1 /*- 2 * Copyright (c) 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 #ifndef lint 35 static const char copyright[] = 36 "@(#) Copyright (c) 1993\n\ 37 The Regents of the University of California. All rights reserved.\n"; 38 #endif /* not lint */ 39 40 #ifndef lint 41 #if 0 42 static char sccsid[] = "@(#)jot.c 8.1 (Berkeley) 6/6/93"; 43 #endif 44 static const char rcsid[] = 45 "$FreeBSD$"; 46 #endif /* not lint */ 47 48 /* 49 * jot - print sequential or random data 50 * 51 * Author: John Kunze, Office of Comp. Affairs, UCB 52 */ 53 54 #include <ctype.h> 55 #include <err.h> 56 #include <limits.h> 57 #include <stdio.h> 58 #include <stdlib.h> 59 #include <string.h> 60 #include <time.h> 61 #include <unistd.h> 62 63 #define REPS_DEF 100 64 #define BEGIN_DEF 1 65 #define ENDER_DEF 100 66 #define STEP_DEF 1 67 68 #define isdefault(s) (strcmp((s), "-") == 0) 69 70 double begin; 71 double ender; 72 double s; 73 long reps; 74 int randomize; 75 int infinity; 76 int boring; 77 int prec; 78 int longdata; 79 int intdata; 80 int chardata; 81 int nosign; 82 int nofinalnl; 83 char *sepstring = "\n"; 84 char format[BUFSIZ]; 85 86 void getargs __P((int, char *[])); 87 void getformat __P((void)); 88 int getprec __P((char *)); 89 int putdata __P((double, long)); 90 static void usage __P((void)); 91 92 int 93 main(argc, argv) 94 int argc; 95 char *argv[]; 96 { 97 double xd, yd; 98 long id; 99 register double *x = &xd; 100 register double *y = &yd; 101 register long *i = &id; 102 103 getargs(argc, argv); 104 if (randomize) { 105 *x = (ender - begin) * (ender > begin ? 1 : -1); 106 for (*i = 1; *i <= reps || infinity; (*i)++) { 107 *y = (double) arc4random() / ULONG_MAX; 108 if (putdata(*y * *x + begin, reps - *i)) 109 errx(1, "range error in conversion"); 110 } 111 } else 112 for (*i = 1, *x = begin; *i <= reps || infinity; (*i)++, *x += s) 113 if (putdata(*x, reps - *i)) 114 errx(1, "range error in conversion"); 115 if (!nofinalnl) 116 putchar('\n'); 117 exit(0); 118 } 119 120 void 121 getargs(ac, av) 122 int ac; 123 char *av[]; 124 { 125 register unsigned int mask = 0; 126 register int n = 0; 127 128 while (--ac && **++av == '-' && !isdefault(*av)) 129 switch ((*av)[1]) { 130 case 'r': 131 randomize = 1; 132 break; 133 case 'c': 134 chardata = 1; 135 break; 136 case 'n': 137 nofinalnl = 1; 138 break; 139 case 'b': 140 boring = 1; 141 case 'w': 142 if ((*av)[2]) 143 strcpy(format, *av + 2); 144 else if (!--ac) 145 errx(1, "need context word after -w or -b"); 146 else 147 strcpy(format, *++av); 148 break; 149 case 's': 150 if ((*av)[2]) 151 sepstring = *av + 2; 152 else if (!--ac) 153 errx(1, "need string after -s"); 154 else 155 sepstring = *++av; 156 break; 157 case 'p': 158 if ((*av)[2]) 159 prec = atoi(*av + 2); 160 else if (!