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|
(**************************************************************************)
(* *)
(* Ocamlgraph: a generic graph library for OCaml *)
(* Copyright (C) 2004-2010 *)
(* Sylvain Conchon, Jean-Christophe Filliatre and Julien Signoles *)
(* *)
(* This software is free software; you can redistribute it and/or *)
(* modify it under the terms of the GNU Library General Public *)
(* License version 2.1, with the special exception on linking *)
(* described in file LICENSE. *)
(* *)
(* This software 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. *)
(* *)
(**************************************************************************)
open Unix ;;
type t = {
id : int;
name : string ;
children : t list Lazy.t
} ;;
let id t = t.id
let newid = let r = ref 0 in fun () -> incr r; !r
type label = string ;;
let children t = Lazy.force t.children ;;
let label t = t.name ;;
let string_of_label s = s ;;
let is_dir path =
try (lstat path).st_kind = S_DIR
with Unix_error _ -> false ;;
let less t1 t2 = t1.name <= t2.name ;;
let rec tree_list_from_path path =
let opt_handle =
try Some(opendir path)
with Unix_error _ -> None in
match opt_handle with
| None -> []
| Some handle ->
let list = Sort.list less (tree_list_from_handle path handle) in
closedir handle ; list
and tree_list_from_handle path handle =
let opt_name =
try Some(readdir handle)
with End_of_file -> None in
match opt_name with
| None -> []
| Some name ->
let path' = path ^ "/" ^ name in
if name <> "." && name <> ".." && is_dir path' then
{ id = newid(); name = name ; children = lazy (tree_list_from_path path') } ::
tree_list_from_handle path handle
else
tree_list_from_handle path handle ;;
let from_dir path name =
try
let path' = path ^ "/" ^ name in
if is_dir path' then
{ id = newid(); name = name ;
children = lazy (tree_list_from_path path') }
else invalid_arg "DirTree.from_dir"
with _ -> failwith "DirTree.from_dir" ;;
|
