fortune/strfile/strfile.c

   1 /*      $NetBSD: strfile.c,v 1.8 1998/09/13 15:27:28 hubertf Exp $      */
   2
   3 /*-
   4  * Copyright (c) 1989, 1993
   5  *      The Regents of the University of California.  All rights reserved.
   6  *
   7  * This code is derived from software contributed to Berkeley by
   8  * Ken Arnold.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  * 3. All advertising materials mentioning features or use of this software
  19  *    must display the following acknowledgement:
  20  *      This product includes software developed by the University of
  21  *      California, Berkeley and its contributors.
  22  * 4. Neither the name of the University nor the names of its contributors
  23  *    may be used to endorse or promote products derived from this software
  24  *    without specific prior written permission.
  25  *
  26  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  27  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  28  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  29  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  30  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  31  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  32  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  33  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  34  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  35  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  36  * SUCH DAMAGE.
  37  */
  38
  39 #include <sys/cdefs.h>
  40 #ifndef lint
  41 __COPYRIGHT("@(#) Copyright (c) 1989, 1993\n\
  42         The Regents of the University of California.  All rights reserved.\n");
  43 #endif /* not lint */
  44
  45 #ifndef lint
  46 #if 0
  47 static char sccsid[] = "@(#)strfile.c   8.1 (Berkeley) 5/31/93";
  48 #else
  49 __RCSID("$NetBSD: strfile.c,v 1.8 1998/09/13 15:27:28 hubertf Exp $");
  50 #endif
  51 #endif /* not lint */
  52
  53 # include       <sys/types.h>
  54 # include       <sys/param.h>
  55 # include       <err.h>
  56 # include       <ctype.h>
  57 # include       <stdio.h>
  58 # include       <stdlib.h>
  59 # include       <string.h>
  60 # include       <unistd.h>
  61 # include       "strfile.h"
  62
  63 # ifndef MAXPATHLEN
  64 # define        MAXPATHLEN      1024
  65 # endif /* MAXPATHLEN */
  66
  67 /*
  68  *      This program takes a file composed of strings seperated by
  69  * lines starting with two consecutive delimiting character (default
  70  * character is '%') and creates another file which consists of a table
  71  * describing the file (structure from "strfile.h"), a table of seek
  72  * pointers to the start of the strings, and the strings, each terminated
  73  * by a null byte.  Usage:
  74  *
  75  *      % strfile [-iorsx] [ -cC ] sourcefile [ datafile ]
  76  *
  77  *      c - Change delimiting character from '%' to 'C'
  78  *      s - Silent.  Give no summary of data processed at the end of
  79  *          the run.
  80  *      o - order the strings in alphabetic order
  81  *      i - if ordering, ignore case
  82  *      r - randomize the order of the strings
  83  *      x - set rotated bit
  84  *
  85  *              Ken Arnold      Sept. 7, 1978 --
  86  *
  87  *      Added ordering options.
