freebsd-dev/usr.bin/jot/jot.c

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/*-
* Copyright (c) 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef lint
static const char copyright[] =
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"@(#) Copyright (c) 1993\n\
The Regents of the University of California. All rights reserved.\n";
#endif /* not lint */
#ifndef lint
#if 0
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static char sccsid[] = "@(#)jot.c 8.1 (Berkeley) 6/6/93";
#endif
static const char rcsid[] =
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"$FreeBSD$";
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#endif /* not lint */
/*
* jot - print sequential or random data
*
* Author: John Kunze, Office of Comp. Affairs, UCB
*/
#include <ctype.h>
#include <err.h>
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#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
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#define REPS_DEF 100
#define BEGIN_DEF 1
#define ENDER_DEF 100
#define STEP_DEF 1
#define is_default(s) (strcmp((s), "-") == 0)
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double begin;
double ender;
double s;
long reps;
int randomize;
int infinity;
int boring;
int prec;
int longdata;
int intdata;
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int chardata;
int nosign;
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int nofinalnl;
const char *sepstring = "\n";
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char format[BUFSIZ];
int main __P((int, char *[]));
void getformat __P((void));
int getprec __P((char *));
int putdata __P((double, long));
static void usage __P((void));
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int
main(argc, argv)
int argc;
char *argv[];
{
double xd, yd;
long id;
double *x = &xd;
double *y = &yd;
long *i = &id;
unsigned int mask = 0;
int n = 0;
int ch;
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while ((ch = getopt(argc, argv, "rb:w:cs:np:")) != -1)
switch ((char)ch) {
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case 'r':
randomize = 1;
break;
case 'c':
chardata = 1;
break;
case 'n':
nofinalnl = 1;
break;
case 'b':
boring = 1;
/* FALLTHROUGH */
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case 'w':
if (strlcpy(format, optarg, sizeof(format)) >=
sizeof(format))
errx(1, "-%c word too long", ch);
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break;
case 's':
sepstring = optarg;
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break;
case 'p':
prec = atoi(optarg);
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if (prec <= 0)
errx(1, "bad precision value");
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break;
default:
usage();
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}
argc -= optind;
argv += optind;
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switch (argc) { /* examine args right to left, falling thru cases */
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case 4:
if (!is_default(argv[3])) {
if (!sscanf(argv[3], "%lf", &s))
errx(1, "bad s value: %s", argv[3]);
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mask |= 01;
}
case 3:
if (!is_default(argv[2])) {
if (!sscanf(argv[2], "%lf", &ender))
ender = argv[2][strlen(argv[2])-1];
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mask |= 02;
if (!prec)
n = getprec(argv[2]);
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}
case 2:
if (!is_default(argv[1])) {
if (!sscanf(argv[1], "%lf", &begin))
begin = argv[1][strlen(argv[1])-1];
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mask |= 04;
if (!prec)
prec = getprec(argv[1]);
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if (n > prec) /* maximum precision */
prec = n;
}
case 1:
if (!is_default(argv[0])) {
if (!sscanf(argv[0], "%ld", &reps))
errx(1, "bad reps value: %s", argv[0]);
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mask |= 010;
}
break;
case 0:
usage();
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default:
errx(1, "too many arguments. What do you mean by %s?",
argv[4]);
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}
getformat();
while (mask) /* 4 bit mask has 1's where last 4 args were given */
switch (mask) { /* fill in the 0's by default or computation */
case 001:
reps = REPS_DEF;
mask = 011;
break;
case 002:
reps = REPS_DEF;
mask = 012;
break;
case 003:
reps = REPS_DEF;
mask = 013;
break;
case 004:
reps = REPS_DEF;
mask = 014;
break;
case 005:
reps = REPS_DEF;
mask = 015;
break;
case 006:
reps = REPS_DEF;
mask = 016;
break;
case 007:
if (randomize) {
reps = REPS_DEF;
mask = 0;
break;
}
if (s == 0.0) {
reps = 0;
mask = 0;
break;
}
reps = (ender - begin + s) / s;
if (reps <= 0)
errx(1, "impossible stepsize");
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mask = 0;
break;
case 010:
begin = BEGIN_DEF;
mask = 014;
break;
case 011:
begin = BEGIN_DEF;
mask = 015;
break;
case 012:
s = (randomize ? time(NULL) : STEP_DEF);
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mask = 013;
break;
case 013:
if (randomize)
begin = BEGIN_DEF;
else if (reps == 0)
errx(1, "must specify begin if reps == 0");
begin = ender - reps * s + s;
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mask = 0;
