odsyntax.c revision 82766
1/*- 2 * Copyright (c) 1990, 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#if 0 36static char sccsid[] = "@(#)odsyntax.c 8.2 (Berkeley) 5/4/95"; 37#endif 38static const char rcsid[] = 39 "$FreeBSD: head/usr.bin/hexdump/odsyntax.c 82766 2001-09-01 22:42:47Z ache $"; 40#endif /* not lint */ 41 42#include <sys/types.h> 43 44#include <ctype.h> 45#include <err.h> 46#include <stdio.h> 47#include <stdlib.h> 48#include <unistd.h> 49 50#include "hexdump.h" 51 52int deprecated; 53 54static void odoffset __P((int, char ***)); 55static void odprecede __P((void)); 56 57void 58oldsyntax(argc, argvp) 59 int argc; 60 char ***argvp; 61{ 62 extern enum _vflag vflag; 63 extern FS *fshead; 64 int ch; 65 char **argv; 66 67 deprecated = 1; 68 argv = *argvp; 69 while ((ch = getopt(argc, argv, "aBbcDdeFfHhIiLlOoPpswvXx")) != -1) 70 switch (ch) { 71 case 'a': 72 odprecede(); 73 add("16/1 \"%3_u \" \"\\n\""); 74 break; 75 case 'B': 76 case 'o': 77 odprecede(); 78 add("8/2 \" %06o \" \"\\n\""); 79 break; 80 case 'b': 81 odprecede(); 82 add("16/1 \"%03o \" \"\\n\""); 83 break; 84 case 'c': 85 odprecede(); 86 add("16/1 \"%3_c \" \"\\n\""); 87 break; 88 case 'd': 89 odprecede(); 90 add("8/2 \" %05u \" \"\\n\""); 91 break; 92 case 'D': 93 odprecede(); 94 add("4/4 \" %010u \" \"\\n\""); 95 break; 96 case 'e': /* undocumented in od */ 97 case 'F': 98 odprecede(); 99 add("2/8 \" %21.14e \" \"\\n\""); 100 break; 101 102 case 'f': 103 odprecede(); 104 add("4/4 \" %14.7e \" \"\\n\""); 105 break; 106 case 'H': 107 case 'X': 108 odprecede(); 109 add("4/4 \" %08x \" \"\\n\""); 110 break; 111 case 'h': 112 case 'x': 113 odprecede(); 114 add("8/2 \" %04x \" \"\\n\""); 115 break; 116 case 'I': 117 case 'L': 118 case 'l': 119 odprecede(); 120 add("4/4 \" %11d \" \"\\n\""); 121 break; 122 case 'i': 123 odprecede(); 124 add("8/2 \" %6d \" \"\\n\""); 125 break; 126 case 'O': 127 odprecede(); 128 add("4/4 \" %011o \" \"\\n\""); 129 break; 130 case 'v': 131 vflag = ALL; 132 break; 133 case 'P': 134 case 'p': 135 case 's': 136 case 'w': 137 case '?': 138 default: 139 warnx("od(1) has been deprecated for hexdump(1)"); 140 if (ch != '?') 141 warnx("hexdump(1) compatibility doesn't support the -%c option%s", 142 ch, ch == 's' ? "; see strings(1)" : ""); 143 usage(); 144 } 145 146 if (!fshead) { 147 add("\"%07.7_Ao\n\""); 148 add("\"%07.7_ao \" 8/2 \"%06o \" \"\\n\""); 149 } 150 151 argc -= optind; 152 *argvp += optind; 153 154 if (argc) 155 odoffset(argc, argvp); 156} 157 158static void 159odoffset(argc, argvp) 160 int argc; 161 char ***argvp; 162{ 163 extern off_t skip; 164 unsigned char *p, *num, *end; 165 int base; 166 167 /* 168 * The offset syntax of od(1) was genuinely bizarre. First, if 169 * it started with a plus it had to be an offset. Otherwise, if 170 * there were at least two arguments, a number or lower-case 'x' 171 * followed by a number makes it an offset. By default it was 172 * octal; if it started with 'x' or '0x' it was hex. If it ended 173 * in a '.', it was decimal. If a 'b' or 'B' was appended, it 174 * multiplied the number by 512 or 1024 byte units. There was 175 * no way to assign a block count to a hex offset. 176 * 177 * We assume it's a file if the offset is bad. 178 */ 179 p = argc == 1 ? (*argvp)[0] : (*argvp)[1]; 180 181 if (*p != '+' && (argc < 2 || 182 (!isdigit(p[0]) && (p[0] != 'x' || !isxdigit(p[1]))))) 183 return; 184 185 base = 0; 186 /* 187 * skip over leading '+', 'x[0-9a-fA-f]' or '0x', and 188 * set base. 189 */ 190 if (p[0] == '+') 191 ++p; 192 if (p[0] == 'x' && isxdigit(p[1])) { 193 ++p; 194 base = 16; 195 } else if (p[0] == '0' && p[1] == 'x') { 196 p += 2; 197 base = 16; 198 } 199 200 /* skip over the number */ 201 if (base == 16) 202 for (num = p; isxdigit(*p); ++p); 203 else 204 for (num = p; isdigit(*p); ++p); 205 206 /* check for no number */ 207 if (num == p) 208 return; 209 210 /* if terminates with a '.', base is decimal */ 211 if (*p == '.') { 212 if (base) 213 return; 214 base = 10; 215 } 216 217 skip = strtoll(num, (char **)&end, base ? base : 8); 218 219 /* if end isn't the same as p, we got a non-octal digit */ 220 if (end != p) { 221 skip = 0; 222 return; 223 } 224 225 if (*p) { 226 if (*p == 'B') { 227 skip *= 1024; 228 ++p; 229 } else if (*p == 'b') { 230 skip *= 512; 231 ++p; 232 } 233 } 234 235 if (*p) { 236 skip = 0; 237 return; 238 } 239 240 /* 241 * If the offset uses a non-octal base, the base of the offset 242 * is changed as well. This isn't pretty, but it's easy. 243 */ 244#define TYPE_OFFSET 7 245 if (base == 16) { 246 fshead->nextfu->fmt[TYPE_OFFSET] = 'x'; 247 fshead->nextfs->nextfu->fmt[TYPE_OFFSET] = 'x'; 248 } else if (base == 10) { 249 fshead->nextfu->fmt[TYPE_OFFSET] = 'd'; 250 fshead->nextfs->nextfu->fmt[TYPE_OFFSET] = 'd'; 251 } 252 253 /* Terminate file list. */ 254 (*argvp)[1] = NULL; 255} 256 257static void 258odprecede() 259{ 260 static int first = 1; 261 262 if (first) { 263 first = 0; 264 add("\"%07.7_Ao\n\""); 265 add("\"%07.7_ao \""); 266 } else 267 add("\" \""); 268} 269