447 lines
9.6 KiB
C
447 lines
9.6 KiB
C
/*-
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* Copyright (c) 1990, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)odsyntax.c 8.2 (Berkeley) 5/4/95";
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#endif
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static const char rcsid[] =
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"$FreeBSD$";
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#endif /* not lint */
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#include <sys/types.h>
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#include <ctype.h>
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#include <err.h>
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#include <errno.h>
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#include <float.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include "hexdump.h"
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#define PADDING " "
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int odmode;
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static void odadd(const char *);
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static void odformat(const char *);
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static const char *odformatfp(char, const char *);
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static const char *odformatint(char, const char *);
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static void odoffset(int, char ***);
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static void odusage(void);
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void
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oldsyntax(argc, argvp)
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int argc;
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char ***argvp;
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{
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static char empty[] = "", padding[] = PADDING;
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int ch;
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char **argv, *end;
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/* Add initial (default) address format. -A may change it later. */
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#define TYPE_OFFSET 7
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add("\"%07.7_Ao\n\"");
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add("\"%07.7_ao \"");
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odmode = 1;
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argv = *argvp;
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while ((ch = getopt(argc, argv, "A:aBbcDdeFfHhIij:LlN:Oost:vXx")) != -1)
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switch (ch) {
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case 'A':
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switch (*optarg) {
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case 'd': case 'o': case 'x':
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fshead->nextfu->fmt[TYPE_OFFSET] = *optarg;
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fshead->nextfs->nextfu->fmt[TYPE_OFFSET] =
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*optarg;
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break;
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case 'n':
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fshead->nextfu->fmt = empty;
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fshead->nextfs->nextfu->fmt = padding;
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break;
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default:
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errx(1, "%s: invalid address base", optarg);
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}
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break;
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case 'a':
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odformat("a");
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break;
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case 'B':
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case 'o':
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odformat("o2");
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break;
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case 'b':
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odformat("o1");
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break;
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case 'c':
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odformat("c");
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break;
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case 'd':
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odformat("u2");
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break;
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case 'D':
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odformat("u4");
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break;
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case 'e': /* undocumented in od */
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case 'F':
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odformat("fD");
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break;
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case 'f':
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odformat("fF");
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break;
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case 'H':
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case 'X':
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odformat("x4");
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break;
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case 'h':
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case 'x':
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odformat("x2");
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break;
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case 'I':
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case 'L':
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case 'l':
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odformat("dL");
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break;
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case 'i':
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odformat("dI");
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break;
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case 'j':
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errno = 0;
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skip = strtoll(optarg, &end, 0);
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if (*end == 'b')
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skip *= 512;
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else if (*end == 'k')
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skip *= 1024;
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else if (*end == 'm')
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skip *= 1048576L;
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if (errno != 0 || skip < 0 || strlen(end) > 1)
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errx(1, "%s: invalid skip amount", optarg);
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break;
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case 'N':
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if ((length = atoi(optarg)) <= 0)
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errx(1, "%s: invalid length", optarg);
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break;
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case 'O':
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odformat("o4");
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break;
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case 's':
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odformat("d2");
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break;
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case 't':
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odformat(optarg);
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break;
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case 'v':
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vflag = ALL;
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break;
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case '?':
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default:
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odusage();
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}
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if (fshead->nextfs->nextfs == NULL)
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odformat("oS");
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argc -= optind;
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*argvp += optind;
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if (argc)
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odoffset(argc, argvp);
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}
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static void
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odusage(void)
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{
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fprintf(stderr,
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"usage: od [-aBbcDdeFfHhIiLlOosvXx] [-A base] [-j skip] [-N length] [-t type]\n");
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fprintf(stderr,
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" [[+]offset[.][Bb]] [file ...]\n");
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exit(1);
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}
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static void
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odoffset(argc, argvp)
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int argc;
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char ***argvp;
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{
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unsigned char *p, *num, *end;
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int base;
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/*
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* The offset syntax of od(1) was genuinely bizarre. First, if
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* it started with a plus it had to be an offset. Otherwise, if
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* there were at least two arguments, a number or lower-case 'x'
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* followed by a number makes it an offset. By default it was
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* octal; if it started with 'x' or '0x' it was hex. If it ended
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* in a '.', it was decimal. If a 'b' or 'B' was appended, it
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* multiplied the number by 512 or 1024 byte units. There was
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* no way to assign a block count to a hex offset.
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*
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* We assume it's a file if the offset is bad.
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*/
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p = argc == 1 ? (*argvp)[0] : (*argvp)[1];
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if (*p != '+' && (argc < 2 ||
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(!isdigit(p[0]) && (p[0] != 'x' || !isxdigit(p[1])))))
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return;
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base = 0;
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/*
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* skip over leading '+', 'x[0-9a-fA-f]' or '0x', and
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* set base.
