text-utils/hexdump-conv.c

   1 /*
   2  * Copyright (c) 1989 The Regents of the University of California.
   3  * 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
  34 #include <stdio.h>
  35 #include <ctype.h>
  36 #include <sys/types.h>
  37 #include "hexdump.h"
  38 #include "xalloc.h"
  39
  40 void
  41 conv_c(struct hexdump_pr *pr, u_char *p)
  42 {
  43         char *buf = NULL;
  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                 printf(pr->fmt, *p);
  78         } else {
  79                 xasprintf(&buf, "%03o", *p);
  80                 str = buf;
  81 strpr:          *pr->cchar = 's';
  82                 printf(pr->fmt, str);
  83         }
  84         free(buf);
  85 }
  86
  87 void
  88 conv_u(struct hexdump_pr *pr, u_char *p)
  89 {
  90         static const char *list[] = {
  91                 "nul", "soh", "stx", "etx", "eot", "enq", "ack", "bel",
  92                  "bs",  "ht",  "lf",  "vt",  "ff",  "cr",  "so",  "si",
  93                 "dle", "dc1", "dc2", "dc3", "dc4", "nak", "syn", "etb",
  94                 "can",  "em", "sub", "esc",  "fs",  "gs",  "rs",  "us",
  95         };
  96
  97                                                 /* od used nl, not lf */
  98         if (*p <= 0x1f) {
  99                 *pr->cchar = 's';
 100                 printf(pr->fmt, list[*p]);
 101         } else if (*p == 0x7f) {
 102                 *pr->cchar = 's';
 103                 printf(pr->fmt, "del");
 104         } else if (isprint(*p)) {
 105                 *pr->cchar = 'c';
 106                 printf(pr->fmt, *p);
 107         } else {
 108                 *pr->cchar = 'x';
 109                 printf(pr->fmt, *p);
 110         }
 111 }