File : g-timsta.adb
1 ------------------------------------------------------------------------------
2 -- --
3 -- GNAT RUN-TIME COMPONENTS --
4 -- --
5 -- G N A T . T I M E _ S T A M P --
6 -- --
7 -- B o d y --
8 -- --
9 -- Copyright (C) 2008-2014, 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. --
17 -- --
18 -- --
19 -- --
20 -- --
21 -- --
22 -- You should have received a copy of the GNU General Public License and --
23 -- a copy of the GCC Runtime Library Exception along with this program; --
24 -- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
25 -- <http://www.gnu.org/licenses/>. --
26 -- --
27 -- GNAT was originally developed by the GNAT team at New York University. --
28 -- Extensive contributions were provided by Ada Core Technologies Inc. --
29 -- --
30 ------------------------------------------------------------------------------
31
32 with Interfaces.C; use Interfaces.C;
33
34 package body GNAT.Time_Stamp is
35
36 subtype time_stamp is char_array (0 .. 22);
37 type time_stamp_ptr is access all time_stamp;
38 -- The desired ISO 8601 string format has exactly 22 characters. We add
39 -- one additional character for '\0'. The indexing starts from zero to
40 -- accommodate the C layout.
41
42 procedure gnat_current_time_string (Value : time_stamp_ptr);
43 pragma Import (C, gnat_current_time_string, "__gnat_current_time_string");
44
45 ------------------
46 -- Current_Time --
47 ------------------
48
49 function Current_Time return String is
50 Result : aliased time_stamp;
51
52 begin
53 gnat_current_time_string (Result'Unchecked_Access);
54 Result (22) := nul;
55
56 return To_Ada (Result);
57 end Current_Time;
58
59 end GNAT.Time_Stamp;