archive_site: add -f for force, skip tarball if site dir does not exists, use zpaq

web/archive_site.sh

 #!/bin/sh
 # remove site to archive:
 # $ archive_site.sh /path/to/site
+
+if [ "$1" = "-f" ] ; then
+    shift
+    FORCE=1
+fi
+
 test "$1" || exit 1
 
 SITEPATH="$(realpath $1)"
@@ -14,13 +20,18 @@ IPHOST=91.232.225.9
 
 if [ -n "$IP" ] && [ "$IP" = "$IPHOST" ] ; then
     echo "$DOMAINNAME still on $IPHOST IP ($IP really)"
-    exit
+    [ -n "$FORCE" ] || exit
 fi
 
 test -n "$USERNAME" || exit
 test -d "/home/$USERNAME" || exit
 test -n "$DOMAINNAME" || exit
 
+try_rm_user()
+{
+    rmdir "/home/$USERNAME/www" && rm -vrf /home/$USERNAME/ && userdel $USERNAME
+}
+
 cd $(dirname $0) || exit
 
 . ./config
@@ -40,11 +51,11 @@ echo "$conffile"
 mkdir -p /home/archive
 mv $conffile /home/archive/$conffile
 
-cd "$SITEPATH" || exit
-erc a /home/archive/$DOMAINNAME.tar.xz . || exit
+cd "$SITEPATH" || { try_rm_user ; exit ; }
+erc add /home/archive/$DOMAINNAME.zpaq . || exit
 rm -vrf "$SITEPATH"
 
-rmdir "/home/$USERNAME/www" && rm -vrf /home/$USERNAME/ && userdel $USERNAME
+try_rm_user
 
 cd /
 serv httpd2 reload