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f2c9fcb0 | 1 | /* Copyright (C) 1995,1996,1997,1998, 2000 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 | ||
47 | #include <stdio.h> | |
a0599745 | 48 | #include "libguile/_scm.h" |
95b88819 | 49 | |
a0599745 MD |
50 | #include "libguile/scmsigs.h" |
51 | #include "libguile/strings.h" | |
1bbd0b84 | 52 | |
a0599745 MD |
53 | #include "libguile/validate.h" |
54 | #include "libguile/simpos.h" | |
20e6290e | 55 | |
95b88819 GH |
56 | #ifdef HAVE_STRING_H |
57 | #include <string.h> | |
58 | #endif | |
0f2d19dd JB |
59 | #ifdef HAVE_UNISTD_H |
60 | #include <unistd.h> | |
61 | #endif | |
62 | ||
63 | \f | |
64 | extern int system(); | |
65 | \f | |
66 | ||
f25f761d | 67 | #ifdef HAVE_SYSTEM |
3b3b36dd | 68 | SCM_DEFINE (scm_system, "system", 0, 1, 0, |
1bbd0b84 | 69 | (SCM cmd), |
d3818c29 MD |
70 | "Executes @var{cmd} using the operating system's \"command processor\".\n" |
71 | "Under Unix this is usually the default shell @code{sh}. The value\n" | |
72 | "returned is @var{cmd}'s exit status as returned by @code{waitpid}, which\n" | |
73 | "can be interpreted using the functions above.\n\n" | |
74 | "If @code{system} is called without arguments, it returns a boolean\n" | |
75 | "indicating whether the command processor is available.") | |
1bbd0b84 | 76 | #define FUNC_NAME s_scm_system |
0f2d19dd | 77 | { |
341eaef0 GH |
78 | int rv; |
79 | ||
80 | if (SCM_UNBNDP (cmd)) | |
81 | { | |
341eaef0 | 82 | rv = system (NULL); |
1bbd0b84 | 83 | return SCM_BOOL(rv); |
341eaef0 | 84 | } |
3b3b36dd | 85 | SCM_VALIDATE_ROSTRING (1,cmd); |
341eaef0 GH |
86 | SCM_DEFER_INTS; |
87 | errno = 0; | |
d1ca2c64 DH |
88 | if (SCM_SUBSTRP (cmd)) |
89 | cmd = scm_makfromstr (SCM_ROCHARS (cmd), SCM_STRING_LENGTH (cmd), 0); | |
341eaef0 GH |
90 | rv = system(SCM_ROCHARS(cmd)); |
91 | if (rv == -1 || (rv == 127 && errno != 0)) | |
1bbd0b84 | 92 | SCM_SYSERROR; |
341eaef0 GH |
93 | SCM_ALLOW_INTS; |
94 | return SCM_MAKINUM (rv); | |
341eaef0 | 95 | } |
1bbd0b84 | 96 | #undef FUNC_NAME |
f25f761d | 97 | #endif /* HAVE_SYSTEM */ |
0f2d19dd JB |
98 | |
99 | extern char *getenv(); | |
a1ec6916 | 100 | SCM_DEFINE (scm_getenv, "getenv", 1, 0, 0, |
1bbd0b84 | 101 | (SCM nam), |
d3818c29 MD |
102 | "Looks up the string @var{name} in the current environment. The return\n" |
103 | "value is @code{#f} unless a string of the form @code{NAME=VALUE} is\n" | |
d46e4713 | 104 | "found, in which case the string @code{VALUE} is returned.") |
1bbd0b84 | 105 | #define FUNC_NAME s_scm_getenv |
0f2d19dd JB |
106 | { |
107 | char *val; | |
3b3b36dd | 108 | SCM_VALIDATE_ROSTRING (1,nam); |
1bbd0b84 | 109 | nam = scm_makfromstr (SCM_ROCHARS (nam), SCM_ROLENGTH (nam), 0); |
86c991c2 | 110 | val = getenv (SCM_STRING_CHARS (nam)); |
9373b387 | 111 | return (val) ? scm_makfromstr(val, (scm_sizet)strlen(val), 0) : SCM_BOOL_F; |
0f2d19dd | 112 | } |
1bbd0b84 | 113 | #undef FUNC_NAME |
0f2d19dd | 114 | |
ee149d03 | 115 | /* simple exit, without unwinding the scheme stack or flushing ports. */ |
a1ec6916 | 116 | SCM_DEFINE (scm_primitive_exit, "primitive-exit", 0, 1, 0, |
1bbd0b84 | 117 | (SCM status), |
d3818c29 MD |
118 | "Terminate the current process without unwinding the Scheme stack.\n" |
119 | "This is would typically be useful after a fork. The exit status\n" | |
120 | "is @var{status} if supplied, otherwise zero.") | |
1bbd0b84 | 121 | #define FUNC_NAME s_scm_primitive_exit |
7ad3c1e7 GH |
122 | { |
123 | int cstatus = 0; | |
124 | if (!SCM_UNBNDP (status)) | |
125 | { | |
3b3b36dd | 126 | SCM_VALIDATE_INUM (1,status); |
7ad3c1e7 GH |
127 | cstatus = SCM_INUM (status); |
128 | } | |
129 | exit (cstatus); | |
130 | } | |
1bbd0b84 | 131 | #undef FUNC_NAME |
7ad3c1e7 | 132 | |
1cc91f1b | 133 | |
0f2d19dd JB |
134 | void |
135 | scm_init_simpos () | |
0f2d19dd | 136 | { |
a0599745 | 137 | #include "libguile/simpos.x" |
0f2d19dd JB |
138 | } |
139 | ||
89e00824 ML |
140 | |
141 | /* | |
142 | Local Variables: | |
143 | c-file-style: "gnu" | |
144 | End: | |
145 | */ |