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# Moves all entries from /usr/lib/ipkg/alternatives to /usr/lib/opkg/alternatives
# If it exists in both it use file with more lines
pkg_postinst_${PN}_append () {
alternatives_dir_old="${prefix}/lib/ipkg/alternatives"
alternatives_dir_new="${prefix}/lib/opkg/alternatives"
# 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
if [ ! -h ${prefix}/lib/ipkg -a -e "${alternatives_dir_old}" ] ; then
if [ ! -e "${alternatives_dir_new}" ] ; then
mkdir -p "${alternatives_dir_new}";
fi
echo "Old alternatives directory ${alternatives_dir_old} exists, moving entries to new one ${alternatives_dir_new}"
echo "Creating backup copy of both ${alternatives_dir_old}-backup and ${alternatives_dir_new}-backup"
cp -Ra "${alternatives_dir_old}" "${alternatives_dir_old}-backup"
cp -Ra "${alternatives_dir_new}" "${alternatives_dir_new}-backup"
cd ${alternatives_dir_old}
for alt_file in * ; do
if [ ! -e "${alternatives_dir_new}/${alt_file}" ] ; then
echo "Moving old '${alternatives_dir_old}/${alt_file}' to '${alternatives_dir_new}/${alt_file}'";
mv -f "${alternatives_dir_old}/${alt_file}" "${alternatives_dir_new}/${alt_file}"
else
OLD_LINES=`wc -l ${alternatives_dir_old}/${alt_file} | cut -d/ -f 1`;
NEW_LINES=`wc -l ${alternatives_dir_new}/${alt_file} | cut -d/ -f 1`;
if [ $OLD_LINES -gt $NEW_LINES ] ; then
echo "Replacing '${alternatives_dir_new}/${alt_file}' with '${alternatives_dir_old}/${alt_file}'";
mv -f "${alternatives_dir_old}/${alt_file}" "${alternatives_dir_new}/${alt_file}"
elif [ $OLD_LINES -eq $NEW_LINES ] ; then
if diff -q "${alternatives_dir_new}/${alt_file}" "${alternatives_dir_old}/${alt_file}" >/dev/null ; then
echo "'${alternatives_dir_new}/${alt_file}' is the same"
else
echo "WARN: You have to update manually if needed. Please check: diff '${alternatives_dir_old}-backup/${alt_file}' '${alternatives_dir_new}-backup/${alt_file}'"
fi
else
echo "WARN: '${alternatives_dir_old}/${alt_file}' is shorter than new one, ignoring, but please check and update manually if needed"
fi
fi
done
rm -rf ${alternatives_dir_old}
echo "Merge finished, old directory '${alternatives_dir_old}' is removed"
fi
}
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