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. 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  * @(#)conv.c   8.1 (Berkeley) 6/6/93
  34  * $FreeBSD: src/usr.bin/hexdump/conv.c,v 1.1.1.1.14.1 2002/07/23 14:27:06 tjr Exp $
  35  * $DragonFly: src/usr.bin/hexdump/conv.c,v 1.3 2003/10/04 20:36:45 hmp Exp $
  36  */
  37
  38 #include <sys/types.h>
  39
  40 #include <stdio.h>
  41 #include <ctype.h>
  42 #include "hexdump.h"
  43
  44 void
  45 conv_c(PR *pr, u_char *p)
  46 {
  47         char buf[10];
  48         char const *str;
  49
  50         switch(*p) {
  51         case '\0':
  52                 str = "\\0";
  53                 goto strpr;
  54         /* case '\a': */
  55         case '\007':
  56                 str = "\\a";
  57                 goto strpr;
  58         case '\b':
  59                 str = "\\b";
  60                 goto strpr;
  61         case '\f':
  62                 str = "\\f";
  63                 goto strpr;
  64         case '\n':
  65                 str = "\\n";
  66                 goto strpr;
  67         case '\r':
  68                 str = "\\r";
  69                 goto strpr;
  70         case '\t':
  71                 str = "\\t";
  72                 goto strpr;
  73         case '\v':
  74                 str = "\\v";
  75                 goto strpr;
  76         default:
  77                 break;
  78         }
  79         if (isprint(*p)) {
  80                 *pr->cchar = 'c';
  81                 (void)printf(pr->fmt, *p);
  82         } else {
  83                 (void)sprintf(buf, "%03o", (int)*p);
  84                 str = buf;
  85 strpr:          *pr->cchar = 's';
  86                 (void)printf(pr->fmt, str);
  87         }
  88 }
  89
  90 void
  91 conv_u(PR *pr, u_char *p)
  92 {
  93         static char const * list[] = {
  94                 "nul", "soh", "stx", "etx", "eot", "enq", "ack", "bel",
  95                  "bs",  "ht",  "lf",  "vt",  "ff",  "cr",  "so",  "si",
  96                 "dle", "dcl", "dc2", "dc3", "dc4", "nak", "syn", "etb",
  97                 "can",  "em", "sub", "esc",  "fs",  "gs",  "rs",  "us",
  98         };
  99
 100                                                 /* od used nl, not lf */
 101         if (*p <= 0x1f) {
 102                 *pr->cchar = 's';
 103                 if (odmode && *p == 0x0a)
 104                         (void)printf(pr->fmt, "nl");
 105                 else
 106                         (void)printf(pr->fmt, list[*p]);
 107         } else if (*p == 0x7f) {
 108                 *pr->cchar = 's';
 109                 (void)printf(pr->fmt, "del");
 110         } else if (odmode && *p == 0x20) {      /* od replaced space with sp */
 111                 *pr->cchar = 's';
 112                 (void)printf(pr->fmt, " sp");
 113         } else if (isprint(*p)) {
 114                 *pr->cchar = 'c';
 115                 (void)printf(pr->fmt, *p);
 116         } else {
 117                 *pr->cchar = 'x';
 118                 (void)printf(pr->fmt, (int)*p);
 119         }
 120 }