Add support for environment variables resolution in log file names #570
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This is a
I have
CHANGELOG.md
README.md
The syntax is cmake-like:
E.g., suppose we have ELPP_VAR as environment variable, then configuration file can look like this:
Global:
FORMAT = "%msg"
FILENAME = "matcher_${ELPP_VAR}.log"
ENABLED = true
TO_FILE = true
TO_STANDARD_OUTPUT = true
SUBSECOND_PRECISION = 6
PERFORMANCE_TRACKING = true
MAX_LOG_FILE_SIZE = 2097152 ## 2MB - Comment starts with two hashes (##)
LOG_FLUSH_THRESHOLD = 100 ## Flush after every 100 logs
In case ELPP_VAR is not set, it will be substituted with an empty string.