libbb/dump.c

   1 /*
   2  * Support code for the hexdump and od applets,
   3  * based on code from util-linux v 2.11l
   4  *
   5  * Copyright (c) 1989
   6  *      The Regents of the University of California.  All rights reserved.
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  16  * General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  21  *
  22  * Original copyright notice is retained at the end of this file.
  23  */
  24
  25 #include <stdlib.h>
  26 #include <string.h>
  27 #include <ctype.h>              /* for isdigit() */
  28 #include "libbb.h"
  29 #include "dump.h"
  30
  31 enum _vflag bb_dump_vflag = FIRST;
  32 FS *bb_dump_fshead;                             /* head of format strings */
  33 static FU *endfu;
  34 static char **_argv;
  35 static off_t savaddress;        /* saved address/offset in stream */
  36 static off_t eaddress;  /* end address */
  37 static off_t address;   /* address/offset in stream */
  38 off_t bb_dump_skip;                             /* bytes to skip */
  39 static int exitval;                     /* final exit value */
  40 int bb_dump_blocksize;                  /* data block size */
  41 int bb_dump_length = -1;                /* max bytes to read */
  42
  43 static const char index_str[] = ".#-+ 0123456789";
  44
  45 static const char size_conv_str[] =
  46 "\x1\x4\x4\x4\x4\x4\x4\x8\x8\x8\x8\010cdiouxXeEfgG";
  47
  48 static const char lcc[] = "diouxX";
  49
  50 int bb_dump_size(FS * fs)
  51 {
  52         register FU *fu;
  53         register int bcnt, cur_size;
  54         register char *fmt;
  55         const char *p;
  56         int prec;
  57
  58         /* figure out the data block bb_dump_size needed for each format unit */
  59         for (cur_size = 0, fu = fs->nextfu; fu; fu = fu->nextfu) {
  60                 if (fu->bcnt) {
  61                         cur_size += fu->bcnt * fu->reps;
  62                         continue;
  63                 }
  64                 for (bcnt = prec = 0, fmt = fu->fmt; *fmt; ++fmt) {
  65                         if (*fmt != '%')
  66                                 continue;
  67                         /*
  68                          * bb_dump_skip any special chars -- save precision in
  69                          * case it's a %s format.
  70                          */
  71                         while (strchr(index_str + 1, *++fmt));
  72                         if (*fmt == '.' && isdigit(*++fmt)) {
  73                                 prec = atoi(fmt);
  74                                 while (isdigit(*++fmt));
  75                         }
  76                         if (!(p = strchr(size_conv_str + 12, *fmt))) {
  77                                 if (*fmt == 's') {
  78                                         bcnt += prec;
  79                                 } else if (*fmt == '_') {
  80                                         ++fmt;
  81                                         if ((*fmt == 'c') || (*fmt == 'p') || (*fmt == 'u')) {
  82                                                 bcnt += 1;
  83                                         }
  84                                 }
  85                         } else {
  86                                 bcnt += size_conv_str[p - (size_conv_str + 12)];
  87                         }
  88                 }
  89                 cur_size += bcnt * fu->reps;
  90         }
  91         return (cur_size);
  92 }
  93
  94 static void rewrite(FS * fs)
  95 {
  96         enum { NOTOKAY, USEBCNT, USEPREC } sokay;
  97         register PR *pr, **nextpr = NULL;
  98         register FU *fu;
  99         register char *p1, *p2, *p3;
 100         char savech, *fmtp;
 101         const char *byte_count_str;
 102         int nconv, prec = 0;
 103
 104         for (fu = fs->nextfu; fu; fu = fu->nextfu) {
 105                 /*
 106                  * break each format unit into print units; each
 107                  * conversion character gets its own.
 108                  */
 109                 for (nconv = 0, fmtp = fu->fmt; *fmtp; nextpr = &pr->nextpr) {
 110                         /* NOSTRICT */
 111                         /* DBU:[dvae@cray.com] calloc so that forward ptrs start out NULL*/
 112                         pr = (PR *) xcalloc(1,sizeof(PR));
 113                         if (!fu->nextpr)
 114                                 fu->nextpr = pr;
 115                         /* ignore nextpr -- its unused inside the loop and is
 116                          * uninitialized 1st time thru.
