How to add timezone info for log entries and log filename about log HOT 3 CLOSED

You can't, because Boost.DateTime currently does not provide a way to obtain the current timezone from the system. I'm actually not sure there is a more or less standard way to do this.

If you have a timezone through some external means, you could create an attribute that generates boost::local_time::local_date_time with the time zone, and then use its locale facet to format the date and time with the timezone. You can use the basic_clock attribute with your own traits (see here for examples of clock traits).

There is no workaround for file names. This was already reported in #210.

from log.

#define LOG(severity) \
    now = time(NULL); \
    strftime(tz, sizeof(tz), "%z", localtime(&now)); \
    BOOST_LOG_TRIVIAL(severity) << " " << tz << " " << __FILE__ << ":" << __LINE__ << ": "

I tried adding the timezone in the LOG macro which was written by you in 2016. But it outputs the timezone after severity +0800. It also calls extra functions time() and strftime(). I don't think you'll like it.

2023-Jul-02 20:52:01.079777 [info   ]  +0800 main.cpp:45: info msg!
2023-Jul-02 20:52:01.080239 [warning]  +0800 main.cpp:46: warning msg!
2023-Jul-02 20:52:01.098602 [error  ]  +0800 main.cpp:47: error msg!

from log.

I didn't mean to modify the logging macro, I meant to add your own attribute for timestamps instead of attrs::local_clock, which would contain time zone information, and then format it.

from log.