Changeset 6448 for trunk/src/includes/admin/converter.php

Timestamp:

06/01/2017 06:40:48 PM (9 years ago)

Author:

johnjamesjacoby

Message:

Converter: Introduce bbp_get_converters() to DRY the directory crawling code.

Also allows converters to be filtered, should someone want to include their own in a plugin.

See #3095.

File:

• trunk/src/includes/admin/converter.php (modified) (3 diffs)

trunk/src/includes/admin/converter.php

@@ -14 +14 @@
 
 /**
- * Main BBP_Converter Class
+ * Return an array of available converters
+ *
+ * @since 2.6.0 bbPress (r6447)
+ *
+ * @return array
  */
-class BBP_Converter {
+function bbp_get_converters() {
 
-    /**
-     * The main bbPress Converter loader
-     *
-     * @since 2.1.0 bbPress (r3813)
-     *
-     * @uses BBP_Converter::includes() Include the required files
-     * @uses BBP_Converter::setup_actions() Setup the actions
-     */
-    public function __construct() {
+    // Default
+    $files  = array();
+    $path   = bbpress()->admin->admin_dir . 'converters/';
+    $curdir = opendir( $path );
 
-        // "I wonder where I'll float next."
-        if ( empty( $_SERVER['REQUEST_METHOD'] ) ) {
-            return;
-        }
-
-        // Bail if request is not correct
-        switch ( strtoupper( $_SERVER['REQUEST_METHOD'] ) ) {
-
-            // Converter is converting
-            case 'POST' :
-                if ( ( empty( $_POST['action'] ) || ( 'bbconverter_process' != $_POST['action'] ) ) ) {
-                    return;
-                }
-
-                break;
-
-            // Some other admin page
-            case 'GET'  :
-                if ( ( empty( $_GET['page'] ) || ( 'bbp-converter' != $_GET['page'] ) ) ) {
-                    return;
-                }
-
-                break;
-        }
-
-        // Proceed with the actions
-        $this->setup_actions();
-    }
-
-    /**
-     * Setup the default actions
-     *
-     * @since 2.1.0 bbPress (r3813)
-     *
-     * @uses add_action() To add various actions
-     */
-    private function setup_actions() {
-
-        // Attach to the admin head with our ajax requests cycle and css
-        add_action( 'bbp_admin_head',              array( $this, 'admin_head'              ) );
-
-        // Attach the bbConverter admin settings action to the WordPress admin init action.
-        add_action( 'bbp_register_admin_settings', array( $this, 'register_admin_settings' ) );
-
-        // Attach to the admin ajax request to process cycles
-        add_action( 'wp_ajax_bbconverter_process', array( $this, 'process_callback'        ) );
-    }
-
-    /**
-     * Register the settings
-     *
-     * @since 2.1.0 bbPress (r3813)
-     *
-     * @uses add_settings_section() To add our own settings section
-     * @uses add_settings_field() To add various settings fields
-     * @uses register_setting() To register various settings
-     */
-    public function register_admin_settings() {
-
-        // Add the main section
-        add_settings_section( 'bbpress_converter_main',     __( 'Database Settings', 'bbpress' ),  'bbp_converter_setting_callback_main_section', 'bbpress_converter' );
-
-        // System Select
-        add_settings_field( '_bbp_converter_platform',      __( 'Select Platform',   'bbpress' ),  'bbp_converter_setting_callback_platform', 'bbpress_converter', 'bbpress_converter_main' );
-        register_setting  ( 'bbpress_converter_main',       '_bbp_converter_platform',           'sanitize_title' );
-
-        // Database Server
-        add_settings_field( '_bbp_converter_db_server',     __( 'Database Server',   'bbpress' ),  'bbp_converter_setting_callback_dbserver', 'bbpress_converter', 'bbpress_converter_main' );
-        register_setting  ( 'bbpress_converter_main',       '_bbp_converter_db_server',          'sanitize_title' );
-
-        // Database Server Port
-        add_settings_field( '_bbp_converter_db_port',       __( 'Database Port',     'bbpress' ),  'bbp_converter_setting_callback_dbport', 'bbpress_converter', 'bbpress_converter_main' );
-        register_setting  ( 'bbpress_converter_main',       '_bbp_converter_db_port',            'sanitize_title' );
-
-        // Database Name
-        add_settings_field( '_bbp_converter_db_name',       __( 'Database Name',     'bbpress' ),  'bbp_converter_setting_callback_dbname', 'bbpress_converter', 'bbpress_converter_main' );
-        register_setting  ( 'bbpress_converter_main',       '_bbp_converter_db_name',            'sanitize_title' );
-
-        // Database User
-        add_settings_field( '_bbp_converter_db_user',       __( 'Database User',     'bbpress' ),  'bbp_converter_setting_callback_dbuser', 'bbpress_converter', 'bbpress_converter_main' );
-        register_setting  ( 'bbpress_converter_main',       '_bbp_converter_db_user',            'sanitize_title' );
-
-        // Database Pass
-        add_settings_field( '_bbp_converter_db_pass',       __( 'Database Password', 'bbpress' ),  'bbp_converter_setting_callback_dbpass', 'bbpress_converter', 'bbpress_converter_main' );
-        register_setting  ( 'bbpress_converter_main',       '_bbp_converter_db_pass',            'sanitize_title' );
-
-        // Database Prefix
-        add_settings_field( '_bbp_converter_db_prefix',     __( 'Table Prefix',      'bbpress' ),  'bbp_converter_setting_callback_dbprefix', 'bbpress_converter', 'bbpress_converter_main' );
-        register_setting  ( 'bbpress_converter_main',       '_bbp_converter_db_prefix',          'sanitize_title' );
-
-        // Add the options section
-        add_settings_section( 'bbpress_converter_opt',      __( 'Options',           'bbpress' ),  'bbp_converter_setting_callback_options_section', 'bbpress_converter' );
-
-        // Rows Limit
-        add_settings_field( '_bbp_converter_rows',          __( 'Rows Limit',        'bbpress' ),  'bbp_converter_setting_callback_rows', 'bbpress_converter', 'bbpress_converter_opt' );
-        register_setting  ( 'bbpress_converter_opt',        '_bbp_converter_rows',               'intval' );
-
-        // Delay Time
-        add_settings_field( '_bbp_converter_delay_time',    __( 'Delay Time',        'bbpress' ), 'bbp_converter_setting_callback_delay_time', 'bbpress_converter', 'bbpress_converter_opt' );
-        register_setting  ( 'bbpress_converter_opt',        '_bbp_converter_delay_time',        'intval' );
-
-        // Convert Users ?
-        add_settings_field( '_bbp_converter_convert_users', __( 'Convert Users',     'bbpress' ), 'bbp_converter_setting_callback_convert_users', 'bbpress_converter', 'bbpress_converter_opt' );
-        register_setting  ( 'bbpress_converter_opt',        '_bbp_converter_convert_users',     'intval' );
-
-        // Restart
-        add_settings_field( '_bbp_converter_restart',       __( 'Start Over',        'bbpress' ), 'bbp_converter_setting_callback_restart', 'bbpress_converter', 'bbpress_converter_opt' );
-        register_setting  ( 'bbpress_converter_opt',        '_bbp_converter_restart',           'intval' );
-
-        // Clean
-        add_settings_field( '_bbp_converter_clean',         __( 'Purge Previous Import', 'bbpress' ), 'bbp_converter_setting_callback_clean', 'bbpress_converter', 'bbpress_converter_opt' );
-        register_setting  ( 'bbpress_converter_opt',        '_bbp_converter_clean',             'intval' );
-    }
-
-    /**
-     * Admin scripts
-     *
-     * @since 2.1.0 bbPress (r3813)
-     */
-    public function admin_head() { ?>
-
-        <style type="text/css" media="screen">
-            /*<![CDATA[*/
-
-            div.bbp-converter-updated,
-            div.bbp-converter-warning {
-                border-radius: 3px 3px 3px 3px;
-                border-style: solid;
-                border-width: 1px;
-                padding: 5px 5px 5px 5px;
-            }
-
-            div.bbp-converter-updated {
-                height: 300px;
-                overflow: auto;
-                display: none;
-                background-color: #FFFFE0;
-                border-color: #E6DB55;
-                font-family: monospace;
-                font-weight: bold;
-            }
-
-            div.bbp-converter-updated p {
-                margin: 0.5em 0;
-                padding: 2px;
-                float: left;
-                clear: left;
-            }
-
-            div.bbp-converter-updated p.loading {
-                padding: 2px 20px 2px 2px;
-                background-image: url('<?php echo admin_url(); ?>images/wpspin_light.gif');
-                background-repeat: no-repeat;
-                background-position: center right;
-            }
-
-            #bbp-converter-stop {
-                display:none;
-            }
-
-            #bbp-converter-progress {
-                display:none;
-            }
-
-            /*]]>*/
-        </style>
-
-        <script language="javascript">
-
-            var bbconverter_is_running = false;
-            var bbconverter_run_timer;
-            var bbconverter_delay_time = 0;
-
-            function bbconverter_grab_data() {
-                var values = {};
-                jQuery.each(jQuery('#bbp-converter-settings').serializeArray(), function(i, field) {
-                    values[field.name] = field.value;
-                });
-
-                if( values['_bbp_converter_restart'] ) {
-                    jQuery('#_bbp_converter_restart').removeAttr("checked");
-                }
-
-                if( values['_bbp_converter_delay_time'] ) {
-                    bbconverter_delay_time = values['_bbp_converter_delay_time'] * 1000;
-                }
-
-                values['action'] = 'bbconverter_process';
-                values['_ajax_nonce'] = '<?php echo  wp_create_nonce( 'bbp_converter_process' ); ?>';
-
-                return values;
-            }
-
-            function bbconverter_start() {
-                if( false === bbconverter_is_running ) {
-                    bbconverter_is_running = true;
-                    jQuery('#bbp-converter-start').hide();
-                    jQuery('#bbp-converter-stop').show();
-                    jQuery('#bbp-converter-progress').show();
-                    bbconverter_log( '<p class="loading"><?php esc_html_e( 'Starting Conversion', 'bbpress' ); ?></p>' );
-                    bbconverter_run();
-                }
-            }
-
-            function bbconverter_run() {
-                jQuery.post(ajaxurl, bbconverter_grab_data(), function(response) {
-                    var response_length = response.length - 1;
-                    response = response.substring(0,response_length);
-                    bbconverter_success(response);
-                });
-            }
-
-            function bbconverter_stop() {
-                jQuery('#bbp-converter-start').show();
-                jQuery('#bbp-converter-stop').hide();
-                jQuery('#bbp-converter-progress').hide();
-                jQuery('#bbp-converter-message p').removeClass( 'loading' );
-                bbconverter_is_running = false;
-                clearTimeout( bbconverter_run_timer );
-            }
-
-            function bbconverter_success(response) {
-                bbconverter_log(response);
-
-                if ( response === '<p class="loading"><?php esc_html_e( 'Conversion Complete', 'bbpress' ); ?></p>' || response.indexOf('error') > -1 ) {
-                    bbconverter_log('<p>Repair any missing information: <a href="<?php echo admin_url(); ?>tools.php?page=bbp-repair">Continue</a></p>');
-                    bbconverter_stop();
-                } else if( bbconverter_is_running ) { // keep going
-                    jQuery('#bbp-converter-progress').show();
-                    clearTimeout( bbconverter_run_timer );
