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/* $Id: list_rqs.c,v 1.1 1995/12/14 06:52:47 tholo Exp $ */
/*-
* Copyright 1987, 1988 by the Student Information Processing Board
* of the Massachusetts Institute of Technology
*
* Permission to use, copy, modify, and distribute this software
* and its documentation for any purpose and without fee is
* hereby granted, provided that the above copyright notice
* appear in all copies and that both that copyright notice and
* this permission notice appear in supporting documentation,
* and that the names of M.I.T. and the M.I.T. S.I.P.B. not be
* used in advertising or publicity pertaining to distribution
* of the software without specific, written prior permission.
* M.I.T. and the M.I.T. S.I.P.B. make no representations about
* the suitability of this software for any purpose. It is
* provided "as is" without express or implied warranty.
*/
#include "ss_internal.h"
#include <signal.h>
#include <setjmp.h>
#include <sys/types.h>
#include <sys/wait.h>
#ifdef lint /* "lint returns a value which is sometimes ignored" */
#define DONT_USE(x) x=x;
#else /* !lint */
#define DONT_USE(x) ;
#endif /* lint */
static char const twentyfive_spaces[26] =
" ";
static char const NL[2] = "\n";
int
ss_list_requests(argc, argv, sci_idx, info_ptr)
int argc;
char **argv;
int sci_idx;
pointer info_ptr;
{
register ss_request_entry *entry;
register char const * const *name;
register int spacing;
register ss_request_table **table;
char buffer[BUFSIZ];
FILE *output;
int fd;
#ifndef NPOSIX
struct sigaction nsig, osig;
sigset_t nmask, omask;
int waitb;
#else
int (*func)();
int mask;
union wait waitb;
#endif
DONT_USE(argc);
DONT_USE(argv);
#ifndef NPOSIX
sigemptyset(&nmask);
sigaddset(&nmask, SIGINT);
sigprocmask(SIG_BLOCK, &nmask, &omask);
nsig.sa_handler = SIG_IGN;
sigemptyset(&nsig.sa_mask);
nsig.sa_flags = 0;
sigaction(SIGINT, &nsig, &osig);
#else
mask = sigblock(sigmask(SIGINT));
func = signal(SIGINT, SIG_IGN);
#endif
fd = ss_pager_create();
output = fdopen(fd, "w");
#ifndef NPOSIX
sigprocmask(SIG_SETMASK, &omask, (sigset_t *)0);
#else
sigsetmask(mask);
#endif
fprintf (output, "Available %s requests:\n\n",
ss_info (sci_idx) -> subsystem_name);
for (table = ss_info(sci_idx)->rqt_tables; *table; table++) {
entry = (*table)->requests;
for (; entry->command_names; entry++) {
spacing = -2;
buffer[0] = '\0';
if (entry->flags & SS_OPT_DONT_LIST)
continue;
for (name = entry->command_names; *name; name++) {
register int len = strlen(*name);
strncat(buffer, *name, len);
spacing += len + 2;
if (name[1]) {
strcat(buffer, ", ");
}
}
if (spacing > 23) {
strcat(buffer, NL);
fputs(buffer, output);
spacing = 0;
buffer[0] = '\0';
}
strncat(buffer, twentyfive_spaces, 25-spacing);
strcat(buffer, entry->info_string);
strcat(buffer, NL);
fputs(buffer, output);
}
}
fclose(output);
#ifndef NO_FORK
wait(&waitb);
#endif
#ifndef NPOSIX
sigaction(SIGINT, &osig, (struct sigaction *)0);
#else
(void) signal(SIGINT, func);
#endif
}
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