RosettaCodeData/Task/Visualize-a-tree/Ada/visualize-a-tree.ada

37 lines
991 B
Ada

with Ada.Text_IO, Ada.Directories;
procedure Directory_Tree is
procedure Print_Tree(Current: String; Indention: Natural := 0) is
function Spaces(N: Natural) return String is
(if N= 0 then "" else " " & Spaces(N-1));
use Ada.Directories;
Search: Search_Type;
Found: Directory_Entry_Type;
begin
Start_Search(Search, Current, "");
while More_Entries(Search) loop
Get_Next_Entry(Search, Found);
declare
Name: String := Simple_Name(Found);
Dir: Boolean := Kind(Found) = Directory;
begin
if Name(Name'First) /= '.' then
-- skip all files who's names start with ".", namely "." and ".."
Ada.Text_IO.Put_Line(Spaces(2*Indention) & Simple_Name(Found)
& (if Dir then " (dir)" else ""));
if Dir then
Print_Tree(Full_Name(Found), Indention + 1);
end if;
end if;
end;
end loop;
end Print_Tree;
begin
Print_Tree(Ada.Directories.Current_Directory);
end Directory_Tree;