1 (* Copyright (C) 2005, 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 (* $Id: hMysql.ml 5769 2006-01-08 18:00:22Z sacerdot $ *)
29 type result = Mysql.result option
35 if debug then prerr_endline else (fun _ ->())
38 type result = Sqlite3.row list
39 type dbd = Sqlite3.db option
48 | GENERIC_ERROR of string
50 exception Error of string
52 let profiler = HExtlib.profile "Sqlite3"
56 ?(host = Helm_registry.get "matita.basedir")
57 ?(database = "sqlite") ?port ?password ?user ()
59 let username = Helm_registry.get "user.name" in
60 let host_mangled = Pcre.replace ~pat:"[/ .]" ~templ:"_" host in
62 let base = "matita.db." ^ username ^ "." ^ host_mangled ^ "." in
63 let root = "/dev/shm/" in
64 let files = HExtlib.find ~test:(Pcre.pmatch ~pat:(base^"[0-9]+")) root in
65 let rec aux = function
67 debug_print ("HSqlite3: no valid db files found in memory");
68 let name = root ^ base ^ string_of_int (Unix.getpid ()) in
69 debug_print ("HSqlite3: memory db file name: "^name);
72 debug_print ("HSqlite3: found a .db in memory: " ^ x);
73 match Array.to_list (Pcre.extract ~pat:"\\.([0-9]+)$" x) with
74 | [] | _::_::_::_ -> assert false
75 | [_;p] when HExtlib.is_dir ("/proc/" ^ p) ->
76 debug_print ("HSqlite3: found valid db file: " ^ x);
79 HLog.warn ("HSqlite3: dead process db file found: " ^ x);
80 HLog.warn ("HSqlite3: removing: " ^ x);
81 ignore (Sys.command ("rm " ^ x));
86 let db_name = host ^ "/" ^ database in
88 if HExtlib.is_dir "/dev/shm/" && HExtlib.writable_dir "/dev/shm/"
91 let tmp_db_name, first_time = find_db () in
92 let cp_to_ram_cmd = "cp " ^ db_name ^ " " ^ tmp_db_name in
94 if HExtlib.is_regular db_name then ignore (Sys.command cp_to_ram_cmd)
95 else debug_print ("HSqlite3: no initial db: " ^ db_name)
96 else debug_print "HSqlite3: not copying the db, already in memory";
97 let mv_to_disk_cmd _ =
98 if first_time then ignore (Sys.command ("mv "^tmp_db_name^" "^db_name))
99 else debug_print "HSqlite3: not copying back the db"
101 at_exit mv_to_disk_cmd;
106 HExtlib.mkdir (Filename.dirname db_to_open);
107 let db = Sqlite3.db_open db_to_open in
108 (* attach the REGEX function *)
109 Sqlite3.create_fun2 db "REGEXP"
113 | Sqlite3.Data.TEXT rex, Sqlite3.Data.BLOB s
114 | Sqlite3.Data.TEXT rex, Sqlite3.Data.TEXT s ->
115 let r = Str.regexp rex in
116 if Str.string_match r s 0 then
120 | _ -> raise (Error "wrong types to 'REGEXP'")
121 with Sys.Break -> Sqlite3.Data.INT 0L
122 | exn -> HLog.error (Printexc.to_string exn); raise exn);
130 let b = Sqlite3.db_close db in
131 if b=false then debug_print "No Closed DataBase"
134 (* XXX hack, sqlite has a print "%q" that should be used, but is not bound *)
136 let s_escaped = Pcre.replace ~pat:"'" ~templ:"''" s in
137 (*let s_escaped = Pcre.replace ~pat:"([^'])'([^'])" ~templ:"$1''$2" s in*)
139 debug_print s_escaped;
143 let string_of_rc = function
144 |Sqlite3.Rc.OK -> "Sqlite3.Rc.OK"
