libbb/dump.c

   1 /* vi: set sw=4 ts=4: */
   2 /*
   3  * Support code for the hexdump and od applets,
   4  * based on code from util-linux v 2.11l
   5  *
   6  * Copyright (c) 1989
   7  * The Regents of the University of California.  All rights reserved.
   8  *
   9  * Licensed under GPLv2 or later, see file LICENSE in this source tree.
  10  *
  11  * Original copyright notice is retained at the end of this file.
  12  */
  13
  14 #include "libbb.h"
  15 #include "dump.h"
  16
  17 static const char index_str[] ALIGN1 = ".#-+ 0123456789";
  18
  19 static const char size_conv_str[] ALIGN1 =
  20 "\x1\x4\x4\x4\x4\x4\x4\x8\x8\x8\x8\010cdiouxXeEfgG";
  21
  22 static const char lcc[] ALIGN1 = "diouxX";
  23
  24
  25 typedef struct priv_dumper_t {
  26         dumper_t pub;
  27
  28         char **argv;
  29         FU *endfu;
  30         off_t savaddress;        /* saved address/offset in stream */
  31         off_t eaddress;          /* end address */
  32         off_t address;           /* address/offset in stream */
  33         int blocksize;
  34         smallint exitval;        /* final exit value */
  35
  36         /* former statics */
  37         smallint next__done;
  38         smallint get__ateof; // = 1;
  39         unsigned char *get__curp;
  40         unsigned char *get__savp;
  41 } priv_dumper_t;
  42
  43 dumper_t* FAST_FUNC alloc_dumper(void)
  44 {
  45         priv_dumper_t *dumper = xzalloc(sizeof(*dumper));
  46         dumper->pub.dump_length = -1;
  47         dumper->pub.dump_vflag = FIRST;
  48         dumper->get__ateof = 1;
  49         return &dumper->pub;
  50 }
  51
  52
  53 static NOINLINE int bb_dump_size(FS *fs)
  54 {
  55         FU *fu;
  56         int bcnt, cur_size;
  57         char *fmt;
  58         const char *p;
  59         int prec;
  60
  61         /* figure out the data block bb_dump_size needed for each format unit */
  62         for (cur_size = 0, fu = fs->nextfu; fu; fu = fu->nextfu) {
  63                 if (fu->bcnt) {
  64                         cur_size += fu->bcnt * fu->reps;
  65                         continue;
  66                 }
  67                 for (bcnt = prec = 0, fmt = fu->fmt; *fmt; ++fmt) {
  68                         if (*fmt != '%')
  69                                 continue;
  70                         /*
  71                          * skip any special chars -- save precision in
  72                          * case it's a %s format.
  73                          */
  74                         while (strchr(index_str + 1, *++fmt));
  75                         if (*fmt == '.' && isdigit(*++fmt)) {
  76                                 prec = atoi(fmt);
  77                                 while (isdigit(*++fmt))
  78                                         continue;
  79                         }
  80                         p = strchr(size_conv_str + 12, *fmt);
  81                         if (!p) {
  82                                 if (*fmt == 's') {
  83                                         bcnt += prec;
  84                                 } else if (*fmt == '_') {
  85                                         ++fmt;
  86                                         if ((*fmt == 'c') || (*fmt == 'p') || (*fmt == 'u')) {
  87                                                 bcnt += 1;
  88                                         }
  89                                 }
  90                         } else {
  91                                 bcnt += size_conv_str[p - (size_conv_str + 12)];
  92                         }
  93                 }
  94                 cur_size += bcnt * fu->reps;
  95         }
  96         return cur_size;
  97 }
  98
  99 static NOINLINE void rewrite(priv_dumper_t *dumper, FS *fs)
 100 {
 101         enum { NOTOKAY, USEBCNT, USEPREC } sokay;
 102         PR *pr;
 103         FU *fu;
 104         char *p1, *p2, *p3;
 105         char savech, *fmtp;
 106         const char *byte_count_str;
 107         int nconv, prec = 0;
 108
 109         for (fu = fs->nextfu; fu; fu = fu->nextfu) {
 110                 /*
 111                  * break each format unit into print units; each
 112                  * conversion character gets its own.