-                    bbconverter_run_timer = setTimeout( 'bbconverter_run()', bbconverter_delay_time );
-                } else {
-                    bbconverter_stop();
-                }
-            }
-
-            function bbconverter_log(text) {
-                if ( jQuery('#bbp-converter-message').css('display') === 'none' ) {
-                    jQuery('#bbp-converter-message').show();
-                }
-                if ( text ) {
-                    jQuery('#bbp-converter-message p').removeClass( 'loading' );
-                    jQuery('#bbp-converter-message').prepend( text );
-                }
-            }
-
-        </script>
-
-        <?php
-    }
-
-    /**
-     * Wrap the converter output in paragraph tags, so styling can be applied
-     *
-     * @since 2.1.0 bbPress (r4052)
-     *
-     * @param string $output
-     */
-    private static function converter_output( $output = '' ) {
-
-        // Get the last query
-        $before = '<p class="loading">';
-        $after  = '</p>';
-        $query  = get_option( '_bbp_converter_query' );
-
-        if ( ! empty( $query ) ) {
-            $before = '<p class="loading" title="' . esc_attr( $query ) . '">';
-        }
-
-        echo $before . $output . $after;
-    }
-
-    /**
-     * Callback processor
-     *
-     * @since 2.1.0 bbPress (r3813)
-     */
-    public function process_callback() {
-
-        // Bail if user cannot view import page
-        if ( ! current_user_can( 'bbp_tools_import_page' ) ) {
-            wp_die( '0' );
-        }
-
-        // Verify intent
-        check_ajax_referer( 'bbp_converter_process' );
-
-        if ( ! ini_get( 'safe_mode' ) ) {
-            set_time_limit( 0 );
-            ini_set( 'memory_limit',   '256M' );
-            ini_set( 'implicit_flush', '1'    );
-            ignore_user_abort( true );
-        }
-
-        // Save step and count so that it can be restarted.
-        if ( ! get_option( '_bbp_converter_step' ) || ( ! empty( $_POST['_bbp_converter_restart'] ) ) ) {
-            update_option( '_bbp_converter_step',  1 );
-            update_option( '_bbp_converter_start', 0 );
-        }
-
-        $step  = (int) get_option( '_bbp_converter_step',  1 );
-        $min   = (int) get_option( '_bbp_converter_start', 0 );
-        $count = (int) ! empty( $_POST['_bbp_converter_rows'] ) ? $_POST['_bbp_converter_rows'] : 100;
-        $max   = ( $min + $count ) - 1;
-        $start = $min;
-
-        // Bail if platform did not get saved
-        $platform = ! empty( $_POST['_bbp_converter_platform' ] ) ? $_POST['_bbp_converter_platform' ] : get_option( '_bbp_converter_platform' );
-        if ( empty( $platform ) ) {
-            return;
-        }
-
-        // Include the appropriate converter.
-        $converter = bbp_new_converter( $platform );
-
-        switch ( $step ) {
-
-            // STEP 1. Clean all tables.
-            case 1 :
-                if ( ! empty( $_POST['_bbp_converter_clean'] ) ) {
-                    if ( $converter->clean( $start ) ) {
-                        update_option( '_bbp_converter_step',  $step + 1 );
-                        update_option( '_bbp_converter_start', 0         );
-                        $this->sync_table( true );
-                        if ( empty( $start ) ) {
-                            $this->converter_output( __( 'No data to clean', 'bbpress' ) );
-                        }
-                    } else {
-                        update_option( '_bbp_converter_start', $max + 1 );
-                        $this->converter_output( sprintf( __( 'Deleting previously converted data (%1$s - %2$s)', 'bbpress' ), $min, $max ) );
-                    }
-                } else {
-                    update_option( '_bbp_converter_step',  $step + 1 );
-                    update_option( '_bbp_converter_start', 0         );
-                }
-
-                break;
-
-            // STEP 2. Convert users.
-            case 2 :
-                if ( ! empty( $_POST['_bbp_converter_convert_users'] ) ) {
-                    if ( $converter->convert_users( $start ) ) {
-                        update_option( '_bbp_converter_step',  $step + 1 );
-                        update_option( '_bbp_converter_start', 0         );
-                        if ( empty( $start ) ) {
-                            $this->converter_output( __( 'No users to convert', 'bbpress' ) );
-                        }
-                    } else {
-                        update_option( '_bbp_converter_start', $max + 1 );
-                        $this->converter_output( sprintf(  __( 'Converting users (%1$s - %2$s)', 'bbpress' ), $min, $max ) );
-                    }
-                } else {
-                    update_option( '_bbp_converter_step',  $step + 1 );
-                    update_option( '_bbp_converter_start', 0         );
-                }
-
-                break;
-
-            // STEP 3. Clean passwords.
-            case 3 :
-                if ( ! empty( $_POST['_bbp_converter_convert_users'] ) ) {
-                    if ( $converter->clean_passwords( $start ) ) {
-                        update_option( '_bbp_converter_step',  $step + 1 );
-                        update_option( '_bbp_converter_start', 0         );
-                        if ( empty( $start ) ) {
-                            $this->converter_output( __( 'No passwords to clear', 'bbpress' ) );
-                        }
-                    } else {
-                        update_option( '_bbp_converter_start', $max + 1 );
-                        $this->converter_output( sprintf( __( 'Delete users WordPress default passwords (%1$s - %2$s)', 'bbpress' ), $min, $max ) );
-                    }
-                } else {
-                    update_option( '_bbp_converter_step',  $step + 1 );
-                    update_option( '_bbp_converter_start', 0         );
-                }
-
-                break;
-
-            // STEP 4. Convert forums.
-            case 4 :
-                if ( $converter->convert_forums( $start ) ) {
-                    update_option( '_bbp_converter_step',  $step + 1 );
-                    update_option( '_bbp_converter_start', 0         );
-                    if ( empty( $start ) ) {
-                        $this->converter_output( __( 'No forums to convert', 'bbpress' ) );
-                    }
-                } else {
-                    update_option( '_bbp_converter_start', $max + 1 );
-                    $this->converter_output( sprintf( __( 'Converting forums (%1$s - %2$s)', 'bbpress' ), $min, $max ) );
-                }
-
-                break;
-
-            // STEP 5. Convert forum parents.
-            case 5 :
-                if ( $converter->convert_forum_parents( $start ) ) {
-                    update_option( '_bbp_converter_step',  $step + 1 );
-                    update_option( '_bbp_converter_start', 0         );
-                    if ( empty( $start ) ) {
-                        $this->converter_output( __( 'No forum parents to convert', 'bbpress' ) );
-                    }
-                } else {
-                    update_option( '_bbp_converter_start', $max + 1 );
-                    $this->converter_output( sprintf( __( 'Calculating forum hierarchy (%1$s - %2$s)', 'bbpress' ), $min, $max ) );
-                }
-
-                break;
-
-            // STEP 6. Convert forum subscriptions.
-            case 6 :
-                if ( $converter->convert_forum_subscriptions( $start ) ) {
-                    update_option( '_bbp_converter_step',  $step + 1 );
-                    update_option( '_bbp_converter_start', 0         );
-                    if ( empty( $start ) ) {
-                        $this->converter_output( __( 'No forum subscriptions to convert', 'bbpress' ) );
-                    }
-                } else {
-                    update_option( '_bbp_converter_start', $max + 1 );
-                    $this->converter_output( sprintf( __( 'Converting forum subscriptions (%1$s - %2$s)', 'bbpress' ), $min, $max ) );
-                }
-
-                break;
-
-            // STEP 7. Convert topics.
-            case 7 :
-                if ( $converter->convert_topics( $start ) ) {
-                    update_option( '_bbp_converter_step',  $step + 1 );
-                    update_option( '_bbp_converter_start', 0         );
-                    if ( empty( $start ) ) {
-                        $this->converter_output( __( 'No topics to convert', 'bbpress' ) );
-                    }
-                } else {
-                    update_option( '_bbp_converter_start', $max + 1 );
-                    $this->converter_output( sprintf( __( 'Converting topics (%1$s - %2$s)', 'bbpress' ), $min, $max ) );
-                }
-
-                break;
-
-            // STEP 8. Convert anonymous topic authors.
-            case 8 :
-                if ( $converter->convert_anonymous_topic_authors( $start ) ) {
-                    update_option( '_bbp_converter_step',  $step + 1 );
-                    update_option( '_bbp_converter_start', 0         );
-                    if ( empty( $start ) ) {
-                        $this->converter_output( __( 'No anonymous topic authors to convert', 'bbpress' ) );
-                    }
-                } else {
-                    update_option( '_bbp_converter_start', $max + 1 );
-                    $this->converter_output( sprintf( __( 'Converting anonymous topic authors (%1$s - %2$s)', 'bbpress' ), $min, $max ) );
-                }
-
-                break;
-
-            // STEP 9. Stick topics.
-            case 9 :
-                if ( $converter->convert_topic_stickies( $start ) ) {
-                    update_option( '_bbp_converter_step',  $step + 1 );
-                    update_option( '_bbp_converter_start', 0         );
-                    if ( empty( $start ) ) {
-                        $this->converter_output( __( 'No stickies to stick', 'bbpress' ) );
-                    }
-                } else {
-                    update_option( '_bbp_converter_start', $max + 1 );
-                    $this->converter_output( sprintf( __( 'Calculating topic stickies (%1$s - %2$s)', 'bbpress' ), $min, $max ) );
-                }
-
-                break;
-
-            // STEP 10. Stick to front topics (Super Sicky).
-            case 10 :
-                if ( $converter->convert_topic_super_stickies( $start ) ) {
-                    update_option( '_bbp_converter_step',  $step + 1 );
-                    update_option( '_bbp_converter_start', 0         );
-                    if ( empty( $start ) ) {
-                        $this->converter_output( __( 'No super stickies to stick', 'bbpress' ) );
-                    }
-                } else {
-                    update_option( '_bbp_converter_start', $max + 1 );
-                    $this->converter_output( sprintf( __( 'Calculating topic super stickies (%1$s - %2$s)', 'bbpress' ), $min, $max ) );
-                }
-
-                break;
-
-            // STEP 11. Closed topics.
-            case 11 :
-                if ( $converter->convert_topic_closed_topics( $start ) ) {
-                    update_option( '_bbp_converter_step',  $step + 1 );
-                    update_option( '_bbp_converter_start', 0         );
-                    if ( empty( $start ) ) {
-                        $this->converter_output( __( 'No closed topics to close', 'bbpress' ) );
-                    }
-                } else {
-                    update_option( '_bbp_converter_start', $max + 1 );
-                    $this->converter_output( sprintf( __( 'Calculating closed topics (%1$s - %2$s)', 'bbpress' ), $min, $max ) );
