1 /* Copyright (C) 1995, 1996, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
2 * 2006, 2007, 2009, 2011, 2013 Free Software Foundation, Inc.
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.
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.
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
30 #include "libguile/_scm.h"
31 #include "libguile/root.h"
32 #include "libguile/strings.h"
33 #include "libguile/validate.h"
34 #include "libguile/fluids.h"
36 #include "libguile/feature.h"
40 SCM scm_program_arguments_fluid
;
42 static SCM features_var
;
45 scm_add_feature (const char *str
)
47 SCM old
= SCM_VARIABLE_REF (features_var
);
48 SCM
new = scm_cons (scm_from_utf8_symbol (str
), old
);
49 SCM_VARIABLE_SET (features_var
, new);
54 SCM_DEFINE (scm_program_arguments
, "program-arguments", 0, 0, 0,
56 "@deffnx {Scheme Procedure} command-line\n"
57 "Return the list of command line arguments passed to Guile, as a list of\n"
58 "strings. The list includes the invoked program name, which is usually\n"
59 "@code{\"guile\"}, but excludes switches and parameters for command line\n"
60 "options like @code{-e} and @code{-l}.")
61 #define FUNC_NAME s_scm_program_arguments
63 return scm_fluid_ref (scm_program_arguments_fluid
);
67 /* Set the value returned by program-arguments, given ARGC and ARGV.
69 If FIRST is non-zero, make it the first element; we do this in
70 situations where other code (like getopt) has parsed out a few
71 arguments, but we still want the script name to be the first
74 scm_set_program_arguments (int argc
, char **argv
, char *first
)
76 SCM args
= scm_makfromstrs (argc
, argv
);
78 args
= scm_cons (scm_from_locale_string (first
), args
);
79 scm_fluid_set_x (scm_program_arguments_fluid
, args
);
82 SCM_DEFINE (scm_set_program_arguments_scm
, "set-program-arguments", 1, 0, 0,
84 "Set the command line arguments to be returned by\n"
85 "@code{program-arguments} (and @code{command-line}). @var{lst}\n"
86 "should be a list of strings, the first of which is the program\n"
87 "name (either a script name, or just @code{\"guile\"}).\n"
89 "Program arguments are held in a fluid and therefore have a\n"
90 "separate value in each Guile thread. Neither the list nor the\n"
91 "strings within it are copied, so should not be modified later.")
92 #define FUNC_NAME s_scm_set_program_arguments_scm
94 return scm_fluid_set_x (scm_program_arguments_fluid
, lst
);
104 scm_program_arguments_fluid
= scm_make_fluid ();
106 features_var
= scm_c_define ("*features*", SCM_EOL
);
108 scm_add_feature("system");
111 scm_add_feature(s_ed
);
114 scm_add_feature("char-ready?");
116 #if SCM_USE_PTHREAD_THREADS
117 scm_add_feature ("threads");
120 #include "libguile/feature.x"