function qtranxf_update_config_header_css()
{
    global $q_config;
    $header_css = get_option('qtranslate_header_css');
    if ($header_css === false) {
        $q_config['header_css'] = qtranxf_front_header_css_default();
    }
    if (!$q_config['header_css_on'] || !empty($header_css)) {
        qtranxf_add_warning(sprintf(__('A manual update to option "%s" or to the theme custom CSS may be needed, after some languages are changed.', 'qtranslate'), __('Head inline CSS', 'qtranslate')) . ' ' . __('If you do not wish to customize this option, then reset it to the default by emptying its value.', 'qtranslate'));
    }
}
/**
 * return 'true', if no update needed,
 * or 'false', if update is impossible to do,
 * or 0, if all languages were updated successfully,
 * or positive integer number of errors occurred on languages update.
 */
function qtranxf_updateGettextDatabasesEx($force = false, $only_for_language = '')
{
    global $q_config;
    if ($only_for_language && !qtranxf_isEnabled($only_for_language)) {
        return false;
    }
    if (!is_dir(WP_LANG_DIR)) {
        if (!@mkdir(WP_LANG_DIR)) {
            return false;
        }
    }
    $next_update = get_option('qtranslate_next_update_mo');
    if (time() < $next_update && !$force) {
        return true;
    }
    update_option('qtranslate_next_update_mo', time() + 7 * 24 * 60 * 60);
    require_once ABSPATH . 'wp-admin/includes/translation-install.php';
    require_once ABSPATH . 'wp-admin/includes/class-wp-upgrader.php';
    require_once ABSPATH . 'wp-admin/includes/file.php';
    include ABSPATH . WPINC . '/version.php';
    // include an unmodified $wp_version
    $result = translations_api('core', array('version' => $wp_version));
    if (is_wp_error($result)) {
        qtranxf_add_warning(__('Gettext databases <strong>not</strong> updated:', 'qtranslate') . ' ' . $result->get_error_message());
        return false;
    }
    set_time_limit(300);
    $langs = empty($only_for_language) ? $q_config['enabled_languages'] : array($only_for_language);
    $errcnt = 0;
    foreach ($result['translations'] as $translation) {
        $locale = $translation['language'];
        $lang = null;
        foreach ($langs as $lng) {
            if ($q_config['locale'][$lng] != $locale) {
                continue;
            }
            $lang = $lng;
            break;
        }
        if (!$lang) {
            continue;
        }
        $translation = (object) $translation;
        $skin = new Automatic_Upgrader_Skin();
        $upgrader = new Language_Pack_Upgrader($skin);
        $translation->type = 'core';
        $result = $upgrader->upgrade($translation, array('clear_update_cache' => false));
        if (is_wp_error($result)) {
            qtranxf_add_warning(sprintf(__('Failed to update gettext database for "%s": %s', 'qtranslate'), $q_config['language_name'][$lang], $result->get_error_message()));
            ++$errcnt;
        }
    }
    return $errcnt;
}
/**
 * return 'true', if no update needed,
 * or 'false', if update is impossible to do,
 * or 0, if all languages were updated successfully,
 * or positive integer number of errors occurred on languages update.
