1------------------------------------------------------------------------------
2--                                                                          --
3--                         GNAT COMPILER COMPONENTS                         --
4--                                                                          --
5--                            M D L L . F I L E S                           --
6--                                                                          --
7--                                 B o d y                                  --
8--                                                                          --
9--          Copyright (C) 1992-2018, Free Software Foundation, Inc.         --
10--                                                                          --
11-- GNAT is free software;  you can  redistribute it  and/or modify it under --
12-- terms of the  GNU General Public License as published  by the Free Soft- --
13-- ware  Foundation;  either version 3,  or (at your option) any later ver- --
14-- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
15-- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
16-- or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License --
17-- for  more details.  You should have  received  a copy of the GNU General --
18-- Public License  distributed with GNAT; see file COPYING3.  If not, go to --
19-- http://www.gnu.org/licenses for a complete copy of the license.          --
20--                                                                          --
21-- GNAT was originally developed  by the GNAT team at  New York University. --
22-- Extensive contributions were provided by Ada Core Technologies Inc.      --
23--                                                                          --
24------------------------------------------------------------------------------
25
26--  Simple services used by GNATDLL to deal with Filename extension
27
28with Ada.Strings.Fixed;
29
30package body MDLL.Fil is
31
32   use Ada;
33
34   -------------
35   -- Get_Ext --
36   -------------
37
38   function Get_Ext (Filename : String) return String is
39      use Strings.Fixed;
40      I : constant Natural := Index (Filename, ".", Strings.Backward);
41   begin
42      if I = 0 then
43         return "";
44      else
45         return Filename (I .. Filename'Last);
46      end if;
47   end Get_Ext;
48
49   ------------
50   -- Is_Ali --
51   ------------
52
53   function Is_Ali (Filename : String) return Boolean is
54   begin
55      return Get_Ext (Filename) = ".ali";
56   end Is_Ali;
57
58   ------------
59   -- Is_Obj --
60   ------------
61
62   function Is_Obj (Filename : String) return Boolean is
63      Ext : constant String := Get_Ext (Filename);
64   begin
65      return Ext = ".o" or else Ext = ".obj";
66   end Is_Obj;
67
68   ------------
69   -- Ext_To --
70   ------------
71
72   function Ext_To
73     (Filename : String;
74      New_Ext  : String := No_Ext)
75      return     String
76   is
77      use Strings.Fixed;
78      I : constant Natural := Index (Filename, ".", Strings.Backward);
79   begin
80      if I = 0 then
81         return Filename;
82
83      else
84         if New_Ext = "" then
85            return Filename (Filename'First .. I - 1);
86         else
87            return Filename (Filename'First .. I - 1) & '.' & New_Ext;
88         end if;
89      end if;
90   end Ext_To;
91
92end MDLL.Fil;
93