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*/
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if (p[0] == '+')
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++p;
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if (p[0] == 'x' && isxdigit(p[1])) {
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++p;
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base = 16;
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} else if (p[0] == '0' && p[1] == 'x') {
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p += 2;
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base = 16;
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}
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/* skip over the number */
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if (base == 16)
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for (num = p; isxdigit(*p); ++p);
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else
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for (num = p; isdigit(*p); ++p);
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/* check for no number */
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if (num == p)
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return;
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/* if terminates with a '.', base is decimal */
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if (*p == '.') {
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if (base)
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return;
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base = 10;
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}
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skip = strtoll(num, (char **)&end, base ? base : 8);
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/* if end isn't the same as p, we got a non-octal digit */
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if (end != p) {
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skip = 0;
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return;
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}
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if (*p) {
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if (*p == 'B') {
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skip *= 1024;
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++p;
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} else if (*p == 'b') {
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skip *= 512;
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++p;
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}
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}
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if (*p) {
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skip = 0;
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return;
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}
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/*
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* If the offset uses a non-octal base, the base of the offset
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* is changed as well. This isn't pretty, but it's easy.
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*/
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if (base == 16) {
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fshead->nextfu->fmt[TYPE_OFFSET] = 'x';
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fshead->nextfs->nextfu->fmt[TYPE_OFFSET] = 'x';
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} else if (base == 10) {
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fshead->nextfu->fmt[TYPE_OFFSET] = 'd';
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fshead->nextfs->nextfu->fmt[TYPE_OFFSET] = 'd';
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}
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/* Terminate file list. */
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(*argvp)[1] = NULL;
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}
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static void
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odformat(const char *fmt)
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{
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char fchar;
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while (*fmt != '\0') {
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switch ((fchar = *fmt++)) {
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case 'a':
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odadd("16/1 \"%3_u \" \"\\n\"");
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break;
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case 'c':
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odadd("16/1 \"%3_c \" \"\\n\"");
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break;
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case 'o': case 'u': case 'd': case 'x':
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fmt = odformatint(fchar, fmt);
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break;
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case 'f':
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fmt = odformatfp(fchar, fmt);
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break;
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default:
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errx(1, "%c: unrecognised format character", fchar);
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}
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}
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}
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static const char *
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odformatfp(char fchar __unused, const char *fmt)
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{
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size_t isize;
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int digits;
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char *end, *hdfmt;
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isize = sizeof(double);
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switch (*fmt) {
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case 'F':
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isize = sizeof(float);
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fmt++;
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break;
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case 'D':
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isize = sizeof(double);
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fmt++;
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break;
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case 'L':
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isize = sizeof(long double);
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fmt++;
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break;
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default:
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if (isdigit((unsigned char)*fmt)) {
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errno = 0;
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isize = (size_t)strtoul(fmt, &end, 10);
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if (errno != 0 || isize == 0)
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errx(1, "%s: invalid size", fmt);
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fmt = (const char *)end;
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}
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}
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switch (isize) {
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case sizeof(float):
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digits = FLT_DIG;
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break;
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case sizeof(double):
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digits = DBL_DIG;
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break;
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default:
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if (isize == sizeof(long double))
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digits = LDBL_DIG;
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else
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errx(1, "unsupported floating point size %lu",
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(u_long)isize);
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}
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asprintf(&hdfmt, "%lu/%lu \" %%%d.%de \" \"\\n\"",
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16UL / (u_long)isize, (u_long)isize, digits + 8, digits);
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if (hdfmt == NULL)
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err(1, NULL);
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odadd(hdfmt);
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free(hdfmt);
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return (fmt);
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}
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static const char *
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odformatint(char fchar, const char *fmt)
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{
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unsigned long long n;
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size_t isize;
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int digits;
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char *end, *hdfmt;
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isize = sizeof(int);
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switch (*fmt) {
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case 'C':
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isize = sizeof(char);
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fmt++;
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break;
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case 'I':
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isize = sizeof(int);
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fmt++;
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break;
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case 'L':
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isize = sizeof(long);
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fmt++;
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break;
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case 'S':
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isize = sizeof(short);
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fmt++;
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break;
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default:
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if (isdigit((unsigned char)*fmt)) {
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errno = 0;
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isize = (size_t)strtoul(fmt, &end, 10);
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if (errno != 0 || isize == 0)
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errx(1, "%s: invalid size", fmt);
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if (isize != sizeof(char) && isize != sizeof(short) &&
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isize != sizeof(int) && isize != sizeof(long))
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errx(1, "unsupported int size %lu",
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(u_long)isize);
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fmt = (const char *)end;
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}
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}
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/*
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* Calculate the maximum number of digits we need to
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* fit the number. Overestimate for decimal with log
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* base 8. We need one extra space for signed numbers
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* to store the sign.
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*/
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n = (1ULL << (8 * isize)) - 1;
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digits = 0;
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while (n != 0) {
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digits++;
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n >>= (fchar == 'x') ? 4 : 3;
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}
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if (fchar == 'd')
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digits++;
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asprintf(&hdfmt, "%lu/%lu \"%*s%%%s%d%c\" \"\\n\"",
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16UL / (u_long)isize, (u_long)isize, (int)(4 * isize - digits),
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"", (fchar == 'd' || fchar == 'u') ? "" : "0", digits, fchar);
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if (hdfmt == NULL)
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err(1, NULL);
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odadd(hdfmt);
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free(hdfmt);
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return (fmt);
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}
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static void
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odadd(const char *fmt)
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{
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static int needpad;
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if (needpad)
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add("\""PADDING"\"");
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add(fmt);
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needpad = 1;
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}
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