 113                  */
 114                 for (nconv = 0, fmtp = fu->fmt; *fmtp; ) {
 115                         /* NOSTRICT */
 116                         /* DBU:[dvae@cray.com] zalloc so that forward ptrs start out NULL*/
 117                         pr = xzalloc(sizeof(PR));
 118                         if (!fu->nextpr)
 119                                 fu->nextpr = pr;
 120
 121                         /* skip preceding text and up to the next % sign */
 122                         for (p1 = fmtp; *p1 && *p1 != '%'; ++p1)
 123                                 continue;
 124
 125                         /* only text in the string */
 126                         if (!*p1) {
 127                                 pr->fmt = fmtp;
 128                                 pr->flags = F_TEXT;
 129                                 break;
 130                         }
 131
 132                         /*
 133                          * get precision for %s -- if have a byte count, don't
 134                          * need it.
 135                          */
 136                         if (fu->bcnt) {
 137                                 sokay = USEBCNT;
 138                                 /* skip to conversion character */
 139                                 for (++p1; strchr(index_str, *p1); ++p1)
 140                                         continue;
 141                         } else {
 142                                 /* skip any special chars, field width */
 143                                 while (strchr(index_str + 1, *++p1))
 144                                         continue;
 145                                 if (*p1 == '.' && isdigit(*++p1)) {
 146                                         sokay = USEPREC;
 147                                         prec = atoi(p1);
 148                                         while (isdigit(*++p1))
 149                                                 continue;
 150                                 } else
 151                                         sokay = NOTOKAY;
 152                         }
 153
 154                         p2 = p1 + 1; /* set end pointer */
 155
 156                         /*
 157                          * figure out the byte count for each conversion;
 158                          * rewrite the format as necessary, set up blank-
 159                          * pbb_dump_adding for end of data.
 160                          */
 161                         if (*p1 == 'c') {
 162                                 pr->flags = F_CHAR;
 163  DO_BYTE_COUNT_1:
 164                                 byte_count_str = "\001";
 165  DO_BYTE_COUNT:
 166                                 if (fu->bcnt) {
 167                                         do {
 168                                                 if (fu->bcnt == *byte_count_str) {
 169                                                         break;
 170                                                 }
 171                                         } while (*++byte_count_str);
 172                                 }
 173                                 /* Unlike the original, output the remainder of the format string. */
 174                                 if (!*byte_count_str) {
 175                                         bb_error_msg_and_die("bad byte count for conversion character %s", p1);
 176                                 }
 177                                 pr->bcnt = *byte_count_str;
 178                         } else if (*p1 == 'l') {
 179                                 ++p2;
 180                                 ++p1;
 181  DO_INT_CONV:
 182                                 {
 183                                         const char *e;
 184                                         e = strchr(lcc, *p1);
 185                                         if (!e) {
 186                                                 goto DO_BAD_CONV_CHAR;
 187                                         }
 188                                         pr->flags = F_INT;
 189                                         if (e > lcc + 1) {
 190                                                 pr->flags = F_UINT;
 191                                         }
 192                                         byte_count_str = "\004\002\001";
 193                                         goto DO_BYTE_COUNT;
 194                                 }
 195                                 /* NOTREACHED */
 196                         } else if (strchr(lcc, *p1)) {
 197                                 goto DO_INT_CONV;
 198                         } else if (strchr("eEfgG", *p1)) {
 199                                 pr->flags = F_DBL;
 200                                 byte_count_str = "\010\004";
 201                                 goto DO_BYTE_COUNT;
 202                         } else if (*p1 == 's') {
 203                                 pr->flags = F_STR;
 204                                 if (sokay == USEBCNT) {
 205                                         pr->bcnt = fu->bcnt;
