Rotated log files limited to ten saved logs with timestamped and
counted file names. Logs written to writeable files directory. Formats
and file names hard coded with expression templates fro efficiency,
but with the ability to provide a user-defined configuration file that
overrides the hard-coded defaults. The configuration file must be in
the configuration files directory and named wsjtx_log_config.ini.
uses a settings file to define log sink back-ends, by default uses
:/wsjtx_log_config.ini from the resources file-system. Users may
override by placing their own wsjtx_log_config.ini into the WSJT-X
config location. The settings file format is as described in the Boost
log
documentation (https://www.boost.org/doc/libs/1_74_0/libs/log/doc/html/log/detailed/utilities.html#log.detailed.utilities.setup.settings_file)
with the additional feature that allows some pre-defined variables to
be expanded. The predefined variables refer to standard locations in
the file-system, and allow log files and rotation target directory
paths to be specified. The pre-defined variables are:
DesktopLocation
DocumentsLocation
TempLocation
HomeLocation
CacheLocation
GenericCacheLocation
GenericDataLocation
AppDataLocation
and must be used enclosed on braces and preceded by a '$'
character. E.g. to define the pattern for a sink's log file:
FileName="${AppLocalDataLocation}/wsjtx_syslog.log"
this would place the log file wsjtx_syslog.log in the WSJT-X log files
directory, on all platforms.
