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4a6bfc086c
Switched to POCO library for unified platform/library interface. Deprecated the external module API. It was creating more problems than solving. Removed most built-in libraries in favor of system libraries for easier maintenance. Cleaned and secured code with help from static analyzers.
139 lines
4.1 KiB
C
139 lines
4.1 KiB
C
/*
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* $Id: wce_timesys.c,v 1.2 2006/04/09 16:48:18 mloskot Exp $
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*
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* Defines function to convert time between formats SYSTEMTIME,
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* FILETIME and time_t value.
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*
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* Created by Mateusz Loskot (mateusz@loskot.net)
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*
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* Copyright (c) 2006 Taxus SI Ltd.
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom
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* the Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH
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* THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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* MIT License:
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* http://opensource.org/licenses/mit-license.php
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*
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* Contact:
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* Taxus SI Ltd.
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* http://www.taxussi.com.pl
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*
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*/
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#include <wce_time.h>
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#include <wce_timesys.h>
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#include <windows.h>
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/*******************************************************************************
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* wceex_filetime_to_time - Convert FILETIME to time as time_t value
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*
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* Description:
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*
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*
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* Return:
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*
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* This function shall return the specified time since the Epoch
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* encoded as a value of type time_t.
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*
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*******************************************************************************/
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time_t wceex_filetime_to_time(const FILETIME * pft)
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{
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SYSTEMTIME st;
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FILETIME lft;
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/* File time as 0 value cannot be represented as Epoch time. */
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if (!pft->dwLowDateTime && !pft->dwHighDateTime)
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{
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return (time_t)-1;
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}
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/* Convert to a broken down local time value */
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if (!FileTimeToLocalFileTime(pft, &lft) ||
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!FileTimeToSystemTime(&lft, &st))
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{
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return (time_t)-1;
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}
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return wceex_local_to_time(&st);
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}
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/*******************************************************************************
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* wceex_local_to_time - Convert broken-down local time to value of type time_t
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*
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* Description:
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*
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*
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* Return:
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*
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* This function shall return the specified time since the Epoch
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* encoded as a value of type time_t.
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*
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*******************************************************************************/
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time_t wceex_local_to_time(const SYSTEMTIME *st)
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{
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if (st == NULL)
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{
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return (time_t)-1;
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}
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return wceex_local_to_time_r(st->wYear - TM_YEAR_BASE,
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st->wMonth - 1,
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st->wDay, st->wHour,
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st->wMinute,
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st->wSecond);
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}
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/*******************************************************************************
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* wceex_local_to_time - Convert broken-down local time to value of type time_t
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*
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* Description:
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*
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* Date and time are given as a set of separate values.
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* Parameters:
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* - year is Epoch-based, year - 1900
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* - mon is 0 based number of current month
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* - day is 1 based number of current day
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* - hour, min and sec represent current local time.
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*
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* Return:
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*
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* This function shall return the specified time since the Epoch
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* encoded as a value of type time_t.
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*
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*******************************************************************************/
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time_t wceex_local_to_time_r(int year, int mon, int day, int hour, int min, int sec)
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{
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struct tm tmbuff = { 0 };
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tmbuff.tm_year = year;
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tmbuff.tm_mon = mon;
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tmbuff.tm_mday = day;
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tmbuff.tm_hour = hour;
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tmbuff.tm_min = min;
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tmbuff.tm_sec = sec;
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tmbuff.tm_isdst = 0;
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tmbuff.tm_wday = 0;
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tmbuff.tm_yday = 0;
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/* Convert tm struct to time_tUTC */
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return wceex_mktime(&tmbuff);
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}
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