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guix/gnu/packages/aux-files/guile-launcher.c

89 lines
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C

/* GNU Guix --- Functional package management for GNU
Copyright 1996-1997,2000-2001,2006,2008,2011,2013,2018,2020
Free Software Foundation, Inc.
Copyright (C) 2020 Ludovic Courtès <ludo@gnu.org>
This file is part of GNU Guix.
GNU Guix 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 3 of the License, or (at
your option) any later version.
GNU Guix 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 GNU Guix. If not, see <http://www.gnu.org/licenses/>. */
/* This file implements a variant of the 'guile' executable that does not
complain about locale issues and arranges to reduce startup time by
ignoring GUILE_LOAD_PATH and GUILE_LOAD_COMPILED_PATH until it has
booted. */
#include <stdlib.h>
#include <string.h>
#include <locale.h>
#include <libguile.h>
/* Saved values of GUILE_LOAD_PATH and GUILE_LOAD_COMPILED_PATH. */
static const char *load_path, *load_compiled_path;
static void
inner_main (void *unused, int argc, char **argv)
{
if (load_path != NULL)
{
setenv ("GUILE_LOAD_PATH", load_path, 1);
SCM load_path_var =
scm_c_public_lookup ("guile", "%load-path");
SCM addition =
scm_parse_path (scm_from_locale_string (load_path), SCM_EOL);
scm_variable_set_x (load_path_var,
scm_append
(scm_list_2 (scm_variable_ref (load_path_var),
addition)));
}
if (load_compiled_path != NULL)
{
setenv ("GUILE_LOAD_COMPILED_PATH", load_compiled_path, 1);
SCM load_compiled_path_var =
scm_c_public_lookup ("guile", "%load-compiled-path");
SCM addition =
scm_parse_path (scm_from_locale_string (load_compiled_path), SCM_EOL);
scm_variable_set_x (load_compiled_path_var,
scm_append
(scm_list_2 (scm_variable_ref (load_compiled_path_var),
addition)));
}
scm_shell (argc, argv);
}
int
main (int argc, char **argv)
{
/* Try to install the current locale; remain silent if it fails. */
if (setlocale (LC_ALL, "") == NULL)
/* The 'guix pull'-provided 'guix' includes at least en_US.utf8 so use
that. That gives us UTF-8 support for 'scm_to_locale_string', etc.,
which is always preferable over the C locale. */
setlocale (LC_ALL, "en_US.utf8");
const char *str;
str = getenv ("GUILE_LOAD_PATH");
load_path = str != NULL ? strdup (str) : NULL;
str = getenv ("GUILE_LOAD_COMPILED_PATH");
load_compiled_path = str ? strdup (str) : NULL;
unsetenv ("GUILE_LOAD_PATH");
unsetenv ("GUILE_LOAD_COMPILED_PATH");
scm_install_gmp_memory_functions = 1;
scm_boot_guile (argc, argv, inner_main, 0);
return 0; /* never reached */
}