# Copyright 2016-2017,2019 Jan Chren (rindeal)
# Distributed under the terms of the GNU General Public License v2

# @ECLASS: ninja-utils-patched.eclass

case "${EAPI:-0}" in
'6' | '7' ) ;;
* ) die "EAPI='${EAPI}' is not supported by '${ECLASS}' eclass" ;;
esac

inherit rindeal


inherit ninja-utils


## functions: eshopts_push, eshopts_pop
inherit estack


## PR: https://github.com/gentoo/gentoo/pull/1481
_ninjaopts_from_makeopts() {
	local -- makeopts="${1:-"${MAKEOPTS}"}"
	local -- jobs= keep= load=

	set -- ${makeopts}
	while (( ${#} ))
	do
		case "${1}" in
		-j | --jobs )
			if [[ -n "${2}" && "${2}" =~ ^[0-9]+$ ]]
			then
				jobs="${2}"
				shift
			else
				# `man 1 make`:
				# 	If the -j option is given without an argument, make will not limit
				# 	the number of jobs that can run simultaneously.
				jobs="999"
			fi
			;;
		-k | --keep-going )
			# `man 1 make`:
			# 	Continue as much as possible after an error
			# `ninja --help`:
			# 	keep going until N jobs fail
			# ninja internals:
			# 	ninja handles 0 as inifinity in this case
			keep="0"
			;;
		-l | --load-average )
			if [[ -n "${2}" && "${2}" =~ ^[0-9]+\.?[0-9]*$ ]]
			then
				# ninja internals:
				# 	ninja supports floating-point numbers here
				load="${2}"
				shift
			else
				# `man 1 make`:
				# 	With no argument, removes a previous load limit.
				load=
			fi
			;;
		-S | --no-keep-going | --stop )
			# `make --help`:
			# 	Turns off -k
			keep=
			;;
		-j* | --jobs=* | -l* | --load-average=* )
			eshopts_push -s extglob

			local arg="${1##*([^0-9])}"
			case "${1##*(-)}" in
			j*) jobs="${arg}" ;;
			l*) load="${arg}" ;;
			esac

			eshopts_pop
			;;
		esac
		shift
	done

	local -a ninjaopts=( )

	ninjaopts+=( ${jobs:+"-j"} ${jobs} )
	ninjaopts+=( ${keep:+"-k"} ${keep} )
	ninjaopts+=( ${load:+"-l"} ${load} )

	debug-print "${FUNCNAME[1]}: '${makeopts}' -> '${ninjaopts[*]}'"

	NINJAOPTS="${ninjaopts[*]}"
}

# @FUNCTION: eninja
# @USAGE: [<args>...]
# @DESCRIPTION:
#   Call Ninja, passing the NINJAOPTS (or converted MAKEOPTS), followed
#   by the supplied arguments. This function dies if ninja fails.
eninja() {
	[[ -z ${NINJAOPTS+set} ]] && _ninjaopts_from_makeopts

	set -- ninja -v ${NINJAOPTS} "$@"
	echo "$@" >&2
	"$@" || die -n "${*} failed"
}