contrib/ncurses/progs/toe.c

   1 /****************************************************************************
   2  * Copyright (c) 1998-2012,2013 Free Software Foundation, Inc.              *
   3  *                                                                          *
   4  * Permission is hereby granted, free of charge, to any person obtaining a  *
   5  * copy of this software and associated documentation files (the            *
   6  * "Software"), to deal in the Software without restriction, including      *
   7  * without limitation the rights to use, copy, modify, merge, publish,      *
   8  * distribute, distribute with modifications, sublicense, and/or sell       *
   9  * copies of the Software, and to permit persons to whom the Software is    *
  10  * furnished to do so, subject to the following conditions:                 *
  11  *                                                                          *
  12  * The above copyright notice and this permission notice shall be included  *
  13  * in all copies or substantial portions of the Software.                   *
  14  *                                                                          *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *
  16  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
  17  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   *
  18  * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,   *
  19  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR    *
  20  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR    *
  21  * THE USE OR OTHER DEALINGS IN THE SOFTWARE.                               *
  22  *                                                                          *
  23  * Except as contained in this notice, the name(s) of the above copyright   *
  24  * holders shall not be used in advertising or otherwise to promote the     *
  25  * sale, use or other dealings in this Software without prior written       *
  26  * authorization.                                                           *
  27  ****************************************************************************/
  28
  29 /****************************************************************************
  30  *  Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995               *
  31  *     and: Eric S. Raymond <esr@snark.thyrsus.com>                         *
  32  *     and: Thomas E. Dickey                        1996-on                 *
  33  ****************************************************************************/
  34
  35 /*
  36  *      toe.c --- table of entries report generator
  37  */
  38
  39 #include <progs.priv.h>
  40
  41 #include <sys/stat.h>
  42
  43 #if USE_HASHED_DB
  44 #include <hashed_db.h>
  45 #endif
  46
  47 MODULE_ID("$Id: toe.c,v 1.74 2013/12/15 01:08:28 tom Exp $")
  48
  49 #define isDotname(name) (!strcmp(name, ".") || !strcmp(name, ".."))
  50
  51 typedef struct {
  52     int db_index;
  53     unsigned long checksum;
  54     char *term_name;
  55     char *description;
  56 } TERMDATA;
  57
  58 const char *_nc_progname;
  59
  60 static TERMDATA *ptr_termdata;  /* array of terminal data */
  61 static size_t use_termdata;     /* actual usage in ptr_termdata[] */
  62 static size_t len_termdata;     /* allocated size of ptr_termdata[] */
  63
  64 #if NO_LEAKS
  65 #undef ExitProgram
  66 static void ExitProgram(int code) GCC_NORETURN;
  67 static void
  68 ExitProgram(int code)
  69 {
  70     _nc_free_entries(_nc_head);
  71     _nc_free_tic(code);
  72 }
  73 #endif
  74
  75 static void failed(const char *) GCC_NORETURN;
  76
  77 static void
  78 failed(const char *msg)
  79 {
  80     perror(msg);
  81     ExitProgram(EXIT_FAILURE);
  82 }
  83
  84 static char *
  85 strmalloc(const char *value)
  86 {
  87     char *result = strdup(value);
  88     if (result == 0) {
  89         failed("strmalloc");
  90     }
  91     return result;
  92 }
  93
  94 static TERMDATA *
  95 new_termdata(void)
  96 {
  97     size_t want = use_termdata + 1;
  98
  99     if (want >= len_termdata) {
 100         len_termdata = (2 * want) + 10;
 101         ptr_termdata = typeRealloc(TERMDATA, len_termdata, ptr_termdata);
 102         if (ptr_termdata == 0)
 103             failed("ptr_termdata");
 104     }
 105
 106     return ptr_termdata + use_termdata++;
 107 }
 108
 109 static int
 110 compare_termdata(const void *a, const void *b)
 111 {
 112     const TERMDATA *p = (const TERMDATA *) a;
 113     const TERMDATA *q = (const TERMDATA *) b;
 114     int result = strcmp(p->term_name, q->term_name);
 115
 116     if (result == 0) {
 117         result = (p->db_index - q->db_index);
 118     }
 119     return result;
 120 }
 121
 122 /*
 123  * Sort the array of TERMDATA and print it.  If more than one database is being
 124  * reported, add a column to show which database has a given entry.
