How to parse html table to txt?

Question

HTML

Hello.
Essence in what: It is
necessary to make from the table of type

<table>
    <tr>
      <td></td>
      <td></td>
    </tr>
    <tr>
     <td></td>
     <td></td>
    </tr>
  </table>

txt file with the following content:

-------------|----------------
1            | 2             *
-------------|----------------
3            | 4             *
-------------|----------------

Tell me how it is better to implement this, in fact, it is possible in any language - I would like to understand the logic. Thank you.