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7dc6e754 | 1 | /* Copyright (C) 1995,1996,1997,1998 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 | |
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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 | ||
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45 | \f |
46 | ||
47 | #include <stdio.h> | |
48 | #include "_scm.h" | |
95b88819 | 49 | |
20e6290e | 50 | #include "scmsigs.h" |
1bbd0b84 GB |
51 | |
52 | #include "scm_validate.h" | |
20e6290e JB |
53 | #include "simpos.h" |
54 | ||
95b88819 GH |
55 | #ifdef HAVE_STRING_H |
56 | #include <string.h> | |
57 | #endif | |
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58 | #ifdef HAVE_UNISTD_H |
59 | #include <unistd.h> | |
60 | #endif | |
61 | ||
62 | \f | |
63 | extern int system(); | |
64 | \f | |
65 | ||
3b3b36dd | 66 | SCM_DEFINE (scm_system, "system", 0, 1, 0, |
1bbd0b84 | 67 | (SCM cmd), |
4079f87e GB |
68 | "Executes @var{cmd} using the operating system's "command processor". |
69 | Under Unix this is usually the default shell @code{sh}. The value | |
70 | returned is @var{cmd}'s exit status as returned by @code{waitpid}, which | |
71 | can be interpreted using the functions above. | |
72 | ||
73 | If @code{system} is called without arguments, it returns a boolean | |
74 | indicating whether the command processor is available.") | |
1bbd0b84 | 75 | #define FUNC_NAME s_scm_system |
0f2d19dd | 76 | { |
341eaef0 GH |
77 | int rv; |
78 | ||
79 | if (SCM_UNBNDP (cmd)) | |
80 | { | |
81 | #ifdef HAVE_SYSTEM | |
82 | rv = system (NULL); | |
83 | #else | |
84 | rv = 0; | |
85 | #endif | |
1bbd0b84 | 86 | return SCM_BOOL(rv); |
341eaef0 | 87 | } |
3b3b36dd | 88 | SCM_VALIDATE_ROSTRING (1,cmd); |
341eaef0 GH |
89 | #ifdef HAVE_SYSTEM |
90 | SCM_DEFER_INTS; | |
91 | errno = 0; | |
0f2d19dd JB |
92 | if (SCM_ROSTRINGP (cmd)) |
93 | cmd = scm_makfromstr (SCM_ROCHARS (cmd), SCM_ROLENGTH (cmd), 0); | |
341eaef0 GH |
94 | rv = system(SCM_ROCHARS(cmd)); |
95 | if (rv == -1 || (rv == 127 && errno != 0)) | |
1bbd0b84 | 96 | SCM_SYSERROR; |
341eaef0 GH |
97 | SCM_ALLOW_INTS; |
98 | return SCM_MAKINUM (rv); | |
99 | #else | |
1bbd0b84 | 100 | SCM_SYSMISSING; |
0f2d19dd | 101 | #endif |
341eaef0 | 102 | } |
1bbd0b84 | 103 | #undef FUNC_NAME |
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104 | |
105 | extern char *getenv(); | |
a1ec6916 | 106 | SCM_DEFINE (scm_getenv, "getenv", 1, 0, 0, |
1bbd0b84 | 107 | (SCM nam), |
4079f87e GB |
108 | "Looks up the string @var{name} in the current environment. The return |
109 | value is @code{#f} unless a string of the form @code{NAME=VALUE} is | |
110 | found, in which case the string @code{VALUE} is | |
111 | returned.") | |
1bbd0b84 | 112 | #define FUNC_NAME s_scm_getenv |
0f2d19dd JB |
113 | { |
114 | char *val; | |
3b3b36dd | 115 | SCM_VALIDATE_ROSTRING (1,nam); |
1bbd0b84 | 116 | nam = scm_makfromstr (SCM_ROCHARS (nam), SCM_ROLENGTH (nam), 0); |
0f2d19dd | 117 | val = getenv(SCM_CHARS(nam)); |
9373b387 | 118 | return (val) ? scm_makfromstr(val, (scm_sizet)strlen(val), 0) : SCM_BOOL_F; |
0f2d19dd | 119 | } |
1bbd0b84 | 120 | #undef FUNC_NAME |
0f2d19dd | 121 | |
ee149d03 | 122 | /* simple exit, without unwinding the scheme stack or flushing ports. */ |
a1ec6916 | 123 | SCM_DEFINE (scm_primitive_exit, "primitive-exit", 0, 1, 0, |
1bbd0b84 | 124 | (SCM status), |
4079f87e GB |
125 | "Terminate the current process without unwinding the Scheme stack. |
126 | This is would typically be useful after a fork. The exit status | |
127 | is @var{status} if supplied, otherwise zero.") | |
1bbd0b84 | 128 | #define FUNC_NAME s_scm_primitive_exit |
7ad3c1e7 GH |
129 | { |
130 | int cstatus = 0; | |
131 | if (!SCM_UNBNDP (status)) | |
132 | { | |
3b3b36dd | 133 | SCM_VALIDATE_INUM (1,status); |
7ad3c1e7 GH |
134 | cstatus = SCM_INUM (status); |
135 | } | |
136 | exit (cstatus); | |
137 | } | |
1bbd0b84 | 138 | #undef FUNC_NAME |
7ad3c1e7 | 139 | |
1cc91f1b | 140 | |
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141 | void |
142 | scm_init_simpos () | |
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143 | { |
144 | #include "simpos.x" | |
145 | } | |
146 |