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<?php
/**
* Upgrade API: Theme_Upgrader class
*
* @package WordPress
* @subpackage Upgrader
* @since 4.6.0
*/
/**
* Core class used for upgrading/installing themes.
*
* It is designed to upgrade/install themes from a local zip, remote zip URL,
* or uploaded zip file.
*
* @since 2.8.0
* @since 4.6.0 Moved to its own file from wp-admin/includes/class-wp-upgrader.php.
*
* @see WP_Upgrader
*/
class Theme_Upgrader extends WP_Upgrader {
/**
* Result of the theme upgrade offer.
*
* @since 2.8.0
* @var array|WP_Error $result
* @see WP_Upgrader::$result
*/
public $result;
/**
* Whether multiple themes are being upgraded/installed in bulk.
*
* @since 2.9.0
* @var bool $bulk
*/
public $bulk = false;
/**
* New theme info.
*
* @since 5.5.0
* @var array $new_theme_data
*
* @see check_package()
*/
public $new_theme_data = array();
/**
* Initializes the upgrade strings.
*
* @since 2.8.0
*/
public function upgrade_strings() {
$this->strings['up_to_date'] = __( 'The theme is at the latest version.' );
$this->strings['no_package'] = __( 'Update package not available.' );
/* translators: %s: Package URL. */
$this->strings['downloading_package'] = sprintf( __( 'Downloading update from %s…' ), '<span class="code pre">%s</span>' );
$this->strings['unpack_package'] = __( 'Unpacking the update…' );
$this->strings['remove_old'] = __( 'Removing the old version of the theme…' );
$this->strings['remove_old_failed'] = __( 'Could not remove the old theme.' );
$this->strings['process_failed'] = __( 'Theme update failed.' );
$this->strings['process_success'] = __( 'Theme updated successfully.' );
}
/**
* Initializes the installation strings.
*
* @since 2.8.0
*/
public function install_strings() {
$this->strings['no_package'] = __( 'Installation package not available.' );
/* translators: %s: Package URL. */
$this->strings['downloading_package'] = sprintf( __( 'Downloading installation package from %s…' ), '<span class="code pre">%s</span>' );
$this->strings['unpack_package'] = __( 'Unpacking the package…' );
$this->strings['installing_package'] = __( 'Installing the theme…' );
$this->strings['remove_old'] = __( 'Removing the old version of the theme…' );
$this->strings['remove_old_failed'] = __( 'Could not remove the old theme.' );
$this->strings['no_files'] = __( 'The theme contains no files.' );
$this->strings['process_failed'] = __( 'Theme installation failed.' );
$this->strings['process_success'] = __( 'Theme installed successfully.' );
/* translators: 1: Theme name, 2: Theme version. */
$this->strings['process_success_specific'] = __( 'Successfully installed the theme <strong>%1$s %2$s</strong>.' );
$this->strings['parent_theme_search'] = __( 'This theme requires a parent theme. Checking if it is installed…' );
/* translators: 1: Theme name, 2: Theme version. */
$this->strings['parent_theme_prepare_install'] = __( 'Preparing to install <strong>%1$s %2$s</strong>…' );
/* translators: 1: Theme name, 2: Theme version. */
$this->strings['parent_theme_currently_installed'] = __( 'The parent theme, <strong>%1$s %2$s</strong>, is currently installed.' );
/* translators: 1: Theme name, 2: Theme version. */
$this->strings['parent_theme_install_success'] = __( 'Successfully installed the parent theme, <strong>%1$s %2$s</strong>.' );
/* translators: %s: Theme name. */
$this->strings['parent_theme_not_found'] = sprintf( __( '<strong>The parent theme could not be found.</strong> You will need to install the parent theme, %s, before you can use this child theme.' ), '<strong>%s</strong>' );
/* translators: %s: Theme error. */
$this->strings['current_theme_has_errors'] = __( 'The active theme has the following error: "%s".' );
if ( ! empty( $this->skin->overwrite ) ) {
if ( 'update-theme' === $this->skin->overwrite ) {
$this->strings['installing_package'] = __( 'Updating the theme…' );
$this->strings['process_failed'] = __( 'Theme update failed.' );
$this->strings['process_success'] = __( 'Theme updated successfully.' );
}
if ( 'downgrade-theme' === $this->skin->overwrite ) {
$this->strings['installing_package'] = __( 'Downgrading the theme…' );
$this->strings['process_failed'] = __( 'Theme downgrade failed.' );
$this->strings['process_success'] = __( 'Theme downgraded successfully.' );
}
}
}
/**
* Checks if a child theme is being installed and its parent also needs to be installed.
