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
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13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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15 * GNU General Public License for more details.
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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/.
33 * conversione di un pattern
35 let rec patterneval p =
39 let h = match head with
40 MQString (s) -> Str.global_replace (Str.regexp "\.") "\\\\\." s
46 h ^ (patterneval tail)
50 * conversione di un fragment identifier
56 let s = "#xpointer\\\\(1/" ^ string_of_int (i) in
61 s ^ "/" ^ string_of_int j ^ "\\\\)"
67 * 20/05/2002: non piu' necessario: l'estensione fa eventualmente
68 * parte del pattern precedente
84 * trasforma un pattern MathQL in un pattern postgresql
86 * si utilizzano espressioni regolari POSIX anziche' l'operatore
87 * SQL standard LIKE perche' MathQL prevede esperssioni con "*"
90 let pattern_match preamble pattern fragid =
91 " ~ '" ^ (preeval preamble) ^ ":/" ^ (patterneval pattern) ^ (fieval fragid) ^ "'"