Grep terraform files and print full resources

tfgrep.sh

#!/bin/bash

if [ $# -eq 0  ]; then
  echo "No arguments. Use: $(basename "$0") <regex> [<files|dirs]"
  exit 1
fi

REGEX="${1/\\/\\\\}"
shift

if [ -t 0 ] && [ -z "$*" ]; then # No stdin pipe, no arguments
  FILES="$(find . -name "*.tf" -type f ! -regex ".*/\..*")"
elif [ -t 0 ] && [ -n "$*" ]; then # No stdin pipe, arguments
  for arg in "${@}"; do
    if [ -f "${arg}" ]; then
      FILES=("${FILES[@]}" "${arg}")
    elif [ -d "${arg}" ]; then
      FILES=("${FILES[@]}" "$(find "${arg}" -name "*.tf" -type f ! -regex ".*/\..*")")
    else
      echo "${arg} ignored as it is nor a directory neihter a file"
    fi
  done
  if [ ${#FILES[@]} -eq 0 ]; then
    exit 1
  fi
fi

awk -v regex="(${REGEX})" '
BEGIN {
  r[0]=""
  BOLD=""
  GREEN=""
  BLACK=""
}
{
  if (length(r)== 0) {
    if($1 ~ "^[a-z]") {
      m=0
      $0=gensub(/^(.*)/, BOLD"\\1"BLACK, "g")
      if ($0 ~ regex) {
        $0=gensub(regex, GREEN"\\1"BLACK""BOLD, "g")
        m=1
      }
      i=0
      r[i]=$0
    }
  } else {
    i++
    if ($0 ~ /^}/) {
      if (m==1) {
        if (FILENAME != "-") {
          print "== "FILENAME" =="
        }
        for (l=0;l<=i;l++) {
          print r[l]
        }
        print $0
        print ""
      }
      delete r
    } else {
      if ($0 ~ regex) {
        $0=gensub(regex, GREEN"\\1"BLACK, "g")
        m=1
      }
      r[i]=$0
    }
  }
}
' ${FILES[@]}