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<?php

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/**

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* File with the class to handle data from wpSEO.de.

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* @package WPSEO\Admin\Import\Plugins

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/**

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* Class WPSEO_Import_WPSEO.

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* Class with functionality to import & clean wpSEO.de post metadata.

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class WPSEO_Import_WPSEO extends WPSEO_Plugin_Importer {

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/**

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* The plugin name.

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* @var string

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protected $plugin_name = 'wpSEO.de';

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/**

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* Meta key, used in SQL LIKE clause for delete query.

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* @var string

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protected $meta_key = '_wpseo_edit_%';

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/**

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* Array of meta keys to detect and import.

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* @var array

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protected $clone_keys = [

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[

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'old_key' => '_wpseo_edit_description',

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'new_key' => 'metadesc',

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[

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'old_key' => '_wpseo_edit_title',

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'new_key' => 'title',

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[

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'old_key' => '_wpseo_edit_canonical',

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'new_key' => 'canonical',

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[

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'old_key' => '_wpseo_edit_og_title',

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'new_key' => 'opengraph-title',

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[

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'old_key' => '_wpseo_edit_og_description',

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'new_key' => 'opengraph-description',

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[

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'old_key' => '_wpseo_edit_og_image',

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'new_key' => 'opengraph-image',

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[

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'old_key' => '_wpseo_edit_twittercard_title',

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'new_key' => 'twitter-title',

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[

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'old_key' => '_wpseo_edit_twittercard_description',

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'new_key' => 'twitter-description',

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[

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'old_key' => '_wpseo_edit_twittercard_image',

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'new_key' => 'twitter-image',

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];

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/**

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* The values 1 - 6 are the configured values from wpSEO. This array will map the values of wpSEO to our values.

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* There are some double array like 1-6 and 3-4. The reason is they only set the index value. The follow value is

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* the default we use in the cases there isn't a follow value present.

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* @var array

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private $robot_values = [

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// In wpSEO: index, follow.

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1 => [

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'index' => 2,

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'follow' => 0,

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// In wpSEO: index, nofollow.

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2 => [

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'index' => 2,

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'follow' => 1,

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// In wpSEO: noindex.

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3 => [

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'index' => 1,

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'follow' => 0,

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// In wpSEO: noindex, follow.

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4 => [

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'index' => 1,

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'follow' => 0,

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// In wpSEO: noindex, nofollow.

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5 => [

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'index' => 1,

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'follow' => 1,

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// In wpSEO: index.

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6 => [

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'index' => 2,

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'follow' => 0,

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];

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/**

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* Imports wpSEO settings.

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* @return bool Import success status.

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protected function import() {

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$status = parent::import();

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if ( $status ) {

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$this->import_post_robots();

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$this->import_taxonomy_metas();

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}

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return $status;

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}

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/**

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* Removes wpseo.de post meta's.

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* @return bool Cleanup status.

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protected function cleanup() {

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$this->cleanup_term_meta();

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$result = $this->cleanup_post_meta();

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return $result;

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}

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/**

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* Detects whether there is post meta data to import.

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* @return bool Boolean indicating whether there is something to import.

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protected function detect() {

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if ( parent::detect() ) {

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return true;

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}

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global $wpdb;

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$count = $wpdb->get_var( "SELECT COUNT(*) FROM {$wpdb->options} WHERE option_name LIKE 'wpseo_category_%'" );

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if ( $count !== '0' ) {

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return true;

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}

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return false;

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}

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/**

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* Imports the robot values from WPSEO plugin. These have to be converted to the Yoast format.

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* @return void

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private function import_post_robots() {

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$query_posts = new WP_Query( 'post_type=any&meta_key=_wpseo_edit_robots&order=ASC&fields=ids&nopaging=true' );

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if ( ! empty( $query_posts->posts ) ) {

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foreach ( array_values( $query_posts->posts ) as $post_id ) {

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$this->import_post_robot( $post_id );

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}

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}

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}

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/**

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* Gets the wpSEO robot value and map this to Yoast SEO values.

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* @param int $post_id The post id of the current post.

