pu

#!/bin/sh
## $Id: pu,v 1.1 2002/12/05 17:04:15 yozo Exp $

LS_COMMAND=ls
PKG_ADD=/usr/sbin/pkg_add
PKG_DELETE=/usr/sbin/pkg_delete
PKG_INFO=/usr/sbin/pkg_info
PKGDIR=/usr/ports/packages/`uname -m`/All

EXTENSION=".tgz"
DEBUG=
VERBOSE=
progname=$0
requiredpackages="" ## set inside get_requiredpackages()
OUTPUT_PREFIX=" "
SHOWPACKAGENAME=

usage(){
  echo "usage: ${progname} [-help] [-debug] [-prefix string] [-showpackage] [-verbose] pkgname" 1>&2
}

get_requiredpackages(){
  pkgname="$1"
  requiredpackages=`${PKG_INFO} -R ${pkgname} | \
                  sed -e '1,/^Required by:/d' -e '/^$/d'`
}

## NOT USED ##
showpkgtree(){
  prefix="${PREFIX}"
  pkgname="${PACKAGENAME}"
  requiredpkglist="${REQUIREDPACKAGES}"

  echo "showpkgtree: prefix=(${prefix})"
  echo "showpkgtree: pkgname=${pkgname}"
  echo "showpkgtree: rpkglist=${requiredpkglist}"

  if [ -z "${requiredpkglist}" ]; then
    echo "${prefix}${pkgname}"
  else
    for i in "${requiredpkglist}" ; do
      get_requiredpackages ${i}
      showpkgtree "${prefix}o " ${i} "${requiredpackages}"
    done
  fi
}

#### option analysis ####

while [ $# -gt 0 ]; do
  ## echo "arg: $1" 1>&2
  case "$1" in
    -d*)
      DEBUG="-d"
      shift
      ;;
    -h*)
      usage
      exit 1
      ;;
    -prefix*)
      shift
      OUTPUT_PREFIX="$1"
      shift
      ;;
    -show*)
      SHOWPACKAGENAME="-showpackage"
      shift
      ;;
    -verb*)
      VERBOSE="-v"
      shift
      ;;
    --)
      if [ -n "${DEBUG}" ]; then
        echo "option ended." 1>&2
      fi
      shift
      break
      ;;
    -*)
      echo "unknown option ($1)" 1>&2
      usage
      exit 2
      ;;
    *)
      break
      ;;
  esac
done

if [ ! $# -eq 1 ]; then
  echo "argument should be only ONE." 1>&2
  usage
  exit 3
fi

if [ -n ${OUTPUT_PREFIX} ]; then
  OUTPUT_PREFIX="${OUTPUT_PREFIX}"
fi

if [ -n "${DEBUG}" ]; then
  echo "DEBUG on." 1>&2
  echo "${progname}: argument ($1)." 1>&2
  echo "OUTPUT_PREFIX: ${OUTPUT_PREFIX}" 1>&2
  if [ -n "$VERBOSE}" ]; then
    echo "VERBOSE on." 1>&2
  else
    echo "VERBOSE off." 1>&2
  fi
fi

#### check installed package name and new package file ####

packages=`${PKG_INFO} -e "$1"`
if [ ! $? -eq 0 ]; then
  echo "${progname}: $1 NOT found."
  exit 10
fi

if [ -n "${DEBUG}" ]; then
  echo "packages: ${packages}" 1>&2
fi

num=`echo "${packages}" | wc -l`

if [ ! ${num} -eq 1 ]; then
  echo "${progname}: too many packages found." 1>&2
  echo "${packages}" 1>&2
  exit 20
fi

packagename=${packages}

if [ -n "${DEBUG}" ]; then
  echo "${progname}: installed package ${packagename}" 1>&2
fi

if [ ! -f ${PKGDIR}/${packagename}${EXTENSION} ]; then
  echo "${progname}: new package file NOT found." 1>&2
  exit 30
fi

if [ -n "${DEBUG}" ]; then
  echo -n "${progname}: new package file: "
  ls ${PKGDIR}/${packagename}${EXTENSION}
fi

#### now check how many packages require this package ####

get_requiredpackages ${packagename}

if [ -z "${requiredpackages}" ]; then
  if [ -n "${VERBOSE}" ]; then
    echo "${progname}: NO packages depend on ${packagename}."
  fi
else
  if [ -n "${SHOWPACKAGENAME}" ]; then
    echo "${OUTPUT_PREFIX}${packagename}:"
  fi
  for i in ${requiredpackages} ; do
    echo "${OUTPUT_PREFIX}  <-- ${i}"
    ${progname} ${DEBUG} -prefix "${OUTPUT_PREFIX}${OUTPUT_PREFIX} " ${i}
  done

##   ## should be merged to one loop (to be depth-first).
##   for i in ${requiredpackages} ; do
##     ${progname} ${DEBUG} -prefix "${OUTPUT_PREFIX}${OUTPUT_PREFIX} " ${i}
##   done

fi