chkpkg

#!/bin/bash
# display summary of package installation states and output list of missing packages
# useful for checking if build-deps are satisfied, e.g.:
#   chkpkg <build dep list>
#   chkpkg $(list-bdep <pkg>)
# TODO:
#   - what if one of providing package(s) for virtual package is also virtual?

red=$(tput bold; tput setaf 1)
green=$(tput bold; tput setaf 2)
blue=$(tput bold; tput setaf 6)
grey=$(tput bold; tput setaf 7)
reset=$(tput sgr0)

install_list=()
virt_pkg_list=()    # list containing one providing package for each virtual package
index=0
v_index=0

get_package_state()
{
    pkg_info="$(apt-cache policy $1)"

    if [[ -n $(echo "$pkg_info" | tail -n 1 | grep "Version table:") ]]; then
        echo "       ${blue}virtual${reset}"
    elif [[ -n $(echo "$pkg_info" | grep "Installed: (none)") ]]; then
        echo "       ${red}missing${reset}"
    elif [[ -z $pkg_info ]]; then
        echo "       ${grey}invalid${reset}"
    else
        echo "     ${green}installed${reset}"
    fi
}

for pkg in $*; do
    pkg_state=$(get_package_state "$pkg")

    echo -e "$pkg_state\t$pkg"
    if [[ -n $(echo "$pkg_state" | grep "virtual") ]]; then
        pkg_details=$(apt-cache showpkg "$pkg")
        line=$(($(echo "$pkg_details" | grep -n "^Reverse Provides: $" | cut -d ":" -f 1) + 1))
        suggest_pkg=""
        satisfied=0

        # uniq to remove duplicate entries from other release branches
        pkg_provides=$(echo "$pkg_details" | sed -n "$line,$ p" | cut -d " " -f 1 | uniq)

        for prov in $pkg_provides; do
            prov_pkg_state=$(get_package_state "$prov")
            echo -e "$prov_pkg_state\t   $prov"

            # suggest first providing package in list
            [[ -z $suggest_pkg ]] && suggest_pkg="$prov"
            [[ -n $(echo "$prov_pkg_state" | grep "installed") ]] && satisfied=1
        done

        # only suggest providing package if virtual dependency not satisfied
        # note: some virtual packages list no provides (old entries?)
        if [[ $satisfied == 0 && -n $suggest_pkg ]]; then
            virt_pkg_list[$v_index]="$suggest_pkg"
            v_index=$((v_index + 1))
        fi
    elif [[ -n $(echo "$pkg_state" | grep "missing") ]]; then
        install_list[$index]="$pkg"
        index=$((index + 1))
    fi
done

if [[ ${#install_list[@]} > 0 ]]; then
    echo -en "\n# sudo aptitude install "
    for pkg in "${install_list[@]}"; do
        echo -n "$pkg "
    done
    echo ""
fi

if [[ ${#virt_pkg_list[@]} > 0 ]]; then
    echo -n "# sudo aptitude install "
    for pkg in "${virt_pkg_list[@]}"; do
        echo -n "$pkg "
    done
    echo ""
fi