unknow0 / logger

c logger library

logger

c logger library
it use the libcfg to get logger configuration.

Install

autoreconf -is
./configure
make
make install

Logger cfg key

logger.<name>.format	a format string used to render record (see below)
logger.<name>.level	the level of the logger (will only log record that have a superior level) {debug=0, info, warn, error, fatal, off}
logger.<name>.str_level	array of string representation of level (used by %L)
logger.<name>.out	reconize stdout, stderr and file:<path to logfile>

you can put . in name to order logger in cfg.

Reconized format in logger_t

these format are mostly compliant to strftime

%A	Day name
%a	Abrevied day name
%B	Month name
%b,%h	Abrevied month name
%C	Century number on 2 digit
%c	prefered datetime representation for this local
%D	like %m/%d/%y
%d	Day of month on 2 digit 0 padded
%e	like %d but space padded
%F	like %Y-%m-%d
%H	hour ussing 24-hour clock 0 padded
%k	like %H but space padded
%I	hour ussing 12-hour clock 0 padded
%l	like %I but space padded
%j	day in the year on 3 digit 0 padded
%M	Minute 0 padded
%m	Month number 0 padded
%P	pm/am
%p	PM/AM
%R	like %H:%M
%r	like %I:%M:%S %p
%S	second 0 padded
%s	seconds since Epoch
%T	like %H:%M:%S
%t	tab char
%U	week number, starting with the first Sunday
%u	day of week 1 to 7, 1=monday
%V	ISO 8601 week number
%G	ISO 8601 year (four digits)
%g	ISO 8601 year (two digits)
%v	like %e-%b-%Y
%W	like %U but starting with the first Monday
%w	day of week 0 to 6, 0=sunday
%X	prefered time representation for this local
%x	prefered date representation for this local
%Y	year on 4 digit
%y	year no 2 digit
%z	timezone offset [+-]hhmm
%+	like %a, %d %b %Y %H:%M:%S %z
%_	output as printf with fmt, arg passed to _l
%L	logger level as string (from logger_t.str_level or {DBG, INF, WRN, ERR, FTL})
%n	logger name
%%	% char