 117                          */
 118
 119                         /* bb_dump_skip preceding text and up to the next % sign */
 120                         for (p1 = fmtp; *p1 && *p1 != '%'; ++p1);
 121
 122                         /* only text in the string */
 123                         if (!*p1) {
 124                                 pr->fmt = fmtp;
 125                                 pr->flags = F_TEXT;
 126                                 break;
 127                         }
 128
 129                         /*
 130                          * get precision for %s -- if have a byte count, don't
 131                          * need it.
 132                          */
 133                         if (fu->bcnt) {
 134                                 sokay = USEBCNT;
 135                                 /* bb_dump_skip to conversion character */
 136                                 for (++p1; strchr(index_str, *p1); ++p1);
 137                         } else {
 138                                 /* bb_dump_skip any special chars, field width */
 139                                 while (strchr(index_str + 1, *++p1));
 140                                 if (*p1 == '.' && isdigit(*++p1)) {
 141                                         sokay = USEPREC;
 142                                         prec = atoi(p1);
 143                                         while (isdigit(*++p1));
 144                                 } else
 145                                         sokay = NOTOKAY;
 146                         }
 147
 148                         p2 = p1 + 1;    /* set end pointer */
 149
 150                         /*
 151                          * figure out the byte count for each conversion;
 152                          * rewrite the format as necessary, set up blank-
 153                          * pbb_dump_adding for end of data.
 154                          */
 155
 156                         if (*p1 == 'c') {
 157                                 pr->flags = F_CHAR;
 158                         DO_BYTE_COUNT_1:
 159                                 byte_count_str = "\001";
 160                         DO_BYTE_COUNT:
 161                                 if (fu->bcnt) {
 162                                         do {
 163                                                 if (fu->bcnt == *byte_count_str) {
 164                                                         break;
 165                                                 }
 166                                         } while (*++byte_count_str);
 167                                 }
 168                                 /* Unlike the original, output the remainder of the format string. */
 169                                 if (!*byte_count_str) {
 170                                         bb_error_msg_and_die("bad byte count for conversion character %s.", p1);
 171                                 }
 172                                 pr->bcnt = *byte_count_str;
 173                         } else if (*p1 == 'l') {
 174                                 ++p2;
 175                                 ++p1;
 176                         DO_INT_CONV:
 177                                 {
 178                                         const char *e;
 179                                         if (!(e = strchr(lcc, *p1))) {
 180                                                 goto DO_BAD_CONV_CHAR;
 181                                         }
 182                                         pr->flags = F_INT;
 183                                         if (e > lcc + 1) {
 184                                                 pr->flags = F_UINT;
 185                                         }
 186                                         byte_count_str = "\004\002\001";
 187                                         goto DO_BYTE_COUNT;
 188                                 }
 189                                 /* NOTREACHED */
 190                         } else if (strchr(lcc, *p1)) {
 191                                 goto DO_INT_CONV;
 192                         } else if (strchr("eEfgG", *p1)) {
 193                                 pr->flags = F_DBL;
 194                                 byte_count_str = "\010\004";
 195                                 goto DO_BYTE_COUNT;
 196                         } else if (*p1 == 's') {
 197                                 pr->flags = F_STR;
 198                                 if (sokay == USEBCNT) {
 199                                         pr->bcnt = fu->bcnt;
 200                                 } else if (sokay == USEPREC) {
 201                                         pr->bcnt = prec;
 202                                 } else {        /* NOTOKAY */
 203                                         bb_error_msg_and_die("%%s requires a precision or a byte count.");
 204                                 }
 205                         } else if (*p1 == '_') {
 206                                 ++p2;
 207                                 switch (p1[1]) {
 208                                 case 'A':
 209                                         endfu = fu;
 210                                         fu->flags |= F_IGNORE;
 211                                         /* FALLTHROUGH */
 212                                 case 'a':
 213                                         pr->flags = F_ADDRESS;
 214                                         ++p2;
 215                                         if ((p1[2] != 'd') && (p1[2] != 'o') && (p1[2] != 'x')) {
 216                                                 goto DO_BAD_CONV_CHAR;
 217                                         }
 218                                         *p1 = p1[2];
 219                                         break;
 220                                 case 'c':
 221                                         pr->flags = F_C;
 222                                         /* *p1 = 'c';   set in conv_c */
 223                                         goto DO_BYTE_COUNT_1;
 224                                 case 'p':
 225                                         pr->flags = F_P;
 226                                         *p1 = 'c';
 227                                         goto DO_BYTE_COUNT_1;
 228                                 case 'u':
 229                                         pr->flags = F_U;
 230                                         /* *p1 = 'c';   set in conv_u */
 231                                         goto DO_BYTE_COUNT_1;
 232                                 default:
 233                                         goto DO_BAD_CONV_CHAR;
 234                                 }
 235                         } else {
 236                         DO_BAD_CONV_CHAR:
 237                                 bb_error_msg_and_die("bad conversion character %%%s.\n", p1);
 238                         }
 239
 240                         /*
 241                          * copy to PR format string, set conversion character
 242                          * pointer, update original.
