| 1 | /* Copyright (C) 1995, 1996, 1998, 1999, 2000, 2001, 2002, 2003, 2004, |
| 2 | * 2006, 2007, 2009, 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 | |
| 21 | \f |
| 22 | #ifdef HAVE_CONFIG_H |
| 23 | # include <config.h> |
| 24 | #endif |
| 25 | |
| 26 | #ifdef HAVE_STRING_H |
| 27 | #include <string.h> |
| 28 | #endif |
| 29 | |
| 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" |
| 35 | |
| 36 | #include "libguile/feature.h" |
| 37 | |
| 38 | \f |
| 39 | |
| 40 | SCM scm_program_arguments_fluid; |
| 41 | |
| 42 | static SCM features_var; |
| 43 | |
| 44 | void |
| 45 | scm_add_feature (const char *str) |
| 46 | { |
| 47 | SCM old = SCM_VARIABLE_REF (features_var); |
| 48 | SCM new = scm_cons (scm_from_locale_symbol (str), old); |
| 49 | SCM_VARIABLE_SET (features_var, new); |
| 50 | } |
| 51 | |
| 52 | \f |
| 53 | |
| 54 | SCM_DEFINE (scm_program_arguments, "program-arguments", 0, 0, 0, |
| 55 | (), |
| 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 |
| 62 | { |
| 63 | return scm_fluid_ref (scm_program_arguments_fluid); |
| 64 | } |
| 65 | #undef FUNC_NAME |
| 66 | |
| 67 | /* Set the value returned by program-arguments, given ARGC and ARGV. |
| 68 | |
| 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 |
| 72 | element. */ |
| 73 | void |
| 74 | scm_set_program_arguments (int argc, char **argv, char *first) |
| 75 | { |
| 76 | SCM args = scm_makfromstrs (argc, argv); |
| 77 | if (first) |
| 78 | args = scm_cons (scm_from_locale_string (first), args); |
| 79 | scm_fluid_set_x (scm_program_arguments_fluid, args); |
| 80 | } |
| 81 | |
| 82 | SCM_DEFINE (scm_set_program_arguments_scm, "set-program-arguments", 1, 0, 0, |
| 83 | (SCM lst), |
| 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" |
| 88 | "\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 |
| 93 | { |
| 94 | return scm_fluid_set_x (scm_program_arguments_fluid, lst); |
| 95 | } |
| 96 | #undef FUNC_NAME |
| 97 | |
| 98 | |
| 99 | \f |
| 100 | |
| 101 | void |
| 102 | scm_init_feature() |
| 103 | { |
| 104 | scm_program_arguments_fluid = scm_make_fluid (); |
| 105 | |
| 106 | features_var = scm_c_define ("*features*", SCM_EOL); |
| 107 | #ifndef _Windows |
| 108 | scm_add_feature("system"); |
| 109 | #endif |
| 110 | #ifdef vms |
| 111 | scm_add_feature(s_ed); |
| 112 | #endif |
| 113 | #ifdef SICP |
| 114 | scm_add_feature("sicp"); |
| 115 | #endif |
| 116 | #ifndef GO32 |
| 117 | scm_add_feature("char-ready?"); |
| 118 | #endif |
| 119 | #ifndef CHEAP_CONTINUATIONS |
| 120 | scm_add_feature ("full-continuation"); |
| 121 | #endif |
| 122 | #if SCM_USE_PTHREAD_THREADS |
| 123 | scm_add_feature ("threads"); |
| 124 | #endif |
| 125 | |
| 126 | #include "libguile/feature.x" |
| 127 | } |
| 128 | |
| 129 | /* |
| 130 | Local Variables: |
| 131 | c-file-style: "gnu" |
| 132 | End: |
| 133 | */ |