#!/bin/sh

# FullPath subroutine, version 1.0, POSIX shell compliant.

# Copyright © 2019 Ioannis Vranos

# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <https://www.gnu.org/licenses/>.



# Displays the full path, of the file or directory argument.

FullPath()
{

 fdName="$1"


 dirName="$(dirname "$fdName")"

 fdName="$(basename "$fdName")"


 #shellcheck disable=SC2164
 cd "$dirName" 2>/dev/null


 rc=$?

 if [ "$rc" -ne 0 ]
 then

  echo
  echo "Error: Can not access $1"
  echo
  echo "Exiting..."

  exit 1

 fi



 if [ -d "$fdName" ]
 then


  #shellcheck disable=SC2164
  cd "$fdName" 2>/dev/null


  rc=$?

  if [ "$rc" -ne 0 ]
  then

    echo
    echo "Error: Can not access $1"
    echo
    echo "Exiting..."

    exit 1  

  fi


  fullPath="$(pwd)"


  else

  fullPath="$(pwd)"

  fullPath="$fullPath/$fdName"


 fi


 echo "$fullPath"

 return 0
}

fullScriptPath="$(FullPath "$0")"

echo "$fullScriptPath"