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<?php
/**
 * Upgrade API: Language_Pack_Upgrader class
 *
 * @package WordPress
 * @subpackage Upgrader
 * @since 4.6.0
 */

/**
 * Core class used for updating/installing language packs (translations)
 * for plugins, themes, and core.
 *
 * @since 3.7.0
 * @since 4.6.0 Moved to its own file from wp-admin/includes/class-wp-upgrader.php.
 *
 * @see WP_Upgrader
 */
class Language_Pack_Upgrader extends WP_Upgrader {

/**
	 * Result of the language pack upgrade.
	 *
	 * @since 3.7.0
	 * @var array|WP_Error $result
	 * @see WP_Upgrader::$result
	 */
	public $result;

/**
	 * Whether a bulk upgrade/installation is being performed.
	 *
	 * @since 3.7.0
	 * @var bool $bulk
	 */
	public $bulk = true;

/**
	 * Asynchronously upgrades language packs after other upgrades have been made.
	 *
	 * Hooked to the {@see 'upgrader_process_complete'} action by default.
	 *
	 * @since 3.7.0
	 *
	 * @param false|WP_Upgrader $upgrader Optional. WP_Upgrader instance or false. If `$upgrader` is
	 *                                    a Language_Pack_Upgrader instance, the method will bail to
	 *                                    avoid recursion. Otherwise unused. Default false.
	 */
	public static function async_upgrade( $upgrader = false ) {
		// Avoid recursion.
		if ( $upgrader && $upgrader instanceof Language_Pack_Upgrader ) {
			return;
		}

// Nothing to do?
		$language_updates = wp_get_translation_updates();
		if ( ! $language_updates ) {
			return;
		}

/*
		 * Avoid messing with VCS installations, at least for now.
		 * Noted: this is not the ideal way to accomplish this.
		 */
		$check_vcs = new WP_Automatic_Updater();
		if ( $check_vcs->is_vcs_checkout( WP_CONTENT_DIR ) ) {
			return;
		}

foreach ( $language_updates as $key => $language_update ) {
			$update = ! empty( $language_update->autoupdate );

/**
			 * Filters whether to asynchronously update translation for core, a plugin, or a theme.
			 *
			 * @since 4.0.0
			 *
			 * @param bool   $update          Whether to update.
			 * @param object $language_update The update offer.
			 */
			$update = apply_filters( 'async_update_translation', $update, $language_update );

if ( ! $update ) {
				unset( $language_updates[ $key ] );
			}
		}

if ( empty( $language_updates ) ) {
			return;
		}

// Re-use the automatic upgrader skin if the parent upgrader is using it.
		if ( $upgrader && $upgrader->skin instanceof Automatic_Upgrader_Skin ) {
			$skin = $upgrader->skin;
		} else {
			$skin = new Language_Pack_Upgrader_Skin(
				array(
					'skip_header_footer' => true,
				)
			);
		}

$lp_upgrader = new Language_Pack_Upgrader( $skin );
		$lp_upgrader->bulk_upgrade( $language_updates );
	}

/**
	 * Initializes the upgrade strings.
	 *
	 * @since 3.7.0
	 */
	public function upgrade_strings() {
		$this->strings['starting_upgrade'] = __( 'Some of your translations need updating. Sit tight for a few more seconds while they are updated as well.' );
		$this->strings['up_to_date']       = __( 'Your translations are all up to date.' );
		$this->strings['no_package']       = __( 'Update package not available.' );
		/* translators: %s: Package URL. */
		$this->strings['downloading_package'] = sprintf( __( 'Downloading translation from %s&#8230;' ), '<span class="code pre">%s</span>' );
		$this->strings['unpack_package']      = __( 'Unpacking the update&#8230;' );
		$this->strings['process_failed']      = __( 'Translation update failed.' );
		$this->strings['process_success']     = __( 'Translation updated successfully.' );
		$this->strings['remove_old']          = __( 'Removing the old version of the translation&#8230;' );
		$this->strings['remove_old_failed']   = __( 'Could not remove the old translation.' );
	}

/**
	 * Upgrades a language pack.
	 *
	 * @since 3.7.0
	 *
	 * @param string|false $update Optional. Whether an update offer is available. Default false.
	 * @param array        $args   Optional. Other optional arguments, see
	 *                             Language_Pack_Upgrader::bulk_upgrade(). Default empty array.
	 * @return array|bool|WP_Error The result of the upgrade, or a WP_Error object instead.
	 */
	public function upgrade( $update = false, $args = array() ) {
		if ( $update ) {
			$update = array( $update );
		}

