hexdump.c (2752B)
1 /* $OpenBSD: hexdump.c,v 1.16 2011/09/22 09:09:42 stsp Exp $ */ 2 /* $NetBSD: hexdump.c,v 1.7 1997/10/19 02:34:06 lukem Exp $ */ 3 4 /* 5 * Copyright (c) 1989, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. Neither the name of the University nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 */ 32 33 #include <sys/param.h> 34 #include <err.h> 35 #include <stdio.h> 36 #include <stdlib.h> 37 #include <string.h> 38 #include "hexdump.h" 39 40 FS *fshead; /* head of format strings */ 41 int blocksize; /* data block size */ 42 int exitval; /* final exit value */ 43 long length = -1; /* max bytes to read */ 44 char *iobuf; /* stdio I/O buffer */ 45 size_t iobufsiz; /* size of stdio I/O buffer */ 46 47 int main(int, char **); 48 49 int 50 main(int argc, char *argv[]) 51 { 52 FS *tfs; 53 char *p; 54 55 if (!(p = strrchr(argv[0], 'o')) || strcmp(p, "od")) 56 newsyntax(argc, &argv); 57 else 58 oldsyntax(argc, &argv); 59 60 /* figure out the data block size */ 61 for (blocksize = 0, tfs = fshead; tfs; tfs = tfs->nextfs) { 62 tfs->bcnt = size(tfs); 63 if (blocksize < tfs->bcnt) 64 blocksize = tfs->bcnt; 65 } 66 if (length != -1) { 67 iobufsiz = MIN(length, blocksize); 68 if ((iobuf = malloc(iobufsiz)) == NULL) 69 err(1, NULL); 70 } 71 /* rewrite the rules, do syntax checking */ 72 for (tfs = fshead; tfs; tfs = tfs->nextfs) 73 rewrite(tfs); 74 75 (void)next(argv); 76 display(); 77 exit(exitval); 78 }