comparison cpack/dml/lib/queries.pl @ 0:718306e29690 tip

commiting public release
author Daniel Wolff
date Tue, 09 Feb 2016 21:05:06 +0100
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-1:000000000000 0:718306e29690
1 /* Part of DML (Digital Music Laboratory)
2 Copyright 2014-2015 Samer Abdallah, University of London
3
4 This program is free software; you can redistribute it and/or
5 modify it under the terms of the GNU General Public License
6 as published by the Free Software Foundation; either version 2
7 of the License, or (at your option) any later version.
8
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
13
14 You should have received a copy of the GNU General Public
15 License along with this library; if not, write to the Free Software
16 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17 */
18
19 :- module(queries,
20 [ with_output_to_pengine/1
21 , write_html/1
22 ]).
23
24 :- use_module(library(pengines)).
25 :- use_module(library(http/html_write)).
26 :- use_module(library(apply_macros)).
27 :- use_module(library(dcg_core)).
28
29 sandbox:safe_primitive(html_write:print_html(_)).
30 sandbox:safe_primitive(flush_output).
31 sandbox:safe_meta(html_write:html(_,_,_),[]).
32
33 :- meta_predicate
34 with_output_to_pengine(0),
35 write_html(:).
36
37 with_output_to_pengine(Goal) :-
38 with_output_to(atom(Reply), in_pre(Goal)),
39 % catch( Goal, Ex,
40 % in_pre((message_to_string(Ex,S),format(S))))),
41 (Reply='' -> true; pengine_output(Reply)).
42
43 write_html(P) :-
44 html(P,Toks,[]),
45 print_html(Toks),
46 flush_output.
47