.create_all_patches.sh

#!/bin/bash

#This is to be executed at the root folder of dumux-course, no input arguments required. The script creates patches for all exercises stored in the exercise/ folder and with a name starting with exercise-*

exerciseFolder=exercises/

# Iterate over all subdirectories
for exercise in $(find $exerciseFolder -maxdepth 1 -type d -name "exercise-*")
do
  #crop path to get exercise name
  exerciseName=${exercise%/} # this removes the trailing slash of the path - % removes smallest suffix matching the given pattern
  exerciseName=${exercise#exercises/} # this remove the leading exercises/ of the path - # removes the smallest prefix matching the given pattern

  #check if the exercise-folder exists. Should always exist, as we iterate over them
  if [ ! -d exercises/$exerciseName ]
  then
    echo
    echo "exercises/$exerciseName does NOT exist. Terminating."
    exit 1
  fi

  echo "Generating diff for $exerciseName. Storing the patch file into patches/$exerciseName/$exerciseName.patch"
    diff -ruN $exercise exercises/solution/$exerciseName > .patches/$exerciseName/$exerciseName.patch

done