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Handle directories with no regular-file children
[dups.git]
/
dups.ml
diff --git
a/dups.ml
b/dups.ml
index
0bcc83a
..
46e8b91
100644
(file)
--- a/
dups.ml
+++ b/
dups.ml
@@
-41,7
+41,6
@@
end = struct
let find_files root =
let dirs = Queue.create () in
let files = Queue.create () in
let find_files root =
let dirs = Queue.create () in
let files = Queue.create () in
- Queue.add root dirs;
let explore parent =
Array.iter (Sys.readdir parent) ~f:(fun child ->
let path = Filename.concat parent child in
let explore parent =
Array.iter (Sys.readdir parent) ~f:(fun child ->
let path = Filename.concat parent child in
@@
-59,24
+58,16
@@
end = struct
()
)
in
()
)
in
- let next_dir () =
- match Queue.take dirs with
- | exception Queue.Empty ->
- ()
- | dir ->
- explore dir
+ explore root;
+ let rec next () =
+ match Queue.is_empty files, Queue.is_empty dirs with
+ | false, _ -> Some (Queue.take files)
+ | true , true -> None
+ | true , false ->
+ explore (Queue.take dirs);
+ next ()
in
in
- let next_file () =
- match Queue.take files with
- | exception Queue.Empty ->
- None
- | file_path ->
- Some file_path
- in
- Stream.create (fun () ->
- next_dir ();
- next_file ()
- )
+ Stream.create next
end
type input =
end
type input =
@@
-121,5
+112,12
@@
let main input =
let () =
let input = ref Paths_on_stdin in
let () =
let input = ref Paths_on_stdin in
- Arg.parse [] (fun path -> input := Root_path path) "";
+ Arg.parse [] (fun path ->
+ if Sys.file_exists path then
+ input := Root_path path
+ else begin
+ eprintf "File does not exist: %S\n%!" path;
+ exit 1
+ end
+ ) "";
main !input
main !input
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