run

#!/usr/bin/env sh
# vim: ft=sh ts=4 sw=4 sts=4 et :

build() {
    case "$1" in
    *.c) gcc "$1" -o "$2" ;;
    *.cpp) g++ "$1" -o "$2" ;;
    *)
        echo >&2 "run: error: unsupported file type"
        exit 1
        ;;
    esac
}

run_executable() {
    "$1"
}

main() {
    src=$(command -v realpath >/dev/null 2>&1 && realpath "$1" || readlink -f "$1")
    executable=$(echo "$src" | sed -E 's/\.(c|cpp)$/.run/')
    if [ "$src" = "$executable" ]; then
        echo >&2 "run: error: file name cannot be the same as the run file name"
        exit 1
    fi

    if [ ! -f "$src" ]; then
        echo >&2 "run: error: source file does not exist"
        exit 1
    fi

    build "$src" "$executable"
    if [ ! -f "$executable" ]; then
        echo >&2 "run: error: build failed"
        exit 1
    fi

    run_executable "$executable"
    rm -f "$executable"
}

main "$1"