 125  */
 126 static void
 127 show_termdata(int eargc, char **eargv)
 128 {
 129     int j, k;
 130     size_t n;
 131
 132     if (use_termdata) {
 133         if (eargc > 1) {
 134             for (j = 0; j < eargc; ++j) {
 135                 for (k = 0; k <= j; ++k) {
 136                     printf("--");
 137                 }
 138                 printf("> ");
 139                 printf("%s\n", eargv[j]);
 140             }
 141         }
 142         if (use_termdata > 1)
 143             qsort(ptr_termdata, use_termdata, sizeof(TERMDATA), compare_termdata);
 144         for (n = 0; n < use_termdata; ++n) {
 145
 146             /*
 147              * If there is more than one database, show how they differ.
 148              */
 149             if (eargc > 1) {
 150                 unsigned long check = 0;
 151                 k = 0;
 152                 for (;;) {
 153                     for (; k < ptr_termdata[n].db_index; ++k) {
 154                         printf("--");
 155                     }
 156
 157                     /*
 158                      * If this is the first entry, or its checksum differs
 159                      * from the first entry's checksum, print "*". Otherwise
 160                      * it looks enough like a duplicate to print "+".
 161                      */
 162                     printf("%c-", ((check == 0
 163                                     || (check != ptr_termdata[n].checksum))
 164                                    ? '*'
 165                                    : '+'));
 166                     check = ptr_termdata[n].checksum;
 167
 168                     ++k;
 169                     if ((n + 1) >= use_termdata
 170                         || strcmp(ptr_termdata[n].term_name,
 171                                   ptr_termdata[n + 1].term_name)) {
 172                         break;
 173                     }
 174                     ++n;
 175                 }
 176                 for (; k < eargc; ++k) {
 177                     printf("--");
 178                 }
 179                 printf(":\t");
 180             }
 181
 182             (void) printf("%-10s\t%s\n",
 183                           ptr_termdata[n].term_name,
 184                           ptr_termdata[n].description);
 185         }
 186     }
 187 }
 188
 189 static void
 190 free_termdata(void)
 191 {
 192     if (ptr_termdata != 0) {
 193         while (use_termdata != 0) {
 194             --use_termdata;
 195             free(ptr_termdata[use_termdata].term_name);
 196             free(ptr_termdata[use_termdata].description);
 197         }
 198         free(ptr_termdata);
 199         ptr_termdata = 0;
 200     }
 201     use_termdata = 0;
 202     len_termdata = 0;
 203 }
 204
 205 static char **
 206 allocArgv(size_t count)
 207 {
 208     char **result = typeCalloc(char *, count + 1);
 209     if (result == 0)
 210         failed("realloc eargv");
 211
 212     assert(result != 0);
 213     return result;
 214 }
 215
 216 static void
 217 freeArgv(char **argv)
 218 {
 219     if (argv) {
 220         int count = 0;
 221         while (argv[count]) {
 222             free(argv[count++]);
 223         }
 224         free(argv);
 225     }
 226 }
 227
 228 #if USE_HASHED_DB
 229 static bool
 230 make_db_name(char *dst, const char *src, unsigned limit)
 231 {
 232     static const char suffix[] = DBM_SUFFIX;
 233
 234     bool result = FALSE;
 235     size_t lens = sizeof(suffix) - 1;
 236     size_t size = strlen(src);
 237     size_t need = lens + size;
 238
 239     if (need <= limit) {
 240         if (size >= lens
 241             && !strcmp(src + size - lens, suffix)) {
 242             _nc_STRCPY(dst, src, PATH_MAX);
 243         } else {
 244             _nc_SPRINTF(dst, _nc_SLIMIT(PATH_MAX) "%s%s", src, suffix);
 245         }
 246         result = TRUE;
 247     }
 248     return result;
 249 }
 250 #endif
 251
 252 typedef void (DescHook) (int /* db_index */ ,
 253                          int /* db_limit */ ,