-                }
-
-                break;
-
-            // STEP 12. Convert topic tags.
-            case 12 :
-                if ( $converter->convert_tags( $start ) ) {
-                    update_option( '_bbp_converter_step',  $step + 1 );
-                    update_option( '_bbp_converter_start', 0         );
-                    if ( empty( $start ) ) {
-                        $this->converter_output( __( 'No topic tags to convert', 'bbpress' ) );
-                    }
-                } else {
-                    update_option( '_bbp_converter_start', $max + 1 );
-                    $this->converter_output( sprintf( __( 'Converting topic tags (%1$s - %2$s)', 'bbpress' ), $min, $max ) );
-                }
-
-                break;
-
-            // STEP 13. Convert topic subscriptions.
-            case 13 :
-                if ( $converter->convert_topic_subscriptions( $start ) ) {
-                    update_option( '_bbp_converter_step',  $step + 1 );
-                    update_option( '_bbp_converter_start', 0         );
-                    if ( empty( $start ) ) {
-                        $this->converter_output( __( 'No topic subscriptions to convert', 'bbpress' ) );
-                    }
-                } else {
-                    update_option( '_bbp_converter_start', $max + 1 );
-                    $this->converter_output( sprintf( __( 'Converting topic subscriptions (%1$s - %2$s)', 'bbpress' ), $min, $max ) );
-                }
-
-                break;
-
-            // STEP 14. Convert topic favorites.
-            case 14 :
-                if ( $converter->convert_favorites( $start ) ) {
-                    update_option( '_bbp_converter_step',  $step + 1 );
-                    update_option( '_bbp_converter_start', 0         );
-                    if ( empty( $start ) ) {
-                        $this->converter_output( __( 'No favorites to convert', 'bbpress' ) );
-                    }
-                } else {
-                    update_option( '_bbp_converter_start', $max + 1 );
-                    $this->converter_output( sprintf( __( 'Converting favorites (%1$s - %2$s)', 'bbpress' ), $min, $max ) );
-                }
-
-                break;
-
-            // STEP 15. Convert replies.
-            case 15 :
-                if ( $converter->convert_replies( $start ) ) {
-                    update_option( '_bbp_converter_step',  $step + 1 );
-                    update_option( '_bbp_converter_start', 0         );
-                    if ( empty( $start ) ) {
-                        $this->converter_output( __( 'No replies to convert', 'bbpress' ) );
-                    }
-                } else {
-                    update_option( '_bbp_converter_start', $max + 1 );
-                    $this->converter_output( sprintf( __( 'Converting replies (%1$s - %2$s)', 'bbpress' ), $min, $max ) );
-                }
-
-                break;
-
-            // STEP 16. Convert anonymous reply authors.
-            case 16 :
-                if ( $converter->convert_anonymous_reply_authors( $start ) ) {
-                    update_option( '_bbp_converter_step',  $step + 1 );
-                    update_option( '_bbp_converter_start', 0         );
-                    if ( empty( $start ) ) {
-                        $this->converter_output( __( 'No anonymous reply authors to convert', 'bbpress' ) );
-                    }
-                } else {
-                    update_option( '_bbp_converter_start', $max + 1 );
-                    $this->converter_output( sprintf( __( 'Converting anonymous reply authors (%1$s - %2$s)', 'bbpress' ), $min, $max ) );
-                }
-
-                break;
-
-            // STEP 17. Convert threaded replies parents.
-            case 17 :
-                if ( $converter->convert_reply_to_parents( $start ) ) {
-                    update_option( '_bbp_converter_step',  $step + 1 );
-                    update_option( '_bbp_converter_start', 0         );
-                    if ( empty( $start ) ) {
-                        $this->converter_output( __( 'No threaded replies to convert', 'bbpress' ) );
-                    }
-                } else {
-                    update_option( '_bbp_converter_start', $max + 1 );
-                    $this->converter_output( sprintf( __( 'Calculating threaded replies parents (%1$s - %2$s)', 'bbpress' ), $min, $max ) );
-                }
-
-                break;
-
-            default :
-                delete_option( '_bbp_converter_step'  );
-                delete_option( '_bbp_converter_start' );
-                delete_option( '_bbp_converter_query' );
-
-                $this->converter_output( __( 'Conversion Complete', 'bbpress' ) );
-
-                break;
-        }
-    }
-
-    /**
-     * Create Tables for fast syncing
-     *
-     * @since 2.1.0 bbPress (r3813)
-     */
-    public function sync_table( $drop = false ) {
-
-        $bbp_db     = bbp_db();
-        $table_name = $bbp_db->prefix . 'bbp_converter_translator';
-        if ( ! empty( $drop ) && $bbp_db->get_var( "SHOW TABLES LIKE '{$table_name}'" ) === $table_name ) {
-            $bbp_db->query( "DROP TABLE {$table_name}" );
-        }
-
-        require_once ABSPATH . '/wp-admin/includes/upgrade.php';
-
-        if ( ! empty( $bbp_db->charset ) ) {
-            $charset_collate = "DEFAULT CHARACTER SET $bbp_db->charset";
-        }
-
-        if ( ! empty( $bbp_db->collate ) ) {
-            $charset_collate .= " COLLATE $bbp_db->collate";
-        }
-
-        $sql = array();
-        $max_index_length = 191;
-
-        /** Translator ********************************************************/
-
-        $sql[] = "CREATE TABLE {$table_name} (
-                    meta_id mediumint(8) unsigned not null auto_increment,
-                    value_type varchar(25) null,
-                    value_id bigint(20) unsigned not null default '0',
-                    meta_key varchar(255) null,
-                    meta_value varchar(255) null,
-                PRIMARY KEY (meta_id),
-                    KEY value_id (value_id),
-                    KEY meta_join (meta_key({$max_index_length}), meta_value({$max_index_length}))
-                ) {$charset_collate}";
-
-        dbDelta( $sql );
-    }
-}
-
-/**
- * Base class to be extended by specific individual importers
- *
- * @since 2.1.0 bbPress (r3813)
- */
-abstract class BBP_Converter_Base {
-
-    /**
-     * @var array() This is the field mapping array to process.
-     */
-    protected $field_map = array();
-
-    /**
-     * @var object This is the connection to the WordPress database.
-     */
-    protected $wpdb;
-
-    /**
-     * @var object This is the connection to the other platforms database.
-     */
-    protected $opdb;
-
-    /**
-     * @var int This is the max rows to process at a time.
-     */
-    public $max_rows;
-
-    /**
-     * @var array() Map of topic to forum.  It is for optimization.
-     */
-    private $map_topicid_to_forumid = array();
-
-    /**
-     * @var array() Map of from old forum ids to new forum ids.  It is for optimization.
-     */
-    private $map_forumid = array();
-
-    /**
-     * @var array() Map of from old topic ids to new topic ids.  It is for optimization.
-     */
-    private $map_topicid = array();
-
-    /**
-     * @var array() Map of from old reply_to ids to new reply_to ids.  It is for optimization.
-     */
-    private $map_reply_to = array();
-
-    /**
-     * @var array() Map of from old user ids to new user ids.  It is for optimization.
-     */
-    private $map_userid = array();
-
-    /**
-     * @var str This is the charset for your wp database.
-     */
-    public $charset;
-
-    /**
-     * @var boolean Sync table available.
-     */
-    public $sync_table = false;
-
-    /**
-     * @var str Sync table name.
-     */
-    public $sync_table_name;
-
-    /** Methods ***************************************************************/
-
-    /**
-     * This is the constructor and it connects to the platform databases.
-     */
-    public function __construct() {
-        $this->setup_globals();
-    }
-
-    private function setup_globals() {
-
-        /** Get database connections ******************************************/
-
-        $this->wpdb         = bbp_db();
-        $this->max_rows     = (int) $_POST['_bbp_converter_rows'];
-        $this->opdb         = new wpdb( $_POST['_bbp_converter_db_user'], $_POST['_bbp_converter_db_pass'], $_POST['_bbp_converter_db_name'], $_POST['_bbp_converter_db_server'] );
-        $this->opdb->prefix = $_POST['_bbp_converter_db_prefix'];
-
-        /**
-         * Error Reporting
-         */
-        $this->wpdb->show_errors();
-        $this->opdb->show_errors();
-
-        /**
-         * Syncing
-         */
-        $this->sync_table_name = $this->wpdb->prefix . 'bbp_converter_translator';
-        if ( $this->wpdb->get_var( "SHOW TABLES LIKE '" . $this->sync_table_name . "'" ) === $this->sync_table_name ) {
-            $this->sync_table = true;
-        } else {
-            $this->sync_table = false;
-        }
-
-        /**
-         * Character set
-         */
-        if ( empty( $this->wpdb->charset ) ) {
-            $this->charset = 'UTF8';
-        } else {
-            $this->charset = $this->wpdb->charset;
-        }
-
-        /**
-         * Default mapping.
-         */
-
-        /** Forum Section *****************************************************/
-
-        $this->field_map[] = array(
-            'to_type'      => 'forum',
-            'to_fieldname' => 'post_status',
-            'default'      => 'publish'
-        );
-        $this->field_map[] = array(
-            'to_type'      => 'forum',
-            'to_fieldname' => 'comment_status',
-            'default'      => 'closed'
-        );
-        $this->field_map[] = array(
-            'to_type'      => 'forum',
-            'to_fieldname' => 'ping_status',
-            'default'      => 'closed'
-        );
-        $this->field_map[] = array(
-            'to_type'      => 'forum',
-            'to_fieldname' => 'post_type',
-            'default'      => 'forum'
-        );
-
-        /** Topic Section *****************************************************/
-
-        $this->field_map[] = array(
-            'to_type'      => 'topic',
-            'to_fieldname' => 'post_status',
-            'default'      => 'publish'
-        );
-        $this->field_map[] = array(
-            'to_type'      => 'topic',
-            'to_fieldname' => 'comment_status',
-            'default'      => 'closed'
-        );
-        $this->field_map[] = array(
-            'to_type'      => 'topic',
-            'to_fieldname' => 'ping_status',
-            'default'      => 'closed'
-        );
-        $this->field_map[] = array(
-            'to_type'      => 'topic',
-            'to_fieldname' => 'post_type',
-            'default'      => 'topic'
-        );
-
-        /** Post Section ******************************************************/
-
-        $this->field_map[] = array(
-            'to_type'      => 'reply',
-            'to_fieldname' => 'post_status',
-            'default'      => 'publish'
-        );
-        $this->field_map[] = array(
-            'to_type'      => 'reply',
-            'to_fieldname' => 'comment_status',
-            'default'      => 'closed'
-        );
-        $this->field_map[] = array(
-            'to_type'      => 'reply',
-            'to_fieldname' => 'ping_status',
-            'default'      => 'closed'
-        );
-        $this->field_map[] = array(
-            'to_type'      => 'reply',
-            'to_fieldname' => 'post_type',
