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Diffstat (limited to 'src/3rdparty/webkit/JavaScriptCore/wtf/DateMath.h')
| -rw-r--r-- | src/3rdparty/webkit/JavaScriptCore/wtf/DateMath.h | 187 |
1 files changed, 187 insertions, 0 deletions
diff --git a/src/3rdparty/webkit/JavaScriptCore/wtf/DateMath.h b/src/3rdparty/webkit/JavaScriptCore/wtf/DateMath.h new file mode 100644 index 0000000..8690a49 --- /dev/null +++ b/src/3rdparty/webkit/JavaScriptCore/wtf/DateMath.h @@ -0,0 +1,187 @@ +/* + * 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. + * + * Version: MPL 1.1/GPL 2.0/LGPL 2.1 + * + * The contents of this file are subject to the Mozilla Public License Version + * 1.1 (the "License"); you may not use this file except in compliance with + * the License. You may obtain a copy of the License at + * http://www.mozilla.org/MPL/ + * + * Software distributed under the License is distributed on an "AS IS" basis, + * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License + * for the specific language governing rights and limitations under the + * License. + * + * 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. + * + * Contributor(s): + * + * Alternatively, the contents of this file may be used under the terms of + * either of the GNU General Public License Version 2 or later (the "GPL"), + * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), + * in which case the provisions of the GPL or the LGPL are applicable instead + * of those above. If you wish to allow use of your version of this file only + * under the terms of either the GPL or the LGPL, and not to allow others to + * use your version of this file under the terms of the MPL, indicate your + * decision by deleting the provisions above and replace them with the notice + * and other provisions required by the GPL or the LGPL. If you do not delete + * the provisions above, a recipient may use your version of this file under + * the terms of any one of the MPL, the GPL or the LGPL. + * + */ + +#ifndef DateMath_h +#define DateMath_h + +#include <time.h> +#include <string.h> +#include <wtf/Noncopyable.h> + +namespace WTF { + +struct GregorianDateTime; + +void initializeDates(); +void msToGregorianDateTime(double, bool outputIsUTC, GregorianDateTime&); +double gregorianDateTimeToMS(const GregorianDateTime&, double, bool inputIsUTC); +double getUTCOffset(); +int equivalentYearForDST(int year); +double getCurrentUTCTime(); +double getCurrentUTCTimeWithMicroseconds(); +void getLocalTime(const time_t*, tm*); + +// Not really math related, but this is currently the only shared place to put these. +double parseDateFromNullTerminatedCharacters(const char*); +double timeClip(double); + +const char * const weekdayName[7] = { "Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun" }; +const char * const monthName[12] = { "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" }; + +const double hoursPerDay = 24.0; +const double minutesPerHour = 60.0; +const double secondsPerHour = 60.0 * 60.0; +const double secondsPerMinute = 60.0; +const double msPerSecond = 1000.0; +const double msPerMinute = 60.0 * 1000.0; +const double msPerHour = 60.0 * 60.0 * 1000.0; +const double msPerDay = 24.0 * 60.0 * 60.0 * 1000.0; + +// Intentionally overridding the default tm of the system +// Tee members of tm differ on various operating systems. +struct GregorianDateTime : Noncopyable { + GregorianDateTime() + : second(0) + , minute(0) + , hour(0) + , weekDay(0) + , monthDay(0) + , yearDay(0) + , month(0) + , year(0) + , isDST(0) + , utcOffset(0) + , timeZone(0) + { + } + + ~GregorianDateTime() + { + delete [] timeZone; + } + + GregorianDateTime(const tm& inTm) + : second(inTm.tm_sec) + , minute(inTm.tm_min) + , hour(inTm.tm_hour) + , weekDay(inTm.tm_wday) + , monthDay(inTm.tm_mday) + , yearDay(inTm.tm_yday) + , month(inTm.tm_mon) + , year(inTm.tm_year) + , isDST(inTm.tm_isdst) + { +#if !PLATFORM(WIN_OS) && !PLATFORM(SOLARIS) && !COMPILER(RVCT) + utcOffset = static_cast<int>(inTm.tm_gmtoff); + + int inZoneSize = strlen(inTm.tm_zone) + 1; + timeZone = new char[inZoneSize]; + strncpy(timeZone, inTm.tm_zone, inZoneSize); +#else + utcOffset = static_cast<int>(getUTCOffset() / msPerSecond + (isDST ? secondsPerHour : 0)); + timeZone = 0; +#endif + } + + operator tm() const + { + tm ret; + memset(&ret, 0, sizeof(ret)); + + ret.tm_sec = second; + ret.tm_min = minute; + ret.tm_hour = hour; + ret.tm_wday = weekDay; + ret.tm_mday = monthDay; + ret.tm_yday = yearDay; + ret.tm_mon = month; + ret.tm_year = year; + ret.tm_isdst = isDST; + +#if !PLATFORM(WIN_OS) && !PLATFORM(SOLARIS) && !COMPILER(RVCT) + ret.tm_gmtoff = static_cast<long>(utcOffset); + ret.tm_zone = timeZone; +#endif + + return ret; + } + + void copyFrom(const GregorianDateTime& rhs) + { + second = rhs.second; + minute = rhs.minute; + hour = rhs.hour; + weekDay = rhs.weekDay; + monthDay = rhs.monthDay; + yearDay = rhs.yearDay; + month = rhs.month; + year = rhs.year; + isDST = rhs.isDST; + utcOffset = rhs.utcOffset; + if (rhs.timeZone) { + int inZoneSize = strlen(rhs.timeZone) + 1; + timeZone = new char[inZoneSize]; + strncpy(timeZone, rhs.timeZone, inZoneSize); + } else + timeZone = 0; + } + + int second; + int minute; + int hour; + int weekDay; + int monthDay; + int yearDay; + int month; + int year; + int isDST; + int utcOffset; + char* timeZone; +}; + +static inline int gmtoffset(const GregorianDateTime& t) +{ + return t.utcOffset; +} + +} // namespace WTF + +#endif // DateMath_h |