 243                          */
 244                         savech = *p2;
 245                         p1[1] = '\0';
 246                         pr->fmt = bb_xstrdup(fmtp);
 247                         *p2 = savech;
 248                         pr->cchar = pr->fmt + (p1 - fmtp);
 249
 250                         /* DBU:[dave@cray.com] w/o this, trailing fmt text, space is lost.
 251                          * Skip subsequent text and up to the next % sign and tack the
 252                          * additional text onto fmt: eg. if fmt is "%x is a HEX number",
 253                          * we lose the " is a HEX number" part of fmt.
 254                          */
 255                         for (p3 = p2; *p3 && *p3 != '%'; p3++);
 256                         if (p3 > p2)
 257                         {
 258                                 savech = *p3;
 259                                 *p3 = '\0';
 260                                 if (!(pr->fmt = realloc(pr->fmt, strlen(pr->fmt)+(p3-p2)+1)))
 261                                         bb_perror_msg_and_die("hexdump");
 262                                 strcat(pr->fmt, p2);
 263                                 *p3 = savech;
 264                                 p2 = p3;
 265                         }
 266
 267                         fmtp = p2;
 268
 269                         /* only one conversion character if byte count */
 270                         if (!(pr->flags & F_ADDRESS) && fu->bcnt && nconv++) {
 271                                 bb_error_msg_and_die("byte count with multiple conversion characters.\n");
 272                         }
 273                 }
 274                 /*
 275                  * if format unit byte count not specified, figure it out
 276                  * so can adjust rep count later.
 277                  */
 278                 if (!fu->bcnt)
 279                         for (pr = fu->nextpr; pr; pr = pr->nextpr)
 280                                 fu->bcnt += pr->bcnt;
 281         }
 282         /*
 283          * if the format string interprets any data at all, and it's
 284          * not the same as the bb_dump_blocksize, and its last format unit
 285          * interprets any data at all, and has no iteration count,
 286          * repeat it as necessary.
 287          *
 288          * if, rep count is greater than 1, no trailing whitespace
 289          * gets output from the last iteration of the format unit.
 290          */
 291         for (fu = fs->nextfu;; fu = fu->nextfu) {
 292                 if (!fu->nextfu && fs->bcnt < bb_dump_blocksize &&
 293                         !(fu->flags & F_SETREP) && fu->bcnt)
 294                         fu->reps += (bb_dump_blocksize - fs->bcnt) / fu->bcnt;
 295                 if (fu->reps > 1) {
 296                         for (pr = fu->nextpr;; pr = pr->nextpr)
 297                                 if (!pr->nextpr)
 298                                         break;
 299                         for (p1 = pr->fmt, p2 = NULL; *p1; ++p1)
 300                                 p2 = isspace(*p1) ? p1 : NULL;
 301                         if (p2)
 302                                 pr->nospace = p2;
 303                 }
 304                 if (!fu->nextfu)
 305                         break;
 306         }
 307 }
 308
 309 static void do_skip(char *fname, int statok)
 310 {
 311         struct stat sbuf;
 312
 313         if (statok) {
 314                 if (fstat(fileno(stdin), &sbuf)) {
 315                         bb_perror_msg_and_die("%s", fname);
 316                 }
 317                 if ((!(S_ISCHR(sbuf.st_mode) ||
 318                            S_ISBLK(sbuf.st_mode) ||
 319                            S_ISFIFO(sbuf.st_mode))) && bb_dump_skip >= sbuf.st_size) {
 320                         /* If bb_dump_size valid and bb_dump_skip >= size */
 321                         bb_dump_skip -= sbuf.st_size;
 322                         address += sbuf.st_size;
 323                         return;
 324                 }
 325         }
 326         if (fseek(stdin, bb_dump_skip, SEEK_SET)) {
 327                 bb_perror_msg_and_die("%s", fname);
 328         }
 329         savaddress = address += bb_dump_skip;
 330         bb_dump_skip = 0;
 331 }
 332
 333 static int next(char **argv)
 334 {
 335         static int done;
 336         int statok;
 337
 338         if (argv) {
 339                 _argv = argv;
 340                 return (1);
 341         }