-            'default'      => 'reply'
-        );
-
-        /** User Section ******************************************************/
-
-        $this->field_map[] = array(
-            'to_type'      => 'user',
-            'to_fieldname' => 'role',
-            'default'      => get_option( 'default_role' )
-        );
-    }
-
-    /**
-     * Convert Forums
-     */
-    public function convert_forums( $start = 1 ) {
-        return $this->convert_table( 'forum', $start );
-    }
-
-    /**
-     * Convert Topics / Threads
-     */
-    public function convert_topics( $start = 1 ) {
-        return $this->convert_table( 'topic', $start );
-    }
-
-    /**
-     * Convert Posts
-     */
-    public function convert_replies( $start = 1 ) {
-        return $this->convert_table( 'reply', $start );
-    }
-
-    /**
-     * Convert Users
-     */
-    public function convert_users( $start = 1 ) {
-        return $this->convert_table( 'user', $start );
-    }
-
-    /**
-     * Convert Topic Tags
-     */
-    public function convert_tags( $start = 1 ) {
-        return $this->convert_table( 'tags', $start );
-    }
-
-    /**
-     * Convert Forum Subscriptions
-     */
-    public function convert_forum_subscriptions( $start = 1 ) {
-        return $this->convert_table( 'forum_subscriptions', $start );
-    }
-
-    /**
-     * Convert Topic Subscriptions
-     */
-    public function convert_topic_subscriptions( $start = 1 ) {
-        return $this->convert_table( 'topic_subscriptions', $start );
-    }
-
-    /**
-     * Convert Favorites
-     */
-    public function convert_favorites( $start = 1 ) {
-        return $this->convert_table( 'favorites', $start );
-    }
-
-    /**
-     * Convert Table
-     *
-     * @param string to type
-     * @param int Start row
-     */
-    public function convert_table( $to_type, $start ) {
-
-        // Are we usig a sync table, or postmeta?
-        if ( $this->wpdb->get_var( "SHOW TABLES LIKE '" . $this->sync_table_name . "'" ) === $this->sync_table_name ) {
-            $this->sync_table = true;
-        } else {
-            $this->sync_table = false;
-        }
-
-        // Set some defaults
-        $has_insert     = false;
-        $from_tablename = '';
-        $field_list     = $from_tables = $tablefield_array = array();
-
-        // Toggle Table Name based on $to_type (destination)
-        switch ( $to_type ) {
-            case 'user' :
-                $tablename = $this->wpdb->users;
-                break;
-
-            case 'tags' :
-                $tablename = '';
-                break;
-
-            case 'forum_subscriptions' :
-                $tablename = $this->wpdb->postmeta;
-                break;
-
-            case 'topic_subscriptions' :
-                $tablename = $this->wpdb->postmeta;
-                break;
-
-            case 'favorites' :
-                $tablename = $this->wpdb->postmeta;
-                break;
-
-            default :
-                $tablename = $this->wpdb->posts;
-        }
-
-        // Get the fields from the destination table
-        if ( ! empty( $tablename ) ) {
-            $tablefield_array = $this->get_fields( $tablename );
-        }
-
-        /** Step 1 ************************************************************/
-
-        // Loop through the field maps, and look for to_type matches
-        foreach ( $this->field_map as $item ) {
-
-            // Yay a match, and we have a from table, too
-            if ( ( $item['to_type'] === $to_type ) && ! empty( $item['from_tablename'] ) ) {
-
-                // $from_tablename was set from a previous loop iteration
-                if ( ! empty( $from_tablename ) ) {
-
-                    // Doing some joining
-                    if ( ! in_array( $item['from_tablename'], $from_tables, true ) && in_array( $item['join_tablename'], $from_tables, true ) ) {
-                        $from_tablename .= ' ' . $item['join_type'] . ' JOIN ' . $this->opdb->prefix . $item['from_tablename'] . ' AS ' . $item['from_tablename'] . ' ' . $item['join_expression'];
-                    }
-
-                // $from_tablename needs to be set
-                } else {
-                    $from_tablename = $item['from_tablename'] . ' AS ' . $item['from_tablename'];
-                }
-
-                // Specific FROM expression data used
-                if ( ! empty( $item['from_expression'] ) ) {
-
-                    // No 'WHERE' in expression
-                    if ( stripos( $from_tablename, "WHERE" ) === false ) {
-                        $from_tablename .= ' ' . $item['from_expression'];
-
-                    // 'WHERE' in expression, so replace with 'AND'
-                    } else {
-                        $from_tablename .= ' ' . str_replace( "WHERE", "AND", $item['from_expression'] );
-                    }
-                }
-
-                // Add tablename and fieldname to arrays, formatted for querying
-                $from_tables[] = $item['from_tablename'];
-                $field_list[]  = 'convert(' . $item['from_tablename'] . '.' . $item['from_fieldname'] . ' USING "' . $this->charset . '") AS ' . $item['from_fieldname'];
-            }
-        }
-
-        /** Step 2 ************************************************************/
-
-        // We have a $from_tablename, so we want to get some data to convert
-        if ( ! empty( $from_tablename ) ) {
-
-            // Get some data from the old forums
-            $field_list  = array_unique( $field_list );
-            $fields      = implode( ',', $field_list );
-            $forum_query = "SELECT {$fields} FROM {$this->opdb->prefix}{$from_tablename} LIMIT {$start}, {$this->max_rows}";
-            $forum_array = $this->opdb->get_results( $forum_query, ARRAY_A );
-
-            // Set this query as the last one ran
-            update_option( '_bbp_converter_query', $forum_query );
-
-            // Query returned some results
-            if ( ! empty( $forum_array ) ) {
-
-                // Loop through results
-                foreach ( (array) $forum_array as $forum ) {
-
-                    // Reset some defaults
-                    $insert_post = $insert_postmeta = $insert_data = array();
-
-                    // Loop through field map, again...
-                    foreach ( $this->field_map as $row ) {
-
-                        // Types match and to_fieldname is present. This means
-                        // we have some work to do here.
-                        if ( ( $row['to_type'] === $to_type ) && isset( $row['to_fieldname'] ) ) {
-
-                            // This row has a destination that matches one of the
-                            // columns in this table.
-                            if ( in_array( $row['to_fieldname'], $tablefield_array, true ) ) {
-
-                                // Allows us to set default fields.
-                                if ( isset( $row['default'] ) ) {
-                                    $insert_post[ $row['to_fieldname'] ] = $row['default'];
-
-                                // Translates a field from the old forum.
-                                } elseif ( isset( $row['callback_method'] ) ) {
-                                    if ( ( 'callback_userid' === $row['callback_method'] ) && empty( $_POST['_bbp_converter_convert_users'] ) ) {
-                                        $insert_post[ $row['to_fieldname'] ] = $forum[ $row['from_fieldname'] ];
-                                    } else {
-                                        $insert_post[ $row['to_fieldname'] ] = call_user_func_array( array( $this, $row['callback_method'] ), array( $forum[ $row['from_fieldname'] ], $forum ) );
-                                    }
-
-                                // Maps the field from the old forum.
-                                } else {
-                                    $insert_post[ $row['to_fieldname'] ] = $forum[ $row['from_fieldname'] ];
-                                }
-
-                            // Destination field is not empty, so we might need
-                            // to do some extra work or set a default.
-                            } elseif ( ! empty( $row['to_fieldname'] ) ) {
-
-                                // Allows us to set default fields.
-                                if ( isset( $row['default'] ) ) {
-                                    $insert_postmeta[ $row['to_fieldname'] ] = $row['default'];
-
-                                // Translates a field from the old forum.
-                                } elseif ( isset( $row['callback_method'] ) ) {
-                                    if ( ( $row['callback_method'] === 'callback_userid' ) && ( 0 == $_POST['_bbp_converter_convert_users'] ) ) {
-                                        $insert_postmeta[ $row['to_fieldname'] ] = $forum[ $row['from_fieldname'] ];
-                                    } else {
-                                        $insert_postmeta[ $row['to_fieldname'] ] = call_user_func_array( array( $this, $row['callback_method'] ), array( $forum[ $row['from_fieldname'] ], $forum ) );
-                                    }
-
-                                // Maps the field from the old forum.
-                                } else {
-                                    $insert_postmeta[ $row['to_fieldname'] ] = $forum[ $row['from_fieldname'] ];
-                                }
-                            }
-                        }
-                    }
-
-                    /** Step 3 ************************************************/
-
-                    // Something to insert into the destination field
-                    if ( count( $insert_post ) > 0 || ( $to_type == 'tags' && count( $insert_postmeta ) > 0 ) ) {
-
-                        switch ( $to_type ) {
-
-                            /** New user **************************************/
-
-                            case 'user':
-                                if ( username_exists( $insert_post['user_login'] ) ) {
-                                    $insert_post['user_login'] = 'imported_' . $insert_post['user_login'];
-                                }
-
-                                if ( email_exists( $insert_post['user_email'] ) ) {
-                                    $insert_post['user_email'] = 'imported_' . $insert_post['user_email'];
-                                }
-
-                                $post_id = wp_insert_user( $insert_post );
-
-                                if ( is_numeric( $post_id ) ) {
-
-                                    foreach ( $insert_postmeta as $key => $value ) {
-
-                                        add_user_meta( $post_id, $key, $value, true );
-
-                                        if ( '_id' == substr( $key, -3 ) && ( true === $this->sync_table ) ) {
-                                            $this->wpdb->insert( $this->sync_table_name, array( 'value_type' => 'user', 'value_id' => $post_id, 'meta_key' => $key, 'meta_value' => $value ) );
-                                        }
-                                    }
-                                }
-                                break;
-
-                            /** New Topic-Tag *********************************/
-
-                            case 'tags':
-                                $post_id = wp_set_object_terms( $insert_postmeta['objectid'], $insert_postmeta['name'], 'topic-tag', true );
-                                $term = get_term_by( 'name', $insert_postmeta['name'], 'topic-tag');
-                                if ( false !== $term ) {
-                                    wp_update_term( $term->term_id, 'topic-tag', array(
