diff --git a/LICENSE b/COPYING
similarity index 100%
rename from LICENSE
rename to COPYING
diff --git a/config.h b/config.h
new file mode 100644
index 0000000..9bc2d9f
--- /dev/null
+++ b/config.h
@@ -0,0 +1,12 @@
+#ifndef LANGUAGE_CONFIG_H
+#define LANGUAGE_CONFIG_H
+
+
+// put your languages here comma separated
+// the first language is default language
+#define LANGUAGES "en"
+// language key in the configuration file
+#define LANGUAGE_KEY "LANGUAGE"
+
+
+#endif /* LANGUAGE_CONFIG_H */
diff --git a/language.cpp b/language.cpp
new file mode 100644
index 0000000..c42eb67
--- /dev/null
+++ b/language.cpp
@@ -0,0 +1,114 @@
+/***************************************************************************
+ *  Copyright (C) 2014  Evgeniy Alekseev                                      *
+ *                                                                         *
+ *  This library is free software; you can redistribute it and/or          *
+ *  modify it under the terms of the GNU Lesser General Public             *
+ *  License as published by the Free Software Foundation; either           *
+ *  version 3.0 of the License, or (at your option) any later version.     *
+ *                                                                         *
+ *  This library is distributed in the hope that it will be useful,        *
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of         *
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU       *
+ *  Lesser General Public License for more details.                        *
+ *                                                                         *
+ *  You should have received a copy of the GNU Lesser General Public       *
+ *  License along with this library.                                       *
+ ***************************************************************************/
+
+
+#include "language.h"
+
+#include <QFile>
+#include <QLocale>
+
+#include "config.h"
+
+
+Language::Language()
+{
+}
+
+
+QString Language::checkLanguage(const QString language)
+{
+    QStringList availableLanguages = getAvailableLanguages();
+    if (availableLanguages.count() == 0) return QString();
+    for (int i=0; i<availableLanguages.count(); i++)
+        if (language == availableLanguages[i])
+            return availableLanguages[i];
+    for (int i=0; i<availableLanguages.count(); i++)
+        if (language.contains(availableLanguages[i] + QChar('_')))
+            return availableLanguages[i];
+
+    return availableLanguages[0];
+}
+
+
+QString Language::defineLanguage(const QString configPath, const QString options)
+{
+    QMap<QString, QString> optionsDict = parseOptions(options);
+    if (optionsDict.contains(QString(LANGUAGE_KEY)))
+        if (getAvailableLanguages().contains(optionsDict[QString(LANGUAGE_KEY)]))
+            return optionsDict[QString(LANGUAGE_KEY)];
+
+    QString language;
+    language = defineLanguageFromFile(configPath);
+    if (language.isEmpty())
+        language = defineLanguageFromLocale();
+    language = checkLanguage(language);
+
+    return language;
+}
+
+
+QString Language::defineLanguageFromFile(const QString configPath)
+{
+    QMap<QString, QString> settings;
+    if (configPath.isEmpty())
+        return QString("");
+    QFile configFile(configPath);
+    QString fileStr;
+    if (!configFile.open(QIODevice::ReadOnly))
+        return QString("");
+    while (true) {
+        fileStr = QString(configFile.readLine()).trimmed();
+        if ((fileStr.isEmpty()) && (!configFile.atEnd())) continue;
+        if ((fileStr[0] == QChar('#')) && (!configFile.atEnd())) continue;
+        if ((fileStr[0] == QChar(';')) && (!configFile.atEnd())) continue;
+        if (fileStr.contains(QChar('=')))
+            settings[fileStr.split(QChar('='))[0]] = fileStr.split(QChar('='))[1];
+        if (configFile.atEnd()) break;
+    }
+    configFile.close();
+
+    if (settings.contains(QString(LANGUAGE_KEY)))
+        return settings[QString(LANGUAGE_KEY)];
+    else
+        return QString("");
+}
+
+
+QString Language::defineLanguageFromLocale()
+{
+    return QLocale::system().name();
+}
+
+
+QStringList Language::getAvailableLanguages()
+{
+    return QString(LANGUAGES).split(QChar(','));
+}
+
+
+QMap<QString, QString> Language::parseOptions(const QString options)
+{
+    QMap<QString, QString> optionsDict;
+    for (int i=0; i<options.split(QChar(',')).count(); i++) {
+        if (options.split(QChar(','))[i].split(QChar('=')).count() < 2)
+            continue;
+        optionsDict[options.split(QChar(','))[i].split(QChar('='))[0]] =
+                options.split(QChar(','))[i].split(QChar('='))[1];
+    }
+
+    return optionsDict;
+}
diff --git a/language.h b/language.h
new file mode 100644
index 0000000..bc906b2
--- /dev/null
+++ b/language.h
@@ -0,0 +1,42 @@
+/***************************************************************************
+ *  Copyright (C) 2014  Evgeniy Alekseev                                      *
+ *                                                                         *
+ *  This library is free software; you can redistribute it and/or          *
+ *  modify it under the terms of the GNU Lesser General Public             *
+ *  License as published by the Free Software Foundation; either           *
+ *  version 3.0 of the License, or (at your option) any later version.     *
+ *                                                                         *
+ *  This library is distributed in the hope that it will be useful,        *
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of         *
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU       *
+ *  Lesser General Public License for more details.                        *
+ *                                                                         *
+ *  You should have received a copy of the GNU Lesser General Public       *
+ *  License along with this library.                                       *
+ ***************************************************************************/
+
+#ifndef LANGUAGE_H
+#define LANGUAGE_H
+
+#include <QStringList>
+
+
+class Language : public QObject
+{
+    Q_OBJECT
+
+public:
+    explicit Language();
+    static QString checkLanguage(const QString language);
+    static QString defineLanguage(const QString configPath,
+                                  const QString options = QString("OPTIONS"));
+    static QString defineLanguageFromFile(const QString configPath);
+    static QString defineLanguageFromLocale();
+    static QStringList getAvailableLanguages();
+
+private:
+    static QMap<QString, QString> parseOptions(const QString options);
+};
+
+
+#endif /* LANGUAGE_H */