bin/stty/print.c

   1 /* $NetBSD: print.c,v 1.21 2003/08/07 09:05:42 agc Exp $ */
   2
   3 /*-
   4  * Copyright (c) 1991, 1993, 1994
   5  *      The Regents of the University of California.  All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  * 3. Neither the name of the University nor the names of its contributors
  16  *    may be used to endorse or promote products derived from this software
  17  *    without specific prior written permission.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  29  * SUCH DAMAGE.
  30  */
  31
  32 #include <sys/cdefs.h>
  33 #ifndef lint
  34 #if 0
  35 static char sccsid[] = "@(#)print.c     8.6 (Berkeley) 4/16/94";
  36 #else
  37 __RCSID("$NetBSD: print.c,v 1.21 2003/08/07 09:05:42 agc Exp $");
  38 #endif
  39 #endif /* not lint */
  40
  41 #include <sys/types.h>
  42
  43 #include <stddef.h>
  44 #include <stdio.h>
  45 #include <string.h>
  46
  47 #include "stty.h"
  48 #include "extern.h"
  49
  50 static void binit(const char *);
  51 static void bput(const char *);
  52 static const char *ccval(const struct cchar *, int);
  53
  54 void
  55 print(struct termios *tp, struct winsize *wp, int ldisc, enum FMT fmt)
  56 {
  57         const struct cchar *p;
  58         long tmp;
  59         u_char *cc;
  60         int cnt, ispeed, ospeed;
  61         char buf1[100], buf2[100];
  62
  63         cnt = 0;
  64
  65         /* Line discipline. */
  66 #ifdef TTYDISC
  67         if (ldisc != TTYDISC) {
  68                 switch(ldisc) {
  69                 case TABLDISC:
  70                         cnt += printf("tablet disc; ");
  71                         break;
  72                 case SLIPDISC:
  73                         cnt += printf("slip disc; ");
  74                         break;
  75                 case PPPDISC:
  76                         cnt += printf("ppp disc; ");
  77                         break;
  78                 case STRIPDISC:
  79                         cnt += printf("strip disc; ");
  80                         break;
  81                 default:
  82                         cnt += printf("#%d disc; ", ldisc);
  83                         break;
  84                 }
  85         }
  86 #endif
  87
  88         /* Line speed. */
  89         ispeed = cfgetispeed(tp);
  90         ospeed = cfgetospeed(tp);
  91         if (ispeed != ospeed)
  92                 cnt +=
  93                     printf("ispeed %d baud; ospeed %d baud;", ispeed, ospeed);
  94         else
  95                 cnt += printf("speed %d baud;", ispeed);
  96         if (fmt >= STTY_BSD)
  97                 cnt += printf(" %d rows; %d columns;", wp->ws_row, wp->ws_col);
  98         if (cnt)
  99                 (void)printf("\n");
 100
 101 #define on(f)   ((tmp&f) != 0)
 102 #define put(n, f, d) \
 103         if (fmt >= STTY_BSD || on(f) != d) \
 104                 bput(n + on(f));
 105
 106         /* "local" flags */
 107         tmp = tp->c_lflag;
 108         binit("lflags");
 109         put("-icanon", ICANON, 1);
 110         put("-isig", ISIG, 1);
 111         put("-iexten", IEXTEN, 1);
 112         put("-echo", ECHO, 1);
 113         put("-echoe", ECHOE, 0);
 114         put("-echok", ECHOK, 0);
 115         put("-echoke", ECHOKE, 0);
 116         put("-echonl", ECHONL, 0);
 117         put("-echoctl", ECHOCTL, 0);
 118         put("-echoprt", ECHOPRT, 0);
 119         put("-altwerase", ALTWERASE, 0);
 120         put("-noflsh", NOFLSH, 0);
 121         put("-tostop", TOSTOP, 0);
 122         put("-flusho", FLUSHO, 0);
 123         put("-pendin", PENDIN, 0);
 124         put("-nokerninfo", NOKERNINFO, 0);
 125         put("-extproc", EXTPROC, 0);
 126
 127         /* input flags */
 128         tmp = tp->c_iflag;
 129         binit("iflags");
 130         put("-istrip", ISTRIP, 0);
 131         put("-icrnl", ICRNL, 1);
 132         put("-inlcr", INLCR, 0);
 133         put("-igncr", IGNCR, 0);
 134         put("-ixon", IXON, 1);
 135         put("-ixoff", IXOFF, 0);
 136         put("-ixany", IXANY, 1);
 137         put("-imaxbel", IMAXBEL, 1);
 138         put("-ignbrk", IGNBRK, 0);
 139         put("-brkint", BRKINT, 1);
 140         put("-inpck", INPCK, 0);