  88  */
  89
  90 # define        TRUE    1
  91 # define        FALSE   0
  92
  93 # define        STORING_PTRS    (Oflag || Rflag)
  94 # define        CHUNKSIZE       512
  95
  96 #ifdef lint
  97 # define        ALWAYS  atoi("1")
  98 #else
  99 # define        ALWAYS  1
 100 #endif
 101 # define        ALLOC(ptr,sz)   if (ALWAYS) { \
 102                         if (ptr == NULL) \
 103                                 ptr = malloc((unsigned int) (CHUNKSIZE * sizeof *ptr)); \
 104                         else if (((sz) + 1) % CHUNKSIZE == 0) \
 105                                 ptr = realloc((void *) ptr, ((unsigned int) ((sz) + CHUNKSIZE) * sizeof *ptr)); \
 106                         if (ptr == NULL) \
 107                                 errx(1, "out of space"); \
 108                 } else
 109
 110 #ifdef NO_VOID
 111 # define        void    char
 112 #endif
 113
 114 typedef struct {
 115         char    first;
 116         off_t   pos;
 117 } STR;
 118
 119 char    *Infile         = NULL,         /* input file name */
 120         Outfile[MAXPATHLEN] = "",       /* output file name */
 121         Delimch         = '%';          /* delimiting character */
 122
 123 int     Sflag           = FALSE;        /* silent run flag */
 124 int     Oflag           = FALSE;        /* ordering flag */
 125 int     Iflag           = FALSE;        /* ignore case flag */
 126 int     Rflag           = FALSE;        /* randomize order flag */
 127 int     Xflag           = FALSE;        /* set rotated bit */
 128 long    Num_pts         = 0;            /* number of pointers/strings */
 129
 130 off_t   *Seekpts;
 131
 132 FILE    *Sort_1, *Sort_2;               /* pointers for sorting */
 133
 134 STRFILE Tbl;                            /* statistics table */
 135
 136 STR     *Firstch;                       /* first chars of each string */
 137
 138 void    add_offset __P((FILE *, off_t));
 139 int     cmp_str __P((const void *, const void *));
 140 void    do_order __P((void));
 141 void    getargs __P((int, char *[]));
 142 int     main __P((int, char *[]));
 143 void    randomize __P((void));
 144 char   *unctrl __P((char));
 145 void    usage __P((void)) __attribute__((__noreturn__));
 146
 147
 148 /*
 149  * main:
 150  *      Drive the sucker.  There are two main modes -- either we store
 151  *      the seek pointers, if the table is to be sorted or randomized,
 152  *      or we write the pointer directly to the file, if we are to stay
 153  *      in file order.  If the former, we allocate and re-allocate in
 154  *      CHUNKSIZE blocks; if the latter, we just write each pointer,
 155  *      and then seek back to the beginning to write in the table.
 156  */
 157 int
 158 main(ac, av)
 159         int     ac;
 160         char    *av[];
 161 {
 162         char            *sp, dc;
 163         FILE            *inf, *outf;
 164         off_t           last_off, length, pos, *p;
 165         int             first, cnt;
 166         char            *nsp;
 167         STR             *fp;
 168         static char     string[257];
 169
 170         getargs(ac, av);                /* evalute arguments */
 171         dc = Delimch;
 172         if ((inf = fopen(Infile, "r")) == NULL)
 173                 err(1, "open `%s'", Infile);
 174
 175         if ((outf = fopen(Outfile, "w")) == NULL)
 176                 err(1, "open `%s'", Outfile);
 177         if (!STORING_PTRS)
 178                 (void) fseek(outf, sizeof Tbl, 0);
 179
 180         /*
 181          * Write the strings onto the file
 182          */
 183
 184         Tbl.str_longlen = 0;
 185         Tbl.str_shortlen = (unsigned int) 0xffffffff;
 186         Tbl.str_delim = dc;
 187         Tbl.str_version = VERSION;
 188         first = Oflag;
 189         add_offset(outf, ftell(inf));
 190         last_off = 0;
 191         do {
 192                 sp = fgets(string, 256, inf);
 193                 if (sp == NULL || (sp[0] == dc && sp[1] == '\n')) {
 194                         pos = ftell(inf);
 195                         length = pos - last_off - (sp ? strlen(sp) : 0);
 196                         last_off = pos;
 197                         if (!length)
 198                                 continue;
 199                         add_offset(outf, pos);
 200                         if (Tbl.str_longlen < length)
 201                                 Tbl.str_longlen = length;
 202                         if (Tbl.str_shortlen > length)
 203                                 Tbl.str_shortlen = length;
 204                         first = Oflag;
 205                 }
 206                 else if (first) {
 207                         for (nsp = sp; !isalnum(*nsp); nsp++)
 208                                 continue;
 209                         ALLOC(Firstch, Num_pts);
 210                         fp = &Firstch[Num_pts - 1];