*
* Hooked to the {@see 'upgrader_post_install'} filter by Theme_Upgrader::install().
*
* @since 3.4.0
*
* @param bool $install_result
* @param array $hook_extra
* @param array $child_result
* @return bool
*/
public function check_parent_theme_filter( $install_result, $hook_extra, $child_result ) {
// Check to see if we need to install a parent theme.
$theme_info = $this->theme_info();
if ( ! $theme_info->parent() ) {
return $install_result;
}
$this->skin->feedback( 'parent_theme_search' );
if ( ! $theme_info->parent()->errors() ) {
$this->skin->feedback( 'parent_theme_currently_installed', $theme_info->parent()->display( 'Name' ), $theme_info->parent()->display( 'Version' ) );
// We already have the theme, fall through.
return $install_result;
}
// We don't have the parent theme, let's install it.
$api = themes_api(
'theme_information',
array(
'slug' => $theme_info->get( 'Template' ),
'fields' => array(
'sections' => false,
'tags' => false,
),
)
); // Save on a bit of bandwidth.
if ( ! $api || is_wp_error( $api ) ) {
$this->skin->feedback( 'parent_theme_not_found', $theme_info->get( 'Template' ) );
// Don't show activate or preview actions after installation.
add_filter( 'install_theme_complete_actions', array( $this, 'hide_activate_preview_actions' ) );
return $install_result;
}
// Backup required data we're going to override:
$child_api = $this->skin->api;
$child_success_message = $this->strings['process_success'];
// Override them.
$this->skin->api = $api;
$this->strings['process_success_specific'] = $this->strings['parent_theme_install_success'];
$this->skin->feedback( 'parent_theme_prepare_install', $api->name, $api->version );
add_filter( 'install_theme_complete_actions', '__return_false', 999 ); // Don't show any actions after installing the theme.
// Install the parent theme.
$parent_result = $this->run(
array(
'package' => $api->download_link,
'destination' => get_theme_root(),
'clear_destination' => false, // Do not overwrite files.
'clear_working' => true,
)
);
if ( is_wp_error( $parent_result ) ) {
add_filter( 'install_theme_complete_actions', array( $this, 'hide_activate_preview_actions' ) );
}
// Start cleaning up after the parent's installation.
remove_filter( 'install_theme_complete_actions', '__return_false', 999 );
// Reset child's result and data.
$this->result = $child_result;
$this->skin->api = $child_api;
$this->strings['process_success'] = $child_success_message;
return $install_result;
}
/**
* Don't display the activate and preview actions to the user.
*
* Hooked to the {@see 'install_theme_complete_actions'} filter by
* Theme_Upgrader::check_parent_theme_filter() when installing
* a child theme and installing the parent theme fails.
*
* @since 3.4.0
*
* @param array $actions Preview actions.
* @return array
*/
public function hide_activate_preview_actions( $actions ) {
unset( $actions['activate'], $actions['preview'] );
return $actions;
}
/**
* Install a theme package.
*
* @since 2.8.0
* @since 3.7.0 The `$args` parameter was added, making clearing the update cache optional.
*
* @param string $package The full local path or URI of the package.
* @param array $args {
* Optional. Other arguments for installing a theme package. Default empty array.
*
* @type bool $clear_update_cache Whether to clear the updates cache if successful.
* Default true.
* }
*
* @return bool|WP_Error True if the installation was successful, false or a WP_Error object otherwise.
*/
public function install( $package, $args = array() ) {
$defaults = array(
'clear_update_cache' => true,
'overwrite_package' => false, // Do not overwrite files.
