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#!/bin/sh
toupper () {
printf '%s\n' "$1" | sed 's/^-//' | tr '[:lower:]' '[:upper:]'
}
[ -z "$1" ] && printf 'Usage: %s input_file cpp_args\n' "$0" && exit 1
# shellcheck disable=SC2034
input_file="$1"
shift
: "${CPP:="cpp"}"
: "${CPPFLAGS:="-I."}"
while [ "$1" ]; do
case "$1" in
-*)
selarg="$selarg -D$(toupper "$1")"
;;
*)
selarg="$selarg -DWSPKG_$(toupper "$1")"
;;
esac
shift
done
eval "${CPP} ${CPPFLAGS} $selarg "'"$input_file"' | \
sed -e '/^#/d' -e '/^ *$/d' | tr ' ' '\n' | sed '/^ *$/d'
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