pre-commit.bash

#!/bin/bash

# This file should be installed in .git/hooks/pre-commit

EXITCODE=0

format_file() {
  clang-format -style=file ${1} | diff ${1} - > /dev/null
  if [ $? -ne 0 ]
  then
      echo "clang-format mismatch in ${1}"
      clang-format -i -style=file ${1}
      EXITCODE=1
  fi
}

case "${1}" in
  --about )
    echo "Runs clang-format on source files"
    ;;
  * )
    for file in `git diff-index --cached --diff-filter=ACMRTUXB --name-only HEAD | egrep "(\.c$|\.h$|\.cpp$|\.inl$|\.m$|\.mm$)"` ; do
      format_file "${file}"
    done
    ;;
esac

exit $EXITCODE