

			$tableLanguage = Table::getInstance('language');

			if (!$tableLanguage->bind($languageData) || !$tableLanguage->check() || !$tableLanguage->store() || !$tableLanguage->reorder())
			{
				\JLog::add(
					\JText::sprintf('JLIB_INSTALLER_WARNING_UNABLE_TO_INSTALL_CONTENT_LANGUAGE', $siteLanguageManifest['name'], $tableLanguage->getError()),
					\JLog::NOTICE,
					'jerror'
				);
			}
		}

		// Clobber any possible pending updates
		$update = Table::getInstance('update');
		$uid = $update->find(array('element' => $this->get('tag'), 'type' => 'language', 'folder' => ''));

		if ($uid)
		{
			$update->delete($uid);
		}

		// Clean installed languages cache.
		\JFactory::getCache()->clean('com_languages');

		return $row->get('extension_id');
	}


	/**
	 * Gets a unique language SEF string.
	 *
	 * This function checks other existing language with the same code, if they exist provides a unique SEF name.
	 * For instance: en-GB, en-US and en-AU will share the same SEF code by default: www.mywebsite.com/en/
	 * To avoid this conflict, this function creates an specific SEF in case of existing conflict:
	 * For example: www.mywebsite.com/en-au/
	 *
	 * @param   string  $itemLanguageTag  Language Tag.
	 *
	 * @return  string
	 *
	 * @since   3.7.0
	 */
	protected function getSefString($itemLanguageTag)
	{
		$langs               = explode('-', $itemLanguageTag);
		$prefixToFind        = $langs[0];
		$numberPrefixesFound = 0;

		// Get the sef value of all current content languages.
		$db = \JFactory::getDbo();
		$query = $db->getQuery(true)
			->select($db->qn('sef'))
			->from($db->qn('#__languages'));
		$db->setQuery($query);

		$siteLanguages = $db->loadObjectList();

		foreach ($siteLanguages as $siteLang)
		{
			if ($siteLang->sef === $prefixToFind)
			{
				$numberPrefixesFound++;
			}
		}

		return $numberPrefixesFound === 0 ? $prefixToFind : strtolower($itemLanguageTag);
	}

	/**
	 * Custom update method
	 *
	 * @return  boolean  True on success, false on failure
	 *
	 * @since   3.1
	 */
	public function update()
	{
		$xml = $this->parent->getManifest();

		$this->setManifest($xml);

		$cname = $xml->attributes()->client;

		// Attempt to map the client to a base path
		$client = ApplicationHelper::getClientInfo($cname, true);

		if ($client === null || (empty($cname) && $cname !== 0))
		{
			$this->parent->abort(\JText::sprintf('JLIB_INSTALLER_ABORT', \JText::sprintf('JLIB_INSTALLER_ERROR_UNKNOWN_CLIENT_TYPE', $cname)));

			return false;
		}

		$basePath = $client->path;
		$clientId = $client->id;

		// Get the language name
		// Set the extensions name
		$name = (string) $this->getManifest()->name;
		$name = \JFilterInput::getInstance()->clean($name, 'cmd');
		$this->set('name', $name);

		// Get the Language tag [ISO tag, eg. en-GB]
		$tag = (string) $xml->tag;

		// Check if we found the tag - if we didn't, we may be trying to install from an older language package
		if (!$tag)
		{
			$this->parent->abort(\JText::sprintf('JLIB_INSTALLER_ABORT', \JText::_('JLIB_INSTALLER_ERROR_NO_LANGUAGE_TAG')));

			return false;
		}

		$this->set('tag', $tag);

		// Set the language installation path
		$this->parent->setPath('extension_site', $basePath . '/language/' . $tag);

		// Do we have a meta file in the file list?  In other words... is this a core language pack?
		if (count($xml->files->children()))
		{
			foreach ($xml->files->children() as $file)
			{
				if ((string) $file->attributes()->file === 'meta')
				{
					$this->core = true;
					break;
				}
			}
		}

		// Copy all the necessary files
		if ($this->parent->parseFiles($xml->files) === false)
		{
			// Install failed, rollback changes
			$this->parent->abort();

			return false;
		}

		// Parse optional tags
		$this->parent->parseMedia($xml->media);

		// Copy all the necessary font files to the common pdf_fonts directory
		$this->parent->setPath('extension_site', $basePath . '/language/pdf_fonts');
		$overwrite = $this->parent->setOverwrite(true);

		if ($this->parent->parseFiles($xml->fonts) === false)
		{
			// Install failed, rollback changes
			$this->parent->abort();

			return false;
		}

		$this->parent->setOverwrite($overwrite);

		// Get the language description and set it as message
		$this->parent->set('message', (string) $xml->description);

		/**
		 * ---------------------------------------------------------------------------------------------
		 * Finalization and Cleanup Section
		 * ---------------------------------------------------------------------------------------------
		 */

