genkernel use-modules load.sh proof of concept from consus

-

#!/bin/bash

load() {
	# TODO: validate the path to avoid escapes
	. ./$2
	# FIX: This loop could be replaced w/ set+awk 
	for modules_group in ${!MODULES_*}; do
		echo ${1}_${modules_group}=\"${!modules_group}\"
	done
}

# TODO: merge this with the loop that starts right afterwards, inputs structured.
eval "$(load DEFAULT modules_load.default)"
eval "$(load ARCH    modules_load.arch)"
eval "$(load CONFIG  modules_load.config)"

for pfx in DEFAULT ARCH CONFIG; do
	for modules_group in $(eval echo \${!${pfx}_MODULES_*}); do
		eval ${modules_group#${pfx}}+=\(\${${modules_group}[@]}\)
	done
done

for modules_group in ${!_MODULES_*}; do
	declare -A result

	for module in $(eval echo \${$modules_group[@]}); do
		if [[ ${module} == -* ]]; then
			unset result[${module#-}]
		else
			result[${module}]=1
		fi
	done

	if [[ ${#result[@]} -gt 0 ]]; then
		eval ${modules_group#_}=$(echo \${!result[@]})
	fi

	unset ${modules_group}
done

for modules_group in ${!MODULES_*}; do
	echo ${modules_group} contains ${!modules_group}
done

load.sh

#!/bin/bash

load() {
	. ./$2
	for modules_group in ${!MODULES_*}; do
		echo ${1}_${modules_group}=\"${!modules_group}\"
	done
}

eval "$(load DEFAULT modules_load.default)"
eval "$(load ARCH    modules_load.arch)"
eval "$(load CONFIG  modules_load.config)"

for pfx in DEFAULT ARCH CONFIG; do
	for modules_group in $(eval echo \${!${pfx}_MODULES_*}); do
		eval ${modules_group#${pfx}}+=\(\${${modules_group}[@]}\)
	done
done

for modules_group in ${!_MODULES_*}; do
	declare -A result

	for module in $(eval echo \${$modules_group[@]}); do
		if [[ ${module} == -* ]]; then
			unset result[${module#-}]
		else
			result[${module}]=1
		fi
	done

	if [[ ${#result[@]} -gt 0 ]]; then
		eval ${modules_group#_}=$(echo \${!result[@]})
	fi

	unset ${modules_group}
done

for modules_group in ${!MODULES_*}; do
	echo ${modules_group} contains ${!modules_group}
done

modules_load.arch

MODULES_FOO='-b a'
MODULES_BAR='-*'

modules_load.config

MODULES_FOO='c'

modules_load.default

MODULES_FOO='z -z b'
MODULES_BAR='x'