#! /usr/bin/env bash

pushd . > /dev/null
cd $(git rev-parse --show-toplevel)
ARCHIVE=${1:-/tmp/$(basename $PWD .git)-$(git branch --show-current).git}
[[ -d "$ARCHIVE" || "$ARCHIVE" != "${ARCHIVE%/}" ]] \
    && ARCHIVE=${1%/}/$(basename $PWD .git)-$(git branch --show-current).git
DIRNAME=$(dirname $ARCHIVE)
[[ ! -d "$DIRNAME" ]] \
    && echo "Directory $DIRNAME is missing, creating it..." \
    && mkdir -p $DIRNAME
ARCHIVE=$DIRNAME/$(basename $ARCHIVE .tgz).tgz
printf "Archiving into %s...\n\n" "$ARCHIVE"
tar czvf $ARCHIVE $(git diff --diff-filter=ACMRT --name-only "${@:2}") \
    && printf "\nDone.\n\n"
popd > /dev/null