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hexdump.c revision 1.1.1.2 
      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 
     34 #ifndef lint
     35 static char copyright[] =
     36 "@(#) Copyright (c) 1989, 1993\n\
     37 	The Regents of the University of California.  All rights reserved.\n";
     38 #endif /* not lint */
     39 
     40 #ifndef lint
     41 static char sccsid[] = "@(#)hexdump.c	8.1 (Berkeley) 6/6/93";
     42 #endif /* not lint */
     43 
     44 #include <sys/types.h>
     45 
     46 #include <errno.h>
     47 #include <stdlib.h>
     48 #include <stdio.h>
     49 #include <string.h>
     50 #include "hexdump.h"
     51 
     52 FS *fshead;				/* head of format strings */
     53 int blocksize;				/* data block size */
     54 int exitval;				/* final exit value */
     55 int length = -1;			/* max bytes to read */
     56 
     57 int
     58 main(argc, argv)
     59 	int argc;
     60 	char *argv[];
     61 {
     62 	register FS *tfs;
     63 	char *p;
     64 
     65 	if (!(p = rindex(argv[0], 'o')) || strcmp(p, "od"))
     66 		newsyntax(argc, &argv);
     67 	else
     68 		oldsyntax(argc, &argv);
     69 
     70 	/* figure out the data block size */
     71 	for (blocksize = 0, tfs = fshead; tfs; tfs = tfs->nextfs) {
     72 		tfs->bcnt = size(tfs);
     73 		if (blocksize < tfs->bcnt)
     74 			blocksize = tfs->bcnt;
     75 	}
     76 	/* rewrite the rules, do syntax checking */
     77 	for (tfs = fshead; tfs; tfs = tfs->nextfs)
     78 		rewrite(tfs);
     79 
     80 	(void)next(argv);
     81 	display();
     82 	exit(exitval);
     83 }
     84 
     85 #if __STDC__
     86 #include <stdarg.h>
     87 #else
     88 #include <varargs.h>
     89 #endif
     90 
     91 void
     92 #if __STDC__
     93 err(const char *fmt, ...)
     94 #else
     95 err(fmt, va_alist)
     96 	char *fmt;
     97         va_dcl
     98 #endif
     99 {
    100 	va_list ap;
    101 #if __STDC__
    102 	va_start(ap, fmt);
    103 #else
    104 	va_start(ap);
    105 #endif
    106 	(void)fprintf(stderr, "hexdump: ");
    107 	(void)vfprintf(stderr, fmt, ap);
    108 	va_end(ap);
    109 	(void)fprintf(stderr, "\n");
    110 	exit(1);
    111 	/* NOTREACHED */
    112 }
    113