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#!/bin/sh
#include core

## begin punani DB
punani_pacman_=
punani_yum_=
punani_aptget_=

punani_pacman_git=git
punani_yum_git=git
punani_aptget_git=git-core

punani_pacman_python2=python2
punani_yum_python2=python
punani_aptget_python2=python

punani_pacman_python3=python
punani_aptget_python3=python3

punani_pacman_hostname=inetutils
punani_aptget_hostname=hostname

punani_pacman_hostname=inetutils
punani_aptget_hostname=hostname

punani_pacman_make=make
punani_yum_make=make
punani_aptget_make=make

punani_pacman_tinc=tinc
punani_yum_tinc=tinc
punani_aptget_tinc=tinc

punani_pacman_nano=nano
punani_yum_nano=nano
punani_aptget_nano=nano
## end punani DB

punani_resolve_package(){
  : ${PACKER_CMD?PACKER_CMD is not set,bailing out}
  pkg=${1?please provide package name to resolve}
  PACKER_DB=$(printf  ${PACKER_CMD}| sed 's/-//g')
  eval printf \"\${punani_${PACKER_DB}_${pkg}-}\" | grep .
}
punani(){
  ! is_root && error "punani requires super-user rights" && return 1
  ACTION="$1"; shift
  PKGS="$*"
  if ! :; then : # dummy case, so the rest has a common format
  elif exists apt-get;then
    PACKER_CMD='apt-get'
    INSTALL_PARAM='-y install'
    REMOVE_PARAM='-y remove'
  elif exists pacman;then
    PACKER_CMD='pacman'
    INSTALL_PARAM='--noconfirm -S --needed'
    REMOVE_PARAM='-Rcs'
  elif exists yum;then
    PACKER_CMD='yum'
    INSTALL_PARAM='-y install'
    REMOVE_PARAM='-y remove'
  elif exists brew;then
    PACKER_CMD='brew'
    INSTALL_PARAM='install'
    REMOVE_PARAM='remove'
  else
    error "Error 2: no known package manager found; no punani for you!"
    return 1
  fi
  info "using $PACKER_CMD for install"
  RESOLVED=""
  if test -n "$PKGS"; then
    for PKG in $PKGS; do
      RES="$(punani_resolve_package $PKG)"
      test  -z "$RES" && error "could not resolve '$PKG'; no punani for you!"&& return 23
      RESOLVED="${RESOLVED+$RESOLVED }$RES"
    done
  else
    error "no PACKAGE specified."
    ACTION="usage"
  fi
  case "$ACTION" in 
    install)
        eval $PACKER_CMD $INSTALL_PARAM $RESOLVED || error "Cannot install $PKG!"
      ;;
    remove)
        eval $PACKER_CMD $REMOVE_PARAM $RESOLVED || error "Cannot remove $PKG!"
      ;;
    *)
      error "usage: punani (install|remove) PACKAGE..."
      return 23
  esac
}