 206                                 } else if (sokay == USEPREC) {
 207                                         pr->bcnt = prec;
 208                                 } else {   /* NOTOKAY */
 209                                         bb_error_msg_and_die("%%s requires a precision or a byte count");
 210                                 }
 211                         } else if (*p1 == '_') {
 212                                 ++p2;
 213                                 switch (p1[1]) {
 214                                 case 'A':
 215                                         dumper->endfu = fu;
 216                                         fu->flags |= F_IGNORE;
 217                                         /* FALLTHROUGH */
 218                                 case 'a':
 219                                         pr->flags = F_ADDRESS;
 220                                         ++p2;
 221                                         if ((p1[2] != 'd') && (p1[2] != 'o') && (p1[2] != 'x')) {
 222                                                 goto DO_BAD_CONV_CHAR;
 223                                         }
 224                                         *p1 = p1[2];
 225                                         break;
 226                                 case 'c':
 227                                         pr->flags = F_C;
 228                                         /* *p1 = 'c';   set in conv_c */
 229                                         goto DO_BYTE_COUNT_1;
 230                                 case 'p':
 231                                         pr->flags = F_P;
 232                                         *p1 = 'c';
 233                                         goto DO_BYTE_COUNT_1;
 234                                 case 'u':
 235                                         pr->flags = F_U;
 236                                         /* *p1 = 'c';   set in conv_u */
 237                                         goto DO_BYTE_COUNT_1;
 238                                 default:
 239                                         goto DO_BAD_CONV_CHAR;
 240                                 }
 241                         } else {
 242  DO_BAD_CONV_CHAR:
 243                                 bb_error_msg_and_die("bad conversion character %%%s", p1);
 244                         }
 245
 246                         /*
 247                          * copy to PR format string, set conversion character
 248                          * pointer, update original.
 249                          */
 250                         savech = *p2;
 251                         p1[1] = '\0';
 252                         pr->fmt = xstrdup(fmtp);
 253                         *p2 = savech;
 254                         //Too early! xrealloc can move pr->fmt!
 255                         //pr->cchar = pr->fmt + (p1 - fmtp);
 256
 257                         /* DBU:[dave@cray.com] w/o this, trailing fmt text, space is lost.
 258                          * Skip subsequent text and up to the next % sign and tack the
 259                          * additional text onto fmt: eg. if fmt is "%x is a HEX number",
 260                          * we lose the " is a HEX number" part of fmt.
 261                          */
 262                         for (p3 = p2; *p3 && *p3 != '%'; p3++)
 263                                 continue;
 264                         if (p3 > p2) {
 265                                 savech = *p3;
 266                                 *p3 = '\0';
 267                                 pr->fmt = xrealloc(pr->fmt, strlen(pr->fmt) + (p3-p2) + 1);
 268                                 strcat(pr->fmt, p2);
 269                                 *p3 = savech;
 270                                 p2 = p3;
 271                         }
 272
 273                         pr->cchar = pr->fmt + (p1 - fmtp);
 274                         fmtp = p2;
 275
 276                         /* only one conversion character if byte count */
 277                         if (!(pr->flags & F_ADDRESS) && fu->bcnt && nconv++) {
 278                                 bb_error_msg_and_die("byte count with multiple conversion characters");
 279                         }
 280                 }
 281                 /*
 282                  * if format unit byte count not specified, figure it out
 283                  * so can adjust rep count later.
 284                  */
 285                 if (!fu->bcnt)
 286                         for (pr = fu->nextpr; pr; pr = pr->nextpr)
 287                                 fu->bcnt += pr->bcnt;
 288         }
 289         /*
 290          * if the format string interprets any data at all, and it's
 291          * not the same as the blocksize, and its last format unit
 292          * interprets any data at all, and has no iteration count,
 293          * repeat it as necessary.
 294          *
 295          * if, rep count is greater than 1, no trailing whitespace
 296          * gets output from the last iteration of the format unit.
