/*

 * Copyright (C) 2007 Apple Inc.  All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 * 1. Redistributions of source code must retain the above copyright

 *    notice, this list of conditions and the following disclaimer.

 * 2. Redistributions in binary form must reproduce the above copyright

 *    notice, this list of conditions and the following disclaimer in the

 *    documentation and/or other materials provided with the distribution.

 *

 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY

 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR

 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,

 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,

 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR

 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY

 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 

 */

#include "config.h"

#include "Language.h"

#include "CString.h"

#include "PlatformString.h"

namespace WebCore {

static String localeInfo(LCTYPE localeType, const String& fallback)

{

    LANGID langID = GetUserDefaultUILanguage();

    int localeChars = GetLocaleInfo(langID, localeType, 0, 0);

    if (!localeChars)

        return fallback;

    Vector<WCHAR> localeNameBuf(localeChars);

    localeChars = GetLocaleInfo(langID, localeType, localeNameBuf.data(), localeChars);

    if (!localeChars)

        return fallback;

    String localeName = String::adopt(localeNameBuf);

    if (localeName.isEmpty())

        return fallback;

    return localeName;

}

String defaultLanguage()

{

    static String computedDefaultLanguage;

    if (!computedDefaultLanguage.isEmpty())

        return computedDefaultLanguage;

    String languageName = localeInfo(LOCALE_SISO639LANGNAME, "en");

    String countryName = localeInfo(LOCALE_SISO3166CTRYNAME, String());

    if (countryName.isEmpty())

        computedDefaultLanguage = languageName;

    else

        computedDefaultLanguage = String::format("%s-%s", languageName.latin1().data(), countryName.latin1().data());

    return computedDefaultLanguage;

}

}