mila

#!/bin/bash
DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"

# saner programming env: these switches turn some bugs into errors
set -o errexit -o pipefail -o noclobber -o nounset

# -allow a command to fail with !’s side effect on errexit
# -use return value from ${PIPESTATUS[0]}, because ! hosed $?
! getopt --test > /dev/null 
if [[ ${PIPESTATUS[0]} -ne 4 ]]; then
    echo 'I’m sorry, `getopt --test` failed in this environment.'
    exit 1
fi

OPTIONS=dfo:v
LONGOPTS=debug,force,output:,verbose

# -regarding ! and PIPESTATUS see above
# -temporarily store output to be able to check for errors
# -activate quoting/enhanced mode (e.g. by writing out “--options”)
# -pass arguments only via   -- "$@"   to separate them correctly
! PARSED=$(getopt --options=$OPTIONS --longoptions=$LONGOPTS --name "$0" -- "$@")
if [[ ${PIPESTATUS[0]} -ne 0 ]]; then
    # e.g. return value is 1
    #  then getopt has complained about wrong arguments to stdout
    exit 2
fi
# read getopt’s output this way to handle the quoting right:
eval set -- "$PARSED"

d=n f=n v=n outFile=a.out
# now enjoy the options in order and nicely split until we see --
while true; do
    case "$1" in
        -d|--debug)
            d=y
            shift
            ;;
        -f|--force)
            f=y
            shift
            ;;
        -v|--verbose)
            v=y
            shift
            ;;
        -o|--output)
            outFile="$2"
            shift 2
            ;;
        --)
            shift
            break
            ;;
        *)
            echo "Programming error"
            exit 3
            ;;
    esac
done

# handle non-option arguments
if [[ $# -ne 1 ]]; then
    echo "$0: A single input file is required."
    exit 4
fi

#echo "verbose: $v, force: $f, debug: $d, in: $1, out: $outFile"

InputFileName=$(realpath "$1");
OutputFileName=$(realpath "$outFile");
OutputFileBaseName="${OutputFileName%%.*}"

rm -f "$OutputFileBaseName.ir"
#echo "DEBUG" "$OutputFileBaseName.ir" "$InputFileName" "${DIR}/build/mila"
cat "$InputFileName" | cargo run > "$OutputFileBaseName.ir"
rm -f "$OutputFileBaseName.s"
llc "$OutputFileBaseName.ir" -o "$OutputFileBaseName.s" -relocation-model=pic &&
clang "$OutputFileBaseName.s" "${DIR}/src/lib.c" -o "$OutputFileName"