472 lines
10 KiB
C
472 lines
10 KiB
C
/*-
|
|
* 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[] =
|
|
"@(#) Copyright (c) 1993\n\
|
|
The Regents of the University of California. All rights reserved.\n";
|
|
#endif /* not lint */
|
|
|
|
#ifndef lint
|
|
#if 0
|
|
static char sccsid[] = "@(#)jot.c 8.1 (Berkeley) 6/6/93";
|
|
#endif
|
|
static const char rcsid[] =
|
|
"$Id: jot.c,v 1.10 1999/07/22 17:11:59 sheldonh Exp $";
|
|
#endif /* not lint */
|
|
|
|
/*
|
|
* jot - print sequential or random data
|
|
*
|
|
* Author: John Kunze, Office of Comp. Affairs, UCB
|
|
*/
|
|
|
|
#include <ctype.h>
|
|
#include <err.h>
|
|
#include <limits.h>
|
|
#include <signal.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <time.h>
|
|
#include <unistd.h>
|
|
|
|
#define REPS_DEF 100
|
|
#define BEGIN_DEF 1
|
|
#define ENDER_DEF 100
|
|
#define STEP_DEF 1
|
|
|
|
#define isdefault(s) (strcmp((s), "-") == 0)
|
|
|
|
double begin;
|
|
double ender;
|
|
double s;
|
|
long reps;
|
|
int randomize;
|
|
int infinity;
|
|
int boring;
|
|
int prec;
|
|
int intdata;
|
|
int chardata;
|
|
int nosign;
|
|
int nofinalnl;
|
|
int oflowlen;
|
|
char *oflowstr;
|
|
char *sepstring = "\n";
|
|
char format[BUFSIZ];
|
|
struct sigaction act, oact;
|
|
|
|
void arith_oflow __P((int));
|
|
void getargs __P((int, char *[]));
|
|
void getformat __P((void));
|
|
int getprec __P((char *));
|
|
void putdata __P((double, long));
|
|
static void usage __P((void));
|
|
|
|
int
|
|
main(argc, argv)
|
|
int argc;
|
|
char *argv[];
|
|
{
|
|
double xd, yd;
|
|
long id;
|
|
register double *x = &xd;
|
|
register double *y = &yd;
|
|
register long *i = &id;
|
|
|
|
act.sa_handler = arith_oflow;
|
|
act.sa_flags = 0;
|
|
sigfillset(&act.sa_mask);
|
|
oflowstr = "caught SIGFPE: arithmetic overflow\n";
|
|
oflowlen = strlen(oflowstr);
|
|
if (sigaction(SIGFPE, &act, &oact))
|
|
err(1, "loading SIGFPE handler");
|
|
getargs(argc, argv);
|
|
if (randomize) {
|
|
*x = (ender - begin) * (ender > begin ? 1 : -1);
|
|
for (*i = 1; *i <= reps || infinity; (*i)++) {
|
|
*y = (double) arc4random() / ULONG_MAX;
|
|
putdata(*y * *x + begin, reps - *i);
|
|
}
|
|
} else
|
|
for (*i = 1, *x = begin; *i <= reps || infinity; (*i)++, *x += s)
|
|
putdata(*x, reps - *i);
|
|
if (!nofinalnl)
|
|
putchar('\n');
|
|
exit(0);
|
|
}
|
|
|
|
void
|
|
getargs(ac, av)
|
|
int ac;
|
|
char *av[];
|
|
{
|
|
register unsigned int mask = 0;
|
|
register int n = 0;
|
|
|
|
while (--ac && **++av == '-' && !isdefault(*av))
|
|
switch ((*av)[1]) {
|
|
case 'r':
|
|
randomize = 1;
|
|
break;
|
|
case 'c':
|
|
chardata = 1;
|
|
break;
|
|
case 'n':
|
|
nofinalnl = 1;
|
|
break;
|
|
case 'b':
|
|
boring = 1;
|
|
case 'w':
|
|
if ((*av)[2])
|
|
strcpy(format, *av + 2);
|
|
else if (!--ac)
|
|
errx(1, "need context word after -w or -b");
|
|
else
|
|
strcpy(format, *++av);
|
|
break;
|
|
case 's':
|
|
if ((*av)[2])
|
|
sepstring = *av + 2;
|
|
else if (!--ac)
|
|
errx(1, "need string after -s");
|
|
else
|
|
sepstring = *++av;
|
|
break;
|
|
case 'p':
|
|
if ((*av)[2])
|
|
prec = atoi(*av + 2);
|
|
else if (!--ac)
|
|
errx(1, "need number after -p");
|
|
else
|
|
prec = atoi(*++av);
|
|
if (prec <= 0)
|
|
errx(1, "bad precision value");
|
|
break;
|
|
default:
|
|
usage();
|
|
}
|
|
|
|
switch (ac) { /* examine args right to left, falling thru cases */
|
|
case 4:
|
|
if (!isdefault(av[3])) {
|
|
if (!sscanf(av[3], "%lf", &s))
|
|
errx(1, "bad s value: %s", av[3]);
|
|
mask |= 01;
|
|
}
|
|
case 3:
|
|
if (!isdefault(av[2])) {
|
|
if (!sscanf(av[2], "%lf", &ender))
|
|
ender = av[2][strlen(av[2])-1];
|
|
mask |= 02;
|
|
if (!prec)
|
|
n = getprec(av[2]);
|
|
}
|
|
case 2:
|
|
if (!isdefault(av[1])) {
|
|
if (!sscanf(av[1], "%lf", &begin))
|
|
begin = av[1][strlen(av[1])-1];
|
|
mask |= 04;
|
|
if (!prec)
|
|
prec = getprec(av[1]);
|
|
if (n > prec) /* maximum precision */
|
|
prec = n;
|
|
}
|
|
case 1:
|
|
if (!isdefault(av[0])) {
|
