S3_Uploads::filter_upload_dir PHP Method

    public function filter_upload_dir($dirs)
    {
        $this->original_upload_dir = $dirs;
        $dirs['path'] = str_replace(WP_CONTENT_DIR, 's3://' . $this->bucket, $dirs['path']);
        $dirs['basedir'] = str_replace(WP_CONTENT_DIR, 's3://' . $this->bucket, $dirs['basedir']);
        if (!defined('S3_UPLOADS_DISABLE_REPLACE_UPLOAD_URL') || !S3_UPLOADS_DISABLE_REPLACE_UPLOAD_URL) {
            if (defined('S3_UPLOADS_USE_LOCAL') && S3_UPLOADS_USE_LOCAL) {
                $dirs['url'] = str_replace('s3://' . $this->bucket, $dirs['baseurl'] . '/s3/' . $this->bucket, $dirs['path']);
                $dirs['baseurl'] = str_replace('s3://' . $this->bucket, $dirs['baseurl'] . '/s3/' . $this->bucket, $dirs['basedir']);
            } else {
                $dirs['url'] = str_replace('s3://' . $this->bucket, $this->get_s3_url(), $dirs['path']);
                $dirs['baseurl'] = str_replace('s3://' . $this->bucket, $this->get_s3_url(), $dirs['basedir']);
            }
        }
        return $dirs;
    }