);
$parsed_args = wp_parse_args( $args, $defaults );
$this->init();
$this->install_strings();
add_filter( 'upgrader_source_selection', array( $this, 'check_package' ) );
add_filter( 'upgrader_post_install', array( $this, 'check_parent_theme_filter' ), 10, 3 );
if ( $parsed_args['clear_update_cache'] ) {
// Clear cache so wp_update_themes() knows about the new theme.
add_action( 'upgrader_process_complete', 'wp_clean_themes_cache', 9, 0 );
}
$this->run(
array(
'package' => $package,
'destination' => get_theme_root(),
'clear_destination' => $parsed_args['overwrite_package'],
'clear_working' => true,
'hook_extra' => array(
'type' => 'theme',
'action' => 'install',
),
)
);
remove_action( 'upgrader_process_complete', 'wp_clean_themes_cache', 9 );
remove_filter( 'upgrader_source_selection', array( $this, 'check_package' ) );
remove_filter( 'upgrader_post_install', array( $this, 'check_parent_theme_filter' ) );
if ( ! $this->result || is_wp_error( $this->result ) ) {
return $this->result;
}
// Refresh the Theme Update information.
wp_clean_themes_cache( $parsed_args['clear_update_cache'] );
if ( $parsed_args['overwrite_package'] ) {
/** This action is documented in wp-admin/includes/class-plugin-upgrader.php */
do_action( 'upgrader_overwrote_package', $package, $this->new_theme_data, 'theme' );
}
return true;
}
/**
* Upgrades a theme.
*
* @since 2.8.0
* @since 3.7.0 The `$args` parameter was added, making clearing the update cache optional.
*
* @param string $theme The theme slug.
* @param array $args {
* Optional. Other arguments for upgrading a theme. Default empty array.
*
* @type bool $clear_update_cache Whether to clear the update cache if successful.
* Default true.
* }
* @return bool|WP_Error True if the upgrade was successful, false or a WP_Error object otherwise.
*/
public function upgrade( $theme, $args = array() ) {
$defaults = array(
'clear_update_cache' => true,
);
$parsed_args = wp_parse_args( $args, $defaults );
$this->init();
$this->upgrade_strings();
// Is an update available?
$current = get_site_transient( 'update_themes' );
if ( ! isset( $current->response[ $theme ] ) ) {
$this->skin->before();
$this->skin->set_result( false );
$this->skin->error( 'up_to_date' );
$this->skin->after();
return false;
}
$r = $current->response[ $theme ];
add_filter( 'upgrader_pre_install', array( $this, 'current_before' ), 10, 2 );
add_filter( 'upgrader_post_install', array( $this, 'current_after' ), 10, 2 );
add_filter( 'upgrader_clear_destination', array( $this, 'delete_old_theme' ), 10, 4 );
if ( $parsed_args['clear_update_cache'] ) {
// Clear cache so wp_update_themes() knows about the new theme.
add_action( 'upgrader_process_complete', 'wp_clean_themes_cache', 9, 0 );
}
$this->run(
array(
'package' => $r['package'],
'destination' => get_theme_root( $theme ),
'clear_destination' => true,
'clear_working' => true,
'hook_extra' => array(
'theme' => $theme,
'type' => 'theme',
'action' => 'update',
'temp_backup' => array(
'slug' => $theme,
'src' => get_theme_root( $theme ),
'dir' => 'themes',
),
),
)
);
remove_action( 'upgrader_process_complete', 'wp_clean_themes_cache', 9 );
remove_filter( 'upgrader_pre_install', array( $this, 'current_before' ) );
remove_filter( 'upgrader_post_install', array( $this, 'current_after' ) );
remove_filter( 'upgrader_clear_destination', array( $this, 'delete_old_theme' ) );
if ( ! $this->result || is_wp_error( $this->result ) ) {
return $this->result;
}
wp_clean_themes_cache( $parsed_args['clear_update_cache'] );
/*
* Ensure any future auto-update failures trigger a failure email by removing
* the last failure notification from the list when themes update successfully.
*/
$past_failure_emails = get_option( 'auto_plugin_theme_update_emails', array() );
if ( isset( $past_failure_emails[ $theme ] ) ) {
unset( $past_failure_emails[ $theme ] );
update_option( 'auto_plugin_theme_update_emails', $past_failure_emails );
}
return true;
}
/**
* Upgrades several themes at once.
*
* @since 3.0.0
* @since 3.7.0 The `$args` parameter was added, making clearing the update cache optional.
*
* @global string $wp_version The WordPress version string.
*
* @param string[] $themes Array of the theme slugs.
* @param array $args {
* Optional. Other arguments for upgrading several themes at once. Default empty array.
*
* @type bool $clear_update_cache Whether to clear the update cache if successful.
