#!/usr/bin/env sh
#
# SPDX-License-Identifier: GPL-2.0-only

# DESCR: Check for superfluous whitespace in the tree

LINTDIR="$(
  cd -- "$(dirname "$0")" > /dev/null 2>&1 || return
  pwd -P
)"
# shellcheck source=helper_functions.sh
. "${LINTDIR}/helper_functions.sh"

EXCLUDELIST='^src/vendorcode/|^util/kconfig/|^util/nvidia/cbootimage|^util/goswid|__pycache__|COPYING|LICENSE|README|_shipped$|\.patch$|\.bin$|\.hex$|\.jpg$|\.gif$|\.ttf$|\.woff$|\.png$|\.eot$|\.vbt$|\.ico$|\.md$|\.apcb$'
INCLUDELIST="src util payloads Makefile* toolchain.mk tests"

# shellcheck disable=SC2086,SC2046
if uname | grep -qi "linux"; then
	grep -n -H "[[:space:]][[:space:]]*$" \
		$(${FIND_FILES} ${INCLUDELIST} ${FINDOPTS} | \
			grep -Ev "($EXCLUDELIST)" ) | \
		sed -e "s,^.*$,File & has lines ending with whitespace.,"
else
	# The above form is much (100x) faster, but doesn't work
	# on all systems. A for loop also works but takes 30% longer
	${FIND_FILES} ${INCLUDELIST} ${FINDOPTS}| \
		grep -Ev "($EXCLUDELIST)" | \
		xargs -I % \
			grep -l "[[:space:]][[:space:]]*$" % | \
			sed -e "s,^.*$,File & has lines ending with whitespace.,"
fi