diff options
Diffstat (limited to 'lib/system.ml')
| -rw-r--r-- | lib/system.ml | 34 |
1 files changed, 13 insertions, 21 deletions
diff --git a/lib/system.ml b/lib/system.ml index 605cbca87..cc567360b 100644 --- a/lib/system.ml +++ b/lib/system.ml @@ -6,19 +6,12 @@ open Util open Unix (* Files and load path. *) - -let load_path = ref ([] : string list) - -let add_path dir = load_path := dir :: !load_path - -let del_path dir = - if List.mem dir !load_path then - load_path := List.filter (fun s -> s <> dir) !load_path - -let search_paths () = !load_path - (* All subdirectories, recursively *) +let exists_dir dir = + try let _ = opendir dir in true + with Unix_error _ -> false + let all_subdirs dir = let l = ref [] in let add f = l := f :: !l in @@ -42,8 +35,6 @@ let all_subdirs dir = in traverse dir; List.rev !l -let radd_path dir = List.iter add_path (all_subdirs dir) - let safe_getenv_def var def = try Sys.getenv var @@ -68,13 +59,13 @@ let search_in_path path filename = let where_in_path = search_in_path -let find_file_in_path name = +let find_file_in_path paths name = let globname = glob name in if not (Filename.is_relative globname) then globname else try - search_in_path !load_path name + search_in_path paths name with Not_found -> errorlabstrm "System.find_file_in_path" (hOV 0 [< 'sTR"Can't find file" ; 'sPC ; 'sTR name ; 'sPC ; @@ -108,15 +99,16 @@ exception Bad_magic_number of string let (raw_extern_intern : int -> string -> - (string -> string * out_channel) * (string -> string * in_channel)) + (string -> string * out_channel) + * (string list -> string -> string * in_channel)) = fun magic suffix -> let extern_state name = let (_,channel) as filec = open_trapping_failure (fun n -> n,open_out_bin n) name suffix in output_binary_int channel magic; filec - and intern_state name = - let fname = find_file_in_path (make_suffix name suffix) in + and intern_state paths name = + let fname = find_file_in_path paths (make_suffix name suffix) in let channel = open_in_bin fname in if input_binary_int channel <> magic then raise (Bad_magic_number fname); @@ -125,7 +117,7 @@ let (raw_extern_intern : (extern_state,intern_state) let (extern_intern : - int -> string -> (string -> 'a -> unit) * (string -> 'a)) + int -> string -> (string -> 'a -> unit) * (string list -> string -> 'a)) = fun magic suffix -> let (raw_extern,raw_intern) = raw_extern_intern magic suffix in let extern_state name val_0 = @@ -138,9 +130,9 @@ let (extern_intern : begin try_remove fname; raise e end with Sys_error s -> error ("System error: " ^ s) - and intern_state name = + and intern_state paths name = try - let (fname,channel) = raw_intern name in + let (fname,channel) = raw_intern paths name in let v = marshal_in channel in close_in channel; v |