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mirror of https://git.FreeBSD.org/src.git synced 2024-12-24 11:29:10 +00:00
freebsd/usr.bin/jot/jot.c
2000-07-10 06:02:13 +00:00

469 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[] =
"$FreeBSD$";
#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 <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 longdata;
int intdata;
int chardata;
int nosign;
int nofinalnl;
char *sepstring = "\n";
char format[BUFSIZ];
void getargs __P((int, char *[]));
void getformat __P((void));
int getprec __P((char *));
int 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;
getargs(argc, argv);
if (randomize) {
*x = (ender - begin) * (ender > begin ? 1 : -1);
for (*i = 1; *i <= reps || infinity; (*i)++) {
*y = (double) arc4random() / 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);
}
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;
}
int
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
printf(format, x);
if (notlast != 0)
fputs(sepstring, stdout);
return (0);
}
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 = 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
goto fmt_broken;
}
if (*p == 'l') {
longdata = 1;
if (*++p == 'l') {
if (p[1] != '\0')
p++;
goto fmt_broken;
}
}
switch (*p) {
case 'o': case 'u': case 'x': case 'X':
intdata = nosign = 1;
break;
case 'd': case 'i':
intdata = 1;
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 */
default:
fmt_broken:
*++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;
}
}
}