Re: [Cppcms-users] booster::locale::date_time to timestamp conversion issues / basis for booster::l

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Hi Artyom,

Thank you for the promt answer. For building CppCMS I used the 
description on http://cppcms.com/wikipp/en/page/cppcms_1x_build. I did 
not make any special configurations regarding the ICU.
The CppCMS version is the same (Revision: 2329).

Is it possible, that the Ubuntu version (and with that difference ICU 
versions) can influence the results?

The "working" maschine is Ubuntu 14.04.3 LTS with the following ICU 
Version:
  <icuSystemParams type="icu4c">
     <param name="copyright"> Copyright (C) 2013, International Business 
Machines Corporation and others. All Rights Reserved. </param>
     <param name="product">icu4c</param>
     <param name="product.full">International Components for Unicode for 
C/C++</param>
     <param name="version">52.1</param>
     <param name="version.unicode">6.3</param>
     <param name="platform.number">4000</param>
     <param name="platform.type">Linux</param>
     <param name="locale.default">de_DE</param>
     <param name="locale.default.bcp47">de-DE</param>
     <param name="converter.default">UTF-8</param>
     <param name="icudata.name">icudt52l</param>
     <param name="icudata.path"></param>
     <param name="cldr.version">24.0</param>
     <param name="tz.version">2013g</param>
     <param name="tz.default">Europe/Berlin</param>
     <param name="cpu.bits">64</param>
     <param name="cpu.big_endian">0</param>
     <param name="os.wchar_width">4</param>
     <param name="os.charset_family">0</param>
     <param name="os.host">x86_64-pc-linux-gnu</param>
     <param name="build.build">x86_64-pc-linux-gnu</param>
     <param name="build.cc">gcc</param>
     <param name="build.cxx">g++</param>
     <param name="uconfig.internal_digitlist">1</param>
     <param name="uconfig.have_parseallinput">1</param>
     <param name="uconfig.format_fastpaths_49">1</param>
  </icuSystemParams>

ICU Initialization returned: U_ZERO_ERROR

The "not working" machine is Ubuntu 13.10 with the following ICU infos:

<ICUINFO>
International Components for Unicode for C/C++
  Copyright (C) 2011, International Business Machines Corporation and 
others. All Rights Reserved.
Compiled-Version: 4.8.1.1
Runtime-Version: 4.8.1.1
Compiled-Unicode-Version: 6.0
Runtime-Unicode-Version: 6.0
Platform: U_LINUX
Build: x86_64-pc-linux-gnu
C compiler: gcc
C++ compiler: g++
ICUDATA: icudt48l
Data Directory:
ICU Initialization returned: U_ZERO_ERROR
Default locale: de_DE
CLDR-Version: 2.0.1
Default converter: UTF-8
Default TZ: Europe/Berlin
TZ data version: 2011k
Plugin file is: /usr/lib/x86_64-linux-gnu/icu/icuplugins48.txt
</ICUINFO>

I did no further calculations on the date_time objects. The following 
source code is the whole date_time example I was trying out. The 
complete test project is a little bit larger.. But I could try to create 
a small test program and check the behaviour.

// get some time some month ago..
booster::locale::date_time dtCurrentTime;
booster::locale::date_time dtSomeMonthAgo = dtCurrentTime - 
(booster::locale::period::month());

// get date_time for 1970-01-01 00:00:00
booster::locale::date_time dtStart(0);

// get timestamp
int iDifference = dtStart.difference(dtCurrent, 
booster::locale::period::second());

BOOSTER_DEBUG("test") << "Timestamp of dtSomeMonthAgo: " << iDifference;

Thank you very much for your help,

Alex

Am 26.11.2015 um 15:37 schrieb Artyom Beilis:
> Is CppCMS compiled with ICU on both machines?
> Is it same CppCMS version?
> Also can you print all intermediate calculations as well? (i.e. 
> dtCurrentTime,dtSomeMonthAgo and dtStart)
> In general second difference should be trivial i.e. mostly calculate 
> difference between internal timestamp.
>
> Artyom
>
>     ------------------------------------------------------------------------
>     *From:* Alexander Mack <a....@ev...>
>     *To:* cpp...@li...
>     *Sent:* Thursday, November 26, 2015 3:30 PM
>     *Subject:* [Cppcms-users] booster::locale::date_time to timestamp
>     conversion issues / basis for booster::locale::date_time
>
>     Hello,
>
>     I'm trying to convert a date_time object into a simple timestamp e.g.:
>
>     // init environment...
>     std::locale::global(booster::locale::generator().generate(""));
>     cppcms::service srv(argc, argv);
>
>     // ....
>
>     // get some time some month ago..
>     booster::locale::date_time dtCurrentTime;
>     booster::locale::date_time dtSomeMonthAgo = dtCurrentTime -
>     (booster::locale::period::month());
>
>     // get date_time for 1970-01-01 00:00:00
>     booster::locale::date_time dtStart(0);
>
>     // get timestamp
>     int iDifference = dtStart.difference(dtCurrent,
>     booster::locale::period::second());
>
>     That code works fine on Machine A.. But when I'm running the
>     program on
>     Machine B I get weird results..
>     On Machine A the timestamp for Mon, 26 Oct 2015 12:37:12 GMT is
>     1445863032. (correct)
>     On Machine B the timestamp for Mon, 26 Oct 2015 12:37:12 GMT is
>     536870912. (wrong)
>
>     The times on the machines are equal too.. timedatectl:
>
>     Machine A:
>     Local time: Do 2015-11-26 14:25:12 CET
>       Universal time: Do 2015-11-26 13:25:12 UTC
>             Timezone: Europe/Berlin (CET, +0100)
>           NTP enabled: yes
>     NTP synchronized: yes
>       RTC in local TZ: no
>           DST active: no
>       Last DST change: DST ended at
>                       So 2015-10-25 02:59:59 CEST
>                       So 2015-10-25 02:00:00 CET
>       Next DST change: DST begins (the clock jumps one hour forward) at
>                       So 2016-03-27 01:59:59 CET
>                       So 2016-03-27 03:00:00 CEST
>
>     Machine B:
>     Local time: Do 2015-11-26 14:25:38 CET
>       Universal time: Do 2015-11-26 13:25:38 UTC
>             RTC time: Do 2015-11-26 13:25:38
>             Timezone: Europe/Berlin (CET, +0100)
>           NTP enabled: yes
>     NTP synchronized: no
>       RTC in local TZ: no
>           DST active: no
>       Last DST change: DST ended at
>                       So 2015-10-25 02:59:59 CEST
>                       So 2015-10-25 02:00:00 CET
>       Next DST change: DST begins (the clock jumps one hour forward) at
>                       So 2016-03-27 01:59:59 CET
>                       So 2016-03-27 03:00:00 CEST
>
>
>     Maybe someone had the same issue and knows what the problem is?
>
>     I would appreciate any tip :-)
>
>     Thank you very much,
>
>     Alex
>
>
>
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> Design, debug & build mobile apps & 2D/3D high-impact games for multiple OSs.
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Re: [Cppcms-users] booster::locale::date_time to timestamp conversion issues / basis for booster::l

Re: [Cppcms-users] booster::locale::date_time to timestamp conversion issues / basis for booster::locale::date_time