dev_server.py 文件源码

def render_diff(old_text, new_text):
  print (old_text, old_text.__class__)
  print (new_text, new_text.__class__)
  sm = difflib.SequenceMatcher(a=old_text, b=new_text)
  out_toks = []
  for opcode, s1, e1, s2, e2 in sm.get_opcodes():
    if opcode == 'equal':
      out_toks.append(old_text[s1:e1])
    elif opcode == 'insert':
      out_toks.append('<span class="insert">' + new_text[s2:e2] + '</span>')
    elif opcode == 'delete':
      out_toks.append('<span class="delete">' + old_text[s1:e1] + '</span>')
    elif opcode == 'replace':
      out_toks.append('<span class="delete">' + old_text[s1:e1] + '</span>')
      out_toks.append('<span class="insert">' + new_text[s2:e2] + '</span>')
  return ''.join(out_toks)