--  -*- coding: utf-8 -*-
--
--  ZanyBlue, an Ada library and framework for finite element analysis.
--
--  Copyright (c) 2012, 2016, Michael Rohan <mrohan@zanyblue.com>
--  All rights reserved.
--
--  Redistribution and use in source and binary forms, with or without
--  modification, are permitted provided that the following conditions
--  are met:
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--    * Redistributions of source code must retain the above copyright
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--

--  @usage joinpaths path ...
--  @summary return a list of path concatenated into a single path
--  @start-doc
--  The "joinpaths" function takes one or more path components and combines
--  them into a single path, e.g.,::
--
--      ZBTest> set libdir $(joinpaths $project_dir lib)
--

with Ada.Strings.Wide_Unbounded;
with ZanyBlue.Wide_Directories;

separate (ZBTest.Functions)
function Joinpaths_Function
  (State : access State_Type;
   Args  : List_Type)
   return String
is
   pragma Unreferenced (State);

   use Ada.Strings.Wide_Unbounded;
   use ZanyBlue.Wide_Directories;

   Buffer : Unbounded_Wide_String;

begin
   if Length (Args) < 2 then
      raise Function_Usage_Error;
   end if;
   Append (Buffer, Value (Args, 2));
   for I in 3 .. Length (Args) loop
      Set_Unbounded_Wide_String
        (Buffer, Wide_Compose (To_Wide_String (Buffer), Value (Args, I)));
   end loop;
   return To_Wide_String (Buffer);
end Joinpaths_Function;