datatype file_action =
Add
- | Delete
+ | Delete of bool
| Modify
+fun isDelete (Delete _) = true
+ | isDelete _ = false
+
type file_status = {action : file_action,
domain : string,
dir : string,
end
fun handleChanges fs = (!preHandler ();
- app (!fileHandler) fs;
+ app (fn recd as {action, file, ...} =>
+ (!fileHandler recd;
+ case action of
+ Delete b =>
+ if b andalso Posix.FileSys.access (file, []) then
+ OS.FileSys.remove file
+ else
+ ()
+ | _ => ())) fs;
!postHandler ())
fun shell ss = OS.Process.isSuccess (OS.Process.system (String.concat ss))
ErrorMsg.error NONE (msg s)
end
+fun shellOutput ss =
+ let
+ val proc = Unix.execute ("/bin/bash", ["-c", String.concat ss ^ " 2>&1"])
+ val inf = Unix.textInstreamOf proc
+
+ fun loop out =
+ case TextIO.inputLine inf of
+ NONE => String.concat (rev out)
+ | SOME line => loop (line :: out)
+
+ val lines = loop []
+ in
+ print lines;
+ if OS.Process.isSuccess (Unix.reap proc) then
+ NONE
+ else
+ SOME lines
+ end
+
fun hostname () =
let
val inf = TextIO.openIn "/etc/hostname"
TextIO.closeOut outf
end
+fun lineInFile fname line =
+ let
+ val inf = TextIO.openIn fname
+ val line' = line ^ "\n"
+
+ fun loop () =
+ case TextIO.inputLine inf of
+ NONE => false
+ | SOME line => line = line' orelse loop ()
+ in
+ loop ()
+ before TextIO.closeIn inf
+ end handle IO.Io _ => false
+
+fun inGroup {user, group} =
+ List.exists (fn x => x = user)
+ (Posix.SysDB.Group.members (Posix.SysDB.getgrnam group))
+ handle OS.SysErr _ => false
+
+fun mkDirAll dir = ignore (OS.Process.system ("mkdir -p " ^ dir))
+
+fun remove (ls, x) = List.filter (fn y => y <> x) ls
+fun removeDups ls = List.foldr (fn (x, ls) =>
+ if List.exists (fn y => y = x) ls then
+ ls
+ else
+ x :: ls) [] ls
+
+fun moveDirCreate {from, to} =
+ (mkDirAll to;
+ if Posix.FileSys.access (from, []) then
+ (ignore (OS.Process.system ("rm -rf " ^ to));
+ ignore (OS.Process.system ("cp -r " ^ from ^ " " ^ to));
+ ignore (OS.Process.system ("rm -rf " ^ from)))
+ else
+ ())
+
end