 342         for (;;) {
 343                 if (*_argv) {
 344                         if (!(freopen(*_argv, "r", stdin))) {
 345                                 bb_perror_msg("%s", *_argv);
 346                                 exitval = 1;
 347                                 ++_argv;
 348                                 continue;
 349                         }
 350                         statok = done = 1;
 351                 } else {
 352                         if (done++)
 353                                 return (0);
 354                         statok = 0;
 355                 }
 356                 if (bb_dump_skip)
 357                         do_skip(statok ? *_argv : "stdin", statok);
 358                 if (*_argv)
 359                         ++_argv;
 360                 if (!bb_dump_skip)
 361                         return (1);
 362         }
 363         /* NOTREACHED */
 364 }
 365
 366 static u_char *get(void)
 367 {
 368         static int ateof = 1;
 369         static u_char *curp=NULL, *savp; /*DBU:[dave@cray.com]initialize curp */
 370         register int n;
 371         int need, nread;
 372         u_char *tmpp;
 373
 374         if (!curp) {
 375                 address = (off_t)0; /*DBU:[dave@cray.com] initialize,initialize..*/
 376                 curp = (u_char *) xmalloc(bb_dump_blocksize);
 377                 savp = (u_char *) xmalloc(bb_dump_blocksize);
 378         } else {
 379                 tmpp = curp;
 380                 curp = savp;
 381                 savp = tmpp;
 382                 address = savaddress += bb_dump_blocksize;
 383         }
 384         for (need = bb_dump_blocksize, nread = 0;;) {
 385                 /*
 386                  * if read the right number of bytes, or at EOF for one file,
 387                  * and no other files are available, zero-pad the rest of the
 388                  * block and set the end flag.
 389                  */
 390                 if (!bb_dump_length || (ateof && !next((char **) NULL))) {
 391                         if (need == bb_dump_blocksize) {
 392                                 return ((u_char *) NULL);
 393                         }
 394                         if (bb_dump_vflag != ALL && !bcmp(curp, savp, nread)) {
 395                                 if (bb_dump_vflag != DUP) {
 396                                         printf("*\n");
 397                                 }
 398                                 return ((u_char *) NULL);
 399                         }
 400                         bzero((char *) curp + nread, need);
 401                         eaddress = address + nread;
 402                         return (curp);
 403                 }
 404                 n = fread((char *) curp + nread, sizeof(u_char),
 405                                   bb_dump_length == -1 ? need : MIN(bb_dump_length, need), stdin);
 406                 if (!n) {
 407                         if (ferror(stdin)) {
 408                                 bb_perror_msg("%s", _argv[-1]);
 409                         }
 410                         ateof = 1;
 411                         continue;
 412                 }
 413                 ateof = 0;
 414                 if (bb_dump_length != -1) {
 415                         bb_dump_length -= n;
 416                 }
 417                 if (!(need -= n)) {
 418                         if (bb_dump_vflag == ALL || bb_dump_vflag == FIRST
 419                                 || bcmp(curp, savp, bb_dump_blocksize)) {
 420                                 if (bb_dump_vflag == DUP || bb_dump_vflag == FIRST) {
 421                                         bb_dump_vflag = WAIT;
 422                                 }
 423                                 return (curp);
 424                         }
 425                         if (bb_dump_vflag == WAIT) {
 426                                 printf("*\n");
 427                         }
 428                         bb_dump_vflag = DUP;
 429                         address = savaddress += bb_dump_blocksize;
 430                         need = bb_dump_blocksize;
 431                         nread = 0;
 432                 } else {
 433                         nread += n;
 434                 }
 435         }
 436 }
 437
 438 static void bpad(PR * pr)
 439 {
 440         register char *p1, *p2;
 441
 442         /*
 443          * remove all conversion flags; '-' is the only one valid
 444          * with %s, and it's not useful here.