 141         put("-ignpar", IGNPAR, 0);
 142         put("-parmrk", PARMRK, 0);
 143
 144         /* output flags */
 145         tmp = tp->c_oflag;
 146         binit("oflags");
 147         put("-opost", OPOST, 1);
 148         put("-onlcr", ONLCR, 1);
 149         put("-ocrnl", OCRNL, 0);
 150         put("-oxtabs", OXTABS, 1);
 151         put("-onocr", OXTABS, 0);
 152         put("-onlret", OXTABS, 0);
 153
 154         /* control flags (hardware state) */
 155         tmp = tp->c_cflag;
 156         binit("cflags");
 157         put("-cread", CREAD, 1);
 158         switch(tmp&CSIZE) {
 159         case CS5:
 160                 bput("cs5");
 161                 break;
 162         case CS6:
 163                 bput("cs6");
 164                 break;
 165         case CS7:
 166                 bput("cs7");
 167                 break;
 168         case CS8:
 169                 bput("cs8");
 170                 break;
 171         }
 172         bput("-parenb" + on(PARENB));
 173         put("-parodd", PARODD, 0);
 174         put("-hupcl", HUPCL, 1);
 175         put("-clocal", CLOCAL, 0);
 176         put("-cstopb", CSTOPB, 0);
 177         put("-crtscts", CRTSCTS, 0);
 178         put("-mdmbuf", MDMBUF, 0);
 179         put("-cdtrcts", CDTRCTS, 0);
 180
 181         /* special control characters */
 182         cc = tp->c_cc;
 183         if (fmt == STTY_POSIX) {
 184                 binit("cchars");
 185                 for (p = cchars1; p->name; ++p) {
 186                         (void)snprintf(buf1, sizeof(buf1), "%s = %s;",
 187                             p->name, ccval(p, cc[p->sub]));
 188                         bput(buf1);
 189                 }
 190                 binit(NULL);
 191         } else {
 192                 binit(NULL);
 193                 for (p = cchars1, cnt = 0; p->name; ++p) {
 194                         if (fmt != STTY_BSD && cc[p->sub] == p->def)
 195                                 continue;
 196 #define WD      "%-8s"
 197                         (void)snprintf(buf1 + cnt * 8, 9, WD, p->name);
 198                         (void)snprintf(buf2 + cnt * 8, 9, WD, ccval(p, cc[p->sub]));
 199                         if (++cnt == LINELENGTH / 8) {
 200                                 cnt = 0;
 201                                 (void)printf("%s\n", buf1);
 202                                 (void)printf("%s\n", buf2);
 203                         }
 204                 }
 205                 if (cnt) {
 206                         (void)printf("%s\n", buf1);
 207                         (void)printf("%s\n", buf2);
 208                 }
 209         }
 210 }
 211
 212 static int col;
 213 static const char *label;
 214
 215 static void
 216 binit(const char *lb)
 217 {
 218
 219         if (col) {
 220                 (void)printf("\n");
 221                 col = 0;
 222         }
 223         label = lb;
 224 }
 225
 226 static void
 227 bput(const char *s)
 228 {
 229
 230         if (col == 0) {
 231                 col = printf("%s: %s", label, s);
 232                 return;
 233         }
 234         if ((col + strlen(s)) > LINELENGTH) {
 235                 (void)printf("\n\t");
 236                 col = printf("%s", s) + 8;
 237                 return;
 238         }
 239         col += printf(" %s", s);
 240 }
 241
 242 static const char *
 243 ccval(const struct cchar *p, int c)
 244 {
 245         static char buf[5];
 246         char *bp;
 247
 248         if (c == _POSIX_VDISABLE)
 249                 return ("<undef>");
 250
 251         if (p->sub == VMIN || p->sub == VTIME) {
 252                 (void)snprintf(buf, sizeof(buf), "%d", c);
 253                 return (buf);
 254         }
 255         bp = buf;
 256         if (c & 0200) {
 257                 *bp++ = 'M';
 258                 *bp++ = '-';
 259                 c &= 0177;
 260         }
 261         if (c == 0177) {
 262                 *bp++ = '^';
 263                 *bp++ = '?';
 264         }
 265         else if (c < 040) {
 266                 *bp++ = '^';
 267                 *bp++ = c + '@';
 268         }
 269         else
 270                 *bp++ = c;
 271         *bp = '\0';
 272         return (buf);
 273 }