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84 lines
2.4 KiB
84 lines
2.4 KiB
7 months ago
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/*
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* Copyright 1987, 1988 by MIT Student Information Processing Board
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*
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* Permission to use, copy, modify, and distribute this software and
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* its documentation for any purpose is hereby granted, provided that
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* the names of M.I.T. and the M.I.T. S.I.P.B. not be used in
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* advertising or publicity pertaining to distribution of the software
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* without specific, written prior permission. M.I.T. and the
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* M.I.T. S.I.P.B. make no representations about the suitability of
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* this software for any purpose. It is provided "as is" without
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* express or implied warranty.
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*/
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#include "config.h"
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#include "ss_internal.h"
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#include <signal.h>
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#include <setjmp.h>
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#include <sys/wait.h>
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typedef void sigret_t;
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void ss_list_requests(int argc __SS_ATTR((unused)),
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const char * const *argv __SS_ATTR((unused)),
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int sci_idx, void *infop __SS_ATTR((unused)))
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{
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ss_request_entry *entry;
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char const * const *name;
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int i, spacing;
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ss_request_table **table;
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FILE *output;
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int fd;
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sigset_t omask, igmask;
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sigret_t (*func)(int);
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#ifndef NO_FORK
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int waitb;
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#endif
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sigemptyset(&igmask);
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sigaddset(&igmask, SIGINT);
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sigprocmask(SIG_BLOCK, &igmask, &omask);
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func = signal(SIGINT, SIG_IGN);
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fd = ss_pager_create();
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if (fd < 0) {
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perror("ss_pager_create");
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(void) signal(SIGINT, func);
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return;
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}
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output = fdopen(fd, "w");
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sigprocmask(SIG_SETMASK, &omask, (sigset_t *) 0);
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fprintf (output, "Available %s requests:\n\n",
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ss_info (sci_idx) -> subsystem_name);
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for (table = ss_info(sci_idx)->rqt_tables; *table; table++) {
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entry = (*table)->requests;
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for (; entry->command_names; entry++) {
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spacing = -2;
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if (entry->flags & SS_OPT_DONT_LIST)
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continue;
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for (name = entry->command_names; *name; name++) {
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int len = strlen(*name);
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fputs(*name, output);
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spacing += len + 2;
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if (name[1]) {
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fputs(", ", output);
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}
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}
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if (spacing > 23) {
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fputc('\n', output);
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spacing = 0;
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}
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for (i = 0; i < 25 - spacing; i++)
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fputc(' ', output);
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fputs(entry->info_string, output);
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fputc('\n', output);
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}
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}
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fclose(output);
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#ifndef NO_FORK
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wait(&waitb);
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#endif
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(void) signal(SIGINT, func);
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}
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