* Default true.
* }
* @return array[]|false An array of results, or false if unable to connect to the filesystem.
*/
public function bulk_upgrade( $themes, $args = array() ) {
global $wp_version;
$defaults = array(
'clear_update_cache' => true,
);
$parsed_args = wp_parse_args( $args, $defaults );
$this->init();
$this->bulk = true;
$this->upgrade_strings();
$current = get_site_transient( 'update_themes' );
add_filter( 'upgrader_pre_install', array( $this, 'current_before' ), 10, 2 );
add_filter( 'upgrader_post_install', array( $this, 'current_after' ), 10, 2 );
add_filter( 'upgrader_clear_destination', array( $this, 'delete_old_theme' ), 10, 4 );
$this->skin->header();
// Connect to the filesystem first.
$res = $this->fs_connect( array( WP_CONTENT_DIR ) );
if ( ! $res ) {
$this->skin->footer();
return false;
}
$this->skin->bulk_header();
/*
* Only start maintenance mode if:
* - running Multisite and there are one or more themes specified, OR
* - a theme with an update available is currently in use.
* @todo For multisite, maintenance mode should only kick in for individual sites if at all possible.
*/
$maintenance = ( is_multisite() && ! empty( $themes ) );
foreach ( $themes as $theme ) {
$maintenance = $maintenance || get_stylesheet() === $theme || get_template() === $theme;
}
if ( $maintenance ) {
$this->maintenance_mode( true );
}
$results = array();
$this->update_count = count( $themes );
$this->update_current = 0;
foreach ( $themes as $theme ) {
++$this->update_current;
$this->skin->theme_info = $this->theme_info( $theme );
if ( ! isset( $current->response[ $theme ] ) ) {
$this->skin->set_result( true );
$this->skin->before();
$this->skin->feedback( 'up_to_date' );
$this->skin->after();
$results[ $theme ] = true;
continue;
}
// Get the URL to the zip file.
$r = $current->response[ $theme ];
if ( isset( $r['requires'] ) && ! is_wp_version_compatible( $r['requires'] ) ) {
$result = new WP_Error(
'incompatible_wp_required_version',
sprintf(
/* translators: 1: Current WordPress version, 2: WordPress version required by the new theme version. */
__( 'Your WordPress version is %1$s, however the new theme version requires %2$s.' ),
$wp_version,
$r['requires']
)
);
$this->skin->before( $result );
$this->skin->error( $result );
$this->skin->after();
} elseif ( isset( $r['requires_php'] ) && ! is_php_version_compatible( $r['requires_php'] ) ) {
$result = new WP_Error(
'incompatible_php_required_version',
sprintf(
/* translators: 1: Current PHP version, 2: PHP version required by the new theme version. */
__( 'The PHP version on your server is %1$s, however the new theme version requires %2$s.' ),
PHP_VERSION,
$r['requires_php']
)
);
$this->skin->before( $result );
$this->skin->error( $result );
$this->skin->after();
} else {
add_filter( 'upgrader_source_selection', array( $this, 'check_package' ) );
$result = $this->run(
array(
'package' => $r['package'],
'destination' => get_theme_root( $theme ),
'clear_destination' => true,
'clear_working' => true,
'is_multi' => true,
'hook_extra' => array(
'theme' => $theme,
'temp_backup' => array(
'slug' => $theme,
'src' => get_theme_root( $theme ),
'dir' => 'themes',
),
),
)
);
remove_filter( 'upgrader_source_selection', array( $this, 'check_package' ) );
}
$results[ $theme ] = $result;
// Prevent credentials auth screen from displaying multiple times.
if ( false === $result ) {
break;
}
} // End foreach $themes.
$this->maintenance_mode( false );
// Refresh the Theme Update information.
wp_clean_themes_cache( $parsed_args['clear_update_cache'] );
/** This action is documented in wp-admin/includes/class-wp-upgrader.php */
do_action(
'upgrader_process_complete',
$this,
array(
'action' => 'update',
'type' => 'theme',
'bulk' => true,
'themes' => $themes,
)
);
$this->skin->bulk_footer();
$this->skin->footer();
// Cleanup our hooks, in case something else does an upgrade on this connection.
remove_filter( 'upgrader_pre_install', array( $this, 'current_before' ) );
remove_filter( 'upgrader_post_install', array( $this, 'current_after' ) );
remove_filter( 'upgrader_clear_destination', array( $this, 'delete_old_theme' ) );
/*
* Ensure any future auto-update failures trigger a failure email by removing
* the last failure notification from the list when themes update successfully.
