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Annotation of src/usr.bin/hexdump/odsyntax.c, Revision 1.1.1.1

1.1       deraadt     1: /*-
                      2:  * Copyright (c) 1990 The Regents of the University of California.
                      3:  * 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: /*static char sccsid[] = "from: @(#)odsyntax.c 5.4 (Berkeley) 3/8/91";*/
                     36: static char rcsid[] = "$Id: odsyntax.c,v 1.4 1993/08/01 18:14:46 mycroft Exp $";
                     37: #endif /* not lint */
                     38:
                     39: #include <sys/types.h>
                     40: #include <stdlib.h>
                     41: #include <stdio.h>
                     42: #include "hexdump.h"
                     43:
                     44: int deprecated;
                     45:
                     46: oldsyntax(argc, argvp)
                     47:        int argc;
                     48:        char ***argvp;
                     49: {
                     50:        extern enum _vflag vflag;
                     51:        extern FS *fshead;
                     52:        extern char *optarg;
                     53:        extern int length, optind;
                     54:        int ch;
                     55:        char **argv;
                     56:        static void odprecede();
                     57:
                     58:        deprecated = 1;
                     59:        argv = *argvp;
                     60:        while ((ch = getopt(argc, argv, "aBbcDdeFfHhIiLlOoPpswvXx")) != EOF)
                     61:                switch (ch) {
                     62:                case 'a':
                     63:                        odprecede();
                     64:                        add("16/1 \"%3_u \" \"\\n\"");
                     65:                        break;
                     66:                case 'B':
                     67:                case 'o':
                     68:                        odprecede();
                     69:                        add("8/2 \" %06o \" \"\\n\"");
                     70:                        break;
                     71:                case 'b':
                     72:                        odprecede();
                     73:                        add("16/1 \"%03o \" \"\\n\"");
                     74:                        break;
                     75:                case 'c':
                     76:                        odprecede();
                     77:                        add("16/1 \"%3_c \" \"\\n\"");
                     78:                        break;
                     79:                case 'd':
                     80:                        odprecede();
                     81:                        add("8/2 \"  %05u \" \"\\n\"");
                     82:                        break;
                     83:                case 'D':
                     84:                        odprecede();
                     85:                        add("4/4 \"     %010u \" \"\\n\"");
                     86:                        break;
                     87:                case 'e':               /* undocumented in od */
                     88:                case 'F':
                     89:                        odprecede();
                     90:                        add("2/8 \"          %21.14e \" \"\\n\"");
                     91:                        break;
                     92:
                     93:                case 'f':
                     94:                        odprecede();
                     95:                        add("4/4 \" %14.7e \" \"\\n\"");
                     96:                        break;
                     97:                case 'H':
                     98:                case 'X':
                     99:                        odprecede();
                    100:                        add("4/4 \"       %08x \" \"\\n\"");
                    101:                        break;
                    102:                case 'h':
                    103:                case 'x':
                    104:                        odprecede();
                    105:                        add("8/2 \"   %04x \" \"\\n\"");
                    106:                        break;
                    107:                case 'I':
                    108:                case 'L':
                    109:                case 'l':
                    110:                        odprecede();
                    111:                        add("4/4 \"    %11d \" \"\\n\"");
                    112:                        break;
                    113:                case 'i':
                    114:                        odprecede();
                    115:                        add("8/2 \" %6d \" \"\\n\"");
                    116:                        break;
                    117:                case 'O':
                    118:                        odprecede();
                    119:                        add("4/4 \"    %011o \" \"\\n\"");
                    120:                        break;
                    121:                case 'v':
                    122:                        vflag = ALL;
                    123:                        break;
                    124:                case 'P':
                    125:                case 'p':
                    126:                case 's':
                    127:                case 'w':
                    128:                case '?':
                    129:                default:
                    130:                        (void)fprintf(stderr,
                    131:                            "od: od(1) has been deprecated for hexdump(1).\n");
                    132:                        if (ch != '?')
