| 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 | (* Domain-related primitive actions *) |
| 20 | |
| 21 | structure Domain :> DOMAIN = struct |
| 22 | |
| 23 | open Ast |
| 24 | |
| 25 | val befores = ref (fn (_ : string) => ()) |
| 26 | val afters = ref (fn (_ : string) => ()) |
| 27 | |
| 28 | fun registerBefore f = |
| 29 | let |
| 30 | val old = !befores |
| 31 | in |
| 32 | befores := (fn x => (old x; f x)) |
| 33 | end |
| 34 | |
| 35 | fun registerAfter f = |
| 36 | let |
| 37 | val old = !afters |
| 38 | in |
| 39 | afters := (fn x => (old x; f x)) |
| 40 | end |
| 41 | |
| 42 | val current = ref "" |
| 43 | val currentPath = ref "" |
| 44 | |
| 45 | fun currentDomain () = !current |
| 46 | |
| 47 | fun domainFile name = TextIO.openOut (!currentPath ^ name) |
| 48 | |
| 49 | fun getPath domain = |
| 50 | let |
| 51 | val toks = String.fields (fn ch => ch = #".") domain |
| 52 | |
| 53 | val elems = foldr (fn (piece, elems) => |
| 54 | let |
| 55 | val elems = piece :: elems |
| 56 | val path = String.concatWith "/" (Config.configRoot :: rev elems) |
| 57 | in |
| 58 | (if Posix.FileSys.ST.isDir |
| 59 | (Posix.FileSys.stat path) then |
| 60 | () |
| 61 | else |
| 62 | (OS.FileSys.remove path; |
| 63 | OS.FileSys.mkDir path)) |
| 64 | handle OS.SysErr _ => OS.FileSys.mkDir path; |
| 65 | elems |
| 66 | end) [] toks |
| 67 | in |
| 68 | String.concatWith "/" (Config.configRoot :: rev elems) |
| 69 | end |
| 70 | |
| 71 | val _ = Env.registerContainer ("domain", |
| 72 | fn (_, [(EString dom, _)]) => (current := dom; |
| 73 | currentPath := getPath dom; |
| 74 | !befores dom; |
| 75 | StringMap.empty) |
| 76 | | _ => Env.badArgs "domain", |
| 77 | fn () => !afters (!current)) |
| 78 | |
| 79 | end |