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
35static 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
42static char sccsid[] = "@(#)jot.c 8.1 (Berkeley) 6/6/93";
43#endif
44static const char rcsid[] =
45 "$FreeBSD: head/usr.bin/jot/jot.c 62871 2000-07-10 06:02:13Z kris $";
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
70double begin;
71double ender;
72double s;
73long reps;
74int randomize;
75int infinity;
76int boring;
77int prec;
78int longdata;
79int intdata;
80int chardata;
81int nosign;
82int nofinalnl;
83char *sepstring = "\n";
84char format[BUFSIZ];
85
86void getargs __P((int, char *[]));
87void getformat __P((void));
88int getprec __P((char *));
89int putdata __P((double, long));
90static void usage __P((void));
91
92int
93main(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
120void
121getargs(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
311int
312putdata(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
348static void
349usage()
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
357int
358getprec(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
375void
376getformat()
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:
453fmt_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}