Apply clang-tidy fixes to a codebase and make each fix an individual commit

clang-tidy-git.sh

# This script runs clang-tidy on code to apply its checks for modernisation and readability, applying the fix for each
# check and creating a git commit for it.
# To set up conditions for this file
# 1. Compile your code with the flag -DCMAKE_COMPILE_COMMANDS=ON
# 2. go into the build directory for whatever package you are interested in - it will contain a compile_commands.json file.
# 3. Link compile_commands.json to wherever you have your git repostitory for the code with ln -s
# 4. Run this script in the git repository

# Get the checks we are going to apply to the code, skip the first line which is "enabled checks:" from the clang-tidy output
checks=(`clang-tidy -list-checks -checks="-*,readability*,modernization*" | tail -n +2`)

# Run each check on the code and commit the changes in a separate commit
for check in "${checks[@]}"; do
  echo "Applying check $check"
  # -checks="-*" removes all basic checks so that we only apply this specific check
  run-clang-tidy -clang-apply-replacements-binary /usr/bin/clang-apply-replacements -checks="-*,${check}" -fix -quiet
  echo "Creating commit..."
  git add -u
  git commit -m "Apply clang-tidy check $check"
  echo "Done"
done

echo "Applied all checks and created commits."