 254                          const char * /* term_name */ ,
 255                          TERMTYPE * /* term */ );
 256
 257 static const char *
 258 term_description(TERMTYPE *tp)
 259 {
 260     const char *desc;
 261
 262     if (tp->term_names == 0
 263         || (desc = strrchr(tp->term_names, '|')) == 0
 264         || (*++desc == '\0')) {
 265         desc = "(No description)";
 266     }
 267
 268     return desc;
 269 }
 270
 271 /* display a description for the type */
 272 static void
 273 deschook(int db_index, int db_limit, const char *term_name, TERMTYPE *tp)
 274 {
 275     (void) db_index;
 276     (void) db_limit;
 277     (void) printf("%-10s\t%s\n", term_name, term_description(tp));
 278 }
 279
 280 static unsigned long
 281 string_sum(const char *value)
 282 {
 283     unsigned long result = 0;
 284
 285     if ((intptr_t) value == (intptr_t) (-1)) {
 286         result = ~result;
 287     } else if (value) {
 288         while (*value) {
 289             result += UChar(*value);
 290             ++value;
 291         }
 292     }
 293     return result;
 294 }
 295
 296 static unsigned long
 297 checksum_of(TERMTYPE *tp)
 298 {
 299     unsigned long result = string_sum(tp->term_names);
 300     unsigned i;
 301
 302     for (i = 0; i < NUM_BOOLEANS(tp); i++) {
 303         result += (unsigned long) (tp->Booleans[i]);
 304     }
 305     for (i = 0; i < NUM_NUMBERS(tp); i++) {
 306         result += (unsigned long) (tp->Numbers[i]);
 307     }
 308     for (i = 0; i < NUM_STRINGS(tp); i++) {
 309         result += string_sum(tp->Strings[i]);
 310     }
 311     return result;
 312 }
 313
 314 /* collect data, to sort before display */
 315 static void
 316 sorthook(int db_index, int db_limit, const char *term_name, TERMTYPE *tp)
 317 {
 318     TERMDATA *data = new_termdata();
 319
 320     data->db_index = db_index;
 321     data->checksum = ((db_limit > 1) ? checksum_of(tp) : 0);
 322     data->term_name = strmalloc(term_name);
 323     data->description = strmalloc(term_description(tp));
 324 }
 325
 326 #if NCURSES_USE_TERMCAP
 327 static void
 328 show_termcap(int db_index, int db_limit, char *buffer, DescHook hook)
 329 {
 330     TERMTYPE data;
 331     char *next = strchr(buffer, ':');
 332     char *last;
 333     char *list = buffer;
 334
 335     if (next)
 336         *next = '\0';
 337
 338     last = strrchr(buffer, '|');
 339     if (last)
 340         ++last;
 341
 342     memset(&data, 0, sizeof(data));
 343     data.term_names = strmalloc(buffer);
 344     while ((next = strtok(list, "|")) != 0) {
 345         if (next != last)
 346             hook(db_index, db_limit, next, &data);
 347         list = 0;
 348     }
 349     free(data.term_names);
 350 }
 351 #endif
 352
 353 #if NCURSES_USE_DATABASE
 354 static char *
 355 copy_entryname(DIRENT * src)
 356 {
 357     size_t len = NAMLEN(src);
 358     char *result = malloc(len + 1);
 359     if (result == 0)
 360         failed("copy entryname");
 361     memcpy(result, src->d_name, len);
 362     result[len] = '\0';
 363
 364     return result;
 365 }
 366 #endif
 367
 368 static int
 369 typelist(int eargc, char *eargv[],
 370          int verbosity,
 371          DescHook hook)
 372 /* apply a function to each entry in given terminfo directories */
 373 {
 374     int i;
 375
 376     for (i = 0; i < eargc; i++) {
 377 #if NCURSES_USE_DATABASE
 378         if (_nc_is_dir_path(eargv[i])) {
 379             char *cwd_buf = 0;
 380             DIR *termdir;
 381             DIRENT *subdir;
 382
 383             if ((termdir = opendir(eargv[i])) == 0) {
 384                 (void) fflush(stdout);
 385                 (void) fprintf(stderr,
 386                                "%s: can't open terminfo directory %s\n",
 387                                _nc_progname, eargv[i]);
 388                 continue;
 389             }
 390
 391             if (verbosity)
 392                 (void) printf("#\n#%s:\n#\n", eargv[i]);
 393
