bin/stty/print.c

   1 /* $NetBSD: print.c,v 1.23 2013/09/12 19:47:23 christos 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 1.23 2013/09/12 19:47:23 christos 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 queue, const char *ldisc,
  56     enum FMT fmt)
  57 {
  58         const struct cchar *p;
  59         long tmp;
  60         u_char *cc;
  61         int cnt, ispeed, ospeed;
  62         char buf1[100], buf2[100];
  63
  64         cnt = 0;
  65
  66         /* Line speed. */
  67         ispeed = cfgetispeed(tp);
  68         ospeed = cfgetospeed(tp);
  69         if (ispeed != ospeed)
  70                 cnt +=
  71                     printf("ispeed %d baud; ospeed %d baud;", ispeed, ospeed);
  72         else
  73                 cnt += printf("speed %d baud;", ispeed);
  74         if (fmt >= STTY_BSD) {
  75                 cnt += printf(" %d rows; %d columns;", wp->ws_row, wp->ws_col);
  76                 if (queue)
  77                         cnt += printf(" queue = %d;", queue);
  78                 if (ldisc)
  79                         cnt += printf(" line = %s;", ldisc);
  80         }
  81
  82         if (cnt)
  83                 (void)printf("\n");
  84
  85 #define on(f)   ((tmp&f) != 0)
  86 #define put(n, f, d) \
  87         if (fmt >= STTY_BSD || on(f) != d) \
  88                 bput(n + on(f));
  89
  90         /* "local" flags */
  91         tmp = tp->c_lflag;
  92         binit("lflags");
  93         put("-icanon", ICANON, 1);
  94         put("-isig", ISIG, 1);
  95         put("-iexten", IEXTEN, 1);
  96         put("-echo", ECHO, 1);
  97         put("-echoe", ECHOE, 0);
  98         put("-echok", ECHOK, 0);
  99         put("-echoke", ECHOKE, 0);
 100         put("-echonl", ECHONL, 0);
 101         put("-echoctl", ECHOCTL, 0);
 102         put("-echoprt", ECHOPRT, 0);
 103         put("-altwerase", ALTWERASE, 0);
 104         put("-noflsh", NOFLSH, 0);
 105         put("-tostop", TOSTOP, 0);
 106         put("-flusho", FLUSHO, 0);
 107         put("-pendin", PENDIN, 0);
 108         put("-nokerninfo", NOKERNINFO, 0);
 109         put("-extproc", EXTPROC, 0);
 110
 111         /* input flags */
 112         tmp = tp->c_iflag;
 113         binit("iflags");
 114         put("-istrip", ISTRIP, 0);
 115         put("-icrnl", ICRNL, 1);
 116         put("-inlcr", INLCR, 0);
 117         put("-igncr", IGNCR, 0);
 118         put("-ixon", IXON, 1);
 119         put("-ixoff", IXOFF, 0);
 120         put("-ixany", IXANY, 1);
 121         put("-imaxbel", IMAXBEL, 1);
 122         put("-ignbrk", IGNBRK, 0);
 123         put("-brkint", BRKINT, 1);
 124         put("-inpck", INPCK, 0);
 125         put("-ignpar", IGNPAR, 0);
 126         put("-parmrk", PARMRK, 0);
 127
 128         /* output flags */
 129         tmp = tp->c_oflag;
 130         binit("oflags");
 131         put("-opost", OPOST, 1);
 132         put("-onlcr", ONLCR, 1);
 133         put("-ocrnl", OCRNL, 0);
 134         put("-oxtabs", OXTABS, 1);
 135         put("-onocr", OXTABS, 0);
 136         put("-onlret", OXTABS, 0);
 137
 138         /* control flags (hardware state) */
 139         tmp = tp->c_cflag;
 140         binit("cflags");
 141         put("-cread", CREAD, 1);
 142         switch(tmp&CSIZE) {
 143         case CS5:
 144                 bput("cs5");
 145                 break;
 146         case CS6:
 147                 bput("cs6");
 148                 break;
 149         case CS7:
 150                 bput("cs7");
 151                 break;
 152         case CS8:
 153                 bput("cs8");
 154                 break;
 155         }
 156         bput("-parenb" + on(PARENB));
 157         put("-parodd", PARODD, 0);
 158         put("-hupcl", HUPCL, 1);
 159         put("-clocal", CLOCAL, 0);
 160         put("-cstopb", CSTOPB, 0);
 161         put("-crtscts", CRTSCTS, 0);
 162         put("-mdmbuf", MDMBUF, 0);
 163         put("-cdtrcts", CDTRCTS, 0);
 164
 165         /* special control characters */
 166         cc = tp->c_cc;
 167         if (fmt == STTY_POSIX) {
 168                 binit("cchars");
 169                 for (p = cchars1; p->name; ++p) {
 170                         (void)snprintf(buf1, sizeof(buf1), "%s = %s;",
 171                             p->name, ccval(p, cc[p->sub]));
 172                         bput(buf1);
 173                 }
 174                 binit(NULL);
 175         } else {
 176                 binit(NULL);
 177                 for (p = cchars1, cnt = 0; p->name; ++p) {
 178                         if (fmt != STTY_BSD && cc[p->sub] == p->def)
 179                                 continue;
 180 #define WD      "%-8s"
 181                         (void)snprintf(buf1 + cnt * 8, 9, WD, p->name);
 182                         (void)snprintf(buf2 + cnt * 8, 9, WD, ccval(p, cc[p->sub]));
 183                         if (++cnt == LINELENGTH / 8) {
 184                                 cnt = 0;
 185                                 (void)printf("%s\n", buf1);
 186                                 (void)printf("%s\n", buf2);
 187                         }
 188                 }
 189                 if (cnt) {
 190                         (void)printf("%s\n", buf1);
 191                         (void)printf("%s\n", buf2);
 192                 }
 193         }
 194 }
 195
 196 static int col;
 197 static const char *label;
 198
 199 static void
 200 binit(const char *lb)
 201 {
 202
 203         if (col) {
 204                 (void)printf("\n");
 205                 col = 0;
 206         }
 207         label = lb;
 208 }
 209
 210 static void
 211 bput(const char *s)
 212 {
 213
 214         if (col == 0) {
 215                 col = printf("%s: %s", label, s);
 216                 return;
 217         }
 218         if ((col + strlen(s)) > LINELENGTH) {
 219                 (void)printf("\n\t");
 220                 col = printf("%s", s) + 8;
 221                 return;
 222         }
 223         col += printf(" %s", s);
 224 }
 225
 226 static const char *
 227 ccval(const struct cchar *p, int c)
 228 {
 229         static char buf[5];
 230         char *bp;
 231
 232         if (c == _POSIX_VDISABLE)
 233                 return ("<undef>");
 234
 235         if (p->sub == VMIN || p->sub == VTIME) {
 236                 (void)snprintf(buf, sizeof(buf), "%d", c);
 237                 return (buf);
 238         }
 239         bp = buf;
 240         if (c & 0200) {
 241                 *bp++ = 'M';
 242                 *bp++ = '-';
 243                 c &= 0177;
 244         }
 245         if (c == 0177) {
 246                 *bp++ = '^';
 247                 *bp++ = '?';
 248         }
 249         else if (c < 040) {
 250                 *bp++ = '^';
 251                 *bp++ = c + '@';
 252         }
 253         else
 254                 *bp++ = c;
 255         *bp = '\0';
 256         return (buf);
 257 }