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341eaef04b
* configure.in: AC_CHECK_FUNCS: add "system". * simpos.c (scm_system): always define: use sysmissing if not available. Check for HAVE_SYSTEM instead of _Windows (does Windows lack system or does it have an unusable one?). Check for error conditions -1 and 127. Use SCM_DEFER_INTS. Let the argument be optional: if not supplied, call system(NULL). * ports.c (scm_close_port): relax the type check from OPPORTP to PORTP; closing a closed port is allowed.
187 lines
4.9 KiB
C
187 lines
4.9 KiB
C
/* Copyright (C) 1995,1996,1997 Free Software Foundation, Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this software; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
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* Boston, MA 02111-1307 USA
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*
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* As a special exception, the Free Software Foundation gives permission
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* for additional uses of the text contained in its release of GUILE.
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*
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* The exception is that, if you link the GUILE library with other files
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* to produce an executable, this does not by itself cause the
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* resulting executable to be covered by the GNU General Public License.
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* Your use of that executable is in no way restricted on account of
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* linking the GUILE library code into it.
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*
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* This exception does not however invalidate any other reasons why
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* the executable file might be covered by the GNU General Public License.
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*
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* This exception applies only to the code released by the
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* Free Software Foundation under the name GUILE. If you copy
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* code from other Free Software Foundation releases into a copy of
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* GUILE, as the General Public License permits, the exception does
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* not apply to the code that you add in this way. To avoid misleading
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* anyone as to the status of such modified files, you must delete
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* this exception notice from them.
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*
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* If you write modifications of your own for GUILE, it is your choice
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* whether to permit this exception to apply to your modifications.
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* If you do not wish that, delete this exception notice. */
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#include <stdio.h>
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#include "_scm.h"
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#include "scmsigs.h"
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#include "simpos.h"
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#ifdef HAVE_STRING_H
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#include <string.h>
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#endif
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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extern int system();
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SCM_PROC(s_system, "system", 0, 1, 0, scm_system);
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SCM
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scm_system(cmd)
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SCM cmd;
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{
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int rv;
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if (SCM_UNBNDP (cmd))
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{
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#ifdef HAVE_SYSTEM
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rv = system (NULL);
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#else
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rv = 0;
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#endif
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return rv ? SCM_BOOL_T : SCM_BOOL_F;
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}
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SCM_ASSERT(SCM_NIMP(cmd) && SCM_ROSTRINGP(cmd), cmd, SCM_ARG1, s_system);
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#ifdef HAVE_SYSTEM
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SCM_DEFER_INTS;
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errno = 0;
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if (SCM_ROSTRINGP (cmd))
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cmd = scm_makfromstr (SCM_ROCHARS (cmd), SCM_ROLENGTH (cmd), 0);
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rv = system(SCM_ROCHARS(cmd));
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if (rv == -1 || (rv == 127 && errno != 0))
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scm_syserror (s_system);
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SCM_ALLOW_INTS;
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return SCM_MAKINUM (rv);
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#else
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scm_sysmissing (s_system);
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#endif
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}
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extern char *getenv();
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SCM_PROC (s_getenv, "getenv", 1, 0, 0, scm_getenv);
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SCM
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scm_getenv(nam)
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SCM nam;
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{
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char *val;
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SCM_ASSERT(SCM_NIMP(nam) && SCM_ROSTRINGP(nam), nam, SCM_ARG1, s_getenv);
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if (SCM_ROSTRINGP (nam))
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nam = scm_makfromstr (SCM_ROCHARS (nam), SCM_ROLENGTH (nam), 0);
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val = getenv(SCM_CHARS(nam));
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return (val) ? scm_makfromstr(val, (scm_sizet)strlen(val), 0) : SCM_BOOL_F;
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}
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SCM_PROC (s_primitive_exit, "primitive-exit", 0, 1, 0, scm_primitive_exit);
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SCM
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scm_primitive_exit (SCM status)
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{
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int cstatus = 0;
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if (!SCM_UNBNDP (status))
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{
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SCM_ASSERT (SCM_INUMP (status), status, SCM_ARG1, s_primitive_exit);
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cstatus = SCM_INUM (status);
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}
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exit (cstatus);
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}
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/* I have a feeling this whole arrangement below is a bad idea. One
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should always test for the presence or absence of a particular
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feature, instead of checking the system name. Older versions of a
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system may lack features posessed by new ones, and a feature
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appearing on one system will soon appear on others. And autoconf
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provides the mechanisms for detecting features. -JimB */
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#ifdef _AIX
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# define SYSTNAME "AIX"
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#endif
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#ifdef vms
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# define SYSTNAME "VMS"
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#endif
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#if defined (unix) || defined (__unix) || defined(__CYGWIN32__)
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# define SYSTNAME "UNIX"
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#endif
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#ifdef MWC
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# define SYSTNAME "COHERENT"
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#endif
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#ifdef _Windows
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# define SYSTNAME "WINDOWS"
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#else
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# ifdef MSDOS
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# define SYSTNAME "MS-DOS"
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# endif
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#endif
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#ifdef __EMX__
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# define SYSTNAME "OS/2"
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#endif
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#ifdef __IBMC__
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# define SYSTNAME "OS/2"
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#endif
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#ifdef THINK_C
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# define SYSTNAME "THINKC"
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#endif
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#ifdef AMIGA
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# define SYSTNAME "AMIGA"
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#endif
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#ifdef atarist
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# define SYSTNAME "ATARIST"
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#endif
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#ifdef mach
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# define SYSTNAME "MACH"
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#endif
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#ifdef ARM_ULIB
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# define SYSTNAME "ACORN"
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#endif
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SCM_PROC(s_software_type, "software-type", 0, 0, 0, scm_software_type);
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SCM
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scm_software_type()
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{
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#ifdef nosve
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return SCM_CAR(scm_intern("nosve", 5));
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#else
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return SCM_CAR(scm_intern(SYSTNAME, sizeof SYSTNAME/sizeof(char) -1));
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#endif
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}
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void
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scm_init_simpos ()
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{
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#include "simpos.x"
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}
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