<?php

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/**

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* WordPress Administration Importer API.

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*

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* @package WordPress

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* @subpackage Administration

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*/

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/**

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* Retrieve list of importers.

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*

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* @since 2.0.0

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*

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* @global array $wp_importers

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* @return array

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*/

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function get_importers() {

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global $wp_importers;

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if ( is_array( $wp_importers ) ) {

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uasort( $wp_importers, '_usort_by_first_member' );

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}

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return $wp_importers;

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}

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/**

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* Sorts a multidimensional array by first member of each top level member

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*

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* Used by uasort() as a callback, should not be used directly.

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*

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* @since 2.9.0

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* @access private

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*

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* @param array $a

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* @param array $b

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* @return int

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*/

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function _usort_by_first_member( $a, $b ) {

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return strnatcasecmp( $a[0], $b[0] );

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}

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/**

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* Register importer for WordPress.

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*

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* @since 2.0.0

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*

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* @global array $wp_importers

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*

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* @param string $id Importer tag. Used to uniquely identify importer.

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* @param string $name Importer name and title.

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* @param string $description Importer description.

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* @param callable $callback Callback to run.

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* @return void|WP_Error Void on success. WP_Error when $callback is WP_Error.

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*/

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function register_importer( $id, $name, $description, $callback ) {

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global $wp_importers;

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if ( is_wp_error( $callback ) ) {

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return $callback;

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}

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$wp_importers[ $id ] = array( $name, $description, $callback );

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}

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/**

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* Cleanup importer.

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*

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* Removes attachment based on ID.

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*

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* @since 2.0.0

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*

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* @param string $id Importer ID.

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*/

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function wp_import_cleanup( $id ) {

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wp_delete_attachment( $id );

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}

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/**

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* Handle importer uploading and add attachment.

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*

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* @since 2.0.0

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*

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* @return array Uploaded file's details on success, error message on failure

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*/

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function wp_import_handle_upload() {

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if ( ! isset( $_FILES['import'] ) ) {

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return array(

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'error' => sprintf(

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/* translators: 1: php.ini, 2: post_max_size, 3: upload_max_filesize */

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__( 'File is empty. Please upload something more substantial. This error could also be caused by uploads being disabled in your %1$s file or by %2$s being defined as smaller than %3$s in %1$s.' ),

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'php.ini',

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'post_max_size',

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'upload_max_filesize'

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),

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);

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}

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$overrides = array(

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'test_form' => false,

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'test_type' => false,

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);

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$_FILES['import']['name'] .= '.txt';

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$upload = wp_handle_upload( $_FILES['import'], $overrides );

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if ( isset( $upload['error'] ) ) {

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return $upload;

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}

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// Construct the object array.

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$object = array(

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'post_title' => wp_basename( $upload['file'] ),

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'post_content' => $upload['url'],

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'post_mime_type' => $upload['type'],

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'guid' => $upload['url'],

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'context' => 'import',

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'post_status' => 'private',

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);

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// Save the data.

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$id = wp_insert_attachment( $object, $upload['file'] );

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/*

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* Schedule a cleanup for one day from now in case of failed

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* import or missing wp_import_cleanup() call.

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*/

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wp_schedule_single_event( time() + DAY_IN_SECONDS, 'importer_scheduled_cleanup', array( $id ) );

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return array(

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'file' => $upload['file'],

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'id' => $id,

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);

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}

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/**

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* Returns a list from WordPress.org of popular importer plugins.

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*

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* @since 3.5.0

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*

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* @return array Importers with metadata for each.

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*/

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function wp_get_popular_importers() {

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// Include an unmodified $wp_version.

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require ABSPATH . WPINC . '/version.php';

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$locale = get_user_locale();

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$cache_key = 'popular_importers_' . md5( $locale . $wp_version );

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$popular_importers = get_site_transient( $cache_key );

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if ( ! $popular_importers ) {

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$url = add_query_arg(

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array(

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'locale' => $locale,

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'version' => $wp_version,

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),

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'http://api.wordpress.org/core/importers/1.1/'

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);

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$options = array( 'user-agent' => 'WordPress/' . $wp_version . '; ' . home_url( '/' ) );

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if ( wp_http_supports( array( 'ssl' ) ) ) {

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$url = set_url_scheme( $url, 'https' );

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}

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$response = wp_remote_get( $url, $options );

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$popular_importers = json_decode( wp_remote_retrieve_body( $response ), true );

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if ( is_array( $popular_importers ) ) {

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set_site_transient( $cache_key, $popular_importers, 2 * DAY_IN_SECONDS );

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} else {

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$popular_importers = false;

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}

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}

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if ( is_array( $popular_importers ) ) {

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// If the data was received as translated, return it as-is.

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if ( $popular_importers['translated'] ) {

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return $popular_importers['importers'];

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}

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foreach ( $popular_importers['importers'] as &$importer ) {

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// phpcs:ignore WordPress.WP.I18n.LowLevelTranslationFunction,WordPress.WP.I18n.NonSingularStringLiteralText

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$importer['description'] = translate( $importer['description'] );

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if ( 'WordPress' !== $importer['name'] ) {

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// phpcs:ignore WordPress.WP.I18n.LowLevelTranslationFunction,WordPress.WP.I18n.NonSingularStringLiteralText

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$importer['name'] = translate( $importer['name'] );

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}

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}

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return $popular_importers['importers'];

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}

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return array(

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// slug => name, description, plugin slug, and register_importer() slug.

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'blogger' => array(

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'name' => __( 'Blogger' ),

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'description' => __( 'Import posts, comments, and users from a Blogger blog.' ),

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'plugin-slug' => 'blogger-importer',

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'importer-id' => 'blogger',

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),

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'wpcat2tag' => array(

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'name' => __( 'Categories and Tags Converter' ),

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'description' => __( 'Convert existing categories to tags or tags to categories, selectively.' ),

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'plugin-slug' => 'wpcat2tag-importer',

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'importer-id' => 'wp-cat2tag',

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),

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'livejournal' => array(

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'name' => __( 'LiveJournal' ),

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'description' => __( 'Import posts from LiveJournal using their API.' ),

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'plugin-slug' => 'livejournal-importer',

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'importer-id' => 'livejournal',

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),

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'movabletype' => array(

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'name' => __( 'Movable Type and TypePad' ),

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'description' => __( 'Import posts and comments from a Movable Type or TypePad blog.' ),

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'plugin-slug' => 'movabletype-importer',

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'importer-id' => 'mt',

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),

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'rss' => array(

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'name' => __( 'RSS' ),

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'description' => __( 'Import posts from an RSS feed.' ),

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'plugin-slug' => 'rss-importer',

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'importer-id' => 'rss',

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),

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'tumblr' => array(

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'name' => __( 'Tumblr' ),

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'description' => __( 'Import posts &amp; media from Tumblr using their API.' ),

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'plugin-slug' => 'tumblr-importer',

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'importer-id' => 'tumblr',

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),

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'wordpress' => array(

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'name' => 'WordPress',

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'description' => __( 'Import posts, pages, comments, custom fields, categories, and tags from a WordPress export file.' ),

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'plugin-slug' => 'wordpress-importer',

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'importer-id' => 'wordpress',

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),

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);

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}

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