#!/bin/sh
# Git pre-commit hook storing permissions and ownerships.

mtreeignore=$(mktemp --suffix mtree)

mtree_exclude() {
    echo .git
    # Get ignored files from git https://stackoverflow.com/a/467053
    find . -not -path './.git/*' | git check-ignore --stdin
}

# In case .mtree doens't exists yet, we still want it in the specification
# to be generated.
if [ -f .mtree ]; then
   touch .mtree
fi

mtree_exclude > "$mtreeignore"
trap 'rm --force "$mtreeignore"' EXIT

mtree -x -c \
    -p . \
    -k uname,gname,mode \
    -X "$mtreeignore" > .mtree

git add .mtree