usr.bin/hexdump/conv.c

   1 /*
   2  * Copyright (c) 1989, 1993
   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. Neither the name of the University nor the names of its contributors
  14  *    may be used to endorse or promote products derived from this software
  15  *    without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  *
  29  * @(#)conv.c   8.1 (Berkeley) 6/6/93
  30  * $FreeBSD: src/usr.bin/hexdump/conv.c,v 1.1.1.1.14.1 2002/07/23 14:27:06 tjr Exp $
  31  * $DragonFly: src/usr.bin/hexdump/conv.c,v 1.3 2003/10/04 20:36:45 hmp Exp $
  32  */
  33
  34 #include <sys/types.h>
  35
  36 #include <stdio.h>
  37 #include <ctype.h>
  38 #include "hexdump.h"
  39
  40 void
  41 conv_c(PR *pr, u_char *p)
  42 {
  43         char buf[10];
  44         char const *str;
  45
  46         switch(*p) {
  47         case '\0':
  48                 str = "\\0";
  49                 goto strpr;
  50         /* case '\a': */
  51         case '\007':
  52                 str = "\\a";
  53                 goto strpr;
  54         case '\b':
  55                 str = "\\b";
  56                 goto strpr;
  57         case '\f':
  58                 str = "\\f";
  59                 goto strpr;
  60         case '\n':
  61                 str = "\\n";
  62                 goto strpr;
  63         case '\r':
  64                 str = "\\r";
  65                 goto strpr;
  66         case '\t':
  67                 str = "\\t";
  68                 goto strpr;
  69         case '\v':
  70                 str = "\\v";
  71                 goto strpr;
  72         default:
  73                 break;
  74         }
  75         if (isprint(*p)) {
  76                 *pr->cchar = 'c';
  77                 (void)printf(pr->fmt, *p);
  78         } else {
  79                 (void)sprintf(buf, "%03o", (int)*p);
  80                 str = buf;
  81 strpr:          *pr->cchar = 's';
  82                 (void)printf(pr->fmt, str);
  83         }
  84 }
  85
  86 void
  87 conv_u(PR *pr, u_char *p)
  88 {
  89         static char const * list[] = {
  90                 "nul", "soh", "stx", "etx", "eot", "enq", "ack", "bel",
  91                  "bs",  "ht",  "lf",  "vt",  "ff",  "cr",  "so",  "si",
  92                 "dle", "dcl", "dc2", "dc3", "dc4", "nak", "syn", "etb",
  93                 "can",  "em", "sub", "esc",  "fs",  "gs",  "rs",  "us",
  94         };
  95
  96                                                 /* od used nl, not lf */
  97         if (*p <= 0x1f) {
  98                 *pr->cchar = 's';
  99                 if (odmode && *p == 0x0a)
 100                         (void)printf(pr->fmt, "nl");
 101                 else
 102                         (void)printf(pr->fmt, list[*p]);
 103         } else if (*p == 0x7f) {
 104                 *pr->cchar = 's';
 105                 (void)printf(pr->fmt, "del");
 106         } else if (odmode && *p == 0x20) {      /* od replaced space with sp */
 107                 *pr->cchar = 's';
 108                 (void)printf(pr->fmt, " sp");
 109         } else if (isprint(*p)) {
 110                 *pr->cchar = 'c';
 111                 (void)printf(pr->fmt, *p);
 112         } else {
 113                 *pr->cchar = 'x';
 114                 (void)printf(pr->fmt, (int)*p);
 115         }
 116 }