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36284627 | 1 | /* Copyright (C) 1995,1996,1997,1998,2000,2001 Free Software Foundation, Inc. |
0f2d19dd JB |
2 | * |
3 | * This program is free software; you can redistribute it and/or modify | |
4 | * it under the terms of the GNU General Public License as published by | |
5 | * the Free Software Foundation; either version 2, or (at your option) | |
6 | * any later version. | |
7 | * | |
8 | * This program 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 | |
11 | * GNU General Public License for more details. | |
12 | * | |
13 | * You should have received a copy of the GNU General Public License | |
14 | * along with this software; see the file COPYING. If not, write to | |
82892bed JB |
15 | * the Free Software Foundation, Inc., 59 Temple Place, Suite 330, |
16 | * Boston, MA 02111-1307 USA | |
0f2d19dd JB |
17 | * |
18 | * As a special exception, the Free Software Foundation gives permission | |
19 | * for additional uses of the text contained in its release of GUILE. | |
20 | * | |
21 | * The exception is that, if you link the GUILE library with other files | |
22 | * to produce an executable, this does not by itself cause the | |
23 | * resulting executable to be covered by the GNU General Public License. | |
24 | * Your use of that executable is in no way restricted on account of | |
25 | * linking the GUILE library code into it. | |
26 | * | |
27 | * This exception does not however invalidate any other reasons why | |
28 | * the executable file might be covered by the GNU General Public License. | |
29 | * | |
30 | * This exception applies only to the code released by the | |
31 | * Free Software Foundation under the name GUILE. If you copy | |
32 | * code from other Free Software Foundation releases into a copy of | |
33 | * GUILE, as the General Public License permits, the exception does | |
34 | * not apply to the code that you add in this way. To avoid misleading | |
35 | * anyone as to the status of such modified files, you must delete | |
36 | * this exception notice from them. | |
37 | * | |
38 | * If you write modifications of your own for GUILE, it is your choice | |
39 | * whether to permit this exception to apply to your modifications. | |
82892bed | 40 | * If you do not wish that, delete this exception notice. */ |
1bbd0b84 GB |
41 | |
42 | /* Software engineering face-lift by Greg J. Badros, 11-Dec-1999, | |
43 | gjb@cs.washington.edu, http://www.cs.washington.edu/homes/gjb */ | |
44 | ||
0f2d19dd JB |
45 | \f |
46 | ||
e6e2e95a MD |
47 | #include <errno.h> |
48 | ||
a0599745 | 49 | #include "libguile/_scm.h" |
95b88819 | 50 | |
a0599745 MD |
51 | #include "libguile/scmsigs.h" |
52 | #include "libguile/strings.h" | |
1bbd0b84 | 53 | |
a0599745 MD |
54 | #include "libguile/validate.h" |
55 | #include "libguile/simpos.h" | |
20e6290e | 56 | |
95b88819 GH |
57 | #ifdef HAVE_STRING_H |
58 | #include <string.h> | |
59 | #endif | |
0f2d19dd JB |
60 | #ifdef HAVE_UNISTD_H |
61 | #include <unistd.h> | |
62 | #endif | |
63 | ||
64 | \f | |
65 | extern int system(); | |
66 | \f | |
67 | ||
f25f761d | 68 | #ifdef HAVE_SYSTEM |
3b3b36dd | 69 | SCM_DEFINE (scm_system, "system", 0, 1, 0, |
