base-files: add update_alternatives function

The APK package manager does not support handling of package
alternatives itself, so implement it via a simple shell script.

Signed-off-by: Paul Spooren <mail@aparcar.org>
This commit is contained in:
Paul Spooren 2024-05-03 17:53:52 +02:00
parent d788ab376f
commit 3010ab87bc

View File

@ -286,6 +286,55 @@ add_group_and_user() {
fi
}
update_alternatives() {
local root="${IPKG_INSTROOT}"
local action="$1"
local pkgname="$2"
if [ -f "$root/lib/apk/packages/${pkgname}.alternatives" ]; then
for pkg_alt in $(cat $root/lib/apk/packages/${pkgname}.alternatives); do
local best_prio=0;
local best_src="/bin/busybox";
pkg_prio=${pkg_alt%%:*};
pkg_target=${pkg_alt#*:};
pkg_target=${pkg_target%:*};
pkg_src=${pkg_alt##*:};
if [ -e "$root/$target" ]; then
for alts in $root/lib/apk/packages/*.alternatives; do
for alt in $(cat $alts); do
prio=${alt%%:*};
target=${alt#*:};
target=${target%:*};
src=${alt##*:};
if [ "$target" = "$pkg_target" ] &&
[ "$src" != "$pkg_src" ] &&
[ "$best_prio" -lt "$prio" ]; then
best_prio=$prio;
best_src=$src;
fi
done
done
fi
case "$action" in
install)
if [ "$best_prio" -lt "$pkg_prio" ]; then
ln -sf "$pkg_src" "$root/$pkg_target"
echo "add alternative: $pkg_target -> $pkg_src"
fi
;;
remove)
if [ "$best_prio" -lt "$pkg_prio" ]; then
ln -sf "$best_src" "$root/$pkg_target"
echo "add alternative: $pkg_target -> $best_src"
fi
;;
esac
done
fi
}
default_postinst() {
local root="${IPKG_INSTROOT}"
local pkgname="$(basename ${1%.*})"