| 1 | (* HCoop Domtool (http://hcoop.sourceforge.net/) |
| 2 | * Copyright (c) 2006, Adam Chlipala |
| 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 License |
| 15 | * along with this program; if not, write to the Free Software |
| 16 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
| 17 | *) |
| 18 | |
| 19 | (* DBMS management code *) |
| 20 | |
| 21 | structure Dbms :> DBMS = struct |
| 22 | |
| 23 | open DataStructures |
| 24 | |
| 25 | val validDbname = CharVector.all (fn ch => Char.isAlphaNum ch orelse ch = #"_") |
| 26 | fun validEncoding encoding = |
| 27 | case encoding of |
| 28 | NONE => true |
| 29 | | SOME e => size e > 0 andalso size e < 20 andalso CharVector.all Char.isAlphaNum e |
| 30 | |
| 31 | type handler = {getpass : (unit -> Client.passwd_result) option, |
| 32 | adduser : {user : string, passwd : string option} -> string option, |
| 33 | passwd : {user : string, passwd : string} -> string option, |
| 34 | createdb : {user : string, dbname : string, encoding : string option} -> string option, |
| 35 | dropdb : {user : string, dbname : string} -> string option, |
| 36 | grant : {user : string, dbname : string} -> string option} |
| 37 | |
| 38 | val dbmses : handler StringMap.map ref = ref StringMap.empty |
| 39 | |
| 40 | fun register (name, handler) = |
| 41 | dbmses := StringMap.insert (!dbmses, name, handler) |
| 42 | |
| 43 | fun lookup name = StringMap.find (!dbmses, name) |
| 44 | |
| 45 | end |