#!/bin/bash

INFILE=${2}
OUTFILE=${3}

usage() {
	printf "${0} - compiler for HELL programming language\n"
	printf "usage: ${0} INFILE GCCOPTS\n"
	printf "\n"
	printf "Note: Since hellc is a frontend for GCC, any GCC option can be used.\n"
	printf "\n"
	printf "Hellc is free software.\n"
	printf "See the GNU GPL version 3 for details.\n"
}

usage_small() {
	printf "usage: ${0} [-h] [-c] INFILE OUTFILE\n"
}

case ${1} in
	-h|--help)
		usage "$@"
		exit 0
	;;
	-c|--compile)
		if [[ -z "${INFILE}" ]]; then
			printf "${0}: no input file\n"
			exit 1
		fi

		printf "running HELL preprocessor for ${INFILE}\n"
		cat ${INFILE} | hellp > ${INFILE}.new
		if [ "$?" != 0 ]; then
			printf "${0}: error: HELL preprocessor failed to run\n"
			exit 1
		fi
		printf "${0}: hellp: ran successfully\n"

		printf "compiling ${INFILE}\n"
		gcc -x c ${INFILE}.new -o ${OUTFILE}
		if [ "$?" != 0 ]; then
			printf "${0}: error: C compiler failed to run\n"
			exit 1
		fi

		printf "cleaning up\n"
		rm -v ${INFILE}.new

		printf "finished compiling\n"
		exit 0
	;;
	-*|--*)
		usage_small "$@"
		exit 0
	;;
esac

usage_small "$@"
exit 1