 297          */
 298         for (fu = fs->nextfu; fu; fu = fu->nextfu) {
 299                 if (!fu->nextfu && fs->bcnt < dumper->blocksize
 300                  && !(fu->flags & F_SETREP) && fu->bcnt
 301                 ) {
 302                         fu->reps += (dumper->blocksize - fs->bcnt) / fu->bcnt;
 303                 }
 304                 if (fu->reps > 1) {
 305                         for (pr = fu->nextpr;; pr = pr->nextpr)
 306                                 if (!pr->nextpr)
 307                                         break;
 308                         for (p1 = pr->fmt, p2 = NULL; *p1; ++p1)
 309                                 p2 = isspace(*p1) ? p1 : NULL;
 310                         if (p2)
 311                                 pr->nospace = p2;
 312                 }
 313                 if (!fu->nextfu)
 314                         break;
 315         }
 316 }
 317
 318 static void do_skip(priv_dumper_t *dumper, const char *fname, int statok)
 319 {
 320         struct stat sbuf;
 321
 322         if (statok) {
 323                 xfstat(STDIN_FILENO, &sbuf, fname);
 324                 if (!(S_ISCHR(sbuf.st_mode) || S_ISBLK(sbuf.st_mode) || S_ISFIFO(sbuf.st_mode))
 325                  && dumper->pub.dump_skip >= sbuf.st_size
 326                 ) {
 327                         /* If bb_dump_size valid and pub.dump_skip >= size */
 328                         dumper->pub.dump_skip -= sbuf.st_size;
 329                         dumper->address += sbuf.st_size;
 330                         return;
 331                 }
 332         }
 333         if (fseek(stdin, dumper->pub.dump_skip, SEEK_SET)) {
 334                 bb_simple_perror_msg_and_die(fname);
 335         }
 336         dumper->address += dumper->pub.dump_skip;
 337         dumper->savaddress = dumper->address;
 338         dumper->pub.dump_skip = 0;
 339 }
 340
 341 static NOINLINE int next(priv_dumper_t *dumper)
 342 {
 343         int statok;
 344
 345         for (;;) {
 346                 if (*dumper->argv) {
 347                         dumper->next__done = statok = 1;
 348                         if (!(freopen(*dumper->argv, "r", stdin))) {
 349                                 bb_simple_perror_msg(*dumper->argv);
 350                                 dumper->exitval = 1;
 351                                 ++dumper->argv;
 352                                 continue;
 353                         }
 354                 } else {
 355                         if (dumper->next__done)
 356                                 return 0; /* no next file */
 357                         dumper->next__done = 1;
 358                         statok = 0;
 359                 }
 360                 if (dumper->pub.dump_skip)
 361                         do_skip(dumper, statok ? *dumper->argv : "stdin", statok);
 362                 if (*dumper->argv)
 363                         ++dumper->argv;
 364                 if (!dumper->pub.dump_skip)
 365                         return 1;
 366         }
 367         /* NOTREACHED */
 368 }
 369
 370 static unsigned char *get(priv_dumper_t *dumper)
 371 {
 372         int n;
 373         int need, nread;
 374         int blocksize = dumper->blocksize;
 375
 376         if (!dumper->get__curp) {
 377                 dumper->address = (off_t)0; /*DBU:[dave@cray.com] initialize,initialize..*/
 378                 dumper->get__curp = xmalloc(blocksize);
 379                 dumper->get__savp = xzalloc(blocksize); /* need to be initialized */
 380         } else {
 381                 unsigned char *tmp = dumper->get__curp;
 382                 dumper->get__curp = dumper->get__savp;
 383                 dumper->get__savp = tmp;
 384                 dumper->savaddress += blocksize;
 385                 dumper->address = dumper->savaddress;
 386         }
 387         need = blocksize;
 388         nread = 0;
 389         while (1) {
 390                 /*
 391                  * if read the right number of bytes, or at EOF for one file,
 392                  * and no other files are available, zero-pad the rest of the
 393                  * block and set the end flag.
