1 /*- 2 * Copyright (c) 1989, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * Ken Arnold. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. Neither the name of the University nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 */ 32 33 #if 0 34 #ifndef lint 35 static const char copyright[] = 36 "@(#) Copyright (c) 1989, 1993\n\ 37 The Regents of the University of California. All rights reserved.\n"; 38 #endif /* not lint */ 39 40 #ifndef lint 41 static const char sccsid[] = "@(#)strfile.c 8.1 (Berkeley) 5/31/93"; 42 #endif /* not lint */ 43 #endif 44 #include <sys/cdefs.h> 45 __FBSDID("$FreeBSD$"); 46 47 #include <sys/param.h> 48 #include <sys/endian.h> 49 #include <ctype.h> 50 #include <locale.h> 51 #include <stdbool.h> 52 #include <stdio.h> 53 #include <stdlib.h> 54 #include <string.h> 55 #include <time.h> 56 #include <unistd.h> 57 58 #include "strfile.h" 59 60 /* 61 * This program takes a file composed of strings separated by 62 * lines starting with two consecutive delimiting character (default 63 * character is '%') and creates another file which consists of a table 64 * describing the file (structure from "strfile.h"), a table of seek 65 * pointers to the start of the strings, and the strings, each terminated 66 * by a null byte. Usage: 67 * 68 * % strfile [-iorsx] [ -cC ] sourcefile [ datafile ] 69 * 70 * C - Allow comments marked by a double delimiter at line's beginning 71 * c - Change delimiting character from '%' to 'C' 72 * s - Silent. Give no summary of data processed at the end of 73 * the run. 74 * o - order the strings in alphabetic order 75 * i - if ordering, ignore case 76 * r - randomize the order of the strings 77 * x - set rotated bit 78 * 79 * Ken Arnold Sept. 7, 1978 -- 80 * 81 * Added ordering options. 82 */ 83 84 #define STORING_PTRS (Oflag || Rflag) 85 #define CHUNKSIZE 512 86 87 #define ALLOC(ptr, sz) do { \ 88 if (ptr == NULL) \ 89 ptr = malloc(CHUNKSIZE * sizeof(*ptr)); \ 90 else if (((sz) + 1) % CHUNKSIZE == 0) \ 91 ptr = realloc(ptr, ((sz) + CHUNKSIZE) * sizeof(*ptr)); \ 92 if (ptr == NULL) { \ 93 fprintf(stderr, "out of space\n"); \ 94 exit(1); \ 95 } \ 96 } while (0) 97 98 typedef struct { 99 int first; 100 off_t pos; 101 } STR; 102 103 static char *Infile = NULL, /* input file name */ 104 Outfile[MAXPATHLEN] = "", /* output file name */ 105 Delimch = '%'; /* delimiting character */ 106 107 static int Cflag = false; /* embedded comments */ 108 static int Sflag = false; /* silent run flag */ 109 static int Oflag = false; /* ordering flag */ 110 static int Iflag = false; /* ignore case flag */ 111 static int Rflag = false; /* randomize order flag */ 112 static int Xflag = false; /* set rotated bit */ 113 static uint32_t Num_pts = 0; /* number of pointers/strings */ 114 115 static off_t *Seekpts; 116 117 static FILE *Sort_1, *Sort_2; /* pointers for sorting */ 118 119 static STRFILE Tbl; /* statistics table */ 120 121 static STR *Firstch; /* first chars of each string */ 122 123 static void add_offset(FILE *, off_t); 124 static int cmp_str(const void *, const void *); 125 static int stable_collate_range_cmp(int, int); 126 static void do_order(void); 127 static void getargs(int, char **); 128 static void randomize(void); 129 static void usage(void); 130 131 /* 132 * main: 133 * Drive the sucker. There are two main modes -- either we store 134 * the seek pointers, if the table is to be sorted or randomized, 135 * or we write the pointer directly to the file, if we are to stay 136 * in file order. If the former, we allocate and re-allocate in 137 * CHUNKSIZE blocks; if the latter, we just write each pointer, 138 * and then seek back to the beginning to write in the table. 