Calculated the detail of transkrip nilai from Simaster

recap_nilai.sh

#!/bin/bash

################################################################################
# recap_nilai.sh
# Description: Show detail of Transkrip Nilai download from Simaster
# Requirements: poppler-utils package
#
# 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 <http://www.gnu.org/licenses/>.
################################################################################

declare -A dict_nilai
dict_nilai["A"]=4
dict_nilai["B"]=3
dict_nilai["C"]=2
dict_nilai["D"]=1
dict_nilai["E"]=0

function translate_nilai() {
  base=${1::1}
  addi=${1:1:1}

  if [ -z $addi ]; then
    echo ${dict_nilai["$base"]}
    return
  fi

  operator="$addi"
  value="0.25"

  if [ $addi = "/" ]; then
    operator="-"
    value="0.5"
  fi

  echo "${dict_nilai["$base"]} $operator $value" | bc
}

if [ $# -ne 1 ]; then
  echo "Usage: $0 [Transkrip Nilai]"
  exit 1
fi

filename="$1"
total_sks=0
total_nilai=0

declare -A obj_resume

if ! [ -f "$filename" ]; then
  echo "File Not exist"
  exit 1
fi

for line in $(pdftotext -layout "$filename" -); do
  if [[ $line = "=" ]]; then
    break
  elif [[ $line =~ [1-9]\.00 ]]; then
    current_sks=$line
  elif [[ $line =~ ^[A-E](\/[B-E]|[+-])?$ ]]; then
    [ -v obj_resume["$line"] ] || obj_resume["$line"]=0
    obj_resume["$line"]=$(echo "${obj_resume["$line"]} + $current_sks" | bc)
    total_sks=$(echo "$total_sks + $current_sks" | bc)
  fi
done

echo "RINCIAN SKS"
echo "================="

for key in "${!obj_resume[@]}"; do
  echo "Total Nilai $key: ${obj_resume["$key"]} SKS"
  total_nilai=$(echo "$total_nilai + `translate_nilai "$key"` * ${obj_resume["$key"]}" | bc)
done
ip=$(echo "scale=2; $total_nilai / $total_sks" | bc)

echo "================="
echo "Total SKS: $total_sks"
echo "Calculated IP: $ip"