File Content: class-wp-importer.php <?php /** * WP_Importer base class */ class WP_Importer { /** * Class Constructor */ public function __construct() {} /** * Returns array with imported permalinks from WordPress database * * @global wpdb $wpdb WordPress database abstraction object. * * @param string $importer_name * @param string $bid * @return array */ public function get_imported_posts( $importer_name, $bid ) { global $wpdb; $hashtable = array(); $limit = 100; $offset = 0; // Grab all posts in chunks do { $meta_key = $importer_name . '_' . $bid . '_permalink'; $sql = $wpdb->prepare( "SELECT post_id, meta_value FROM $wpdb->postmeta WHERE meta_key = %s LIMIT %d,%d", $meta_key, $offset, $limit ); $results = $wpdb->get_results( $sql ); // Increment offset $offset = ( $limit + $offset ); if ( ! empty( $results ) ) { foreach ( $results as $r ) { // Set permalinks into array $hashtable[ $r->meta_value ] = intval( $r->post_id ); } } } while ( count( $results ) == $limit ); // Unset to save memory. unset( $results, $r ); return $hashtable; } /** * Return count of imported permalinks from WordPress database * * @global wpdb $wpdb WordPress database abstraction object. * * @param string $importer_name * @param string $bid * @return int */ public function count_imported_posts( $importer_name, $bid ) { global $wpdb; $count = 0; // Get count of permalinks $meta_key = $importer_name . '_' . $bid . '_permalink'; $sql = $wpdb->prepare( "SELECT COUNT( post_id ) AS cnt FROM $wpdb->postmeta WHERE meta_key = '%s'", $meta_key ); $result = $wpdb->get_results( $sql ); if ( ! empty( $result ) ) { $count = intval( $result[0]->cnt ); } // Unset to save memory. unset( $results ); return $count; } /** * Set array with imported comments from WordPress database * * @global wpdb $wpdb WordPress database abstraction object. * * @param string $bid * @return array */ public function get_imported_comments( $bid ) { global $wpdb; $hashtable = array(); $limit = 100; $offset = 0; // Grab all comments in chunks do { $sql = $wpdb->prepare( "SELECT comment_ID, comment_agent FROM $wpdb->comments LIMIT %d,%d", $offset, $limit ); $results = $wpdb->get_results( $sql ); // Increment offset $offset = ( $limit + $offset ); if ( ! empty( $results ) ) { foreach ( $results as $r ) { // Explode comment_agent key list ( $ca_bid, $source_comment_id ) = explode( '-', $r->comment_agent ); $source_comment_id = intval( $source_comment_id ); // Check if this comment came from this blog if ( $bid == $ca_bid ) { $hashtable[ $source_comment_id ] = intval( $r->comment_ID ); } } } } while ( count( $results ) == $limit ); // Unset to save memory. unset( $results, $r ); return $hashtable; } /** * @param int $blog_id * @return int|void */ public function set_blog( $blog_id ) { if ( is_numeric( $blog_id ) ) { $blog_id = (int) $blog_id; } else { $blog = 'http://' . preg_replace( '#^https?://#', '', $blog_id ); if ( ( ! $parsed = parse_url( $blog ) ) || empty( $parsed['host'] ) ) { fwrite( STDERR, "Error: can not determine blog_id from $blog_id\n" ); exit(); } if ( empty( $parsed['path'] ) ) { $parsed['path'] = '/'; } $blogs = get_sites( array( 'domain' => $parsed['host'], 'number' => 1, 'path' => $parsed['path'], ) ); if ( ! $blogs ) { fwrite( STDERR, "Error: Could not find blog\n" ); exit(); } $blog = array_shift( $blogs ); $blog_id = (int) $blog->blog_id; } if ( function_exists( 'is_multisite' ) ) { if ( is_multisite() ) { switch_to_blog( $blog_id ); } } return $blog_id; } /** * @param int $user_id * @return int|void */ public function set_user( $user_id ) { if ( is_numeric( $user_id ) ) { $user_id = (int) $user_id; } else { $user_id = (int) username_exists( $user_id ); } if ( ! $user_id || ! wp_set_current_user( $user_id ) ) { fwrite( STDERR, "Error: can not find user\n" ); exit(); } return $user_id; } /** * Sort by strlen, longest string first * * @param string $a * @param string $b * @return int */ public function cmpr_strlen( $a, $b ) { return strlen( $b ) - strlen( $a ); } /** * GET URL * * @param string $url * @param string $username * @param string $password * @param bool $head * @return array */ public function get_page( $url, $username = '', $password = '', $head = false ) { // Increase the timeout add_filter( 'http_request_timeout', array( $this, 'bump_request_timeout' ) ); $headers = array(); $args = array(); if ( true === $head ) { $args['method'] = 'HEAD'; } if ( ! empty( $username ) && ! empty( $password ) ) { $headers['Authorization'] = 'Basic ' . base64_encode( "$username:$password" ); } $args['headers'] = $headers; return wp_safe_remote_request( $url, $args ); } /** * Bump up the request timeout for http requests * * @param int $val * @return int */ public function bump_request_timeout( $val ) { return 60; } /** * Check if user has exceeded disk quota * * @return bool */ public function is_user_over_quota() { if ( function_exists( 'upload_is_user_over_quota' ) ) { if ( upload_is_user_over_quota() ) { return true; } } return false; } /** * Replace newlines, tabs, and multiple spaces with a single space * * @param string $string * @return string */ public function min_whitespace( $string ) { return preg_replace( '|[\r\n\t ]+|', ' ', $string ); } /** * Resets global variables that grow out of control during imports. * * @since 3.0.0 * * @global wpdb $wpdb WordPress database abstraction object. * @global array $wp_actions */ public function stop_the_insanity() { global $wpdb, $wp_actions; // Or define( 'WP_IMPORTING', true ); $wpdb->queries = array(); // Reset $wp_actions to keep it from growing out of control $wp_actions = array(); } } /** * Returns value of command line params. * Exits when a required param is not set. * * @param string $param * @param bool $required * @return mixed */ function get_cli_args( $param, $required = false ) { $args = $_SERVER['argv']; if ( ! is_array( $args ) ) { $args = array(); } $out = array(); $last_arg = null; $return = null; $il = sizeof( $args ); for ( $i = 1, $il; $i < $il; $i++ ) { if ( (bool) preg_match( '/^--(.+)/', $args[ $i ], $match ) ) { $parts = explode( '=', $match[1] ); $key = preg_replace( '/[^a-z0-9]+/', '', $parts[0] ); if ( isset( $parts[1] ) ) { $out[ $key ] = $parts[1]; } else { $out[ $key ] = true; } $last_arg = $key; } elseif ( (bool) preg_match( '/^-([a-zA-Z0-9]+)/', $args[ $i ], $match ) ) { for ( $j = 0, $jl = strlen( $match[1] ); $j < $jl; $j++ ) { $key = $match[1]{$j}; $out[ $key ] = true; } $last_arg = $key; } elseif ( $last_arg !== null ) { $out[ $last_arg ] = $args[ $i ]; } } // Check array for specified param if ( isset( $out[ $param ] ) ) { // Set return value $return = $out[ $param ]; } // Check for missing required param if ( ! isset( $out[ $param ] ) && $required ) { // Display message and exit echo "\"$param\" parameter is required but was not specified\n"; exit(); } return $return; } Submit