mirror of
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157 lines
5.4 KiB
C
157 lines
5.4 KiB
C
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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*
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* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code, released
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* Jan 28, 2003.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 2003
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Garrett Arch Blythe, 28-January-2003
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#if !defined(__time_conversions_h)
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#define __time_conversions_h
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#define TIME_BEGIN_MACRO do {
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#define TIME_END_MACRO } while(0);
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/*
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* FILETIME has an epoch of 1601.
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* Precomputed the 1970 epoch so we do not have to below.
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*/
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#define FILETIME_1970 116444736000000000i64
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/*
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* Marco to support add/sub/mul/div on a FILETIME level.
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*/
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#define FILETIME_ARITH(outFileTime, inFileTime, inOperation, inValue) \
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TIME_BEGIN_MACRO \
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ULARGE_INTEGER buffer1; \
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\
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buffer1.LowPart = inFileTime.dwLowDateTime; \
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buffer1.HighPart = inFileTime.dwHighDateTime; \
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buffer1.QuadPart = buffer1.QuadPart inOperation inValue; \
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outFileTime.dwLowDateTime = buffer1.LowPart; \
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outFileTime.dwHighDateTime = buffer1.HighPart; \
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TIME_END_MACRO
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/*
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* FILETIME is in 100 nanosecond units.
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* Provide macros for conversion to other second units.
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*/
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#define FILETIME_2_MICROSECONDS(outTime, inFileTime) \
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TIME_BEGIN_MACRO \
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ULARGE_INTEGER buffer2; \
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\
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buffer2.LowPart = inFileTime.dwLowDateTime; \
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buffer2.HighPart = inFileTime.dwHighDateTime; \
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outTime = buffer2.QuadPart / 10i64; \
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TIME_END_MACRO
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#define FILETIME_2_MILLISECONDS(outTime, inFileTime) \
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TIME_BEGIN_MACRO \
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ULARGE_INTEGER buffer3; \
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\
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buffer3.LowPart = inFileTime.dwLowDateTime; \
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buffer3.HighPart = inFileTime.dwHighDateTime; \
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outTime = buffer3.QuadPart / 10000i64; \
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TIME_END_MACRO
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#define FILETIME_2_SECONDS(outTime, inFileTime) \
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TIME_BEGIN_MACRO \
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ULARGE_INTEGER buffer4; \
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\
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buffer4.LowPart = inFileTime.dwLowDateTime; \
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buffer4.HighPart = inFileTime.dwHighDateTime; \
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outTime = buffer4.QuadPart / 10000000i64; \
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TIME_END_MACRO
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#define SECONDS_2_FILETIME(outFileTime, inTime) \
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TIME_BEGIN_MACRO \
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ULARGE_INTEGER buffer5; \
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\
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buffer5.QuadPart = (ULONGLONG)inTime * 10000000i64; \
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outFileTime.dwLowDateTime = buffer5.LowPart; \
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outFileTime.dwHighDateTime = buffer5.HighPart; \
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TIME_END_MACRO
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/*
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* Conversions from FILETIME 1601 epoch time to LIBC 1970 time.epoch.
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*/
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#define FILETIME_2_time_t(outTimeT, inFileTime) \
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TIME_BEGIN_MACRO \
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FILETIME result6; \
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ULONGLONG conversion6; \
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\
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FILETIME_ARITH(result6, inFileTime, -, FILETIME_1970); \
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FILETIME_2_SECONDS(conversion6, result6); \
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outTimeT = (time_t)conversion6; \
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TIME_END_MACRO
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#define time_t_2_FILETIME(outFileTime, inTimeT) \
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TIME_BEGIN_MACRO \
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FILETIME conversion7; \
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\
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SECONDS_2_FILETIME(conversion7, inTimeT); \
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FILETIME_ARITH(outFileTime, conversion7, +, FILETIME_1970); \
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TIME_END_MACRO
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/*
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* Sometimes SYSTEMTIME needs to be handled as well.
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*/
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#define SYSTEMTIME_2_time_t(outTimeT, inSystemTime) \
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TIME_BEGIN_MACRO \
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FILETIME result8; \
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\
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SystemTimeToFileTime(&inSystemTime, &result8); \
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FILETIME_2_time_t(outTimeT, result8); \
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TIME_END_MACRO
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#define time_t_2_SYSTEMTIME(outSystemTime, inTimeT) \
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TIME_BEGIN_MACRO \
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FILETIME conversion9; \
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\
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time_t_2_FILETIME(conversion9, inTimeT); \
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FileTimeToSystemTime(&conversion9, &outSystemTime); \
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TIME_END_MACRO
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#define time_t_2_LOCALSYSTEMTIME(outSystemTime, inTimeT) \
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TIME_BEGIN_MACRO \
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FILETIME conversion10; \
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FILETIME localConversion10; \
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\
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time_t_2_FILETIME(conversion10, inTimeT); \
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FileTimeToLocalFileTime(&conversion10, &localConversion10); \
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FileTimeToSystemTime(&localConversion10, &outSystemTime); \
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TIME_END_MACRO
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#endif /* __time_conversions_h */
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