Run clang-tidy given directories and regex pattern.

run-clang-tidy.sh

#!/bin/bash

usage() {
  # additional error messages
  if [ "$#" -ne 0 ]; then
    printf "$@\n" >&2;
  fi

  printf "Usage: $0 [ -e REGEX_PATTERN ] DIRECTORY [DIRECTORIES...]\n" >&2;
}

if [ "${#@}" -eq 0 ]; then
  usage
  exit 1;
fi

DIRECTORIES=""

# default regex pattern
REGEX_PATTERN='.*\.(h|hpp|hxx|c|cc|cpp|cxx)$'

while [ "$#" -gt 0 ]; do
  key="$1"

  case "$key" in
    -h|--help)
      usage
      exit 0
      ;;
    -e)
      REGEX_PATTERN="$2"
      shift
      shift
      ;;
    *)
      DIRECTORIES+="$1 "
      shift
      ;;
  esac
done

if [ -z "$DIRECTORIES" ]; then
  usage "No directories are provided."
  exit 1;
fi

CLANG_TIDY_FILES=$(
  find $DIRECTORIES -type f -regextype posix-extended -regex "$REGEX_PATTERN"
)

for file in ${CLANG_TIDY_FILES}; do
  clang-tidy "$file"
done