1 files changed, 33 insertions, 6 deletions
diff --git a/lib/system.mli b/lib/system.mli
index 062c8ea8..21436909 100644
--- a/lib/system.mli
+++ b/lib/system.mli
@@ -8,14 +8,41 @@
 
 (** {5 Coqtop specific system utilities} *)
 
+(** {6 Directories} *)
+
+type unix_path = string (* path in unix-style, with '/' separator *)
+
+type file_kind =
+  | FileDir of unix_path * (* basename of path: *) string
+  | FileRegular of string (* basename of file *)
+
+val (//) : unix_path -> string -> unix_path
+
+val exists_dir : unix_path -> bool
+
+(** [exclude_search_in_dirname path] excludes [path] when processing
+    directories *)
+
+val exclude_directory : unix_path -> unit
+
+(** [process_directory f path] applies [f] on contents of directory
+    [path]; fails with Unix_error if the latter does not exists; skips
+    all files or dirs starting with "." *)
+
+val process_directory : (file_kind -> unit) -> unix_path -> unit
+
+(** [process_subdirectories f path] applies [f path/file file] on each
+    [file] of the directory [path]; fails with Unix_error if the
+    latter does not exists; kips all files or dirs starting with "." *)
+
+val process_subdirectories : (unix_path -> string -> unit) -> unix_path -> unit
+
 (** {6 Files and load paths} *)
 
 (** Load path entries remember the original root
     given by the user. For efficiency, we keep the full path (field
     [directory]), the root path and the path relative to the root. *)
 
-val exclude_search_in_dirname : string -> unit
-
 val all_subdirs : unix_path:string -> (CUnix.physical_path * string list) list
 val is_in_path : CUnix.load_path -> string -> bool
 val is_in_system_path : string -> bool
@@ -24,8 +51,6 @@ val where_in_path :
 val where_in_path_rex :
   CUnix.load_path -> Str.regexp -> (CUnix.physical_path * string) list
 
-val exists_dir : string -> bool
-
 val find_file_in_path :
   ?warn:bool -> CUnix.load_path -> string -> CUnix.physical_path * string
 
@@ -34,9 +59,11 @@ val file_exists_respecting_case : string -> string -> bool
 (** {6 I/O functions } *)
 (** Generic input and output functions, parameterized by a magic number
   and a suffix. The intern functions raise the exception [Bad_magic_number]
-  when the check fails, with the full file name. *)
+  when the check fails, with the full file name and expected/observed magic
+  numbers. *)
 
-exception Bad_magic_number of string
+type magic_number_error = {filename: string; actual: int; expected: int}
+exception Bad_magic_number of magic_number_error
 
 val raw_extern_state : int -> string -> out_channel