-                                        'description' => $insert_postmeta['description'],
-                                        'slug'        => $insert_postmeta['slug']
-                                    ) );
-                                }
-                                break;
-
-                            /** Forum Subscriptions ***************************/
-
-                            case 'forum_subscriptions':
-                                $user_id = $insert_post['user_id'];
-                                $items   = wp_list_pluck( $insert_postmeta, '_bbp_forum_subscriptions' );
-                                if ( is_numeric( $user_id ) && ! empty( $items ) ) {
-                                    foreach ( $items as $value ) {
-
-                                        // Maybe string with commas
-                                        $value = is_string( $value )
-                                            ? explode( ',', $value )
-                                            : (array) $value;
-
-                                        // Add user ID to forums subscribed users
-                                        foreach ( $value as $fav ) {
-                                            bbp_add_user_forum_subscription( $user_id, $this->callback_forumid( $fav ) );
-                                        }
-                                    }
-                                }
-                                break;
-
-                            /** Subscriptions *********************************/
-
-                            case 'topic_subscriptions':
-                                $user_id = $insert_post['user_id'];
-                                $items   = wp_list_pluck( $insert_postmeta, '_bbp_subscriptions' );
-                                if ( is_numeric( $user_id ) && ! empty( $items ) ) {
-                                    foreach ( $items as $value ) {
-
-                                        // Maybe string with commas
-                                        $value = is_string( $value )
-                                            ? explode( ',', $value )
-                                            : (array) $value;
-
-                                        // Add user ID to topics subscribed users
-                                        foreach ( $value as $fav ) {
-                                            bbp_add_user_topic_subscription( $user_id, $this->callback_topicid( $fav ) );
-                                        }
-                                    }
-                                }
-                                break;
-
-                            /** Favorites *************************************/
-
-                            case 'favorites':
-                                $user_id = $insert_post['user_id'];
-                                $items   = wp_list_pluck( $insert_postmeta, '_bbp_favorites' );
-                                if ( is_numeric( $user_id ) && ! empty( $items ) ) {
-                                    foreach ( $items as $value ) {
-
-                                        // Maybe string with commas
-                                        $value = is_string( $value )
-                                            ? explode( ',', $value )
-                                            : (array) $value;
-
-                                        // Add user ID to topics favorited users
-                                        foreach ( $value as $fav ) {
-                                            bbp_add_user_favorite( $user_id, $this->callback_topicid( $fav ) );
-                                        }
-                                    }
-                                }
-                                break;
-
-                            /** Forum, Topic, Reply ***************************/
-
-                            default:
-                                $post_id = wp_insert_post( $insert_post );
-
-                                if ( is_numeric( $post_id ) ) {
-
-                                    foreach ( $insert_postmeta as $key => $value ) {
-
-                                        add_post_meta( $post_id, $key, $value, true );
-
-                                        /**
-                                         * If we are using the sync_table add
-                                         * the meta '_id' keys to the table
-                                         *
-                                         * Forums:  _bbp_old_forum_id         // The old forum ID
-                                         *          _bbp_old_forum_parent_id  // The old forum parent ID
-                                         *
-                                         * Topics:  _bbp_forum_id             // The new forum ID
-                                         *          _bbp_old_topic_id         // The old topic ID
-                                         *          _bbp_old_closed_status_id // The old topic open/closed status
-                                         *          _bbp_old_sticky_status_id // The old topic sticky status
-                                         *
-                                         * Replies: _bbp_forum_id             // The new forum ID
-                                         *          _bbp_topic_id             // The new topic ID
-                                         *          _bbp_old_reply_id         // The old reply ID
-                                         *          _bbp_old_reply_to_id      // The old reply to ID
-                                         */
-                                        if ( '_id' === substr( $key, -3 ) && ( true === $this->sync_table ) ) {
-                                            $this->wpdb->insert( $this->sync_table_name, array( 'value_type' => 'post', 'value_id' => $post_id, 'meta_key' => $key, 'meta_value' => $value ) );
-                                        }
-
-                                        /**
-                                         * Replies need to save their old reply_to ID for
-                                         * hierarchical replies association. Later we update
-                                         * the _bbp_reply_to value with the new bbPress
-                                         * value using convert_reply_to_parents()
-                                         */
-                                        if ( ( 'reply' === $to_type ) && ( '_bbp_old_reply_to_id' === $key ) ) {
-                                            add_post_meta( $post_id, '_bbp_reply_to', $value );
-                                        }
-                                    }
-                                }
-                                break;
-                        }
-                        $has_insert = true;
-                    }
-                }
-            }
-        }
-
-        return ! $has_insert;
-    }
-
-    /**
-     * This method converts old forum heirarchy to new bbPress heirarchy.
-     */
-    public function convert_forum_parents( $start ) {
-
-        $has_update = false;
-
-        if ( ! empty( $this->sync_table ) ) {
-            $query = $this->wpdb->prepare( "SELECT value_id, meta_value FROM {$this->sync_table_name} WHERE meta_key = %s AND meta_value > 0 LIMIT {$start}, {$this->max_rows}", '_bbp_old_forum_parent_id' );
-        } else {
-            $query = $this->wpdb->prepare( "SELECT post_id AS value_id, meta_value FROM {$this->wpdb->postmeta} WHERE meta_key = %s AND meta_value > 0 LIMIT {$start}, {$this->max_rows}", '_bbp_old_forum_parent_id' );
-        }
-
-        update_option( '_bbp_converter_query', $query );
-
-        $forum_array = $this->wpdb->get_results( $query );
-
-        foreach ( (array) $forum_array as $row ) {
-            $parent_id = $this->callback_forumid( $row->meta_value );
-            $this->wpdb->query( $this->wpdb->prepare( "UPDATE {$this->wpdb->posts} SET post_parent = %d WHERE ID = %d LIMIT 1", $parent_id, $row->value_id ) );
-            $has_update = true;
-        }
-
-        return ! $has_update;
-    }
-
-    /**
-     * This method converts old topic stickies to new bbPress stickies.
-     *
-     * @since 2.5.0 bbPress (r5170)
-     *
-     * @uses WPDB $wpdb
-     * @uses bbp_stick_topic() to set the imported topic as sticky
-     *
-     */
-    public function convert_topic_stickies( $start ) {
-
-        $has_update = false;
-
-        if ( ! empty( $this->sync_table ) ) {
-            $query = $this->wpdb->prepare( "SELECT value_id, meta_value FROM {$this->sync_table_name} WHERE meta_key = %s AND meta_value = %s LIMIT {$start}, {$this->max_rows}", '_bbp_old_sticky_status_id', 'sticky' );
-        } else {
-            $query = $this->wpdb->prepare( "SELECT post_id AS value_id, meta_value FROM {$this->wpdb->postmeta} WHERE meta_key = %s AND meta_value = %s LIMIT {$start}, {$this->max_rows}", '_bbp_old_sticky_status_id', 'sticky' );
-        }
-
-        update_option( '_bbp_converter_query', $query );
-
-        $sticky_array = $this->wpdb->get_results( $query );
-
-        foreach ( (array) $sticky_array as $row ) {
-            bbp_stick_topic( $row->value_id );
-            $has_update = true;
-        }
-
-        return ! $has_update;
-    }
-
-    /**
-     * This method converts old topic super stickies to new bbPress super stickies.
-     *
-     * @since 2.5.0 bbPress (r5170)
-     *
-     * @uses WPDB $wpdb
-     * @uses bbp_stick_topic() to set the imported topic as super sticky
-     *
-     */
-    public function convert_topic_super_stickies( $start ) {
-
-        $has_update = false;
-
-        if ( ! empty( $this->sync_table ) ) {
-            $query = $this->wpdb->prepare( "SELECT value_id, meta_value FROM {$this->sync_table_name} WHERE meta_key = %s AND meta_value = %s LIMIT {$start}, {$this->max_rows}", '_bbp_old_sticky_status_id', 'super-sticky' );
-        } else {
-            $query = $this->wpdb->prepare( "SELECT post_id AS value_id, meta_value FROM {$this->wpdb->postmeta} WHERE meta_key = %s AND meta_value = %s LIMIT {$start}, {$this->max_rows}", '_bbp_old_sticky_status_id', 'super-sticky' );
-        }
-
-        update_option( '_bbp_converter_query', $query );
-
-        $sticky_array = $this->wpdb->get_results( $query );
-
-        foreach ( (array) $sticky_array as $row ) {
-            $super = true;
-            bbp_stick_topic( $row->value_id, $super );
-            $has_update = true;
-        }
-
-        return ! $has_update;
-    }
-
-    /**
-     * This method converts old closed topics to bbPress closed topics.
-     *
-     * @since 2.6.0 bbPress (r5425)
-     *
-     * @uses bbp_close_topic() to close topics properly
-     *
-     */
-    public function convert_topic_closed_topics( $start ) {
-
-        $has_update = false;
-
-        if ( ! empty( $this->sync_table ) ) {
-            $query = $this->wpdb->prepare( "SELECT value_id, meta_value FROM {$this->sync_table_name} WHERE meta_key = %s AND meta_value = %s LIMIT {$start}, {$this->max_rows}", '_bbp_old_closed_status_id', 'closed' );
-        } else {
-            $query = $this->wpdb->prepare( "SELECT post_id AS value_id, meta_value FROM {$this->wpdb->postmeta} WHERE meta_key = %s AND meta_value = %s LIMIT {$start}, {$this->max_rows}", '_bbp_old_closed_status_id', 'closed' );
-        }
-
-        update_option( '_bbp_converter_query', $query );
-
-        $closed_topic = $this->wpdb->get_results( $query );
-
-        foreach ( (array) $closed_topic as $row ) {
-            bbp_close_topic( $row->value_id );
-            $has_update = true;
-        }
-
-        return ! $has_update;
-    }
-
-    /**