 394             while ((subdir = readdir(termdir)) != 0) {
 395                 size_t cwd_len;
 396                 char *name_1;
 397                 DIR *entrydir;
 398                 DIRENT *entry;
 399
 400                 name_1 = copy_entryname(subdir);
 401                 if (isDotname(name_1)) {
 402                     free(name_1);
 403                     continue;
 404                 }
 405
 406                 cwd_len = NAMLEN(subdir) + strlen(eargv[i]) + 3;
 407                 cwd_buf = typeRealloc(char, cwd_len, cwd_buf);
 408                 if (cwd_buf == 0)
 409                     failed("realloc cwd_buf");
 410
 411                 assert(cwd_buf != 0);
 412
 413                 _nc_SPRINTF(cwd_buf, _nc_SLIMIT(cwd_len)
 414                             "%s/%s/", eargv[i], name_1);
 415                 free(name_1);
 416
 417                 if (chdir(cwd_buf) != 0)
 418                     continue;
 419
 420                 entrydir = opendir(".");
 421                 if (entrydir == 0) {
 422                     perror(cwd_buf);
 423                     continue;
 424                 }
 425                 while ((entry = readdir(entrydir)) != 0) {
 426                     char *name_2;
 427                     TERMTYPE lterm;
 428                     char *cn;
 429                     int status;
 430
 431                     name_2 = copy_entryname(entry);
 432                     if (isDotname(name_2) || !_nc_is_file_path(name_2)) {
 433                         free(name_2);
 434                         continue;
 435                     }
 436
 437                     status = _nc_read_file_entry(name_2, &lterm);
 438                     if (status <= 0) {
 439                         (void) fflush(stdout);
 440                         (void) fprintf(stderr,
 441                                        "%s: couldn't open terminfo file %s.\n",
 442                                        _nc_progname, name_2);
 443                         free(cwd_buf);
 444                         free(name_2);
 445                         closedir(entrydir);
 446                         closedir(termdir);
 447                         return (EXIT_FAILURE);
 448                     }
 449
 450                     /* only visit things once, by primary name */
 451                     cn = _nc_first_name(lterm.term_names);
 452                     if (!strcmp(cn, name_2)) {
 453                         /* apply the selected hook function */
 454                         hook(i, eargc, cn, &lterm);
 455                     }
 456                     _nc_free_termtype(&lterm);
 457                     free(name_2);
 458                 }
 459                 closedir(entrydir);
 460             }
 461             closedir(termdir);
 462             if (cwd_buf != 0)
 463                 free(cwd_buf);
 464             continue;
 465         }
 466 #if USE_HASHED_DB
 467         else {
 468             DB *capdbp;
 469             char filename[PATH_MAX];
 470
 471             if (verbosity)
 472                 (void) printf("#\n#%s:\n#\n", eargv[i]);
 473
 474             if (make_db_name(filename, eargv[i], sizeof(filename))) {
 475                 if ((capdbp = _nc_db_open(filename, FALSE)) != 0) {
 476                     DBT key, data;
 477                     int code;
 478
 479                     code = _nc_db_first(capdbp, &key, &data);
 480                     while (code == 0) {
 481                         TERMTYPE lterm;
 482                         int used;
 483                         char *have;
 484                         char *cn;
 485
 486                         if (_nc_db_have_data(&key, &data, &have, &used)) {
 487                             if (_nc_read_termtype(&lterm, have, used) > 0) {
 488                                 /* only visit things once, by primary name */
 489                                 cn = _nc_first_name(lterm.term_names);
 490                                 /* apply the selected hook function */