$results = $this->bulk_upgrade( $update, $args );

if ( ! is_array( $results ) ) {
			return $results;
		}

return $results[0];
	}

/**
	 * Upgrades several language packs at once.
	 *
	 * @since 3.7.0
	 *
	 * @global WP_Filesystem_Base $wp_filesystem WordPress filesystem subclass.
	 *
	 * @param object[] $language_updates Optional. Array of language packs to update. See {@see wp_get_translation_updates()}.
	 *                                   Default empty array.
	 * @param array    $args {
	 *     Other arguments for upgrading multiple language packs. Default empty array.
	 *
	 *     @type bool $clear_update_cache Whether to clear the update cache when done.
	 *                                    Default true.
	 * }
	 * @return array|bool|WP_Error Will return an array of results, or true if there are no updates,
	 *                             false or WP_Error for initial errors.
	 */
	public function bulk_upgrade( $language_updates = array(), $args = array() ) {
		global $wp_filesystem;

$defaults    = array(
			'clear_update_cache' => true,
		);
		$parsed_args = wp_parse_args( $args, $defaults );

$this->init();
		$this->upgrade_strings();

if ( ! $language_updates ) {
			$language_updates = wp_get_translation_updates();
		}

if ( empty( $language_updates ) ) {
			$this->skin->header();
			$this->skin->set_result( true );
			$this->skin->feedback( 'up_to_date' );
			$this->skin->bulk_footer();
			$this->skin->footer();
			return true;
		}

if ( 'upgrader_process_complete' === current_filter() ) {
			$this->skin->feedback( 'starting_upgrade' );
		}

// Remove any existing upgrade filters from the plugin/theme upgraders #WP29425 & #WP29230.
		remove_all_filters( 'upgrader_pre_install' );
		remove_all_filters( 'upgrader_clear_destination' );
		remove_all_filters( 'upgrader_post_install' );
		remove_all_filters( 'upgrader_source_selection' );

add_filter( 'upgrader_source_selection', array( $this, 'check_package' ), 10, 2 );

$this->skin->header();

// Connect to the filesystem first.
		$res = $this->fs_connect( array( WP_CONTENT_DIR, WP_LANG_DIR ) );
		if ( ! $res ) {
			$this->skin->footer();
			return false;
		}

$results = array();

$this->update_count   = count( $language_updates );
		$this->update_current = 0;

/*
		 * The filesystem's mkdir() is not recursive. Make sure WP_LANG_DIR exists,
		 * as we then may need to create a /plugins or /themes directory inside of it.
		 */
		$remote_destination = $wp_filesystem->find_folder( WP_LANG_DIR );
		if ( ! $wp_filesystem->exists( $remote_destination ) ) {
			if ( ! $wp_filesystem->mkdir( $remote_destination, FS_CHMOD_DIR ) ) {
				return new WP_Error( 'mkdir_failed_lang_dir', $this->strings['mkdir_failed'], $remote_destination );
			}
		}

$language_updates_results = array();

foreach ( $language_updates as $language_update ) {

$this->skin->language_update = $language_update;

$destination = WP_LANG_DIR;
			if ( 'plugin' === $language_update->type ) {
				$destination .= '/plugins';
			} elseif ( 'theme' === $language_update->type ) {
				$destination .= '/themes';
			}

++$this->update_current;

$options = array(
				'package'                     => $language_update->package,
				'destination'                 => $destination,
				'clear_destination'           => true,
				'abort_if_destination_exists' => false, // We expect the destination to exist.
				'clear_working'               => true,
				'is_multi'                    => true,
				'hook_extra'                  => array(
					'language_update_type' => $language_update->type,
					'language_update'      => $language_update,
				),
			);

$result = $this->run( $options );

$results[] = $this->result;

// Prevent credentials auth screen from displaying multiple times.
			if ( false === $result ) {
				break;
			}

$language_updates_results[] = array(
				'language' => $language_update->language,
				'type'     => $language_update->type,
				'slug'     => isset( $language_update->slug ) ? $language_update->slug : 'default',
				'version'  => $language_update->version,
			);
		}

// Remove upgrade hooks which are not required for translation updates.
		remove_action( 'upgrader_process_complete', array( 'Language_Pack_Upgrader', 'async_upgrade' ), 20 );
		remove_action( 'upgrader_process_complete', 'wp_version_check' );
		remove_action( 'upgrader_process_complete', 'wp_update_plugins' );
		remove_action( 'upgrader_process_complete', 'wp_update_themes' );

