HTML markup elements.
(* Title: Pure/Thy/HTML.ML
ID: $Id$
Author: Markus Wenzel, TU Muenchen
HTML markup elements.
*)
signature HTML =
sig
val output: string -> string
val output_width: string -> string * real
type text (* = string *)
val plain: string -> text
val name: string -> text
val keyword: string -> text
val file_name: string -> text
val file_path: Path.T -> text
val para: text -> text
val href_name: string -> text -> text
val href_path: Path.T -> text -> text
val preform: text -> text
val verbatim: string -> text
val begin_document: string -> text
val end_document: text
val insert_here: text
val source: (string, 'a) Source.source -> text
val begin_theory: Path.T * string -> string -> string list -> ((Path.T * Path.T) * bool) list
-> text -> text
val end_theory: text
val ml_file: Path.T -> string -> text
val conclude_theory: text
val theorem: string -> thm -> text
val section: string -> text
val setup: (theory -> theory) list
end;
structure HTML: HTML =
struct
(** HTML print modes **)
(* mode *)
val htmlN = "HTML";
fun html_mode f x = setmp print_mode [htmlN] f x;
(* symbol output *)
val escape = fn "<" => "<" | ">" => ">" | "&" => "&" | c => c;
val output_chars = implode o map escape;
fun output s =
if not (exists_string (equal "<" orf equal ">" orf equal "&") s) then s
else implode (map escape (explode s)); (*sic!*)
fun output_width s = (output s, real (size s));
val _ = Symbol.add_mode htmlN output_width;
(* token translations *)
fun tagit bg en = apfst (enclose bg en) o output_width;
fun color col = tagit ("<font color=" ^ quote col ^ ">") "</font>";
val html_trans =
[("class", color "red"),
("tfree", color "purple"),
("tvar", color "purple"),
("free", color "blue"),
("bound", color "green"),
("var", color "blue"),
("xnum", color "yellow"),
("xstr", color "brown")];
(** HTML markup **)
type text = string;
(* atoms *)
val plain = output;
fun name s = "<i>" ^ output s ^ "</i>";
fun keyword s = "<b>" ^ output s ^ "</b>";
fun file_name s = "<tt>" ^ output s ^ "</tt>";
val file_path = file_name o Path.pack;
(* misc *)
fun para txt = "\n<p>\n" ^ txt ^ "\n</p>\n";
fun href_name s txt = "<a href=" ^ quote s ^ ">" ^ txt ^ "</a>";
fun href_path path txt = href_name (Path.pack path) txt;
fun preform txt = "<pre>" ^ txt ^ "</pre>";
val verbatim = preform o output;
(* document *)
fun begin_document title =
let val txt = plain title in
"<html>\n\
\<head>\n\
\<title>" ^ txt ^ "</title>\n\
\</head>\n\
\\n\
\<body>\n\
\<h1>" ^ txt ^ "</h1>\n"
end;
val end_document =
"</body>\n\
\</html>\n";
val insert_here = "<!--insert--here-->";
(* theory *)
fun source src =
"\n<hr>\n<pre>" ^ output_chars (Source.exhaust src) ^ "</pre>\n<hr>\n";
local
fun file ((p, p'), loadit) =
href_path p' ((if not loadit then enclose "(" ")" else I) (file_path p));
fun suffix_last _ [] = []
| suffix_last s lst = let val (xs, x) = split_last lst in xs @ [x ^ s] end;
val plus_names = space_implode " + " o map name;
fun theory (back_path, back_name) A =
begin_document ("Theory " ^ A) ^ "\n" ^
href_path back_path "Back" ^ " to the index of " ^ plain back_name ^ "\n<p>\n" ^
keyword "theory" ^ " " ^ name A ^ " = ";
in
fun begin_theory back A Bs [] body = theory back A ^ plus_names (suffix_last ":" Bs) ^ "\n" ^ body
| begin_theory back A Bs Ps body =
theory back A ^ plus_names Bs ^
"<br>" ^ keyword "files" ^ " " ^ space_implode " + " (map file Ps) ^ ":" ^ "\n" ^ body;
end;
val end_theory = "";
val conclude_theory = end_document;
(* ML file *)
fun ml_file path str =
begin_document ("File " ^ Path.pack path) ^
"\n<hr>\n" ^ verbatim str ^ "\n<hr>\n" ^ end_document;
(* theorem *)
(* FIXME improve freeze_thaw (?) *)
val string_of_thm =
Pretty.setmp_margin 80 Pretty.string_of o
Display.pretty_thm_no_quote o #1 o Drule.freeze_thaw;
fun thm th = preform (prefix_lines " " (html_mode string_of_thm th));
fun theorem a th = para (keyword "theorem" ^ " " ^ name (a ^ ":") ^ "\n" ^ thm th);
(* section *)
fun section heading = "\n\n<h2>" ^ plain heading ^ "</h2>\n";
(** theory setup **)
val setup =
[Theory.add_mode_tokentrfuns htmlN html_trans];
end;