trimming trailing blanks is too hard; the last revision handles most of the

[unix-history] / usr / src / usr.bin / hexdump / conv.c

/*
* Copyright (c) 1989 The Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms are permitted
* provided that the above copyright notice and this paragraph are
* duplicated in all such forms and that any documentation,
* advertising materials, and other materials related to such
* distribution and use acknowledge that the software was developed
* by the University of California, Berkeley.  The name of the
* University may not be used to endorse or promote products derived
* from this software without specific prior written permission.
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/

#ifndef lint
static char sccsid[] = "@(#)conv.c      5.1 (Berkeley) %G%";
#endif /* not lint */

#include <sys/types.h>
#include <ctype.h>
#include "hexdump.h"

conv_c(pr, p)
       PR *pr;
       u_char *p;
{
       char *str;

       switch(*p) {
       case '\0':
               str = "\\0";
               goto strpr;
       /* case '\a': */
       case '\007':
               str = "\\a";
               goto strpr;
       case '\b':
               str = "\\b";
               goto strpr;
       case '\f':
               str = "\\f";
               goto strpr;
       case '\n':
               str = "\\n";
               goto strpr;
       case '\r':
               str = "\\r";
               goto strpr;
       case '\t':
               str = "\\t";
               goto strpr;
       case '\v':
               str = "\\v";
strpr:          *pr->cchar = 's';
               (void)printf(pr->fmt, str);
               break;
       default:
               if (isprint(*p)) {
                       *pr->cchar = 'c';
                       (void)printf(pr->fmt, *p);
               } else {
                       *pr->cchar = 'x';
                       (void)printf(pr->fmt, (int)*p);
               }
       }
}

conv_u(pr, p)
       PR *pr;
       u_char *p;
{
       static char *list[] = {
               "nul", "soh", "stx", "etx", "eot", "enq", "ack", "bel",
                "bs",  "ht",  "lf",  "vt",  "ff",  "cr",  "so",  "si",
               "dle", "dcl", "dc2", "dc3", "dc4", "nak", "syn", "etc",
               "can",  "em", "sub", "esc",  "fs",  "gs",  "rs",  "us",
       };

       if (*p <= 0x1f) {
               *pr->cchar = 's';
               (void)printf(pr->fmt, list[*p]);
       } else if (*p == 0xff) {
               *pr->cchar = 's';
               (void)printf(pr->fmt, "del");
       } else if (isprint(*p)) {
               *pr->cchar = 'c';
               (void)printf(pr->fmt, *p);
       } else {
               *pr->cchar = 'x';
               (void)printf(pr->fmt, (int)*p);
       }
}