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WP_Importer class. Props briancolinger. see #13034
git-svn-id: http://svn.automattic.com/wordpress/trunk@14760 1a063a9b-81f0-0310-95a4-ce76da25c4cd
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ryan
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310
wp-admin/includes/class-wp-importer.php
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310
wp-admin/includes/class-wp-importer.php
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<?php
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/**
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* WP_Importer base class
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*/
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class WP_Importer {
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/**
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* Class Constructor
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*
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* @return void
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*/
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function __construct() {}
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function WP_Importer() {
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$this->__construct();
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}
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/**
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* Returns array with imported permalinks from WordPress database
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*
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* @param string $bid
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* @return array
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*/
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function get_imported_posts( $importer_name, $bid ) {
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global $wpdb;
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$hashtable = array();
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$limit = 100;
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$offset = 0;
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// Grab all posts in chunks
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do {
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$meta_key = $importer_name . '_' . $bid . '_permalink';
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$sql = $wpdb->prepare( "SELECT post_id, meta_value FROM $wpdb->postmeta WHERE meta_key = '%s' LIMIT %d,%d", $meta_key, $offset, $limit );
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$results = $wpdb->get_results( $sql );
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// Increment offset
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$offset = ( $limit + $offset );
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if ( !empty( $results ) ) {
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foreach ( $results as $r ) {
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// Set permalinks into array
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$hashtable[$r->meta_value] = intval( $r->post_id );
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}
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}
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} while ( count( $results ) == $limit );
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// unset to save memory
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unset( $results, $r );
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return $hashtable;
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}
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/**
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* Return count of imported permalinks from WordPress database
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*
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* @param string $bid
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* @return int
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*/
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function count_imported_posts( $importer_name, $bid ) {
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global $wpdb;
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$count = 0;
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// Get count of permalinks
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$meta_key = $importer_name . '_' . $bid . '_permalink';
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$sql = $wpdb->prepare( "SELECT COUNT( post_id ) AS cnt FROM $wpdb->postmeta WHERE meta_key = '%s'", $meta_key );
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$result = $wpdb->get_results( $sql );
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if ( !empty( $result ) )
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$count = intval( $result[0]->cnt );
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// unset to save memory
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unset( $results );
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return $count;
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}
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/**
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* Set array with imported comments from WordPress database
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*
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* @param string $bid
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* @return array
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*/
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function get_imported_comments( $bid ) {
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global $wpdb;
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$hashtable = array();
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$limit = 100;
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$offset = 0;
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// Grab all comments in chunks
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do {
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$sql = $wpdb->prepare( "SELECT comment_ID, comment_agent FROM $wpdb->comments LIMIT %d,%d", $offset, $limit );
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$results = $wpdb->get_results( $sql );
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// Increment offset
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$offset = ( $limit + $offset );
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if ( !empty( $results ) ) {
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foreach ( $results as $r ) {
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// Explode comment_agent key
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list ( $ca_bid, $source_comment_id ) = explode( '-', $r->comment_agent );
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$source_comment_id = intval( $source_comment_id );
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// Check if this comment came from this blog
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if ( $bid == $ca_bid ) {
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$hashtable[$source_comment_id] = intval( $r->comment_ID );
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}
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}
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}
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} while ( count( $results ) == $limit );
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// unset to save memory
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unset( $results, $r );
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return $hashtable;
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}
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function set_blog( $blog_id ) {
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if ( is_numeric( $blog_id ) ) {
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$blog_id = (int) $blog_id;
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} else {
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$blog = 'http://' . preg_replace( '#^https?://#', '', $blog_id );
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if ( ( !$parsed = parse_url( $blog ) ) || empty( $parsed['host'] ) ) {
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fwrite( STDERR, "Error: can not determine blog_id from $blog_id\n" );
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exit();
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}
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if ( empty( $parsed['path'] ) )
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$parsed['path'] = '/';
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if ( !$blog = get_blog_info( $parsed['host'], $parsed['path'] ) ) {
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fwrite( STDERR, "Error: Could not find blog\n" );
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exit();
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}
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$blog_id = (int) $blog->blog_id;
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// Restore global $current_blog
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global $current_blog;
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$current_blog = $blog;
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}
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if ( function_exists( 'is_multisite' ) ) {
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if ( is_multisite() )
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switch_to_blog( $blog_id );
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}
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return $blog_id;
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}
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function set_user( $user_id ) {
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if ( is_numeric( $user_id ) ) {
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$user_id = (int) $user_id;