--ac) 161 errx(1, "need number after -p"); 162 else 163 prec = atoi(*++av); 164 if (prec <= 0) 165 errx(1, "bad precision value"); 166 break; 167 default: 168 usage(); 169 } 170 171 switch (ac) { /* examine args right to left, falling thru cases */ 172 case 4: 173 if (!isdefault(av[3])) { 174 if (!sscanf(av[3], "%lf", &s)) 175 errx(1, "bad s value: %s", av[3]); 176 mask |= 01; 177 } 178 case 3: 179 if (!isdefault(av[2])) { 180 if (!sscanf(av[2], "%lf", &ender)) 181 ender = av[2][strlen(av[2])-1]; 182 mask |= 02; 183 if (!prec) 184 n = getprec(av[2]); 185 } 186 case 2: 187 if (!isdefault(av[1])) { 188 if (!sscanf(av[1], "%lf", &begin)) 189 begin = av[1][strlen(av[1])-1]; 190 mask |= 04; 191 if (!prec) 192 prec = getprec(av[1]); 193 if (n > prec) /* maximum precision */ 194 prec = n; 195 } 196 case 1: 197 if (!isdefault(av[0])) { 198 if (!sscanf(av[0], "%ld", &reps)) 199 errx(1, "bad reps value: %s", av[0]); 200 mask |= 010; 201 } 202 break; 203 case 0: 204 usage(); 205 default: 206 errx(1, "too many arguments. What do you mean by %s?", av[4]); 207 } 208 getformat(); 209 while (mask) /* 4 bit mask has 1's where last 4 args were given */ 210 switch (mask) { /* fill in the 0's by default or computation */ 211 case 001: 212 reps = REPS_DEF; 213 mask = 011; 214 break; 215 case 002: 216 reps = REPS_DEF; 217 mask = 012; 218 break; 219 case 003: 220 reps = REPS_DEF; 221 mask = 013; 222 break; 223 case 004: 224 reps = REPS_DEF; 225 mask = 014; 226 break; 227 case 005: 228 reps = REPS_DEF; 229 mask = 015; 230 break; 231 case 006: 232 reps = REPS_DEF; 233 mask = 016; 234 break; 235 case 007: 236 if (randomize) { 237 reps = REPS_DEF; 238 mask = 0; 239 break; 240 } 241 if (s == 0.0) { 242 reps = 0; 243 mask = 0; 244 break; 245 } 246 reps = (ender - begin + s) / s; 247 if (reps <= 0) 248 errx(1, "impossible stepsize"); 249 mask = 0; 250 break; 251 case 010: 252 begin = BEGIN_DEF; 253 mask = 014; 254 break; 255 case 011: 256 begin = BEGIN_DEF; 257 mask = 015; 258 break; 259 case 012: 260 s = (randomize ? -1.0 : STEP_DEF); 261 mask = 013; 262 break; 263 case 013: 264 if (randomize) 265 begin = BEGIN_DEF; 266 else if (reps == 0) 267 errx(1, "must specify begin if reps == 0"); 268 else 269 begin = ender - reps * s + s; 270 mask = 0; 271 break; 272 case 014: 273 s = (randomize ? -1.0 : STEP_DEF); 274 mask = 015; 275 break; 276 case 015: 277 if (randomize) 278 ender = ENDER_DEF; 279 else 280 ender = begin + reps * s - s; 281 mask = 0; 282 break; 283 case 016: 284 if (randomize) 285 s = -1.0; 286 else if (reps == 0) 287 errx(1, "infinite sequences cannot be bounded"); 288 else if (reps == 1) 289 s = 0.0; 290 else 291 s = (ender - begin) / (reps - 1); 292 mask = 0; 293 break; 294 case 017: /* if reps given and implied, */ 295 if (!randomize && s != 0.0) { 296 long t = (ender - begin + s) / s; 297 if (t <= 0) 298 errx(1, "impossible stepsize"); 299 if (t < reps) /* take lesser */ 300 reps = t; 301 } 302 mask = 0; 303 break; 304 default: 305 errx(1, "bad mask"); 306 } 307 if (reps == 0) 308 infinity = 1; 309 } 310 311 int 312 putdata(x, notlast) 313 double x; 314 long notlast; 315 { 316 317 if (boring) 318 printf("%s", format); 319 else if (longdata && nosign) { 320 if (x <= (double)ULONG_MAX && x >= (double)0) 321 printf(format, (unsigned long)x); 322 else 323 return (1); 324 } else if (longdata) { 325 if (x <= (double)LONG_MAX && x >= (double)LONG_MIN) 326 