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 * 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.
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
36 static char sccsid[] = "@(#)display.c 8.1 (Berkeley) 6/6/93";
39 #include <sys/cdefs.h>
40 __FBSDID("$FreeBSD$");
42 #include <sys/param.h>
53 enum _vflag vflag = FIRST;
55 static off_t address; /* address/offset in stream */
56 static off_t eaddress; /* end address */
58 static void print(PR *, u_char *);
69 u_char savech, *savebp;
73 for (fs = fshead, savebp = bp, saveaddress = address; fs;
74 fs = fs->nextfs, bp = savebp, address = saveaddress)
75 for (fu = fs->nextfu; fu; fu = fu->nextfu) {
76 if (fu->flags&F_IGNORE)
78 for (cnt = fu->reps; cnt; --cnt)
79 for (pr = fu->nextpr; pr; address += pr->bcnt,
80 bp += pr->bcnt, pr = pr->nextpr) {
81 if (eaddress && address >= eaddress &&
82 !(pr->flags & (F_TEXT|F_BPAD)))
84 if (cnt == 1 && pr->nospace) {
85 savech = *pr->nospace;
89 if (cnt == 1 && pr->nospace)
90 *pr->nospace = savech;
95 * If eaddress not set, error or file size was multiple of
96 * blocksize, and no partial block ever found.
103 for (pr = endfu->nextpr; pr; pr = pr->nextpr)
106 (void)printf(pr->fmt, (quad_t)eaddress);
109 (void)printf("%s", pr->fmt);
116 print(PR *pr, u_char *bp)
130 (void)printf(pr->fmt, (quad_t)address);
133 (void)printf(pr->fmt, "");
136 conv_c(pr, bp, eaddress ? eaddress - address :
137 blocksize - address % blocksize);
140 (void)printf(pr->fmt, *bp);
145 bcopy(bp, &f4, sizeof(f4));
146 (void)printf(pr->fmt, f4);
149 bcopy(bp, &f8, sizeof(f8));
150 (void)printf(pr->fmt, f8);
153 if (pr->bcnt == sizeof(long double)) {
154 bcopy(bp, &ldbl, sizeof(ldbl));
155 (void)printf(pr->fmt, ldbl);
163 (void)printf(pr->fmt, (quad_t)(signed char)*bp);
166 bcopy(bp, &s2, sizeof(s2));
167 (void)printf(pr->fmt, (quad_t)s2);
170 bcopy(bp, &s4, sizeof(s4));
171 (void)printf(pr->fmt, (quad_t)s4);
174 bcopy(bp, &s8, sizeof(s8));
175 (void)printf(pr->fmt, s8);
180 (void)printf(pr->fmt, isprint(*bp) ? *bp : '.');
183 (void)printf(pr->fmt, (char *)bp);
186 (void)printf("%s", pr->fmt);
194 (void)printf(pr->fmt, (u_quad_t)*bp);
197 bcopy(bp, &u2, sizeof(u2));
198 (void)printf(pr->fmt, (u_quad_t)u2);
201 bcopy(bp, &u4, sizeof(u4));
202 (void)printf(pr->fmt, (u_quad_t)u4);
205 bcopy(bp, &u8, sizeof(u8));
206 (void)printf(pr->fmt, u8);
216 static char const *spec = " -0+#";
220 * Remove all conversion flags; '-' is the only one valid
221 * with %s, and it's not useful here.
226 for (p1 = pr->fmt; *p1 != '%'; ++p1);
227 for (p2 = ++p1; *p1 && index(spec, *p1); ++p1);
228 while ((*p2++ = *p1++));
236 static int ateof = 1;
237 static u_char *curp, *savp;
244 if ((curp = calloc(1, blocksize)) == NULL)
246 if ((savp = calloc(1, blocksize)) == NULL)
252 address += blocksize;
255 for (need = blocksize, nread = 0;;) {
257 * if read the right number of bytes, or at EOF for one file,
258 * and no other files are available, zero-pad the rest of the
259 * block and set the end flag.
261 if (!length || (ateof && !next((char **)NULL))) {
262 if (odmode && address < skip)
263 errx(1, "cannot skip past end of input");
264 if (need == blocksize)
265 return((u_char *)NULL);
267 * XXX bcmp() is not quite right in the presence
268 * of multibyte characters.
272 bcmp(curp, savp, nread) == 0) {
275 return((u_char *)NULL);
277 bzero((char *)curp + nread, need);
278 eaddress = address + nread;
281 n = fread((char *)curp + nread, sizeof(u_char),
282 length == -1 ? need : MIN(length, need), stdin);
285 warn("%s", _argv[-1]);
294 * XXX bcmp() is not quite right in the presence
295 * of multibyte characters.
297 if (vflag == ALL || vflag == FIRST ||
299 bcmp(curp, savp, blocksize) != 0) {
300 if (vflag == DUP || vflag == FIRST)
307 address += blocksize;
317 peek(u_char *buf, size_t nbytes)
322 if (length != -1 && nbytes > (unsigned int)length)
325 while (nread < nbytes && (c = getchar()) != EOF) {
350 if (!(freopen(*_argv, "r", stdin))) {
363 doskip(statok ? *_argv : "stdin", statok);
373 doskip(const char *fname, int statok)
379 if (fstat(fileno(stdin), &sb))
381 if (S_ISREG(sb.st_mode) && skip >= sb.st_size) {
382 address += sb.st_size;
387 if (S_ISREG(sb.st_mode)) {
388 if (fseeko(stdin, skip, SEEK_SET))
393 for (cnt = 0; cnt < skip; ++cnt)
394 if (getchar() == EOF)