file_util: consolidate hex/unhex routines

[oweals/opkg-lede.git] / utils / update-alternatives.in

diff --git a/utils/update-alternatives.in b/utils/update-alternatives.in
index a49cc090342ebdbd36d2023a6b9002ec467bf809..34d89f12aa55b1881845b4b4f693451006ce47a3 100644 (file)
--- a/utils/update-alternatives.in
+++ b/utils/update-alternatives.in
@@ -95,10 +95,8 @@ find_best_alt() {
 
        link=$OPKG_OFFLINE_ROOT/`head -n 1 $ad/$name`
 
-##     path=`sed -ne "1!p" $ad/$name | sort -nr -k2 | head -1 | sed 's/ .*//'`
-## busybox safe:
-       path=`sed -ne "1!p" $ad/$name | sed -e "s/\(.*\) \(.*\)/\2 \1/g" | sort -nr | head -n 1 | sed 's/[^ ]* //'`
-       if [ -z "$path" ]; then
+       prio=`sed -ne "1!p" $ad/$name | sed -e "s/\(.*\) \(.*\)/\2 \1/g" | sort -nr | head -n 1 | sed 's/ [^ ]*$//'`
+       if [ -z "$prio" ]; then
                echo "update-alternatives: removing $link as no more alternatives exist for it"
                rm $ad/$name
                if [ -L $link ]; then
@@ -107,11 +105,21 @@ find_best_alt() {
                return 0
        fi
 
+       ## Find last line with highest priority.
+       path=`grep "${prio}$" $ad/$name | tail -n 1 | sed 's/ [^ ]*$//'`
+
        if [ ! -e $link -o -L $link ]; then
                local link_dir=`dirname $link`
                if [ ! -d $link_dir ]; then
                        mkdir -p $link_dir
                fi
+               if [ -h $link -a -d $link ]; then
+                       # If $link exists and the target is a directory,
+                       # 'ln -sf $path $link' doesn't replace the link to
+                       # that directory, it creates new link inside.
+                       echo "update-alternatives: Removing $link".
+                       rm -f $link
+               fi
                ln -sf $path $link
                echo "update-alternatives: Linking $link to $path"
        else