1bbd0b84 | 70 | (SCM cmd), |
1e6808ea MG |
71 | "Execute @var{cmd} using the operating system's \"command\n" |
72 | "processor\". Under Unix this is usually the default shell\n" | |
73 | "@code{sh}. The value returned is @var{cmd}'s exit status as\n" | |
74 | "returned by @code{waitpid}, which can be interpreted using the\n" | |
75 | "functions above.\n" | |
76 | "\n" | |
77 | "If @code{system} is called without arguments, return a boolean\n" | |
d3818c29 | 78 | "indicating whether the command processor is available.") |
1bbd0b84 | 79 | #define FUNC_NAME s_scm_system |
0f2d19dd | 80 | { |
341eaef0 GH |
81 | int rv; |
82 | ||
83 | if (SCM_UNBNDP (cmd)) | |
84 | { | |
341eaef0 | 85 | rv = system (NULL); |
1bbd0b84 | 86 | return SCM_BOOL(rv); |
341eaef0 | 87 | } |
a6d9e5ab | 88 | SCM_VALIDATE_STRING (1, cmd); |
341eaef0 GH |
89 | SCM_DEFER_INTS; |
90 | errno = 0; | |
a6d9e5ab DH |
91 | SCM_STRING_COERCE_0TERMINATION_X (cmd); |
92 | rv = system (SCM_STRING_CHARS (cmd)); | |
341eaef0 | 93 | if (rv == -1 || (rv == 127 && errno != 0)) |
1bbd0b84 | 94 | SCM_SYSERROR; |
341eaef0 GH |
95 | SCM_ALLOW_INTS; |
96 | return SCM_MAKINUM (rv); | |
341eaef0 | 97 | } |
1bbd0b84 | 98 | #undef FUNC_NAME |
f25f761d | 99 | #endif /* HAVE_SYSTEM */ |
0f2d19dd JB |
100 | |
101 | extern char *getenv(); | |
a1ec6916 | 102 | SCM_DEFINE (scm_getenv, "getenv", 1, 0, 0, |
1bbd0b84 | 103 | (SCM nam), |
d3818c29 MD |
104 | "Looks up the string @var{name} in the current environment. The return\n" |
105 | "value is @code{#f} unless a string of the form @code{NAME=VALUE} is\n" | |
d46e4713 | 106 | "found, in which case the string @code{VALUE} is returned.") |
1bbd0b84 | 107 | #define FUNC_NAME s_scm_getenv |
0f2d19dd JB |
108 | { |
109 | char *val; | |
a6d9e5ab DH |
110 | SCM_VALIDATE_STRING (1, nam); |
111 | SCM_STRING_COERCE_0TERMINATION_X (nam); | |
86c991c2 | 112 | val = getenv (SCM_STRING_CHARS (nam)); |
36284627 | 113 | return val ? scm_mem2string (val, strlen (val)) : SCM_BOOL_F; |
0f2d19dd | 114 | } |
1bbd0b84 | 115 | #undef FUNC_NAME |
0f2d19dd | 116 | |
ee149d03 | 117 | /* simple exit, without unwinding the scheme stack or flushing ports. */ |
a1ec6916 | 118 | SCM_DEFINE (scm_primitive_exit, "primitive-exit", 0, 1, 0, |
1bbd0b84 | 119 | (SCM status), |
d3818c29 MD |
120 | "Terminate the current process without unwinding the Scheme stack.\n" |
121 | "This is would typically be useful after a fork. The exit status\n" | |
122 | "is @var{status} if supplied, otherwise zero.") | |
1bbd0b84 | 123 | #define FUNC_NAME s_scm_primitive_exit |
7ad3c1e7 GH |
124 | { |
125 | int cstatus = 0; | |
126 | if (!SCM_UNBNDP (status)) | |
127 | { | |
3b3b36dd | 128 | SCM_VALIDATE_INUM (1,status); |
7ad3c1e7 GH |
129 | cstatus = SCM_INUM (status); |
130 | } | |
131 | exit (cstatus); | |
132 | } | |
1bbd0b84 | 133 | #undef FUNC_NAME |
7ad3c1e7 | 134 | |
1cc91f1b | 135 | |
0f2d19dd JB |
136 | void |
137 | scm_init_simpos () | |
0f2d19dd | 138 | { |
8dc9439f | 139 | #ifndef SCM_MAGIC_SNARFER |
a0599745 | 140 | #include "libguile/simpos.x" |
8dc9439f | 141 | #endif |
0f2d19dd JB |
142 | } |
143 | ||
89e00824 ML |
144 | |
145 | /* | |
146 | Local Variables: | |
147 | c-file-style: "gnu" | |
148 | End: | |
149 | */ |