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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()
{
local script=
local arg=
local var=
local val=
if [ ${#} -lt 1 ]; then
usage >&2
exit 1
fi
script=''
for arg in "${@}"; do
case "${arg}" in
*=*)
IFS='=' read var val <<-EOF
${arg}
EOF
val="$(printf '%s' "${val}" | sed 's|/|\\/|g')"
script="${script}s/\$${var}/${val}/g;"
shift 1
;;
*)
break
esac
done
if [ ${#} -ne 1 ]; then
usage >&2
exit 1
fi
cd "$(dirname "${1}")"
parse "${1}" "${script}"
}
usage()
{
printf 'Usage: %s [<var>=<val> ...] <kconfig-file>\n' "${0}"
}
parse()
{
local file="${1}"
local script="${2}"
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}" "${script}"
else
printf '%s\n' "${line}"
fi
done <<-EOF
$(sed "${script}" <"${file}")
EOF
}
main "${@}"
|