 394                  */
 395                 if (!dumper->pub.dump_length || (dumper->get__ateof && !next(dumper))) {
 396                         if (need == blocksize) {
 397                                 return NULL;
 398                         }
 399                         if (dumper->pub.dump_vflag != ALL && !memcmp(dumper->get__curp, dumper->get__savp, nread)) {
 400                                 if (dumper->pub.dump_vflag != DUP) {
 401                                         puts("*");
 402                                 }
 403                                 return NULL;
 404                         }
 405                         memset(dumper->get__curp + nread, 0, need);
 406                         dumper->eaddress = dumper->address + nread;
 407                         return dumper->get__curp;
 408                 }
 409                 n = fread(dumper->get__curp + nread, sizeof(unsigned char),
 410                                 dumper->pub.dump_length == -1 ? need : MIN(dumper->pub.dump_length, need), stdin);
 411                 if (!n) {
 412                         if (ferror(stdin)) {
 413                                 bb_simple_perror_msg(dumper->argv[-1]);
 414                         }
 415                         dumper->get__ateof = 1;
 416                         continue;
 417                 }
 418                 dumper->get__ateof = 0;
 419                 if (dumper->pub.dump_length != -1) {
 420                         dumper->pub.dump_length -= n;
 421                 }
 422                 need -= n;
 423                 if (!need) {
 424                         if (dumper->pub.dump_vflag == ALL || dumper->pub.dump_vflag == FIRST
 425                          || memcmp(dumper->get__curp, dumper->get__savp, blocksize)
 426                         ) {
 427                                 if (dumper->pub.dump_vflag == DUP || dumper->pub.dump_vflag == FIRST) {
 428                                         dumper->pub.dump_vflag = WAIT;
 429                                 }
 430                                 return dumper->get__curp;
 431                         }
 432                         if (dumper->pub.dump_vflag == WAIT) {
 433                                 puts("*");
 434                         }
 435                         dumper->pub.dump_vflag = DUP;
 436                         dumper->savaddress += blocksize;
 437                         dumper->address = dumper->savaddress;
 438                         need = blocksize;
 439                         nread = 0;
 440                 } else {
 441                         nread += n;
 442                 }
 443         }
 444 }
 445
 446 static void bpad(PR *pr)
 447 {
 448         char *p1, *p2;
 449
 450         /*
 451          * remove all conversion flags; '-' is the only one valid
 452          * with %s, and it's not useful here.
 453          */
 454         pr->flags = F_BPAD;
 455         *pr->cchar = 's';
 456         for (p1 = pr->fmt; *p1 != '%'; ++p1)
 457                 continue;
 458         for (p2 = ++p1; *p1 && strchr(" -0+#", *p1); ++p1)
 459                 if (pr->nospace)
 460                         pr->nospace--;
 461         while ((*p2++ = *p1++) != 0)
 462                 continue;
 463 }
 464
 465 static const char conv_str[] ALIGN1 =
 466         "\0\\0\0"
 467         "\007\\a\0"  /* \a */
 468         "\b\\b\0"
 469         "\f\\b\0"
 470         "\n\\n\0"
 471         "\r\\r\0"
 472         "\t\\t\0"
 473         "\v\\v\0"
 474         ;
 475
 476
 477 static void conv_c(PR *pr, unsigned char *p)
 478 {
 479         const char *str = conv_str;
 480         char buf[10];
 481
 482         do {
 483                 if (*p == *str) {
 484                         ++str;
 485                         goto strpr;
 486                 }
 487                 str += 4;
 488         } while (*str);
 489
 490         if (isprint_asciionly(*p)) {
 491                 *pr->cchar = 'c';
 492                 printf(pr->fmt, *p);
 493         } else {
 494                 sprintf(buf, "%03o", (int) *p);
 495                 str = buf;
 496  strpr:
 497                 *pr->cchar = 's';
 498                 printf(pr->fmt, str);
 499         }
 500 }
 501
 502 static void conv_u(PR *pr, unsigned char *p)
 503 {
 504         static const char list[] ALIGN1 =
 505                 "nul\0soh\0stx\0etx\0eot\0enq\0ack\0bel\0"
 506                 "bs\0_ht\0_lf\0_vt\0_ff\0_cr\0_so\0_si\0_"
 507                 "dle\0dcl\0dc2\0dc3\0dc4\0nak\0syn\0etb\0"
 508                 "can\0em\0_sub\0esc\0fs\0_gs\0_rs\0_us";
 509
 510         /* od used nl, not lf */
 511         if (*p <= 0x1f) {
 512                 *pr->cchar = 's';
 513                 printf(pr->fmt, list + (4 * (int)*p));
 514         } else if (*p == 0x7f) {
 515                 *pr->cchar = 's';
 516                 printf(pr->fmt, "del");
 517         } else if (*p < 0x7f) { /* isprint() */
 518                 *pr->cchar = 'c';
 519                 printf(pr->fmt, *p);
 520         } else {
 521                 *pr->cchar = 'x';
 522                 printf(pr->fmt, (int) *p);
 523         }
 524 }
 525
 526 static void display(priv_dumper_t* dumper)
 527 {
 528         FS *fs;
 529         FU *fu;
