1 (* Copyright (C) 2000, HELM Team.
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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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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 >]
57 (* pp tokens None pretty prints the output on stdout *)
58 (* pp tokens (Some filename) pretty prints the output on the file filename *)
59 let pp ?(quiet=false) strm fn =
60 let channel = ref stdout in
65 fprint_string (a ^ "\n") ;
67 | [< 'Empty(n,l) ; s >] ->
69 fprint_string ("<" ^ n) ;
70 List.iter (function (n,v) -> fprint_string (" " ^ n ^ "=\"" ^ v ^ "\"")) l;
71 fprint_string "/>\n" ;
73 | [< 'NEmpty(n,l,c) ; s >] ->
75 fprint_string ("<" ^ n) ;
76 List.iter (function (n,v) -> fprint_string (" " ^ n ^ "=\"" ^ v ^ "\"")) l;
80 fprint_string ("</" ^ n ^ ">\n") ;
84 for i = 1 to m do fprint_string " " done
85 and fprint_string str =
86 output_string !channel str
90 channel := open_out filename ;
95 print_string ("\nWriting on file \"" ^ filename ^
96 "\" was succesfull\n");