bin/stty/print.c

   1 /*-
   2  * Copyright (c) 1991, 1993, 1994
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. All advertising materials mentioning features or use of this software
  14  *    must display the following acknowledgement:
  15  *      This product includes software developed by the University of
  16  *      California, Berkeley and its contributors.
  17  * 4. Neither the name of the University nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  *
  33  * @(#)print.c  8.6 (Berkeley) 4/16/94
  34  * $FreeBSD: src/bin/stty/print.c,v 1.12.2.2 2001/07/04 22:40:00 kris Exp $
  35  * $DragonFly: src/bin/stty/print.c,v 1.5 2004/11/07 21:54:52 eirikn Exp $
  36  */
  37
  38 #include <sys/types.h>
  39
  40 #include <stddef.h>
  41 #include <stdio.h>
  42 #include <string.h>
  43
  44 #include "stty.h"
  45 #include "extern.h"
  46
  47 #include <sys/ioctl_compat.h>   /* XXX NTTYDISC is too well hidden */
  48
  49 static void  binit (const char *);
  50 static void  bput (const char *);
  51 static const char *ccval (struct cchar *, int);
  52
  53 void
  54 print(struct termios *tp, struct winsize *wp, int ldisc, enum FMT fmt)
  55 {
  56         struct cchar *p;
  57         long tmp;
  58         u_char *cc;
  59         int cnt, ispeed, ospeed;
  60         char buf1[100], buf2[100];
  61
  62         cnt = 0;
  63
  64         /* Line discipline. */
  65         if (ldisc != TTYDISC) {
  66                 switch(ldisc) {
  67                 case NTTYDISC:
  68                         cnt += printf("new tty disc; ");
  69                         break;
  70                 case SLIPDISC:
  71                         cnt += printf("slip disc; ");
  72                         break;
  73                 case PPPDISC:
  74                         cnt += printf("ppp disc; ");
  75                         break;
  76                 default:
  77                         cnt += printf("#%d disc; ", ldisc);
  78                         break;
  79                 }
  80         }
  81
  82         /* Line speed. */
  83         ispeed = cfgetispeed(tp);
  84         ospeed = cfgetospeed(tp);
  85         if (ispeed != ospeed)
  86                 cnt +=
  87                     printf("ispeed %d baud; ospeed %d baud;", ispeed, ospeed);
  88         else
  89                 cnt += printf("speed %d baud;", ispeed);
  90         if (fmt >= BSD)
  91                 cnt += printf(" %d rows; %d columns;", wp->ws_row, wp->ws_col);
  92         if (cnt)
  93                 printf("\n");
  94
  95 #define on(f)   ((tmp & (f)) != 0)
  96 #define put(n, f, d) \
  97         if (fmt >= BSD || on(f) != (d)) \
  98                 bput((n) + on(f));
  99
 100         /* "local" flags */
 101         tmp = tp->c_lflag;
 102         binit("lflags");
 103         put("-icanon", ICANON, 1);
 104         put("-isig", ISIG, 1);
 105         put("-iexten", IEXTEN, 1);
 106         put("-echo", ECHO, 1);
 107         put("-echoe", ECHOE, 0);
 108         put("-echok", ECHOK, 0);
 109         put("-echoke", ECHOKE, 0);
 110         put("-echonl", ECHONL, 0);
 111         put("-echoctl", ECHOCTL, 0);
 112         put("-echoprt", ECHOPRT, 0);
 113         put("-altwerase", ALTWERASE, 0);
 114         put("-noflsh", NOFLSH, 0);
 115         put("-tostop", TOSTOP, 0);
 116         put("-flusho", FLUSHO, 0);
 117         put("-pendin", PENDIN, 0);
 118         put("-nokerninfo", NOKERNINFO, 0);
 119         put("-extproc", EXTPROC, 0);
 120
 121         /* input flags */
 122         tmp = tp->c_iflag;
 123         binit("iflags");
 124         put("-istrip", ISTRIP, 0);
 125         put("-icrnl", ICRNL, 1);
 126         put("-inlcr", INLCR, 0);
 127         put("-igncr", IGNCR, 0);
 128         put("-ixon", IXON, 1);
 129         put("-ixoff", IXOFF, 0);
 130         put("-ixany", IXANY, 1);
 131         put("-imaxbel", IMAXBEL, 1);
 132         put("-ignbrk", IGNBRK, 0);
 133         put("-brkint", BRKINT, 1);
 134         put("-inpck", INPCK, 0);
 135         put("-ignpar", IGNPAR, 0);
 136         put("-parmrk", PARMRK, 0);
 137
 138         /* output flags */
 139         tmp = tp->c_oflag;
 140         binit("oflags");
 141         put("-opost", OPOST, 1);
 142         put("-onlcr", ONLCR, 1);
 143         put("-ocrnl", OCRNL, 0);
 144         put("-oxtabs", OXTABS, 1);
 145         put("-onocr", OXTABS, 0);
 146         put("-onlret", OXTABS, 0);
 147
 148         /* control flags (hardware state) */
 149         tmp = tp->c_cflag;
 150         binit("cflags");
 151         put("-cread", CREAD, 1);
 152         switch(tmp&CSIZE) {
 153         case CS5:
 154                 bput("cs5");
 155                 break;
 156         case CS6:
 157                 bput("cs6");
 158                 break;
 159         case CS7:
 160                 bput("cs7");
 161                 break;
 162         case CS8:
 163                 bput("cs8");
 164                 break;
 165         }
 166         bput("-parenb" + on(PARENB));
 167         put("-parodd", PARODD, 0);
 168         put("-hupcl", HUPCL, 1);
 169         put("-clocal", CLOCAL, 0);
 170         put("-cstopb", CSTOPB, 0);
 171         switch(tmp & (CCTS_OFLOW | CRTS_IFLOW)) {
 172         case CCTS_OFLOW:
 173                 bput("ctsflow");
 174                 break;
 175         case CRTS_IFLOW:
 176                 bput("rtsflow");
 177                 break;
 178         default:
 179                 put("-crtscts", CCTS_OFLOW | CRTS_IFLOW, 0);
 180                 break;
 181         }
 182         put("-dsrflow", CDSR_OFLOW, 0);
 183         put("-dtrflow", CDTR_IFLOW, 0);
 184         put("-mdmbuf", MDMBUF, 0);      /* XXX mdmbuf ==  dtrflow */
 185
 186         /* special control characters */
 187         cc = tp->c_cc;
 188         if (fmt == POSIX) {
 189                 binit("cchars");
 190                 for (p = cchars1; p->name; ++p) {
 191                         snprintf(buf1, sizeof(buf1), "%s = %s;",
 192                             p->name, ccval(p, cc[p->sub]));
 193                         bput(buf1);
 194                 }
 195                 binit(NULL);
 196         } else {
 197                 binit(NULL);
 198                 for (p = cchars1, cnt = 0; p->name; ++p) {
 199                         if (fmt != BSD && cc[p->sub] == p->def)
 200                                 continue;
 201 #define WD      "%-8s"
 202                         snprintf(buf1 + cnt * 8, sizeof(buf1) - cnt * 8,
 203                             WD, p->name);
 204                         snprintf(buf2 + cnt * 8, sizeof(buf2) - cnt * 8,
 205                             WD, ccval(p, cc[p->sub]));
 206                         if (++cnt == LINELENGTH / 8) {
 207                                 cnt = 0;
 208                                 printf("%s\n", buf1);
 209                                 printf("%s\n", buf2);
 210                         }
 211                 }
 212                 if (cnt) {
 213                         printf("%s\n", buf1);
 214                         printf("%s\n", buf2);
 215                 }
 216         }
 217 }
 218
 219 static int col;
 220 static const char *label;
 221
 222 static void
 223 binit(const char *lb)
 224 {
 225
 226         if (col) {
 227                 printf("\n");
 228                 col = 0;
 229         }
 230         label = lb;
 231 }
 232
 233 static void
 234 bput(const char *s)
 235 {
 236
 237         if (col == 0) {
 238                 col = printf("%s: %s", label, s);
 239                 return;
 240         }
 241         if ((col + strlen(s)) > LINELENGTH) {
 242                 printf("\n\t");
 243                 col = printf("%s", s) + 8;
 244                 return;
 245         }
 246         col += printf(" %s", s);
 247 }
 248
 249 static const char *
 250 ccval(struct cchar *p, int c)
 251 {
 252         static char buf[5];
 253         char *bp;
 254
 255         if (p->sub == VMIN || p->sub == VTIME) {
 256                 snprintf(buf, sizeof(buf), "%d", c);
 257                 return (buf);
 258         }
 259         if (c == _POSIX_VDISABLE)
 260                 return ("<undef>");
 261         bp = buf;
 262         if (c & 0200) {
 263                 *bp++ = 'M';
 264                 *bp++ = '-';
 265                 c &= 0177;
 266         }
 267         if (c == 0177) {
 268                 *bp++ = '^';
 269                 *bp++ = '?';
 270         }
 271         else if (c < 040) {
 272                 *bp++ = '^';
 273                 *bp++ = c + '@';
 274         }
 275         else
 276                 *bp++ = c;
 277         *bp = '\0';
 278         return (buf);
 279 }