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/* Copyright 1995-1996,1998-2004,2006-2007,2009,2011,2013,2018
Free Software Foundation, Inc.
This file is part of Guile.
Guile is free software: you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published
by the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
Guile 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 Lesser General Public
License for more details.
You should have received a copy of the GNU Lesser General Public
License along with Guile. If not, see
<https://www.gnu.org/licenses/>. */
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <string.h>
#include "fluids.h"
#include "gsubr.h"
#include "modules.h"
#include "pairs.h"
#include "strings.h"
#include "symbols.h"
#include "variable.h"
#include "feature.h"
SCM scm_program_arguments_fluid;
static SCM features_var;
void
scm_add_feature (const char *str)
{
SCM old = SCM_VARIABLE_REF (features_var);
SCM new = scm_cons (scm_from_utf8_symbol (str), old);
SCM_VARIABLE_SET (features_var, new);
}
SCM_DEFINE (scm_program_arguments, "program-arguments", 0, 0, 0,
(),
"@deffnx {Scheme Procedure} command-line\n"
"Return the list of command line arguments passed to Guile, as a list of\n"
"strings. The list includes the invoked program name, which is usually\n"
"@code{\"guile\"}, but excludes switches and parameters for command line\n"
"options like @code{-e} and @code{-l}.")
#define FUNC_NAME s_scm_program_arguments
{
return scm_fluid_ref (scm_program_arguments_fluid);
}
#undef FUNC_NAME
/* Set the value returned by program-arguments, given ARGC and ARGV.
If FIRST is non-zero, make it the first element; we do this in
situations where other code (like getopt) has parsed out a few
arguments, but we still want the script name to be the first
element. */
void
scm_set_program_arguments (int argc, char **argv, char *first)
{
SCM args = scm_makfromstrs (argc, argv);
if (first)
args = scm_cons (scm_from_locale_string (first), args);
scm_fluid_set_x (scm_program_arguments_fluid, args);
}
SCM_DEFINE (scm_set_program_arguments_scm, "set-program-arguments", 1, 0, 0,
(SCM lst),
"Set the command line arguments to be returned by\n"
"@code{program-arguments} (and @code{command-line}). @var{lst}\n"
"should be a list of strings, the first of which is the program\n"
"name (either a script name, or just @code{\"guile\"}).\n"
"\n"
"Program arguments are held in a fluid and therefore have a\n"
"separate value in each Guile thread. Neither the list nor the\n"
"strings within it are copied, so should not be modified later.")
#define FUNC_NAME s_scm_set_program_arguments_scm
{
return scm_fluid_set_x (scm_program_arguments_fluid, lst);
}
#undef FUNC_NAME
void
scm_init_feature()
{
scm_program_arguments_fluid = scm_make_fluid ();
features_var = scm_c_define ("*features*", SCM_EOL);
#ifndef _Windows
scm_add_feature("system");
#endif
#ifndef GO32
scm_add_feature("char-ready?");
#endif
#if SCM_USE_PTHREAD_THREADS
scm_add_feature ("threads");
#endif
#include "feature.x"
}
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