 530         PR *pr;
 531         int cnt;
 532         unsigned char *bp, *savebp;
 533         off_t saveaddress;
 534         unsigned char savech = '\0';
 535
 536         while ((bp = get(dumper)) != NULL) {
 537                 fs = dumper->pub.fshead;
 538                 savebp = bp;
 539                 saveaddress = dumper->address;
 540                 for (; fs; fs = fs->nextfs, bp = savebp, dumper->address = saveaddress) {
 541                         for (fu = fs->nextfu; fu; fu = fu->nextfu) {
 542                                 if (fu->flags & F_IGNORE) {
 543                                         break;
 544                                 }
 545                                 for (cnt = fu->reps; cnt; --cnt) {
 546                                         for (pr = fu->nextpr; pr; dumper->address += pr->bcnt,
 547                                                                 bp += pr->bcnt, pr = pr->nextpr) {
 548                                                 if (dumper->eaddress && dumper->address >= dumper->eaddress
 549                                                  && !(pr->flags & (F_TEXT | F_BPAD))
 550                                                 ) {
 551                                                         bpad(pr);
 552                                                 }
 553                                                 if (cnt == 1 && pr->nospace) {
 554                                                         savech = *pr->nospace;
 555                                                         *pr->nospace = '\0';
 556                                                 }
 557 /*                      PRINT; */
 558                                                 switch (pr->flags) {
 559                                                 case F_ADDRESS:
 560                                                         printf(pr->fmt, (unsigned) dumper->address);
 561                                                         break;
 562                                                 case F_BPAD:
 563                                                         printf(pr->fmt, "");
 564                                                         break;
 565                                                 case F_C:
 566                                                         conv_c(pr, bp);
 567                                                         break;
 568                                                 case F_CHAR:
 569                                                         printf(pr->fmt, *bp);
 570                                                         break;
 571                                                 case F_DBL: {
 572                                                         double dval;
 573                                                         float fval;
 574
 575                                                         switch (pr->bcnt) {
 576                                                         case 4:
 577                                                                 memcpy(&fval, bp, sizeof(fval));
 578                                                                 printf(pr->fmt, fval);
 579                                                                 break;
 580                                                         case 8:
 581                                                                 memcpy(&dval, bp, sizeof(dval));
 582                                                                 printf(pr->fmt, dval);
 583                                                                 break;
 584                                                         }
 585                                                         break;
 586                                                 }
 587                                                 case F_INT: {
 588                                                         int ival;
 589                                                         short sval;
 590
 591                                                         switch (pr->bcnt) {
 592                                                         case 1:
 593                                                                 printf(pr->fmt, (int) *bp);
 594                                                                 break;
 595                                                         case 2:
 596                                                                 memcpy(&sval, bp, sizeof(sval));
 597                                                                 printf(pr->fmt, (int) sval);
 598                                                                 break;
 599                                                         case 4:
 600                                                                 memcpy(&ival, bp, sizeof(ival));
 601                                                                 printf(pr->fmt, ival);
 602                                                                 break;
 603                                                         }
 604                                                         break;
 605                                                 }
 606                                                 case F_P:
