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_lvar s = sep "%" ^ sym s
107 let out_tref r = pat (str_tref r)
110 let rec out_sequence f = function
113 | s :: tail -> f s ^ sep "," ^ out_sequence f tail
115 let out_order = function
116 | MQAsc -> sub2 "asc"
117 | MQDesc -> sub2 "desc"
119 let out_func = function
120 | MQName -> key "name"
121 | MQTheory -> key "theory"
122 | MQTitle -> key "title"
123 | MQContributor -> key "contributor"
124 | MQCreator -> key "creator"
125 | MQPublisher -> key "publisher"
126 | MQSubject -> key "subject"
127 | MQDescription -> key "description"
128 | MQDate -> key "date"
129 | MQType -> key "type"
130 | MQFormat -> key "format"
131 | MQIdentifier -> key "identifier"
132 | MQLanguage -> key "language"
133 | MQRelation -> key "relation"
134 | MQSource -> key "source"
135 | MQCoverage -> key "coverage"
136 | MQRights -> key "rights"
137 | MQInstitution -> key "institution"
138 | MQContact -> key "contact"
139 | MQFirstVersion -> key "firstversion"
140 | MQModified -> key "modified"
142 let out_str = function
144 | MQStringRVar s -> out_rvar s
145 | MQStringSVar s -> out_svar s
146 | MQFunc (f, r) -> out_func f ^ out_rvar r
147 | MQMConclusion -> key "mainconclusion"
148 | MQConclusion -> key "inconclusion"
150 let rec out_bool = function
151 | MQTrue -> key "true"
152 | MQFalse -> key "false"
153 | MQIs (s, t) -> out_str s ^ sub "is" ^ out_str t
154 | MQNot b -> key "not" ^ out_bool b
155 | MQAnd (b1, b2) -> sep "(" ^ out_bool b1 ^ sub "and" ^ out_bool b2 ^ sep ")"
156 | MQOr (b1, b2) -> sep "(" ^ out_bool b1 ^ sub "or" ^ out_bool b2 ^ sep ")"
157 | MQSubset (l1, l2) -> sep "(" ^ out_list l1 ^ sub "subset" ^ out_list l2 ^ sep ")"
158 | MQSetEqual (l1, l2) -> sep "(" ^ out_list l1 ^ sub "setequal" ^ out_list l2 ^ sep ")"
160 and out_list = function
161 | MQSelect (r, l, b) ->
162 key "select" ^ out_rvar r ^ sub "in" ^ out_list l ^ sub "where" ^ out_bool b
163 | MQUse (l, v) -> key "use" ^ out_list l ^ sub "position" ^ out_svar v
164 | MQUsedBy (l, v) -> key "usedby" ^ out_list l ^ sub "position" ^ out_svar v
165 | MQPattern p -> key "pattern" ^ out_sequence out_tref p
166 | MQUnion (l1, l2) -> sep "(" ^ out_list l1 ^ sub "union" ^ out_list l2 ^ sep ")"
167 | MQIntersect (l1, l2) -> sep "(" ^ out_list l1 ^ sub "intersect" ^ out_list l2 ^ sep ")"
168 | MQDiff (l1, l2) -> sep "(" ^ out_list l1 ^ sub "diff" ^ out_list l2 ^ sep ")"
169 | MQListRVar v -> out_rvar v
170 | MQSortedBy (l, o, f) -> sep "(" ^ out_list l ^ sub "sortedby" ^ out_func f ^ out_order o ^ sep ")"
171 | MQListLVar v -> out_lvar v
172 | MQLetIn (v, l1, l2) -> key "let" ^ out_lvar v ^ sub "be" ^ out_list l1 ^ sub "in" ^ out_list l2
173 | MQReference s -> key "reference" ^ out_sequence str s
174 | MQMinimize l -> key "minimize" ^ out_list l
176 let out_query = function
177 | MQList l -> out_list l
179 (* HTML representation of a query result *)
181 let rec out_res_list = function
183 | u :: l -> res u ^ nl () ^ out_res_list l
186 par () ^ "Result:" ^ nl () ^
188 | MQRefs l -> out_res_list l
190 (* Converting functions *)
193 let s = str_uref u in
194 MQueryTParser.ref MQueryTLexer.rtoken (Lexing.from_string s)
197 let lexbuf = Lexing.from_channel ch in
198 MQueryTParser.query MQueryTLexer.qtoken lexbuf
200 (* implementazione manuale di tref_uref da controllare
204 let i = Str.search_forward (Str.regexp_string ":/") s 0 in
205 let p = Str.string_before s i in
206 let q = Str.string_after s (i + 2) in
211 let encode = function
212 | Str.Text s -> MQBC s
214 if s = "?" then MQBQ else
215 if s = "*" then MQBS else
216 if s = "**" then MQBSS else
217 if s = "/" then MQBD else MQBC s
219 let tref_uref (u, i) =
220 let s = UriManager.string_of_uri u in
223 let rx = Str.regexp "\?\|\*\*\|\*\|/" in
224 let l = Str.full_split rx q in
225 (Some p, List.map encode l, i)