find_code_block_identifier.rb

def enumerate_recursive_dir(path)
  Dir::foreach(path) {|f|
    next if f == '.' or  f == '..'
    if path =~ /\/$/
      f = path + f
    else
      f = path + '/' + f
    end
    if FileTest::directory?(f)
      enumerate_recursive_dir(f) {|nested_file|
        yield nested_file
      }
    else
      yield f
    end
  }
end

def find_identifier(md_path, data, id)
  line_no = 1
  in_code_block = false
  is_found_id_in_code_block = []
  qualify_list = []
  exit_block_line_no = 0
  in_qualify_list = false

  data.lines {|line_with_return|
    line = line_with_return.chomp
    if line.include?('```cpp')
      in_code_block = true
      is_found_id_in_code_block = false
    elsif line == '```'
      if in_code_block
        in_code_block = false
        exit_block_line_no = line_no
        qualify_list = []
      end
    else
      if in_code_block and line.include?(id)
        is_found_id_in_code_block = true
      end

      if line_no == exit_block_line_no + 1 and line[0] == '*'
        in_qualify_list = true
      elsif (in_qualify_list and line.empty?) or (line_no == exit_block_line_no + 1 and line.empty?)
        in_qualify_list = false
        if is_found_id_in_code_block and qualify_list.index {|x| x.include?(id)} == nil
          puts "#{md_path}:#{line_no} found identifier #{id}"
        end
      end

      if in_qualify_list
        qualify_list << line
      end
    end
    line_no = line_no + 1
  }
end

enumerate_recursive_dir('site') {|md_path|
  if File.extname(md_path) != ".md"
    next
  end

  data = File.open(md_path).read
  find_identifier(md_path, data, 'std::vector')
}