 607                                                         printf(pr->fmt, isprint_asciionly(*bp) ? *bp : '.');
 608                                                         break;
 609                                                 case F_STR:
 610                                                         printf(pr->fmt, (char *) bp);
 611                                                         break;
 612                                                 case F_TEXT:
 613                                                         printf(pr->fmt);
 614                                                         break;
 615                                                 case F_U:
 616                                                         conv_u(pr, bp);
 617                                                         break;
 618                                                 case F_UINT: {
 619                                                         unsigned ival;
 620                                                         unsigned short sval;
 621
 622                                                         switch (pr->bcnt) {
 623                                                         case 1:
 624                                                                 printf(pr->fmt, (unsigned) *bp);
 625                                                                 break;
 626                                                         case 2:
 627                                                                 memcpy(&sval, bp, sizeof(sval));
 628                                                                 printf(pr->fmt, (unsigned) sval);
 629                                                                 break;
 630                                                         case 4:
 631                                                                 memcpy(&ival, bp, sizeof(ival));
 632                                                                 printf(pr->fmt, ival);
 633                                                                 break;
 634                                                         }
 635                                                         break;
 636                                                 }
 637                                                 }
 638                                                 if (cnt == 1 && pr->nospace) {
 639                                                         *pr->nospace = savech;
 640                                                 }
 641                                         }
 642                                 }
 643                         }
 644                 }
 645         }
 646         if (dumper->endfu) {
 647                 /*
 648                  * if eaddress not set, error or file size was multiple
 649                  * of blocksize, and no partial block ever found.
 650                  */
 651                 if (!dumper->eaddress) {
 652                         if (!dumper->address) {
 653                                 return;
 654                         }
 655                         dumper->eaddress = dumper->address;
 656                 }
 657                 for (pr = dumper->endfu->nextpr; pr; pr = pr->nextpr) {
 658                         switch (pr->flags) {
 659                         case F_ADDRESS:
 660                                 printf(pr->fmt, (unsigned) dumper->eaddress);
 661                                 break;
 662                         case F_TEXT:
 663                                 printf(pr->fmt);
 664                                 break;
 665                         }
 666                 }
 667         }
 668 }
 669
 670 #define dumper ((priv_dumper_t*)pub_dumper)
 671 int FAST_FUNC bb_dump_dump(dumper_t *pub_dumper, char **argv)
 672 {
 673         FS *tfs;
 674         int blocksize;
 675
 676         /* figure out the data block bb_dump_size */
 677         blocksize = 0;
 678         tfs = dumper->pub.fshead;
 679         while (tfs) {
 680                 tfs->bcnt = bb_dump_size(tfs);
 681                 if (blocksize < tfs->bcnt) {
 682                         blocksize = tfs->bcnt;
 683                 }
 684                 tfs = tfs->nextfs;
 685         }
 686         dumper->blocksize = blocksize;
 687
 688         /* rewrite the rules, do syntax checking */
 689         for (tfs = dumper->pub.fshead; tfs; tfs = tfs->nextfs) {
 690                 rewrite(dumper, tfs);
 691         }
 692
 693         dumper->argv = argv;
 694         display(dumper);
 695
 696         return dumper->exitval;
 697 }
 698
 699 void FAST_FUNC bb_dump_add(dumper_t* pub_dumper, const char *fmt)
 700 {
 701         const char *p;
 702         char *p1;
 703         char *p2;
 704         FS *tfs;
 705         FU *tfu, **nextfupp;
 706         const char *savep;
 707
 708         /* start new linked list of format units */
 709         tfs = xzalloc(sizeof(FS)); /*DBU:[dave@cray.com] start out NULL */
 710         if (!dumper->pub.fshead) {
 711                 dumper->pub.fshead = tfs;
 712         } else {
 713                 FS *fslast = dumper->pub.fshead;
 714                 while (fslast->nextfs)
 715                         fslast = fslast->nextfs;
