author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Wed, 13 Oct 2010 16:27:53 +0300 | |
branch | RCL_3 |
changeset 75 | 254b651f304e |
parent 0 | e4d67989cc36 |
permissions | -rw-r--r-- |
0
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// Copyright (c) 1998-2009 Nokia Corporation and/or its subsidiary(-ies). |
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// All rights reserved. |
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// This component and the accompanying materials are made available |
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// under the terms of "Eclipse Public License v1.0" |
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// which accompanies this distribution, and is available |
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// at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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// |
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// Initial Contributors: |
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// Nokia Corporation - initial contribution. |
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// |
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// Contributors: |
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// |
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// Description: |
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// Mapping between EPOC32 time and libc time |
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// The basic philosophy is to work in time_t units (TInt) which |
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// will be essentially TTimeIntervalSeconds from the start of Unix time. |
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// To stay compliant with the C-Standard (with reference to C99 draft), we |
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// set the meaning of time_t to be Universal time. |
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// |
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// |
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|
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#include <e32std.h> |
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#include <ltime.h> |
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#include "reent.h" // for _ASCTIME_SIZE |
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#include <sys/time.h> // for gettimeofday |
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#include <time.h> |
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#include <string.h> // for strcpy |
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#define UNIX_BASE TTime(MAKE_TINT64(0x00dcddb3,0x0f2f8000)) // 00:00, Jan 1st 1970 |
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// Utility routines for converting between representations |
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#ifdef __SYMBIAN_COMPILE_UNUSED__ |
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static struct tm& as_struct_tm (const time_t& t, struct tm& res) |
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{ |
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TTime us = UNIX_BASE + TTimeIntervalSeconds(t); |
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TDateTime dt = us.DateTime(); |
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res.tm_sec = dt.Second(); |
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res.tm_min = dt.Minute(); |
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res.tm_hour = dt.Hour(); |
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res.tm_mday = dt.Day() + 1; |
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res.tm_mon = dt.Month(); |
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res.tm_year = dt.Year() - 1900; |
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// EPOC32 counts the year day as Jan 1st == day 1 |
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res.tm_yday = us.DayNoInYear() - 1; |
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// EPOC32 counts the weekdays from 0==Monday to 6==Sunday |
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res.tm_wday = us.DayNoInWeek() + 1; |
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if (res.tm_wday==7) |
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res.tm_wday=0; // Sunday==0 in a struct tm |
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// newlib just sets this field to -1 |
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// tm_isdst doesn't really make sense here since we don't |
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// know the locale for which to interpret this time. |
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res.tm_isdst = -1; |
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return res; |
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} |
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static void as_ttime (const struct tm& p, TTime& res, TBool normalise=EFalse) |
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{ |
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TDateTime dt; |
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TInt err = dt.Set(p.tm_year+1900, (enum TMonth)p.tm_mon, p.tm_mday-1, |
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p.tm_hour, p.tm_min, p.tm_sec, 0); |
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if (err == KErrNone) |
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{ |
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res = dt; |
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return; |
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} |
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if (!normalise) |
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{ |
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res = TInt64(-1); |
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return; |
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} |
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// Try to normalise things (for mktime) |
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dt.Set(p.tm_year+1900, EJanuary, 0, 0, 0, 0, 0); |
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res = dt; |
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res += TTimeIntervalMonths (p.tm_mon); |
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res += TTimeIntervalDays (p.tm_mday-1); |
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res += TTimeIntervalHours (p.tm_hour); |
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res += TTimeIntervalMinutes(p.tm_min); |
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res += TTimeIntervalSeconds(p.tm_sec); |
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} |
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|
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inline void as_ttime (const time_t& p, TTime& res) |
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{ |
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res = UNIX_BASE + TTimeIntervalSeconds(p); |
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} |
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#endif //__SYMBIAN_COMPILE_UNUSED__ |
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GLDEF_C time_t as_time_t(const TTime& t) |
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{ |
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TTimeIntervalSeconds res; |
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TInt err = t.SecondsFrom(UNIX_BASE, res); |
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if (err) |
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return -1; |
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else |
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return res.Int(); |
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} |
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105 |
|
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#ifdef __SYMBIAN_COMPILE_UNUSED__ |
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// Utility routine for formatting a TTime into a descriptor using the |
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// UNIX ctime format. NB. EPOC32 abbreviations can be up to KMaxDayNameAbb |
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// and KMaxMonthNameAbb characters (both == 4). The %F is needed to |
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// force the meanings of %D, %Y etc. |
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111 |
|
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static TDes8& as_string (TTime& t, TDes8& res) |
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{ |
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// UNICODE problem - t.Format operates on TDes => TDes16 |
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115 |
|
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#if !defined(_UNICODE) |
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TRAPD(err, t.FormatL(res, _L("%F%*E %*N %D %H:%T:%S %Y"))); |
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#else |
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TBuf<_ASCTIME_SIZE> unires; |
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TRAPD(err, t.FormatL(unires, _L("%F%*E %*N %D %H:%T:%S %Y"))); |
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if (!err) |
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res.Copy(unires); |
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#endif |
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if (err) |
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res = _L8("Error\n"); |
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else |
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res.Append('\n'); |
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return res; |
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} |
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#endif |
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131 |
|
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#ifdef __SYMBIAN_COMPILE_UNUSED__ |
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/* |
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Intended Usage: Utility routine for converting from UTC to localtime. |
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*/ |
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inline time_t toLocal (const time_t aUniversalTime) |
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{ |
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#ifndef __SERIES60_MRT_1_0 |
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TTimeIntervalSeconds offset = User::UTCOffset(); |
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return aUniversalTime + offset.Int(); |
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#else |
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TLocale locale; |
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return aUniversalTime + locale.UniversalTimeOffset().Int(); |
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#endif //__SERIES60_MRT_1_0 |
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} |
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146 |
|
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/* |
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Intended Usage: Utility routine for converting from localtime to UTC. |
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However, having decided that time_t is always Universal time, toGMT is empty. |
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*/ |
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inline time_t toGMT (const time_t aLocalTime) |
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{ |
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return aLocalTime; |
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} |
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#endif //__SYMBIAN_COMPILE_UNUSED__ |
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156 |
|
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// external interface for the C library |
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|
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extern "C" { |
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/* |
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Intended Usage: Get current UTC time. |
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Get the number of seconds elapsed since 00:00 hours, |
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Jan 1, 1970 UTC from the system clock. |
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*/ |
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EXPORT_C time_t time (time_t* p) |
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{ |
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TTime t; |
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t.UniversalTime(); |
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169 |
|
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time_t res = as_time_t(t); |
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if (p) |
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*p = res; |
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return res; |
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} |
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175 |
|
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176 |
|
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/* |
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Return number of clock ticks since process start. |
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Returns the number of clock ticks elapsed. |
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A macro constant called CLK_TCK defines the relation betwen |
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clock tick and second (clock ticks per second). |
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*/ |
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183 |
|
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EXPORT_C clock_t clock () |
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{ |
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int retval=-1; |
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RThread proc; |
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TTimeIntervalMicroSeconds iMicSecsFromEpoc; |
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TInt err=proc.GetCpuTime(iMicSecsFromEpoc); |
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190 |
|
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if(err) |
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192 |
{ |
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return retval; |
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} |
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return I64INT(iMicSecsFromEpoc.Int64()); |
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} |
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}// extern "C" |
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|
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199 |