path: root/scripts/updatesync

#!/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='2.9.8'

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
}

die()
{
  echo "updatesync: $*" >&2
  rm -rf $ustmpdir
  exit 1
}

check_option() {
  local i
  for i in ${options[@]}; do
    local uc=`echo $i | tr [:lower:] [:upper:]`
    local lc=`echo $i | tr [:upper:] [:lower:]`
    if [ "$uc" = "$1" -o "$lc" = "$1" ]; then
      echo $1
      return
    fi
  done
}

get_md5checksum()
{
  if [ "$pkgdir" != "" ]; then
    pkgfile="$pkgdir/$pkgname-$pkgver-$pkgrel.pkg.tar.gz"
  else
    pkgfile="$destdir/$pkgname-$pkgver-$pkgrel.pkg.tar.gz"
  fi
  if [ -f $pkgfile ]; then
    md5line=`md5sum $pkgfile`
    [ ! -z "$md5line" ] && pkgmd5sum=${md5line%  *}
    echo $pkgmd5sum
  fi
  return 0
}

db_write_entry()
{
  unset pkgname pkgver pkgrel pkgdesc force
  unset groups replaces provides depends conflicts options
  source $1 || return 1
  cd $ustmpdir
  mkdir $pkgname-$pkgver-$pkgrel || return 1
  cd $pkgname-$pkgver-$pkgrel
  # desc
  : >desc
  echo "%NAME%" >>desc
  echo "$pkgname" >>desc
  echo "" >>desc
  echo "%VERSION%" >>desc
  echo "$pkgver-$pkgrel" >>desc
  echo "" >>desc
  if [ -n "$pkgdesc" ]; then
    echo "%DESC%" >>$entry
    echo "$pkgdesc" >>$entry
    echo "" >>$entry
  fi
  if [ ${#groups[*]} -gt 0 ]; then
    echo "%GROUPS%" >>$entry
    for it in "${groups[@]}"; do
      echo "$it" >>$entry
    done
    echo "" >>$entry
  fi
  if [ -n $csize ]; then
    echo "%CSIZE%" >>$entry
    echo "$csize" >>$entry
    echo "" >>$entry
  fi
  if [ ! -z $pkgmd5sum ]; then
    echo "%MD5SUM%" >>$entry
    echo "$pkgmd5sum" >>$entry
    echo "" >>$entry
  fi
  if [ ${#replaces[*]} -gt 0 ]; then
    echo "%REPLACES%" >>desc
    for it in "${replaces[@]}"; do
      echo "$it" >>desc
    done
    echo "" >>desc
  fi
  if [ "$force" = "y" -o "$force" = "Y" -o "`check_option FORCE`" ]; then
    echo "%FORCE%" >>desc
    echo "" >>desc
  fi
  # depends
  : >depends
  if [ ${#depends[*]} -gt 0 ]; then
    echo "%DEPENDS%" >>depends
    for it in "${depends[@]}"; do
      echo "$it" >>depends
    done
    echo "" >>depends
  fi
  if [ ${#conflicts[*]} -gt 0 ]; then
    echo "%CONFLICTS%" >>depends
    for it in "${conflicts[@]}"; do
      echo "$it" >>depends
    done
    echo "" >>depends
  fi
  if [ ${#provides[*]} -gt 0 ]; then
    echo "%PROVIDES%" >>depends
    for it in "${provides[@]}"; do
      echo "$it" >>depends
    done
    echo "" >>depends
  fi
}

delete_entry()
{
  echo $1 | grep PKGBUILD 2>&1 >/dev/null
  if [ $? -eq 0 ]; then
    source $1
  else
    pkgname=$1
  fi
  for i in *; do
    if [ "${i%-*-*}" = "$pkgname" ]; then
      echo "updatesync: deleting $i" >&2
      rm -rf $i
    fi
  done
}

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

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

action=$1
pkgdb=$2
option=$3
curdir="`pwd`"
pkgdir=$curdir
if [ "$4" != "" ]; then
  pkgdir=$4
fi

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

ustmpdir=$(mktemp -d /tmp/updatesync.XXXXXXXXXX) || exit 1

cd $ustmpdir
if [ ! -f $pkgdb ]; then
  if [ ! -f $curdir/$pkgdb ]; then
    echo "updatesync: $pkgdb not found"
    exit 1
  fi
  pkgdb=$curdir/$pkgdb
fi

if [ "$action" = "upd" -a ! -f $option ]; then
  if [ ! -f $curdir/$option ]; then
    echo "updatesync: $option not found"
    exit 1
  fi
  option=$curdir/$option
fi

echo "updatesync: uncompressing to $ustmpdir..." >&2
tar -xzf $pkgdb || die "error uncompressing $pkgdb"
if [ "$action" = "upd" ]; then
  # INSERT / UPDATE
  delete_entry $option

  source $option || die "errors parsing $option"
  if [ "$pkgdir" != "" ]; then
    pkgfile="$pkgdir/$pkgname-$pkgver-$pkgrel.pkg.tar.gz"
  else
    pkgfile="$destdir/$pkgname-$pkgver-$pkgrel.pkg.tar.gz"
  fi
  if [ -f $pkgfile ]; then
    csize=`du -b $pkgfile | cut -f1`
    pkgmd5sum=`get_md5checksum $pkgfile`
    [ -z $pkgmd5sum ] && die "error generating checksum for $pkgfile"
    echo "updatesync: creating entry for $option" >&2
    db_write_entry $option || die "error writing entry for $option"
  else
    echo "updatesync: missing package: $pkgfile" >&2
  fi
else
  # DELETE
  delete_entry $option
fi

echo "updatesync: compressing to $pkgdb..." >&2
cd $ustmpdir
tar c * | gzip -9 >$pkgdb || die "error writing to $pkgdb"

cd $curdir
rm -rf $ustmpdir

exit 0
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