/** This action is documented in wp-admin/includes/class-wp-upgrader.php */
		do_action(
			'upgrader_process_complete',
			$this,
			array(
				'action'       => 'update',
				'type'         => 'translation',
				'bulk'         => true,
				'translations' => $language_updates_results,
			)
		);

// Re-add upgrade hooks.
		add_action( 'upgrader_process_complete', array( 'Language_Pack_Upgrader', 'async_upgrade' ), 20 );
		add_action( 'upgrader_process_complete', 'wp_version_check', 10, 0 );
		add_action( 'upgrader_process_complete', 'wp_update_plugins', 10, 0 );
		add_action( 'upgrader_process_complete', 'wp_update_themes', 10, 0 );

$this->skin->bulk_footer();

$this->skin->footer();

// Clean up our hooks, in case something else does an upgrade on this connection.
		remove_filter( 'upgrader_source_selection', array( $this, 'check_package' ) );

if ( $parsed_args['clear_update_cache'] ) {
			wp_clean_update_cache();
		}

return $results;
	}

/**
	 * Checks that the package source contains .mo and .po files.
	 *
	 * Hooked to the {@see 'upgrader_source_selection'} filter by
	 * Language_Pack_Upgrader::bulk_upgrade().
	 *
	 * @since 3.7.0
	 *
	 * @global WP_Filesystem_Base $wp_filesystem WordPress filesystem subclass.
	 *
	 * @param string|WP_Error $source        The path to the downloaded package source.
	 * @param string          $remote_source Remote file source location.
	 * @return string|WP_Error The source as passed, or a WP_Error object on failure.
	 */
	public function check_package( $source, $remote_source ) {
		global $wp_filesystem;

if ( is_wp_error( $source ) ) {
			return $source;
		}

// Check that the folder contains a valid language.
		$files = $wp_filesystem->dirlist( $remote_source );

// Check to see if the expected files exist in the folder.
		$po  = false;
		$mo  = false;
		$php = false;
		foreach ( (array) $files as $file => $filedata ) {
			if ( str_ends_with( $file, '.po' ) ) {
				$po = true;
			} elseif ( str_ends_with( $file, '.mo' ) ) {
				$mo = true;
			} elseif ( str_ends_with( $file, '.l10n.php' ) ) {
				$php = true;
			}
		}

if ( $php ) {
			return $source;
		}

if ( ! $mo || ! $po ) {
			return new WP_Error(
				'incompatible_archive_pomo',
				$this->strings['incompatible_archive'],
				sprintf(
					/* translators: 1: .po, 2: .mo, 3: .l10n.php */
					__( 'The language pack is missing either the %1$s, %2$s, or %3$s files.' ),
					'<code>.po</code>',
					'<code>.mo</code>',
					'<code>.l10n.php</code>'
				)
			);
		}

return $source;
	}

/**
	 * Gets the name of an item being updated.
	 *
	 * @since 3.7.0
	 *
	 * @param object $update The data for an update.
	 * @return string The name of the item being updated.
	 */
	public function get_name_for_update( $update ) {
		switch ( $update->type ) {
			case 'core':
				return 'WordPress'; // Not translated.

case 'theme':
				$theme = wp_get_theme( $update->slug );
				if ( $theme->exists() ) {
					return $theme->Get( 'Name' );
				}
				break;
			case 'plugin':
				$plugin_data = get_plugins( '/' . $update->slug );
				$plugin_data = reset( $plugin_data );
				if ( $plugin_data ) {
					return $plugin_data['Name'];
				}
				break;
		}
		return '';
	}

/**
	 * Clears existing translations where this item is going to be installed into.
	 *
	 * @since 5.1.0
	 *
	 * @global WP_Filesystem_Base $wp_filesystem WordPress filesystem subclass.
	 *
	 * @param string $remote_destination The location on the remote filesystem to be cleared.
	 * @return bool|WP_Error True upon success, WP_Error on failure.
	 */
	public function clear_destination( $remote_destination ) {
		global $wp_filesystem;

$language_update    = $this->skin->language_update;
		$language_directory = WP_LANG_DIR . '/'; // Local path for use with glob().

if ( 'core' === $language_update->type ) {
			$files = array(
				$remote_destination . $language_update->language . '.po',
				$remote_destination . $language_update->language . '.mo',
				$remote_destination . $language_update->language . '.l10n.php',
				$remote_destination . 'admin-' . $language_update->language . '.po',
				$remote_destination . 'admin-' . $language_update->language . '.mo',
				$remote_destination . 'admin-' . $language_update->language . '.l10n.php',
				$remote_destination . 'admin-network-' . $language_update->language . '.po',
				$remote_destination . 'admin-network-' . $language_update->language . '.mo',
				$remote_destination . 'admin-network-' . $language_update->language . '.l10n.php',
				$remote_destination . 'continents-cities-' . $language_update->language . '.po',
				$remote_destination . 'continents-cities-' . $language_update->language . '.mo',
				$remote_destination . 'continents-cities-' . $language_update->language . '.l10n.php',
			);

$json_translation_files = glob( $language_directory . $language_update->language . '-*.json' );
			if ( $json_translation_files ) {
				foreach ( $json_translation_files as $json_translation_file ) {
					$files[] = str_replace( $language_directory, $remote_destination, $json_translation_file );
				}
			}
		} else {
			$files = array(
				$remote_destination . $language_update->slug . '-' . $language_update->language . '.po',
				$remote_destination . $language_update->slug . '-' . $language_update->language . '.mo',
				$remote_destination . $language_update->slug . '-' . $language_update->language . '.l10n.php',
			);

$language_directory     = $language_directory . $language_update->type . 's/';
			$json_translation_files = glob( $language_directory . $language_update->slug . '-' . $language_update->language . '-*.json' );
			if ( $json_translation_files ) {
				foreach ( $json_translation_files as $json_translation_file ) {
					$files[] = str_replace( $language_directory, $remote_destination, $json_translation_file );
				}
			}
		}

$files = array_filter( $files, array( $wp_filesystem, 'exists' ) );

// No files to delete.
		if ( ! $files ) {
			return true;
		}

// Check all files are writable before attempting to clear the destination.
		$unwritable_files = array();

// Check writability.
		foreach ( $files as $file ) {
			if ( ! $wp_filesystem->is_writable( $file ) ) {
				// Attempt to alter permissions to allow writes and try again.
				$wp_filesystem->chmod( $file, FS_CHMOD_FILE );
				if ( ! $wp_filesystem->is_writable( $file ) ) {
					$unwritable_files[] = $file;
				}
			}
		}

if ( ! empty( $unwritable_files ) ) {
			return new WP_Error( 'files_not_writable', $this->strings['files_not_writable'], implode( ', ', $unwritable_files ) );
		}

foreach ( $files as $file ) {
			if ( ! $wp_filesystem->delete( $file ) ) {
				return new WP_Error( 'remove_old_failed', $this->strings['remove_old_failed'] );
			}
		}

