epm release-upgrade: initial support upgrade from p7 to p8 and p6 to p7

bin/epm-release_upgrade

@@ -17,29 +17,65 @@
 # along with this program. If not, see <http://www.gnu.org/licenses/>.
 #
 
+__replace_alt_version_in_repo()
+{
+	local i
+	assure_exists apt-repo
+	echo "Upgrading $DISTRNAME from $1 to $2 ..."
+	docmd apt-repo list | sed -e "s|\($1/branch\)|{\1}->$2/branch<|g" | egrep --color -- "$1/branch"
+	confirm "Are these correct changes?" || fatal "Exiting"
+	for i in /etc/apt/sources.list /etc/apt/sources.list.d/*.list ; do
+		[ -s "$i" ] || continue
+		# TODO: only for uncommended strings
+		#sed -i -r -e "s!$1/branch!$2/branch!g" $i
+		regexp_subst "/^ *#/! s!$1/branch!$2/branch!g" $i
+		
+		# TODO: start with improve to [p8] - install some package firstly?
+		regexp_subst "/^ *#/! s s!\[$1\]![alt]/branch!g" $i
+	done
+	docmd apt-repo list
+}
+
 __update_alt_repo_to_next_distro()
 {
 	case "$DISTRVERSION" in
-#		p7)
-#			;;
+		p6)
+			__replace_alt_version_in_repo p6 p7
+			info "Run epm release-upgrade again for update to p8"
+			;;
+		p7)
+			__replace_alt_version_in_repo p7 p8
+			;;
 		*)
-			info "Have no idea how to update from $DISTRVERSION"
+			info "Have no idea how to update from $DISTRNAME $DISTRVERSION"
 			return 1
 	esac
 }
 
 epm_release_upgrade()
 {
+	assure_root
 	info "Starting upgrade whole system to the next release"
 	info "Check also http://wiki.etersoft.ru/Admin/UpdateLinux"
 
-	case $PMTYPE in
-	apt-rpm)
+	case $DISTRNAME in
+	ALTLinux)
 		docmd epm update
 		docmd epm install apt rpm
+		pkg_filenames= epm_repofix
 		__update_alt_repo_to_next_distro || exit
 		docmd epm Upgrade
 		docmd epm update-kernel
+		return
+		;;
+	*)
+		;;
+	esac
+
+	case $PMTYPE in
+	apt-rpm)
+		docmd epm update
+		info "Have no idea how to upgrade $DISTRNAME"
 		;;
 	*-dpkg)
 		sudocmd do-release-upgrade -d
@@ -85,5 +121,4 @@ epm_release_upgrade()
 		;;
 	esac
 
-	sudocmd $CMD $pkg_filenames
 }