source-root.sh

#!/bin/bash

# This bash script is part of the MEGAlib & COSItools setup procedure.
# As such it is dual licenced under Apache 2.0 for COSItools and LGPL 3.0 for MEGAlib
#
# Development lead: Andreas Zoglauer
#
# Description:
# Source all ROOT-related environment variables



# Make this script work with zsh
if [ -n "$ZSH_VERSION" ]; then emulate -L ksh; fi


# Print some help 
confhelp() {
  echo ""
  echo "This script sources all ROOT-related environment variables"
  echo " "
  echo "Usage: ./source-root.sh --path=[full path to the ROOT installation]";
  echo " "
}


# Parse the command line
CMD=( "$@" )

__TMP_PATH=""
__TMP_HERE=$(pwd)

for C in "${CMD[@]}"; do
  if [[ ${C} == *-p*=* ]]; then
    __TMP_PATH=`echo ${C} | awk -F"=" '{ print $2 }'`
  elif [[ ${C} == *-h ]] || [[ ${C} == *-hel* ]]; then
    echo ""
    confhelp
    exit 0
  fi
done


# Perform sanity checks

# We require an absolute path
if [[ ${__TMP_PATH} != /* ]]; then
  echo ""
  echo "ERROR: The ROOT path must be an absolute path: ${__TMP_PATH}"
  echo ""
  return
fi

# The directory must exist
if [[ ! -d ${__TMP_PATH} ]]; then
  echo ""
  echo "ERROR: ROOT directory not found: ${__TMP_PATH}"
  echo ""
  return
fi

# Check if the ROOT setup script exists"
if [[ ! -f ${__TMP_PATH}/bin/thisroot.sh ]]; then
  echo ""
  echo "ERROR: Root environment script not found: ${__TMP_PATH}/bin/thisroot.sh"
  echo ""
  return
fi


# Finally source the ROOT setup:
source ${__TMP_PATH}/bin/thisroot.sh


return