 716                 fslast->nextfs = tfs;
 717         }
 718         nextfupp = &tfs->nextfu;
 719
 720         /* take the format string and break it up into format units */
 721         p = fmt;
 722         for (;;) {
 723                 p = skip_whitespace(p);
 724                 if (!*p) {
 725                         break;
 726                 }
 727
 728                 /* allocate a new format unit and link it in */
 729                 /* NOSTRICT */
 730                 /* DBU:[dave@cray.com] zalloc so that forward pointers start out NULL */
 731                 tfu = xzalloc(sizeof(FU));
 732                 *nextfupp = tfu;
 733                 nextfupp = &tfu->nextfu;
 734                 tfu->reps = 1;
 735
 736                 /* if leading digit, repetition count */
 737                 if (isdigit(*p)) {
 738                         for (savep = p; isdigit(*p); ++p)
 739                                 continue;
 740                         if (!isspace(*p) && *p != '/') {
 741                                 bb_error_msg_and_die("bad format {%s}", fmt);
 742                         }
 743                         /* may overwrite either white space or slash */
 744                         tfu->reps = atoi(savep);
 745                         tfu->flags = F_SETREP;
 746                         /* skip trailing white space */
 747                         p = skip_whitespace(++p);
 748                 }
 749
 750                 /* skip slash and trailing white space */
 751                 if (*p == '/') {
 752                         p = skip_whitespace(++p);
 753                 }
 754
 755                 /* byte count */
 756                 if (isdigit(*p)) {
 757 // TODO: use bb_strtou
 758                         savep = p;
 759                         while (isdigit(*++p))
 760                                 continue;
 761                         if (!isspace(*p)) {
 762                                 bb_error_msg_and_die("bad format {%s}", fmt);
 763                         }
 764                         tfu->bcnt = atoi(savep);
 765                         /* skip trailing white space */
 766                         p = skip_whitespace(++p);
 767                 }
 768
 769                 /* format */
 770                 if (*p != '"') {
 771                         bb_error_msg_and_die("bad format {%s}", fmt);
 772                 }
 773                 for (savep = ++p; *p != '"';) {
 774                         if (*p++ == 0) {
 775                                 bb_error_msg_and_die("bad format {%s}", fmt);
 776                         }
 777                 }
 778                 tfu->fmt = xstrndup(savep, p - savep);
 779 /*      escape(tfu->fmt); */
 780
 781                 p1 = tfu->fmt;
 782
 783                 /* alphabetic escape sequences have to be done in place */
 784                 for (p2 = p1;; ++p1, ++p2) {
 785                         if (!*p1) {
 786                                 *p2 = *p1;
 787                                 break;
 788                         }
 789                         if (*p1 == '\\') {
 790                                 const char *cs = conv_str + 4;
 791                                 ++p1;
 792                                 *p2 = *p1;
 793                                 do {
 794                                         if (*p1 == cs[2]) {
 795                                                 *p2 = cs[0];
 796                                                 break;
 797                                         }
 798                                         cs += 4;
 799                                 } while (*cs);
 800                         }
 801                 }
 802
 803                 p++;
 804         }
 805 }
 806
 807 /*
 808  * Copyright (c) 1989 The Regents of the University of California.
 809  * All rights reserved.
 810  *
 811  * Redistribution and use in source and binary forms, with or without
 812  * modification, are permitted provided that the following conditions
 813  * are met:
 814  * 1. Redistributions of source code must retain the above copyright
 815  *    notice, this list of conditions and the following disclaimer.
 816  * 2. Redistributions in binary form must reproduce the above copyright
 817  *    notice, this list of conditions and the following disclaimer in the
 818  *    documentation and/or other materials provided with the distribution.
 819  * 3. Neither the name of the University nor the names of its contributors
 820  *    may be used to endorse or promote products derived from this software
 821  *    without specific prior written permission.
 822  *
 823  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 824  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 825  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 826  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 827  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 828  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 829  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 830  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 831  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 832  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 833  * SUCH DAMAGE.
 834  */