 */
function qtranxf_updateGettextDatabasesEx($force = false, $only_for_language = '')
{
    if (empty($only_for_language)) {
        if (!$force) {
            $next_update = get_option('qtranslate_next_update_mo');
            if (time() < $next_update) {
                return true;
            }
        }
        update_option('qtranslate_next_update_mo', time() + 7 * 24 * 60 * 60);
    }
    if (!is_dir(WP_LANG_DIR)) {
        if (!@mkdir(WP_LANG_DIR)) {
            return false;
        }
    }
    require_once ABSPATH . 'wp-admin/includes/translation-install.php';
    require_once ABSPATH . 'wp-admin/includes/class-wp-upgrader.php';
    require_once ABSPATH . 'wp-admin/includes/file.php';
    //include( ABSPATH . WPINC . '/version.php' ); // include an unmodified $wp_version
    //$result = translations_api( 'core', array( 'version' => $wp_version ));
    //if ( is_wp_error( $result ) ){
    //	qtranxf_add_warning(__('Gettext databases <strong>not</strong> updated:', 'qtranslate') . ' ' . $result->get_error_message());
    //	return false;
    //}
    //$translations = $result['translations'];
    $translations = wp_get_available_translations();
    if (empty($translations)) {
        qtranxf_add_warning(__('Gettext databases <strong>not</strong> updated:', 'qtranslate') . ' ' . __('Failed to fetch the list of available translations.', 'qtranslate'));
        return false;
    }
    set_time_limit(300);
    if (empty($only_for_language)) {
        global $q_config;
        $langs = $q_config['enabled_languages'];
        $locales = $q_config['locale'];
    } else {
        $langs = array($only_for_language);
        $locales = qtranxf_language_configured('locale');
    }
    $errcnt = 0;
    /*
    	//qtranxf_dbg_log('qtranxf_updateGettextDatabasesEx: count($translations): ',count($translations));
    	//qtranxf_dbg_log('qtranxf_updateGettextDatabasesEx: $translations: ',$translations);
    	foreach ( $translations as $loc => $translation ) {
    		$locale = $translation['language'];
    		$lang = null;
    		foreach($langs as $lng) {
    			if(!isset($locales[$lng])){
    				$locales = qtranxf_language_configured('locale');
    				if(!isset($locales[$lng])) continue;
    			}
    			if($locales[$lng] != $locale) continue;
    			$lang = $lng;
    			break;
    		}
    		if(!$lang) continue;
    */
    foreach ($langs as $lang) {
        $loc = $locales[$lang];
        if (!isset($translations[$loc])) {
            continue;
        }
        $mo = WP_LANG_DIR . '/' . $loc . '.mo';
        $mo_ok = file_exists($mo);
        //qtranxf_dbg_log('qtranxf_updateGettextDatabasesEx: $mo_ok for '.$mo.': ',$mo_ok);
        if ($mo_ok) {
            continue;
        }
        //WP now takes care of translations updates on its own
        $translation = (object) $translations[$loc];
        $skin = new Automatic_Upgrader_Skin();
        $upgrader = new Language_Pack_Upgrader($skin);
        $translation->type = 'core';
        $result = $upgrader->upgrade($translation, array('clear_update_cache' => false));
        if (is_wp_error($result)) {
            qtranxf_add_warning(sprintf(__('Failed to update gettext database for "%s": %s', 'qtranslate'), $lang, $result->get_error_message()));
            ++$errcnt;
        }
    }
    return $errcnt;
}
function qtranxf_slug_update_translations_of($group, $group_name, $default_lang, &$wp_group)
{
    foreach ($_POST['qtranslate-slugs'][$group] as $name_old => &$qfields) {
        //$name_old = $qfields['qtranslate-original-value'];
        $name = sanitize_key($qfields[$default_lang]);
        //qtranxf_dbg_log('qtranxf_slug_update_translations_of: new: $wp_group['.$name.']: ', $wp_group[$name]);
        //qtranxf_dbg_log('qtranxf_slug_update_translations_of: old: $wp_group['.$name_old.']: ', $wp_group[$name_old]);
        if ($name != $name_old) {
            if (isset($wp_group[$name_old])) {
                qtranxf_add_warning(sprintf(__('The slug for %s "%s" for default language cannot be changed to "%s" on this page, because it is not known here which tool created it and for what purpose. Please, update this slug on the page where it is originated from. It may be required then to come back here to update the translations, unless the other plugin or theme is %sintegrated%s with %s.', 'qtranslate'), $group_name, $name_old, $name, '<a href="https://qtranslatexteam.wordpress.com/integration/" target="_blank">', '</a>', 'qTranslate&#8209;X'));
                $qfields[$default_lang] = $name = $name_old;
            } else {
                $slugs_old = qtranxf_slug_get_translations($name_old);
                //qtranxf_dbg_log('qtranxf_slug_update_translations_of: $slugs_old: ', $slugs_old);
                if (!empty($slugs_old)) {
                    qtranxf_slug_del_translations($name_old);
                }
            }
        }
        if (isset($wp_group[$name])) {
            qtranxf_slug_update_translations($name, $qfields, $default_lang);
        } else {
            qtranxf_add_error(sprintf(__('Translations cannot be updated for unknown %s "%s".', 'qtranslate'), $group_name, $name));
        }
    }
    qtranxf_slug_clean_request($group);
}