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#!/bin/sh
#
# Kconfig preprocessor
#
# Copyright (C) 2014 Patrick "P. J." McDermott
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
set -u
main()
{
if [ ${#} -ne 1 ]; then
usage >&2
exit 1
fi
parse "${1}"
}
usage()
{
printf 'Usage: %s <kconfig-file>\n' "${0}"
}
parse()
{
local file="${1}"
local line=
while IFS='' read line; do
if [ "x${line}" != "x${line#source}" ]; then
line="$(printf '%s' "${line}" | \
sed 's/^source[ \t][ \t]*"*\([^"]*\).*$/\1/')"
parse "${line}"
else
printf '%s\n' "${line}"
fi
done <"${file}"
}
main "${@}"
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