 491                                 hook(i, eargc, cn, &lterm);
 492                                 _nc_free_termtype(&lterm);
 493                             }
 494                         }
 495                         code = _nc_db_next(capdbp, &key, &data);
 496                     }
 497
 498                     _nc_db_close(capdbp);
 499                     continue;
 500                 }
 501             }
 502         }
 503 #endif
 504 #endif
 505 #if NCURSES_USE_TERMCAP
 506 #if HAVE_BSD_CGETENT
 507         {
 508             CGETENT_CONST char *db_array[2];
 509             char *buffer = 0;
 510
 511             if (verbosity)
 512                 (void) printf("#\n#%s:\n#\n", eargv[i]);
 513
 514             db_array[0] = eargv[i];
 515             db_array[1] = 0;
 516
 517             if (cgetfirst(&buffer, db_array) > 0) {
 518                 show_termcap(i, eargc, buffer, hook);
 519                 free(buffer);
 520                 while (cgetnext(&buffer, db_array) > 0) {
 521                     show_termcap(i, eargc, buffer, hook);
 522                     free(buffer);
 523                 }
 524                 cgetclose();
 525                 continue;
 526             }
 527         }
 528 #else
 529         /* scan termcap text-file only */
 530         if (_nc_is_file_path(eargv[i])) {
 531             char buffer[2048];
 532             FILE *fp;
 533
 534             if (verbosity)
 535                 (void) printf("#\n#%s:\n#\n", eargv[i]);
 536
 537             if ((fp = fopen(eargv[i], "r")) != 0) {
 538                 while (fgets(buffer, sizeof(buffer), fp) != 0) {
 539                     if (*buffer == '#')
 540                         continue;
 541                     if (isspace(*buffer))
 542                         continue;
 543                     show_termcap(i, eargc, buffer, hook);
 544                 }
 545                 fclose(fp);
 546             }
 547         }
 548 #endif
 549 #endif
 550     }
 551
 552     if (hook == sorthook) {
 553         show_termdata(eargc, eargv);
 554         free_termdata();
 555     }
 556
 557     return (EXIT_SUCCESS);
 558 }
 559
 560 static void
 561 usage(void)
 562 {
 563     (void) fprintf(stderr, "usage: %s [-ahsuUV] [-v n] [file...]\n", _nc_progname);
 564     ExitProgram(EXIT_FAILURE);
 565 }
 566
 567 int
 568 main(int argc, char *argv[])
 569 {
 570     bool all_dirs = FALSE;
 571     bool direct_dependencies = FALSE;
 572     bool invert_dependencies = FALSE;
 573     bool header = FALSE;
 574     char *report_file = 0;
 575     unsigned i;
 576     int code;
 577     int this_opt, last_opt = '?';
 578     unsigned v_opt = 0;
 579     DescHook *hook = deschook;
 580
 581     _nc_progname = _nc_rootname(argv[0]);
 582
 583     while ((this_opt = getopt(argc, argv, "0123456789ahsu:vU:V")) != -1) {
 584         /* handle optional parameter */
 585         if (isdigit(this_opt)) {
 586             switch (last_opt) {
 587             case 'v':
 588                 v_opt = (unsigned) (this_opt - '0');
 589                 break;
 590             default:
 591                 if (isdigit(last_opt))
 592                     v_opt *= 10;
 593                 else
 594                     v_opt = 0;
 595                 v_opt += (unsigned) (this_opt - '0');
 596                 last_opt = this_opt;
 597             }
 598             continue;
 599         }
 600         switch (this_opt) {
 601         case 'a':
 602             all_dirs = TRUE;
 603             break;
 604         case 'h':
 605             header = TRUE;
 606             break;
 607         case 's':
 608             hook = sorthook;
 609             break;
 610         case 'u':
 611             direct_dependencies = TRUE;
 612             report_file = optarg;
 613             break;
 614         case 'v':
 615             v_opt = 1;
 616             break;
 617         case 'U':
 618             invert_dependencies = TRUE;
 619             report_file = optarg;
