fgerlits commented on a change in pull request #867:
URL: https://github.com/apache/nifi-minifi-cpp/pull/867#discussion_r476465535
##########
File path: extensions/windows-event-log/ConsumeWindowsEventLog.cpp
##########
@@ -610,6 +612,36 @@ bool ConsumeWindowsEventLog::createEventRender(EVT_HANDLE
hEvent, EventRender& e
return true;
}
+void ConsumeWindowsEventLog::refreshTimeZoneData() {
+ DYNAMIC_TIME_ZONE_INFORMATION tzinfo;
+ auto ret = GetDynamicTimeZoneInformation(&tzinfo);
+ std::wstring tzstr;
+ long tzbias = 0;
+ bool dst = false;
+ switch (ret) {
+ case TIME_ZONE_ID_UNKNOWN:
+ logger_->log_error("Failed to get timezone information!");
+ return; // Don't update members in case we cannot get data
+ case TIME_ZONE_ID_DAYLIGHT:
+ tzstr = tzinfo.DaylightName;
+ dst = true;
+ // [[fallthrough]];
+ case TIME_ZONE_ID_STANDARD:
+ tzstr = tzstr.empty() ? tzinfo.StandardName : tzstr; // Use standard
timezome name in case there is no daylight name or in case it's not DST
+ tzbias = tzinfo.Bias + (dst ? tzinfo.DaylightBias : tzinfo.StandardBias);
+ break;
+ }
+
+ tzbias *= -1; // WinApi specifies UTC = localtime + bias, but we need
offset from UTC
+ std::stringstream tzoffset;
+ tzoffset << ((tzbias > 0) ? "+" : "") << (tzbias / 60) << ":" <<
std::setfill('0') << std::setw(2) << (std::abs(tzbias % 60));
Review comment:
this prints UTC as "0:00" (which is OK, but "+00:00" is more standard)
and UTC-0:30 as "0:30" (which is wrong -- this time zone doesn't really exist,
but still)
```suggestion
tzoffset << (tzbias >= 0 ? '+' : '-') << std::setfill('0') << std::setw(2)
<< std::abs(tzbias) / 60
<< ":" << std::setfill('0') << std::setw(2) << std::abs(tzbias) % 60;
```
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