<?php

/**

 * WordPress Administration Importer API.

 *

 * @package WordPress

 * @subpackage Administration

 */

/**

 * Retrieve list of importers.

 *

 * @since 2.0.0

 *

 * @return array

 */

function get_importers() {

	global $wp_importers;

	if ( is_array($wp_importers) )

		uasort($wp_importers, create_function('$a, $b', 'return strcmp($a[0], $b[0]);'));

	return $wp_importers;

}

/**

 * Register importer for WordPress.

 *

 * @since 2.0.0

 *

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

 * @param string $name Importer name and title.

 * @param string $description Importer description.

 * @param callback $callback Callback to run.

 * @return WP_Error Returns WP_Error when $callback is WP_Error.

 */

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

	global $wp_importers;

	if ( is_wp_error( $callback ) )

		return $callback;

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

}

/**

 * Cleanup importer.

 *

 * Removes attachment based on ID.

 *

 * @since 2.0.0

 *

 * @param string $id Importer ID.

 */

function wp_import_cleanup( $id ) {

	wp_delete_attachment( $id );

}

/**

 * Handle importer uploading and add attachment.

 *

 * @since 2.0.0

 *

 */

function wp_import_handle_upload() {

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

		$file['error'] = __( 'File is empty. Please upload something more substantial. This error could also be caused by uploads being disabled in your php.ini or by post_max_size being defined as smaller than upload_max_filesize in php.ini.' );

		return $file;

	}

	$overrides = array( 'test_form' => false, 'test_type' => false );

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

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

	if ( isset( $file['error'] ) )

		return $file;

	$url = $file['url'];

	$type = $file['type'];

	$filename = basename( $file );

	// Construct the object array

	$object = array( 'post_title' => $filename,

		'post_content' => $url,

		'post_mime_type' => $type,

	);

	// Save the data

	$id = wp_insert_attachment( $object, $file );

	return array( 'file' => $file, 'id' => $id );

}