/*

 * Copyright (C) 1999-2000 Harri Porten (porten@kde.org)

 * Copyright (C) 2006, 2007 Apple Inc. All rights reserved.

 * Copyright (C) 2009 Google Inc. All rights reserved.

 *

 * The Original Code is Mozilla Communicator client code, released

 * March 31, 1998.

 *

 * The Initial Developer of the Original Code is

 * Netscape Communications Corporation.

 * Portions created by the Initial Developer are Copyright (C) 1998

 * the Initial Developer. All Rights Reserved.

 *

 * 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 2.1 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; if not, write to the Free Software

 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA

 *

 * Alternatively, the contents of this file may be used under the terms

 * of either the Mozilla Public License Version 1.1, found at

 * http://www.mozilla.org/MPL/ (the "MPL") or the GNU General Public

 * License Version 2.0, found at http://www.fsf.org/copyleft/gpl.html

 * (the "GPL"), in which case the provisions of the MPL or the GPL are

 * applicable instead of those above.  If you wish to allow use of your

 * version of this file only under the terms of one of those two

 * licenses (the MPL or the GPL) and not to allow others to use your

 * version of this file under the LGPL, indicate your decision by

 * deletingthe provisions above and replace them with the notice and

 * other provisions required by the MPL or the GPL, as the case may be.

 * If you do not delete the provisions above, a recipient may use your

 * version of this file under any of the LGPL, the MPL or the GPL.

 */

#include "config.h"

#include "DateConversion.h"

#include "CallFrame.h"

#include "UString.h"

#include <wtf/DateMath.h>

#include <wtf/StringExtras.h>

using namespace WTF;

namespace JSC {

double parseDate(ExecState* exec, const UString &date)

{

    if (date == exec->globalData().cachedDateString)

        return exec->globalData().cachedDateStringValue;

    double value = parseDateFromNullTerminatedCharacters(exec, date.UTF8String().data());

    exec->globalData().cachedDateString = date;

    exec->globalData().cachedDateStringValue = value;

    return value;

}

void formatDate(const GregorianDateTime &t, DateConversionBuffer& buffer)

{

    snprintf(buffer, DateConversionBufferSize, "%s %s %02d %04d",

        weekdayName[(t.weekDay + 6) % 7],

        monthName[t.month], t.monthDay, t.year + 1900);

}

void formatDateUTCVariant(const GregorianDateTime &t, DateConversionBuffer& buffer)

{

    snprintf(buffer, DateConversionBufferSize, "%s, %02d %s %04d",

        weekdayName[(t.weekDay + 6) % 7],

        t.monthDay, monthName[t.month], t.year + 1900);

}

void formatTime(const GregorianDateTime &t, DateConversionBuffer& buffer)

{

    int offset = abs(gmtoffset(t));

    char timeZoneName[70];

    struct tm gtm = t;

    strftime(timeZoneName, sizeof(timeZoneName), "%Z", &gtm);

    if (timeZoneName[0]) {

        snprintf(buffer, DateConversionBufferSize, "%02d:%02d:%02d GMT%c%02d%02d (%s)",

            t.hour, t.minute, t.second,

            gmtoffset(t) < 0 ? '-' : '+', offset / (60*60), (offset / 60) % 60, timeZoneName);

    } else {

        snprintf(buffer, DateConversionBufferSize, "%02d:%02d:%02d GMT%c%02d%02d",

            t.hour, t.minute, t.second,

            gmtoffset(t) < 0 ? '-' : '+', offset / (60*60), (offset / 60) % 60);

    }

}

void formatTimeUTC(const GregorianDateTime &t, DateConversionBuffer& buffer)

{

    snprintf(buffer, DateConversionBufferSize, "%02d:%02d:%02d GMT", t.hour, t.minute, t.second);

}

} // namespace JSC