libguile/guile.c

   1 /* Copyright (C) 1996, 1997, 2000, 2001, 2006, 2008,
   2  *   2011, 2013 Free Software Foundation, Inc.
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public License
   6  * as published by the Free Software Foundation; either version 3 of
   7  * the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful, but
  10  * WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  17  * 02110-1301 USA
  18  */
  19
  20 /* This is the 'main' function for the `guile' executable.  It is not
  21    included in libguile.a.
  22
  23    Eventually, we hope this file will be automatically generated,
  24    based on the list of installed, statically linked libraries on the
  25    system.  For now, please don't put interesting code in here.  */
  26
  27 #ifdef HAVE_CONFIG_H
  28 #  include <config.h>
  29 #endif
  30
  31 #ifdef __MINGW32__
  32 # define SCM_IMPORT 1
  33 #endif
  34 #include <libguile.h>
  35
  36 #ifdef HAVE_CONFIG_H
  37 #include <libguile/scmconfig.h>
  38 #endif
  39 #include <ltdl.h>
  40 #include <locale.h>
  41
  42 #ifdef HAVE_WINSOCK2_H
  43 #include <winsock2.h>
  44 #endif
  45
  46 static void
  47 inner_main (void *closure SCM_UNUSED, int argc, char **argv)
  48 {
  49 #ifdef __MINGW32__
  50   /* This is necessary to startup the Winsock API under Win32. */
  51   WSADATA WSAData;
  52   WSAStartup (0x0202, &WSAData);
  53 #endif /* __MINGW32__ */
  54
  55   /* module initializations would go here */
  56   scm_shell (argc, argv);
  57
  58 #ifdef __MINGW32__
  59   WSACleanup ();
  60 #endif /* __MINGW32__ */
  61 }
  62
  63 static int
  64 get_integer_from_environment (const char *var, int def)
  65 {
  66   char *end = 0;
  67   char *val = getenv (var);
  68   long res = def;
  69   if (!val)
  70     return def;
  71   res = strtol (val, &end, 10);
  72   if (end == val)
  73     {
  74       fprintf (stderr, "guile: warning: invalid %s: %s\n", var, val);
  75       return def;
  76     }
  77   return res;
  78 }
  79
  80 static int
  81 should_install_locale (void)
  82 {
  83   /* If the GUILE_INSTALL_LOCALE environment variable is unset,
  84      or set to a nonzero value, we should install the locale via
  85      setlocale().  */
  86   return get_integer_from_environment ("GUILE_INSTALL_LOCALE", 1);
  87 }
  88
  89 int
  90 main (int argc, char **argv)
  91 {
  92   /* If we should install a locale, do it right at the beginning so that
  93      string conversion for command-line arguments, along with possible
  94      error messages, use the right locale.  See
  95      <https://lists.gnu.org/archive/html/guile-devel/2011-11/msg00041.html>
  96      for the rationale.  */
  97   if (should_install_locale () && setlocale (LC_ALL, "") == NULL)
  98     fprintf (stderr, "guile: warning: failed to install locale\n");
  99
 100   scm_install_gmp_memory_functions = 1;
 101   scm_boot_guile (argc, argv, inner_main, 0);
 102   return 0; /* never reached */
 103 }
 104
 105 /*
 106   Local Variables:
 107   c-file-style: "gnu"
 108   End:
 109 */