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Relating HTML code and Prolog Terms

• HTML is structured: it is possible to reflect this structure as Prolog terms.
• Allows viewing any WWW page as a Herbrand term and manipulating it easily.
• Ideally, provide bidirectional conversion between a string representing the HTML code and its term representation (e.g., with DCGs).
• E.g, predicates for this purpose provided in PiLLoW:
  • output_html(F) - sends to the standard output the text corresponding to the HTML term F.
  • html2terms(ASCII,Terms) - Relates a list of HTML terms and a list of ASCII characters (reversible).
• Example:

  #!/usr/local/bin/lpshell
  :- use_module('/usr/local/src/pillow/html.pl').
  main(_) :- 
      T = [ cgi_reply,
            html( [ 'Hello', 
                     b(world)  
                  ] ) 
          ]),
      output_html(T).