break;
case 014:
s = (randomize ? -1.0 : STEP_DEF);
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mask = 015;
break;
case 015:
if (randomize)
ender = ENDER_DEF;
else
ender = begin + reps * s - s;
mask = 0;
break;
case 016:
if (randomize)
s = -1.0;
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else if (reps == 0)
errx(1, "infinite sequences cannot be bounded");
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else if (reps == 1)
s = 0.0;
else
s = (ender - begin) / (reps - 1);
mask = 0;
break;
case 017: /* if reps given and implied, */
if (!randomize && s != 0.0) {
long t = (ender - begin + s) / s;
if (t <= 0)
errx(1, "impossible stepsize");
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if (t < reps) /* take lesser */
reps = t;
}
mask = 0;
break;
default:
errx(1, "bad mask");
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}
if (reps == 0)
infinity = 1;
if (randomize) {
*x = (ender - begin) * (ender > begin ? 1 : -1);
for (*i = 1; *i <= reps || infinity; (*i)++) {
*y = arc4random() / (double)ULONG_MAX;
if (putdata(*y * *x + begin, reps - *i))
errx(1, "range error in conversion");
}
} else
for (*i = 1, *x = begin; *i <= reps || infinity; (*i)++, *x += s)
if (putdata(*x, reps - *i))
errx(1, "range error in conversion");
if (!nofinalnl)
putchar('\n');
exit(0);
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}
int
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putdata(x, notlast)
double x;
long notlast;
{
if (boring)
printf("%s", format);
else if (longdata && nosign) {
if (x <= (double)ULONG_MAX && x >= (double)0)
printf(format, (unsigned long)x);
else
return (1);
} else if (longdata) {
if (x <= (double)LONG_MAX && x >= (double)LONG_MIN)
printf(format, (long)x);
else
return (1);
} else if (chardata || (intdata && !nosign)) {
if (x <= (double)INT_MAX && x >= (double)INT_MIN)
printf(format, (int)x);
else
return (1);
} else if (intdata) {
if (x <= (double)UINT_MAX && x >= (double)0)
printf(format, (unsigned int)x);
else
return (1);
} else
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printf(format, x);
if (notlast != 0)
fputs(sepstring, stdout);
return (0);
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}
static void
usage()
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{
fprintf(stderr, "%s\n%s\n",
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"usage: jot [-cnr] [-b word] [-w word] [-s string] [-p precision]",
" [reps [begin [end [s]]]]");
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exit(1);
}
int
getprec(str)
char *str;
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{
char *p;
char *q;
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for (p = str; *p; p++)
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if (*p == '.')
break;
if (!*p)
return (0);
for (q = ++p; *p; p++)
if (!isdigit(*p))
break;
return (p - q);
}
void
getformat()
{
char *p, *p2;
int dot, hash, space, sign, numbers = 0;
size_t sz;
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if (boring) /* no need to bother */
return;
for (p = format; *p; p++) /* look for '%' */
if (*p == '%' && *(p+1) != '%') /* leave %% alone */
break;
sz = sizeof(format) - strlen(format) - 1;
if (!*p && !chardata) {
if (snprintf(p, sz, "%%.%df", prec) >= (int)sz)
errx(1, "-w word too long");
} else if (!*p && chardata) {
if (strlcpy(p, "%c", sz) >= sz)
errx(1, "-w word too long");
intdata = 1;
} else if (!*(p+1)) {
if (sz <= 0)
errx(1, "-w word too long");
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strcat(format, "%"); /* cannot end in single '%' */
} else {
/*
* Allow conversion format specifiers of the form
* %[#][ ][{+,-}][0-9]*[.[0-9]*]? where ? must be one of
* [l]{d,i,o,u,x} or {f,e,g,E,G,d,o,x,D,O,U,X,c,u}
*/
p2 = p++;
dot = hash = space = sign = numbers = 0;
while (!isalpha(*p)) {
if (isdigit(*p)) {
numbers++;
p++;
} else if ((*p == '#' && !(numbers|dot|sign|space|
hash++)) ||
(*p == ' ' && !(numbers|dot|space++)) ||
((*p == '+' || *p == '-') && !(numbers|dot|sign++))
|| (*p == '.' && !(dot++)))
p++;
else
goto fmt_broken;
}
if (*p == 'l') {
longdata = 1;
if (*++p == 'l') {
if (p[1] != '\0')
p++;
goto fmt_broken;
}
}
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switch (*p) {
case 'o': case 'u': case 'x': case 'X':
intdata = nosign = 1;
break;
case 'd': case 'i':
intdata = 1;
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break;
case 'D':
if (!longdata) {
intdata = 1;
break;
}
case 'O': case 'U':
if (!longdata) {
intdata = nosign = 1;
break;
}
case 'c':
if (!(intdata | longdata)) {
chardata = 1;
break;
}
case 'h': case 'n': case 'p': case 'q': case 's': case 'L':
case '$': case '*':
goto fmt_broken;
case 'f': case 'e': case 'g': case 'E': case 'G':
if (!longdata)
break;
/* FALLTHROUGH */
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default:
fmt_broken:
*++p = '\0';
errx(1, "illegal or unsupported format '%s'", p2);
/* NOTREACHED */
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}
while (*++p)
if (*p == '%' && *(p+1) && *(p+1) != '%')
errx(1, "too many conversions");
else if (*p == '%' && *(p+1) == '%')
p++;
else if (*p == '%' && !*(p+1)) {
strcat(format, "%");
break;
}
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}
}