cmd-supermin-run

#!/usr/bin/env bash
set -euo pipefail

dn=$(dirname "$0")
# shellcheck source=src/cmdlib.sh
. "${dn}"/cmdlib.sh

print_help() {
    echo "Usage: cosa supermin-run [--cache|--snapshot] COMMAND [ARG...]" >&2
}

if [ $# = 0 ]; then
    print_help
    exit 1
fi

need_cache_dir=0
case "$1" in
    --cache)
        shift
        set -- runvm_with_cache -- "$@"
        need_cache_dir=1
        ;;
    --snapshot)
        shift
        set -- runvm_with_cache_snapshot on -- "$@"
        need_cache_dir=1
        ;;
    --*)
        echo "unrecognized option: $1"
        print_help
        exit 1
        ;;
    *)
        set -- runvm -- "$@"
        ;;
esac

# force caller to create tmp/ and possibly cache/ rather than surprisingly
# auto-create them
if [ ! -d tmp ]; then
    echo 'Need tmp/ dir for supermin to work' >&2
    exit 1
fi
if [ $need_cache_dir = 1 ] && [ ! -d cache ]; then
    echo 'Need cache/ dir for caching' >&2
    exit 1
fi

workdir=$(pwd)
export workdir

"$@"