2 * Copyright (c) 1989, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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 * 4. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * @(#)display.c 8.1 (Berkeley) 6/6/93
30 * $FreeBSD: src/usr.bin/hexdump/display.c,v 1.4.2.2 2002/07/23 14:27:06 tjr Exp $
31 * $DragonFly: src/usr.bin/hexdump/display.c,v 1.6 2005/04/10 20:55:38 drhodus Exp $
34 #include <sys/param.h>
45 enum _vflag vflag = FIRST;
47 static off_t address; /* address/offset in stream */
48 static off_t eaddress; /* end address */
50 static __inline void print(PR *, u_char *);
53 print(PR *pr, u_char *bp)
67 (void)printf(pr->fmt, (quad_t)address);
70 (void)printf(pr->fmt, "");
76 (void)printf(pr->fmt, *bp);
81 bcopy(bp, &f4, sizeof(f4));
82 (void)printf(pr->fmt, f4);
85 bcopy(bp, &f8, sizeof(f8));
86 (void)printf(pr->fmt, f8);
89 if (pr->bcnt == sizeof(long double)) {
90 bcopy(bp, &ldbl, sizeof(ldbl));
91 (void)printf(pr->fmt, ldbl);
99 (void)printf(pr->fmt, (quad_t)(signed char)*bp);
102 bcopy(bp, &s2, sizeof(s2));
103 (void)printf(pr->fmt, (quad_t)s2);
106 bcopy(bp, &s4, sizeof(s4));
107 (void)printf(pr->fmt, (quad_t)s4);
110 bcopy(bp, &s8, sizeof(s8));
111 (void)printf(pr->fmt, s8);
116 (void)printf(pr->fmt, isprint(*bp) ? *bp : '.');
119 (void)printf(pr->fmt, (char *)bp);
122 (void)printf("%s", pr->fmt);
130 (void)printf(pr->fmt, (u_quad_t)*bp);
133 bcopy(bp, &u2, sizeof(u2));
134 (void)printf(pr->fmt, (u_quad_t)u2);
137 bcopy(bp, &u4, sizeof(u4));
138 (void)printf(pr->fmt, (u_quad_t)u4);
141 bcopy(bp, &u8, sizeof(u8));
142 (void)printf(pr->fmt, u8);
159 u_char savech = '\0', *savebp;
162 for (fs = fshead, savebp = bp, saveaddress = address; fs;
163 fs = fs->nextfs, bp = savebp, address = saveaddress)
164 for (fu = fs->nextfu; fu; fu = fu->nextfu) {
165 if (fu->flags&F_IGNORE)
167 for (cnt = fu->reps; cnt; --cnt)
168 for (pr = fu->nextpr; pr; address += pr->bcnt,
169 bp += pr->bcnt, pr = pr->nextpr) {
170 if (eaddress && address >= eaddress &&
171 !(pr->flags & (F_TEXT|F_BPAD)))
173 if (cnt == 1 && pr->nospace) {
174 savech = *pr->nospace;
178 if (cnt == 1 && pr->nospace)
179 *pr->nospace = savech;
184 * If eaddress not set, error or file size was multiple of
185 * blocksize, and no partial block ever found.
192 for (pr = endfu->nextpr; pr; pr = pr->nextpr)
195 (void)printf(pr->fmt, (quad_t)eaddress);
198 (void)printf("%s", pr->fmt);
207 static char const *spec = " -0+#";
211 * Remove all conversion flags; '-' is the only one valid
212 * with %s, and it's not useful here.
217 for (p1 = pr->fmt; *p1 != '%'; ++p1);
218 for (p2 = ++p1; *p1 && strchr(spec, *p1); ++p1);
219 while ((*p2++ = *p1++));
227 static int ateof = 1;
228 static u_char *curp, *savp;
235 if ((curp = calloc(1, blocksize)) == NULL)
237 if ((savp = calloc(1, blocksize)) == NULL)
243 address += blocksize;
246 for (need = blocksize, nread = 0;;) {
248 * if read the right number of bytes, or at EOF for one file,
249 * and no other files are available, zero-pad the rest of the
250 * block and set the end flag.
252 if (!length || (ateof && !next(NULL))) {
253 if (odmode && address < skip)
254 errx(1, "cannot skip past end of input");
255 if (need == blocksize)
259 bcmp(curp, savp, nread) == 0) {
264 bzero((char *)curp + nread, need);
265 eaddress = address + nread;
268 n = fread((char *)curp + nread, sizeof(u_char),
269 length == -1 ? need : MIN(length, need), stdin);
272 warn("%s", _argv[-1]);
280 if (vflag == ALL || vflag == FIRST ||
282 bcmp(curp, savp, blocksize) != 0) {
283 if (vflag == DUP || vflag == FIRST)
290 address += blocksize;
310 if (!(freopen(*_argv, "r", stdin))) {
322 doskip(*_argv ? *_argv : "stdin");
332 doskip(const char *fname)
337 if (fstat(fileno(stdin), &sb))
339 if (S_ISREG(sb.st_mode) && skip >= sb.st_size) {
340 address += sb.st_size;
342 } else if (S_ISREG(sb.st_mode)) {
343 if (fseeko(stdin, skip, SEEK_SET))
348 for (cnt = 0; cnt < skip; ++cnt)
349 if (getchar() == EOF)