|
if (!sscanf(av[0], "%ld", &reps))
|
|
errx(1, "bad reps value: %s", av[0]);
|
|
mask |= 010;
|
|
}
|
|
break;
|
|
case 0:
|
|
usage();
|
|
default:
|
|
errx(1, "too many arguments. What do you mean by %s?", av[4]);
|
|
}
|
|
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");
|
|
mask = 0;
|
|
break;
|
|
case 010:
|
|
begin = BEGIN_DEF;
|
|
mask = 014;
|
|
break;
|
|
case 011:
|
|
begin = BEGIN_DEF;
|
|
mask = 015;
|
|
break;
|
|
case 012:
|
|
s = (randomize ? -1.0 : STEP_DEF);
|
|
mask = 013;
|
|
break;
|
|
case 013:
|
|
if (randomize)
|
|
begin = BEGIN_DEF;
|
|
else if (reps == 0)
|
|
errx(1, "must specify begin if reps == 0");
|
|
else
|
|
begin = ender - reps * s + s;
|
|
mask = 0;
|
|
break;
|
|
case 014:
|
|
s = (randomize ? -1.0 : STEP_DEF);
|
|
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;
|
|
else if (reps == 0)
|
|
errx(1, "infinite sequences cannot be bounded");
|
|
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");
|
|
if (t < reps) /* take lesser */
|
|
reps = t;
|
|
}
|
|
mask = 0;
|
|
break;
|
|
default:
|
|
errx(1, "bad mask");
|
|
}
|
|
if (reps == 0)
|
|
infinity = 1;
|
|
}
|
|
|
|
void
|
|
putdata(x, notlast)
|
|
double x;
|
|
long notlast;
|
|
{
|
|
|
|
if (boring) /* repeated word */
|
|
printf(format);
|
|
else if (chardata) /* character representation */
|
|
printf(format, (int)x);
|
|
else if (intdata && nosign) /* scalar */
|
|
printf(format, (unsigned long)x);
|
|
else if (intdata)
|
|
printf(format, (long)x);
|
|
else /* real */
|
|
printf(format, x);
|
|
if (notlast != 0)
|
|
fputs(sepstring, stdout);
|
|
}
|
|
|
|
static void
|
|
usage()
|
|
{
|
|
fprintf(stderr, "%s\n%s\n",
|
|
"usage: jot [-cnr] [-b word] [-w word] [-s string] [-p precision]",
|
|
" [reps [begin [end [s]]]]");
|
|
exit(1);
|
|
}
|
|
|
|
int
|
|
getprec(s)
|
|
char *s;
|
|
{
|
|
register char *p;
|
|
register char *q;
|
|
|
|
for (p = s; *p; p++)
|
|
if (*p == '.')
|
|
break;
|
|
if (!*p)
|
|
return (0);
|
|
for (q = ++p; *p; p++)
|
|
if (!isdigit(*p))
|
|
break;
|
|
return (p - q);
|
|
}
|
|
|
|
void
|
|
getformat()
|
|
{
|
|
register char *p;
|
|
int dot, hash, space, sign, numbers, islong = 0;
|
|
char *s;
|
|
|
|
if (boring) /* no need to bother */
|
|
return;
|
|
for (p = format; *p; p++) /* look for '%' */
|
|
if (*p == '%' && *(p+1) != '%') /* leave %% alone */
|
|
break;
|
|
if (!*p && !chardata)
|
|
sprintf(p, "%%.%df", prec);
|
|
else if (!*p && chardata) {
|
|
strcpy(p, "%c");
|
|
intdata = 1;
|
|
} else if (!*(p+1))
|
|
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}
|
|
*/
|
|
s = 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 if (*p == '$' || *p == '*')
|
|
errx(1, "unsupported format character %c", *p);
|
|
else if (*p == '\0')
|
|
errx(1, "missing format character");
|
|
else
|
|
errx(1, "illegal format character %c", *p);
|
|
}
|
|
switch (*p) {
|
|
case 'l':
|
|
islong = 1;
|
|
p++;
|
|
/* FALLTHROUGH */
|
|
case 'o': case 'u': case 'x': case 'X':
|
|
intdata = nosign = 1;
|
|
break;
|
|
case 'd': case 'i':
|
|
intdata = 1;
|
|
break;
|
|
case 'D':
|
|
if (!islong) {
|
|
intdata = 1;
|
|
break;
|
|
}
|
|
case 'O': case 'U':
|
|
if (!islong) {
|
|
intdata = nosign = 1;
|
|
break;
|
|
}
|
|
case 'c':
|
|
if (!(intdata | islong)) {
|
|
chardata = 1;
|
|
break;
|
|
}
|
|
case 's':
|
|
errx(1, "cannot convert numeric data to strings");
|
|
break;
|
|
case 'h': case 'n': case 'p': case 'q': case 'L':
|
|
case '$': case '*':
|
|
errx(1, "unsupported format character %c", *p);
|
|
/* NOTREACHED */
|
|
case 'f': case 'e': case 'g': case 'E': case 'G':
|
|
if (!islong)
|
|
break;
|
|
/* FALLTHROUGH */
|
|
default:
|
|
*++p = '\0';
|
|
errx(1, "illegal or unsupported format '%s'", s);
|
|
/* NOTREACHED */
|
|
}
|
|
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;
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
arith_oflow(int sig)
|
|
{
|
|
|
|
write(STDERR_FILENO, oflowstr, oflowlen);
|
|
_exit(sig);
|
|
}
|