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 * Copyright (C) 2010 Research In Motion Limited. All rights reserved. 6 * 7 * Version: MPL 1.1/GPL 2.0/LGPL 2.1 8 * 9 * The contents of this file are subject to the Mozilla Public License Version 10 * 1.1 (the "License"); you may not use this file except in compliance with 11 * the License. You may obtain a copy of the License at 12 * http://www.mozilla.org/MPL/ 13 * 14 * Software distributed under the License is distributed on an "AS IS" basis, 15 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License 16 * for the specific language governing rights and limitations under the 17 * License. 18 * 19 * The Original Code is Mozilla Communicator client code, released 20 * March 31, 1998. 21 * 22 * The Initial Developer of the Original Code is 23 * Netscape Communications Corporation. 24 * Portions created by the Initial Developer are Copyright (C) 1998 25 * the Initial Developer. All Rights Reserved. 26 * 27 * Contributor(s): 28 * 29 * Alternatively, the contents of this file may be used under the terms of 30 * either of the GNU General Public License Version 2 or later (the "GPL"), 31 * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), 32 * in which case the provisions of the GPL or the LGPL are applicable instead 33 * of those above. If you wish to allow use of your version of this file only 34 * under the terms of either the GPL or the LGPL, and not to allow others to 35 * use your version of this file under the terms of the MPL, indicate your 36 * decision by deleting the provisions above and replace them with the notice 37 * and other provisions required by the GPL or the LGPL. If you do not delete 38 * the provisions above, a recipient may use your version of this file under 39 * the terms of any one of the MPL, the GPL or the LGPL. 40 * 41 */ 42 43 #ifndef DateMath_h 44 #define DateMath_h 45 46 #include <stdint.h> 47 #include <string.h> 48 #include "wtf/text/WTFString.h" 49 #include "wtf/WTFExport.h" 50 51 namespace WTF { 52 53 WTF_EXPORT void initializeDates(); 54 55 // Not really math related, but this is currently the only shared place to put these. 56 WTF_EXPORT double parseDateFromNullTerminatedCharacters(const char* dateString); 57 // dayOfWeek: [0, 6] 0 being Monday, day: [1, 31], month: [0, 11], year: ex: 2011, hours: [0, 23], minutes: [0, 59], seconds: [0, 59], utcOffset: [-720,720]. 58 WTF_EXPORT String makeRFC2822DateString(unsigned dayOfWeek, unsigned day, unsigned month, unsigned year, unsigned hours, unsigned minutes, unsigned seconds, int utcOffset); 59 60 const char weekdayName[7][4] = { "Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun" }; 61 const char monthName[12][4] = { "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" }; 62 const char* const monthFullName[12] = { "January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December" }; 63 64 const double minutesPerHour = 60.0; 65 const double secondsPerMinute = 60.0; 66 const double msPerSecond = 1000.0; 67 const double msPerMinute = 60.0 * 1000.0; 68 const double msPerHour = 60.0 * 60.0 * 1000.0; 69 const double msPerDay = 24.0 * 60.0 * 60.0 * 1000.0; 70 71 WTF_EXPORT bool isLeapYear(int year); 72 73 // Returns the number of days from 1970-01-01 to the specified date. 74 WTF_EXPORT double dateToDaysFrom1970(int year, int month, int day); 75 WTF_EXPORT int msToYear(double ms); 76 WTF_EXPORT int dayInYear(int year, int month, int day); 77 WTF_EXPORT int dayInYear(double ms, int year); 78 WTF_EXPORT int monthFromDayInYear(int dayInYear, bool leapYear); 79 WTF_EXPORT int dayInMonthFromDayInYear(int dayInYear, bool leapYear); 80 81 // Returns milliseconds with UTC and DST. 82 WTF_EXPORT double convertToLocalTime(double ms); 83 84 } // namespace WTF 85 86 using WTF::isLeapYear; 87 using WTF::dateToDaysFrom1970; 88 using WTF::dayInMonthFromDayInYear; 89 using WTF::dayInYear; 90 using WTF::minutesPerHour; 91 using WTF::monthFromDayInYear; 92 using WTF::msPerDay; 93 using WTF::msPerHour; 94 using WTF::msPerMinute; 95 using WTF::msPerSecond; 96 using WTF::msToYear; 97 using WTF::secondsPerMinute; 98 using WTF::parseDateFromNullTerminatedCharacters; 99 using WTF::makeRFC2822DateString; 100 using WTF::convertToLocalTime; 101 102 #endif // DateMath_h 103
