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[/] [openrisc/] [trunk/] [gnu-src/] [gcc-4.5.1/] [gcc/] [ada/] [tempdir.adb] - Blame information for rev 281

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1 281 jeremybenn
------------------------------------------------------------------------------
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--                                                                          --
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--                         GNAT COMPILER COMPONENTS                         --
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--                                                                          --
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--                              T E M P D I R                               --
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--                                                                          --
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--                                 B o d y                                  --
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--                                                                          --
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--          Copyright (C) 2003-2009, Free Software Foundation, Inc.         --
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--                                                                          --
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-- GNAT is free software;  you can  redistribute it  and/or modify it under --
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-- terms of the  GNU General Public License as published  by the Free Soft- --
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-- ware  Foundation;  either version 3,  or (at your option) any later ver- --
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-- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
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-- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
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-- or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License --
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-- for  more details.  You should have  received  a copy of the GNU General --
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-- Public License  distributed with GNAT; see file COPYING3.  If not, go to --
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-- http://www.gnu.org/licenses for a complete copy of the license.          --
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--                                                                          --
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-- GNAT was originally developed  by the GNAT team at  New York University. --
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-- Extensive contributions were provided by Ada Core Technologies Inc.      --
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--                                                                          --
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------------------------------------------------------------------------------
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with GNAT.Directory_Operations; use GNAT.Directory_Operations;
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with Hostparm; use Hostparm;
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with Opt;      use Opt;
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with Output;   use Output;
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package body Tempdir is
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   Tmpdir_Needs_To_Be_Displayed : Boolean := True;
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   Tmpdir    : constant String := "TMPDIR";
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   Gnutmpdir : constant String := "GNUTMPDIR";
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   No_Dir    : aliased String  := "";
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   Temp_Dir  : String_Access   := No_Dir'Access;
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   ----------------------
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   -- Create_Temp_File --
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   ----------------------
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   procedure Create_Temp_File
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     (FD   : out File_Descriptor;
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      Name : out Path_Name_Type)
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   is
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      File_Name : String_Access;
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      Current_Dir : constant String := Get_Current_Dir;
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      function Directory return String;
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      --  Returns Temp_Dir.all if not empty, else return current directory
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      ---------------
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      -- Directory --
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      ---------------
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      function Directory return String is
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      begin
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         if Temp_Dir'Length /= 0 then
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            return Temp_Dir.all;
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         else
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            return Current_Dir;
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         end if;
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      end Directory;
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   --  Start of processing Tempdir
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   begin
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      if Temp_Dir'Length /= 0 then
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         --  In verbose mode, display once the value of TMPDIR, so that
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         --  if temp files cannot be created, it is easier to understand
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         --  where temp files are supposed to be created.
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         if Verbose_Mode and then Tmpdir_Needs_To_Be_Displayed then
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            Write_Str ("TMPDIR = """);
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            Write_Str (Temp_Dir.all);
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            Write_Line ("""");
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            Tmpdir_Needs_To_Be_Displayed := False;
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         end if;
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         --  Change directory to TMPDIR before creating the temp file,
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         --  then change back immediately to the previous directory.
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         Change_Dir (Temp_Dir.all);
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         Create_Temp_File (FD, File_Name);
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         Change_Dir (Current_Dir);
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      else
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         Create_Temp_File (FD, File_Name);
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      end if;
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      if FD = Invalid_FD then
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         Write_Line ("could not create temporary file in " & Directory);
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         Name := No_Path;
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      else
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         declare
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            Path_Name : constant String :=
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                          Normalize_Pathname
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                            (Directory & Directory_Separator & File_Name.all);
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         begin
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            Name_Len := Path_Name'Length;
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            Name_Buffer (1 .. Name_Len) := Path_Name;
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            Name := Name_Find;
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            Free (File_Name);
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         end;
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      end if;
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   end Create_Temp_File;
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--  Start of elaboration for package Tempdir
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begin
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   declare
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      Dir : String_Access;
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   begin
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      --  On VMS, if GNUTMPDIR is defined, use it
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      if OpenVMS then
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         Dir := Getenv (Gnutmpdir);
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         --  Otherwise, if GNUTMPDIR is not defined, try TMPDIR
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         if Dir'Length = 0 then
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            Dir := Getenv (Tmpdir);
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         end if;
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      else
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         Dir := Getenv (Tmpdir);
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      end if;
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      if Dir'Length > 0 and then
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        Is_Absolute_Path (Dir.all) and then
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        Is_Directory (Dir.all)
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      then
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         Temp_Dir := new String'(Normalize_Pathname (Dir.all));
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      end if;
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      Free (Dir);
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   end;
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end Tempdir;

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