##! Interface for the ascii log writer.

module LogAscii;

export {
	## If true, output everything to stdout rather than
	## into files. This is primarily for debugging purposes.
	const output_to_stdout = F &redef;

	## If true, include a header line with column names.
	const include_header = T &redef;

	## Prefix for the header line if included.
	const header_prefix = "# " &redef;

	## Separator between fields.
	const separator = "\t" &redef;

	## Separator between set elements.
	const set_separator = "," &redef;

	## String to use for empty fields.
	const empty_field = "-" &redef;

	## String to use for an unset &optional field.
	const unset_field = "-" &redef;
}

# Default function to postprocess a rotated ASCII log file. It moves the rotated
# file to a new name that includes a timestamp with the opening time, and then
# runs the writer's default postprocessor command on it.
function default_rotation_postprocessor_func(info: Log::RotationInfo) : bool
	{
	# Move file to name including both opening and closing time.
	local dst = fmt("%s.%s.log", info$path,
			strftime(Log::default_rotation_date_format, info$open));

	system(fmt("/bin/mv %s %s", info$fname, dst));

	# Run default postprocessor.
	return Log::run_rotation_postprocessor_cmd(info, dst);
	}

redef Log::default_rotation_postprocessors += { [Log::WRITER_ASCII] = default_rotation_postprocessor_func };