function asb_slideshow_build_template($args)
{
    extract($args);
    global ${$template_var}, $mybb, $templates;
    $shuffle = $settings['shuffle'] ? 'true' : 'false';
    $folder = $settings['folder'];
    $rate = (int) $settings['rate'] ? (int) $settings['rate'] : 10;
    $fade_rate = (double) $settings['fade_rate'] ? (double) $settings['fade_rate'] : 1;
    $filenames = asb_get_folder_images($folder, '', $settings['recursive']);
    if (!$filenames) {
        ${$template_var} = <<<EOF
\t\t<tr>
\t\t\t<td class="trow1">{$lang->asb_slideshow_no_images}</td>
\t\t</tr>
EOF;
        return false;
    }
    if ($settings['footer_text'] && $settings['footer_url']) {
        eval("\$footer = \"" . $templates->get('asb_slideshow_footer') . "\";");
    }
    $width = $width * 0.9;
    eval("\$\$template_var = \"" . $templates->get('asb_slideshow') . "\";");
    return true;
}
/**
 * asb_get_folder_images()
 *
 * build a list of all the images stored in a particular folder on the server
 *
 * @param - $folder - (string) the unqualified folder name from the root
 * @param - $subfolder - (string) (for recursion) the current subfolder
 * @param - $recursive - (bool) determines where to recurse into subfolders
 * @return: (string) a comma-separated, single-quoted list of file names
 */
function asb_get_folder_images($folder, $subfolder = '', $recursive = false)
{
    // bad folder, get out
    if (!$folder || !is_dir(MYBB_ROOT . $folder)) {
        return false;
    }
    // make sure the subfolder has a directory separator
    if ($subfolder && substr($subfolder, strlen($subfolder) - 1, 1) != '/') {
        $subfolder .= '/';
    }
    // cycle through all the files/folders and produce a list
    $sep = '';
    foreach (new DirectoryIterator(MYBB_ROOT . $folder) as $file) {
        // skip navigation folders
        if ($file->isDot()) {
            continue;
        }
        if ($file->isDir()) {
            // no recursion, just skip this
            if (!$recursive) {
                continue;
            }
            // get the files from this directory
            $sub_files = asb_get_folder_images($folder . '/' . $file->getFilename(), $subfolder . $file->getFilename(), $recursive);
            if ($sub_files) {
                $filenames .= "{$sep}{$sub_files}";
                $sep = ',';
            }
            continue;
        }
        // only certain extensions allowed
        $extension = pathinfo($file->getFilename(), PATHINFO_EXTENSION);
        if (!in_array($extension, array('gif', 'png', 'jpg', 'jpeg'))) {
            continue;
        }
        $filenames .= "{$sep}'{$subfolder}{$file->getFilename()}'";
        $sep = ',';
    }
    return $filenames;
}