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} else {
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$user_id = (int) username_exists( $user_id );
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}
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if ( !$user_id || !wp_set_current_user( $user_id ) ) {
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fwrite( STDERR, "Error: can not find user\n" );
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exit();
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}
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return $user_id;
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}
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/**
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* Sort by strlen, longest string first
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*
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* @param string $a
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* @param string $b
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* @return int
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*/
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function cmpr_strlen( $a, $b ) {
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return strlen( $b ) - strlen( $a );
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}
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/**
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* GET URL
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*
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* @param string $url
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* @param string $username
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* @param string $password
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* @param bool $head
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* @return array
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*/
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function get_page( $url, $username = '', $password = '', $head = false ) {
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// Increase the timeout
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add_filter( 'http_request_timeout', array( &$this, 'bump_request_timeout' ) );
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$headers = array();
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$args = array();
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if ( true === $head )
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$args['method'] = 'HEAD';
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if ( !empty( $username ) && !empty( $password ) )
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$headers['Authorization'] = 'Basic ' . base64_encode( "$username:$password" );
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$args['headers'] = $headers;
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return wp_remote_request( $url, $args );
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}
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/**
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* Bump up the request timeout for http requests
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*
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* @param int $val
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* @return int
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*/
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function bump_request_timeout( $val ) {
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return 60;
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}
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/**
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* Check if user has exceeded disk quota
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*
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* @return bool
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*/
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function is_user_over_quota() {
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global $current_user, $current_blog;
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if ( function_exists( 'upload_is_user_over_quota' ) ) {
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if ( upload_is_user_over_quota( 1 ) ) {
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echo "Sorry, you have used your upload quota.\n";
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return true;
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}
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}
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return false;
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}
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/**
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* Replace newlines, tabs, and multiple spaces with a single space
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*
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* @param string $string
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* @return string
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*/
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function min_whitespace( $string ) {
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return preg_replace( '|[\r\n\t ]+|', ' ', $string );
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}
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/**
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* Reset global variables that grow out of control during imports
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*
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* @return void
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*/
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function stop_the_insanity() {
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global $wpdb, $wp_actions;
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// Or define( 'WP_IMPORTING', true );
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$wpdb->queries = array();
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// Reset $wp_actions to keep it from growing out of control
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$wp_actions = array();
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}
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}
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/**
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* Returns value of command line params.
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* Exits when a required param is not set.
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*
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* @param string $param
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* @param bool $required
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* @return mixed
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*/
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function get_cli_args( $param, $required = false ) {
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$args = $_SERVER['argv'];
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$out = array();
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$last_arg = null;
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$return = null;
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$il = sizeof( $args );
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for ( $i = 1, $il; $i < $il; $i++ ) {
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if ( (bool) preg_match( "/^--(.+)/", $args[$i], $match ) ) {
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$parts = explode( "=", $match[1] );
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$key = preg_replace( "/[^a-z0-9]+/", "", $parts[0] );
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if ( isset( $parts[1] ) ) {
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$out[$key] = $parts[1];
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} else {
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$out[$key] = true;
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}
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$last_arg = $key;
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} else if ( (bool) preg_match( "/^-([a-zA-Z0-9]+)/", $args[$i], $match ) ) {
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for ( $j = 0, $jl = strlen( $match[1] ); $j < $jl; $j++ ) {
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$key = $match[1]{$j};
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$out[$key] = true;
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}
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$last_arg = $key;
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} else if ( $last_arg !== null ) {
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$out[$last_arg] = $args[$i];
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}
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}
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// Check array for specified param
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if ( isset( $out[$param] ) ) {
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// Set return value
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$return = $out[$param];
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}
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// Check for missing required param
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if ( !isset( $out[$param] ) && $required ) {
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// Display message and exit
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echo "\"$param\" parameter is required but was not specified\n";
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exit();
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}
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return $return;
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}
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