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* @return void

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private function import_post_robot( $post_id ) {

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$wpseo_robots = get_post_meta( $post_id, '_wpseo_edit_robots', true );

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$robot_value = $this->get_robot_value( $wpseo_robots );

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// Saving the new meta values for Yoast SEO.

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$this->maybe_save_post_meta( 'meta-robots-noindex', $robot_value['index'], $post_id );

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$this->maybe_save_post_meta( 'meta-robots-nofollow', $robot_value['follow'], $post_id );

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}

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/**

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* Imports the taxonomy metas from wpSEO.

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* @return void

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private function import_taxonomy_metas() {

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$terms = get_terms(

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[

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'taxonomy' => get_taxonomies(),

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'hide_empty' => false,

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]

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);

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$tax_meta = get_option( 'wpseo_taxonomy_meta' );

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foreach ( $terms as $term ) {

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$this->import_taxonomy_description( $tax_meta, $term->taxonomy, $term->term_id );

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$this->import_taxonomy_robots( $tax_meta, $term->taxonomy, $term->term_id );

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}

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update_option( 'wpseo_taxonomy_meta', $tax_meta );

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}

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/**

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* Imports the meta description to Yoast SEO.

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* @param array $tax_meta The array with the current metadata.

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* @param string $taxonomy String with the name of the taxonomy.

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* @param string $term_id The ID of the current term.

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* @return void

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private function import_taxonomy_description( &$tax_meta, $taxonomy, $term_id ) {

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$description = get_option( 'wpseo_' . $taxonomy . '_' . $term_id, false );

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if ( $description !== false ) {

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// Import description.

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$tax_meta[ $taxonomy ][ $term_id ]['wpseo_desc'] = $description;

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}

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}

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/**

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* Imports the robot value to Yoast SEO.

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* @param array $tax_meta The array with the current metadata.

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* @param string $taxonomy String with the name of the taxonomy.

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* @param string $term_id The ID of the current term.

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* @return void

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private function import_taxonomy_robots( &$tax_meta, $taxonomy, $term_id ) {

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$wpseo_robots = get_option( 'wpseo_' . $taxonomy . '_' . $term_id . '_robots', false );

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if ( $wpseo_robots === false ) {

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return;

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}

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// The value 1, 2 and 6 are the index values in wpSEO.

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$new_robot_value = 'noindex';

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if ( in_array( (int) $wpseo_robots, [ 1, 2, 6 ], true ) ) {

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$new_robot_value = 'index';

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}

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$tax_meta[ $taxonomy ][ $term_id ]['wpseo_noindex'] = $new_robot_value;

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}

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/**

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* Deletes the wpSEO taxonomy meta data.

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* @param string $taxonomy String with the name of the taxonomy.

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* @param string $term_id The ID of the current term.

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* @return void

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private function delete_taxonomy_metas( $taxonomy, $term_id ) {

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delete_option( 'wpseo_' . $taxonomy . '_' . $term_id );

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delete_option( 'wpseo_' . $taxonomy . '_' . $term_id . '_robots' );

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}

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/**

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* Gets the robot config by given wpSEO robots value.

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* @param string $wpseo_robots The value in wpSEO that needs to be converted to the Yoast format.

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* @return string The correct robot value.

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private function get_robot_value( $wpseo_robots ) {

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if ( array_key_exists( $wpseo_robots, $this->robot_values ) ) {

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return $this->robot_values[ $wpseo_robots ];

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}

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return $this->robot_values[1];

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}

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/**

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* Deletes wpSEO postmeta from the database.

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* @return bool Cleanup status.

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private function cleanup_post_meta() {

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global $wpdb;

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// If we get to replace the data, let's do some proper cleanup.

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return $wpdb->query( "DELETE FROM {$wpdb->postmeta} WHERE meta_key LIKE '_wpseo_edit_%'" );

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}

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/**

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* Cleans up the wpSEO term meta.

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* @return void

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private function cleanup_term_meta() {

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$terms = get_terms(

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[

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'taxonomy' => get_taxonomies(),

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'hide_empty' => false,

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]

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);

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foreach ( $terms as $term ) {

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$this->delete_taxonomy_metas( $term->taxonomy, $term->term_id );

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}

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}

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}

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