libguile/simpos.c

   1 /*      Copyright (C) 1995,1996 Free Software Foundation, Inc.
   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
  15  * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
  16  *
  17  * As a special exception, the Free Software Foundation gives permission
  18  * for additional uses of the text contained in its release of GUILE.
  19  *
  20  * The exception is that, if you link the GUILE library with other files
  21  * to produce an executable, this does not by itself cause the
  22  * resulting executable to be covered by the GNU General Public License.
  23  * Your use of that executable is in no way restricted on account of
  24  * linking the GUILE library code into it.
  25  *
  26  * This exception does not however invalidate any other reasons why
  27  * the executable file might be covered by the GNU General Public License.
  28  *
  29  * This exception applies only to the code released by the
  30  * Free Software Foundation under the name GUILE.  If you copy
  31  * code from other Free Software Foundation releases into a copy of
  32  * GUILE, as the General Public License permits, the exception does
  33  * not apply to the code that you add in this way.  To avoid misleading
  34  * anyone as to the status of such modified files, you must delete
  35  * this exception notice from them.
  36  *
  37  * If you write modifications of your own for GUILE, it is your choice
  38  * whether to permit this exception to apply to your modifications.
  39  * If you do not wish that, delete this exception notice.
  40  */
  41 \f
  42
  43 #include <stdio.h>
  44 #include "_scm.h"
  45
  46 #include "scmsigs.h"
  47 #include "simpos.h"
  48
  49 #ifdef HAVE_STRING_H
  50 #include <string.h>
  51 #endif
  52 #ifdef HAVE_UNISTD_H
  53 #include <unistd.h>
  54 #endif
  55
  56 \f
  57 extern int system();
  58 \f
  59
  60 #ifndef _Windows
  61 SCM_PROC(s_system, "system", 1, 0, 0, scm_system);
  62
  63 SCM
  64 scm_system(cmd)
  65      SCM cmd;
  66 {
  67   SCM_ASSERT(SCM_NIMP(cmd) && SCM_ROSTRINGP(cmd), cmd, SCM_ARG1, s_system);
  68   if (SCM_ROSTRINGP (cmd))
  69     cmd = scm_makfromstr (SCM_ROCHARS (cmd), SCM_ROLENGTH (cmd), 0);
  70   scm_ignore_signals();
  71 # ifdef AZTEC_C
  72   cmd = SCM_MAKINUM(Execute(SCM_ROCHARS(cmd), 0, 0));
  73 # else
  74   cmd = SCM_MAKINUM(0L+system(SCM_ROCHARS(cmd)));
  75 # endif
  76   scm_unignore_signals();
  77   return cmd;
  78 }
  79 #endif
  80
  81 extern char *getenv();
  82 SCM_PROC (s_getenv, "getenv", 1, 0, 0, scm_getenv);
  83
  84 SCM
  85 scm_getenv(nam)
  86      SCM nam;
  87 {
  88   char *val;
  89   SCM_ASSERT(SCM_NIMP(nam) && SCM_ROSTRINGP(nam), nam, SCM_ARG1, s_getenv);
  90   if (SCM_ROSTRINGP (nam))
  91     nam = scm_makfromstr (SCM_ROCHARS (nam), SCM_ROLENGTH (nam), 0);
  92   val = getenv(SCM_CHARS(nam));
  93   if (!val)
  94     {
  95       /* This isn't a system error (errno won't be set), but is still
  96          treated as an exceptional condition, since getenv normally
  97          returns a string.  Can easily do (false-if-exception (getenv ...))
  98          to catch the exception.
  99          */
 100       scm_misc_error (s_getenv, "%S not found in environment",
 101                       scm_listify (nam, SCM_UNDEFINED));
 102     }
 103   return scm_makfromstr(val, (scm_sizet)strlen(val), 0);
 104 }
 105
 106 #ifdef vms
 107 # define SYSTNAME "VMS"
 108 #endif
 109 #ifdef unix
 110 # define SYSTNAME "UNIX"
 111 #endif
 112 #ifdef MWC
 113 # define SYSTNAME "COHERENT"
 114 #endif
 115 #ifdef _Windows
 116 # define SYSTNAME "WINDOWS"
 117 #else
 118 # ifdef MSDOS
 119 #  define SYSTNAME "MS-DOS"
 120 # endif
 121 #endif
 122 #ifdef __EMX__
 123 # define SYSTNAME "OS/2"
 124 #endif
 125 #ifdef __IBMC__
 126 # define SYSTNAME "OS/2"
 127 #endif
 128 #ifdef THINK_C
 129 # define SYSTNAME "THINKC"
 130 #endif
 131 #ifdef AMIGA
 132 # define SYSTNAME "AMIGA"
 133 #endif
 134 #ifdef atarist
 135 # define SYSTNAME "ATARIST"
 136 #endif
 137 #ifdef mach
 138 # define SYSTNAME "MACH"
 139 #endif
 140 #ifdef ARM_ULIB
 141 # define SYSTNAME "ACORN"
 142 #endif
 143
 144 SCM_PROC(s_software_type, "software-type", 0, 0, 0, scm_software_type);
 145
 146 SCM
 147 scm_software_type()
 148 {
 149 #ifdef nosve
 150   return SCM_CAR(scm_intern("nosve", 5));
 151 #else
 152   return SCM_CAR(scm_intern(SYSTNAME, sizeof SYSTNAME/sizeof(char) -1));
 153 #endif
 154 }
 155
 156
 157 void
 158 scm_init_simpos ()
 159 {
 160 #include "simpos.x"
 161 }
 162