#!/bin/sh

unset core_modules core_confload
core_modules=
core_confload="${NGX_CORE_CONFLOAD:-}"

## filter out builtin core modules
unset i
for i in ${NGX_CORE_MODULES:-} ; do
	[ -n "$i" ] || continue

	case "$i" in
	*/* | *\** | *\?* )
		log_always "module '$i' is not legal, skipping"
		continue
	;;
	esac

	if is_builtin_module core "$i" ; then
		log "$i is builtin module, moving to NGX_CORE_CONFLOAD"
		core_confload="${core_confload} $i"
		continue
	fi

	## naive deduplication
	case " ${core_modules} " in
	*" $i "* )
		log "$i is already specified"
		continue
	;;
	esac

	core_modules="${core_modules}${core_modules:+ }$i"
done
unset i

set -a
NGX_CORE_MODULES="${core_modules}"
NGX_CORE_CONFLOAD=$(sort_dedup_list "${core_confload}")
NGX_CORE_EVENTS_CONFLOAD=$(sort_dedup_list "${NGX_CORE_EVENTS_CONFLOAD}")
set +a

unset core_modules core_confload