source: trunk/athena/bin/discuss/client/sequencer.c @ 8855

/*
 *      $Source: /afs/dev.mit.edu/source/repository/athena/bin/discuss/client/sequencer.c,v $
 *      $Author: ghudson $
 *      $Header: /afs/dev.mit.edu/source/repository/athena/bin/discuss/client/sequencer.c,v 1.4 1996-09-19 22:28:30 ghudson Exp $
 *
 *      Copyright (C) 1987 by the Massachusetts Institute of Technology
 *
 *      $Log: not supported by cvs2svn $
 *      Revision 1.3  1993/03/07 06:22:02  probe
 *      ss_execute_line should not be called with read-only strings.
 *
 * Revision 1.2  91/07/22  01:29:03  probe
 * POSIX integration
 * 
 * Revision 1.1  91/07/05  00:48:53  probe
 * Initial revision
 * 
 */

#ifndef lint
static char *rcsid_sequencer_c = "$Header: /afs/dev.mit.edu/source/repository/athena/bin/discuss/client/sequencer.c,v 1.4 1996-09-19 22:28:30 ghudson Exp $";
#endif lint

#include "types.h"
#include "interface.h"
#include "globals.h"
#include <sys/types.h>
#include <sys/file.h>
#include <sys/ioctl.h>

static char ss_buf[512];

static changed_meetings()
{
        int code, n_matches, i;
        name_blk *set, *nbp;

        dsc_expand_mtg_set(user_id, "*", &set, &n_matches, &code);
        for (i = 0; i < n_matches; i++) {
                nbp = &set[i];
                if (nbp->status & DSC_ST_CHANGED) {
                        free(set);
                        return 1;
                }
        }
        free(set);
        return 0;
}

static unseen_transactions()
{
        return 1;               /* XXX */
}
sequencer(argc, argv, ss_idx)
        int argc;
        char **argv;
        int ss_idx;
{
        int code;
        int cmd;
        strcpy(ss_buf, "ckm");
        ss_execute_line(ss_idx, ss_buf, &code);
        if (code != 0) goto punt;

        while(changed_meetings()) {
                cmd = more_break("Hit space to go to next meeting: ", " q");
                switch(cmd) {
                case 'q': 
                        return;

                case ' ':
                case 'n':
                        break;
                }
                strcpy(ss_buf, "nm");
                ss_execute_line(ss_idx, ss_buf, &code);
                if (code != 0) goto punt;
                
                while (unseen_transactions()) {
                        cmd = more_break("Hit space for next transaction: ", " q");
                        switch (cmd) {
                        case 'q':
                                return;
                        case ' ':
                        case 'n':
                                break;
                        }
                        strcpy(ss_buf, "next");
                        ss_execute_line(ss_idx, ss_buf, &code);
                        if (code != 0) goto punt;
                }
        }
        return;

punt:
        ss_perror(ss_idx, code, 0);
}

/*
 * Flames to /dev/null
 */

more_break(prompt, cmds)
        char *prompt;
        char *cmds;
{
        int arg;
        char buf[1];
#ifndef POSIX
        struct sgttyb tty, ntty;

        arg = FREAD;                            /* Flush pending input */
        ioctl(0, TIOCFLUSH, &arg);
        ioctl(0, TIOCGETP, &tty);               /* Get parameters.. */
        ntty = tty;
        ntty.sg_flags |= CBREAK;
        ntty.sg_flags &= ~ECHO;
        ioctl(0, TIOCSETP, &ntty);              /* go to cbreak, ~echo */
#else
        struct termios tty, ntty;

        (void) tcflush(0, TCIFLUSH);
        (void) tcgetattr(0, &tty);
        ntty = tty;
        ntty.c_cc[VMIN] = 1;
        ntty.c_cc[VTIME] = 0;
        ntty.c_iflag &= ~(ICRNL);
        ntty.c_lflag &= ~(ICANON|ISIG|ECHO);
        (void) tcsetattr(0, TCSANOW, &ntty);
#endif
        write(1, prompt, strlen(prompt));
        for (;;)  {
                if (read(0, buf, 1) != 1) {
                        buf[0] = 'q';
                        break;
                }
                if (strchr(cmds, buf[0]))
                        break;
                write(1, "\7", 1);
        }
#ifdef POSIX
        (void) tcsetattr(0, TCSANOW, &tty);
#else
        ioctl(0, TIOCSETP, &tty);
#endif
        write(1, "\n", 1);
        return buf[0];
}