 445          */
 446         pr->flags = F_BPAD;
 447         *pr->cchar = 's';
 448         for (p1 = pr->fmt; *p1 != '%'; ++p1);
 449         for (p2 = ++p1; *p1 && strchr(" -0+#", *p1); ++p1);
 450         while ((*p2++ = *p1++) != 0);
 451 }
 452
 453 static const char conv_str[] =
 454         "\0\\0\0"
 455         "\007\\a\0"                             /* \a */
 456         "\b\\b\0"
 457         "\f\\b\0"
 458         "\n\\n\0"
 459         "\r\\r\0"
 460         "\t\\t\0"
 461         "\v\\v\0"
 462         "\0";
 463
 464
 465 static void conv_c(PR * pr, u_char * p)
 466 {
 467         const char *str = conv_str;
 468         char buf[10];
 469
 470         do {
 471                 if (*p == *str) {
 472                         ++str;
 473                         goto strpr;
 474                 }
 475                 str += 4;
 476         } while (*str);
 477
 478         if (isprint(*p)) {
 479                 *pr->cchar = 'c';
 480                 (void) printf(pr->fmt, *p);
 481         } else {
 482                 sprintf(buf, "%03o", (int) *p);
 483                 str = buf;
 484           strpr:
 485                 *pr->cchar = 's';
 486                 printf(pr->fmt, str);
 487         }
 488 }
 489
 490 static void conv_u(PR * pr, u_char * p)
 491 {
 492         static const char list[] =
 493                 "nul\0soh\0stx\0etx\0eot\0enq\0ack\0bel\0"
 494                 "bs\0_ht\0_lf\0_vt\0_ff\0_cr\0_so\0_si\0_"
 495                 "dle\0dcl\0dc2\0dc3\0dc4\0nak\0syn\0etb\0"
 496                 "can\0em\0_sub\0esc\0fs\0_gs\0_rs\0_us";
 497
 498         /* od used nl, not lf */
 499         if (*p <= 0x1f) {
 500                 *pr->cchar = 's';
 501                 printf(pr->fmt, list[4 * (int)(*p)]);
 502         } else if (*p == 0x7f) {
 503                 *pr->cchar = 's';
 504                 printf(pr->fmt, "del");
 505         } else if (isprint(*p)) {
 506                 *pr->cchar = 'c';
 507                 printf(pr->fmt, *p);
 508         } else {
 509                 *pr->cchar = 'x';
 510                 printf(pr->fmt, (int) *p);
 511         }
 512 }
 513
 514 static void display(void)
 515 {
 516 /*  extern FU *endfu; */
 517         register FS *fs;
 518         register FU *fu;
 519         register PR *pr;
 520         register int cnt;
 521         register u_char *bp;
 522
 523         off_t saveaddress;
 524         u_char savech = 0, *savebp;
 525
 526         while ((bp = get()) != NULL) {
 527                 for (fs = bb_dump_fshead, savebp = bp, saveaddress = address; fs;
 528                          fs = fs->nextfs, bp = savebp, address = saveaddress) {
 529                         for (fu = fs->nextfu; fu; fu = fu->nextfu) {
 530                                 if (fu->flags & F_IGNORE) {
 531                                         break;
 532                                 }
 533                                 for (cnt = fu->reps; cnt; --cnt) {
 534                                         for (pr = fu->nextpr; pr; address += pr->bcnt,
 535                                                  bp += pr->bcnt, pr = pr->nextpr) {
 536                                                 if (eaddress && address >= eaddress &&
 537                                                         !(pr->flags & (F_TEXT | F_BPAD))) {
 538                                                         bpad(pr);
 539                                                 }
 540                                                 if (cnt == 1 && pr->nospace) {
 541                                                         savech = *pr->nospace;
 542                                                         *pr->nospace = '\0';
 543                                                 }
 544 /*                      PRINT; */
 545                                                 switch (pr->flags) {
 546                                                 case F_ADDRESS:
 547                                                         printf(pr->fmt, address);
 548                                                         break;
 549                                                 case F_BPAD:
 550                                                         printf(pr->fmt, "");
 551                                                         break;
 552                                                 case F_C:
 553                                                         conv_c(pr, bp);
 554                                                         break;
 555                                                 case F_CHAR:
 556                                                         printf(pr->fmt, *bp);
 557                                                         break;
 558                                                 case F_DBL:{
 559                                                         double dval;
 560                                                         float fval;
 561
 562                                                         switch (pr->bcnt) {
 563                                                         case 4:
 564                                                                 bcopy((char *) bp, (char *) &fval,
 565                                                                           sizeof(fval));
 566                                                                 printf(pr->fmt, fval);
 567                                                                 break;
 568                                                         case 8:
 569                                                                 bcopy((char *) bp, (char *) &dval,
 570                                                                           sizeof(dval));
 571                                                                 printf(pr->fmt, dval);
 572                                                                 break;
 573                                                         }
 574                                                         break;
 575                                                 }
