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jsonfeed-importer.php
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jsonfeed-importer.php
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<?php
/*
Plugin Name: JSONFeed Importer
Plugin URI: https://github.com/jasonadamyoung/jsonfeed-importer
Description: Import posts from an JSON Feed ( https://jsonfeed.org/ ). Directly based on the wordpressdotorg RSS-Importer.
Author: jasonadamyoung
Author URI: https://rambleon.org/
Version: 0.1
Stable tag: 0.1
License: GPL version 2 or later - http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
Text Domain: jsonfeed-importer
*/
if ( !defined('WP_LOAD_IMPORTERS') )
return;
// Load Importer API
require_once ABSPATH . 'wp-admin/includes/import.php';
if ( !class_exists( 'WP_Importer' ) ) {
$class_wp_importer = ABSPATH . 'wp-admin/includes/class-wp-importer.php';
if ( file_exists( $class_wp_importer ) )
require_once $class_wp_importer;
}
/**
* JSONFeed Importer
*
* @package WordPress
* @subpackage Importer
*/
/**
* JSONFeed Importer
*
* Will process a JSONFeed for importing posts into WordPress.
*
* @since unknown
*/
if ( class_exists( 'WP_Importer' ) ) {
class JSONFeed_Import extends WP_Importer {
var $posts = array ();
var $file;
function header() {
echo '<div class="wrap">';
screen_icon();
echo '<h2>'.__('Import JSONFeed', 'jsonfeed-importer').'</h2>';
}
function footer() {
echo '</div>';
}
function greet() {
echo '<div class="narrow">';
echo '<p>'.__('This importer allows you to extract posts from an JSONFeed file into your WordPress site. This is useful if you want to import your posts from a system that is not handled by a custom import tool. Pick an JSONFeed file to upload and click Import.', 'jsonfeed-importer').'</p>';
wp_import_upload_form("admin.php?import=jsonfeed&step=1");
echo '</div>';
}
function _normalize_tag( $matches ) {
return '<' . strtolower( $matches[1] );
}
function get_posts() {
global $wpdb;
$importdata = file_get_contents($this->file); // Read the file into an array
$jsondata = json_decode($importdata);
$this->posts = $jsondata->{'items'};
$index = 0;
foreach ($this->posts as $post) {
$post_title = $post->{'title'};
$date_published = new DateTime($post->{'date_published'});
$date_published->setTimezone(new DateTimeZone('UTC'));
$post_date = $date_published->format('Y-m-d H:i:s');
$categories = $post->{'tags'};
$guid = $post->{'id'};
$post_content = $post->{'content_html'};
// Clean up content
$post_content = preg_replace_callback('|<(/?[A-Z]+)|', array( &$this, '_normalize_tag' ), $post_content);
$post_content = str_replace('<br>', '<br />', $post_content);
$post_content = str_replace('<hr>', '<hr />', $post_content);
$post_author = 1;
$post_status = 'publish';
$this->posts[$index] = compact('post_author', 'post_date', 'post_date_gmt', 'post_content', 'post_title', 'post_status', 'guid', 'categories');
$index++;
}
}
function import_posts() {
echo '<ol>';
foreach ($this->posts as $post) {
echo "<li>".__('Importing post...', 'jsonfeed-importer');
extract($post);
if ($post_id = post_exists($post_title, $post_content, $post_date)) {
_e('Post already imported', 'jsonfeed-importer');
} else {
$post_id = wp_insert_post($post);
if ( is_wp_error( $post_id ) )
return $post_id;
if (!$post_id) {
_e('Couldn’t get post ID', 'jsonfeed-importer');
return;
}
if (0 != count($categories))
wp_create_categories($categories, $post_id);
_e('Done!', 'rss-importer');
}
echo '</li>';
}
echo '</ol>';
}
function import() {
$file = wp_import_handle_upload();
if ( isset($file['error']) ) {
echo $file['error'];
return;
}
$this->file = $file['file'];
$this->get_posts();
$result = $this->import_posts();
if ( is_wp_error( $result ) )
return $result;
wp_import_cleanup($file['id']);
do_action('import_done', 'rss');
echo '<h3>';
printf(__('All done. <a href="%s">Have fun!</a>', 'rss-importer'), get_option('home'));
echo '</h3>';
}
function dispatch() {
if (empty ($_GET['step']))
$step = 0;
else
$step = (int) $_GET['step'];
$this->header();
switch ($step) {
case 0 :
$this->greet();
break;
case 1 :
check_admin_referer('import-upload');
$result = $this->import();
if ( is_wp_error( $result ) )
echo $result->get_error_message();
break;
}
$this->footer();
}
function JSONFeed_Import() {
// Nothing.
}
}
$jsonfeed_import = new JSONFeed_Import();
register_importer('jsonfeed', __('JSONFeed', 'jsonfeed-importer'), __('Import posts from an JSONFeed.', 'jsonfeed-importer'), array ($jsonfeed_import, 'dispatch'));
} // class_exists( 'WP_Importer' )
function jsonfeed_importer_init() {
// Nothing.
}
add_action( 'init', 'jsonfeed_importer_init' );