zfs-pacman-hook/pacman-zfs-snapshot.sh

#!/bin/bash

declare -a pkgs
while read pkg; do
    pkgs+=("${pkg}")
done

declare conf_file
conf_file='/etc/pacman-zfs-snapshot.conf'

declare important_names snaps_trivial_keep snaps_important_keep snaps_trivial_suffix snaps_important_suffix
if [[ -r "${conf_file}" ]]; then
    source "${conf_file}"
fi

if [[ ! "${important_names}" ]]; then important_names='linux'; fi
if [[ ! "${snaps_trivial_keep}" ]]; then snaps_trivial_keep='5'; fi
if [[ ! "${snaps_important_keep}" ]]; then snaps_important_keep='5'; fi
if [[ ! "${snaps_trivial_suffix}" ]]; then snaps_trivial_suffix='trv'; fi
if [[ ! "${snaps_important_suffix}" ]]; then snaps_important_suffix='imp'; fi

function split_pkgs_by_importance () {
    local pkgs_in_transaction
    pkgs_in_transaction=("${@}")
    for pkg in "${pkgs_in_transaction[@]}"; do
        if grep -Piq -- '^'"${important_names}"'$' <<<"${pkg}"; then
            important_pkgs_in_transaction+=("${pkg}")
        else
            trivial_pkgs_in_transaction+=("${pkg}")
        fi
    done
}

function main () {
    local pkgs_in_transaction
    pkgs_in_transaction=("${@}")

    declare -a important_pkgs_in_transaction trivial_pkgs_in_transaction
    split_pkgs_by_importance "${pkgs_in_transaction[@]}"

    
    #for pkg in "${!important_pkgs_in_transaction[@]}"; do
    #    printf -- 'Array item '"'"'%s'"'"' equals '"'"'%s'"'"'\n' "${pkg}" "${important_pkgs_in_transaction[${pkg}]}"
    #done
}

main "${pkgs[@]}"