new_contents: #coding=utf-8
  import json
  FILE_PATH = '/file-path'
  FILE_NAME = 'file-name'
  
  def main():
      fp = open(FILE_PATH + FILE_NAME + '.txt', 'r')
      out = {}
      line = fp.readline()
      out['law'] = line
      out['letters'] = []
      count = 0
      
      while True:
          line = fp.readline()
          if not line:
              break
          elif line == "\n":
              count += 1
              if count == 2:
                  line = fp.readline()
                  if '無' in line or '款' in line:
                      if '無' in line:
                          entry = ""
                      else:
                          entry = line
                      out['letters'].append({'entries':entry, 'contents':[]})
                  else:
                      out['letters'][-1]['contents'].append({'title': line, 'subcontent':[]})
                      
                  count = 0
          else:
              # to do
              # add order and class for the subcontent object
              out['letters'][-1]['contents'][-1]['subcontent'].append(line)
  
      with open(FILE_PATH + FILE_NAME + '.json', 'w') as outfile:
          json.dump(out, outfile, ensure_ascii=False)
  
  main()
subject: Add the prototype of the parser of letters