		// Clobber any possible pending updates
		$update = Table::getInstance('update');
		$uid = $update->find(array('element' => $this->get('tag'), 'type' => 'language', 'client_id' => $clientId));

		if ($uid)
		{
			$update->delete($uid);
		}

		// Update an entry to the extension table
		$row = Table::getInstance('extension');
		$eid = $row->find(array('element' => $this->get('tag'), 'type' => 'language', 'client_id' => $clientId));

		if ($eid)
		{
			$row->load($eid);
		}
		else
		{
			// Set the defaults

			// There is no folder for language
			$row->set('folder', '');
			$row->set('enabled', 1);
			$row->set('protected', 0);
			$row->set('access', 0);
			$row->set('client_id', $clientId);
			$row->set('params', $this->parent->getParams());
		}

		$row->set('name', $this->get('name'));
		$row->set('type', 'language');
		$row->set('element', $this->get('tag'));
		$row->set('manifest_cache', $this->parent->generateManifestCache());

		// Clean installed languages cache.
		\JFactory::getCache()->clean('com_languages');

		if (!$row->check() || !$row->store())
		{
			// Install failed, roll back changes
			$this->parent->abort(\JText::sprintf('JLIB_INSTALLER_ABORT', $row->getError()));

			return false;
		}

		return $row->get('extension_id');
	}

	/**
	 * Custom uninstall method
	 *
	 * @param   string  $eid  The tag of the language to uninstall
	 *
	 * @return  boolean  True on success
	 *
	 * @since   3.1
	 */
	public function uninstall($eid)
	{
		// Load up the extension details
		$extension = Table::getInstance('extension');
		$extension->load($eid);

		// Grab a copy of the client details
		$client = ApplicationHelper::getClientInfo($extension->get('client_id'));

		// Check the element isn't blank to prevent nuking the languages directory...just in case
		$element = $extension->get('element');

		if (empty($element))
		{
			\JLog::add(\JText::_('JLIB_INSTALLER_ERROR_LANG_UNINSTALL_ELEMENT_EMPTY'), \JLog::WARNING, 'jerror');

			return false;
		}

		// Check that the language is not protected, Normally en-GB.
		$protected = $extension->get('protected');

		if ($protected == 1)
		{
			\JLog::add(\JText::_('JLIB_INSTALLER_ERROR_LANG_UNINSTALL_PROTECTED'), \JLog::WARNING, 'jerror');

			return false;
		}

		// Verify that it's not the default language for that client
		$params = ComponentHelper::getParams('com_languages');

		if ($params->get($client->name) === $element)
		{
			\JLog::add(\JText::_('JLIB_INSTALLER_ERROR_LANG_UNINSTALL_DEFAULT'), \JLog::WARNING, 'jerror');

			return false;
		}

		/*
		 * Does this extension have a parent package?
		 * If so, check if the package disallows individual extensions being uninstalled if the package is not being uninstalled
		 */
		if ($extension->package_id && !$this->parent->isPackageUninstall() && !$this->canUninstallPackageChild($extension->package_id))
		{
			\JLog::add(\JText::sprintf('JLIB_INSTALLER_ERROR_CANNOT_UNINSTALL_CHILD_OF_PACKAGE', $extension->name), \JLog::WARNING, 'jerror');

			return false;
		}

		// Construct the path from the client, the language and the extension element name
		$path = $client->path . '/language/' . $element;

		// Get the package manifest object and remove media
		$this->parent->setPath('source', $path);

		// We do findManifest to avoid problem when uninstalling a list of extension: getManifest cache its manifest file
		$this->parent->findManifest();
		$this->setManifest($this->parent->getManifest());
		$this->parent->removeFiles($this->getManifest()->media);

		// Check it exists
		if (!\JFolder::exists($path))
		{
			// If the folder doesn't exist lets just nuke the row as well and presume the user killed it for us
			$extension->delete();
			\JLog::add(\JText::_('JLIB_INSTALLER_ERROR_LANG_UNINSTALL_PATH_EMPTY'), \JLog::WARNING, 'jerror');

			return false;
		}

		if (!\JFolder::delete($path))
		{
			// If deleting failed we'll leave the extension entry in tact just in case
			\JLog::add(\JText::_('JLIB_INSTALLER_ERROR_LANG_UNINSTALL_DIRECTORY'), \JLog::WARNING, 'jerror');

			return false;
		}

		// Remove the extension table entry
		$extension->delete();

		// Setting the language of users which have this language as the default language
		$db = \JFactory::getDbo();
		$query = $db->getQuery(true)
			->from('#__users')
			->select('*');
		$db->setQuery($query);
		$users = $db->loadObjectList();

		if ($client->name === 'administrator')
		{
			$param_name = 'admin_language';
		}
		else
		{
			$param_name = 'language';
		}

		$count = 0;

		foreach ($users as $user)
		{
			$registry = new Registry($user->params);

			if ($registry->get($param_name) === $element)
			{
				$registry->set($param_name, '');
				$query->clear()
					->update('#__users')
					->set('params=' . $db->quote($registry))
					->where('id=' . (int) $user->id);
				$db->setQuery($query);
				$db->execute();
				$count++;
			}
		}

