4.4BSD/usr/src/usr.bin/jot/jot.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 char copyright[] =
"@(#) Copyright (c) 1993\n\
The Regents of the University of California. All rights reserved.\n";
#endif /* not lint */
#ifndef lint
static char sccsid[] = "@(#)jot.c 8.1 (Berkeley) 6/6/93";
#endif /* not lint */
/*
* jot - print sequential or random data
*
* Author: John Kunze, Office of Comp. Affairs, UCB
*/
#include <ctype.h>
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.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 dox;
int chardata;
int nofinalnl;
char *sepstring = "\n";
char format[BUFSIZ];
void error __P((char *, char *));
void getargs __P((int, char *[]));
void getformat __P((void));
int getprec __P((char *));
void putdata __P((double, long));
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;
getargs(argc, argv);
if (randomize) {
*x = (ender - begin) * (ender > begin ? 1 : -1);
srandom((int) s);
for (*i = 1; *i <= reps || infinity; (*i)++) {
*y = (double) random() / INT_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)
error("Need context word after -w or -b", "");
else
strcpy(format, *++av);
break;
case 's':
if ((*av)[2])
strcpy(sepstring, *av + 2);
else if (!--ac)
error("Need string after -s", "");
else
strcpy(sepstring, *++av);
break;
case 'p':
if ((*av)[2])
prec = atoi(*av + 2);
else if (!--ac)
error("Need number after -p", "");
else
prec = atoi(*++av);
if (prec <= 0)
error("Bad precision value", "");
break;
default:
error("Unknown option %s", *av);
}
switch (ac) { /* examine args right to left, falling thru cases */
case 4:
if (!isdefault(av[3])) {
if (!sscanf(av[3], "%lf", &s))
error("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))
error("Bad reps value: %s", av[0]);
mask |= 010;
}
break;
case 0:
error("jot - print sequential or random data", "");
default:
error("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)
error("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 ? time(0) : STEP_DEF);
mask = 013;
break;
case 013:
if (randomize)
begin = BEGIN_DEF;
else if (reps == 0)
error("Must specify begin if reps == 0", "");
begin = ender - reps * s + s;
mask = 0;
break;
case 014:
s = (randomize ? time(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 = time(0);
else if (reps == 0)
error("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)
error("Impossible stepsize", "");
if (t < reps) /* take lesser */
reps = t;
}
mask = 0;
break;
default:
error("Bad mask", "");
}
if (reps == 0)
infinity = 1;
}
void
putdata(x, notlast)
double x;
long notlast;
{
long d = x;
register long *dp = &d;
if (boring) /* repeated word */
printf(format);
else if (dox) /* scalar */
printf(format, *dp);
else /* real */
printf(format, x);
if (notlast != 0)
fputs(sepstring, stdout);
}
void
error(msg, s)
char *msg, *s;
{
fprintf(stderr, "jot: ");
fprintf(stderr, msg, s);
fprintf(stderr,
"\nusage: jot [ options ] [ reps [ begin [ end [ s ] ] ] ]\n");
if (strncmp("jot - ", msg, 6) == 0)
fprintf(stderr, "Options:\n\t%s\t%s\t%s\t%s\t%s\t%s\t%s",
"-r random data\n",
"-c character data\n",
"-n no final newline\n",
"-b word repeated word\n",
"-w word context word\n",
"-s string data separator\n",
"-p precision number of characters\n");
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;
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");
dox = 1;
}
else if (!*(p+1))
strcat(format, "%"); /* cannot end in single '%' */
else {
while (!isalpha(*p))
p++;
switch (*p) {
case 'f': case 'e': case 'g': case '%':
break;
case 's':
error("Cannot convert numeric data to strings", "");
break;
/* case 'd': case 'o': case 'x': case 'D': case 'O': case 'X':
case 'c': case 'u': */
default:
dox = 1;
break;
}
}
}