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 /* Debugger interface (don't change the order of the following lines) */
  47 #define GDB_TYPE SCM
  48 #include <libguile/gdb_interface.h>
  49 GDB_INTERFACE;
  50
  51 static void
  52 inner_main (void *closure SCM_UNUSED, int argc, char **argv)
  53 {
  54 #ifdef __MINGW32__
  55   /* This is necessary to startup the Winsock API under Win32. */
  56   WSADATA WSAData;
  57   WSAStartup (0x0202, &WSAData);
  58   GDB_INTERFACE_INIT;
  59 #endif /* __MINGW32__ */
  60
  61   /* module initializations would go here */
  62   scm_shell (argc, argv);
  63
  64 #ifdef __MINGW32__
  65   WSACleanup ();
  66 #endif /* __MINGW32__ */
  67 }
  68
  69 static int
  70 get_integer_from_environment (const char *var, int def)
  71 {
  72   char *end = 0;
  73   char *val = getenv (var);
  74   long res = def;
  75   if (!val)
  76     return def;
  77   res = strtol (val, &end, 10);
  78   if (end == val)
  79     {
  80       fprintf (stderr, "guile: warning: invalid %s: %s\n", var, val);
  81       return def;
  82     }
  83   return res;
  84 }
  85
  86 static int
  87 should_install_locale (void)
  88 {
  89   /* If the GUILE_INSTALL_LOCALE environment variable is unset,
  90      or set to a nonzero value, we should install the locale via
  91      setlocale().  */
  92   return get_integer_from_environment ("GUILE_INSTALL_LOCALE", 1);
  93 }
  94
  95 int
  96 main (int argc, char **argv)
  97 {
  98   /* If we should install a locale, do it right at the beginning so that
  99      string conversion for command-line arguments, along with possible
 100      error messages, use the right locale.  See
 101      <https://lists.gnu.org/archive/html/guile-devel/2011-11/msg00041.html>
 102      for the rationale.  */
 103   if (should_install_locale () && setlocale (LC_ALL, "") == NULL)
 104     fprintf (stderr, "guile: warning: failed to install locale\n");
 105
 106   scm_install_gmp_memory_functions = 1;
 107   scm_boot_guile (argc, argv, inner_main, 0);
 108   return 0; /* never reached */
 109 }
 110
 111 /*
 112   Local Variables:
 113   c-file-style: "gnu"
 114   End:
 115 */