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.
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15 * GNU General Public License for more details.
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22 * For details, see the HELM World-Wide-Web page,
23 * http://cs.unibo.it/helm/.
26 (******************************************************************************)
30 (* A tactic to print Coq objects in XML *)
32 (* Claudio Sacerdoti Coen <sacerdot@cs.unibo.it> *)
35 (* This module defines a pretty-printer and the stream of commands to the pp *)
37 (******************************************************************************)
40 (* the type token for XML cdata, empty elements and not-empty elements *)
43 (* Empty (element_name, [attrname1, value1 ; ... ; attrnamen, valuen] *)
44 (* NEmpty (element_name, [attrname1, value2 ; ... ; attrnamen, valuen], *)
46 type token = Str of string
47 | Empty of string * (string * string) list
48 | NEmpty of string * (string * string) list * token Stream.t
51 (* currified versions of the constructors make the code more readable *)
52 let xml_empty name attrs = [< 'Empty(name,attrs) >]
53 let xml_nempty name attrs content = [< 'NEmpty(name,attrs,content) >]
54 let xml_cdata str = [< 'Str str >]
56 (** low level for other PPs: pretty print each token of strm applying 'f' to a
57 canonical string representation of each token *)
65 | [< 'Empty(n,l) ; s >] ->
68 List.iter (fun (n,v) -> f (" " ^ n ^ "=\"" ^ v ^ "\"")) l;
71 | [< 'NEmpty(n,l,c) ; s >] ->
74 List.iter (fun (n,v) -> f (" " ^ n ^ "=\"" ^ v ^ "\"")) l;
78 f ("</" ^ n ^ ">\n") ;
82 for i = 1 to m do f " " done
87 (** pretty printer on output channels *)
88 let pp_to_outchan strm oc =
89 pp_gen (fun s -> output_string oc s) strm;
93 (** pretty printer to string *)
94 let pp_to_string strm =
95 let buf = Buffer.create 10240 in
96 pp_gen (Buffer.add_string buf) strm;
100 (** pretty printer to file *)
102 (* pp tokens None pretty prints the output on stdout *)
103 (* pp tokens (Some filename) pretty prints the output on the file filename *)
104 let pp ?(quiet=false) strm fn =
107 let outchan = open_out filename in
109 pp_to_outchan strm outchan;
116 print_string ("\nWriting on file \"" ^ filename ^
117 "\" was succesfull\n");
120 | None -> pp_to_outchan strm stdout