Switch between geometry defaults

Allows knowledgable user to swith between the previous official default geometry configurations,
the current recommended defaults and specific test environments to be investigated for future
releases.

macro/geometry/switch_defaults.sh

+#4f2efee3174a5defe5f16!/bin/bash 
+# Copyright (C) 2021 Facility for AntiProton and Ion Research in Europe, Darmstadt
+# SPDX-License-Identifier: GPL-3.0-only
+# First commited by Eoin Clerkin
+
+echo "programme starts"
+
+if false; then
+if [ -z ${VMWORKDIR} ];
+then
+cat << EOT
+BUILT AND CONFIGURATION CBMROOT ENIVORNMENT NOT DETECTED\n
+HAVE YOU
+. build/config.sh -a
+SCRIPTS REQUIRES A RUNNING SYSTEM.
+EOT
+exit 
+fi
+fi
+
+# TAG FOR THE OFFICIAL APR 2019 CBMROOT SW Release
+APR20_GEOTAG="b085952c8a097bc4b614e5d956285bdf20ef5670"
+APR20_PARATAG="fc62e1c9f2a67109e45389ed93537a7d08973ce2"
+
+# TAG FOR THE OFFICIAL APR 2020 CBMROOT SW Release
+APR21_GEOTAG="875439f929577d678b86bbc243b8f99a094fd31c"
+APR21_PARATAG="fc62e1c9f2a67109e45389ed93537a7d08973ce2"
+
+# TAG FOR NEW EXPERIMENTAL GEOMETRIES. NEXT SOFTWARE RELEASE CANDIDATES
+TEST_GEOTAG="114c7830dc6b8460a8527844aa253ec0c33b414d"
+TEST_PARATAG="21bed5c5e746efdb63b696f4053b9e5f65f940a8"
+
+# GEOMETRY AMD PARAMETER GIT REPOSITORY
+GIT_GEOREPO="https://git.cbm.gsi.de/e.clerkin/cbmroot_geometry.git"
+GIT_PARAREPO="https://git.cbm.gsi.de/e.clerkin/cbmroot_parameter.git"
+
+
+
+
+##########1234567890##########1234567890##########1234567890##########1234567890##########
+cat << EOT
+*******************************************************************************************
+WARNING THIS SCRIPT WILL MODIFY CBMROOT SIMULATION ENVIRNOMENT. PLEASE READ BELOW CAREFULLY
+*******************************************************************************************
+
+This script switches between official and trial versions of the CBMROOT geometries. This 
+is intended for use by a knowledgable user, who will remember to swith back to the official
+geometry relase (currently APR21) once the specific use case has ended. Current options 
+include
+
+APR20 - (previous 2020 default geometries. Run old defaults with the new CBMROOT software.)
+APR21 - (current 2021 default geometries. This is the official release geometries.
+TEST - (Geoemtries shift such that the center of the magnet is the origin of the CBM exp.)
+
+Please choose an option, type exact name [APR20,APR21,TEST] and press return.
+EOT
+read RELEASE
+
+case "${RELEASE}" in
+    APR20)  echo "You specified APR20"; GEOMETRY_TAG=${APR20_GEOTAG}; PARAMETER_TAG=${APR20_PARATAG}  ;;
+    APR21)  echo "You specified APR21"; GEOMETRY_TAG=${APR21_GEOTAG}; PARAMETER_TAG=${APR21_PARATAG} ;;
+    TEST)   echo "You specified TEST "; GEOMETRY_TAG=${TEST_GEOTAG};  PARAMETER_TAG=${TEST_PARATAG} ;;
+    *)      echo "$ANSWER is an unknown option"; exit 1 ;;
+esac
+
+cat << EOT
+Have you read above, and understand that you will need to rerun the script to revert the changes?
+TYPE Yes for confirmation ????
+EOT
+
+read CONFIRMATION
+
+if (echo "${CONFIRMATION}" | sed -n '/^Yes$/!{q10}')
+then
+	echo "Yes typed!"
+	
+
+
+# Geometry Repostiory
+	cd ${VMCWORKDIR}/geometry
+		git checkout ${GEOMETRY_TAG}
+		if [ $? -ne 0 ]; then
+			git fetch ${GIT_GEOREPO} ${GEOMETRY_TAG}
+			git checkout ${GEOMETRY_TAG}
+			if [ $? -ne 0 ]; then
+				echo "[FAIL] TO SWITCH TO SPECIFIED GEOMETRIES:"	
+				exit 101;
+			fi
+		fi
+	
+	cd $OLDPWD
+# Parameter Repository	
+	cd ${VMCWORKDIR}/parameters
+		git checkout ${PARAMETER_TAG}
+		if [ $? -ne 0 ]; then
+			git fetch ${GIT_PARAREPO} ${PARAMETER_TAG}
+			git checkout ${PARAMETER_TAG}
+			if [ $? -ne 0 ]; then
+				echo "[FAIL] TO SWITCH TO SPECIFIED PARAMETERS:"	
+				exit 102;
+			fi
+		fi
+
+	cd $OLDPWD
+else
+  echo "No is assumed!"
+  echo "Positive answer has been restricted to \"Yes\" only, with upper-case Y followed by lower-case e and s, no extra characters permitted. "
+  echo "No changed to geometry and parameter repositoroes made"
+fi
+
+
+cat << EOT
+You may now run the standard CBMROOT macros, e.g.
+
+root -l run_tra_file.C
+root -l run_digi.C
+root -l run_reco.C
+
+and the specified default geometries will be used. To revert these changes, you may re-run this script or rebuild the CBMROOT framework.
+
+EOT
+
+
+echo "Program Ended"