jot.c revision 1.7
1 /* $NetBSD: jot.c,v 1.7 2001/03/14 07:50:06 jdolecek Exp $ */ 2 3 /*- 4 * Copyright (c) 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #include <sys/cdefs.h> 37 #ifndef lint 38 __COPYRIGHT("@(#) Copyright (c) 1993\n\ 39 The Regents of the University of California. All rights reserved.\n"); 40 #endif /* not lint */ 41 42 #ifndef lint 43 #if 0 44 static char sccsid[] = "@(#)jot.c 8.1 (Berkeley) 6/6/93"; 45 #endif 46 __RCSID("$NetBSD: jot.c,v 1.7 2001/03/14 07:50:06 jdolecek Exp $"); 47 #endif /* not lint */ 48 49 /* 50 * jot - print sequential or random data 51 * 52 * Author: John Kunze, Office of Comp. Affairs, UCB 53 */ 54 55 #include <ctype.h> 56 #include <err.h> 57 #include <limits.h> 58 #include <stdio.h> 59 #include <stdlib.h> 60 #include <string.h> 61 #include <time.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 is_default(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 dox; 79 int chardata; 80 int nofinalnl; 81 char sepstring[BUFSIZ] = "\n"; 82 char format[BUFSIZ]; 83 84 void getargs __P((int, char *[])); 85 void getformat __P((void)); 86 int getprec __P((char *)); 87 int main __P((int, char **)); 88 void putdata __P((double, long)); 89 static void usage __P((void)); 90 91 int 92 main(argc, argv) 93 int argc; 94 char *argv[]; 95 { 96 double xd, yd; 97 long id; 98 double *x = &xd; 99 double *y = &yd; 100 long *i = &id; 101 102 getargs(argc, argv); 103 if (randomize) { 104 *x = (ender - begin) * (ender > begin ? 1 : -1); 105 srandom((int) s); 106 for (*i = 1; *i <= reps || infinity; (*i)++) { 107 *y = (double) random() / INT_MAX; 108 putdata(*y * *x + begin, reps - *i); 109 } 110 } 111 else 112 for (*i = 1, *x = begin; *i <= reps || infinity; (*i)++, *x += s) 113 putdata(*x, reps - *i); 114 if (!nofinalnl) 115 putchar('\n'); 116 exit(0); 117 } 118 119 void 120 getargs(argc, argv) 121 int argc; 122 char *argv[]; 123 { 124 unsigned int mask = 0; 125 int n = 0; 126 127 while (--argc && **++argv == '-' && !is_default(*argv)) 128 switch ((*argv)[1]) { 129 case 'r': 130 randomize = 1; 131 break; 132 case 'c': 133 chardata = 1; 134 break; 135 case 'n': 136 nofinalnl = 1; 137 break; 138 case 'b': 139 boring = 1; 140 case 'w': 141 if ((*argv)[2]) 142 strcpy(format, *argv + 2); 143 else if (!--argc) 144 errx(1, "Need context word after -w or -b"); 145 else 146 strcpy(format, *++argv); 147 break; 148 case 's': 149 if ((*argv)[2]) 150 strcpy(sepstring, *argv + 2); 151 else if (!--argc) 152 errx(1, "Need string after -s"); 153 else 154 strcpy(sepstring, *++argv); 155 break; 156 case 'p': 157 if ((*argv)[2]) 158 prec = atoi(*argv + 2); 159 else if (!--argc) 160 errx(1, "Need number after -p"); 161 else 162 prec = atoi(*++argv); 163 if (prec <= 0) 164 errx(1, "Bad precision value"); 165 break; 166 default: 167 warnx("unknown option `%s'", *argv); 168 usage(); 169 } 170 171 switch (argc) { /* examine args right to left, falling thru cases */ 172 case 4: 173 if (!is_default(argv[3])) { 174 if (!sscanf(argv[3], "%lf", &s)) 175 errx(1, "Bad s value: %s", argv[3]); 176 mask |= 01; 177 } 178 case 3: 179 if (!is_default(argv[2])) { 180 if (!sscanf(argv[2], "%lf", &ender)) 181 ender = argv[2][strlen(argv[2])-1]; 182 mask |= 02; 183 if (!prec) 184 n = getprec(argv[2]); 185 } 186 case 2: 187 if (!is_default(argv[1])) { 188 if (!sscanf(argv[1], "%lf", &begin)) 189 begin = argv[1][strlen(argv[1])-1]; 190 mask |= 04; 191 if (!prec) 192 prec = getprec(argv[1]); 193 if (n > prec) /* maximum precision */ 194 prec = n; 195 } 196 case 1: 197 if (!is_default(argv[0])) { 198 if (!sscanf(argv[0], "%ld", &reps)) 199 errx(1, "Bad reps value: %s", argv[0]); 200 mask |= 010; 201 } 202 break; 203 case 0: 204 usage(); 205 break; 206 default: 207 errx(1, "Too many arguments. What do you mean by %s?", argv[4]); 208 } 209 getformat(); 210 while (mask) /* 4 bit mask has 1's where last 4 args were given */ 211 switch (mask) { /* fill in the 0's by default or computation */ 212 case 001: 213 reps = REPS_DEF; 214 mask = 011; 215 break; 216 case 002: 217 reps = REPS_DEF; 218 mask = 012; 219 break; 220 case 003: 221 reps = REPS_DEF; 222 mask = 013; 223 break; 224 case 004: 225 reps = REPS_DEF; 226 mask = 014; 227 break; 228 case 005: 229 reps = REPS_DEF; 230 mask = 015; 231 break; 232 case 006: 233 reps = REPS_DEF; 234 mask = 016; 235 break; 236 case 007: 237 if (randomize) { 238 reps = REPS_DEF; 239 mask = 0; 240 break; 241 } 242 if (s == 0.0) { 243 reps = 0; 244 mask = 0; 245 break; 246 } 247 reps = (ender - begin + s) / s; 248 if (reps <= 0) 249 errx(1, "Impossible stepsize"); 250 mask = 0; 251 break; 252 case 010: 253 begin = BEGIN_DEF; 254 mask = 014; 255 break; 256 case 011: 257 begin = BEGIN_DEF; 258 mask = 015; 259 break; 260 case 012: 261 s = (randomize ? time(NULL) : STEP_DEF); 262 mask = 013; 263 break; 264 case 013: 265 if (randomize) 266 begin = BEGIN_DEF; 267 else if (reps == 0) 268 errx(1, "Must specify begin if reps == 0"); 269 begin = ender - reps * s + s; 270 mask = 0; 271 break; 272 case 014: 273 s = (randomize ? time(NULL) : 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 = time(NULL); 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 void 312 putdata(x, notlast) 313 double x; 314 long notlast; 315 { 316 long d = x; 317 long *dp = &d; 318 319 if (boring) /* repeated word */ 320 printf("%s", format); 321 else if (dox) /* scalar */ 322 printf(format, *dp); 323 else /* real */ 324 printf(format, x); 325 if (notlast != 0) 326 fputs(sepstring, stdout); 327 } 328 329 static void 330 usage(void) 331 { 332 fprintf(stderr, "jot - print sequential or random data\n\n"); 333 fprintf(stderr, 334 "Usage:\n\tjot [ options ] [ reps [ begin [ end [ s ] ] ] ]\n\n"); 335 fprintf(stderr, "Options:\n\t%s\t%s\t%s\t%s\t%s\t%s\t%s", 336 "-r random data\n", 337 "-c character data\n", 338 "-n no final newline\n", 339 "-b word repeated word\n", 340 "-w word context word\n", 341 "-s string data separator\n", 342 "-p precision number of characters\n"); 343 exit(1); 344 } 345 346 int 347 getprec(s) 348 char *s; 349 { 350 char *p; 351 char *q; 352 353 for (p = s; *p; p++) 354 if (*p == '.') 355 break; 356 if (!*p) 357 return (0); 358 for (q = ++p; *p; p++) 359 if (!isdigit((unsigned char)*p)) 360 break; 361 return (p - q); 362 } 363 364 void 365 getformat() 366 { 367 char *p; 368 size_t sz; 369 370 if (boring) /* no need to bother */ 371 return; 372 for (p = format; *p; p++) /* look for '%' */ 373 if (*p == '%') { 374 if (*(p+1) != '%') 375 break; 376 p++; /* leave %% alone */ 377 } 378 sz = sizeof(format) - strlen(format) - 1; 379 if (!*p) { 380 if (chardata) { 381 if (snprintf(p, sz, "%%.%df", prec) >= (int)sz) 382 errx(1, "-w word too long"); 383 } else { 384 if (strlcpy(p, "%c", sz) >= sz) 385 errx(1, "-w word too long"); 386 dox = 1; 387 } 388 } else if (!*(p+1)) { 389 if (sz <= 0) 390 errx(1, "-w word too long"); 391 strcat(format, "%"); /* cannot end in single '%' */ 392 } else { 393 p++; /* skip leading % */ 394 for(; *p && !isalpha((unsigned char)*p); p++) { 395 /* allow all valid printf(3) flags, but deny '*' */ 396 if (!strchr("0123456789#-+. ", *p)) 397 break; 398 } 399 /* Allow 'l' prefix, but no other. */ 400 if (*p == 'l') 401 p++; 402 switch (*p) { 403 case 'f': case 'e': case 'g': case '%': 404 case 'E': case 'G': 405 break; 406 case 's': 407 errx(1, "cannot convert numeric data to strings"); 408 break; 409 case 'd': case 'o': case 'x': case 'u': 410 case 'D': case 'O': case 'X': case 'U': 411 case 'c': case 'i': 412 dox = 1; 413 break; 414 default: 415 errx(1, "unknown or invalid format `%s'", format); 416 } 417 /* Need to check for trailing stuff to print */ 418 for (; *p; p++) /* look for '%' */ 419 if (*p == '%') { 420 if (*(p+1) != '%') 421 break; 422 p++; /* leave %% alone */ 423 } 424 if (*p) 425 errx(1, "unknown or invalid format `%s'", format); 426 } 427 } 428
Indexes created Fri Sep 26 08:10:20 GMT 2025