                    133:                                (void)fprintf(stderr,
                    134: "od: hexdump(1) compatibility doesn't support the -%c option%s\n",
                    135:                                    ch, ch == 's' ? "; see strings(1)." : ".");
                    136:                        usage();
                    137:                }
                    138:
                    139:        if (!fshead) {
                    140:                add("\"%07.7_Ao\n\"");
                    141:                add("\"%07.7_ao  \" 8/2 \"%06o \" \"\\n\"");
                    142:        }
                    143:
                    144:        argc -= optind;
                    145:        *argvp += optind;
                    146:
                    147:        odoffset(argc, argvp);
                    148: }
                    149:
                    150: #define        ishexdigit(c) \
                    151:        (c >= '0' && c <= '9' || c >= 'a' && c <= 'f' || c >= 'A' && c <= 'F')
                    152:
                    153: odoffset(argc, argvp)
                    154:        int argc;
                    155:        char ***argvp;
                    156: {
                    157:        extern off_t skip;
                    158:        register char *num, *p;
                    159:        int base;
                    160:        char *end;
                    161:
                    162:        /*
                    163:         * The offset syntax of od(1) was genuinely bizarre.  First, if
                    164:         * it started with a plus it had to be an offset.  Otherwise, if
                    165:         * there were at least two arguments, a number or lower-case 'x'
                    166:         * followed by a number makes it an offset.  By default it was
                    167:         * octal; if it started with 'x' or '0x' it was hex.  If it ended
                    168:         * in a '.', it was decimal.  If a 'b' or 'B' was appended, it
                    169:         * multiplied the number by 512 or 1024 byte units.  There was
                    170:         * no way to assign a block count to a hex offset.
                    171:         *
                    172:         * We assumes it's a file if the offset is bad.
                    173:         */
                    174:        p = **argvp;
                    175:        if (!p)
                    176:                return;
                    177:        if (*p != '+' && (argc < 2 ||
                    178:            (!isdigit(p[0]) && (p[0] != 'x' || !ishexdigit(p[1])))))
                    179:                return;
                    180:
                    181:        base = 0;
                    182:        /*
                    183:         * skip over leading '+', 'x[0-9a-fA-f]' or '0x', and
                    184:         * set base.
                    185:         */
                    186:        if (p[0] == '+')
                    187:                ++p;
                    188:        if (p[0] == 'x' && ishexdigit(p[1])) {
                    189:                ++p;
                    190:                base = 16;
                    191:        } else if (p[0] == '0' && p[1] == 'x') {
                    192:                p += 2;
                    193:                base = 16;
                    194:        }
                    195:
                    196:        /* skip over the number */
                    197:        if (base == 16)
                    198:                for (num = p; ishexdigit(*p); ++p);
                    199:        else
                    200:                for (num = p; isdigit(*p); ++p);
                    201:
                    202:        /* check for no number */
                    203:        if (num == p)
                    204:                return;
                    205:
                    206:        /* if terminates with a '.', base is decimal */
                    207:        if (*p == '.') {
                    208:                if (base)
                    209:                        return;
                    210:                base = 10;
                    211:        }
                    212:
                    213:        skip = strtol(num, &end, base ? base : 8);
                    214:
                    215:        /* if end isn't the same as p, we got a non-octal digit */
                    216:        if (end != p)
                    217:                skip = 0;
                    218:        else {
                    219:                if (*p) {
                    220:                        if (*p == 'b')
                    221:                                skip *= 512;
                    222:                        else if (*p == 'B')
                    223:                                skip *= 1024;
                    224:                        ++p;
                    225:                }
                    226:                if (*p)
                    227:                        skip = 0;
                    228:                else {
                    229:                        ++*argvp;
                    230:                        /*
                    231:                         * If the offset uses a non-octal base, the base of
                    232:                         * the offset is changed as well.  This isn't pretty,
                    233:                         * but it's easy.
                    234:                         */
                    235: #define        TYPE_OFFSET     7
                    236:                        if (base == 16) {
                    237:                                fshead->nextfu->fmt[TYPE_OFFSET] = 'x';
                    238:                                fshead->nextfs->nextfu->fmt[TYPE_OFFSET] = 'x';
                    239:                        } else if (base == 10) {
                    240:                                fshead->nextfu->fmt[TYPE_OFFSET] = 'd';
                    241:                                fshead->nextfs->nextfu->fmt[TYPE_OFFSET] = 'd';
                    242:                        }
                    243:                }
                    244:        }
                    245: }
                    246:
                    247: static void
                    248: odprecede()
                    249: {
                    250:        static int first = 1;
                    251:
                    252:        if (first) {
                    253:                first = 0;
                    254:                add("\"%07.7_Ao\n\"");
                    255:                add("\"%07.7_ao  \"");
                    256:        } else
                    257:                add("\"         \"");
                    258: }