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#!/bin/bash
# 
#   updatesync
#  
#   Copyright (c) 2004 by Jason Chu <jason@archlinux.org>
#   Derived from gensync (c) 2002-2006 Judd Vinet <jvinet@zeroflux.org>
#  
#   This program is free software; you can redistribute it and/or modify
#   it under the terms of the GNU General Public License as published by
#   the Free Software Foundation; either version 2 of the License, or
#   (at your option) any later version.
# 
#   This program is distributed in the hope that it will be useful,
#   but WITHOUT ANY WARRANTY; without even the implied warranty of
#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#   GNU General Public License for more details.
#  
#   You should have received a copy of the GNU General Public License
#   along with this program; if not, write to the Free Software
#   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 
#   USA.
#

myver='3.0.0'

# functions

usage() {
  echo "updatesync $myver"
  echo "usage: $0 <action> <destfile> <option> [package_directory]"
  echo
  echo "updatesync will update a sync database by reading a PKGBUILD and"
  echo "modifying the destfile. updatesync updates the database in a temporary"
  echo "directory and then compresses it to <destfile>."
  echo
  echo "There are two types of actions:"
  echo
  echo "upd - Will update a package's entry or create it if it doesn't exist."
  echo "      It takes the package's PKGBUILD as an option."
  echo "del - Will remove a package's entry from the db."
  echo "      It takes the package's name as an option."
  echo
  echo "updatesync will calculate md5sums of packages in the same directory as"
  echo "<destfile>, unless an alternate [package_directory] is specified."
  echo
  echo "example:  updatesync upd /home/mypkgs/custom.db.tar.gz PKGBUILD"
  echo
  echo
  exit 0
}

error () {
  echo "==> ERROR: $*" >&2
}

die () {
  error $*
  exit 1
}

check_force () {
  local i
  for i in ${options[@]}; do
    local lc=$(echo $i | tr [:upper:] [:lower:])
    if [ "$lc" = "force" ]; then
      true
    fi
  done
  false
}

# PROGRAM START

if [ $# -lt 3 ]; then
  usage
  exit 1
fi

if [ "$1" = "-h" -o "$1" = "--help" ]; then
  usage
  exit 0
fi

# source system and user makepkg.conf
if [ -r /etc/makepkg.conf ]; then
  source /etc/makepkg.conf
else
  echo "ERROR: /etc/makepkg.conf not found. Can not continue." >&2
  exit 1 # $E_CONFIG_ERROR # TODO: error codes
fi

if [ -r ~/.makepkg.conf ]; then
  source ~/.makepkg.conf
fi

if [ "$1" != "upd" -a "$1" != "del" ]; then
  usage
  exit 1
fi

action=$1
pkgdb=$2
option=$3
pkgdir="$(pwd)"
if [ "$4" != "" ]; then
  pkgdir="$4"
fi
opt_force=""

if [ ! -f "$option" ]; then
  die "$option not found"
fi

if [ "$action" = "upd" ]; then # INSERT / UPDATE
  unset pkgname pkgver pkgrel options

  source $option || die "failed to parse $option"
  pkgfile="$pkgdir/$pkgname-$pkgver-$pkgrel-$CARCH.$PKGEXT"

  if [ ! -f "$pkgfile" ]; then
    die "could not find $pkgname-$pkgver-$pkgrel-$CARCH.$PKGEXT - aborting"
  fi

  if check_force; then
    opt_force="--force"
  fi

  repo-add "$pkgdb" $opt_force "$pkgfile"
else # DELETE
  fname="$(basename $option)"
  if [ "$fname" = "PKGBUILD" ]; then
    unset pkgname pkgver pkgrel options
    source $option
  else
    pkgname=$1
  fi

  repo-remove "$pkgdb" "$pkgname"
fi

exit 0
# vim: set ts=2 sw=2 noet: