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 (* Ferruccio Guidi <fguidi@cs.unibo.it> *)
34 (******************************************************************************)
38 (* string linearization of a reference *)
40 let str_btoken = function
47 let str_ftoken = function
48 | MQFC i -> "/" ^ string_of_int i
52 let str_prot = function
56 let rec str_body = function
58 | head :: tail -> str_btoken head ^ str_body tail
61 let rec str_fi start = function
64 (if start then "#1" else "") ^ str_ftoken t ^ str_fi false l
67 let str_tref (p, b, i) =
68 str_prot p ^ ":/" ^ str_body b ^ str_frag i
71 let rec str_fi start = function
74 (if start then "#1" else "") ^ string_of_int i ^ str_fi false l
75 in UriManager.string_of_uri u ^ str_fi true i
77 (* raw HTML representation *)
79 let key s = "<font color=\"blue\">" ^ s ^ " </font>"
81 let sub s = "<font color=\"blue\"> " ^ s ^ " </font>"
83 let sub2 s = "<font color=\"blue\">" ^ s ^ "</font>"
89 let str s = "<font color=\"red\">'" ^ s ^ "'</font>"
91 let pat s = "<font color=\"red\">\"" ^ s ^ "\"</font>"
93 let res s = "<font color=\"brown\">\"" ^ s ^ "\"</font>"
99 (* HTML representation of a query *)
101 let out_rvar s = sym s
103 let out_svar s = sep "$" ^ sym s
105 let out_tref r = pat (str_tref r)
107 let out_pat p = out_tref p
109 let out_order = function
110 | MQAsc -> sub2 "asc"
111 | MQDesc -> sub2 "desc"
113 let out_func = function
114 | MQName -> key "name"
115 | MQTheory -> key "theory"
116 | MQTitle -> key "title"
117 | MQContributor -> key "contributor"
118 | MQCreator -> key "creator"
119 | MQPublisher -> key "publisher"
120 | MQSubject -> key "subject"
121 | MQDescription -> key "description"
122 | MQDate -> key "date"
123 | MQType -> key "type"
124 | MQFormat -> key "format"
125 | MQIdentifier -> key "identifier"
126 | MQLanguage -> key "language"
127 | MQRelation -> key "relation"
128 | MQSource -> key "source"
129 | MQCoverage -> key "coverage"
130 | MQRights -> key "rights"
131 | MQInstitution -> key "institution"
132 | MQContact -> key "contact"
133 | MQFirstVersion -> key "firstversion"
134 | MQModified -> key "modified"
136 let out_str = function
138 | MQSRVar s -> out_rvar s
139 | MQSSVar s -> out_svar s
140 | MQFunc (f, r) -> out_func f ^ out_rvar r
141 | MQMConclusion -> key "mainconclusion"
142 | MQConclusion -> key "inconclusion"
144 let rec out_bool = function
145 | MQTrue -> key "true"
146 | MQFalse -> key "false"
147 | MQIs (s, t) -> out_str s ^ sub "is" ^ out_str t
148 | MQNot b -> key "not" ^ out_bool b
149 | MQAnd (b1, b2) -> sep "(" ^ out_bool b1 ^ sub "and" ^ out_bool b2 ^ sep ")"
150 | MQOr (b1, b2) -> sep "(" ^ out_bool b1 ^ sub "or" ^ out_bool b2 ^ sep ")"
151 | MQSubset (l1, l2) -> sep "(" ^ out_list l1 ^ sub "subset" ^ out_list l2 ^ sep ")"
152 | MQSetEqual (l1, l2) -> sep "(" ^ out_list l1 ^ sub "setequal" ^ out_list l2 ^ sep ")"
154 and out_list = function
155 | MQSelect (r, l, b) ->
156 key "select" ^ out_rvar r ^ sub "in" ^ out_list l ^ sub "where" ^ out_bool b
157 | MQUse (l, v) -> key "use" ^ out_list l ^ sub "position" ^ out_svar v
158 | MQUsedBy (l, v) -> key "usedby" ^ out_list l ^ sub "position" ^ out_svar v
159 | MQPattern p -> key "pattern" ^ out_pat p
160 | MQUnion (l1, l2) -> sep "(" ^ out_list l1 ^ sub "union" ^ out_list l2 ^ sep ")"
161 | MQIntersect (l1, l2) -> sep "(" ^ out_list l1 ^ sub "intersect" ^ out_list l2 ^ sep ")"
162 | MQDiff (l1, l2) -> sep "(" ^ out_list l1 ^ sub "diff" ^ out_list l2 ^ sep ")"
163 | MQLRVar s -> out_rvar s
164 | MQSortedBy (l, o, f) -> sep "(" ^ out_list l ^ sub "sortedby" ^ out_func f ^ out_order o ^ sep ")"
166 let out_query = function
167 | MQList l -> out_list l
169 (* HTML representation of a query result *)
171 let rec out_list = function
173 | u :: l -> res u ^ nl () ^ out_list l
176 par () ^ "Result:" ^ nl () ^
178 | MQRefs l -> out_list l
180 (* Converting functions *)
183 let s = str_uref u in
184 MQueryTParser.ref MQueryTLexer.rtoken (Lexing.from_string s)
187 let lexbuf = Lexing.from_channel ch in
188 MQueryTParser.query MQueryTLexer.qtoken lexbuf