 211                         if (Iflag && isupper(*nsp))
 212                                 fp->first = tolower(*nsp);
 213                         else
 214                                 fp->first = *nsp;
 215                         fp->pos = Seekpts[Num_pts - 1];
 216                         first = FALSE;
 217                 }
 218         } while (sp != NULL);
 219
 220         /*
 221          * write the tables in
 222          */
 223
 224         (void) fclose(inf);
 225
 226         if (Oflag)
 227                 do_order();
 228         else if (Rflag)
 229                 randomize();
 230
 231         if (Xflag)
 232                 Tbl.str_flags |= STR_ROTATED;
 233
 234         if (!Sflag) {
 235                 printf("\"%s\" created\n", Outfile);
 236                 if (Num_pts == 2)
 237                         puts("There was 1 string");
 238                 else
 239                         printf("There were %d strings\n", (int)(Num_pts - 1));
 240                 printf("Longest string: %lu byte%s\n", Tbl.str_longlen,
 241                        Tbl.str_longlen == 1 ? "" : "s");
 242                 printf("Shortest string: %lu byte%s\n", Tbl.str_shortlen,
 243                        Tbl.str_shortlen == 1 ? "" : "s");
 244         }
 245
 246         (void) fseek(outf, (off_t) 0, 0);
 247         Tbl.str_version = htonl(Tbl.str_version);
 248         Tbl.str_numstr = htonl(Num_pts - 1);
 249         Tbl.str_longlen = htonl(Tbl.str_longlen);
 250         Tbl.str_shortlen = htonl(Tbl.str_shortlen);
 251         Tbl.str_flags = htonl(Tbl.str_flags);
 252         (void) fwrite((char *) &Tbl, sizeof Tbl, 1, outf);
 253         if (STORING_PTRS) {
 254                 for (p = Seekpts, cnt = Num_pts; cnt--; ++p)
 255                         *p = htonl(*p);
 256                 (void) fwrite((char *) Seekpts, sizeof *Seekpts, (int) Num_pts, outf);
 257         }
 258         (void) fclose(outf);
 259         exit(0);
 260 }
 261
 262 /*
 263  *      This routine evaluates arguments from the command line
 264  */
 265 void
 266 getargs(argc, argv)
 267         int     argc;
 268         char    **argv;
 269 {
 270         int     ch;
 271
 272         while ((ch = getopt(argc, argv, "c:iorsx")) != -1)
 273                 switch(ch) {
 274                 case 'c':                       /* new delimiting char */
 275                         Delimch = *optarg;
 276                         if (!isascii(Delimch)) {
 277                                 printf("bad delimiting character: '\\%o\n'",
 278                                        Delimch);
 279                         }
 280                         break;
 281                 case 'i':                       /* ignore case in ordering */
 282                         Iflag++;
 283                         break;
 284                 case 'o':                       /* order strings */
 285                         Oflag++;
 286                         break;
 287                 case 'r':                       /* randomize pointers */
 288                         Rflag++;
 289                         break;
 290                 case 's':                       /* silent */
 291                         Sflag++;
 292                         break;
 293                 case 'x':                       /* set the rotated bit */
 294                         Xflag++;
 295                         break;
 296                 case '?':
 297                 default:
 298                         usage();
 299                 }
 300         argv += optind;
 301
 302         if (*argv) {
 303                 Infile = *argv;
 304                 if (*++argv)
 305                         (void) strcpy(Outfile, *argv);
 306         }
 307         if (!Infile) {
 308                 puts("No input file name");
 309                 usage();
 310         }
 311         if (*Outfile == '\0') {
 312                 (void) strcpy(Outfile, Infile);
 313                 (void) strcat(Outfile, ".dat");
 314         }
 315 }
 316
 317 void
 318 usage()
 319 {
 320         (void) fprintf(stderr,
 321             "strfile [-iorsx] [-c char] sourcefile [datafile]\n");
 322         exit(1);
 323 }
 324
 325 /*
 326  * add_offset:
 327  *      Add an offset to the list, or write it out, as appropriate.
 328  */
 329 void
 330 add_offset(fp, off)
 331         FILE    *fp;
 332         off_t   off;
 333 {
 334         off_t net;
 335
 336         if (!STORING_PTRS) {
 337                 net = htonl(off);
 338                 fwrite(&net, 1, sizeof net, fp);
 339         } else {
 340                 ALLOC(Seekpts, Num_pts + 1);
 341                 Seekpts[Num_pts] = off;
 342         }
 343         Num_pts++;
 344 }
 345
 346 /*
 347  * do_order:
 348  *      Order the strings alphabetically (possibly ignoring case).
