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synced 2025-04-30 03:40:34 +02:00
f25f761dac
scm_lookupcar1: throw an error with key 'unbound-variable instead of 'misc-error when an unbound variable is encountered. * filesys.c (scm_mkdir, scm_rmdir, scm_getcwd, scm_select, scm_symlink, scm_readlink, scm_lstat), posix.c (scm_setpgid, scm_setsid, scm_ctermid, scm_tcgetpgrp, scm_tcsetpgrp, scm_uname, scm_setlocale, scm_mknod, scm_nice, scm_sync), simpos.c (scm_system), stime.c (scm_times, scm_strptime): move the HAVE_XXX feature tests out of the procedure bodies. don't use SCM_SYSMISSING. scm_validate.h (SCM_SYSMISSING): removed. error.h, error.c (scm_sysmissing): comment that this is deprecated. see ChangeLog entry for 1999-12-28.
140 lines
4.4 KiB
C
140 lines
4.4 KiB
C
/* Copyright (C) 1995,1996,1997,1998 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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/* Software engineering face-lift by Greg J. Badros, 11-Dec-1999,
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gjb@cs.washington.edu, http://www.cs.washington.edu/homes/gjb */
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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 "scm_validate.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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#ifdef HAVE_SYSTEM
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SCM_DEFINE (scm_system, "system", 0, 1, 0,
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(SCM cmd),
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"Executes @var{cmd} using the operating system's "command processor".
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Under Unix this is usually the default shell @code{sh}. The value
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returned is @var{cmd}'s exit status as returned by @code{waitpid}, which
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can be interpreted using the functions above.
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If @code{system} is called without arguments, it returns a boolean
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indicating whether the command processor is available.")
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#define FUNC_NAME s_scm_system
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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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rv = system (NULL);
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return SCM_BOOL(rv);
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}
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SCM_VALIDATE_ROSTRING (1,cmd);
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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;
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SCM_ALLOW_INTS;
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return SCM_MAKINUM (rv);
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}
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#undef FUNC_NAME
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#endif /* HAVE_SYSTEM */
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extern char *getenv();
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SCM_DEFINE (scm_getenv, "getenv", 1, 0, 0,
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(SCM nam),
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"Looks up the string @var{name} in the current environment. The return
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value is @code{#f} unless a string of the form @code{NAME=VALUE} is
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found, in which case the string @code{VALUE} is
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returned.")
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#define FUNC_NAME s_scm_getenv
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{
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char *val;
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SCM_VALIDATE_ROSTRING (1,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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#undef FUNC_NAME
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/* simple exit, without unwinding the scheme stack or flushing ports. */
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SCM_DEFINE (scm_primitive_exit, "primitive-exit", 0, 1, 0,
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(SCM status),
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"Terminate the current process without unwinding the Scheme stack.
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This is would typically be useful after a fork. The exit status
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is @var{status} if supplied, otherwise zero.")
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#define FUNC_NAME s_scm_primitive_exit
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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_VALIDATE_INUM (1,status);
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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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#undef FUNC_NAME
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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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