		// Clean installed languages cache.
		\JFactory::getCache()->clean('com_languages');

		if (!empty($count))
		{
			\JLog::add(\JText::plural('JLIB_INSTALLER_NOTICE_LANG_RESET_USERS', $count), \JLog::NOTICE, 'jerror');
		}

		// All done!
		return true;
	}

	/**
	 * Custom discover method
	 * Finds language files
	 *
	 * @return  boolean  True on success
	 *
	 * @since  3.1
	 */
	public function discover()
	{
		$results = array();
		$site_languages = \JFolder::folders(JPATH_SITE . '/language');
		$admin_languages = \JFolder::folders(JPATH_ADMINISTRATOR . '/language');

		foreach ($site_languages as $language)
		{
			if (file_exists(JPATH_SITE . '/language/' . $language . '/' . $language . '.xml'))
			{
				$manifest_details = Installer::parseXMLInstallFile(JPATH_SITE . '/language/' . $language . '/' . $language . '.xml');
				$extension = Table::getInstance('extension');
				$extension->set('type', 'language');
				$extension->set('client_id', 0);
				$extension->set('element', $language);
				$extension->set('folder', '');
				$extension->set('name', $language);
				$extension->set('state', -1);
				$extension->set('manifest_cache', json_encode($manifest_details));
				$extension->set('params', '{}');
				$results[] = $extension;
			}
		}

		foreach ($admin_languages as $language)
		{
			if (file_exists(JPATH_ADMINISTRATOR . '/language/' . $language . '/' . $language . '.xml'))
			{
				$manifest_details = Installer::parseXMLInstallFile(JPATH_ADMINISTRATOR . '/language/' . $language . '/' . $language . '.xml');
				$extension = Table::getInstance('extension');
				$extension->set('type', 'language');
				$extension->set('client_id', 1);
				$extension->set('element', $language);
				$extension->set('folder', '');
				$extension->set('name', $language);
				$extension->set('state', -1);
				$extension->set('manifest_cache', json_encode($manifest_details));
				$extension->set('params', '{}');
				$results[] = $extension;
			}
		}

		return $results;
	}

	/**
	 * Custom discover install method
	 * Basically updates the manifest cache and leaves everything alone
	 *
	 * @return  integer  The extension id
	 *
	 * @since   3.1
	 */
	public function discover_install()
	{
		// Need to find to find where the XML file is since we don't store this normally
		$client = ApplicationHelper::getClientInfo($this->parent->extension->client_id);
		$short_element = $this->parent->extension->element;
		$manifestPath = $client->path . '/language/' . $short_element . '/' . $short_element . '.xml';
		$this->parent->manifest = $this->parent->isManifest($manifestPath);
		$this->parent->setPath('manifest', $manifestPath);
		$this->parent->setPath('source', $client->path . '/language/' . $short_element);
		$this->parent->setPath('extension_root', $this->parent->getPath('source'));
		$manifest_details = Installer::parseXMLInstallFile($this->parent->getPath('manifest'));
		$this->parent->extension->manifest_cache = json_encode($manifest_details);
		$this->parent->extension->state = 0;
		$this->parent->extension->name = $manifest_details['name'];
		$this->parent->extension->enabled = 1;

		// @todo remove code: $this->parent->extension->params = $this->parent->getParams();
		try
		{
			$this->parent->extension->check();
			$this->parent->extension->store();
		}
		catch (\RuntimeException $e)
		{
			\JLog::add(\JText::_('JLIB_INSTALLER_ERROR_LANG_DISCOVER_STORE_DETAILS'), \JLog::WARNING, 'jerror');

			return false;
		}

		// Clean installed languages cache.
		\JFactory::getCache()->clean('com_languages');

		return $this->parent->extension->get('extension_id');
	}

	/**
	 * Refreshes the extension table cache
	 *
	 * @return  boolean result of operation, true if updated, false on failure
	 *
	 * @since   3.1
	 */
	public function refreshManifestCache()
	{
		$client = ApplicationHelper::getClientInfo($this->parent->extension->client_id);
		$manifestPath = $client->path . '/language/' . $this->parent->extension->element . '/' . $this->parent->extension->element . '.xml';
		$this->parent->manifest = $this->parent->isManifest($manifestPath);
		$this->parent->setPath('manifest', $manifestPath);
		$manifest_details = Installer::parseXMLInstallFile($this->parent->getPath('manifest'));
		$this->parent->extension->manifest_cache = json_encode($manifest_details);
		$this->parent->extension->name = $manifest_details['name'];

		if ($this->parent->extension->store())
		{
			return true;
		}
		else
		{
			\JLog::add(\JText::_('JLIB_INSTALLER_ERROR_MOD_REFRESH_MANIFEST_CACHE'), \JLog::WARNING, 'jerror');

			return false;
		}
	}
}