 349  */
 350 void
 351 do_order()
 352 {
 353         int     i;
 354         off_t   *lp;
 355         STR     *fp;
 356
 357         Sort_1 = fopen(Infile, "r");
 358         Sort_2 = fopen(Infile, "r");
 359         qsort((char *) Firstch, (int) Tbl.str_numstr, sizeof *Firstch, cmp_str);
 360         i = Tbl.str_numstr;
 361         lp = Seekpts;
 362         fp = Firstch;
 363         while (i--)
 364                 *lp++ = fp++->pos;
 365         (void) fclose(Sort_1);
 366         (void) fclose(Sort_2);
 367         Tbl.str_flags |= STR_ORDERED;
 368 }
 369
 370 /*
 371  * cmp_str:
 372  *      Compare two strings in the file
 373  */
 374 char *
 375 unctrl(c)
 376         char c;
 377 {
 378         static char     buf[3];
 379
 380         if (isprint(c)) {
 381                 buf[0] = c;
 382                 buf[1] = '\0';
 383         }
 384         else if (c == 0177) {
 385                 buf[0] = '^';
 386                 buf[1] = '?';
 387         }
 388         else {
 389                 buf[0] = '^';
 390                 buf[1] = c + 'A' - 1;
 391         }
 392         return buf;
 393 }
 394
 395 int
 396 cmp_str(vp1, vp2)
 397         const void *vp1, *vp2;
 398 {
 399         STR     *p1, *p2;
 400         int     c1, c2;
 401         int     n1, n2;
 402
 403         p1 = (STR *)vp1;
 404         p2 = (STR *)vp2;
 405
 406 # define        SET_N(nf,ch)    (nf = (ch == '\n'))
 407 # define        IS_END(ch,nf)   (ch == Delimch && nf)
 408
 409         c1 = p1->first;
 410         c2 = p2->first;
 411         if (c1 != c2)
 412                 return c1 - c2;
 413
 414         (void) fseek(Sort_1, p1->pos, 0);
 415         (void) fseek(Sort_2, p2->pos, 0);
 416
 417         n1 = FALSE;
 418         n2 = FALSE;
 419         while (!isalnum(c1 = getc(Sort_1)) && c1 != '\0')
 420                 SET_N(n1, c1);
 421         while (!isalnum(c2 = getc(Sort_2)) && c2 != '\0')
 422                 SET_N(n2, c2);
 423
 424         while (!IS_END(c1, n1) && !IS_END(c2, n2)) {
 425                 if (Iflag) {
 426                         if (isupper(c1))
 427                                 c1 = tolower(c1);
 428                         if (isupper(c2))
 429                                 c2 = tolower(c2);
 430                 }
 431                 if (c1 != c2)
 432                         return c1 - c2;
 433                 SET_N(n1, c1);
 434                 SET_N(n2, c2);
 435                 c1 = getc(Sort_1);
 436                 c2 = getc(Sort_2);
 437         }
 438         if (IS_END(c1, n1))
 439                 c1 = 0;
 440         if (IS_END(c2, n2))
 441                 c2 = 0;
 442         return c1 - c2;
 443 }
 444
 445 /*
 446  * randomize:
 447  *      Randomize the order of the string table.  We must be careful
 448  *      not to randomize across delimiter boundaries.  All
 449  *      randomization is done within each block.
 450  */
 451 void
 452 randomize()
 453 {
 454         int     cnt, i;
 455         off_t   tmp;
 456         off_t   *sp;
 457
 458         srandom((int)(time((time_t *) NULL) + getpid()));
 459
 460         Tbl.str_flags |= STR_RANDOM;
 461         cnt = Tbl.str_numstr;
 462
 463         /*
 464          * move things around randomly
 465          */
 466
 467         for (sp = Seekpts; cnt > 0; cnt--, sp++) {
 468                 i = random() % cnt;
 469                 tmp = sp[0];
 470                 sp[0] = sp[i];
 471                 sp[i] = tmp;
 472         }
 473 }