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      1 /*
      2  * Copyright (C) 1999-2000 Harri Porten (porten (at) kde.org)
      3  * Copyright (C) 2006, 2007 Apple Inc. All rights reserved.
      4  * Copyright (C) 2009 Google Inc. All rights reserved.
      5  *
      6  * The Original Code is Mozilla Communicator client code, released
      7  * March 31, 1998.
      8  *
      9  * The Initial Developer of the Original Code is
     10  * Netscape Communications Corporation.
     11  * Portions created by the Initial Developer are Copyright (C) 1998
     12  * the Initial Developer. All Rights Reserved.
     13  *
     14  * This library is free software; you can redistribute it and/or
     15  * modify it under the terms of the GNU Lesser General Public
     16  * License as published by the Free Software Foundation; either
     17  * version 2.1 of the License, or (at your option) any later version.
     18  *
     19  * This library is distributed in the hope that it will be useful,
     20  * but WITHOUT ANY WARRANTY; without even the implied warranty of
     21  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     22  * Lesser General Public License for more details.
     23  *
     24  * You should have received a copy of the GNU Lesser General Public
     25  * License along with this library; if not, write to the Free Software
     26  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
     27  *
     28  * Alternatively, the contents of this file may be used under the terms
     29  * of either the Mozilla Public License Version 1.1, found at
     30  * http://www.mozilla.org/MPL/ (the "MPL") or the GNU General Public
     31  * License Version 2.0, found at http://www.fsf.org/copyleft/gpl.html
     32  * (the "GPL"), in which case the provisions of the MPL or the GPL are
     33  * applicable instead of those above.  If you wish to allow use of your
     34  * version of this file only under the terms of one of those two
     35  * licenses (the MPL or the GPL) and not to allow others to use your
     36  * version of this file under the LGPL, indicate your decision by
     37  * deletingthe provisions above and replace them with the notice and
     38  * other provisions required by the MPL or the GPL, as the case may be.
     39  * If you do not delete the provisions above, a recipient may use your
     40  * version of this file under any of the LGPL, the MPL or the GPL.
     41  */
     42 
     43 #include "config.h"
     44 #include "DateConversion.h"
     45 
     46 #include "CallFrame.h"
     47 #include "JSObject.h"
     48 #include "ScopeChain.h"
     49 #include "UString.h"
     50 #include <wtf/DateMath.h>
     51 #include <wtf/StringExtras.h>
     52 #include <wtf/text/CString.h>
     53 
     54 using namespace WTF;
     55 
     56 namespace JSC {
     57 
     58 double parseDate(ExecState* exec, const UString &date)
     59 {
     60     if (date == exec->globalData().cachedDateString)
     61         return exec->globalData().cachedDateStringValue;
     62     double value = parseES5DateFromNullTerminatedCharacters(date.utf8().data());
     63     if (isnan(value))
     64         value = parseDateFromNullTerminatedCharacters(exec, date.utf8().data());
     65     exec->globalData().cachedDateString = date;
     66     exec->globalData().cachedDateStringValue = value;
     67     return value;
     68 }
     69 
     70 void formatDate(const GregorianDateTime &t, DateConversionBuffer& buffer)
     71 {
     72     snprintf(buffer, DateConversionBufferSize, "%s %s %02d %04d",
     73         weekdayName[(t.weekDay + 6) % 7],
     74         monthName[t.month], t.monthDay, t.year + 1900);
     75 }
     76 
     77 void formatDateUTCVariant(const GregorianDateTime &t, DateConversionBuffer& buffer)
     78 {
     79     snprintf(buffer, DateConversionBufferSize, "%s, %02d %s %04d",
     80         weekdayName[(t.weekDay + 6) % 7],
     81         t.monthDay, monthName[t.month], t.year + 1900);
     82 }
     83 
     84 void formatTime(const GregorianDateTime &t, DateConversionBuffer& buffer)
     85 {
     86     int offset = abs(gmtoffset(t));
     87     char timeZoneName[70];
     88     struct tm gtm = t;
     89     strftime(timeZoneName, sizeof(timeZoneName), "%Z", &gtm);
     90 
     91     if (timeZoneName[0]) {
     92         snprintf(buffer, DateConversionBufferSize, "%02d:%02d:%02d GMT%c%02d%02d (%s)",
     93             t.hour, t.minute, t.second,
     94             gmtoffset(t) < 0 ? '-' : '+', offset / (60*60), (offset / 60) % 60, timeZoneName);
     95     } else {
     96         snprintf(buffer, DateConversionBufferSize, "%02d:%02d:%02d GMT%c%02d%02d",
     97             t.hour, t.minute, t.second,
     98             gmtoffset(t) < 0 ? '-' : '+', offset / (60*60), (offset / 60) % 60);
     99     }
    100 }
    101 
    102 void formatTimeUTC(const GregorianDateTime &t, DateConversionBuffer& buffer)
    103 {
    104     snprintf(buffer, DateConversionBufferSize, "%02d:%02d:%02d GMT", t.hour, t.minute, t.second);
    105 }
    106 
    107 } // namespace JSC
    108