 576                                                 case F_INT:{
 577                                                         int ival;
 578                                                         short sval;
 579
 580                                                         switch (pr->bcnt) {
 581                                                         case 1:
 582                                                                 printf(pr->fmt, (int) *bp);
 583                                                                 break;
 584                                                         case 2:
 585                                                                 bcopy((char *) bp, (char *) &sval,
 586                                                                           sizeof(sval));
 587                                                                 printf(pr->fmt, (int) sval);
 588                                                                 break;
 589                                                         case 4:
 590                                                                 bcopy((char *) bp, (char *) &ival,
 591                                                                           sizeof(ival));
 592                                                                 printf(pr->fmt, ival);
 593                                                                 break;
 594                                                         }
 595                                                         break;
 596                                                 }
 597                                                 case F_P:
 598                                                         printf(pr->fmt, isprint(*bp) ? *bp : '.');
 599                                                         break;
 600                                                 case F_STR:
 601                                                         printf(pr->fmt, (char *) bp);
 602                                                         break;
 603                                                 case F_TEXT:
 604                                                         printf(pr->fmt);
 605                                                         break;
 606                                                 case F_U:
 607                                                         conv_u(pr, bp);
 608                                                         break;
 609                                                 case F_UINT:{
 610                                                         unsigned int ival;
 611                                                         unsigned short sval;
 612
 613                                                         switch (pr->bcnt) {
 614                                                         case 1:
 615                                                                 printf(pr->fmt, (unsigned int) * bp);
 616                                                                 break;
 617                                                         case 2:
 618                                                                 bcopy((char *) bp, (char *) &sval,
 619                                                                           sizeof(sval));
 620                                                                 printf(pr->fmt, (unsigned int) sval);
 621                                                                 break;
 622                                                         case 4:
 623                                                                 bcopy((char *) bp, (char *) &ival,
 624                                                                           sizeof(ival));
 625                                                                 printf(pr->fmt, ival);
 626                                                                 break;
 627                                                         }
 628                                                         break;
 629                                                 }
 630                                                 }
 631                                                 if (cnt == 1 && pr->nospace) {
 632                                                         *pr->nospace = savech;
 633                                                 }
 634                                         }
 635                                 }
 636                         }
 637                 }
 638         }
 639         if (endfu) {
 640                 /*
 641                  * if eaddress not set, error or file bb_dump_size was multiple of
 642                  * bb_dump_blocksize, and no partial block ever found.
 643                  */
 644                 if (!eaddress) {
 645                         if (!address) {
 646                                 return;
 647                         }
 648                         eaddress = address;
 649                 }
 650                 for (pr = endfu->nextpr; pr; pr = pr->nextpr) {
 651                         switch (pr->flags) {
 652                         case F_ADDRESS:
 653                                 (void) printf(pr->fmt, (unsigned int) eaddress);
 654                                 break;
 655                         case F_TEXT:
 656                                 (void) printf(pr->fmt);
 657                                 break;
 658                         }
 659                 }
 660         }
 661 }
 662
 663 int bb_dump_dump(char **argv)
 664 {
 665         register FS *tfs;
 666
 667         /* figure out the data block bb_dump_size */
 668         for (bb_dump_blocksize = 0, tfs = bb_dump_fshead; tfs; tfs = tfs->nextfs) {
 669                 tfs->bcnt = bb_dump_size(tfs);
 670                 if (bb_dump_blocksize < tfs->bcnt) {
 671                         bb_dump_blocksize = tfs->bcnt;
 672                 }
 673         }
 674         /* rewrite the rules, do syntax checking */
 675         for (tfs = bb_dump_fshead; tfs; tfs = tfs->nextfs) {
