pkgs/development/perl-modules/expression-generator/lib-cache.sh


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# First argument: command to run
# Second argument: cache name
# Third argument: argument to command
# Fourth argument: cache type
cached_output () {
	cmd="$1";
	basename="$2";
	arg="$3";
	ext="$4";
	
	if ! [ -e "cache-${ext//./-}/${basename}.${ext}" ]; then
		mkdir -p "cache-${ext//./-}";
		$cmd $arg > "cache-${ext//./-}/${basename}.${ext}";
	fi;

	cat "cache-${ext//./-}/${basename}.${ext}";
}