-     * This method converts old reply_to post id to new bbPress reply_to post id.
-     *
-     * @since 2.4.0 bbPress (r5093)
-     */
-    public function convert_reply_to_parents( $start ) {
-
-        $has_update = false;
-
-        if ( ! empty( $this->sync_table ) ) {
-            $query = $this->wpdb->prepare( "SELECT value_id, meta_value FROM {$this->sync_table_name} WHERE meta_key = %s AND meta_value > 0 LIMIT {$start}, {$this->max_rows}", '_bbp_old_reply_to_id' );
-        } else {
-            $query = $this->wpdb->prepare( "SELECT post_id AS value_id, meta_value FROM {$this->wpdb->postmeta} WHERE meta_key = %s AND meta_value > 0 LIMIT {$start}, {$this->max_rows}", '_bbp_old_reply_to_id' );
-        }
-
-        update_option( '_bbp_converter_query', $query );
-
-        $reply_to_array = $this->wpdb->get_results( $query );
-
-        foreach ( (array) $reply_to_array as $row ) {
-            $reply_to = $this->callback_reply_to( $row->meta_value );
-            $this->wpdb->query( $this->wpdb->prepare( "UPDATE {$this->wpdb->postmeta} SET meta_value = %s WHERE meta_key = %s AND post_id = %d LIMIT 1", $reply_to, '_bbp_reply_to', $row->value_id ) );
-            $has_update = true;
-        }
-
-        return ! $has_update;
-    }
-
-    /**
-     * This method converts anonymous topics.
-     *
-     * @since 2.6.0 bbPress (r5538)
-     *
-     * @uses add_post_meta() To add _bbp_anonymous_name topic meta key
-     */
-    public function convert_anonymous_topic_authors( $start ) {
-
-        $has_update = false;
-
-        if ( ! empty( $this->sync_table ) ) {
-            $query = $this->wpdb->prepare( "SELECT sync_table1.value_id AS topic_id, sync_table1.meta_value AS topic_is_anonymous, sync_table2.meta_value AS topic_author
-                            FROM {$this->sync_table_name} AS sync_table1
-                            INNER JOIN {$this->sync_table_name} AS sync_table2
-                            ON ( sync_table1.value_id = sync_table2.value_id )
-                            WHERE sync_table1.meta_value = %s
-                            AND sync_table2.meta_key = %s
-                            LIMIT {$start}, {$this->max_rows}", 'true', '_bbp_old_topic_author_name_id' );
-        } else {
-            $query = $this->wpdb->prepare( "SELECT wp_postmeta1.post_id AS topic_id, wp_postmeta1.meta_value AS topic_is_anonymous, wp_postmeta2.meta_value AS topic_author
-                            FROM {$this->wpdb->postmeta} AS wp_postmeta1
-                            INNER JOIN {$this->wpdb->postmeta} AS wp_postmeta2
-                            ON ( wp_postmeta1.post_id = wp_postmeta2.post_id )
-                            WHERE wp_postmeta1.meta_value = %s
-                            AND wp_postmeta2.meta_key = %s
-                            LIMIT {$start}, {$this->max_rows}", 'true', '_bbp_old_topic_author_name_id' );
-
-        }
-
-        update_option( '_bbp_converter_query', $query );
-
-        $anonymous_topics = $this->wpdb->get_results( $query );
-
-        foreach ( (array) $anonymous_topics as $row ) {
-            $anonymous_topic_author_id = 0;
-            $this->wpdb->query( $this->wpdb->prepare( "UPDATE {$this->wpdb->posts} SET post_author = %d WHERE ID = %d LIMIT 1", $anonymous_topic_author_id, $row->topic_id ) );
-
-            add_post_meta( $row->topic_id, '_bbp_anonymous_name', $row->topic_author );
-
-            $has_update = true;
-        }
-
-        return ! $has_update;
-    }
-
-    /**
-     * This method converts anonymous replies.
-     *
-     * @since 2.6.0 bbPress (r5538)
-     *
-     * @uses add_post_meta() To add _bbp_anonymous_name reply meta key
-     */
-    public function convert_anonymous_reply_authors( $start ) {
-
-        $has_update = false;
-
-        if ( ! empty( $this->sync_table ) ) {
-            $query = $this->wpdb->prepare( "SELECT sync_table1.value_id AS reply_id, sync_table1.meta_value AS reply_is_anonymous, sync_table2.meta_value AS reply_author
-                            FROM {$this->sync_table_name} AS sync_table1
-                            INNER JOIN {$this->sync_table_name} AS sync_table2
-                            ON ( sync_table1.value_id = sync_table2.value_id )
-                            WHERE sync_table1.meta_value = %s
-                            AND sync_table2.meta_key = %s
-                            LIMIT {$start}, {$this->max_rows}", 'true', '_bbp_old_reply_author_name_id' );
-        } else {
-            $query = $this->wpdb->prepare( "SELECT wp_postmeta1.post_id AS reply_id, wp_postmeta1.meta_value AS reply_is_anonymous, wp_postmeta2.meta_value AS reply_author
-                            FROM {$this->wpdb->postmeta} AS wp_postmeta1
-                            INNER JOIN {$this->wpdb->postmeta} AS wp_postmeta2
-                            ON ( wp_postmeta1.post_id = wp_postmeta2.post_id )
-                            WHERE wp_postmeta1.meta_value = %s
-                            AND wp_postmeta2.meta_key = %s
-                            LIMIT {$start}, {$this->max_rows}", 'true', '_bbp_old_reply_author_name_id' );
-
-        }
-
-        update_option( '_bbp_converter_query', $query );
-
-        $anonymous_replies = $this->wpdb->get_results( $query );
-
-        foreach ( (array) $anonymous_replies as $row ) {
-            $anonymous_reply_author_id = 0;
-            $this->wpdb->query( $this->wpdb->prepare( "UPDATE {$this->wpdb->posts} SET post_author = %d WHERE ID = %d LIMIT 1", $anonymous_reply_author_id, $row->reply_id ) );
-
-            add_post_meta( $row->reply_id, '_bbp_anonymous_name', $row->reply_author );
-
-            $has_update = true;
-        }
-
-        return ! $has_update;
-    }
-
-    /**
-     * This method deletes data from the wp database.
-     */
-    public function clean( $start ) {
-
-        $start      = 0;
-        $has_delete = false;
-
-        /** Delete bbconverter topics/forums/posts ****************************/
-
-        if ( true === $this->sync_table ) {
-            $query = $this->wpdb->prepare( "SELECT value_id FROM {$this->sync_table_name} INNER JOIN {$this->wpdb->posts} ON(value_id = ID) WHERE meta_key LIKE '_bbp_%' AND value_type = %s GROUP BY value_id ORDER BY value_id DESC LIMIT {$this->max_rows}", 'post' );
-        } else {
-            $query = $this->wpdb->prepare( "SELECT post_id AS value_id FROM {$this->wpdb->postmeta} WHERE meta_key LIKE '_bbp_%' GROUP BY post_id ORDER BY post_id DESC LIMIT {$this->max_rows}" );
-        }
-
-        update_option( '_bbp_converter_query', $query );
-
-        $posts = $this->wpdb->get_results( $query, ARRAY_A );
-
-        if ( isset( $posts[0] ) && ! empty( $posts[0]['value_id'] ) ) {
-            foreach ( (array) $posts as $value ) {
-                wp_delete_post( $value['value_id'], true );
-            }
-            $has_delete = true;
-        }
-
-        /** Delete bbconverter users ******************************************/
-
-        if ( true === $this->sync_table ) {
-            $query = $this->wpdb->prepare( "SELECT value_id FROM {$this->sync_table_name} INNER JOIN {$this->wpdb->users} ON(value_id = ID) WHERE meta_key = %s AND value_type = %s LIMIT {$this->max_rows}", '_bbp_old_user_id', 'user' );
-        } else {
-            $query = $this->wpdb->prepare( "SELECT user_id AS value_id FROM {$this->wpdb->usermeta} WHERE meta_key = %s LIMIT {$this->max_rows}", '_bbp_old_user_id' );
-        }
-
-        update_option( '_bbp_converter_query', $query );
-
-        $users = $this->wpdb->get_results( $query, ARRAY_A );
-
-        if ( ! empty( $users ) ) {
-            foreach ( $users as $value ) {
-                wp_delete_user( $value['value_id'] );
-            }
-            $has_delete = true;
-        }
-
-        unset( $posts );
-        unset( $users );
-
-        return ! $has_delete;
-    }
-
-    /**
-     * This method deletes passwords from the wp database.
-     *
-     * @param int Start row
-     */
-    public function clean_passwords( $start ) {
-
-        $has_delete = false;
-
-        /** Delete bbconverter passwords **************************************/
-
-        $query       = $this->wpdb->prepare( "SELECT user_id, meta_value FROM {$this->wpdb->usermeta} WHERE meta_key = %s LIMIT {$start}, {$this->max_rows}", '_bbp_password' );
-        update_option( '_bbp_converter_query', $query );
-
-        $bbconverter = $this->wpdb->get_results( $query, ARRAY_A );
-
-        if ( ! empty( $bbconverter ) ) {
-
-            foreach ( $bbconverter as $value ) {
-                if ( is_serialized( $value['meta_value'] ) ) {
-                    $this->wpdb->query( $this->wpdb->prepare( "UPDATE {$this->wpdb->users} SET user_pass = '' WHERE ID = %d", $value['user_id'] ) );
-                } else {
-                    $this->wpdb->query( $this->wpdb->prepare( "UPDATE {$this->wpdb->users} SET user_pass = %s WHERE ID = %d", $value['meta_value'], $value['user_id'] ) );
-                    $this->wpdb->query( $this->wpdb->prepare( "DELETE FROM {$this->wpdb->usermeta} WHERE meta_key = %s AND user_id = %d", '_bbp_password', $value['user_id'] ) );
-                }
-            }
-            $has_delete = true;
-        }
-
-        return ! $has_delete;
-    }
-
-    /**
-     * This method implements the authentication for the different forums.
-     *
-     * @param string Unencoded password.
-     */
-    abstract protected function authenticate_pass( $password, $hash );
-
-    /**
-     * Info
-     */
-    abstract protected function info();
-
-    /**
-     * This method grabs appropriate fields from the table specified
-     *
-     * @param string The table name to grab fields from
-     */
-    private function get_fields( $tablename ) {
-        $rval        = array();
-        $field_array = $this->wpdb->get_results( 'DESCRIBE ' . $tablename, ARRAY_A );
-
-        foreach ( $field_array as $field ) {
-            $rval[] = $field['Field'];
-        }
-
-        if ( $tablename === $this->wpdb->users ) {
-            $rval[] = 'role';
-            $rval[] = 'yim';
-            $rval[] = 'aim';
-            $rval[] = 'jabber';
-        }
-
-        return $rval;
-    }
-
-    /** Callbacks *************************************************************/
-
-    /**
-     * Run password through wp_hash_password()
-     *
-     * @param string $username
-     * @param string $password
-     */
-    public function callback_pass( $username, $password ) {
-        $user = $this->wpdb->get_row( $this->wpdb->prepare( "SELECT * FROM {$this->wpdb->users} WHERE user_login = %s AND user_pass = '' LIMIT 1", $username ) );
-        if ( ! empty( $user ) ) {
-            $usermeta = $this->wpdb->get_row( $this->wpdb->prepare( "SELECT * FROM {$this->wpdb->usermeta} WHERE meta_key = %s AND user_id = %d LIMIT 1", '_bbp_password', $user->ID ) );
-
-            if ( ! empty( $usermeta ) ) {
-                if ( $this->authenticate_pass( $password, $usermeta->meta_value ) ) {
-                    $this->wpdb->query( $this->wpdb->prepare( "UPDATE {$this->wpdb->users} SET user_pass = %s WHERE ID = %d", wp_hash_password( $password ), $user->ID ) );
-                    $this->wpdb->query( $this->wpdb->prepare( "DELETE FROM {$this->wpdb->usermeta} WHERE meta_key = %s AND user_id = %d", '_bbp_password', $user->ID ) );
+    // Look for the converter file in the converters directory
+    if ( false !== $curdir ) {
+        while ( $file = readdir( $curdir ) ) {
+            if ( stristr( $file, '.php' ) && stristr( $file, 'index' ) === false ) {
+                $name = preg_replace( '/.php/', '', $file );
+                if ( 'Example' !== $name ) {
+                    $files[ $name ] = $path . $file;
                 }
             }
@@ -1627 +39 @@
     }
 
