| 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 | fun isIdent ch = Char.isLower ch orelse Char.isDigit ch |
| 24 | |
| 25 | fun validHost s = |
| 26 | size s > 0 andalso size s < 20 |
| 27 | andalso CharVector.all (fn ch => isIdent ch orelse ch = #"-") s |
| 28 | |
| 29 | fun validDomain s = |
| 30 | size s > 0 andalso size s < 100 |
| 31 | andalso List.all validHost (String.fields (fn ch => ch = #".") s) |
| 32 | |
| 33 | val _ = Env.type_one "host" |
| 34 | Env.string |
| 35 | validHost |
| 36 | |
| 37 | val _ = Env.type_one "domain" |
| 38 | Env.string |
| 39 | validDomain |
| 40 | |
| 41 | open Ast |
| 42 | |
| 43 | val befores = ref (fn (_ : string) => ()) |
| 44 | val afters = ref (fn (_ : string) => ()) |
| 45 | |
| 46 | fun registerBefore f = |
| 47 | let |
| 48 | val old = !befores |
| 49 | in |
| 50 | befores := (fn x => (old x; f x)) |
| 51 | end |
| 52 | |
| 53 | fun registerAfter f = |
| 54 | let |
| 55 | val old = !afters |
| 56 | in |
| 57 | afters := (fn x => (old x; f x)) |
| 58 | end |
| 59 | |
| 60 | val current = ref "" |
| 61 | val currentPath = ref "" |
| 62 | |
| 63 | val scratch = ref "" |
| 64 | |
| 65 | fun currentDomain () = !current |
| 66 | |
| 67 | fun domainFile name = TextIO.openOut (!currentPath ^ name) |
| 68 | |
| 69 | fun getPath domain = |
| 70 | let |
| 71 | val toks = String.fields (fn ch => ch = #".") domain |
| 72 | |
| 73 | val elems = foldr (fn (piece, elems) => |
| 74 | let |
| 75 | val elems = piece :: elems |
| 76 | val path = String.concatWith "/" (Config.resultRoot :: rev elems) |
| 77 | val tmpPath = String.concatWith "/" (Config.tmpDir :: rev elems) |
| 78 | in |
| 79 | (if Posix.FileSys.ST.isDir |
| 80 | (Posix.FileSys.stat path) then |
| 81 | () |
| 82 | else |
| 83 | (OS.FileSys.remove path; |
| 84 | OS.FileSys.mkDir path)) |
| 85 | handle OS.SysErr _ => OS.FileSys.mkDir path; |
| 86 | |
| 87 | (if Posix.FileSys.ST.isDir |
| 88 | (Posix.FileSys.stat tmpPath) then |
| 89 | () |
| 90 | else |
| 91 | (OS.FileSys.remove tmpPath; |
| 92 | OS.FileSys.mkDir tmpPath)) |
| 93 | handle OS.SysErr _ => OS.FileSys.mkDir tmpPath; |
| 94 | |
| 95 | elems |
| 96 | end) [] toks |
| 97 | in |
| 98 | fn root => String.concatWith "/" (root :: rev ("" :: elems)) |
| 99 | end |
| 100 | |
| 101 | datatype file_action' = |
| 102 | Add' of {src : string, dst : string} |
| 103 | | Delete' of string |
| 104 | | Modify' of {src : string, dst : string} |
| 105 | |
| 106 | fun findDiffs dom = |
| 107 | let |
| 108 | val realPath = getPath dom Config.resultRoot |
| 109 | val tmpPath = !currentPath |
| 110 | |
| 111 | val dir = Posix.FileSys.opendir realPath |
| 112 | |
| 113 | fun loopReal acts = |
| 114 | case Posix.FileSys.readdir dir of |
| 115 | NONE => (Posix.FileSys.closedir dir; |
| 116 | acts) |
| 117 | | SOME fname => |
| 118 | let |
| 119 | val real = OS.Path.joinDirFile {dir = realPath, |
| 120 | file = fname} |
| 121 | val tmp = OS.Path.joinDirFile {dir = tmpPath, |
| 122 | file = fname} |
| 123 | in |
| 124 | if Posix.FileSys.ST.isDir (Posix.FileSys.stat real) then |
| 125 | loopReal acts |
| 126 | else if Posix.FileSys.access (tmp, []) then |
| 127 | if Slave.shell [Config.diff, " ", real, " ", tmp] then |
| 128 | loopReal acts |
| 129 | else |
| 130 | loopReal (Modify' {src = tmp, dst = real} :: acts) |
| 131 | else |
| 132 | loopReal (Delete' real :: acts) |
| 133 | end |
| 134 | |
| 135 | val acts = loopReal [] |
| 136 | |
| 137 | val dir = Posix.FileSys.opendir tmpPath |
| 138 | |
| 139 | fun loopTmp acts = |
| 140 | case Posix.FileSys.readdir dir of |
| 141 | NONE => (Posix.FileSys.closedir dir; |
| 142 | acts) |
| 143 | | SOME fname => |
| 144 | let |
| 145 | val real = OS.Path.joinDirFile {dir = realPath, |
| 146 | file = fname} |
| 147 | val tmp = OS.Path.joinDirFile {dir = tmpPath, |
| 148 | file = fname} |
| 149 | in |
| 150 | if Posix.FileSys.ST.isDir (Posix.FileSys.stat tmp) then |
| 151 | loopTmp acts |
| 152 | else if Posix.FileSys.access (real, []) then |
| 153 | loopTmp acts |
| 154 | else |
| 155 | loopTmp (Add' {src = tmp, dst = real} :: acts) |
| 156 | end |
| 157 | |
| 158 | val acts = loopTmp acts |
| 159 | in |
| 160 | acts |
| 161 | end |
| 162 | |
| 163 | val _ = Env.container_one "domain" |
| 164 | ("domain", Env.string) |
| 165 | (fn dom => |
| 166 | let |
| 167 | val path = getPath dom Config.tmpDir |
| 168 | in |
| 169 | current := dom; |
| 170 | currentPath := path; |
| 171 | !befores dom |
| 172 | end, |
| 173 | fn () => |
| 174 | let |
| 175 | val dom = !current |
| 176 | val () = !afters dom |
| 177 | |
| 178 | val diffs = findDiffs dom |
| 179 | |
| 180 | val diffs = map (fn Add' {src, dst} => |
| 181 | (Slave.shellF ([Config.cp, " ", src, " ", dst], |
| 182 | fn cl => "Copy failed: " ^ cl); |
| 183 | {action = Slave.Add, |
| 184 | domain = dom, |
| 185 | file = dst}) |
| 186 | | Delete' dst => |
| 187 | (OS.FileSys.remove dst |
| 188 | handle OS.SysErr _ => |
| 189 | ErrorMsg.error NONE ("Delete failed for " ^ dst); |
| 190 | {action = Slave.Delete, |
| 191 | domain = dom, |
| 192 | file = dst}) |
| 193 | | Modify' {src, dst} => |
| 194 | (Slave.shellF ([Config.cp, " ", src, " ", dst], |
| 195 | fn cl => "Copy failed: " ^ cl); |
| 196 | {action = Slave.Modify, |
| 197 | domain = dom, |
| 198 | file = dst})) diffs |
| 199 | in |
| 200 | if !ErrorMsg.anyErrors then |
| 201 | () |
| 202 | else |
| 203 | Slave.handleChanges diffs; |
| 204 | ignore (Slave.shellF ([Config.rm, " -rf ", Config.tmpDir, "/*"], |
| 205 | fn cl => "Temp file cleanup failed: " ^ cl)) |
| 206 | end) |
| 207 | |
| 208 | end |