*/
$past_failure_emails = get_option( 'auto_plugin_theme_update_emails', array() );
foreach ( $results as $theme => $result ) {
// Maintain last failure notification when themes failed to update manually.
if ( ! $result || is_wp_error( $result ) || ! isset( $past_failure_emails[ $theme ] ) ) {
continue;
}
unset( $past_failure_emails[ $theme ] );
}
update_option( 'auto_plugin_theme_update_emails', $past_failure_emails );
return $results;
}
/**
* Checks that the package source contains a valid theme.
*
* Hooked to the {@see 'upgrader_source_selection'} filter by Theme_Upgrader::install().
*
* @since 3.3.0
*
* @global WP_Filesystem_Base $wp_filesystem WordPress filesystem subclass.
* @global string $wp_version The WordPress version string.
*
* @param string $source The path to the downloaded package source.
* @return string|WP_Error The source as passed, or a WP_Error object on failure.
*/
public function check_package( $source ) {
global $wp_filesystem, $wp_version;
$this->new_theme_data = array();
if ( is_wp_error( $source ) ) {
return $source;
}
// Check that the folder contains a valid theme.
$working_directory = str_replace( $wp_filesystem->wp_content_dir(), trailingslashit( WP_CONTENT_DIR ), $source );
if ( ! is_dir( $working_directory ) ) { // Confidence check, if the above fails, let's not prevent installation.
return $source;
}
// A proper archive should have a style.css file in the single subdirectory.
if ( ! file_exists( $working_directory . 'style.css' ) ) {
return new WP_Error(
'incompatible_archive_theme_no_style',
$this->strings['incompatible_archive'],
sprintf(
/* translators: %s: style.css */
__( 'The theme is missing the %s stylesheet.' ),
'<code>style.css</code>'
)
);
}
// All these headers are needed on Theme_Installer_Skin::do_overwrite().
$info = get_file_data(
$working_directory . 'style.css',
array(
'Name' => 'Theme Name',
'Version' => 'Version',
'Author' => 'Author',
'Template' => 'Template',
'RequiresWP' => 'Requires at least',
'RequiresPHP' => 'Requires PHP',
)
);
if ( empty( $info['Name'] ) ) {
return new WP_Error(
'incompatible_archive_theme_no_name',
$this->strings['incompatible_archive'],
sprintf(
/* translators: %s: style.css */
__( 'The %s stylesheet does not contain a valid theme header.' ),
'<code>style.css</code>'
)
);
}
/*
* Parent themes must contain an index file:
* - classic themes require /index.php
* - block themes require /templates/index.html or block-templates/index.html (deprecated 5.9.0).
*/
if (
empty( $info['Template'] ) &&
! file_exists( $working_directory . 'index.php' ) &&
! file_exists( $working_directory . 'templates/index.html' ) &&
! file_exists( $working_directory . 'block-templates/index.html' )
) {
return new WP_Error(
'incompatible_archive_theme_no_index',
$this->strings['incompatible_archive'],
sprintf(
/* translators: 1: templates/index.html, 2: index.php, 3: Documentation URL, 4: Template, 5: style.css */
__( 'Template is missing. Standalone themes need to have a %1$s or %2$s template file. <a href="%3$s">Child themes</a> need to have a %4$s header in the %5$s stylesheet.' ),
'<code>templates/index.html</code>',
'<code>index.php</code>',
__( 'https://developer.wordpress.org/themes/advanced-topics/child-themes/' ),
'<code>Template</code>',
'<code>style.css</code>'
)
);
}
$requires_php = isset( $info['RequiresPHP'] ) ? $info['RequiresPHP'] : null;
$requires_wp = isset( $info['RequiresWP'] ) ? $info['RequiresWP'] : null;
if ( ! is_php_version_compatible( $requires_php ) ) {
$error = sprintf(
/* translators: 1: Current PHP version, 2: Version required by the uploaded theme. */
__( 'The PHP version on your server is %1$s, however the uploaded theme requires %2$s.' ),
PHP_VERSION,
$requires_php
);
return new WP_Error( 'incompatible_php_required_version', $this->strings['incompatible_archive'], $error );
}
if ( ! is_wp_version_compatible( $requires_wp ) ) {
$error = sprintf(
/* translators: 1: Current WordPress version, 2: Version required by the uploaded theme. */
__( 'Your WordPress version is %1$s, however the uploaded theme requires %2$s.' ),
$wp_version,
$requires_wp
);
return new WP_Error( 'incompatible_wp_required_version', $this->strings['incompatible_archive'], $error );
}
$this->new_theme_data = $info;
return $source;
}
/**
* Turns on maintenance mode before attempting to upgrade the active theme.
