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- // $Id: home.C,v 1.1 1998/05/21 18:32:39 zeller Exp $ -*- C++ -*-
- // Return home directory
-
- // Copyright (C) 1998 Technische Universitaet Braunschweig, Germany.
- // Written by Andreas Zeller <zeller@ips.cs.tu-bs.de>.
- //
- // This file is part of DDD.
- //
- // DDD is free software; you can redistribute it and/or
- // modify it under the terms of the GNU General Public
- // License as published by the Free Software Foundation; either
- // version 2 of the License, or (at your option) any later version.
- //
- // DDD is distributed in the hope that it will be useful,
- // but WITHOUT ANY WARRANTY; without even the implied warranty of
- // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
- // See the GNU General Public License for more details.
- //
- // You should have received a copy of the GNU General Public
- // License along with DDD -- see the file COPYING.
- // If not, write to the Free Software Foundation, Inc.,
- // 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
- //
- // DDD is the data display debugger.
- // For details, see the DDD World-Wide-Web page,
- // `http://www.cs.tu-bs.de/softech/ddd/',
- // or send a mail to the DDD developers <ddd@ips.cs.tu-bs.de>.
-
- char home_rcsid[] =
- "$Id: home.C,v 1.1 1998/05/21 18:32:39 zeller Exp $";
-
- #ifdef __GNUG__
- #pragma implementation
- #endif
-
- #include "home.h"
- #include "strclass.h"
-
- #include <stdlib.h>
- #include <unistd.h>
- #include <pwd.h>
-
- // Return home dir
- char *gethome()
- {
- static string home = "";
-
- // Try using $HOME
- if (home == "")
- {
- char *h = getenv("HOME");
- if (h != NULL)
- home = h;
- }
-
- // Try using passwd entry
- if (home == "")
- {
- struct passwd *pw = 0;
-
- char *user = getenv("USER");
- if (user == 0)
- user = getenv("LOGNAME");
-
- if (user != 0)
- pw = getpwnam(user);
- if (pw == 0)
- pw = getpwuid(getuid());
- if (pw != 0)
- home = pw->pw_dir;
- }
-
- // Revert to current dir
- if (home == "")
- home = ".";
-
- return home;
- }
-