recipes/opkg/update-alternatives-merge.inc

   1 # Moves all entries from /usr/lib/ipkg/alternatives to /usr/lib/opkg/alternatives
   2 # If it exists in both it use file with more lines
   3
   4 pkg_postinst_${PN}_append () {
   5         alternatives_dir_old="${prefix}/lib/ipkg/alternatives"
   6         alternatives_dir_new="${prefix}/lib/opkg/alternatives"
   7         # if ${prefix}/lib/ipkg is already link (probably to ${prefix}/lib/opkg), then nothing needs to be merged and definitely we don't want "rm -rf ${alternatives_dir_old}" to happen
   8         if [ ! -h ${prefix}/lib/ipkg -a -e "${alternatives_dir_old}" ] ; then
   9                 if [ ! -e "${alternatives_dir_new}" ] ; then
  10                         mkdir -p "${alternatives_dir_new}";
  11                 fi
  12                 echo "Old alternatives directory ${alternatives_dir_old} exists, moving entries to new one ${alternatives_dir_new}"
  13                 echo "Creating backup copy of both ${alternatives_dir_old}-backup and ${alternatives_dir_new}-backup"
  14                 cp -Ra "${alternatives_dir_old}" "${alternatives_dir_old}-backup"
  15                 cp -Ra "${alternatives_dir_new}" "${alternatives_dir_new}-backup"
  16
  17                 cd ${alternatives_dir_old}
  18                 for alt_file in * ; do
  19                         if [ ! -e "${alternatives_dir_new}/${alt_file}" ] ; then
  20                                 echo "Moving old '${alternatives_dir_old}/${alt_file}' to '${alternatives_dir_new}/${alt_file}'";
  21                                 mv -f "${alternatives_dir_old}/${alt_file}" "${alternatives_dir_new}/${alt_file}"
  22                         else
  23                                 OLD_LINES=`wc -l ${alternatives_dir_old}/${alt_file} | cut -d/ -f 1`;
  24                                 NEW_LINES=`wc -l ${alternatives_dir_new}/${alt_file} | cut -d/ -f 1`;
  25                                 if [ $OLD_LINES -gt $NEW_LINES ] ; then
  26                                         echo "Replacing '${alternatives_dir_new}/${alt_file}' with '${alternatives_dir_old}/${alt_file}'";
  27                                         mv -f "${alternatives_dir_old}/${alt_file}" "${alternatives_dir_new}/${alt_file}"
  28                                 elif [ $OLD_LINES -eq $NEW_LINES ] ; then
  29                                         if diff -q "${alternatives_dir_new}/${alt_file}" "${alternatives_dir_old}/${alt_file}" >/dev/null ; then
  30                                                 echo "'${alternatives_dir_new}/${alt_file}' is the same"
  31                                         else
  32                                                 echo "WARN: You have to update manually if needed. Please check: diff '${alternatives_dir_old}-backup/${alt_file}' '${alternatives_dir_new}-backup/${alt_file}'"
  33                                         fi
  34                                 else
  35                                         echo "WARN: '${alternatives_dir_old}/${alt_file}' is shorter than new one, ignoring, but please check and update manually if needed"
  36                                 fi
  37                         fi
  38                 done
  39                 rm -rf ${alternatives_dir_old}
  40                 echo "Merge finished, old directory '${alternatives_dir_old}' is removed"
  41         fi
  42 }