1 /* Copyright (C) 1995,1996,1998,1999,2000,2001,2002, 2003, 2004, 2006, 2007 Free Software Foundation, Inc.
3 * This library is free software; you can redistribute it and/or
4 * modify it under the terms of the GNU Lesser General Public
5 * License as published by the Free Software Foundation; either
6 * version 2.1 of the License, or (at your option) any later version.
8 * This library is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 * Lesser General Public License for more details.
13 * You should have received a copy of the GNU Lesser General Public
14 * License along with this library; if not, write to the Free Software
15 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
28 #include "libguile/_scm.h"
29 #include "libguile/root.h"
30 #include "libguile/strings.h"
31 #include "libguile/validate.h"
32 #include "libguile/fluids.h"
34 #include "libguile/feature.h"
38 static SCM progargs_fluid;
39 static SCM features_var;
42 scm_add_feature (const char *str)
44 SCM old = SCM_VARIABLE_REF (features_var);
45 SCM new = scm_cons (scm_from_locale_symbol (str), old);
46 SCM_VARIABLE_SET (features_var, new);
51 SCM_DEFINE (scm_program_arguments, "program-arguments", 0, 0, 0,
53 "@deffnx {Scheme Procedure} command-line\n"
54 "Return the list of command line arguments passed to Guile, as a list of\n"
55 "strings. The list includes the invoked program name, which is usually\n"
56 "@code{\"guile\"}, but excludes switches and parameters for command line\n"
57 "options like @code{-e} and @code{-l}.")
58 #define FUNC_NAME s_scm_program_arguments
60 return scm_fluid_ref (progargs_fluid);
64 /* Set the value returned by program-arguments, given ARGC and ARGV.
66 If FIRST is non-zero, make it the first element; we do this in
67 situations where other code (like getopt) has parsed out a few
68 arguments, but we still want the script name to be the first
71 scm_set_program_arguments (int argc, char **argv, char *first)
73 SCM args = scm_makfromstrs (argc, argv);
75 args = scm_cons (scm_from_locale_string (first), args);
76 scm_fluid_set_x (progargs_fluid, args);
79 SCM_DEFINE (scm_set_program_arguments_scm, "set-program-arguments", 1, 0, 0,
81 "Set the command line arguments to be returned by\n"
82 "@code{program-arguments} (and @code{command-line}). @var{lst}\n"
83 "should be a list of strings, the first of which is the program\n"
84 "name (either a script name, or just @code{\"guile\"}).\n"
86 "Program arguments are held in a fluid and therefore have a\n"
87 "separate value in each Guile thread. Neither the list nor the\n"
88 "strings within it are copied, so should not be modified later.")
89 #define FUNC_NAME s_scm_set_program_arguments_scm
91 return scm_fluid_set_x (progargs_fluid, lst);
101 progargs_fluid = scm_permanent_object (scm_make_fluid ());
103 features_var = scm_c_define ("*features*", SCM_EOL);
105 scm_add_feature("system");
108 scm_add_feature(s_ed);
111 scm_add_feature("sicp");
114 scm_add_feature("char-ready?");
116 #ifndef CHEAP_CONTINUATIONS
117 scm_add_feature ("full-continuation");
119 #if SCM_USE_PTHREAD_THREADS
120 scm_add_feature ("threads");
123 scm_c_define ("char-code-limit", scm_from_int (SCM_CHAR_CODE_LIMIT));
125 #include "libguile/feature.x"