return true;
	}
}

Nama File / Folder	Size	Action
admin-filters.php	7.846KB	Edit File Delete File Rename
admin.php	3.543KB	Edit File Delete File Rename
ajax-actions.php	148.075KB	Edit File Delete File Rename
bookmark.php	11.45KB	Edit File Delete File Rename
class-automatic-upgrader-skin.php	3.577KB	Edit File Delete File Rename
class-bulk-plugin-upgrader-skin.php	2.529KB	Edit File Delete File Rename
class-bulk-upgrader-skin.php	6.595KB	Edit File Delete File Rename
class-custom-background.php	21.143KB	Edit File Delete File Rename
class-custom-image-header.php	48.141KB	Edit File Delete File Rename
class-file-upload-upgrader.php	4.065KB	Edit File Delete File Rename
class-ftp-pure.php	5.299KB	Edit File Delete File Rename
class-ftp-sockets.php	8.28KB	Edit File Delete File Rename
class-ftp.php	26.729KB	Edit File Delete File Rename
class-language-pack-upgrader-skin.php	2.803KB	Edit File Delete File Rename
class-language-pack-upgrader.php	15.196KB	Edit File Delete File Rename
class-pclzip.php	192.085KB	Edit File Delete File Rename
class-plugin-installer-skin.php	11.771KB	Edit File Delete File Rename
class-plugin-upgrader-skin.php	3.201KB	Edit File Delete File Rename
class-theme-installer-skin.php	12.444KB	Edit File Delete File Rename
class-theme-upgrader.php	26.076KB	Edit File Delete File Rename
class-walker-category-checklist.php	4.972KB	Edit File Delete File Rename
class-walker-nav-menu-edit.php	13.848KB	Edit File Delete File Rename
class-wp-ajax-upgrader-skin.php	4.095KB	Edit File Delete File Rename
class-wp-application-passwords-list-table.php	6.786KB	Edit File Delete File Rename
class-wp-automatic-updater.php	60.451KB	Edit File Delete File Rename
class-wp-comments-list-table.php	32.281KB	Edit File Delete File Rename
class-wp-community-events.php	18.329KB	Edit File Delete File Rename
class-wp-debug-data.php	65.058KB	Edit File Delete File Rename
class-wp-filesystem-base.php	23.838KB	Edit File Delete File Rename
class-wp-filesystem-direct.php	17.718KB	Edit File Delete File Rename
class-wp-filesystem-ftpext.php	22.56KB	Edit File Delete File Rename
class-wp-filesystem-ftpsockets.php	18.046KB	Edit File Delete File Rename
class-wp-filesystem-ssh2.php	22.764KB	Edit File Delete File Rename
class-wp-importer.php	7.323KB	Edit File Delete File Rename
class-wp-internal-pointers.php	4.47KB	Edit File Delete File Rename
class-wp-links-list-table.php	9.024KB	Edit File Delete File Rename
class-wp-list-table-compat.php	1.462KB	Edit File Delete File Rename
class-wp-list-table.php	51.666KB	Edit File Delete File Rename
class-wp-media-list-table.php	25.292KB	Edit File Delete File Rename
class-wp-ms-sites-list-table.php	21.503KB	Edit File Delete File Rename
class-wp-ms-themes-list-table.php	27.771KB	Edit File Delete File Rename
class-wp-ms-users-list-table.php	15.351KB	Edit File Delete File Rename
class-wp-plugin-install-list-table.php	24.205KB	Edit File Delete File Rename
class-wp-plugins-list-table.php	56.432KB	Edit File Delete File Rename
class-wp-post-comments-list-table.php	1.419KB	Edit File Delete File Rename
class-wp-posts-list-table.php	62.711KB	Edit File Delete File Rename
class-wp-privacy-data-export-requests-list-table.php	5.433KB	Edit File Delete File Rename
class-wp-privacy-data-removal-requests-list-table.php	5.581KB	Edit File Delete File Rename
class-wp-privacy-policy-content.php	31.861KB	Edit File Delete File Rename
class-wp-screen.php	36.452KB	Edit File Delete File Rename
class-wp-site-health-auto-updates.php	14.001KB	Edit File Delete File Rename
class-wp-site-health.php	119.494KB	Edit File Delete File Rename
class-wp-site-icon.php	6.264KB	Edit File Delete File Rename
class-wp-terms-list-table.php	20.686KB	Edit File Delete File Rename
class-wp-theme-install-list-table.php	15.233KB	Edit File Delete File Rename
class-wp-themes-list-table.php	10.106KB	Edit File Delete File Rename
class-wp-upgrader-skin.php	6.943KB	Edit File Delete File Rename
class-wp-upgrader-skins.php	1.442KB	Edit File Delete File Rename
class-wp-upgrader.php	46.884KB	Edit File Delete File Rename
class-wp-users-list-table.php	18.611KB	Edit File Delete File Rename
continents-cities.php	20.059KB	Edit File Delete File Rename
credits.php	5.732KB	Edit File Delete File Rename
dashboard.php	68.076KB	Edit File Delete File Rename
deprecated.php	40.797KB	Edit File Delete File Rename
edit-tag-messages.php	1.443KB	Edit File Delete File Rename
error_log	14.645KB	Edit File Delete File Rename
file.php	95.868KB	Edit File Delete File Rename
image-edit.php	42.854KB	Edit File Delete File Rename
image.php	41.664KB	Edit File Delete File Rename
import.php	6.462KB	Edit File Delete File Rename
media.php	116.317KB	Edit File Delete File Rename
misc.php	44.71KB	Edit File Delete File Rename
ms-admin-filters.php	1.266KB	Edit File Delete File Rename
ms-deprecated.php	3.682KB	Edit File Delete File Rename
nav-menu.php	47.892KB	Edit File Delete File Rename
noop.php	1.121KB	Edit File Delete File Rename
options.php	4.151KB	Edit File Delete File Rename
plugin-install.php	38.549KB	Edit File Delete File Rename
plugin.php	90.747KB	Edit File Delete File Rename
post.php	80.276KB	Edit File Delete File Rename
privacy-tools.php	32.678KB	Edit File Delete File Rename
schema.php	41.862KB	Edit File Delete File Rename
template.php	96.22KB	Edit File Delete File Rename
theme-install.php	6.826KB	Edit File Delete File Rename
translation-install.php	10.815KB	Edit File Delete File Rename
update-core.php	68.502KB	Edit File Delete File Rename
upgrade.php	112.091KB	Edit File Delete File Rename
user.php	22.98KB	Edit File Delete File Rename
widgets.php	10.656KB	Edit File Delete File Rename