1 (* Copyright (C) 2000, HELM Team.
3 * This file is part of HELM, an Hypertextual, Electronic
4 * Library of Mathematics, developed at the Computer Science
5 * Department, University of Bologna, Italy.
7 * HELM is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation; either version 2
10 * of the License, or (at your option) any later version.
12 * HELM is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with HELM; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
22 * For details, see the HELM World-Wide-Web page,
23 * http://cs.unibo.it/helm/.
26 (*************************************************************************)
30 (* Andrea Asperti <asperti@cs.unibo.it> *)
33 (*************************************************************************)
40 | H of attr * ('expr box) list
41 | V of attr * ('expr box) list
42 | Object of attr * 'expr
43 | Action of attr * ('expr box) list
45 and attr = (string option * string * string) list
47 let smallskip = Space([None,"width","0.5em"]);;
48 let skip = Space([None,"width","1em"]);;
50 let indent t = H([],[skip;t]);;
55 let box2xml ~obj2xml box =
59 Text (attr,s) -> X.xml_nempty ~prefix "text" attr (X.xml_cdata s)
60 | Space attr -> X.xml_empty ~prefix "space" attr
61 | Ink attr -> X.xml_empty ~prefix "ink" attr
63 X.xml_nempty ~prefix "h" attr
64 [< (List.fold_right (fun x i -> [< (aux x) ; i >]) l [<>])
67 X.xml_nempty ~prefix "v" attr
68 [< (List.fold_right (fun x i -> [< (aux x) ; i >]) l [<>])
71 X.xml_nempty ~prefix "obj" attr [< obj2xml m >]
73 X.xml_nempty ~prefix "action" attr
74 [< (List.fold_right (fun x i -> [< (aux x) ; i >]) l [<>]) >]
79 let rec map f = function
80 | (Text _) as box -> box
81 | (Space _) as box -> box
82 | (Ink _) as box -> box
83 | H (attr, l) -> H (attr, List.map (map f) l)
84 | V (attr, l) -> V (attr, List.map (map f) l)
85 | Action (attr, l) -> Action (attr, List.map (map f) l)
86 | Object (attr, obj) -> Object (attr, f obj)
90 let document_of_box ~obj2xml pres =
91 [< Xml.xml_cdata "<?xml version=\"1.0\" encoding=\"ISO-8859-1\"?>\n" ;
93 Xml.xml_nempty ~prefix "box"
94 [Some "xmlns","m","http://www.w3.org/1998/Math/MathML" ;
95 Some "xmlns","b","http://helm.cs.unibo.it/2003/BoxML" ;
96 Some "xmlns","helm","http://www.cs.unibo.it/helm" ;
97 Some "xmlns","xlink","http://www.w3.org/1999/xlink"
104 let b_text a b = Text(a,b)
105 let b_object b = Object ([],b)
106 let b_indent = indent
107 let b_space = Space [None, "width", "0.5em"]
108 let b_kw = b_text [None, "color", "red"]