-    /**
-     * A mini cache system to reduce database calls to forum ID's
-     *
-     * @param string $field
-     * @return string
-     */
-    private function callback_forumid( $field ) {
-        if ( ! isset( $this->map_forumid[ $field ] ) ) {
-            if ( ! empty( $this->sync_table ) ) {
-                $row = $this->wpdb->get_row( $this->wpdb->prepare( "SELECT value_id, meta_value FROM {$this->sync_table_name} WHERE meta_key = %s AND meta_value = %s LIMIT 1", '_bbp_old_forum_id', $field ) );
-            } else {
-                $row = $this->wpdb->get_row( $this->wpdb->prepare( "SELECT post_id AS value_id FROM {$this->wpdb->postmeta} WHERE meta_key = %s AND meta_value = %s LIMIT 1", '_bbp_old_forum_id', $field ) );
-            }
+    // Close the directory
+    closedir( $curdir );
 
-            if ( ! is_null( $row ) ) {
-                $this->map_forumid[ $field ] = $row->value_id;
-            } else {
-                $this->map_forumid[ $field ] = 0;
-            }
-        }
-        return $this->map_forumid[ $field ];
+    // Sort keys alphabetically, ignoring upper/lower casing
+    if ( ! empty( $files ) ) {
+        natcasesort( $files );
     }
 