 676                 rewrite(tfs);
 677         }
 678
 679         next(argv);
 680         display();
 681
 682         return (exitval);
 683 }
 684
 685 void bb_dump_add(const char *fmt)
 686 {
 687         register const char *p;
 688         register char *p1;
 689         register char *p2;
 690         static FS **nextfs;
 691         FS *tfs;
 692         FU *tfu, **nextfu;
 693         const char *savep;
 694
 695         /* start new linked list of format units */
 696         /* NOSTRICT */
 697         tfs = (FS *) xcalloc(1,sizeof(FS)); /*DBU:[dave@cray.com] start out NULL */
 698         if (!bb_dump_fshead) {
 699                 bb_dump_fshead = tfs;
 700         } else {
 701                 *nextfs = tfs;
 702         }
 703         nextfs = &tfs->nextfs;
 704         nextfu = &tfs->nextfu;
 705
 706         /* take the format string and break it up into format units */
 707         for (p = fmt;;) {
 708                 /* bb_dump_skip leading white space */
 709                 p = bb_skip_whitespace(p);
 710                 if (!*p) {
 711                         break;
 712                 }
 713
 714                 /* allocate a new format unit and link it in */
 715                 /* NOSTRICT */
 716                 /* DBU:[dave@cray.com] calloc so that forward pointers start out NULL */
 717                 tfu = (FU *) xcalloc(1,sizeof(FU));
 718                 *nextfu = tfu;
 719                 nextfu = &tfu->nextfu;
 720                 tfu->reps = 1;
 721
 722                 /* if leading digit, repetition count */
 723                 if (isdigit(*p)) {
 724                         for (savep = p; isdigit(*p); ++p);
 725                         if (!isspace(*p) && *p != '/') {
 726                                 bb_error_msg_and_die("bad format {%s}", fmt);
 727                         }
 728                         /* may overwrite either white space or slash */
 729                         tfu->reps = atoi(savep);
 730                         tfu->flags = F_SETREP;
 731                         /* bb_dump_skip trailing white space */
 732                         p = bb_skip_whitespace(++p);
 733                 }
 734
 735                 /* bb_dump_skip slash and trailing white space */
 736                 if (*p == '/') {
 737                         p = bb_skip_whitespace(++p);
 738                 }
 739
 740                 /* byte count */
 741                 if (isdigit(*p)) {
 742                         for (savep = p; isdigit(*p); ++p);
 743                         if (!isspace(*p)) {
 744                                 bb_error_msg_and_die("bad format {%s}", fmt);
 745                         }
 746                         tfu->bcnt = atoi(savep);
 747                         /* bb_dump_skip trailing white space */
 748                         p = bb_skip_whitespace(++p);
 749                 }
 750
 751                 /* format */
 752                 if (*p != '"') {
 753                         bb_error_msg_and_die("bad format {%s}", fmt);
 754                 }
 755                 for (savep = ++p; *p != '"';) {
 756                         if (*p++ == 0) {
 757                                 bb_error_msg_and_die("bad format {%s}", fmt);
 758                         }
 759                 }
 760                 tfu->fmt = xmalloc(p - savep + 1);
 761                 strncpy(tfu->fmt, savep, p - savep);
 762                 tfu->fmt[p - savep] = '\0';
 763 /*      escape(tfu->fmt); */
 764
 765                 p1 = tfu->fmt;
 766
 767                 /* alphabetic escape sequences have to be done in place */
 768                 for (p2 = p1;; ++p1, ++p2) {
 769                         if (!*p1) {
 770                                 *p2 = *p1;
 771                                 break;
 772                         }
 773                         if (*p1 == '\\') {
 774                                 const char *cs = conv_str + 4;
 775                                 ++p1;
 776                                 *p2 = *p1;
 777                                 do {
 778                                         if (*p1 == cs[2]) {
 779                                                 *p2 = cs[0];
 780                                                 break;
 781                                         }
 782                                         cs += 4;
 783                                 } while (*cs);
 784                         }
 785                 }
 786
 787                 p++;
 788         }
 789 }
 790
 791 /*
 792  * Copyright (c) 1989 The Regents of the University of California.
 793  * All rights reserved.
 794  *
 795  * Redistribution and use in source and binary forms, with or without
 796  * modification, are permitted provided that the following conditions
 797  * are met:
 798  * 1. Redistributions of source code must retain the above copyright
 799  *    notice, this list of conditions and the following disclaimer.
 800  * 2. Redistributions in binary form must reproduce the above copyright
 801  *    notice, this list of conditions and the following disclaimer in the
 802  *    documentation and/or other materials provided with the distribution.
 803  * 3. Neither the name of the University nor the names of its contributors
 804  *    may be used to endorse or promote products derived from this software
 805  *    without specific prior written permission.
 806  *
 807  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 808  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 809  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 810  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 811  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 812  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 813  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 814  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 815  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 816  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 817  * SUCH DAMAGE.
 818  */