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Task/Unix-ls/Ada/unix-ls.ada

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+with Ada.Text_IO, Ada.Directories, Ada.Containers.Indefinite_Vectors;
+
+procedure Directory_List is
+
+   use Ada.Directories, Ada.Text_IO;
+   Search: Search_Type; Found: Directory_Entry_Type;
+   package SV is new Ada.Containers.Indefinite_Vectors(Natural, String);
+   Result: SV.Vector;
+   package Sorting is new SV.Generic_Sorting; use Sorting;
+   function SName return String is (Simple_Name(Found));
+
+begin
+   Start_Search(Search, Directory => ".", Pattern =>"");
+   while More_Entries(Search) loop
+      Get_Next_Entry(Search, Found);
+      declare
+         Name: String := Simple_Name(Found);
+      begin
+         if Name(Name'First) /= '.' then
+            Result.Append(Name);
+         end if; -- ingnore filenames beginning with "."
+      end;
+   end loop; -- now Result holds the entire directory in arbitrary order
+
+   Sort(Result); -- nor Result holds the directory in proper order
+   for I in Result.First_Index .. Result.Last_Index loop
+      Put_Line(Result.Element(I));
+   end loop;
+end Directory_List;