145 |Sqlite3.Rc.ERROR -> "Sqlite3.Rc.ERROR"
146 |Sqlite3.Rc.INTERNAL -> "Sqlite3.Rc.INTERNAL"
147 |Sqlite3.Rc.PERM -> "Sqlite3.Rc.PERM"
148 |Sqlite3.Rc.ABORT -> "Sqlite3.Rc.ABORT"
149 |Sqlite3.Rc.BUSY -> "Sqlite3.Rc.BUSY"
150 |Sqlite3.Rc.LOCKED -> "Sqlite3.Rc.LOCKED"
151 |Sqlite3.Rc.NOMEM -> "Sqlite3.Rc.NOMEM"
152 |Sqlite3.Rc.READONLY -> "Sqlite3.Rc.READONLY"
153 |Sqlite3.Rc.INTERRUPT -> "Sqlite3.Rc.INTERRUPT"
154 |Sqlite3.Rc.IOERR -> "Sqlite3.Rc.IOERR"
155 |Sqlite3.Rc.CORRUPT -> "Sqlite3.Rc.CORRUPT"
156 |Sqlite3.Rc.NOTFOUND -> "Sqlite3.Rc.NOTFOUND"
157 |Sqlite3.Rc.FULL -> "Sqlite3.Rc.FULL"
158 |Sqlite3.Rc.CANTOPEN -> "Sqlite3.Rc.CANTOPEN"
159 |Sqlite3.Rc.PROTOCOL -> "Sqlite3.Rc.PROTOCOL"
160 |Sqlite3.Rc.EMPTY -> "Sqlite3.Rc.EMPTY"
161 |Sqlite3.Rc.SCHEMA -> "Sqlite3.Rc.SCHEMA"
162 |Sqlite3.Rc.TOOBIG -> "Sqlite3.Rc.TOOBIG"
163 |Sqlite3.Rc.CONSTRAINT -> "Sqlite3.Rc.CONSTRAINT"
164 |Sqlite3.Rc.MISMATCH -> "Sqlite3.Rc.MISMATCH"
165 |Sqlite3.Rc.MISUSE -> "Sqlite3.Rc.MISUSE"
166 |Sqlite3.Rc.NOFLS -> "Sqlite3.Rc.NOFLS"
167 |Sqlite3.Rc.AUTH -> "Sqlite3.Rc.AUTH"
168 |Sqlite3.Rc.FORMAT -> "Sqlite3.Rc.FORMAT"
169 |Sqlite3.Rc.RANGE -> "Sqlite3.Rc.RANGE"
170 |Sqlite3.Rc.NOTADB -> "Sqlite3.Rc.NOTADB"
171 |Sqlite3.Rc.ROW -> "Sqlite3.Rc.ROW"
172 |Sqlite3.Rc.DONE -> "Sqlite3.Rc.DONE"
173 |Sqlite3.Rc.UNKNOWN n ->
174 "Sqlite3.Rc.UNKNOWN " ^ string_of_int (Sqlite3.Rc.int_of_unknown n)
177 let pp_rc rc = debug_print (string_of_rc rc);;
181 let stored_result = ref [] in
183 stored_result := row :: !stored_result
189 profiler.HExtlib.profile (Sqlite3.exec_no_headers db ~cb:store) s
192 | Sqlite3.Rc.OK -> !stored_result
193 | _ -> raise (Error (string_of_rc rc ^ ": " ^ Sqlite3.errmsg db ))
197 let map f = List.map f res in
198 profiler.HExtlib.profile map f
202 let iter f = List.iter f res in
203 profiler.HExtlib.profile iter f
209 match Sqlite3.errcode db with
212 let errmsg = (Sqlite3.errmsg db) in
213 if Pcre.pmatch errmsg ~pat:"^table .* already exists" then
216 if Pcre.pmatch errmsg ~pat:"^index .* already exists" then Dup_keyname
217 else if Pcre.pmatch errmsg ~pat:"^no such table: .*" then No_such_table
218 else if Pcre.pmatch errmsg ~pat:"^no such index: .*" then No_such_index
219 else GENERIC_ERROR errmsg
220 |Sqlite3.Rc.INTERNAL |Sqlite3.Rc.PERM |Sqlite3.Rc.ABORT
221 |Sqlite3.Rc.BUSY |Sqlite3.Rc.LOCKED |Sqlite3.Rc.NOMEM
222 |Sqlite3.Rc.READONLY |Sqlite3.Rc.INTERRUPT |Sqlite3.Rc.IOERR
223 |Sqlite3.Rc.CORRUPT |Sqlite3.Rc.NOTFOUND |Sqlite3.Rc.FULL
224 |Sqlite3.Rc.CANTOPEN |Sqlite3.Rc.PROTOCOL |Sqlite3.Rc.EMPTY
225 |Sqlite3.Rc.SCHEMA |Sqlite3.Rc.TOOBIG |Sqlite3.Rc.CONSTRAINT
226 |Sqlite3.Rc.MISMATCH |Sqlite3.Rc.MISUSE |Sqlite3.Rc.NOFLS
227 |Sqlite3.Rc.AUTH |Sqlite3.Rc.FORMAT |Sqlite3.Rc.RANGE
228 |Sqlite3.Rc.NOTADB |Sqlite3.Rc.ROW |Sqlite3.Rc.DONE
229 |Sqlite3.Rc.UNKNOWN _ -> GENERIC_ERROR "Sqlite3_generic_error"
234 let escape_string_for_like = ("ESCAPE \"\\\"" : ('a,'b,'c,'a) format4);;