printf(format, (long)x); 327 else 328 return (1); 329 } else if (chardata || (intdata && !nosign)) { 330 if (x <= (double)INT_MAX && x >= (double)INT_MIN) 331 printf(format, (int)x); 332 else 333 return (1); 334 } else if (intdata) { 335 if (x <= (double)UINT_MAX && x >= (double)0) 336 printf(format, (unsigned int)x); 337 else 338 return (1); 339 340 } else 341 printf(format, x); 342 if (notlast != 0) 343 fputs(sepstring, stdout); 344 345 return (0); 346 } 347 348 static void 349 usage() 350 { 351 fprintf(stderr, "%s\n%s\n", 352 "usage: jot [-cnr] [-b word] [-w word] [-s string] [-p precision]", 353 " [reps [begin [end [s]]]]"); 354 exit(1); 355 } 356 357 int 358 getprec(s) 359 char *s; 360 { 361 register char *p; 362 register char *q; 363 364 for (p = s; *p; p++) 365 if (*p == '.') 366 break; 367 if (!*p) 368 return (0); 369 for (q = ++p; *p; p++) 370 if (!isdigit(*p)) 371 break; 372 return (p - q); 373 } 374 375 void 376 getformat() 377 { 378 register char *p; 379 int dot, hash, space, sign, numbers = 0; 380 char *s; 381 382 if (boring) /* no need to bother */ 383 return; 384 for (p = format; *p; p++) /* look for '%' */ 385 if (*p == '%' && *(p+1) != '%') /* leave %% alone */ 386 break; 387 if (!*p && !chardata) 388 sprintf(p, "%%.%df", prec); 389 else if (!*p && chardata) { 390 strcpy(p, "%c"); 391 intdata = 1; 392 } else if (!*(p+1)) 393 strcat(format, "%"); /* cannot end in single '%' */ 394 else { 395 /* 396 * Allow conversion format specifiers of the form 397 * %[#][ ][{+,-}][0-9]*[.[0-9]*]? where ? must be one of 398 * [l]{d,i,o,u,x} or {f,e,g,E,G,d,o,x,D,O,U,X,c,u} 399 */ 400 s = p++; 401 dot = hash = space = sign = numbers = 0; 402 while (!isalpha(*p)) { 403 if (isdigit(*p)) { 404 numbers++; 405 p++; 406 } else if ((*p == '#' && !(numbers|dot|sign|space| 407 hash++)) || 408 (*p == ' ' && !(numbers|dot|space++)) || 409 ((*p == '+' || *p == '-') && !(numbers|dot|sign++)) 410 || (*p == '.' && !(dot++))) 411 p++; 412 else 413 goto fmt_broken; 414 } 415 if (*p == 'l') { 416 longdata = 1; 417 if (*++p == 'l') { 418 if (p[1] != '\0') 419 p++; 420 goto fmt_broken; 421 } 422 } 423 switch (*p) { 424 case 'o': case 'u': case 'x': case 'X': 425 intdata = nosign = 1; 426 break; 427 case 'd': case 'i': 428 intdata = 1; 429 break; 430 case 'D': 431 if (!longdata) { 432 intdata = 1; 433 break; 434 } 435 case 'O': case 'U': 436 if (!longdata) { 437 intdata = nosign = 1; 438 break; 439 } 440 case 'c': 441 if (!(intdata | longdata)) { 442 chardata = 1; 443 break; 444 } 445 case 'h': case 'n': case 'p': case 'q': case 's': case 'L': 446 case '$': case '*': 447 goto fmt_broken; 448 case 'f': case 'e': case 'g': case 'E': case 'G': 449 if (!longdata) 450 break; 451 /* FALLTHROUGH */ 452 default: 453 fmt_broken: 454 *++p = '\0'; 455 errx(1, "illegal or unsupported format '%s'", s); 456 /* NOTREACHED */ 457 } 458 while (*++p) 459 if (*p == '%' && *(p+1) && *(p+1) != '%') 460 errx(1, "too many conversions"); 461 else if (*p == '%' && *(p+1) == '%') 462 p++; 463 else if (*p == '%' && !*(p+1)) { 464 strcat(format, "%"); 465 break; 466 } 467 } 468 } 469