139 */ 140 int 141 main(int ac, char *av[]) 142 { 143 char *sp, *nsp, dc; 144 FILE *inf, *outf; 145 off_t last_off, pos, *p; 146 size_t length; 147 int first; 148 uint32_t cnt; 149 STR *fp; 150 static char string[257]; 151 152 setlocale(LC_ALL, ""); 153 154 getargs(ac, av); /* evalute arguments */ 155 dc = Delimch; 156 if ((inf = fopen(Infile, "r")) == NULL) { 157 perror(Infile); 158 exit(1); 159 } 160 161 if ((outf = fopen(Outfile, "w")) == NULL) { 162 perror(Outfile); 163 exit(1); 164 } 165 if (!STORING_PTRS) 166 fseek(outf, (long)sizeof(Tbl), SEEK_SET); 167 168 /* 169 * Write the strings onto the file 170 */ 171 172 Tbl.str_longlen = 0; 173 Tbl.str_shortlen = 0xffffffff; 174 Tbl.str_delim = dc; 175 Tbl.str_version = VERSION; 176 first = Oflag; 177 add_offset(outf, ftello(inf)); 178 last_off = 0; 179 do { 180 sp = fgets(string, 256, inf); 181 if (sp == NULL || (sp[0] == dc && sp[1] == '\n')) { 182 pos = ftello(inf); 183 length = (size_t)(pos - last_off) - 184 (sp != NULL ? strlen(sp) : 0); 185 last_off = pos; 186 if (length == 0) 187 continue; 188 add_offset(outf, pos); 189 if ((size_t)Tbl.str_longlen < length) 190 Tbl.str_longlen = length; 191 if ((size_t)Tbl.str_shortlen > length) 192 Tbl.str_shortlen = length; 193 first = Oflag; 194 } 195 else if (first) { 196 for (nsp = sp; !isalnum((unsigned char)*nsp); nsp++) 197 continue; 198 ALLOC(Firstch, Num_pts); 199 fp = &Firstch[Num_pts - 1]; 200 if (Iflag && isupper((unsigned char)*nsp)) 201 fp->first = tolower((unsigned char)*nsp); 202 else 203 fp->first = *nsp; 204 fp->pos = Seekpts[Num_pts - 1]; 205 first = false; 206 } 207 } while (sp != NULL); 208 209 /* 210 * write the tables in 211 */ 212 213 fclose(inf); 214 Tbl.str_numstr = Num_pts - 1; 215 216 if (Cflag) 217 Tbl.str_flags |= STR_COMMENTS; 218 219 if (Oflag) 220 do_order(); 221 else if (Rflag) 222 randomize(); 223 224 if (Xflag) 225 Tbl.str_flags |= STR_ROTATED; 226 227 if (!Sflag) { 228 printf("\"%s\" created\n", Outfile); 229 if (Num_pts == 2) 230 puts("There was 1 string"); 231 else 232 printf("There were %u strings\n", Num_pts - 1); 233 printf("Longest string: %u byte%s\n", Tbl.str_longlen, 234 Tbl.str_longlen == 1 ? "" : "s"); 235 printf("Shortest string: %u byte%s\n", Tbl.str_shortlen, 236 Tbl.str_shortlen == 1 ? "" : "s"); 237 } 238 239 rewind(outf); 240 Tbl.str_version = htobe32(Tbl.str_version); 241 Tbl.str_numstr = htobe32(Tbl.str_numstr); 242 Tbl.str_longlen = htobe32(Tbl.str_longlen); 243 Tbl.str_shortlen = htobe32(Tbl.str_shortlen); 244 Tbl.str_flags = htobe32(Tbl.str_flags); 245 fwrite((char *)&Tbl, sizeof(Tbl), 1, outf); 246 if (STORING_PTRS) { 247 for (p = Seekpts, cnt = Num_pts; cnt--; ++p) 248 *p = htobe64(*p); 249 fwrite(Seekpts, sizeof(*Seekpts), (size_t)Num_pts, outf); 250 } 251 fclose(outf); 252 exit(0); 253 } 254 255 /* 256 * This routine evaluates arguments from the command line 257 */ 258 void 259 getargs(int argc, char **argv) 260 { 261 int ch; 262 263 while ((ch = getopt(argc, argv, "Cc:iorsx")) != -1) 264 switch(ch) { 265 case 'C': /* embedded comments */ 266 Cflag++; 267 break; 268 case 'c': /* new delimiting char */ 269 Delimch = *optarg; 270 if (!isascii(Delimch)) { 271 printf("bad delimiting character: '\\%o\n'", 272 (unsigned char)Delimch); 273 } 274 break; 275 case 'i': /* ignore case in ordering */ 276 Iflag++; 277 break; 278 case 'o': /* order strings */ 279 Oflag++; 280 break; 281 case 'r': /* randomize pointers */ 282 Rflag++; 283 break; 284 case 's': /* silent */ 285 Sflag++; 286 break; 287 case 'x': /* set the rotated bit */ 288 Xflag++; 289 break; 290 case '?': 291 default: 292 usage(); 293 } 294 argv += optind; 295 296 if (*argv) { 297 Infile = *argv; 298 if (*++argv) 299 strcpy(Outfile, *argv); 300 } 301 if (!Infile) { 302 puts("No input file name"); 303 usage(); 304 } 305 if (*Outfile == '\0') { 306 strlcpy(Outfile, Infile, sizeof(Outfile)); 307 strlcat(Outfile, ".dat", sizeof(Outfile)); 308 } 309 } 310 311 void 312 usage(void) 313 { 314 fprintf(stderr, 315 "strfile [-Ciorsx] [-c char] source_file [output_file]\n"); 316 exit(1); 317 } 318 319 /* 320 * add_offset: 321 * Add an offset to the list, or write it out, as appropriate. 322 */ 323 void 324 add_offset(FILE *fp, off_t off) 325 { 326 off_t beoff; 327 328 if (!STORING_PTRS) { 329 beoff = htobe64(off); 330 fwrite(&beoff, 1, sizeof(beoff), fp); 331 } else { 332 ALLOC(Seekpts, Num_pts + 1); 333 Seekpts[Num_pts] = off; 334 } 335 Num_pts++; 336 } 337 338 /* 339 * do_order: 340 * Order the strings alphabetically (possibly ignoring case). 341 */ 342 void 343 do_order(void) 344 { 345 uint32_t i; 346 off_t *lp; 347 STR *fp; 348 349 Sort_1 = fopen(Infile, "r"); 350 Sort_2 = fopen(Infile, "r"); 351 qsort(Firstch, (size_t)Tbl.str_numstr, sizeof(*Firstch), cmp_str); 352 i = Tbl.str_numstr; 353 lp = Seekpts; 354 fp = Firstch; 355 while (i--) 356 *lp++ = fp++->pos; 357 fclose(Sort_1); 358 fclose(Sort_2); 359 Tbl.str_flags |= STR_ORDERED; 360 } 361 362 static int 363 stable_collate_range_cmp(int c1, int c2) 364 { 365 static char s1[2], s2[2]; 366 int ret; 367 368 s1[0] = c1; 369 s2[0] = c2; 370 if ((ret = strcoll(s1, s2)) != 0) 371 return (ret); 372 return (c1 - c2); 373 } 374 375 /* 376 * cmp_str: 377 * Compare two strings in the file 378 */ 379 int 380 cmp_str(const void *s1, const void *s2) 381 { 382 const STR *p1, *p2; 383 int c1, c2, n1, n2, r; 384 385 #define SET_N(nf,ch) (nf = (ch == '\n')) 386 #define IS_END(ch,nf) (ch == EOF || (ch == (unsigned char)Delimch && nf)) 387 388 p1 = (const STR *)s1; 389 p2 = (const STR *)s2; 390 391 c1 = (unsigned char)p1->first; 392 c2 = (unsigned char)p2->first; 393 if ((r = stable_collate_range_cmp(c1, c2)) != 0) 394 return (r); 395 396 fseeko(Sort_1, p1->pos, SEEK_SET); 397 fseeko(Sort_2, p2->pos, SEEK_SET); 398 399 n1 = false; 400 n2 = false; 401 while (!isalnum(c1 = getc(Sort_1)) && c1 != '\0' && c1 != EOF) 402 SET_N(n1, c1); 403 while (!isalnum(c2 = getc(Sort_2)) && c2 != '\0' && c2 != EOF) 404 SET_N(n2, c2); 405 406 while (!IS_END(c1, n1) && !IS_END(c2, n2)) { 407 if (Iflag) { 408 if (isupper(c1)) 409 c1 = tolower(c1); 410 if (isupper(c2)) 411 c2 = tolower(c2); 412 } 413 if ((r = stable_collate_range_cmp(c1, c2)) != 0) 414 return (r); 415 SET_N(n1, c1); 416 SET_N(n2, c2); 417 c1 = getc(Sort_1); 418 c2 = getc(Sort_2); 419 } 420 if (IS_END(c1, n1)) 421 c1 = 0; 422 if (IS_END(c2, n2)) 423 c2 = 0; 424 425 return (stable_collate_range_cmp(c1, c2)); 426 } 427 428 /* 429 * randomize: 430 * Randomize the order of the string table. We must be careful 431 * not to randomize across delimiter boundaries. All 432 * randomization is done within each block. 433 */ 434 void 435 randomize(void) 436 { 437 uint32_t cnt, i; 438 off_t tmp; 439 off_t *sp; 440 441 Tbl.str_flags |= STR_RANDOM; 442 cnt = Tbl.str_numstr; 443 444 /* 445 * move things around randomly 446 */ 447 448 for (sp = Seekpts; cnt > 0; cnt--, sp++) { 449 i = arc4random_uniform(cnt); 450 tmp = sp[0]; 451 sp[0] = sp[i]; 452 sp[i] = tmp; 453 } 454 } 455