3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * @(#) Copyright (c) 1993 The Regents of the University of California. All rights reserved.
30 * @(#)jot.c 8.1 (Berkeley) 6/6/93
31 * $FreeBSD: src/usr.bin/jot/jot.c,v 1.13.2.3 2001/12/17 13:49:50 gallatin Exp $
35 * jot - print sequential or random data
37 * Author: John Kunze, Office of Comp. Affairs, UCB
55 #define is_default(s) (strcmp((s), "-") == 0)
66 static const char *sepstring = "\n";
67 static char format[BUFSIZ];
69 static void getformat(void);
70 static int getprec(const char *);
71 static int putdata(double, long);
72 static void usage(void) __dead2;
75 main(int argc, char **argv)
82 unsigned int mask = 0;
85 double begin = BEGIN_DEF;
86 double ender = ENDER_DEF;
90 while ((ch = getopt(argc, argv, "rb:w:cs:np:")) != -1)
105 if (strlcpy(format, optarg, sizeof(format)) >=
107 errx(1, "-%c word too long", ch);
115 errx(1, "bad precision value");
123 switch (argc) { /* examine args right to left, falling thru cases */
125 if (!is_default(argv[3])) {
126 if (!sscanf(argv[3], "%lf", &s))
127 errx(1, "bad s value: %s", argv[3]);
132 if (!is_default(argv[2])) {
133 if (!sscanf(argv[2], "%lf", &ender))
134 ender = argv[2][strlen(argv[2])-1];
137 n = getprec(argv[2]);
141 if (!is_default(argv[1])) {
142 if (!sscanf(argv[1], "%lf", &begin))
143 begin = argv[1][strlen(argv[1])-1];
146 prec = getprec(argv[1]);
147 if (n > prec) /* maximum precision */
152 if (!is_default(argv[0])) {
153 if (!sscanf(argv[0], "%ld", &reps))
154 errx(1, "bad reps value: %s", argv[0]);
161 errx(1, "too many arguments. What do you mean by %s?",
165 while (mask) /* 4 bit mask has 1's where last 4 args were given */
166 switch (mask) { /* fill in the 0's by default or computation */
202 reps = (ender - begin + s) / s;
204 errx(1, "impossible stepsize");
216 s = (randomize ? time(NULL) : STEP_DEF);
223 errx(1, "must specify begin if reps == 0");
224 begin = ender - reps * s + s;
228 s = (randomize ? -1.0 : STEP_DEF);
235 ender = begin + reps * s - s;
242 errx(1, "infinite sequences cannot be bounded");
246 s = (ender - begin) / (reps - 1);
249 case 017: /* if reps given and implied, */
250 if (!randomize && s != 0.0) {
251 long t = (ender - begin + s) / s;
253 errx(1, "impossible stepsize");
254 if (t < reps) /* take lesser */
265 *x = (ender - begin) * (ender > begin ? 1 : -1);
266 for (*i = 1; *i <= reps || infinity; (*i)++) {
267 *y = arc4random() / (double)0xffffffffU;
268 if (putdata(*y * *x + begin, reps - *i))
269 errx(1, "range error in conversion");
272 for (*i = 1, *x = begin; *i <= reps || infinity; (*i)++, *x += s)
273 if (putdata(*x, reps - *i))
274 errx(1, "range error in conversion");
281 putdata(double x, long notlast)
285 printf("%s", format);
286 else if (longdata && nosign) {
287 if (x <= (double)ULONG_MAX && x >= (double)0)
288 printf(format, (unsigned long)x);
291 } else if (longdata) {
292 if (x <= (double)LONG_MAX && x >= (double)LONG_MIN)
293 printf(format, (long)x);
296 } else if (chardata || (intdata && !nosign)) {
297 if (x <= (double)INT_MAX && x >= (double)INT_MIN)
298 printf(format, (int)x);
301 } else if (intdata) {
302 if (x <= (double)UINT_MAX && x >= (double)0)
303 printf(format, (unsigned int)x);
310 fputs(sepstring, stdout);
318 fprintf(stderr, "%s\n%s\n",
319 "usage: jot [-cnr] [-b word] [-w word] [-s string] [-p precision]",
320 " [reps [begin [end [s]]]]");
325 getprec(const char *str)
330 for (p = str; *p; p++)
335 for (q = ++p; *p; p++)
345 int dot, hash, space, sign, numbers = 0;
348 if (boring) /* no need to bother */
350 for (p = format; *p; p++) /* look for '%' */
351 if (*p == '%' && *(p+1) != '%') /* leave %% alone */
353 sz = sizeof(format) - strlen(format) - 1;
354 if (!*p && !chardata) {
355 if (snprintf(p, sz, "%%.%df", prec) >= (int)sz)
356 errx(1, "-w word too long");
357 } else if (!*p && chardata) {
358 if (strlcpy(p, "%c", sz) >= sz)
359 errx(1, "-w word too long");
361 } else if (!*(p+1)) {
363 errx(1, "-w word too long");
364 strcat(format, "%"); /* cannot end in single '%' */
367 * Allow conversion format specifiers of the form
368 * %[#][ ][{+,-}][0-9]*[.[0-9]*]? where ? must be one of
369 * [l]{d,i,o,u,x} or {f,e,g,E,G,d,o,x,D,O,U,X,c,u}
372 dot = hash = space = sign = numbers = 0;
373 while (!isalpha(*p)) {
377 } else if ((*p == '#' && !(numbers|dot|sign|space|
379 (*p == ' ' && !(numbers|dot|space++)) ||
380 ((*p == '+' || *p == '-') && !(numbers|dot|sign++))
381 || (*p == '.' && !(dot++)))
395 case 'o': case 'u': case 'x': case 'X':
396 intdata = nosign = 1;
409 intdata = nosign = 1;
412 if (!(intdata | longdata)) {
416 case 'h': case 'n': case 'p': case 'q': case 's': case 'L':
419 case 'f': case 'e': case 'g': case 'E': case 'G':
426 errx(1, "illegal or unsupported format '%s'", p2);
430 if (*p == '%' && *(p+1) && *(p+1) != '%')
431 errx(1, "too many conversions");
432 else if (*p == '%' && *(p+1) == '%')
434 else if (*p == '%' && !*(p+1)) {