bin/stty/print.c

/*-
 * Copyright (c) 1991 The Regents of the University of California.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *      This product includes software developed by the University of
 *      California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#ifndef lint
static char sccsid[] = "@(#)print.c     5.4 (Berkeley) 6/10/91";
#endif /* not lint */

#include <sys/types.h>
#include <stddef.h>
#include <stdio.h>
#include <string.h>
#include "stty.h"
#include "extern.h"

static void  binit __P((char *));
static void  bput __P((char *));
static char *ccval __P((int));

void
print(tp, wp, ldisc, fmt)
        struct termios *tp;
        struct winsize *wp;
        int ldisc;
        enum FMT fmt;
{
        register struct cchar *p;
        register long tmp;
        register int cnt;
        register u_char *cc;
        int ispeed, ospeed;
        char buf1[100], buf2[100];

        cnt = 0;

        /* Line discipline. */
        if (ldisc != TTYDISC) {
                switch(ldisc) {
                case TABLDISC:
                        cnt += printf("tablet disc; ");
                        break;
                case SLIPDISC:
                        cnt += printf("slip disc; ");
                        break;
                default:
                        cnt += printf("#%d disc; ", ldisc);
                        break;
                }
        }

        /* Line speed. */
        ispeed = cfgetispeed(tp);
        ospeed = cfgetospeed(tp);
        if (ispeed != ospeed)
                cnt +=
                    printf("ispeed %d baud; ospeed %d baud;", ispeed, ospeed);
        else
                cnt += printf("speed %d baud;", ispeed);
        if (fmt >= BSD)
                cnt += printf(" %d rows; %d columns;", wp->ws_row, wp->ws_col);
        if (cnt)
                (void)printf("\n");

#define on(f)   ((tmp&f) != 0)
#define put(n, f, d) \
        if (fmt >= BSD || on(f) != d) \
                bput(n + on(f));

        /* "local" flags */
        tmp = tp->c_lflag;
        binit("lflags");
        put("-icanon", ICANON, 1);
        put("-isig", ISIG, 1);
        put("-iexten", IEXTEN, 1);
        put("-echo", ECHO, 1);
        put("-echoe", ECHOE, 0);
        put("-echok", ECHOK, 0);
        put("-echoke", ECHOKE, 0);
        put("-echonl", ECHONL, 0);
        put("-echoctl", ECHOCTL, 0);
        put("-echoprt", ECHOPRT, 0);
        put("-altwerase", ALTWERASE, 0);
        put("-noflsh", NOFLSH, 0);
        put("-tostop", TOSTOP, 0);
        put("-mdmbuf", MDMBUF, 0);
        put("-flusho", FLUSHO, 0);
        put("-pendin", PENDIN, 0);
        put("-nokerninfo", NOKERNINFO, 0);
        put("-extproc", EXTPROC, 0);

        /* input flags */
        tmp = tp->c_iflag;
        binit("iflags");
        put("-istrip", ISTRIP, 0);
        put("-icrnl", ICRNL, 1);
        put("-inlcr", INLCR, 0);
        put("-igncr", IGNCR, 0);
        put("-ixon", IXON, 1);
        put("-ixoff", IXOFF, 0);
        put("-ixany", IXANY, 1);
        put("-imaxbel", IMAXBEL, 1);
        put("-ignbrk", IGNBRK, 0);
        put("-brkint", BRKINT, 1);
        put("-inpck", INPCK, 0);
        put("-ignpar", IGNPAR, 0);
        put("-parmrk", PARMRK, 0);

        /* output flags */
        tmp = tp->c_oflag;
        binit("oflags");
        put("-opost", OPOST, 1);
        put("-onlcr", ONLCR, 1);
        put("-oxtabs", OXTABS, 1);

        /* control flags (hardware state) */
        tmp = tp->c_cflag;
        binit("cflags");
        put("-cread", CREAD, 1);
        switch(tmp&CSIZE) {
        case CS5:
                bput("cs5");
                break;
        case CS6:
                bput("cs6");
                break;
        case CS7:
                bput("cs7");
                break;
        case CS8:
                bput("cs8");
                break;
        }
        bput("-parenb" + on(PARENB));
        put("-parodd", PARODD, 0);
        put("-hupcl", HUPCL, 1);
        put("-clocal", CLOCAL, 0);
        put("-cstopb", CSTOPB, 0);
        put("-crtscts", CRTSCTS, 0);

        /* special control characters */
        cc = tp->c_cc;
        if (fmt == POSIX) {
                binit("cchars");
                for (p = cchars1; p->name; ++p) {
                        (void)snprintf(buf1, sizeof(buf1), "%s = %s;",
                            p->name, ccval(cc[p->sub]));
                        bput(buf1);
                }
                binit(NULL);
        } else {
                binit(NULL);
                for (p = cchars1, cnt = 0; p->name; ++p) {
                        if (fmt != BSD && cc[p->sub] == p->def)
                                continue;
#define WD      "%-8s"
                        (void)sprintf(buf1 + cnt * 8, WD, p->name);
                        (void)sprintf(buf2 + cnt * 8, WD, ccval(cc[p->sub]));
                        if (++cnt == LINELENGTH / 8) {
                                cnt = 0;
                                (void)printf("%s\n", buf1);
                                (void)printf("%s\n", buf2);
                        }
                }
                if (cnt) {
                        (void)printf("%s\n", buf1);
                        (void)printf("%s\n", buf2);
                }
        }
}

static int col;
static char *label;

static void
binit(lb)
        char *lb;
{
        if (col) {
                (void)printf("\n");
                col = 0;
        }
        label = lb;
}

static void
bput(s)
        char *s;
{
        if (col == 0) {
                col = printf("%s: %s", label, s);
                return;
        }
        if ((col + strlen(s)) > LINELENGTH) {
                (void)printf("\n\t");
                col = printf("%s", s) + 8;
                return;
        }
        col += printf(" %s", s);
}

static char *
ccval(c)
        int c;
{
        static char buf[5];
        char *bp;

        if (c == _POSIX_VDISABLE)
                return("<undef>");

        bp = buf;
        if (c & 0200) {
                *bp++ = 'M';
                *bp++ = '-';
                c &= 0177;
        }
        if (c == 0177) {
                *bp++ = '^';
                *bp++ = '?';
        }
        else if (c < 040) {
                *bp++ = '^';
                *bp++ = c + '@';
        }
        else
                *bp++ = c;
        *bp = '\0';
        return(buf);
}