#!/bin/sh
#
# RM_EMPTY_BRANCH.sh
#
# When cleartool uncheckout, rmbranch or rmver are performed 
# remove the parent branch if the parent branch has no 
# checkouts, sub-branches or labeled versions associated 
# with it IFF (IF AND ONLY IF) the uncheckout file is 
# the 0th element or removing the branch causes the parent 
# branch to also be "empty".
#
# NOTE: Also submitted as ftp.atria.com/contrib/T0031
#
# Author: Charles W. Clarke III (ABS)
# email:  charles@abs-consulting.com
# URL:    http://www.abs-consulting.com
# Date:   Sep. 17, 1996
############################################################
# History: 09/17/96 : Created for A Better Solution, Inc.
############################################################

if [ $CLEARCASE_OP_KIND = "uncheckout" ]
then
      case $CLEARCASE_ID_STR in

           */0)   :
                  ;;

           *)     exit 0
                  ;;
      esac
fi

BRANCH_DIR="`dirname $CLEARCASE_XPN`"

if [ `ls $BRANCH_DIR | wc -w` -ne 2 ]
then
   ########################################################
   # There are either checked-out versions of the file or #
   # other branches created off of this branch or labeled #
   # versions.                                            #
   ########################################################
   exit 0
else

   #####################
   # Remove the branch #
   #####################
   case $BRANCH_DIR in

        */main) ########################################
                # Don't attempt to delete /main branch #
                ########################################
                exit 0
                ;;

        *)     ##################################
               # Delete the empty parent branch #
               ##################################
               cleartool rmbranch -force \
                  -c "Automatic removal of empty branch via trigger..." \
                  $BRANCH_DIR
               exit 0
               ;;
   esac

fi