 620             break;
 621         case 'V':
 622             puts(curses_version());
 623             ExitProgram(EXIT_SUCCESS);
 624         default:
 625             usage();
 626         }
 627     }
 628     set_trace_level(v_opt);
 629
 630     if (report_file != 0) {
 631         if (freopen(report_file, "r", stdin) == 0) {
 632             (void) fflush(stdout);
 633             fprintf(stderr, "%s: can't open %s\n", _nc_progname, report_file);
 634             ExitProgram(EXIT_FAILURE);
 635         }
 636
 637         /* parse entries out of the source file */
 638         _nc_set_source(report_file);
 639         _nc_read_entry_source(stdin, 0, FALSE, FALSE, NULLHOOK);
 640     }
 641
 642     /* maybe we want a direct-dependency listing? */
 643     if (direct_dependencies) {
 644         ENTRY *qp;
 645
 646         for_entry_list(qp) {
 647             if (qp->nuses) {
 648                 unsigned j;
 649
 650                 (void) printf("%s:", _nc_first_name(qp->tterm.term_names));
 651                 for (j = 0; j < qp->nuses; j++)
 652                     (void) printf(" %s", qp->uses[j].name);
 653                 putchar('\n');
 654             }
 655         }
 656
 657         ExitProgram(EXIT_SUCCESS);
 658     }
 659
 660     /* maybe we want a reverse-dependency listing? */
 661     if (invert_dependencies) {
 662         ENTRY *qp, *rp;
 663         int matchcount;
 664
 665         for_entry_list(qp) {
 666             matchcount = 0;
 667             for_entry_list(rp) {
 668                 if (rp->nuses == 0)
 669                     continue;
 670
 671                 for (i = 0; i < rp->nuses; i++)
 672                     if (_nc_name_match(qp->tterm.term_names,
 673                                        rp->uses[i].name, "|")) {
 674                         if (matchcount++ == 0)
 675                             (void) printf("%s:",
 676                                           _nc_first_name(qp->tterm.term_names));
 677                         (void) printf(" %s",
 678                                       _nc_first_name(rp->tterm.term_names));
 679                     }
 680             }
 681             if (matchcount)
 682                 putchar('\n');
 683         }
 684
 685         ExitProgram(EXIT_SUCCESS);
 686     }
 687
 688     /*
 689      * If we get this far, user wants a simple terminal type listing.
 690      */
 691     if (optind < argc) {
 692         code = typelist(argc - optind, argv + optind, header, hook);
 693     } else if (all_dirs) {
 694         DBDIRS state;
 695         int offset;
 696         int pass;
 697         const char *path;
 698         char **eargv = 0;
 699
 700         code = EXIT_FAILURE;
 701         for (pass = 0; pass < 2; ++pass) {
 702             size_t count = 0;
 703
 704             _nc_first_db(&state, &offset);
 705             while ((path = _nc_next_db(&state, &offset)) != 0) {
 706                 if (pass) {
 707                     eargv[count] = strmalloc(path);
 708                 }
 709                 ++count;
 710             }
 711             if (!pass) {
 712                 eargv = allocArgv(count);
 713                 if (eargv == 0)
 714                     failed("eargv");
 715             } else {
 716                 code = typelist((int) count, eargv, header, hook);
 717                 freeArgv(eargv);
 718             }
 719         }
 720     } else {
 721         DBDIRS state;
 722         int offset;
 723         const char *path;
 724         char **eargv = allocArgv((size_t) 2);
 725         size_t count = 0;
 726
 727         if (eargv == 0)
 728             failed("eargv");
 729         _nc_first_db(&state, &offset);
 730         if ((path = _nc_next_db(&state, &offset)) != 0) {
 731             eargv[count++] = strmalloc(path);
 732         }
 733
 734         code = typelist((int) count, eargv, header, hook);
 735
 736         freeArgv(eargv);
 737     }
 738     _nc_last_db();
 739
 740     ExitProgram(code);
 741 }