I18n.java 文件源码

private static Configuration loadLanguageFile(final String locale) throws Exception{
    final File langDir = getLanguagesDir();
    File file = new File(langDir, locale + ".yml");

    // check file available
    if (file == null || !file.isFile() || !file.canRead()){
        ActionLog.getInstance().warning("Unknown language file: " + locale);
        return null;
    }

    YamlConfiguration conf =  YamlConfiguration.loadConfiguration(file);

    // check all messages available
    if (fallbackMessages != null && conf.getKeys(true).size() != fallbackMessages.getKeys(true).size()){
        // collect missing message keys
        for (String key : fallbackMessages.getKeys(true)){
            if (!conf.contains(key) && !fallbackMessages.isConfigurationSection(key)){
                conf.set(key, fallbackMessages.get(key));
                ActionLog.getInstance().warning("Missing message key on " + locale + ".yml: " + key);
            }
        }
    }
    return conf;
}