Source file `files.ml`

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(*********************************************************************************)
(*                Ojs-base                                                       *)
(*                                                                               *)
(*    Copyright (C) 2014-2021 INRIA. All rights reserved.                        *)
(*                                                                               *)
(*    This program is free software; you can redistribute it and/or modify       *)
(*    it under the terms of the GNU General Public License as                    *)
(*    published by the Free Software Foundation, version 3 of the License.       *)
(*                                                                               *)
(*    This program is distributed in the hope that it will be useful,            *)
(*    but WITHOUT ANY WARRANTY; without even the implied warranty of             *)
(*    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the               *)
(*    GNU Library General Public License for more details.                       *)
(*                                                                               *)
(*    You should have received a copy of the GNU General Public                  *)
(*    License along with this program; if not, write to the Free Software        *)
(*    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA                   *)
(*    02111-1307  USA                                                            *)
(*                                                                               *)
(*    As a special exception, you have permission to link this program           *)
(*    with the OCaml compiler and distribute executables, as long as you         *)
(*    follow the requirements of the GNU GPL in regard to all of the             *)
(*    software in the executable aside from the OCaml compiler.                  *)
(*                                                                               *)
(*    Contact: Maxence.Guesdon@inria.fr                                          *)
(*                                                                               *)
(*********************************************************************************)

(** *)

let is_dir file = (Unix.stat file).Unix.st_kind = Unix.S_DIR

let file_trees_of_dir ?(filepred=fun _ -> true) root_dir =
  let root_dir = Ojs_base.Path.to_string root_dir in
  let base s = Filename.basename s in
  let filepred s = filepred (Ojs_base.Path.of_string s) in
  let rec iter dir =
    let entries =
      Find.find_list
        Find.Stderr
        [dir]
        [ Find.Maxdepth 1 ;
          Find.Predicate filepred ;
        ]
    in
    let pred s =
      s <> dir
        && (Filename.basename s <> Filename.current_dir_name)
        && (Filename.basename s <> Filename.parent_dir_name)
    in
    let entries = List.filter pred entries in
    let entries = List.sort String.compare entries in
    let (dirs, files) = List.partition is_dir entries in
    let dir s = `Dir (base s, iter s) in
    let file s = `File (base s, Magic_mime.lookup s) in
    (List.map dir dirs) @ (List.map file files)
  in
  iter root_dir