#! /bin/bash 
# This script updates rpms  distribution trees  found in  one or two arguments
# given to this script. The first is assumed to be in the Mandrake/RPMS
# directory below this first base name, while the second is in the
# Mandrake/RPMS1 directory below the second argument given
# Note that you need only give the first if you wish.
# The old rpms will be placed in $OLDDIR.
# The new rpms should be located in $UPDDIR.

# NEWFILES  determines whether new files (ie files not found in the 
#directory tree) are added to one of the  CD RPMS directories or not. 
# It should be set to the number of the CD to which the files should be added
# if they are new. Do Not use 0 if you do not want new files copied. 

NEWFILES="99"

if [ $NEWFILES -lt 1 -o $NEWFILES -gt $# ]; then
   NEWFILES="99"
fi

if [ $# -le  1 -o $# -gt 3 ]; then
  echo "Usage: update-CD updates_dir CD1dir [CD2dir]"
  echo "       where update-CD has the updated files in the RPMS directory,"
  echo "    and CD1dir and CD2dir are the tops of the tree containing the CD files"
  exit 1
fi
UPROOT="$1"
RPMDIR[1]="$2/Mandrake/RPMS"
RPMDIR[2]=""
NUM_CD="1"
if [ "$#" = "3" ]; then
 RPMDIR[2]="$3/Mandrake/RPMS2"
 NUM_CD="1 2"
fi
NEWRPM="${RPMDIR[$NEWFILES]}"

for i in $NUM_CD
do
 if [  ! -d ${RPMDIR[$i]} ]; then
  echo  CD$i RPM directory ${RPMDIR[$i]} does not exist.
  exit 1
 fi  
done
 
UPDDIR=${UPROOT}/RPMS
OLDDIR=${UPROOT}/old/RPMS
if [ ! -d $UPDDIR ] ; then
  echo Update directory $UPDDIR does not exit
  exit 1
fi
if [ ! -d $OLDDIR ] ; then
   if  mkdir -p $OLDDIR 
   then
     echo made backup directory $OLDDIR 
   else
     echo Cannot make backup directory
     exit 1
   fi 
   
fi

shopt -s nullglob

for rpm in ${UPDDIR}/*.rpm ; do
#  Get the short name of the rpm file
 NAME=`rpm --queryformat "%{NAME}" -qp $rpm`
 if [ -n "$NAME" ]; then
   for i in $NUM_CD; do
    unset OLDNAME
#     find files in the distributions which start with that name
    for oldrpm in ${RPMDIR[$i]}/${NAME}*.rpm ; do
     if [ -n "$oldrpm" ]; then
#        See if the short name is the same
      if [ `rpm --queryformat "%{NAME}" -qp $oldrpm` = "$NAME" ]; then
        OLDNAME=$oldrpm;
        break
      fi
     fi
    done
#    copy the updated rpm file to the distribution and save the old file
    if [ -n "$OLDNAME" ]; then
      if [ "`basename $rpm`" != "`basename $OLDNAME`" ]; then
        mv -v $OLDNAME $OLDDIR
        cp -pv $rpm ${RPMDIR[$i]}
      fi
    fi
  done
#  If no rpm of same name found on any distribution, place into appropriate
#     distribution according to NEWFILES
  if [ -z "$OLDNAME" ]; then
      if [ -n "${RPMDIR[$NEWFILES]}" ]; then
         echo --- $NAME is new-- copying to ${RPMDIR[$NEWFILES]}
          cp -pv $rpm ${RPMDIR[$NEWFILES]}
     fi
  fi

 fi
done

chmod -R a+rX $2/Mandrake/RPMS
if [ $# -eq 3 ]; then
  chmod -R a+rX $3/Mandrake
fi

exit 0