*
* Hooked to the {@see 'upgrader_pre_install'} filter by Theme_Upgrader::upgrade() and
* Theme_Upgrader::bulk_upgrade().
*
* @since 2.8.0
*
* @param bool|WP_Error $response The installation response before the installation has started.
* @param array $theme Theme arguments.
* @return bool|WP_Error The original `$response` parameter or WP_Error.
*/
public function current_before( $response, $theme ) {
if ( is_wp_error( $response ) ) {
return $response;
}
$theme = isset( $theme['theme'] ) ? $theme['theme'] : '';
// Only run if active theme.
if ( get_stylesheet() !== $theme ) {
return $response;
}
// Change to maintenance mode. Bulk edit handles this separately.
if ( ! $this->bulk ) {
$this->maintenance_mode( true );
}
return $response;
}
/**
* Turns off maintenance mode after upgrading the active theme.
*
* Hooked to the {@see 'upgrader_post_install'} filter by Theme_Upgrader::upgrade()
* and Theme_Upgrader::bulk_upgrade().
*
* @since 2.8.0
*
* @param bool|WP_Error $response The installation response after the installation has finished.
* @param array $theme Theme arguments.
* @return bool|WP_Error The original `$response` parameter or WP_Error.
*/
public function current_after( $response, $theme ) {
if ( is_wp_error( $response ) ) {
return $response;
}
$theme = isset( $theme['theme'] ) ? $theme['theme'] : '';
// Only run if active theme.
if ( get_stylesheet() !== $theme ) {
return $response;
}
// Ensure stylesheet name hasn't changed after the upgrade:
if ( get_stylesheet() === $theme && $theme !== $this->result['destination_name'] ) {
wp_clean_themes_cache();
$stylesheet = $this->result['destination_name'];
switch_theme( $stylesheet );
}
// Time to remove maintenance mode. Bulk edit handles this separately.
if ( ! $this->bulk ) {
$this->maintenance_mode( false );
}
return $response;
}
/**
* Deletes the old theme during an upgrade.
*
* Hooked to the {@see 'upgrader_clear_destination'} filter by Theme_Upgrader::upgrade()
* and Theme_Upgrader::bulk_upgrade().
*
* @since 2.8.0
*
* @global WP_Filesystem_Base $wp_filesystem Subclass
*
* @param bool $removed
* @param string $local_destination
* @param string $remote_destination
* @param array $theme
* @return bool
*/
public function delete_old_theme( $removed, $local_destination, $remote_destination, $theme ) {
global $wp_filesystem;
if ( is_wp_error( $removed ) ) {
return $removed; // Pass errors through.
}
if ( ! isset( $theme['theme'] ) ) {
return $removed;
}
$theme = $theme['theme'];
$themes_dir = trailingslashit( $wp_filesystem->wp_themes_dir( $theme ) );
if ( $wp_filesystem->exists( $themes_dir . $theme ) ) {
if ( ! $wp_filesystem->delete( $themes_dir . $theme, true ) ) {
return false;
}
}
return true;
}
/**
* Gets the WP_Theme object for a theme.
*
* @since 2.8.0
* @since 3.0.0 The `$theme` argument was added.
*
* @param string $theme The directory name of the theme. This is optional, and if not supplied,
* the directory name from the last result will be used.
* @return WP_Theme|false The theme's info object, or false `$theme` is not supplied
* and the last result isn't set.
*/
public function theme_info( $theme = null ) {
if ( empty( $theme ) ) {
if ( ! empty( $this->result['destination_name'] ) ) {
$theme = $this->result['destination_name'];
} else {
return false;
}
}
$theme = wp_get_theme( $theme );
$theme->cache_delete();
return $theme;
}
}