pkg/pkg

#!/bin/bash

# see also: https://wiki.voidlinux.org/Rosetta_stone

pkg() {
    if test -x /usr/sbin/pkg; then
        # stick with the original
        return /usr/sbin/pkg $*
    fi

    arg=$1 # the sub command
    shift  # pass everything else to $tool

    # no sudo if root
    sudo=""
    if test $EUID -ne 0; then
        sudo="sudo"
    fi

    # getopts
    case $arg in
        info|list|search|install|remove|add|which|update|depends)
            :
            ;;
        *)
            echo "Usage: pkg info|list|search|which|install|add|remove|update|depends"
            exit 1
            ;;
    esac

    # package management command lines
    
    # wiki:
    # https://wiki.debian.org/DebianPackageManagement
    declare -A APT=([info]="dpkg -l"
                    [list]="dpkg -L"
                    [search]="apt-cache search"
                    [install]="$sudo apt-get install"
                    [remove]="$sudo dpkg -r"
                    [add]="$sudo dpkg -i"
                    [which]="dpkg-query -S"
                    [update]="$sudo apt-get update && $sudo apt-get upgrade"
                    [depends]="apt-cache depends")

    # void handbook:
    # https://docs.voidlinux.org/xbps/index.html
    declare -A XBP=([info]="xbps-query -l"
                    [list]="xbps-query -f"
                    [search]="xbps-query -Rs"
                    [install]="$sudo xbps-install"
                    [add]="$sudo xbps-install"
                    [remove]="$sudo xbps-remove -R"
                    [which]="xbps-query -o"
                    [update]="$sudo xbps-install -Su"
                    [depends]="xbps-query --fulldeptree")

    # man page:
    # https://archlinux.org/pacman/pacman.8.html
    declare -A PAC=([info]="pacman -Q"
                    [list]="pacman -Ql"
                    [search]="pacman -Ss"
                    [install]="$sudo pacman -S"
                    [remove]="$sudo pacman -Rs"
                    [add]="$sudo pacman -U"
                    [which]="pkgfile -s"
                    [update]="$sudo pacman -Syu"
                    [depends]="pacman -Qi")

    # cheat sheet:
    # https://access.redhat.com/sites/default/files/attachments/rh_yum_cheatsheet_1214_jcs_print-1.pdf
    declare -A YUM=([info]="yum list installed"
                    [list]="yum info"
                    [search]="yum search"
                    [install]="$sudo yum install"
                    [remove]="$sudo yum autoremove"
                    [add]="$sudo yum install"
                    [which]="yum provides"
                    [update]="$sudo yum update && $sudo yum upgrade"
                    [depends]="yum deplist")

    # man page:
    # https://en.opensuse.org/SDB:Zypper_manual_(plain)
    declare -A ZYP=([info]="zypper search --installed-only"
                    [list]="rpm -ql"
                    [search]="zypper search"
                    [install]="$sudo zypper install"
                    [remove]="$sudo zypper remove -u"
                    [add]="$sudo zypper install"
                    [which]="zypper search -f"
                    [update]="$sudo zypper update"
                    [depends]="zypper info --requires")
     
    if type apt-get > /dev/null 2>&1; then
        ${APT[$arg]} $*
    elif type xbps-query > /dev/null 2>&1; then
        ${XBP[$arg]} $*
    elif type yum > /dev/null 2>&1; then
        ${YUM[$arg]} $*
    elif type dnf > /dev/null 2>&1; then
        # same shit
        alias yum=dnf
        ${YUM[$arg]} $*
    elif type pacman > /dev/null 2>&1; then
        ${PAC[$arg]} $*
    elif type zypper > /dev/null 2>&1; then
        ${ZYP[$arg]} $*
    else
        echo "Oops, no known package management tool could be found!"
        exit 1
    fi
}

pkg $*