-    /**
-     * A mini cache system to reduce database calls to topic ID's
-     *
-     * @param string $field
-     * @return string
-     */
-    private function callback_topicid( $field ) {
-        if ( ! isset( $this->map_topicid[ $field ] ) ) {
-            if ( ! empty( $this->sync_table ) ) {
-                $row = $this->wpdb->get_row( $this->wpdb->prepare( "SELECT value_id, meta_value FROM {$this->sync_table_name} WHERE meta_key = %s AND meta_value = %s LIMIT 1", '_bbp_old_topic_id', $field ) );
-            } else {
-                $row = $this->wpdb->get_row( $this->wpdb->prepare( "SELECT post_id AS value_id FROM {$this->wpdb->postmeta} WHERE meta_key = %s AND meta_value = %s LIMIT 1", '_bbp_old_topic_id', $field ) );
-            }
-
-            if ( ! is_null( $row ) ) {
-                $this->map_topicid[ $field ] = $row->value_id;
-            } else {
-                $this->map_topicid[ $field ] = 0;
-            }
-        }
-        return $this->map_topicid[ $field ];
-    }
-
-    /**
-     * A mini cache system to reduce database calls to reply_to post id.
-     *
-     * @since 2.4.0 bbPress (r5093)
-     *
-     * @param string $field
-     * @return string
-     */
-    private function callback_reply_to( $field ) {
-        if ( ! isset( $this->map_reply_to[ $field ] ) ) {
-            if ( ! empty( $this->sync_table ) ) {
-                $row = $this->wpdb->get_row( $this->wpdb->prepare( "SELECT value_id, meta_value FROM {$this->sync_table_name} WHERE meta_key = %s AND meta_value = %s LIMIT 1", '_bbp_old_reply_id', $field ) );
-            } else {
-                $row = $this->wpdb->get_row( $this->wpdb->prepare( "SELECT post_id AS value_id FROM {$this->wpdb->postmeta} WHERE meta_key = %s AND meta_value = %s LIMIT 1", '_bbp_old_reply_id', $field ) );
-            }
-
-            if ( ! is_null( $row ) ) {
-                $this->map_reply_to[ $field ] = $row->value_id;
-            } else {
-                $this->map_reply_to[ $field ] = 0;
-            }
-        }
-        return $this->map_reply_to[ $field ];
-    }
-
-    /**
-     * A mini cache system to reduce database calls to user ID's
-     *
-     * @param string $field
-     * @return string
-     */
-    private function callback_userid( $field ) {
-        if ( ! isset( $this->map_userid[ $field ] ) ) {
-            if ( ! empty( $this->sync_table ) ) {
-                $row = $this->wpdb->get_row( $this->wpdb->prepare( "SELECT value_id, meta_value FROM {$this->sync_table_name} WHERE meta_key = %s AND meta_value = %s LIMIT 1", '_bbp_old_user_id', $field ) );
-            } else {
-                $row = $this->wpdb->get_row( $this->wpdb->prepare( "SELECT user_id AS value_id FROM {$this->wpdb->usermeta} WHERE meta_key = %s AND meta_value = %s LIMIT 1", '_bbp_old_user_id', $field ) );
-            }
-
-            if ( ! is_null( $row ) ) {
-                $this->map_userid[ $field ] = $row->value_id;
-            } else {
-                if ( ! empty( $_POST['_bbp_converter_convert_users'] ) && ( (int) $_POST['_bbp_converter_convert_users'] === 1 ) ) {
-                    $this->map_userid[ $field ] = 0;
-                } else {
-                    $this->map_userid[ $field ] = $field;
-                }
-            }
-        }
-        return $this->map_userid[ $field ];
-    }
-
-    /**
-     * Check if the topic or reply author is anonymous
-     *
-     * @since 2.6.0 bbPress (r5544)
-     *
-     * @param  string $field
-     * @return string
-     */
-    private function callback_check_anonymous( $field ) {
-
-        if ( $this->callback_userid( $field ) == 0 ) {
-            $field = 'true';
-        } else {
-            $field = 'false';
-        }
-
-        return $field;
-    }
-
-    /**
-     * A mini cache system to reduce database calls map topics ID's to forum ID's
-     *
-     * @param string $field
-     * @return string
-     */
-    private function callback_topicid_to_forumid( $field ) {
-        $topicid = $this->callback_topicid( $field );
-        if ( empty( $topicid ) ) {
-            $this->map_topicid_to_forumid[ $topicid ] = 0;
-        } elseif ( ! isset( $this->map_topicid_to_forumid[ $topicid ] ) ) {
-            $row = $this->wpdb->get_row( $this->wpdb->prepare( "SELECT post_parent FROM {$this->wpdb->posts} WHERE ID = %d LIMIT 1", $topicid ) );
-
-            if ( ! is_null( $row ) ) {
-                $this->map_topicid_to_forumid[ $topicid ] = $row->post_parent;
-            } else {
-                $this->map_topicid_to_forumid[ $topicid ] = 0;
-            }
-        }
-
-        return $this->map_topicid_to_forumid[ $topicid ];
-    }
-
-    protected function callback_slug( $field ) {
-        return sanitize_title( $field );
-    }
-
-    protected function callback_negative( $field ) {
-        if ( $field < 0 ) {
-            return 0;
-        } else {
-            return $field;
-        }
-    }
-
-    protected function callback_html( $field ) {
-        require_once bbpress()->admin->admin_dir . 'parser.php';
-        $bbcode = BBCode::getInstance();
-        return html_entity_decode( $bbcode->Parse( $field ) );
-    }
-
-    protected function callback_null( $field ) {
-        if ( is_null( $field ) ) {
-            return '';
-        } else {
-            return $field;
-        }
-    }
-
-    protected function callback_datetime( $field ) {
-        if ( is_numeric( $field ) ) {
-            return date( 'Y-m-d H:i:s', $field );
-        } else {
-            return date( 'Y-m-d H:i:s', strtotime( $field ) );
-        }
-    }
+    // Filter & return
+    return (array) apply_filters( 'bbp_get_converters', $files );
 }
 
@@ -1807 +56 @@
  * of your choice.
  *
+ * @since 2.0.0
+ *
  * @param string $platform Name of valid platform class.
  */
 function bbp_new_converter( $platform ) {
-    $found = false;
 
-    if ( $curdir = opendir( bbpress()->admin->admin_dir . 'converters/' ) ) {
-        while ( $file = readdir( $curdir ) ) {
-            if ( stristr( $file, '.php' ) && stristr( $file, 'index' ) === FALSE ) {
-                $file = preg_replace( '/.php/', '', $file );
-                if ( $platform === $file ) {
-                    $found = true;
-                    continue;
-                }
-            }
-        }
-        closedir( $curdir );
+    // Default value
+    $converters = bbp_get_converters();
+
+    // Create a new converter object if it's found
+    if ( isset( $converters[ $platform ] ) ) {
+        require_once $converters[ $platform ];
+        return new $platform;
     }
 
-    if ( true === $found ) {
-        require_once bbpress()->admin->admin_dir . 'converters/' . $platform . '.php';
-        return new $platform;
-    } else {
-        return null;
-    }
+    // Return null if no converter was found
+    return null;
 }